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-rw-r--r--src/gallium/drivers/ilo/Makefile.sources4
-rw-r--r--src/gallium/drivers/ilo/ilo_shader.h34
-rw-r--r--src/gallium/drivers/ilo/shader/ilo_shader_cs.c38
-rw-r--r--src/gallium/drivers/ilo/shader/ilo_shader_fs.c1694
-rw-r--r--src/gallium/drivers/ilo/shader/ilo_shader_gs.c1437
-rw-r--r--src/gallium/drivers/ilo/shader/ilo_shader_vs.c1273
6 files changed, 4460 insertions, 20 deletions
diff --git a/src/gallium/drivers/ilo/Makefile.sources b/src/gallium/drivers/ilo/Makefile.sources
index c19801e7281..661f3f12f3e 100644
--- a/src/gallium/drivers/ilo/Makefile.sources
+++ b/src/gallium/drivers/ilo/Makefile.sources
@@ -17,6 +17,10 @@ C_SOURCES := \
ilo_shader.c \
ilo_state.c \
ilo_video.c \
+ shader/ilo_shader_cs.c \
+ shader/ilo_shader_fs.c \
+ shader/ilo_shader_gs.c \
+ shader/ilo_shader_vs.c \
shader/toy_compiler.c \
shader/toy_compiler_asm.c \
shader/toy_compiler_disasm.c \
diff --git a/src/gallium/drivers/ilo/ilo_shader.h b/src/gallium/drivers/ilo/ilo_shader.h
index ffe5611131c..2c9e556adf8 100644
--- a/src/gallium/drivers/ilo/ilo_shader.h
+++ b/src/gallium/drivers/ilo/ilo_shader.h
@@ -211,33 +211,27 @@ ilo_shader_cache_mark_busy(struct ilo_shader_cache *shc)
shc->busy = true;
}
-static inline struct ilo_shader *
+struct ilo_shader *
ilo_shader_compile_vs(const struct ilo_shader_state *state,
- const struct ilo_shader_variant *variant)
-{
- return NULL;
-}
+ const struct ilo_shader_variant *variant);
-static inline struct ilo_shader *
+struct ilo_shader *
ilo_shader_compile_gs(const struct ilo_shader_state *state,
- const struct ilo_shader_variant *variant)
-{
- return NULL;
-}
+ const struct ilo_shader_variant *variant);
+
+bool
+ilo_shader_compile_gs_passthrough(const struct ilo_shader_state *vs_state,
+ const struct ilo_shader_variant *vs_variant,
+ const int *so_mapping,
+ struct ilo_shader *vs);
-static inline struct ilo_shader *
+struct ilo_shader *
ilo_shader_compile_fs(const struct ilo_shader_state *state,
- const struct ilo_shader_variant *variant)
-{
- return NULL;
-}
+ const struct ilo_shader_variant *variant);
-static inline struct ilo_shader *
+struct ilo_shader *
ilo_shader_compile_cs(const struct ilo_shader_state *state,
- const struct ilo_shader_variant *variant)
-{
- return NULL;
-}
+ const struct ilo_shader_variant *variant);
static inline void
ilo_shader_destroy(struct ilo_shader *sh)
diff --git a/src/gallium/drivers/ilo/shader/ilo_shader_cs.c b/src/gallium/drivers/ilo/shader/ilo_shader_cs.c
new file mode 100644
index 00000000000..85182f2a1b7
--- /dev/null
+++ b/src/gallium/drivers/ilo/shader/ilo_shader_cs.c
@@ -0,0 +1,38 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2012-2013 LunarG, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Chia-I Wu <olv@lunarg.com>
+ */
+
+#include "ilo_shader.h"
+
+/**
+ * Compile the compute shader.
+ */
+struct ilo_shader *
+ilo_shader_compile_cs(const struct ilo_shader_state *state,
+ const struct ilo_shader_variant *variant)
+{
+ return NULL;
+}
diff --git a/src/gallium/drivers/ilo/shader/ilo_shader_fs.c b/src/gallium/drivers/ilo/shader/ilo_shader_fs.c
new file mode 100644
index 00000000000..d5f365cb4d7
--- /dev/null
+++ b/src/gallium/drivers/ilo/shader/ilo_shader_fs.c
@@ -0,0 +1,1694 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2012-2013 LunarG, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Chia-I Wu <olv@lunarg.com>
+ */
+
+#include "tgsi/tgsi_dump.h"
+#include "toy_compiler.h"
+#include "toy_tgsi.h"
+#include "toy_legalize.h"
+#include "toy_optimize.h"
+#include "toy_helpers.h"
+#include "ilo_context.h"
+#include "ilo_shader.h"
+
+struct fs_compile_context {
+ struct ilo_shader *shader;
+ const struct ilo_shader_variant *variant;
+
+ struct toy_compiler tc;
+ struct toy_tgsi tgsi;
+
+ enum brw_message_target const_cache;
+ int dispatch_mode;
+
+ struct {
+ int barycentric_interps[BRW_WM_BARYCENTRIC_INTERP_MODE_COUNT];
+ int source_depth;
+ int source_w;
+ int pos_offset;
+ } payloads[2];
+
+ int first_const_grf;
+ int first_attr_grf;
+ int first_free_grf;
+ int last_free_grf;
+
+ int num_grf_per_vrf;
+
+ int first_free_mrf;
+ int last_free_mrf;
+};
+
+static void
+fetch_position(struct fs_compile_context *fcc, struct toy_dst dst)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ const struct toy_src src_z =
+ tsrc(TOY_FILE_GRF, fcc->payloads[0].source_depth, 0);
+ const struct toy_src src_w =
+ tsrc(TOY_FILE_GRF, fcc->payloads[0].source_w, 0);
+ const int fb_height =
+ (fcc->variant->u.fs.fb_height) ? fcc->variant->u.fs.fb_height : 1;
+ const bool origin_upper_left =
+ (fcc->tgsi.props.fs_coord_origin == TGSI_FS_COORD_ORIGIN_UPPER_LEFT);
+ const bool pixel_center_integer =
+ (fcc->tgsi.props.fs_coord_pixel_center ==
+ TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
+ struct toy_src subspan_x, subspan_y;
+ struct toy_dst tmp, tmp_uw;
+ struct toy_dst real_dst[4];
+
+ tdst_transpose(dst, real_dst);
+
+ subspan_x = tsrc_uw(tsrc(TOY_FILE_GRF, 1, 2 * 4));
+ subspan_x = tsrc_rect(subspan_x, TOY_RECT_240);
+
+ subspan_y = tsrc_offset(subspan_x, 0, 1);
+
+ tmp_uw = tdst_uw(tc_alloc_tmp(tc));
+ tmp = tc_alloc_tmp(tc);
+
+ /* X */
+ tc_ADD(tc, tmp_uw, subspan_x, tsrc_imm_v(0x10101010));
+ tc_MOV(tc, tmp, tsrc_from(tmp_uw));
+ if (pixel_center_integer)
+ tc_MOV(tc, real_dst[0], tsrc_from(tmp));
+ else
+ tc_ADD(tc, real_dst[0], tsrc_from(tmp), tsrc_imm_f(0.5f));
+
+ /* Y */
+ tc_ADD(tc, tmp_uw, subspan_y, tsrc_imm_v(0x11001100));
+ tc_MOV(tc, tmp, tsrc_from(tmp_uw));
+ if (origin_upper_left && pixel_center_integer) {
+ tc_MOV(tc, real_dst[1], tsrc_from(tmp));
+ }
+ else {
+ struct toy_src y = tsrc_from(tmp);
+ float offset = 0.0f;
+
+ if (!pixel_center_integer)
+ offset += 0.5f;
+
+ if (!origin_upper_left) {
+ offset += (float) (fb_height - 1);
+ y = tsrc_negate(y);
+ }
+
+ tc_ADD(tc, real_dst[1], y, tsrc_imm_f(offset));
+ }
+
+ /* Z and W */
+ tc_MOV(tc, real_dst[2], src_z);
+ tc_INV(tc, real_dst[3], src_w);
+}
+
+static void
+fetch_face(struct fs_compile_context *fcc, struct toy_dst dst)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ const struct toy_src r0 = tsrc_d(tsrc(TOY_FILE_GRF, 0, 0));
+ struct toy_dst tmp_f, tmp;
+ struct toy_dst real_dst[4];
+
+ tdst_transpose(dst, real_dst);
+
+ tmp_f = tc_alloc_tmp(tc);
+ tmp = tdst_d(tmp_f);
+ tc_SHR(tc, tmp, tsrc_rect(r0, TOY_RECT_010), tsrc_imm_d(15));
+ tc_AND(tc, tmp, tsrc_from(tmp), tsrc_imm_d(1));
+ tc_MOV(tc, tmp_f, tsrc_from(tmp));
+
+ /* convert to 1.0 and -1.0 */
+ tc_MUL(tc, tmp_f, tsrc_from(tmp_f), tsrc_imm_f(-2.0f));
+ tc_ADD(tc, real_dst[0], tsrc_from(tmp_f), tsrc_imm_f(1.0f));
+
+ tc_MOV(tc, real_dst[1], tsrc_imm_f(0.0f));
+ tc_MOV(tc, real_dst[2], tsrc_imm_f(0.0f));
+ tc_MOV(tc, real_dst[3], tsrc_imm_f(1.0f));
+}
+
+static void
+fetch_attr(struct fs_compile_context *fcc, struct toy_dst dst, int slot)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ struct toy_dst real_dst[4];
+ bool is_const = false;
+ int grf, mode, ch;
+
+ tdst_transpose(dst, real_dst);
+
+ grf = fcc->first_attr_grf + slot * 2;
+
+ switch (fcc->tgsi.inputs[slot].interp) {
+ case TGSI_INTERPOLATE_CONSTANT:
+ is_const = true;
+ break;
+ case TGSI_INTERPOLATE_LINEAR:
+ if (fcc->tgsi.inputs[slot].centroid)
+ mode = BRW_WM_NONPERSPECTIVE_CENTROID_BARYCENTRIC;
+ else
+ mode = BRW_WM_NONPERSPECTIVE_PIXEL_BARYCENTRIC;
+ break;
+ case TGSI_INTERPOLATE_COLOR:
+ if (fcc->variant->u.fs.flatshade) {
+ is_const = true;
+ break;
+ }
+ /* fall through */
+ case TGSI_INTERPOLATE_PERSPECTIVE:
+ if (fcc->tgsi.inputs[slot].centroid)
+ mode = BRW_WM_PERSPECTIVE_CENTROID_BARYCENTRIC;
+ else
+ mode = BRW_WM_PERSPECTIVE_PIXEL_BARYCENTRIC;
+ break;
+ default:
+ assert(!"unexpected FS interpolation");
+ mode = BRW_WM_PERSPECTIVE_PIXEL_BARYCENTRIC;
+ break;
+ }
+
+ if (is_const) {
+ struct toy_src a0[4];
+
+ a0[0] = tsrc(TOY_FILE_GRF, grf + 0, 3 * 4);
+ a0[1] = tsrc(TOY_FILE_GRF, grf + 0, 7 * 4);
+ a0[2] = tsrc(TOY_FILE_GRF, grf + 1, 3 * 4);
+ a0[3] = tsrc(TOY_FILE_GRF, grf + 1, 7 * 4);
+
+ for (ch = 0; ch < 4; ch++)
+ tc_MOV(tc, real_dst[ch], tsrc_rect(a0[ch], TOY_RECT_010));
+ }
+ else {
+ struct toy_src attr[4], uv;
+
+ attr[0] = tsrc(TOY_FILE_GRF, grf + 0, 0);
+ attr[1] = tsrc(TOY_FILE_GRF, grf + 0, 4 * 4);
+ attr[2] = tsrc(TOY_FILE_GRF, grf + 1, 0);
+ attr[3] = tsrc(TOY_FILE_GRF, grf + 1, 4 * 4);
+
+ uv = tsrc(TOY_FILE_GRF, fcc->payloads[0].barycentric_interps[mode], 0);
+
+ for (ch = 0; ch < 4; ch++) {
+ tc_add2(tc, BRW_OPCODE_PLN, real_dst[ch],
+ tsrc_rect(attr[ch], TOY_RECT_010), uv);
+ }
+ }
+
+ if (fcc->tgsi.inputs[slot].semantic_name == TGSI_SEMANTIC_FOG) {
+ tc_MOV(tc, real_dst[1], tsrc_imm_f(0.0f));
+ tc_MOV(tc, real_dst[2], tsrc_imm_f(0.0f));
+ tc_MOV(tc, real_dst[3], tsrc_imm_f(1.0f));
+ }
+}
+
+static void
+fs_lower_opcode_tgsi_in(struct fs_compile_context *fcc,
+ struct toy_dst dst, int dim, int idx)
+{
+ int slot;
+
+ assert(!dim);
+
+ slot = toy_tgsi_find_input(&fcc->tgsi, idx);
+ if (slot < 0)
+ return;
+
+ switch (fcc->tgsi.inputs[slot].semantic_name) {
+ case TGSI_SEMANTIC_POSITION:
+ fetch_position(fcc, dst);
+ break;
+ case TGSI_SEMANTIC_FACE:
+ fetch_face(fcc, dst);
+ break;
+ default:
+ fetch_attr(fcc, dst, slot);
+ break;
+ }
+}
+
+static void
+fs_lower_opcode_tgsi_const_gen6(struct fs_compile_context *fcc,
+ struct toy_dst dst, int dim, struct toy_src idx)
+{
+ const struct toy_dst header =
+ tdst_ud(tdst(TOY_FILE_MRF, fcc->first_free_mrf, 0));
+ const struct toy_dst global_offset =
+ tdst_ud(tdst(TOY_FILE_MRF, fcc->first_free_mrf, 2 * 4));
+ const struct toy_src r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));
+ struct toy_compiler *tc = &fcc->tc;
+ unsigned msg_type, msg_ctrl, msg_len;
+ struct toy_inst *inst;
+ struct toy_src desc;
+ struct toy_dst tmp, real_dst[4];
+ int i;
+
+ /* set message header */
+ inst = tc_MOV(tc, header, r0);
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+
+ /* set global offset */
+ inst = tc_MOV(tc, global_offset, idx);
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+ inst->exec_size = BRW_EXECUTE_1;
+ inst->src[0].rect = TOY_RECT_010;
+
+ msg_type = BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ;
+ msg_ctrl = BRW_DATAPORT_OWORD_BLOCK_1_OWORDLOW << 8;
+ msg_len = 1;
+
+ desc = tsrc_imm_mdesc_data_port(tc, false, msg_len, 1, true, false,
+ msg_type, msg_ctrl, ILO_WM_CONST_SURFACE(dim));
+
+ tmp = tc_alloc_tmp(tc);
+
+ tc_SEND(tc, tmp, tsrc_from(header), desc, fcc->const_cache);
+
+ tdst_transpose(dst, real_dst);
+ for (i = 0; i < 4; i++) {
+ const struct toy_src src =
+ tsrc_offset(tsrc_rect(tsrc_from(tmp), TOY_RECT_010), 0, i);
+
+ /* cast to type D to make sure these are raw moves */
+ tc_MOV(tc, tdst_d(real_dst[i]), tsrc_d(src));
+ }
+}
+
+static void
+fs_lower_opcode_tgsi_const_gen7(struct fs_compile_context *fcc,
+ struct toy_dst dst, int dim, struct toy_src idx)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ const struct toy_dst offset =
+ tdst_ud(tdst(TOY_FILE_MRF, fcc->first_free_mrf, 0));
+ struct toy_src desc;
+ struct toy_inst *inst;
+ struct toy_dst tmp, real_dst[4];
+ int i;
+
+ /*
+ * In 4c1fdae0a01b3f92ec03b61aac1d3df500d51fc6, pull constant load was
+ * changed from OWord Block Read to ld to increase performance in the
+ * classic driver. Since we use the constant cache instead of the data
+ * cache, I wonder if we still want to follow the classic driver.
+ */
+
+ /* set offset */
+ inst = tc_MOV(tc, offset, tsrc_rect(idx, TOY_RECT_010));
+ inst->exec_size = BRW_EXECUTE_8;
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+
+ desc = tsrc_imm_mdesc_sampler(tc, 1, 1, false,
+ BRW_SAMPLER_SIMD_MODE_SIMD4X2,
+ GEN5_SAMPLER_MESSAGE_SAMPLE_LD,
+ 0,
+ ILO_WM_CONST_SURFACE(dim));
+
+ tmp = tc_alloc_tmp(tc);
+ inst = tc_SEND(tc, tmp, tsrc_from(offset), desc, BRW_SFID_SAMPLER);
+ inst->exec_size = BRW_EXECUTE_8;
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+
+ tdst_transpose(dst, real_dst);
+ for (i = 0; i < 4; i++) {
+ const struct toy_src src =
+ tsrc_offset(tsrc_rect(tsrc_from(tmp), TOY_RECT_010), 0, i);
+
+ /* cast to type D to make sure these are raw moves */
+ tc_MOV(tc, tdst_d(real_dst[i]), tsrc_d(src));
+ }
+}
+
+static void
+fs_lower_opcode_tgsi_imm(struct fs_compile_context *fcc,
+ struct toy_dst dst, int idx)
+{
+ const uint32_t *imm;
+ struct toy_dst real_dst[4];
+ int ch;
+
+ imm = toy_tgsi_get_imm(&fcc->tgsi, idx, NULL);
+
+ tdst_transpose(dst, real_dst);
+ /* raw moves */
+ for (ch = 0; ch < 4; ch++)
+ tc_MOV(&fcc->tc, tdst_ud(real_dst[ch]), tsrc_imm_ud(imm[ch]));
+}
+
+static void
+fs_lower_opcode_tgsi_sv(struct fs_compile_context *fcc,
+ struct toy_dst dst, int dim, int idx)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ const struct toy_tgsi *tgsi = &fcc->tgsi;
+ int slot;
+
+ assert(!dim);
+
+ slot = toy_tgsi_find_system_value(tgsi, idx);
+ if (slot < 0)
+ return;
+
+ switch (tgsi->system_values[slot].semantic_name) {
+ case TGSI_SEMANTIC_PRIMID:
+ case TGSI_SEMANTIC_INSTANCEID:
+ case TGSI_SEMANTIC_VERTEXID:
+ default:
+ tc_fail(tc, "unhandled system value");
+ tc_MOV(tc, dst, tsrc_imm_d(0));
+ break;
+ }
+}
+
+static void
+fs_lower_opcode_tgsi_direct(struct fs_compile_context *fcc,
+ struct toy_inst *inst)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ int dim, idx;
+
+ assert(inst->src[0].file == TOY_FILE_IMM);
+ dim = inst->src[0].val32;
+
+ assert(inst->src[1].file == TOY_FILE_IMM);
+ idx = inst->src[1].val32;
+
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_IN:
+ fs_lower_opcode_tgsi_in(fcc, inst->dst, dim, idx);
+ break;
+ case TOY_OPCODE_TGSI_CONST:
+ if (tc->gen >= ILO_GEN(7))
+ fs_lower_opcode_tgsi_const_gen7(fcc, inst->dst, dim, inst->src[1]);
+ else
+ fs_lower_opcode_tgsi_const_gen6(fcc, inst->dst, dim, inst->src[1]);
+ break;
+ case TOY_OPCODE_TGSI_SV:
+ fs_lower_opcode_tgsi_sv(fcc, inst->dst, dim, idx);
+ break;
+ case TOY_OPCODE_TGSI_IMM:
+ assert(!dim);
+ fs_lower_opcode_tgsi_imm(fcc, inst->dst, idx);
+ break;
+ default:
+ tc_fail(tc, "unhandled TGSI fetch");
+ break;
+ }
+
+ tc_discard_inst(tc, inst);
+}
+
+static void
+fs_lower_opcode_tgsi_indirect(struct fs_compile_context *fcc,
+ struct toy_inst *inst)
+{
+ tc_fail(&fcc->tc, "no TGSI indirection support");
+}
+
+/**
+ * Emit instructions to move sampling parameters to the message registers.
+ */
+static int
+fs_add_sampler_params_gen6(struct toy_compiler *tc, int msg_type,
+ int base_mrf, int param_size,
+ struct toy_src *coords, int num_coords,
+ struct toy_src bias_or_lod, struct toy_src ref_or_si,
+ struct toy_src *ddx, struct toy_src *ddy,
+ int num_derivs)
+{
+ int num_params, i;
+
+ assert(num_coords <= 4);
+ assert(num_derivs <= 3 && num_derivs <= num_coords);
+
+#define SAMPLER_PARAM(p) (tdst(TOY_FILE_MRF, base_mrf + (p) * param_size, 0))
+ switch (msg_type) {
+ case GEN5_SAMPLER_MESSAGE_SAMPLE:
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(i), coords[i]);
+ num_params = num_coords;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS:
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LOD:
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(i), coords[i]);
+ tc_MOV(tc, SAMPLER_PARAM(4), bias_or_lod);
+ num_params = 5;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE:
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(i), coords[i]);
+ tc_MOV(tc, SAMPLER_PARAM(4), ref_or_si);
+ num_params = 5;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS:
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(i), coords[i]);
+ for (i = 0; i < num_derivs; i++) {
+ tc_MOV(tc, SAMPLER_PARAM(4 + i * 2), ddx[i]);
+ tc_MOV(tc, SAMPLER_PARAM(5 + i * 2), ddy[i]);
+ }
+ num_params = 4 + num_derivs * 2;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS_COMPARE:
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE:
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(i), coords[i]);
+ tc_MOV(tc, SAMPLER_PARAM(4), ref_or_si);
+ tc_MOV(tc, SAMPLER_PARAM(5), bias_or_lod);
+ num_params = 6;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LD:
+ assert(num_coords <= 3);
+
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(i)), coords[i]);
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(3)), bias_or_lod);
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(4)), ref_or_si);
+ num_params = 5;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO:
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(0)), bias_or_lod);
+ num_params = 1;
+ break;
+ default:
+ tc_fail(tc, "unknown sampler opcode");
+ num_params = 0;
+ break;
+ }
+#undef SAMPLER_PARAM
+
+ return num_params * param_size;
+}
+
+static int
+fs_add_sampler_params_gen7(struct toy_compiler *tc, int msg_type,
+ int base_mrf, int param_size,
+ struct toy_src *coords, int num_coords,
+ struct toy_src bias_or_lod, struct toy_src ref_or_si,
+ struct toy_src *ddx, struct toy_src *ddy,
+ int num_derivs)
+{
+ int num_params, i;
+
+ assert(num_coords <= 4);
+ assert(num_derivs <= 3 && num_derivs <= num_coords);
+
+#define SAMPLER_PARAM(p) (tdst(TOY_FILE_MRF, base_mrf + (p) * param_size, 0))
+ switch (msg_type) {
+ case GEN5_SAMPLER_MESSAGE_SAMPLE:
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(i), coords[i]);
+ num_params = num_coords;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS:
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LOD:
+ tc_MOV(tc, SAMPLER_PARAM(0), bias_or_lod);
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(1 + i), coords[i]);
+ num_params = 1 + num_coords;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE:
+ tc_MOV(tc, SAMPLER_PARAM(0), ref_or_si);
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(1 + i), coords[i]);
+ num_params = 1 + num_coords;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS:
+ for (i = 0; i < num_coords; i++) {
+ tc_MOV(tc, SAMPLER_PARAM(i * 3), coords[i]);
+ if (i < num_derivs) {
+ tc_MOV(tc, SAMPLER_PARAM(i * 3 + 1), ddx[i]);
+ tc_MOV(tc, SAMPLER_PARAM(i * 3 + 2), ddy[i]);
+ }
+ }
+ num_params = num_coords * 3 - ((num_coords > num_derivs) ? 2 : 0);
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS_COMPARE:
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE:
+ tc_MOV(tc, SAMPLER_PARAM(0), ref_or_si);
+ tc_MOV(tc, SAMPLER_PARAM(1), bias_or_lod);
+ for (i = 0; i < num_coords; i++)
+ tc_MOV(tc, SAMPLER_PARAM(2 + i), coords[i]);
+ num_params = 2 + num_coords;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LD:
+ assert(num_coords >= 1 && num_coords <= 3);
+
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(0)), coords[0]);
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(1)), bias_or_lod);
+ for (i = 1; i < num_coords; i++)
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(1 + i)), coords[i]);
+ num_params = 1 + num_coords;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO:
+ tc_MOV(tc, tdst_d(SAMPLER_PARAM(0)), bias_or_lod);
+ num_params = 1;
+ break;
+ default:
+ tc_fail(tc, "unknown sampler opcode");
+ num_params = 0;
+ break;
+ }
+#undef SAMPLER_PARAM
+
+ return num_params * param_size;
+}
+
+/**
+ * Set up message registers and return the message descriptor for sampling.
+ */
+static struct toy_src
+fs_prepare_tgsi_sampling(struct toy_compiler *tc, const struct toy_inst *inst,
+ int base_mrf, const uint32_t *saturate_coords,
+ unsigned *ret_sampler_index)
+{
+ unsigned simd_mode, msg_type, msg_len, sampler_index, binding_table_index;
+ struct toy_src coords[4], ddx[4], ddy[4], bias_or_lod, ref_or_si;
+ int num_coords, ref_pos, num_derivs;
+ int sampler_src, param_size, i;
+
+ switch (inst->exec_size) {
+ case BRW_EXECUTE_8:
+ simd_mode = BRW_SAMPLER_SIMD_MODE_SIMD8;
+ param_size = 1;
+ break;
+ case BRW_EXECUTE_16:
+ simd_mode = BRW_SAMPLER_SIMD_MODE_SIMD16;
+ param_size = 2;
+ break;
+ default:
+ tc_fail(tc, "unsupported execute size for sampling");
+ return tsrc_null();
+ break;
+ }
+
+ num_coords = toy_tgsi_get_texture_coord_dim(inst->tex.target, &ref_pos);
+ tsrc_transpose(inst->src[0], coords);
+ bias_or_lod = tsrc_null();
+ ref_or_si = tsrc_null();
+ num_derivs = 0;
+ sampler_src = 1;
+
+ /*
+ * For TXD,
+ *
+ * src0 := (x, y, z, w)
+ * src1 := ddx
+ * src2 := ddy
+ * src3 := sampler
+ *
+ * For TEX2, TXB2, and TXL2,
+ *
+ * src0 := (x, y, z, w)
+ * src1 := (v or bias or lod, ...)
+ * src2 := sampler
+ *
+ * For TEX, TXB, TXL, and TXP,
+ *
+ * src0 := (x, y, z, w or bias or lod or projection)
+ * src1 := sampler
+ *
+ * For TXQ,
+ *
+ * src0 := (lod, ...)
+ * src1 := sampler
+ *
+ * For TXQ_LZ,
+ *
+ * src0 := sampler
+ *
+ * And for TXF,
+ *
+ * src0 := (x, y, z, w or lod)
+ * src1 := sampler
+ *
+ * State trackers should not generate opcode+texture combinations with
+ * which the two definitions conflict (e.g., TXB with SHADOW2DARRAY).
+ */
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_TEX:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 4);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE;
+ ref_or_si = coords[ref_pos];
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE;
+ }
+ break;
+ case TOY_OPCODE_TGSI_TXD:
+ if (ref_pos >= 0)
+ tc_fail(tc, "TXD with shadow sampler not supported");
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS;
+ tsrc_transpose(inst->src[1], ddx);
+ tsrc_transpose(inst->src[2], ddy);
+ num_derivs = num_coords;
+ sampler_src = 3;
+ break;
+ case TOY_OPCODE_TGSI_TXP:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 3);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE;
+ ref_or_si = coords[ref_pos];
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE;
+ }
+
+ /* project the coordinates */
+ {
+ struct toy_dst tmp[4];
+
+ tc_alloc_tmp4(tc, tmp);
+
+ tc_INV(tc, tmp[3], coords[3]);
+ for (i = 0; i < num_coords && i < 3; i++) {
+ tc_MUL(tc, tmp[i], coords[i], tsrc_from(tmp[3]));
+ coords[i] = tsrc_from(tmp[i]);
+ }
+
+ if (ref_pos >= i) {
+ tc_MUL(tc, tmp[ref_pos], ref_or_si, tsrc_from(tmp[3]));
+ ref_or_si = tsrc_from(tmp[ref_pos]);
+ }
+ }
+ break;
+ case TOY_OPCODE_TGSI_TXB:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 3);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS_COMPARE;
+ ref_or_si = coords[ref_pos];
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS;
+ }
+
+ bias_or_lod = coords[3];
+ break;
+ case TOY_OPCODE_TGSI_TXL:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 3);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE;
+ ref_or_si = coords[ref_pos];
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD;
+ }
+
+ bias_or_lod = coords[3];
+ break;
+ case TOY_OPCODE_TGSI_TXF:
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LD;
+
+ switch (inst->tex.target) {
+ case TGSI_TEXTURE_2D_MSAA:
+ case TGSI_TEXTURE_2D_ARRAY_MSAA:
+ assert(ref_pos >= 0 && ref_pos < 4);
+ /* lod is always 0 */
+ bias_or_lod = tsrc_imm_d(0);
+ ref_or_si = coords[ref_pos];
+ break;
+ default:
+ bias_or_lod = coords[3];
+ break;
+ }
+
+ /* offset the coordinates */
+ if (!tsrc_is_null(inst->tex.offsets[0])) {
+ struct toy_dst tmp[4];
+ struct toy_src offsets[4];
+
+ tc_alloc_tmp4(tc, tmp);
+ tsrc_transpose(inst->tex.offsets[0], offsets);
+
+ for (i = 0; i < num_coords; i++) {
+ tc_ADD(tc, tmp[i], coords[i], offsets[i]);
+ coords[i] = tsrc_from(tmp[i]);
+ }
+ }
+
+ sampler_src = 1;
+ break;
+ case TOY_OPCODE_TGSI_TXQ:
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO;
+ num_coords = 0;
+ bias_or_lod = coords[0];
+ break;
+ case TOY_OPCODE_TGSI_TXQ_LZ:
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO;
+ num_coords = 0;
+ sampler_src = 0;
+ break;
+ case TOY_OPCODE_TGSI_TEX2:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 5);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE;
+
+ if (ref_pos >= 4) {
+ struct toy_src src1[4];
+ tsrc_transpose(inst->src[1], src1);
+ ref_or_si = src1[ref_pos - 4];
+ }
+ else {
+ ref_or_si = coords[ref_pos];
+ }
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE;
+ }
+
+ sampler_src = 2;
+ break;
+ case TOY_OPCODE_TGSI_TXB2:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 4);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS_COMPARE;
+ ref_or_si = coords[ref_pos];
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS;
+ }
+
+ {
+ struct toy_src src1[4];
+ tsrc_transpose(inst->src[1], src1);
+ bias_or_lod = src1[0];
+ }
+
+ sampler_src = 2;
+ break;
+ case TOY_OPCODE_TGSI_TXL2:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 4);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE;
+ ref_or_si = coords[ref_pos];
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD;
+ }
+
+ {
+ struct toy_src src1[4];
+ tsrc_transpose(inst->src[1], src1);
+ bias_or_lod = src1[0];
+ }
+
+ sampler_src = 2;
+ break;
+ default:
+ assert(!"unhandled sampling opcode");
+ return tsrc_null();
+ break;
+ }
+
+ assert(inst->src[sampler_src].file == TOY_FILE_IMM);
+ sampler_index = inst->src[sampler_src].val32;
+ binding_table_index = ILO_WM_TEXTURE_SURFACE(sampler_index);
+
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 1, page 18:
+ *
+ * "Note that the (cube map) coordinates delivered to the sampling
+ * engine must already have been divided by the component with the
+ * largest absolute value."
+ */
+ switch (inst->tex.target) {
+ case TGSI_TEXTURE_CUBE:
+ case TGSI_TEXTURE_SHADOWCUBE:
+ case TGSI_TEXTURE_CUBE_ARRAY:
+ case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
+ /* TXQ does not need coordinates */
+ if (num_coords >= 3) {
+ struct toy_dst tmp[4];
+
+ tc_alloc_tmp4(tc, tmp);
+
+ tc_SEL(tc, tmp[3], tsrc_absolute(coords[0]),
+ tsrc_absolute(coords[1]), BRW_CONDITIONAL_GE);
+ tc_SEL(tc, tmp[3], tsrc_from(tmp[3]),
+ tsrc_absolute(coords[2]), BRW_CONDITIONAL_GE);
+ tc_INV(tc, tmp[3], tsrc_from(tmp[3]));
+
+ for (i = 0; i < 3; i++) {
+ tc_MUL(tc, tmp[i], coords[i], tsrc_from(tmp[3]));
+ coords[i] = tsrc_from(tmp[i]);
+ }
+ }
+ break;
+ }
+
+ /*
+ * Saturate (s, t, r). saturate_coords is set for sampler and coordinate
+ * that uses linear filtering and PIPE_TEX_WRAP_CLAMP respectively. It is
+ * so that sampling outside the border gets the correct colors.
+ */
+ for (i = 0; i < MIN2(num_coords, 3); i++) {
+ bool is_rect;
+
+ if (!(saturate_coords[i] & (1 << sampler_index)))
+ continue;
+
+ switch (inst->tex.target) {
+ case TGSI_TEXTURE_RECT:
+ case TGSI_TEXTURE_SHADOWRECT:
+ is_rect = true;
+ break;
+ default:
+ is_rect = false;
+ break;
+ }
+
+ if (is_rect) {
+ struct toy_src min, max;
+ struct toy_dst tmp;
+
+ tc_fail(tc, "GL_CLAMP with rectangle texture unsupported");
+ tmp = tc_alloc_tmp(tc);
+
+ /* saturate to [0, width] or [0, height] */
+ /* TODO TXQ? */
+ min = tsrc_imm_f(0.0f);
+ max = tsrc_imm_f(2048.0f);
+
+ tc_SEL(tc, tmp, coords[i], min, BRW_CONDITIONAL_G);
+ tc_SEL(tc, tmp, tsrc_from(tmp), max, BRW_CONDITIONAL_L);
+
+ coords[i] = tsrc_from(tmp);
+ }
+ else {
+ struct toy_dst tmp;
+ struct toy_inst *inst2;
+
+ tmp = tc_alloc_tmp(tc);
+
+ /* saturate to [0.0f, 1.0f] */
+ inst2 = tc_MOV(tc, tmp, coords[i]);
+ inst2->saturate = true;
+
+ coords[i] = tsrc_from(tmp);
+ }
+ }
+
+ /* set up sampler parameters */
+ if (tc->gen >= ILO_GEN(7)) {
+ msg_len = fs_add_sampler_params_gen7(tc, msg_type, base_mrf, param_size,
+ coords, num_coords, bias_or_lod, ref_or_si, ddx, ddy, num_derivs);
+ }
+ else {
+ msg_len = fs_add_sampler_params_gen6(tc, msg_type, base_mrf, param_size,
+ coords, num_coords, bias_or_lod, ref_or_si, ddx, ddy, num_derivs);
+ }
+
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 1, page 136:
+ *
+ * "The maximum message length allowed to the sampler is 11. This would
+ * disallow sample_d, sample_b_c, and sample_l_c with a SIMD Mode of
+ * SIMD16."
+ */
+ if (msg_len > 11)
+ tc_fail(tc, "maximum length for messages to the sampler is 11");
+
+ if (ret_sampler_index)
+ *ret_sampler_index = sampler_index;
+
+ return tsrc_imm_mdesc_sampler(tc, msg_len, 4 * param_size,
+ false, simd_mode, msg_type, sampler_index, binding_table_index);
+}
+
+static void
+fs_lower_opcode_tgsi_sampling(struct fs_compile_context *fcc,
+ struct toy_inst *inst)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ struct toy_dst dst[4], tmp[4];
+ struct toy_src desc;
+ unsigned sampler_index;
+ int swizzles[4], i;
+ bool need_filter;
+
+ desc = fs_prepare_tgsi_sampling(tc, inst,
+ fcc->first_free_mrf,
+ fcc->variant->saturate_tex_coords,
+ &sampler_index);
+
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_TXF:
+ case TOY_OPCODE_TGSI_TXQ:
+ case TOY_OPCODE_TGSI_TXQ_LZ:
+ need_filter = false;
+ break;
+ default:
+ need_filter = true;
+ break;
+ }
+
+ toy_compiler_lower_to_send(tc, inst, false, BRW_SFID_SAMPLER);
+ inst->src[0] = tsrc(TOY_FILE_MRF, fcc->first_free_mrf, 0);
+ inst->src[1] = desc;
+ for (i = 2; i < Elements(inst->src); i++)
+ inst->src[i] = tsrc_null();
+
+ /* write to temps first */
+ tc_alloc_tmp4(tc, tmp);
+ tdst_transpose(inst->dst, dst);
+ inst->dst = tmp[0];
+
+ tc_move_inst(tc, inst);
+
+ if (need_filter) {
+ assert(sampler_index < fcc->variant->num_sampler_views);
+ swizzles[0] = fcc->variant->sampler_view_swizzles[sampler_index].r;
+ swizzles[1] = fcc->variant->sampler_view_swizzles[sampler_index].g;
+ swizzles[2] = fcc->variant->sampler_view_swizzles[sampler_index].b;
+ swizzles[3] = fcc->variant->sampler_view_swizzles[sampler_index].a;
+ }
+ else {
+ swizzles[0] = PIPE_SWIZZLE_RED;
+ swizzles[1] = PIPE_SWIZZLE_GREEN;
+ swizzles[2] = PIPE_SWIZZLE_BLUE;
+ swizzles[3] = PIPE_SWIZZLE_ALPHA;
+ }
+
+ /* swizzle the results */
+ for (i = 0; i < 4; i++) {
+ switch (swizzles[i]) {
+ case PIPE_SWIZZLE_ZERO:
+ tc_MOV(tc, dst[i], tsrc_imm_f(0.0f));
+ break;
+ case PIPE_SWIZZLE_ONE:
+ tc_MOV(tc, dst[i], tsrc_imm_f(1.0f));
+ break;
+ default:
+ tc_MOV(tc, dst[i], tsrc_from(tmp[swizzles[i]]));
+ break;
+ }
+ }
+}
+
+static void
+fs_lower_opcode_derivative(struct toy_compiler *tc, struct toy_inst *inst)
+{
+ struct toy_dst dst[4];
+ struct toy_src src[4];
+ int i;
+
+ tdst_transpose(inst->dst, dst);
+ tsrc_transpose(inst->src[0], src);
+
+ /*
+ * Every four fragments are from a 2x2 subspan, with
+ *
+ * fragment 1 on the top-left,
+ * fragment 2 on the top-right,
+ * fragment 3 on the bottom-left,
+ * fragment 4 on the bottom-right.
+ *
+ * DDX should thus produce
+ *
+ * dst = src.yyww - src.xxzz
+ *
+ * and DDY should produce
+ *
+ * dst = src.zzww - src.xxyy
+ *
+ * But since we are in BRW_ALIGN_1, swizzling does not work and we have to
+ * play with the region parameters.
+ */
+ if (inst->opcode == TOY_OPCODE_DDX) {
+ for (i = 0; i < 4; i++) {
+ struct toy_src left, right;
+
+ left = tsrc_rect(src[i], TOY_RECT_220);
+ right = tsrc_offset(left, 0, 1);
+
+ tc_ADD(tc, dst[i], right, tsrc_negate(left));
+ }
+ }
+ else {
+ for (i = 0; i < 4; i++) {
+ struct toy_src top, bottom;
+
+ /* approximate with dst = src.zzzz - src.xxxx */
+ top = tsrc_rect(src[i], TOY_RECT_440);
+ bottom = tsrc_offset(top, 0, 2);
+
+ tc_ADD(tc, dst[i], bottom, tsrc_negate(top));
+ }
+ }
+
+ tc_discard_inst(tc, inst);
+}
+
+static void
+fs_lower_opcode_fb_write(struct toy_compiler *tc, struct toy_inst *inst)
+{
+ /* fs_write_fb() has set up the message registers */
+ toy_compiler_lower_to_send(tc, inst, true,
+ GEN6_SFID_DATAPORT_RENDER_CACHE);
+}
+
+static void
+fs_lower_opcode_kil(struct toy_compiler *tc, struct toy_inst *inst)
+{
+ struct toy_dst pixel_mask_dst;
+ struct toy_src f0, pixel_mask;
+ struct toy_inst *tmp;
+
+ /* lower half of r1.7:ud */
+ pixel_mask_dst = tdst_uw(tdst(TOY_FILE_GRF, 1, 7 * 4));
+ pixel_mask = tsrc_rect(tsrc_from(pixel_mask_dst), TOY_RECT_010);
+
+ f0 = tsrc_rect(tsrc_uw(tsrc(TOY_FILE_ARF, BRW_ARF_FLAG, 0)), TOY_RECT_010);
+
+ /* KILP or KIL */
+ if (tsrc_is_null(inst->src[0])) {
+ struct toy_src dummy = tsrc_uw(tsrc(TOY_FILE_GRF, 0, 0));
+ struct toy_dst f0_dst = tdst_uw(tdst(TOY_FILE_ARF, BRW_ARF_FLAG, 0));
+
+ /* create a mask that masks out all pixels */
+ tmp = tc_MOV(tc, f0_dst, tsrc_rect(tsrc_imm_uw(0xffff), TOY_RECT_010));
+ tmp->exec_size = BRW_EXECUTE_1;
+ tmp->mask_ctrl = BRW_MASK_DISABLE;
+
+ tc_CMP(tc, tdst_null(), dummy, dummy, BRW_CONDITIONAL_NEQ);
+
+ /* swapping the two src operands breaks glBitmap()!? */
+ tmp = tc_AND(tc, pixel_mask_dst, f0, pixel_mask);
+ tmp->exec_size = BRW_EXECUTE_1;
+ tmp->mask_ctrl = BRW_MASK_DISABLE;
+ }
+ else {
+ struct toy_src src[4];
+ int i;
+
+ tsrc_transpose(inst->src[0], src);
+ /* mask out killed pixels */
+ for (i = 0; i < 4; i++) {
+ tc_CMP(tc, tdst_null(), src[i], tsrc_imm_f(0.0f),
+ BRW_CONDITIONAL_GE);
+
+ /* swapping the two src operands breaks glBitmap()!? */
+ tmp = tc_AND(tc, pixel_mask_dst, f0, pixel_mask);
+ tmp->exec_size = BRW_EXECUTE_1;
+ tmp->mask_ctrl = BRW_MASK_DISABLE;
+ }
+ }
+
+ tc_discard_inst(tc, inst);
+}
+
+static void
+fs_lower_virtual_opcodes(struct fs_compile_context *fcc)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ struct toy_inst *inst;
+
+ /* lower TGSI's first, as they might be lowered to other virtual opcodes */
+ tc_head(tc);
+ while ((inst = tc_next(tc)) != NULL) {
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_IN:
+ case TOY_OPCODE_TGSI_CONST:
+ case TOY_OPCODE_TGSI_SV:
+ case TOY_OPCODE_TGSI_IMM:
+ fs_lower_opcode_tgsi_direct(fcc, inst);
+ break;
+ case TOY_OPCODE_TGSI_INDIRECT_FETCH:
+ case TOY_OPCODE_TGSI_INDIRECT_STORE:
+ fs_lower_opcode_tgsi_indirect(fcc, inst);
+ break;
+ case TOY_OPCODE_TGSI_TEX:
+ case TOY_OPCODE_TGSI_TXB:
+ case TOY_OPCODE_TGSI_TXD:
+ case TOY_OPCODE_TGSI_TXL:
+ case TOY_OPCODE_TGSI_TXP:
+ case TOY_OPCODE_TGSI_TXF:
+ case TOY_OPCODE_TGSI_TXQ:
+ case TOY_OPCODE_TGSI_TXQ_LZ:
+ case TOY_OPCODE_TGSI_TEX2:
+ case TOY_OPCODE_TGSI_TXB2:
+ case TOY_OPCODE_TGSI_TXL2:
+ case TOY_OPCODE_TGSI_SAMPLE:
+ case TOY_OPCODE_TGSI_SAMPLE_I:
+ case TOY_OPCODE_TGSI_SAMPLE_I_MS:
+ case TOY_OPCODE_TGSI_SAMPLE_B:
+ case TOY_OPCODE_TGSI_SAMPLE_C:
+ case TOY_OPCODE_TGSI_SAMPLE_C_LZ:
+ case TOY_OPCODE_TGSI_SAMPLE_D:
+ case TOY_OPCODE_TGSI_SAMPLE_L:
+ case TOY_OPCODE_TGSI_GATHER4:
+ case TOY_OPCODE_TGSI_SVIEWINFO:
+ case TOY_OPCODE_TGSI_SAMPLE_POS:
+ case TOY_OPCODE_TGSI_SAMPLE_INFO:
+ fs_lower_opcode_tgsi_sampling(fcc, inst);
+ break;
+ }
+ }
+
+ tc_head(tc);
+ while ((inst = tc_next(tc)) != NULL) {
+ switch (inst->opcode) {
+ case TOY_OPCODE_INV:
+ case TOY_OPCODE_LOG:
+ case TOY_OPCODE_EXP:
+ case TOY_OPCODE_SQRT:
+ case TOY_OPCODE_RSQ:
+ case TOY_OPCODE_SIN:
+ case TOY_OPCODE_COS:
+ case TOY_OPCODE_FDIV:
+ case TOY_OPCODE_POW:
+ case TOY_OPCODE_INT_DIV_QUOTIENT:
+ case TOY_OPCODE_INT_DIV_REMAINDER:
+ toy_compiler_lower_math(tc, inst);
+ break;
+ case TOY_OPCODE_DDX:
+ case TOY_OPCODE_DDY:
+ fs_lower_opcode_derivative(tc, inst);
+ break;
+ case TOY_OPCODE_FB_WRITE:
+ fs_lower_opcode_fb_write(tc, inst);
+ break;
+ case TOY_OPCODE_KIL:
+ fs_lower_opcode_kil(tc, inst);
+ break;
+ default:
+ if (inst->opcode > 127)
+ tc_fail(tc, "unhandled virtual opcode");
+ break;
+ }
+ }
+}
+
+/**
+ * Compile the shader.
+ */
+static bool
+fs_compile(struct fs_compile_context *fcc)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ struct ilo_shader *sh = fcc->shader;
+
+ fs_lower_virtual_opcodes(fcc);
+ toy_compiler_legalize_for_ra(tc);
+ toy_compiler_optimize(tc);
+ toy_compiler_allocate_registers(tc,
+ fcc->first_free_grf,
+ fcc->last_free_grf,
+ fcc->num_grf_per_vrf);
+ toy_compiler_legalize_for_asm(tc);
+
+ if (tc->fail) {
+ ilo_err("failed to legalize FS instructions: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_FS) {
+ ilo_printf("legalized instructions:\n");
+ toy_compiler_dump(tc);
+ ilo_printf("\n");
+ }
+
+ if (true) {
+ sh->kernel = toy_compiler_assemble(tc, &sh->kernel_size);
+ }
+ else {
+ static const uint32_t microcode[] = {
+ /* fill in the microcode here */
+ 0x0, 0x0, 0x0, 0x0,
+ };
+ const bool swap = true;
+
+ sh->kernel_size = sizeof(microcode);
+ sh->kernel = MALLOC(sh->kernel_size);
+
+ if (sh->kernel) {
+ const int num_dwords = sizeof(microcode) / 4;
+ const uint32_t *src = microcode;
+ uint32_t *dst = (uint32_t *) sh->kernel;
+ int i;
+
+ for (i = 0; i < num_dwords; i += 4) {
+ if (swap) {
+ dst[i + 0] = src[i + 3];
+ dst[i + 1] = src[i + 2];
+ dst[i + 2] = src[i + 1];
+ dst[i + 3] = src[i + 0];
+ }
+ else {
+ memcpy(dst, src, 16);
+ }
+ }
+ }
+ }
+
+ if (!sh->kernel) {
+ ilo_err("failed to compile FS: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_FS) {
+ ilo_printf("disassembly:\n");
+ toy_compiler_disassemble(tc, sh->kernel, sh->kernel_size);
+ ilo_printf("\n");
+ }
+
+ return true;
+}
+
+/**
+ * Emit instructions to write the color buffers (and the depth buffer).
+ */
+static void
+fs_write_fb(struct fs_compile_context *fcc)
+{
+ struct toy_compiler *tc = &fcc->tc;
+ int base_mrf = fcc->first_free_mrf;
+ const struct toy_dst header = tdst_ud(tdst(TOY_FILE_MRF, base_mrf, 0));
+ bool header_present = false;
+ struct toy_src desc;
+ unsigned msg_type, ctrl;
+ int color_slots[ILO_MAX_DRAW_BUFFERS], num_cbufs;
+ int pos_slot = -1, cbuf, i;
+
+ for (i = 0; i < Elements(color_slots); i++)
+ color_slots[i] = -1;
+
+ for (i = 0; i < fcc->tgsi.num_outputs; i++) {
+ if (fcc->tgsi.outputs[i].semantic_name == TGSI_SEMANTIC_COLOR) {
+ assert(fcc->tgsi.outputs[i].semantic_index < Elements(color_slots));
+ color_slots[fcc->tgsi.outputs[i].semantic_index] = i;
+ }
+ else if (fcc->tgsi.outputs[i].semantic_name == TGSI_SEMANTIC_POSITION) {
+ pos_slot = i;
+ }
+ }
+
+ num_cbufs = fcc->variant->u.fs.num_cbufs;
+ /* still need to send EOT (and probably depth) */
+ if (!num_cbufs)
+ num_cbufs = 1;
+
+ /* we need the header to specify the pixel mask or render target */
+ if (fcc->tgsi.uses_kill || num_cbufs > 1) {
+ const struct toy_src r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));
+ struct toy_inst *inst;
+
+ inst = tc_MOV(tc, header, r0);
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+ base_mrf += fcc->num_grf_per_vrf;
+
+ /* this is a two-register header */
+ if (fcc->dispatch_mode == GEN6_WM_8_DISPATCH_ENABLE) {
+ inst = tc_MOV(tc, tdst_offset(header, 1, 0), tsrc_offset(r0, 1, 0));
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+ base_mrf += fcc->num_grf_per_vrf;
+ }
+
+ header_present = true;
+ }
+
+ for (cbuf = 0; cbuf < num_cbufs; cbuf++) {
+ const int slot =
+ color_slots[(fcc->tgsi.props.fs_color0_writes_all_cbufs) ? 0 : cbuf];
+ int mrf = base_mrf, vrf;
+ struct toy_src src[4];
+
+ if (slot >= 0) {
+ const unsigned undefined_mask =
+ fcc->tgsi.outputs[slot].undefined_mask;
+ const int index = fcc->tgsi.outputs[slot].index;
+
+ vrf = toy_tgsi_get_vrf(&fcc->tgsi, TGSI_FILE_OUTPUT, 0, index);
+ if (vrf >= 0) {
+ const struct toy_src tmp = tsrc(TOY_FILE_VRF, vrf, 0);
+ tsrc_transpose(tmp, src);
+ }
+ else {
+ /* use (0, 0, 0, 0) */
+ tsrc_transpose(tsrc_imm_f(0.0f), src);
+ }
+
+ for (i = 0; i < 4; i++) {
+ const struct toy_dst dst = tdst(TOY_FILE_MRF, mrf, 0);
+
+ if (undefined_mask & (1 << i))
+ src[i] = tsrc_imm_f(0.0f);
+
+ tc_MOV(tc, dst, src[i]);
+
+ mrf += fcc->num_grf_per_vrf;
+ }
+ }
+ else {
+ /* use (0, 0, 0, 0) */
+ for (i = 0; i < 4; i++) {
+ const struct toy_dst dst = tdst(TOY_FILE_MRF, mrf, 0);
+
+ tc_MOV(tc, dst, tsrc_imm_f(0.0f));
+ mrf += fcc->num_grf_per_vrf;
+ }
+ }
+
+ /* select BLEND_STATE[rt] */
+ if (cbuf > 0) {
+ struct toy_inst *inst;
+
+ inst = tc_MOV(tc, tdst_offset(header, 0, 2), tsrc_imm_ud(cbuf));
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+ inst->exec_size = BRW_EXECUTE_1;
+ inst->src[0].rect = TOY_RECT_010;
+ }
+
+ if (cbuf == 0 && pos_slot >= 0) {
+ const int index = fcc->tgsi.outputs[pos_slot].index;
+ const struct toy_dst dst = tdst(TOY_FILE_MRF, mrf, 0);
+ struct toy_src src[4];
+ int vrf;
+
+ vrf = toy_tgsi_get_vrf(&fcc->tgsi, TGSI_FILE_OUTPUT, 0, index);
+ if (vrf >= 0) {
+ const struct toy_src tmp = tsrc(TOY_FILE_VRF, vrf, 0);
+ tsrc_transpose(tmp, src);
+ }
+ else {
+ /* use (0, 0, 0, 0) */
+ tsrc_transpose(tsrc_imm_f(0.0f), src);
+ }
+
+ /* only Z */
+ tc_MOV(tc, dst, src[2]);
+
+ mrf += fcc->num_grf_per_vrf;
+ }
+
+ msg_type = (fcc->dispatch_mode == GEN6_WM_16_DISPATCH_ENABLE) ?
+ BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE :
+ BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD8_SINGLE_SOURCE_SUBSPAN01;
+
+ ctrl = (cbuf == num_cbufs - 1) << 12 |
+ msg_type << 8;
+
+ desc = tsrc_imm_mdesc_data_port(tc, cbuf == num_cbufs - 1,
+ mrf - fcc->first_free_mrf, 0,
+ header_present, false,
+ GEN6_DATAPORT_WRITE_MESSAGE_RENDER_TARGET_WRITE,
+ ctrl, ILO_WM_DRAW_SURFACE(cbuf));
+
+ tc_add2(tc, TOY_OPCODE_FB_WRITE, tdst_null(),
+ tsrc(TOY_FILE_MRF, fcc->first_free_mrf, 0), desc);
+ }
+}
+
+/**
+ * Set up shader outputs for fixed-function units.
+ */
+static void
+fs_setup_shader_out(struct ilo_shader *sh, const struct toy_tgsi *tgsi)
+{
+ int i;
+
+ sh->out.count = tgsi->num_outputs;
+ for (i = 0; i < tgsi->num_outputs; i++) {
+ sh->out.semantic_names[i] = tgsi->outputs[i].semantic_name;
+ sh->out.semantic_indices[i] = tgsi->outputs[i].semantic_index;
+
+ if (tgsi->outputs[i].semantic_name == TGSI_SEMANTIC_POSITION)
+ sh->out.has_pos = true;
+ }
+}
+
+/**
+ * Set up shader inputs for fixed-function units.
+ */
+static void
+fs_setup_shader_in(struct ilo_shader *sh, const struct toy_tgsi *tgsi,
+ bool flatshade)
+{
+ int i;
+
+ sh->in.count = tgsi->num_inputs;
+ for (i = 0; i < tgsi->num_inputs; i++) {
+ sh->in.semantic_names[i] = tgsi->inputs[i].semantic_name;
+ sh->in.semantic_indices[i] = tgsi->inputs[i].semantic_index;
+ sh->in.interp[i] = tgsi->inputs[i].interp;
+ sh->in.centroid[i] = tgsi->inputs[i].centroid;
+
+ if (tgsi->inputs[i].semantic_name == TGSI_SEMANTIC_POSITION) {
+ sh->in.has_pos = true;
+ continue;
+ }
+ else if (tgsi->inputs[i].semantic_name == TGSI_SEMANTIC_FACE) {
+ continue;
+ }
+
+ switch (tgsi->inputs[i].interp) {
+ case TGSI_INTERPOLATE_LINEAR:
+ sh->in.has_linear_interp = true;
+
+ if (tgsi->inputs[i].centroid) {
+ sh->in.barycentric_interpolation_mode |=
+ 1 << BRW_WM_NONPERSPECTIVE_CENTROID_BARYCENTRIC;
+ }
+ else {
+ sh->in.barycentric_interpolation_mode |=
+ 1 << BRW_WM_NONPERSPECTIVE_PIXEL_BARYCENTRIC;
+ }
+ break;
+ case TGSI_INTERPOLATE_COLOR:
+ if (flatshade)
+ break;
+ /* fall through */
+ case TGSI_INTERPOLATE_PERSPECTIVE:
+ if (tgsi->inputs[i].centroid) {
+ sh->in.barycentric_interpolation_mode |=
+ 1 << BRW_WM_PERSPECTIVE_CENTROID_BARYCENTRIC;
+ }
+ else {
+ sh->in.barycentric_interpolation_mode |=
+ 1 << BRW_WM_PERSPECTIVE_PIXEL_BARYCENTRIC;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static int
+fs_setup_payloads(struct fs_compile_context *fcc)
+{
+ const struct ilo_shader *sh = fcc->shader;
+ int grf, i;
+
+ grf = 0;
+
+ /* r0: header */
+ grf++;
+
+ /* r1-r2: coordinates and etc. */
+ grf += (fcc->dispatch_mode == GEN6_WM_32_DISPATCH_ENABLE) ? 2 : 1;
+
+ for (i = 0; i < Elements(fcc->payloads); i++) {
+ int interp;
+
+ /* r3-r26 or r32-r55: barycentric interpolation parameters */
+ for (interp = 0; interp < BRW_WM_BARYCENTRIC_INTERP_MODE_COUNT; interp++) {
+ if (!(sh->in.barycentric_interpolation_mode & (1 << interp)))
+ continue;
+
+ fcc->payloads[i].barycentric_interps[interp] = grf;
+ grf += (fcc->dispatch_mode == GEN6_WM_8_DISPATCH_ENABLE) ? 2 : 4;
+ }
+
+ /* r27-r28 or r56-r57: interpoloated depth */
+ if (sh->in.has_pos) {
+ fcc->payloads[i].source_depth = grf;
+ grf += (fcc->dispatch_mode == GEN6_WM_8_DISPATCH_ENABLE) ? 1 : 2;
+ }
+
+ /* r29-r30 or r58-r59: interpoloated w */
+ if (sh->in.has_pos) {
+ fcc->payloads[i].source_w = grf;
+ grf += (fcc->dispatch_mode == GEN6_WM_8_DISPATCH_ENABLE) ? 1 : 2;
+ }
+
+ /* r31 or r60: position offset */
+ if (false) {
+ fcc->payloads[i].pos_offset = grf;
+ grf++;
+ }
+
+ if (fcc->dispatch_mode != GEN6_WM_32_DISPATCH_ENABLE)
+ break;
+ }
+
+ return grf;
+}
+
+/**
+ * Translate the TGSI tokens.
+ */
+static bool
+fs_setup_tgsi(struct toy_compiler *tc, const struct tgsi_token *tokens,
+ struct toy_tgsi *tgsi)
+{
+ if (ilo_debug & ILO_DEBUG_FS) {
+ ilo_printf("dumping fragment shader\n");
+ ilo_printf("\n");
+
+ tgsi_dump(tokens, 0);
+ ilo_printf("\n");
+ }
+
+ toy_compiler_translate_tgsi(tc, tokens, false, tgsi);
+ if (tc->fail) {
+ ilo_err("failed to translate FS TGSI tokens: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_FS) {
+ ilo_printf("TGSI translator:\n");
+ toy_tgsi_dump(tgsi);
+ ilo_printf("\n");
+ toy_compiler_dump(tc);
+ ilo_printf("\n");
+ }
+
+ return true;
+}
+
+/**
+ * Set up FS compile context. This includes translating the TGSI tokens.
+ */
+static bool
+fs_setup(struct fs_compile_context *fcc,
+ const struct ilo_shader_state *state,
+ const struct ilo_shader_variant *variant)
+{
+ int num_consts;
+
+ memset(fcc, 0, sizeof(*fcc));
+
+ fcc->shader = CALLOC_STRUCT(ilo_shader);
+ if (!fcc->shader)
+ return false;
+
+ fcc->variant = variant;
+
+ toy_compiler_init(&fcc->tc, state->info.gen);
+
+ fcc->dispatch_mode = GEN6_WM_8_DISPATCH_ENABLE;
+
+ fcc->tc.templ.access_mode = BRW_ALIGN_1;
+ if (fcc->dispatch_mode == GEN6_WM_16_DISPATCH_ENABLE) {
+ fcc->tc.templ.qtr_ctrl = GEN6_COMPRESSION_1H;
+ fcc->tc.templ.exec_size = BRW_EXECUTE_16;
+ }
+ else {
+ fcc->tc.templ.qtr_ctrl = GEN6_COMPRESSION_1Q;
+ fcc->tc.templ.exec_size = BRW_EXECUTE_8;
+ }
+
+ fcc->tc.rect_linear_width = 8;
+
+ /*
+ * The classic driver uses the sampler cache (gen6) or the data cache
+ * (gen7). Why?
+ */
+ fcc->const_cache = GEN6_SFID_DATAPORT_CONSTANT_CACHE;
+
+ if (!fs_setup_tgsi(&fcc->tc, state->info.tokens, &fcc->tgsi)) {
+ toy_compiler_cleanup(&fcc->tc);
+ FREE(fcc->shader);
+ return false;
+ }
+
+ fs_setup_shader_in(fcc->shader, &fcc->tgsi, fcc->variant->u.fs.flatshade);
+ fs_setup_shader_out(fcc->shader, &fcc->tgsi);
+
+ /* we do not make use of push constant buffers yet */
+ num_consts = 0;
+
+ fcc->first_const_grf = fs_setup_payloads(fcc);
+ fcc->first_attr_grf = fcc->first_const_grf + num_consts;
+ fcc->first_free_grf = fcc->first_attr_grf + fcc->shader->in.count * 2;
+ fcc->last_free_grf = 127;
+
+ /* m0 is reserved for system routines */
+ fcc->first_free_mrf = 1;
+ fcc->last_free_mrf = 15;
+
+ /* instructions are compressed with BRW_EXECUTE_16 */
+ fcc->num_grf_per_vrf =
+ (fcc->dispatch_mode == GEN6_WM_16_DISPATCH_ENABLE) ? 2 : 1;
+
+ if (fcc->tc.gen >= ILO_GEN(7)) {
+ fcc->last_free_grf -= 15;
+ fcc->first_free_mrf = fcc->last_free_grf + 1;
+ fcc->last_free_mrf = fcc->first_free_mrf + 14;
+ }
+
+ fcc->shader->in.start_grf = fcc->first_const_grf;
+ fcc->shader->has_kill = fcc->tgsi.uses_kill;
+ fcc->shader->dispatch_16 =
+ (fcc->dispatch_mode == GEN6_WM_16_DISPATCH_ENABLE);
+
+ return true;
+}
+
+/**
+ * Compile the fragment shader.
+ */
+struct ilo_shader *
+ilo_shader_compile_fs(const struct ilo_shader_state *state,
+ const struct ilo_shader_variant *variant)
+{
+ struct fs_compile_context fcc;
+
+ if (!fs_setup(&fcc, state, variant))
+ return NULL;
+
+ fs_write_fb(&fcc);
+
+ if (!fs_compile(&fcc)) {
+ FREE(fcc.shader);
+ fcc.shader = NULL;
+ }
+
+ toy_tgsi_cleanup(&fcc.tgsi);
+ toy_compiler_cleanup(&fcc.tc);
+
+ return fcc.shader;
+}
diff --git a/src/gallium/drivers/ilo/shader/ilo_shader_gs.c b/src/gallium/drivers/ilo/shader/ilo_shader_gs.c
new file mode 100644
index 00000000000..620e0bffc15
--- /dev/null
+++ b/src/gallium/drivers/ilo/shader/ilo_shader_gs.c
@@ -0,0 +1,1437 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2012-2013 LunarG, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Chia-I Wu <olv@lunarg.com>
+ */
+
+#include "tgsi/tgsi_dump.h"
+#include "toy_compiler.h"
+#include "toy_tgsi.h"
+#include "toy_legalize.h"
+#include "toy_optimize.h"
+#include "toy_helpers.h"
+#include "ilo_shader.h"
+
+/* XXX Below is proof-of-concept code. Skip this file! */
+
+/*
+ * TODO
+ * - primitive id is in r0.1. FS receives PID as a flat attribute.
+ * - set VUE header m0.1 for layered rendering
+ */
+struct gs_compile_context {
+ struct ilo_shader *shader;
+ const struct ilo_shader_variant *variant;
+ const struct pipe_stream_output_info *so_info;
+
+ struct toy_compiler tc;
+ struct toy_tgsi tgsi;
+ int output_map[PIPE_MAX_SHADER_OUTPUTS];
+
+ bool write_so;
+ bool write_vue;
+
+ int in_vue_size;
+ int in_vue_count;
+
+ int out_vue_size;
+ int out_vue_min_count;
+
+ bool is_static;
+
+ struct {
+ struct toy_src header;
+ struct toy_src svbi;
+ struct toy_src vues[6];
+ } payload;
+
+ struct {
+ struct toy_dst urb_write_header;
+ bool prim_start;
+ bool prim_end;
+ int prim_type;
+
+ struct toy_dst tmp;
+
+ /* buffered tgsi_outs */
+ struct toy_dst buffers[3];
+ int buffer_needed, buffer_cur;
+
+ struct toy_dst so_written;
+ struct toy_dst so_index;
+
+ struct toy_src tgsi_outs[PIPE_MAX_SHADER_OUTPUTS];
+ } vars;
+
+ struct {
+ struct toy_dst total_vertices;
+ struct toy_dst total_prims;
+
+ struct toy_dst num_vertices;
+ struct toy_dst num_vertices_in_prim;
+ } dynamic_data;
+
+ struct {
+ int total_vertices;
+ int total_prims;
+ /* this limits the max vertice count to be 256 */
+ uint32_t last_vertex[8];
+
+ int num_vertices;
+ int num_vertices_in_prim;
+ } static_data;
+
+ int first_free_grf;
+ int last_free_grf;
+ int first_free_mrf;
+ int last_free_mrf;
+};
+
+static void
+gs_COPY8(struct toy_compiler *tc, struct toy_dst dst, struct toy_src src)
+{
+ struct toy_inst *inst;
+
+ inst = tc_MOV(tc, dst, src);
+ inst->exec_size = BRW_EXECUTE_8;
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+}
+
+static void
+gs_COPY4(struct toy_compiler *tc,
+ struct toy_dst dst, int dst_ch,
+ struct toy_src src, int src_ch)
+{
+ struct toy_inst *inst;
+
+ inst = tc_MOV(tc,
+ tdst_offset(dst, 0, dst_ch),
+ tsrc_offset(src, 0, src_ch));
+ inst->exec_size = BRW_EXECUTE_4;
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+}
+
+static void
+gs_COPY1(struct toy_compiler *tc,
+ struct toy_dst dst, int dst_ch,
+ struct toy_src src, int src_ch)
+{
+ struct toy_inst *inst;
+
+ inst = tc_MOV(tc,
+ tdst_offset(dst, 0, dst_ch),
+ tsrc_rect(tsrc_offset(src, 0, src_ch), TOY_RECT_010));
+ inst->exec_size = BRW_EXECUTE_1;
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+}
+
+static void
+gs_init_vars(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_dst dst;
+
+ /* init URB_WRITE header */
+ dst = gcc->vars.urb_write_header;
+
+ gs_COPY8(tc, dst, gcc->payload.header);
+
+ gcc->vars.prim_start = true;
+ gcc->vars.prim_end = false;
+ switch (gcc->out_vue_min_count) {
+ case 1:
+ gcc->vars.prim_type = _3DPRIM_POINTLIST;
+ break;
+ case 2:
+ gcc->vars.prim_type = _3DPRIM_LINESTRIP;
+ break;
+ case 3:
+ gcc->vars.prim_type = _3DPRIM_TRISTRIP;
+ break;
+ }
+
+ if (gcc->write_so)
+ tc_MOV(tc, gcc->vars.so_written, tsrc_imm_d(0));
+}
+
+static void
+gs_save_output(struct gs_compile_context *gcc, const struct toy_src *outs)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ const struct toy_dst buf = gcc->vars.buffers[gcc->vars.buffer_cur];
+ int i;
+
+ for (i = 0; i < gcc->shader->out.count; i++)
+ tc_MOV(tc, tdst_offset(buf, i, 0), outs[i]);
+
+ /* advance the cursor */
+ gcc->vars.buffer_cur++;
+ gcc->vars.buffer_cur %= gcc->vars.buffer_needed;
+}
+
+static void
+gs_write_so(struct gs_compile_context *gcc,
+ struct toy_dst dst,
+ struct toy_src index, struct toy_src out,
+ bool send_write_commit_message,
+ int binding_table_index)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_dst mrf_header;
+ struct toy_src desc;
+
+ mrf_header = tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));
+
+ /* m0.5: destination index */
+ gs_COPY1(tc, mrf_header, 5, index, 0);
+
+ /* m0.0 - m0.3: RGBA */
+ gs_COPY4(tc, mrf_header, 0, tsrc_type(out, mrf_header.type), 0);
+
+ desc = tsrc_imm_mdesc_data_port(tc, false,
+ 1, send_write_commit_message,
+ true, send_write_commit_message,
+ GEN6_DATAPORT_WRITE_MESSAGE_STREAMED_VB_WRITE, 0,
+ binding_table_index);
+
+ tc_SEND(tc, dst, tsrc_from(mrf_header), desc,
+ GEN6_SFID_DATAPORT_RENDER_CACHE);
+}
+
+static void
+gs_write_vue(struct gs_compile_context *gcc,
+ struct toy_dst dst, struct toy_src msg_header,
+ const struct toy_src *outs, int num_outs,
+ bool eot)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_dst mrf_header;
+ struct toy_src desc;
+ int sent = 0;
+
+ mrf_header = tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));
+ gs_COPY8(tc, mrf_header, msg_header);
+
+ while (sent < num_outs) {
+ int mrf = gcc->first_free_mrf + 1;
+ const int mrf_avail = gcc->last_free_mrf - mrf + 1;
+ int msg_len, num_entries, i;
+ bool complete;
+
+ num_entries = (num_outs - sent + 1) / 2;
+ complete = true;
+ if (num_entries > mrf_avail) {
+ num_entries = mrf_avail;
+ complete = false;
+ }
+
+ for (i = 0; i < num_entries; i++) {
+ gs_COPY4(tc, tdst(TOY_FILE_MRF, mrf + i / 2, 0), 0,
+ outs[sent + 2 * i], 0);
+ if (sent + i * 2 + 1 < gcc->shader->out.count) {
+ gs_COPY4(tc, tdst(TOY_FILE_MRF, mrf + i / 2, 0), 4,
+ outs[sent + 2 * i + 1], 0);
+ }
+ mrf++;
+ }
+
+ /* do not forget the header */
+ msg_len = num_entries + 1;
+
+ if (complete) {
+ desc = tsrc_imm_mdesc_urb(tc,
+ eot, msg_len, !eot, true, true, !eot,
+ BRW_URB_SWIZZLE_NONE, sent, 0);
+ }
+ else {
+ desc = tsrc_imm_mdesc_urb(tc,
+ false, msg_len, 0, false, true, false,
+ BRW_URB_SWIZZLE_NONE, sent, 0);
+ }
+
+ tc_add2(tc, TOY_OPCODE_URB_WRITE,
+ (complete) ? dst : tdst_null(), tsrc_from(mrf_header), desc);
+
+ sent += num_entries * 2;
+ }
+}
+
+static void
+gs_ff_sync(struct gs_compile_context *gcc, struct toy_dst dst,
+ struct toy_src num_prims)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_dst mrf_header =
+ tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));
+ struct toy_src desc;
+ bool allocate;
+
+ gs_COPY8(tc, mrf_header, gcc->payload.header);
+
+ /* set NumSOVertsToWrite and NumSOPrimsNeeded */
+ if (gcc->write_so) {
+ if (num_prims.file == TOY_FILE_IMM) {
+ const uint32_t v =
+ (num_prims.val32 * gcc->in_vue_count) << 16 | num_prims.val32;
+
+ gs_COPY1(tc, mrf_header, 0, tsrc_imm_d(v), 0);
+ }
+ else {
+ struct toy_dst m0_0 = tdst_d(gcc->vars.tmp);
+
+ tc_MUL(tc, m0_0, num_prims, tsrc_imm_d(gcc->in_vue_count << 16));
+ tc_OR(tc, m0_0, tsrc_from(m0_0), num_prims);
+
+ gs_COPY1(tc, mrf_header, 0, tsrc_from(m0_0), 0);
+ }
+ }
+
+ /* set NumGSPrimsGenerated */
+ if (gcc->write_vue)
+ gs_COPY1(tc, mrf_header, 1, num_prims, 0);
+
+ /*
+ * From the Sandy Bridge PRM, volume 2 part 1, page 173:
+ *
+ * "Programming Note: If the GS stage is enabled, software must always
+ * allocate at least one GS URB Entry. This is true even if the GS
+ * thread never needs to output vertices to the pipeline, e.g., when
+ * only performing stream output. This is an artifact of the need to
+ * pass the GS thread an initial destination URB handle."
+ */
+ allocate = true;
+ desc = tsrc_imm_mdesc_urb(tc, false, 1, 1,
+ false, false, allocate,
+ BRW_URB_SWIZZLE_NONE, 0, 1);
+
+ tc_SEND(tc, dst, tsrc_from(mrf_header), desc, BRW_SFID_URB);
+}
+
+static void
+gs_discard(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_dst mrf_header;
+ struct toy_src desc;
+
+ mrf_header = tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));
+
+ gs_COPY8(tc, mrf_header, tsrc_from(gcc->vars.urb_write_header));
+
+ desc = tsrc_imm_mdesc_urb(tc,
+ true, 1, 0, true, false, false,
+ BRW_URB_SWIZZLE_NONE, 0, 0);
+
+ tc_add2(tc, TOY_OPCODE_URB_WRITE,
+ tdst_null(), tsrc_from(mrf_header), desc);
+}
+
+static void
+gs_lower_opcode_endprim(struct gs_compile_context *gcc, struct toy_inst *inst)
+{
+ /* if has control flow, set PrimEnd on the last vertex and URB_WRITE */
+}
+
+static void
+gs_lower_opcode_emit_vue_dynamic(struct gs_compile_context *gcc)
+{
+ /* TODO similar to the static version */
+
+ /*
+ * When SO is enabled and the inputs are lines or triangles, vertices are
+ * always buffered. we can defer the emission of the current vertex until
+ * the next EMIT or ENDPRIM. Or, we can emit two URB_WRITEs with the later
+ * patching the former.
+ */
+}
+
+static void
+gs_lower_opcode_emit_so_dynamic(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+
+ tc_IF(tc, tdst_null(),
+ tsrc_from(gcc->dynamic_data.num_vertices_in_prim),
+ tsrc_imm_d(gcc->out_vue_min_count),
+ BRW_CONDITIONAL_GE);
+
+ {
+ tc_ADD(tc, gcc->vars.tmp, tsrc_from(gcc->vars.so_index), tsrc_imm_d(0x03020100));
+
+ /* TODO same as static version */
+ }
+
+ tc_ENDIF(tc);
+
+ tc_ADD(tc, gcc->vars.so_index,
+ tsrc_from(gcc->vars.so_index), tsrc_imm_d(gcc->out_vue_min_count));
+}
+
+static void
+gs_lower_opcode_emit_vue_static(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_inst *inst2;
+ bool eot;
+
+ eot = (gcc->static_data.num_vertices == gcc->static_data.total_vertices);
+
+ gcc->vars.prim_end =
+ ((gcc->static_data.last_vertex[(gcc->static_data.num_vertices - 1) / 32] &
+ 1 << ((gcc->static_data.num_vertices - 1) % 32)) != 0);
+
+ if (eot && gcc->write_so) {
+ inst2 = tc_OR(tc, tdst_offset(gcc->vars.urb_write_header, 0, 2),
+ tsrc_from(gcc->vars.so_written),
+ tsrc_imm_d(gcc->vars.prim_type << 2 |
+ gcc->vars.prim_start << 1 |
+ gcc->vars.prim_end));
+ inst2->exec_size = BRW_EXECUTE_1;
+ inst2->src[0] = tsrc_rect(inst2->src[0], TOY_RECT_010);
+ inst2->src[1] = tsrc_rect(inst2->src[1], TOY_RECT_010);
+ }
+ else {
+ gs_COPY1(tc, gcc->vars.urb_write_header, 2,
+ tsrc_imm_d(gcc->vars.prim_type << 2 |
+ gcc->vars.prim_start << 1 |
+ gcc->vars.prim_end), 0);
+ }
+
+ gs_write_vue(gcc, tdst_d(gcc->vars.tmp),
+ tsrc_from(gcc->vars.urb_write_header),
+ gcc->vars.tgsi_outs,
+ gcc->shader->out.count, eot);
+
+ if (!eot) {
+ gs_COPY1(tc, gcc->vars.urb_write_header, 0,
+ tsrc_from(tdst_d(gcc->vars.tmp)), 0);
+ }
+
+ gcc->vars.prim_start = gcc->vars.prim_end;
+ gcc->vars.prim_end = false;
+}
+
+static void
+gs_lower_opcode_emit_so_static(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_inst *inst;
+ int i, j;
+
+ if (gcc->static_data.num_vertices_in_prim < gcc->out_vue_min_count)
+ return;
+
+ inst = tc_MOV(tc, tdst_w(gcc->vars.tmp), tsrc_imm_v(0x03020100));
+ inst->exec_size = BRW_EXECUTE_8;
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+
+ tc_ADD(tc, tdst_d(gcc->vars.tmp), tsrc_from(tdst_d(gcc->vars.tmp)),
+ tsrc_rect(tsrc_from(gcc->vars.so_index), TOY_RECT_010));
+
+ tc_IF(tc, tdst_null(),
+ tsrc_rect(tsrc_offset(tsrc_from(tdst_d(gcc->vars.tmp)), 0, gcc->out_vue_min_count - 1), TOY_RECT_010),
+ tsrc_rect(tsrc_offset(gcc->payload.svbi, 0, 4), TOY_RECT_010),
+ BRW_CONDITIONAL_LE);
+ {
+ for (i = 0; i < gcc->out_vue_min_count; i++) {
+ for (j = 0; j < gcc->so_info->num_outputs; j++) {
+ const int idx = gcc->so_info->output[j].register_index;
+ struct toy_src index, out;
+ int binding_table_index;
+ bool write_commit;
+
+ index = tsrc_d(tsrc_offset(tsrc_from(gcc->vars.tmp), 0, i));
+
+ if (i == gcc->out_vue_min_count - 1) {
+ out = gcc->vars.tgsi_outs[idx];
+ }
+ else {
+ /* gcc->vars.buffer_cur also points to the first vertex */
+ const int buf =
+ (gcc->vars.buffer_cur + i) % gcc->vars.buffer_needed;
+
+ out = tsrc_offset(tsrc_from(gcc->vars.buffers[buf]), idx, 0);
+ }
+
+ out = tsrc_offset(out, 0, gcc->so_info->output[j].start_component);
+
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 2, page 19:
+ *
+ * "The Kernel must do a write commit on the last write to DAP
+ * prior to a URB_WRITE with End of Thread."
+ */
+ write_commit =
+ (gcc->static_data.num_vertices == gcc->static_data.total_vertices &&
+ i == gcc->out_vue_min_count - 1 &&
+ j == gcc->so_info->num_outputs - 1);
+
+
+ binding_table_index = ILO_GS_SO_SURFACE(j);
+
+ gs_write_so(gcc, gcc->vars.tmp, index,
+ out, write_commit, binding_table_index);
+
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 1, page 168:
+ *
+ * "The write commit does not modify the destination register, but
+ * merely clears the dependency associated with the destination
+ * register. Thus, a simple "mov" instruction using the register as a
+ * source is sufficient to wait for the write commit to occur."
+ */
+ if (write_commit)
+ tc_MOV(tc, gcc->vars.tmp, tsrc_from(gcc->vars.tmp));
+ }
+ }
+
+ /* SONumPrimsWritten occupies the higher word of m0.2 of URB_WRITE */
+ tc_ADD(tc, gcc->vars.so_written,
+ tsrc_from(gcc->vars.so_written), tsrc_imm_d(1 << 16));
+ tc_ADD(tc, gcc->vars.so_index,
+ tsrc_from(gcc->vars.so_index), tsrc_imm_d(gcc->out_vue_min_count));
+ }
+ tc_ENDIF(tc);
+}
+
+static void
+gs_lower_opcode_emit_static(struct gs_compile_context *gcc,
+ struct toy_inst *inst)
+{
+ gcc->static_data.num_vertices++;
+ gcc->static_data.num_vertices_in_prim++;
+
+ if (gcc->write_so) {
+ gs_lower_opcode_emit_so_static(gcc);
+
+ if (gcc->out_vue_min_count > 1 &&
+ gcc->static_data.num_vertices != gcc->static_data.total_vertices)
+ gs_save_output(gcc, gcc->vars.tgsi_outs);
+ }
+
+ if (gcc->write_vue)
+ gs_lower_opcode_emit_vue_static(gcc);
+}
+
+static void
+gs_lower_opcode_emit_dynamic(struct gs_compile_context *gcc,
+ struct toy_inst *inst)
+{
+ struct toy_compiler *tc = &gcc->tc;
+
+ tc_ADD(tc, gcc->dynamic_data.num_vertices,
+ tsrc_from(gcc->dynamic_data.num_vertices), tsrc_imm_d(1));
+ tc_ADD(tc, gcc->dynamic_data.num_vertices_in_prim,
+ tsrc_from(gcc->dynamic_data.num_vertices_in_prim), tsrc_imm_d(1));
+
+ if (gcc->write_so) {
+ gs_lower_opcode_emit_so_dynamic(gcc);
+
+ if (gcc->out_vue_min_count > 1)
+ gs_save_output(gcc, gcc->vars.tgsi_outs);
+ }
+
+ if (gcc->write_vue)
+ gs_lower_opcode_emit_vue_dynamic(gcc);
+}
+
+static void
+gs_lower_opcode_emit(struct gs_compile_context *gcc, struct toy_inst *inst)
+{
+ if (gcc->is_static)
+ gs_lower_opcode_emit_static(gcc, inst);
+ else
+ gs_lower_opcode_emit_dynamic(gcc, inst);
+}
+
+static void
+gs_lower_opcode_tgsi_in(struct gs_compile_context *gcc,
+ struct toy_dst dst, int dim, int idx)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_src attr;
+ int slot, reg = -1, subreg;
+
+ slot = toy_tgsi_find_input(&gcc->tgsi, idx);
+ if (slot >= 0) {
+ int i;
+
+ for (i = 0; i < gcc->variant->u.gs.num_inputs; i++) {
+ if (gcc->variant->u.gs.semantic_names[i] ==
+ gcc->tgsi.inputs[slot].semantic_name &&
+ gcc->variant->u.gs.semantic_indices[i] ==
+ gcc->tgsi.inputs[slot].semantic_index) {
+ reg = i / 2;
+ subreg = (i % 2) * 4;
+ break;
+ }
+ }
+ }
+
+ if (reg < 0) {
+ tc_MOV(tc, dst, tsrc_imm_f(0.0f));
+ return;
+ }
+
+ /* fix vertex ordering for _3DPRIM_TRISTRIP_REVERSE */
+ if (gcc->in_vue_count == 3 && dim < 2) {
+ struct toy_inst *inst;
+
+ /* get PrimType */
+ inst = tc_AND(tc, tdst_d(gcc->vars.tmp),
+ tsrc_offset(gcc->payload.header, 0, 2), tsrc_imm_d(0x1f));
+ inst->exec_size = BRW_EXECUTE_1;
+ inst->src[0] = tsrc_rect(inst->src[0], TOY_RECT_010);
+ inst->src[1] = tsrc_rect(inst->src[1], TOY_RECT_010);
+
+ inst = tc_CMP(tc, tdst_null(), tsrc_from(tdst_d(gcc->vars.tmp)),
+ tsrc_imm_d(_3DPRIM_TRISTRIP_REVERSE), BRW_CONDITIONAL_NEQ);
+ inst->src[0] = tsrc_rect(inst->src[0], TOY_RECT_010);
+
+ attr = tsrc_offset(gcc->payload.vues[dim], reg, subreg);
+ inst = tc_MOV(tc, dst, attr);
+ inst->pred_ctrl = BRW_PREDICATE_NORMAL;
+
+ /* swap IN[0] and IN[1] for _3DPRIM_TRISTRIP_REVERSE */
+ dim = !dim;
+
+ attr = tsrc_offset(gcc->payload.vues[dim], reg, subreg);
+ inst = tc_MOV(tc, dst, attr);
+ inst->pred_ctrl = BRW_PREDICATE_NORMAL;
+ inst->pred_inv = true;
+ }
+ else {
+ attr = tsrc_offset(gcc->payload.vues[dim], reg, subreg);
+ tc_MOV(tc, dst, attr);
+ }
+
+
+}
+
+static void
+gs_lower_opcode_tgsi_imm(struct gs_compile_context *gcc,
+ struct toy_dst dst, int idx)
+{
+ const uint32_t *imm;
+ int ch;
+
+ imm = toy_tgsi_get_imm(&gcc->tgsi, idx, NULL);
+
+ for (ch = 0; ch < 4; ch++) {
+ struct toy_inst *inst;
+
+ /* raw moves */
+ inst = tc_MOV(&gcc->tc,
+ tdst_writemask(tdst_ud(dst), 1 << ch),
+ tsrc_imm_ud(imm[ch]));
+ inst->access_mode = BRW_ALIGN_16;
+ }
+}
+
+static void
+gs_lower_opcode_tgsi_direct(struct gs_compile_context *gcc,
+ struct toy_inst *inst)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ int dim, idx;
+
+ assert(inst->src[0].file == TOY_FILE_IMM);
+ dim = inst->src[0].val32;
+
+ assert(inst->src[1].file == TOY_FILE_IMM);
+ idx = inst->src[1].val32;
+
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_IN:
+ gs_lower_opcode_tgsi_in(gcc, inst->dst, dim, idx);
+ /* fetch all dimensions */
+ if (dim == 0) {
+ int i;
+
+ for (i = 1; i < gcc->in_vue_count; i++) {
+ const int vrf = toy_tgsi_get_vrf(&gcc->tgsi, TGSI_FILE_INPUT, i, idx);
+ struct toy_dst dst;
+
+ if (vrf < 0)
+ continue;
+
+ dst = tdst(TOY_FILE_VRF, vrf, 0);
+ gs_lower_opcode_tgsi_in(gcc, dst, i, idx);
+ }
+ }
+ break;
+ case TOY_OPCODE_TGSI_IMM:
+ assert(!dim);
+ gs_lower_opcode_tgsi_imm(gcc, inst->dst, idx);
+ break;
+ case TOY_OPCODE_TGSI_CONST:
+ case TOY_OPCODE_TGSI_SV:
+ default:
+ tc_fail(tc, "unhandled TGSI fetch");
+ break;
+ }
+
+ tc_discard_inst(tc, inst);
+}
+
+static void
+gs_lower_virtual_opcodes(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct toy_inst *inst;
+
+ tc_head(tc);
+ while ((inst = tc_next(tc)) != NULL) {
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_IN:
+ case TOY_OPCODE_TGSI_CONST:
+ case TOY_OPCODE_TGSI_SV:
+ case TOY_OPCODE_TGSI_IMM:
+ gs_lower_opcode_tgsi_direct(gcc, inst);
+ break;
+ case TOY_OPCODE_TGSI_INDIRECT_FETCH:
+ case TOY_OPCODE_TGSI_INDIRECT_STORE:
+ /* TODO similar to VS */
+ tc_fail(tc, "no indirection support");
+ tc_discard_inst(tc, inst);
+ break;
+ case TOY_OPCODE_TGSI_TEX:
+ case TOY_OPCODE_TGSI_TXB:
+ case TOY_OPCODE_TGSI_TXD:
+ case TOY_OPCODE_TGSI_TXL:
+ case TOY_OPCODE_TGSI_TXP:
+ case TOY_OPCODE_TGSI_TXF:
+ case TOY_OPCODE_TGSI_TXQ:
+ case TOY_OPCODE_TGSI_TXQ_LZ:
+ case TOY_OPCODE_TGSI_TEX2:
+ case TOY_OPCODE_TGSI_TXB2:
+ case TOY_OPCODE_TGSI_TXL2:
+ case TOY_OPCODE_TGSI_SAMPLE:
+ case TOY_OPCODE_TGSI_SAMPLE_I:
+ case TOY_OPCODE_TGSI_SAMPLE_I_MS:
+ case TOY_OPCODE_TGSI_SAMPLE_B:
+ case TOY_OPCODE_TGSI_SAMPLE_C:
+ case TOY_OPCODE_TGSI_SAMPLE_C_LZ:
+ case TOY_OPCODE_TGSI_SAMPLE_D:
+ case TOY_OPCODE_TGSI_SAMPLE_L:
+ case TOY_OPCODE_TGSI_GATHER4:
+ case TOY_OPCODE_TGSI_SVIEWINFO:
+ case TOY_OPCODE_TGSI_SAMPLE_POS:
+ case TOY_OPCODE_TGSI_SAMPLE_INFO:
+ /* TODO similar to VS */
+ tc_fail(tc, "no sampling support");
+ tc_discard_inst(tc, inst);
+ break;
+ case TOY_OPCODE_EMIT:
+ gs_lower_opcode_emit(gcc, inst);
+ tc_discard_inst(tc, inst);
+ break;
+ case TOY_OPCODE_ENDPRIM:
+ gs_lower_opcode_endprim(gcc, inst);
+ tc_discard_inst(tc, inst);
+ break;
+ default:
+ break;
+ }
+ }
+
+ tc_head(tc);
+ while ((inst = tc_next(tc)) != NULL) {
+ switch (inst->opcode) {
+ case TOY_OPCODE_INV:
+ case TOY_OPCODE_LOG:
+ case TOY_OPCODE_EXP:
+ case TOY_OPCODE_SQRT:
+ case TOY_OPCODE_RSQ:
+ case TOY_OPCODE_SIN:
+ case TOY_OPCODE_COS:
+ case TOY_OPCODE_FDIV:
+ case TOY_OPCODE_POW:
+ case TOY_OPCODE_INT_DIV_QUOTIENT:
+ case TOY_OPCODE_INT_DIV_REMAINDER:
+ toy_compiler_lower_math(tc, inst);
+ break;
+ case TOY_OPCODE_URB_WRITE:
+ toy_compiler_lower_to_send(tc, inst, false, BRW_SFID_URB);
+ break;
+ default:
+ if (inst->opcode > 127)
+ tc_fail(tc, "unhandled virtual opcode");
+ break;
+ }
+ }
+}
+
+/**
+ * Get the number of (tessellated) primitives generated by this shader.
+ * Return false if that is unknown until runtime.
+ */
+static void
+get_num_prims_static(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ const struct toy_inst *inst;
+ int num_vertices_in_prim = 0, if_depth = 0, do_depth = 0;
+ bool is_static = true;
+
+ tc_head(tc);
+ while ((inst = tc_next_no_skip(tc)) != NULL) {
+ switch (inst->opcode) {
+ case BRW_OPCODE_IF:
+ if_depth++;
+ break;
+ case BRW_OPCODE_ENDIF:
+ if_depth--;
+ break;
+ case BRW_OPCODE_DO:
+ do_depth++;
+ break;
+ case BRW_OPCODE_WHILE:
+ do_depth--;
+ break;
+ case TOY_OPCODE_EMIT:
+ if (if_depth || do_depth) {
+ is_static = false;
+ }
+ else {
+ gcc->static_data.total_vertices++;
+
+ num_vertices_in_prim++;
+ if (num_vertices_in_prim >= gcc->out_vue_min_count)
+ gcc->static_data.total_prims++;
+ }
+ break;
+ case TOY_OPCODE_ENDPRIM:
+ if (if_depth || do_depth) {
+ is_static = false;
+ }
+ else {
+ const int vertidx = gcc->static_data.total_vertices - 1;
+ const int idx = vertidx / 32;
+ const int subidx = vertidx % 32;
+
+ gcc->static_data.last_vertex[idx] |= 1 << subidx;
+ num_vertices_in_prim = 0;
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (!is_static)
+ break;
+ }
+
+ gcc->is_static = is_static;
+}
+
+/**
+ * Compile the shader.
+ */
+static bool
+gs_compile(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct ilo_shader *sh = gcc->shader;
+
+ get_num_prims_static(gcc);
+
+ if (gcc->is_static) {
+ tc_head(tc);
+
+ gs_init_vars(gcc);
+ gs_ff_sync(gcc, tdst_d(gcc->vars.tmp), tsrc_imm_d(gcc->static_data.total_prims));
+ gs_COPY1(tc, gcc->vars.urb_write_header, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 0);
+ if (gcc->write_so)
+ gs_COPY4(tc, gcc->vars.so_index, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 1);
+
+ tc_tail(tc);
+ }
+ else {
+ tc_fail(tc, "no control flow support");
+ return false;
+ }
+
+ if (!gcc->write_vue)
+ gs_discard(gcc);
+
+ gs_lower_virtual_opcodes(gcc);
+ toy_compiler_legalize_for_ra(tc);
+ toy_compiler_optimize(tc);
+ toy_compiler_allocate_registers(tc,
+ gcc->first_free_grf,
+ gcc->last_free_grf,
+ 1);
+ toy_compiler_legalize_for_asm(tc);
+
+ if (tc->fail) {
+ ilo_err("failed to legalize GS instructions: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_GS) {
+ ilo_printf("legalized instructions:\n");
+ toy_compiler_dump(tc);
+ ilo_printf("\n");
+ }
+
+ sh->kernel = toy_compiler_assemble(tc, &sh->kernel_size);
+ if (!sh->kernel)
+ return false;
+
+ if (ilo_debug & ILO_DEBUG_GS) {
+ ilo_printf("disassembly:\n");
+ toy_compiler_disassemble(tc, sh->kernel, sh->kernel_size);
+ ilo_printf("\n");
+ }
+
+ return true;
+}
+
+static bool
+gs_compile_passthrough(struct gs_compile_context *gcc)
+{
+ struct toy_compiler *tc = &gcc->tc;
+ struct ilo_shader *sh = gcc->shader;
+
+ gcc->is_static = true;
+ gcc->static_data.total_vertices = gcc->in_vue_count;
+ gcc->static_data.total_prims = 1;
+ gcc->static_data.last_vertex[0] = 1 << (gcc->in_vue_count - 1);
+
+ gs_init_vars(gcc);
+ gs_ff_sync(gcc, tdst_d(gcc->vars.tmp), tsrc_imm_d(gcc->static_data.total_prims));
+ gs_COPY1(tc, gcc->vars.urb_write_header, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 0);
+ if (gcc->write_so)
+ gs_COPY4(tc, gcc->vars.so_index, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 1);
+
+ {
+ int vert, attr;
+
+ for (vert = 0; vert < gcc->out_vue_min_count; vert++) {
+ for (attr = 0; attr < gcc->shader->out.count; attr++) {
+ tc_MOV(tc, tdst_from(gcc->vars.tgsi_outs[attr]),
+ tsrc_offset(gcc->payload.vues[vert], attr / 2, (attr % 2) * 4));
+ }
+
+ gs_lower_opcode_emit(gcc, NULL);
+ }
+
+ gs_lower_opcode_endprim(gcc, NULL);
+ }
+
+ if (!gcc->write_vue)
+ gs_discard(gcc);
+
+ gs_lower_virtual_opcodes(gcc);
+
+ toy_compiler_legalize_for_ra(tc);
+ toy_compiler_optimize(tc);
+ toy_compiler_allocate_registers(tc,
+ gcc->first_free_grf,
+ gcc->last_free_grf,
+ 1);
+
+ toy_compiler_legalize_for_asm(tc);
+
+ if (tc->fail) {
+ ilo_err("failed to translate GS TGSI tokens: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_GS) {
+ int i;
+
+ ilo_printf("VUE count %d, VUE size %d\n",
+ gcc->in_vue_count, gcc->in_vue_size);
+ ilo_printf("%srasterizer discard\n",
+ (gcc->variant->u.gs.rasterizer_discard) ? "" : "no ");
+
+ for (i = 0; i < gcc->so_info->num_outputs; i++) {
+ ilo_printf("SO[%d] = OUT[%d]\n", i,
+ gcc->so_info->output[i].register_index);
+ }
+
+ ilo_printf("legalized instructions:\n");
+ toy_compiler_dump(tc);
+ ilo_printf("\n");
+ }
+
+ sh->kernel = toy_compiler_assemble(tc, &sh->kernel_size);
+ if (!sh->kernel) {
+ ilo_err("failed to compile GS: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_GS) {
+ ilo_printf("disassembly:\n");
+ toy_compiler_disassemble(tc, sh->kernel, sh->kernel_size);
+ ilo_printf("\n");
+ }
+
+ return true;
+}
+
+/**
+ * Translate the TGSI tokens.
+ */
+static bool
+gs_setup_tgsi(struct toy_compiler *tc, const struct tgsi_token *tokens,
+ struct toy_tgsi *tgsi)
+{
+ if (ilo_debug & ILO_DEBUG_GS) {
+ ilo_printf("dumping geometry shader\n");
+ ilo_printf("\n");
+
+ tgsi_dump(tokens, 0);
+ ilo_printf("\n");
+ }
+
+ toy_compiler_translate_tgsi(tc, tokens, true, tgsi);
+ if (tc->fail)
+ return false;
+
+ if (ilo_debug & ILO_DEBUG_GS) {
+ ilo_printf("TGSI translator:\n");
+ toy_tgsi_dump(tgsi);
+ ilo_printf("\n");
+ toy_compiler_dump(tc);
+ ilo_printf("\n");
+ }
+
+ return true;
+}
+
+/**
+ * Set up shader inputs for fixed-function units.
+ */
+static void
+gs_setup_shader_in(struct ilo_shader *sh,
+ const struct ilo_shader_variant *variant)
+{
+ int i;
+
+ for (i = 0; i < variant->u.gs.num_inputs; i++) {
+ sh->in.semantic_names[i] = variant->u.gs.semantic_names[i];
+ sh->in.semantic_indices[i] = variant->u.gs.semantic_indices[i];
+ sh->in.interp[i] = TGSI_INTERPOLATE_CONSTANT;
+ sh->in.centroid[i] = false;
+ }
+
+ sh->in.count = variant->u.gs.num_inputs;
+
+ sh->in.has_pos = false;
+ sh->in.has_linear_interp = false;
+ sh->in.barycentric_interpolation_mode = 0;
+}
+
+/**
+ * Set up shader outputs for fixed-function units.
+ *
+ * XXX share the code with VS
+ */
+static void
+gs_setup_shader_out(struct ilo_shader *sh, const struct toy_tgsi *tgsi,
+ bool output_clipdist, int *output_map)
+{
+ int psize_slot = -1, pos_slot = -1;
+ int clipdist_slot[2] = { -1, -1 };
+ int color_slot[4] = { -1, -1, -1, -1 };
+ int num_outs, i;
+
+ /* find out the slots of outputs that need special care */
+ for (i = 0; i < tgsi->num_outputs; i++) {
+ switch (tgsi->outputs[i].semantic_name) {
+ case TGSI_SEMANTIC_PSIZE:
+ psize_slot = i;
+ break;
+ case TGSI_SEMANTIC_POSITION:
+ pos_slot = i;
+ break;
+ case TGSI_SEMANTIC_CLIPDIST:
+ if (tgsi->outputs[i].semantic_index)
+ clipdist_slot[1] = i;
+ else
+ clipdist_slot[0] = i;
+ break;
+ case TGSI_SEMANTIC_COLOR:
+ if (tgsi->outputs[i].semantic_index)
+ color_slot[2] = i;
+ else
+ color_slot[0] = i;
+ break;
+ case TGSI_SEMANTIC_BCOLOR:
+ if (tgsi->outputs[i].semantic_index)
+ color_slot[3] = i;
+ else
+ color_slot[1] = i;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* the first two VUEs are always PSIZE and POSITION */
+ num_outs = 2;
+ sh->out.semantic_names[0] = TGSI_SEMANTIC_PSIZE;
+ sh->out.semantic_indices[0] = 0;
+ sh->out.semantic_names[1] = TGSI_SEMANTIC_POSITION;
+ sh->out.semantic_indices[1] = 0;
+
+ sh->out.has_pos = true;
+ output_map[0] = psize_slot;
+ output_map[1] = pos_slot;
+
+ /* followed by optional clip distances */
+ if (output_clipdist) {
+ sh->out.semantic_names[num_outs] = TGSI_SEMANTIC_CLIPDIST;
+ sh->out.semantic_indices[num_outs] = 0;
+ output_map[num_outs++] = clipdist_slot[0];
+
+ sh->out.semantic_names[num_outs] = TGSI_SEMANTIC_CLIPDIST;
+ sh->out.semantic_indices[num_outs] = 1;
+ output_map[num_outs++] = clipdist_slot[1];
+ }
+
+ /*
+ * make BCOLOR follow COLOR so that we can make use of
+ * ATTRIBUTE_SWIZZLE_INPUTATTR_FACING in 3DSTATE_SF
+ */
+ for (i = 0; i < 4; i++) {
+ const int slot = color_slot[i];
+
+ if (slot < 0)
+ continue;
+
+ sh->out.semantic_names[num_outs] = tgsi->outputs[slot].semantic_name;
+ sh->out.semantic_indices[num_outs] = tgsi->outputs[slot].semantic_index;
+
+ output_map[num_outs++] = slot;
+ }
+
+ /* add the rest of the outputs */
+ for (i = 0; i < tgsi->num_outputs; i++) {
+ switch (tgsi->outputs[i].semantic_name) {
+ case TGSI_SEMANTIC_PSIZE:
+ case TGSI_SEMANTIC_POSITION:
+ case TGSI_SEMANTIC_CLIPDIST:
+ case TGSI_SEMANTIC_COLOR:
+ case TGSI_SEMANTIC_BCOLOR:
+ break;
+ default:
+ sh->out.semantic_names[num_outs] = tgsi->outputs[i].semantic_name;
+ sh->out.semantic_indices[num_outs] = tgsi->outputs[i].semantic_index;
+ output_map[num_outs++] = i;
+ break;
+ }
+ }
+
+ sh->out.count = num_outs;
+}
+
+static void
+gs_setup_vars(struct gs_compile_context *gcc)
+{
+ int grf = gcc->first_free_grf;
+ int i;
+
+ gcc->vars.urb_write_header = tdst_d(tdst(TOY_FILE_GRF, grf, 0));
+ grf++;
+
+ gcc->vars.tmp = tdst(TOY_FILE_GRF, grf, 0);
+ grf++;
+
+ if (gcc->write_so) {
+ gcc->vars.buffer_needed = gcc->out_vue_min_count - 1;
+ for (i = 0; i < gcc->vars.buffer_needed; i++) {
+ gcc->vars.buffers[i] = tdst(TOY_FILE_GRF, grf, 0);
+ grf += gcc->shader->out.count;
+ }
+
+ gcc->vars.so_written = tdst_d(tdst(TOY_FILE_GRF, grf, 0));
+ grf++;
+
+ gcc->vars.so_index = tdst_d(tdst(TOY_FILE_GRF, grf, 0));
+ grf++;
+ }
+
+ gcc->first_free_grf = grf;
+
+ if (!gcc->tgsi.reg_mapping) {
+ for (i = 0; i < gcc->shader->out.count; i++)
+ gcc->vars.tgsi_outs[i] = tsrc(TOY_FILE_GRF, grf++, 0);
+
+ gcc->first_free_grf = grf;
+ return;
+ }
+
+ for (i = 0; i < gcc->shader->out.count; i++) {
+ const int slot = gcc->output_map[i];
+ const int vrf = (slot >= 0) ? toy_tgsi_get_vrf(&gcc->tgsi,
+ TGSI_FILE_OUTPUT, 0, gcc->tgsi.outputs[slot].index) : -1;
+
+ if (vrf >= 0)
+ gcc->vars.tgsi_outs[i] = tsrc(TOY_FILE_VRF, vrf, 0);
+ else
+ gcc->vars.tgsi_outs[i] = (i == 0) ? tsrc_imm_d(0) : tsrc_imm_f(0.0f);
+ }
+}
+
+static void
+gs_setup_payload(struct gs_compile_context *gcc)
+{
+ int grf, i;
+
+ grf = 0;
+
+ /* r0: payload header */
+ gcc->payload.header = tsrc_d(tsrc(TOY_FILE_GRF, grf, 0));
+ grf++;
+
+ /* r1: SVBI */
+ if (gcc->write_so) {
+ gcc->payload.svbi = tsrc_ud(tsrc(TOY_FILE_GRF, grf, 0));
+ grf++;
+ }
+
+ /* URB data */
+ gcc->shader->in.start_grf = grf;
+
+ /* no pull constants */
+
+ /* VUEs */
+ for (i = 0; i < gcc->in_vue_count; i++) {
+ gcc->payload.vues[i] = tsrc(TOY_FILE_GRF, grf, 0);
+ grf += gcc->in_vue_size;
+ }
+
+ gcc->first_free_grf = grf;
+ gcc->last_free_grf = 127;
+}
+
+/**
+ * Set up GS compile context. This includes translating the TGSI tokens.
+ */
+static bool
+gs_setup(struct gs_compile_context *gcc,
+ const struct ilo_shader_state *state,
+ const struct ilo_shader_variant *variant,
+ int num_verts)
+{
+ memset(gcc, 0, sizeof(*gcc));
+
+ gcc->shader = CALLOC_STRUCT(ilo_shader);
+ if (!gcc->shader)
+ return false;
+
+ gcc->variant = variant;
+ gcc->so_info = &state->info.stream_output;
+
+ toy_compiler_init(&gcc->tc, state->info.gen);
+
+ gcc->write_so = (state->info.stream_output.num_outputs > 0);
+ gcc->write_vue = !gcc->variant->u.gs.rasterizer_discard;
+
+ gcc->tc.templ.access_mode = BRW_ALIGN_16;
+ gcc->tc.templ.exec_size = BRW_EXECUTE_4;
+ gcc->tc.rect_linear_width = 4;
+
+ if (state->info.tokens) {
+ if (!gs_setup_tgsi(&gcc->tc, state->info.tokens, &gcc->tgsi)) {
+ toy_compiler_cleanup(&gcc->tc);
+ FREE(gcc->shader);
+ return false;
+ }
+
+ switch (gcc->tgsi.props.gs_input_prim) {
+ case PIPE_PRIM_POINTS:
+ gcc->in_vue_count = 1;
+ break;
+ case PIPE_PRIM_LINES:
+ gcc->in_vue_count = 2;
+ gcc->shader->in.discard_adj = true;
+ break;
+ case PIPE_PRIM_TRIANGLES:
+ gcc->in_vue_count = 3;
+ gcc->shader->in.discard_adj = true;
+ break;
+ case PIPE_PRIM_LINES_ADJACENCY:
+ gcc->in_vue_count = 4;
+ break;
+ case PIPE_PRIM_TRIANGLES_ADJACENCY:
+ gcc->in_vue_count = 6;
+ break;
+ default:
+ tc_fail(&gcc->tc, "unsupported GS input type");
+ gcc->in_vue_count = 0;
+ break;
+ }
+
+ switch (gcc->tgsi.props.gs_output_prim) {
+ case PIPE_PRIM_POINTS:
+ gcc->out_vue_min_count = 1;
+ break;
+ case PIPE_PRIM_LINE_STRIP:
+ gcc->out_vue_min_count = 2;
+ break;
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ gcc->out_vue_min_count = 3;
+ break;
+ default:
+ tc_fail(&gcc->tc, "unsupported GS output type");
+ gcc->out_vue_min_count = 0;
+ break;
+ }
+ }
+ else {
+ int i;
+
+ gcc->in_vue_count = num_verts;
+ gcc->out_vue_min_count = num_verts;
+
+ gcc->tgsi.num_outputs = gcc->variant->u.gs.num_inputs;
+ for (i = 0; i < gcc->variant->u.gs.num_inputs; i++) {
+ gcc->tgsi.outputs[i].semantic_name =
+ gcc->variant->u.gs.semantic_names[i];
+ gcc->tgsi.outputs[i].semantic_index =
+ gcc->variant->u.gs.semantic_indices[i];
+ }
+ }
+
+ gcc->tc.templ.access_mode = BRW_ALIGN_1;
+
+ gs_setup_shader_in(gcc->shader, gcc->variant);
+ gs_setup_shader_out(gcc->shader, &gcc->tgsi, false, gcc->output_map);
+
+ gcc->in_vue_size = (gcc->shader->in.count + 1) / 2;
+
+ gcc->out_vue_size = (gcc->shader->out.count + 1) / 2;
+
+ gs_setup_payload(gcc);
+ gs_setup_vars(gcc);
+
+ /* m0 is reserved for system routines */
+ gcc->first_free_mrf = 1;
+ gcc->last_free_mrf = 15;
+
+ return true;
+}
+
+/**
+ * Compile the geometry shader.
+ */
+struct ilo_shader *
+ilo_shader_compile_gs(const struct ilo_shader_state *state,
+ const struct ilo_shader_variant *variant)
+{
+ struct gs_compile_context gcc;
+
+ if (!gs_setup(&gcc, state, variant, 0))
+ return NULL;
+
+ if (!gs_compile(&gcc)) {
+ FREE(gcc.shader);
+ gcc.shader = NULL;
+ }
+
+ toy_tgsi_cleanup(&gcc.tgsi);
+ toy_compiler_cleanup(&gcc.tc);
+
+ return gcc.shader;;
+}
+
+static bool
+append_gs_to_vs(struct ilo_shader *vs, struct ilo_shader *gs, int num_verts)
+{
+ void *combined;
+ int gs_offset;
+
+ if (!gs)
+ return false;
+
+ /* kernels must be aligned to 64-byte */
+ gs_offset = align(vs->kernel_size, 64);
+ combined = REALLOC(vs->kernel, vs->kernel_size,
+ gs_offset + gs->kernel_size);
+ if (!combined)
+ return false;
+
+ memcpy(combined + gs_offset, gs->kernel, gs->kernel_size);
+
+ vs->kernel = combined;
+ vs->kernel_size = gs_offset + gs->kernel_size;
+
+ vs->stream_output = true;
+ vs->gs_offsets[num_verts - 1] = gs_offset;
+ vs->gs_start_grf = gs->in.start_grf;
+
+ ilo_shader_destroy(gs);
+
+ return true;
+}
+
+bool
+ilo_shader_compile_gs_passthrough(const struct ilo_shader_state *vs_state,
+ const struct ilo_shader_variant *vs_variant,
+ const int *so_mapping,
+ struct ilo_shader *vs)
+{
+ struct gs_compile_context gcc;
+ struct ilo_shader_state state;
+ struct ilo_shader_variant variant;
+ const int num_verts = 3;
+ int i;
+
+ /* init GS state and variant */
+ state = *vs_state;
+ state.info.tokens = NULL;
+ for (i = 0; i < state.info.stream_output.num_outputs; i++) {
+ const int reg = state.info.stream_output.output[i].register_index;
+
+ state.info.stream_output.output[i].register_index = so_mapping[reg];
+ }
+
+ variant = *vs_variant;
+ variant.u.gs.rasterizer_discard = vs_variant->u.vs.rasterizer_discard;
+ variant.u.gs.num_inputs = vs->out.count;
+ for (i = 0; i < vs->out.count; i++) {
+ variant.u.gs.semantic_names[i] =
+ vs->out.semantic_names[i];
+ variant.u.gs.semantic_indices[i] =
+ vs->out.semantic_indices[i];
+ }
+
+ if (!gs_setup(&gcc, &state, &variant, num_verts))
+ return false;
+
+ if (!gs_compile_passthrough(&gcc)) {
+ FREE(gcc.shader);
+ gcc.shader = NULL;
+ }
+
+ /* no need to call toy_tgsi_cleanup() */
+ toy_compiler_cleanup(&gcc.tc);
+
+ return append_gs_to_vs(vs, gcc.shader, num_verts);
+}
diff --git a/src/gallium/drivers/ilo/shader/ilo_shader_vs.c b/src/gallium/drivers/ilo/shader/ilo_shader_vs.c
new file mode 100644
index 00000000000..09a7b0424e7
--- /dev/null
+++ b/src/gallium/drivers/ilo/shader/ilo_shader_vs.c
@@ -0,0 +1,1273 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2012-2013 LunarG, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Chia-I Wu <olv@lunarg.com>
+ */
+
+#include "tgsi/tgsi_dump.h"
+#include "toy_compiler.h"
+#include "toy_tgsi.h"
+#include "toy_legalize.h"
+#include "toy_optimize.h"
+#include "toy_helpers.h"
+#include "ilo_context.h"
+#include "ilo_shader.h"
+
+struct vs_compile_context {
+ struct ilo_shader *shader;
+ const struct ilo_shader_variant *variant;
+
+ struct toy_compiler tc;
+ struct toy_tgsi tgsi;
+ enum brw_message_target const_cache;
+
+ int output_map[PIPE_MAX_SHADER_OUTPUTS];
+
+ int num_grf_per_vrf;
+ int first_const_grf;
+ int first_vue_grf;
+ int first_free_grf;
+ int last_free_grf;
+
+ int first_free_mrf;
+ int last_free_mrf;
+};
+
+static void
+vs_lower_opcode_tgsi_in(struct vs_compile_context *vcc,
+ struct toy_dst dst, int dim, int idx)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ int slot;
+
+ assert(!dim);
+
+ slot = toy_tgsi_find_input(&vcc->tgsi, idx);
+ if (slot >= 0) {
+ const int first_in_grf = vcc->first_vue_grf +
+ (vcc->shader->in.count - vcc->tgsi.num_inputs);
+ const int grf = first_in_grf + vcc->tgsi.inputs[slot].semantic_index;
+ const struct toy_src src = tsrc(TOY_FILE_GRF, grf, 0);
+
+ tc_MOV(tc, dst, src);
+ }
+ else {
+ /* undeclared input */
+ tc_MOV(tc, dst, tsrc_imm_f(0.0f));
+ }
+}
+
+static void
+vs_lower_opcode_tgsi_const_gen6(struct vs_compile_context *vcc,
+ struct toy_dst dst, int dim,
+ struct toy_src idx)
+{
+ const struct toy_dst header =
+ tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf, 0));
+ const struct toy_dst block_offsets =
+ tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf + 1, 0));
+ const struct toy_src r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));
+ struct toy_compiler *tc = &vcc->tc;
+ unsigned msg_type, msg_ctrl, msg_len;
+ struct toy_inst *inst;
+ struct toy_src desc;
+
+ /* set message header */
+ inst = tc_MOV(tc, header, r0);
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+
+ /* set block offsets */
+ tc_MOV(tc, block_offsets, idx);
+
+ msg_type = GEN6_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ;
+ msg_ctrl = BRW_DATAPORT_OWORD_DUAL_BLOCK_1OWORD << 8;;
+ msg_len = 2;
+
+ desc = tsrc_imm_mdesc_data_port(tc, false, msg_len, 1, true, false,
+ msg_type, msg_ctrl, ILO_VS_CONST_SURFACE(dim));
+
+ tc_SEND(tc, dst, tsrc_from(header), desc, vcc->const_cache);
+}
+
+static void
+vs_lower_opcode_tgsi_const_gen7(struct vs_compile_context *vcc,
+ struct toy_dst dst, int dim,
+ struct toy_src idx)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ const struct toy_dst offset =
+ tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf, 0));
+ struct toy_src desc;
+
+ /*
+ * In 259b65e2e7938de4aab323033cfe2b33369ddb07, pull constant load was
+ * changed from OWord Dual Block Read to ld to increase performance in the
+ * classic driver. Since we use the constant cache instead of the data
+ * cache, I wonder if we still want to follow the classic driver.
+ */
+
+ /* set offset */
+ tc_MOV(tc, offset, idx);
+
+ desc = tsrc_imm_mdesc_sampler(tc, 1, 1, false,
+ BRW_SAMPLER_SIMD_MODE_SIMD4X2,
+ GEN5_SAMPLER_MESSAGE_SAMPLE_LD,
+ 0,
+ ILO_VS_CONST_SURFACE(dim));
+
+ tc_SEND(tc, dst, tsrc_from(offset), desc, BRW_SFID_SAMPLER);
+}
+
+static void
+vs_lower_opcode_tgsi_imm(struct vs_compile_context *vcc,
+ struct toy_dst dst, int idx)
+{
+ const uint32_t *imm;
+ int ch;
+
+ imm = toy_tgsi_get_imm(&vcc->tgsi, idx, NULL);
+
+ for (ch = 0; ch < 4; ch++) {
+ /* raw moves */
+ tc_MOV(&vcc->tc,
+ tdst_writemask(tdst_ud(dst), 1 << ch),
+ tsrc_imm_ud(imm[ch]));
+ }
+}
+
+
+static void
+vs_lower_opcode_tgsi_sv(struct vs_compile_context *vcc,
+ struct toy_dst dst, int dim, int idx)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ const struct toy_tgsi *tgsi = &vcc->tgsi;
+ int slot;
+
+ assert(!dim);
+
+ slot = toy_tgsi_find_system_value(tgsi, idx);
+ if (slot < 0)
+ return;
+
+ switch (tgsi->system_values[slot].semantic_name) {
+ case TGSI_SEMANTIC_INSTANCEID:
+ case TGSI_SEMANTIC_VERTEXID:
+ /*
+ * In 3DSTATE_VERTEX_ELEMENTS, we prepend an extra vertex element for
+ * the generated IDs, with VID in the X channel and IID in the Y
+ * channel.
+ */
+ {
+ const int grf = vcc->first_vue_grf;
+ const struct toy_src src = tsrc(TOY_FILE_GRF, grf, 0);
+ const enum toy_swizzle swizzle =
+ (tgsi->system_values[slot].semantic_name ==
+ TGSI_SEMANTIC_INSTANCEID) ? TOY_SWIZZLE_Y : TOY_SWIZZLE_X;
+
+ tc_MOV(tc, tdst_d(dst), tsrc_d(tsrc_swizzle1(src, swizzle)));
+ }
+ break;
+ case TGSI_SEMANTIC_PRIMID:
+ default:
+ tc_fail(tc, "unhandled system value");
+ tc_MOV(tc, dst, tsrc_imm_d(0));
+ break;
+ }
+}
+
+static void
+vs_lower_opcode_tgsi_direct(struct vs_compile_context *vcc,
+ struct toy_inst *inst)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ int dim, idx;
+
+ assert(inst->src[0].file == TOY_FILE_IMM);
+ dim = inst->src[0].val32;
+
+ assert(inst->src[1].file == TOY_FILE_IMM);
+ idx = inst->src[1].val32;
+
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_IN:
+ vs_lower_opcode_tgsi_in(vcc, inst->dst, dim, idx);
+ break;
+ case TOY_OPCODE_TGSI_CONST:
+ if (tc->gen >= ILO_GEN(7))
+ vs_lower_opcode_tgsi_const_gen7(vcc, inst->dst, dim, inst->src[1]);
+ else
+ vs_lower_opcode_tgsi_const_gen6(vcc, inst->dst, dim, inst->src[1]);
+ break;
+ case TOY_OPCODE_TGSI_SV:
+ vs_lower_opcode_tgsi_sv(vcc, inst->dst, dim, idx);
+ break;
+ case TOY_OPCODE_TGSI_IMM:
+ assert(!dim);
+ vs_lower_opcode_tgsi_imm(vcc, inst->dst, idx);
+ break;
+ default:
+ tc_fail(tc, "unhandled TGSI fetch");
+ break;
+ }
+
+ tc_discard_inst(tc, inst);
+}
+
+static void
+vs_lower_opcode_tgsi_indirect(struct vs_compile_context *vcc,
+ struct toy_inst *inst)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ enum tgsi_file_type file;
+ int dim, idx;
+ struct toy_src indirect_dim, indirect_idx;
+
+ assert(inst->src[0].file == TOY_FILE_IMM);
+ file = inst->src[0].val32;
+
+ assert(inst->src[1].file == TOY_FILE_IMM);
+ dim = inst->src[1].val32;
+ indirect_dim = inst->src[2];
+
+ assert(inst->src[3].file == TOY_FILE_IMM);
+ idx = inst->src[3].val32;
+ indirect_idx = inst->src[4];
+
+ /* no dimension indirection */
+ assert(indirect_dim.file == TOY_FILE_IMM);
+ dim += indirect_dim.val32;
+
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_INDIRECT_FETCH:
+ if (file == TGSI_FILE_CONSTANT) {
+ if (idx) {
+ struct toy_dst tmp = tc_alloc_tmp(tc);
+
+ tc_ADD(tc, tmp, indirect_idx, tsrc_imm_d(idx));
+ indirect_idx = tsrc_from(tmp);
+ }
+
+ if (tc->gen >= ILO_GEN(7))
+ vs_lower_opcode_tgsi_const_gen7(vcc, inst->dst, dim, indirect_idx);
+ else
+ vs_lower_opcode_tgsi_const_gen6(vcc, inst->dst, dim, indirect_idx);
+ break;
+ }
+ /* fall through */
+ case TOY_OPCODE_TGSI_INDIRECT_STORE:
+ default:
+ tc_fail(tc, "unhandled TGSI indirection");
+ break;
+ }
+
+ tc_discard_inst(tc, inst);
+}
+
+/**
+ * Emit instructions to move sampling parameters to the message registers.
+ */
+static int
+vs_add_sampler_params(struct toy_compiler *tc, int msg_type, int base_mrf,
+ struct toy_src coords, int num_coords,
+ struct toy_src bias_or_lod, struct toy_src ref_or_si,
+ struct toy_src ddx, struct toy_src ddy, int num_derivs)
+{
+ const unsigned coords_writemask = (1 << num_coords) - 1;
+ struct toy_dst m[3];
+ int num_params, i;
+
+ assert(num_coords <= 4);
+ assert(num_derivs <= 3 && num_derivs <= num_coords);
+
+ for (i = 0; i < Elements(m); i++)
+ m[i] = tdst(TOY_FILE_MRF, base_mrf + i, 0);
+
+ switch (msg_type) {
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LOD:
+ tc_MOV(tc, tdst_writemask(m[0], coords_writemask), coords);
+ tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_X), bias_or_lod);
+ num_params = 5;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS:
+ tc_MOV(tc, tdst_writemask(m[0], coords_writemask), coords);
+ tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_XZ),
+ tsrc_swizzle(ddx, 0, 0, 1, 1));
+ tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_YW),
+ tsrc_swizzle(ddy, 0, 0, 1, 1));
+ if (num_derivs > 2) {
+ tc_MOV(tc, tdst_writemask(m[2], TOY_WRITEMASK_X),
+ tsrc_swizzle1(ddx, 2));
+ tc_MOV(tc, tdst_writemask(m[2], TOY_WRITEMASK_Y),
+ tsrc_swizzle1(ddy, 2));
+ }
+ num_params = 4 + num_derivs * 2;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE:
+ tc_MOV(tc, tdst_writemask(m[0], coords_writemask), coords);
+ tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_X), ref_or_si);
+ tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_Y), bias_or_lod);
+ num_params = 6;
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_LD:
+ assert(num_coords <= 3);
+ tc_MOV(tc, tdst_writemask(tdst_d(m[0]), coords_writemask), coords);
+ tc_MOV(tc, tdst_writemask(tdst_d(m[0]), TOY_WRITEMASK_W), bias_or_lod);
+ if (tc->gen >= ILO_GEN(7)) {
+ num_params = 4;
+ }
+ else {
+ tc_MOV(tc, tdst_writemask(tdst_d(m[1]), TOY_WRITEMASK_X), ref_or_si);
+ num_params = 5;
+ }
+ break;
+ case GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO:
+ tc_MOV(tc, tdst_writemask(tdst_d(m[0]), TOY_WRITEMASK_X), bias_or_lod);
+ num_params = 1;
+ break;
+ default:
+ tc_fail(tc, "unknown sampler opcode");
+ num_params = 0;
+ break;
+ }
+
+ return (num_params + 3) / 4;
+}
+
+/**
+ * Set up message registers and return the message descriptor for sampling.
+ */
+static struct toy_src
+vs_prepare_tgsi_sampling(struct toy_compiler *tc, const struct toy_inst *inst,
+ int base_mrf, unsigned *ret_sampler_index)
+{
+ unsigned simd_mode, msg_type, msg_len, sampler_index, binding_table_index;
+ struct toy_src coords, ddx, ddy, bias_or_lod, ref_or_si;
+ int num_coords, ref_pos, num_derivs;
+ int sampler_src;
+
+ simd_mode = BRW_SAMPLER_SIMD_MODE_SIMD4X2;
+
+ coords = inst->src[0];
+ ddx = tsrc_null();
+ ddy = tsrc_null();
+ bias_or_lod = tsrc_null();
+ ref_or_si = tsrc_null();
+ num_derivs = 0;
+ sampler_src = 1;
+
+ num_coords = toy_tgsi_get_texture_coord_dim(inst->tex.target, &ref_pos);
+
+ /* extract the parameters */
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_TXD:
+ if (ref_pos >= 0)
+ tc_fail(tc, "TXD with shadow sampler not supported");
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS;
+ ddx = inst->src[1];
+ ddy = inst->src[2];
+ num_derivs = num_coords;
+ sampler_src = 3;
+ break;
+ case TOY_OPCODE_TGSI_TXL:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 3);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE;
+ ref_or_si = tsrc_swizzle1(coords, ref_pos);
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD;
+ }
+
+ bias_or_lod = tsrc_swizzle1(coords, TOY_SWIZZLE_W);
+ break;
+ case TOY_OPCODE_TGSI_TXF:
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LD;
+
+ switch (inst->tex.target) {
+ case TGSI_TEXTURE_2D_MSAA:
+ case TGSI_TEXTURE_2D_ARRAY_MSAA:
+ assert(ref_pos >= 0 && ref_pos < 4);
+ /* lod is always 0 */
+ bias_or_lod = tsrc_imm_d(0);
+ ref_or_si = tsrc_swizzle1(coords, ref_pos);
+ break;
+ default:
+ bias_or_lod = tsrc_swizzle1(coords, TOY_SWIZZLE_W);
+ break;
+ }
+
+ /* offset the coordinates */
+ if (!tsrc_is_null(inst->tex.offsets[0])) {
+ struct toy_dst tmp;
+
+ tmp = tc_alloc_tmp(tc);
+ tc_ADD(tc, tmp, coords, inst->tex.offsets[0]);
+ coords = tsrc_from(tmp);
+ }
+
+ sampler_src = 1;
+ break;
+ case TOY_OPCODE_TGSI_TXQ:
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO;
+ num_coords = 0;
+ bias_or_lod = tsrc_swizzle1(coords, TOY_SWIZZLE_X);
+ break;
+ case TOY_OPCODE_TGSI_TXQ_LZ:
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO;
+ num_coords = 0;
+ sampler_src = 0;
+ break;
+ case TOY_OPCODE_TGSI_TXL2:
+ if (ref_pos >= 0) {
+ assert(ref_pos < 4);
+
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE;
+ ref_or_si = tsrc_swizzle1(coords, ref_pos);
+ }
+ else {
+ msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD;
+ }
+
+ bias_or_lod = tsrc_swizzle1(inst->src[1], TOY_SWIZZLE_X);
+ sampler_src = 2;
+ break;
+ default:
+ assert(!"unhandled sampling opcode");
+ return tsrc_null();
+ break;
+ }
+
+ assert(inst->src[sampler_src].file == TOY_FILE_IMM);
+ sampler_index = inst->src[sampler_src].val32;
+ binding_table_index = ILO_VS_TEXTURE_SURFACE(sampler_index);
+
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 1, page 18:
+ *
+ * "Note that the (cube map) coordinates delivered to the sampling
+ * engine must already have been divided by the component with the
+ * largest absolute value."
+ */
+ switch (inst->tex.target) {
+ case TGSI_TEXTURE_CUBE:
+ case TGSI_TEXTURE_SHADOWCUBE:
+ case TGSI_TEXTURE_CUBE_ARRAY:
+ case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
+ /* TXQ does not need coordinates */
+ if (num_coords >= 3) {
+ struct toy_dst tmp, max;
+ struct toy_src abs_coords[3];
+ int i;
+
+ tmp = tc_alloc_tmp(tc);
+ max = tdst_writemask(tmp, TOY_WRITEMASK_W);
+
+ for (i = 0; i < 3; i++)
+ abs_coords[i] = tsrc_absolute(tsrc_swizzle1(coords, i));
+
+ tc_SEL(tc, max, abs_coords[0], abs_coords[0], BRW_CONDITIONAL_GE);
+ tc_SEL(tc, max, tsrc_from(max), abs_coords[0], BRW_CONDITIONAL_GE);
+ tc_INV(tc, max, tsrc_from(max));
+
+ for (i = 0; i < 3; i++)
+ tc_MUL(tc, tdst_writemask(tmp, 1 << i), coords, tsrc_from(max));
+
+ coords = tsrc_from(tmp);
+ }
+ break;
+ }
+
+ /* set up sampler parameters */
+ msg_len = vs_add_sampler_params(tc, msg_type, base_mrf,
+ coords, num_coords, bias_or_lod, ref_or_si, ddx, ddy, num_derivs);
+
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 1, page 136:
+ *
+ * "The maximum message length allowed to the sampler is 11. This would
+ * disallow sample_d, sample_b_c, and sample_l_c with a SIMD Mode of
+ * SIMD16."
+ */
+ if (msg_len > 11)
+ tc_fail(tc, "maximum length for messages to the sampler is 11");
+
+ if (ret_sampler_index)
+ *ret_sampler_index = sampler_index;
+
+ return tsrc_imm_mdesc_sampler(tc, msg_len, 1,
+ false, simd_mode, msg_type, sampler_index, binding_table_index);
+}
+
+static void
+vs_lower_opcode_tgsi_sampling(struct vs_compile_context *vcc,
+ struct toy_inst *inst)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ struct toy_src desc;
+ struct toy_dst dst, tmp;
+ unsigned sampler_index;
+ int swizzles[4], i;
+ unsigned swizzle_zero_mask, swizzle_one_mask, swizzle_normal_mask;
+ bool need_filter;
+
+ desc = vs_prepare_tgsi_sampling(tc, inst,
+ vcc->first_free_mrf, &sampler_index);
+
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_TXF:
+ case TOY_OPCODE_TGSI_TXQ:
+ case TOY_OPCODE_TGSI_TXQ_LZ:
+ need_filter = false;
+ break;
+ default:
+ need_filter = true;
+ break;
+ }
+
+ toy_compiler_lower_to_send(tc, inst, false, BRW_SFID_SAMPLER);
+ inst->src[0] = tsrc(TOY_FILE_MRF, vcc->first_free_mrf, 0);
+ inst->src[1] = desc;
+
+ /* write to a temp first */
+ tmp = tc_alloc_tmp(tc);
+ dst = inst->dst;
+ inst->dst = tmp;
+
+ tc_move_inst(tc, inst);
+
+ if (need_filter) {
+ assert(sampler_index < vcc->variant->num_sampler_views);
+ swizzles[0] = vcc->variant->sampler_view_swizzles[sampler_index].r;
+ swizzles[1] = vcc->variant->sampler_view_swizzles[sampler_index].g;
+ swizzles[2] = vcc->variant->sampler_view_swizzles[sampler_index].b;
+ swizzles[3] = vcc->variant->sampler_view_swizzles[sampler_index].a;
+ }
+ else {
+ swizzles[0] = PIPE_SWIZZLE_RED;
+ swizzles[1] = PIPE_SWIZZLE_GREEN;
+ swizzles[2] = PIPE_SWIZZLE_BLUE;
+ swizzles[3] = PIPE_SWIZZLE_ALPHA;
+ }
+
+ swizzle_zero_mask = 0;
+ swizzle_one_mask = 0;
+ swizzle_normal_mask = 0;
+ for (i = 0; i < 4; i++) {
+ switch (swizzles[i]) {
+ case PIPE_SWIZZLE_ZERO:
+ swizzle_zero_mask |= 1 << i;
+ swizzles[i] = i;
+ break;
+ case PIPE_SWIZZLE_ONE:
+ swizzle_one_mask |= 1 << i;
+ swizzles[i] = i;
+ break;
+ default:
+ swizzle_normal_mask |= 1 << i;
+ break;
+ }
+ }
+
+ /* swizzle the results */
+ if (swizzle_normal_mask) {
+ tc_MOV(tc, tdst_writemask(dst, swizzle_normal_mask),
+ tsrc_swizzle(tsrc_from(tmp), swizzles[0],
+ swizzles[1], swizzles[2], swizzles[3]));
+ }
+ if (swizzle_zero_mask)
+ tc_MOV(tc, tdst_writemask(dst, swizzle_zero_mask), tsrc_imm_f(0.0f));
+ if (swizzle_one_mask)
+ tc_MOV(tc, tdst_writemask(dst, swizzle_one_mask), tsrc_imm_f(1.0f));
+}
+
+static void
+vs_lower_opcode_urb_write(struct toy_compiler *tc, struct toy_inst *inst)
+{
+ /* vs_write_vue() has set up the message registers */
+ toy_compiler_lower_to_send(tc, inst, false, BRW_SFID_URB);
+}
+
+static void
+vs_lower_virtual_opcodes(struct vs_compile_context *vcc)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ struct toy_inst *inst;
+
+ tc_head(tc);
+ while ((inst = tc_next(tc)) != NULL) {
+ switch (inst->opcode) {
+ case TOY_OPCODE_TGSI_IN:
+ case TOY_OPCODE_TGSI_CONST:
+ case TOY_OPCODE_TGSI_SV:
+ case TOY_OPCODE_TGSI_IMM:
+ vs_lower_opcode_tgsi_direct(vcc, inst);
+ break;
+ case TOY_OPCODE_TGSI_INDIRECT_FETCH:
+ case TOY_OPCODE_TGSI_INDIRECT_STORE:
+ vs_lower_opcode_tgsi_indirect(vcc, inst);
+ break;
+ case TOY_OPCODE_TGSI_TEX:
+ case TOY_OPCODE_TGSI_TXB:
+ case TOY_OPCODE_TGSI_TXD:
+ case TOY_OPCODE_TGSI_TXL:
+ case TOY_OPCODE_TGSI_TXP:
+ case TOY_OPCODE_TGSI_TXF:
+ case TOY_OPCODE_TGSI_TXQ:
+ case TOY_OPCODE_TGSI_TXQ_LZ:
+ case TOY_OPCODE_TGSI_TEX2:
+ case TOY_OPCODE_TGSI_TXB2:
+ case TOY_OPCODE_TGSI_TXL2:
+ case TOY_OPCODE_TGSI_SAMPLE:
+ case TOY_OPCODE_TGSI_SAMPLE_I:
+ case TOY_OPCODE_TGSI_SAMPLE_I_MS:
+ case TOY_OPCODE_TGSI_SAMPLE_B:
+ case TOY_OPCODE_TGSI_SAMPLE_C:
+ case TOY_OPCODE_TGSI_SAMPLE_C_LZ:
+ case TOY_OPCODE_TGSI_SAMPLE_D:
+ case TOY_OPCODE_TGSI_SAMPLE_L:
+ case TOY_OPCODE_TGSI_GATHER4:
+ case TOY_OPCODE_TGSI_SVIEWINFO:
+ case TOY_OPCODE_TGSI_SAMPLE_POS:
+ case TOY_OPCODE_TGSI_SAMPLE_INFO:
+ vs_lower_opcode_tgsi_sampling(vcc, inst);
+ break;
+ case TOY_OPCODE_INV:
+ case TOY_OPCODE_LOG:
+ case TOY_OPCODE_EXP:
+ case TOY_OPCODE_SQRT:
+ case TOY_OPCODE_RSQ:
+ case TOY_OPCODE_SIN:
+ case TOY_OPCODE_COS:
+ case TOY_OPCODE_FDIV:
+ case TOY_OPCODE_POW:
+ case TOY_OPCODE_INT_DIV_QUOTIENT:
+ case TOY_OPCODE_INT_DIV_REMAINDER:
+ toy_compiler_lower_math(tc, inst);
+ break;
+ case TOY_OPCODE_URB_WRITE:
+ vs_lower_opcode_urb_write(tc, inst);
+ break;
+ default:
+ if (inst->opcode > 127)
+ tc_fail(tc, "unhandled virtual opcode");
+ break;
+ }
+ }
+}
+
+/**
+ * Compile the shader.
+ */
+static bool
+vs_compile(struct vs_compile_context *vcc)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ struct ilo_shader *sh = vcc->shader;
+
+ vs_lower_virtual_opcodes(vcc);
+ toy_compiler_legalize_for_ra(tc);
+ toy_compiler_optimize(tc);
+ toy_compiler_allocate_registers(tc,
+ vcc->first_free_grf,
+ vcc->last_free_grf,
+ vcc->num_grf_per_vrf);
+ toy_compiler_legalize_for_asm(tc);
+
+ if (tc->fail) {
+ ilo_err("failed to legalize VS instructions: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_VS) {
+ ilo_printf("legalized instructions:\n");
+ toy_compiler_dump(tc);
+ ilo_printf("\n");
+ }
+
+ if (true) {
+ sh->kernel = toy_compiler_assemble(tc, &sh->kernel_size);
+ }
+ else {
+ static const uint32_t microcode[] = {
+ /* fill in the microcode here */
+ 0x0, 0x0, 0x0, 0x0,
+ };
+ const bool swap = true;
+
+ sh->kernel_size = sizeof(microcode);
+ sh->kernel = MALLOC(sh->kernel_size);
+
+ if (sh->kernel) {
+ const int num_dwords = sizeof(microcode) / 4;
+ const uint32_t *src = microcode;
+ uint32_t *dst = (uint32_t *) sh->kernel;
+ int i;
+
+ for (i = 0; i < num_dwords; i += 4) {
+ if (swap) {
+ dst[i + 0] = src[i + 3];
+ dst[i + 1] = src[i + 2];
+ dst[i + 2] = src[i + 1];
+ dst[i + 3] = src[i + 0];
+ }
+ else {
+ memcpy(dst, src, 16);
+ }
+ }
+ }
+ }
+
+ if (!sh->kernel) {
+ ilo_err("failed to compile VS: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_VS) {
+ ilo_printf("disassembly:\n");
+ toy_compiler_disassemble(tc, sh->kernel, sh->kernel_size);
+ ilo_printf("\n");
+ }
+
+ return true;
+}
+
+/**
+ * Collect the toy registers to be written to the VUE.
+ */
+static int
+vs_collect_outputs(struct vs_compile_context *vcc, struct toy_src *outs)
+{
+ const struct toy_tgsi *tgsi = &vcc->tgsi;
+ int i;
+
+ for (i = 0; i < vcc->shader->out.count; i++) {
+ const int slot = vcc->output_map[i];
+ const int vrf = (slot >= 0) ? toy_tgsi_get_vrf(tgsi,
+ TGSI_FILE_OUTPUT, 0, tgsi->outputs[slot].index) : -1;
+ struct toy_src src;
+
+ if (vrf >= 0) {
+ struct toy_dst dst;
+
+ dst = tdst(TOY_FILE_VRF, vrf, 0);
+ src = tsrc_from(dst);
+
+ if (i == 0) {
+ /* PSIZE is at channel W */
+ tc_MOV(&vcc->tc, tdst_writemask(dst, TOY_WRITEMASK_W),
+ tsrc_swizzle1(src, TOY_SWIZZLE_X));
+
+ /* the other channels are for the header */
+ dst = tdst_d(dst);
+ tc_MOV(&vcc->tc, tdst_writemask(dst, TOY_WRITEMASK_XYZ),
+ tsrc_imm_d(0));
+ }
+ else {
+ /* initialize unused channels to 0.0f */
+ if (tgsi->outputs[slot].undefined_mask) {
+ dst = tdst_writemask(dst, tgsi->outputs[slot].undefined_mask);
+ tc_MOV(&vcc->tc, dst, tsrc_imm_f(0.0f));
+ }
+ }
+ }
+ else {
+ /* XXX this is too ugly */
+ if (vcc->shader->out.semantic_names[i] == TGSI_SEMANTIC_CLIPDIST &&
+ slot < 0) {
+ /* ok, we need to compute clip distance */
+ int clipvert_slot = -1, clipvert_vrf, j;
+
+ for (j = 0; j < tgsi->num_outputs; j++) {
+ if (tgsi->outputs[j].semantic_name ==
+ TGSI_SEMANTIC_CLIPVERTEX) {
+ clipvert_slot = j;
+ break;
+ }
+ else if (tgsi->outputs[j].semantic_name ==
+ TGSI_SEMANTIC_POSITION) {
+ /* remember pos, but keep looking */
+ clipvert_slot = j;
+ }
+ }
+
+ clipvert_vrf = (clipvert_slot >= 0) ? toy_tgsi_get_vrf(tgsi,
+ TGSI_FILE_OUTPUT, 0, tgsi->outputs[clipvert_slot].index) : -1;
+ if (clipvert_vrf >= 0) {
+ struct toy_dst tmp = tc_alloc_tmp(&vcc->tc);
+ struct toy_src clipvert = tsrc(TOY_FILE_VRF, clipvert_vrf, 0);
+ int first_ucp, last_ucp;
+
+ if (vcc->shader->out.semantic_indices[i]) {
+ first_ucp = 4;
+ last_ucp = MIN2(7, vcc->variant->u.vs.num_ucps - 1);
+ }
+ else {
+ first_ucp = 0;
+ last_ucp = MIN2(3, vcc->variant->u.vs.num_ucps - 1);
+ }
+
+ for (j = first_ucp; j <= last_ucp; j++) {
+ const int plane_grf = vcc->first_const_grf + j / 2;
+ const int plane_subreg = (j & 1) * 16;
+ const struct toy_src plane = tsrc_rect(tsrc(TOY_FILE_GRF,
+ plane_grf, plane_subreg), TOY_RECT_041);
+ const unsigned writemask = 1 << ((j >= 4) ? j - 4 : j);
+
+ tc_DP4(&vcc->tc, tdst_writemask(tmp, writemask),
+ clipvert, plane);
+ }
+
+ src = tsrc_from(tmp);
+ }
+ else {
+ src = tsrc_imm_f(0.0f);
+ }
+ }
+ else {
+ src = (i == 0) ? tsrc_imm_d(0) : tsrc_imm_f(0.0f);
+ }
+ }
+
+ outs[i] = src;
+ }
+
+ return i;
+}
+
+/**
+ * Emit instructions to write the VUE.
+ */
+static void
+vs_write_vue(struct vs_compile_context *vcc)
+{
+ struct toy_compiler *tc = &vcc->tc;
+ struct toy_src outs[PIPE_MAX_SHADER_OUTPUTS];
+ struct toy_dst header;
+ struct toy_src r0;
+ struct toy_inst *inst;
+ int sent_attrs, total_attrs;
+
+ header = tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf, 0));
+ r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));
+ inst = tc_MOV(tc, header, r0);
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+
+ if (tc->gen >= ILO_GEN(7)) {
+ inst = tc_OR(tc, tdst_offset(header, 0, 5),
+ tsrc_rect(tsrc_offset(r0, 0, 5), TOY_RECT_010),
+ tsrc_rect(tsrc_imm_ud(0xff00), TOY_RECT_010));
+ inst->exec_size = BRW_EXECUTE_1;
+ inst->access_mode = BRW_ALIGN_1;
+ inst->mask_ctrl = BRW_MASK_DISABLE;
+ }
+
+ total_attrs = vs_collect_outputs(vcc, outs);
+ sent_attrs = 0;
+ while (sent_attrs < total_attrs) {
+ struct toy_src desc;
+ int mrf = vcc->first_free_mrf + 1, avail_mrf_for_attrs;
+ int num_attrs, msg_len, i;
+ bool eot;
+
+ num_attrs = total_attrs - sent_attrs;
+ eot = true;
+
+ /* see if we need another message */
+ avail_mrf_for_attrs = vcc->last_free_mrf - mrf + 1;
+ if (num_attrs > avail_mrf_for_attrs) {
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 2, page 22:
+ *
+ * "Offset. This field specifies a destination offset (in 256-bit
+ * units) from the start of the URB entry(s), as referenced by
+ * URB Return Handle n, at which the data (if any) will be
+ * written."
+ *
+ * As we need to offset the following messages, we must make sure
+ * this one writes an even number of attributes.
+ */
+ num_attrs = avail_mrf_for_attrs & ~1;
+ eot = false;
+ }
+
+ if (tc->gen >= ILO_GEN(7)) {
+ /* do not forget about the header */
+ msg_len = 1 + num_attrs;
+ }
+ else {
+ /*
+ * From the Sandy Bridge PRM, volume 4 part 2, page 26:
+ *
+ * "At least 256 bits per vertex (512 bits total, M1 & M2) must
+ * be written. Writing only 128 bits per vertex (256 bits
+ * total, M1 only) results in UNDEFINED operation."
+ *
+ * "[DevSNB] Interleave writes must be in multiples of 256 per
+ * vertex."
+ *
+ * That is, we must write or appear to write an even number of
+ * attributes, starting from two.
+ */
+ if (num_attrs % 2 && num_attrs == avail_mrf_for_attrs) {
+ num_attrs--;
+ eot = false;
+ }
+
+ msg_len = 1 + align(num_attrs, 2);
+ }
+
+ for (i = 0; i < num_attrs; i++)
+ tc_MOV(tc, tdst(TOY_FILE_MRF, mrf++, 0), outs[sent_attrs + i]);
+
+ assert(sent_attrs % 2 == 0);
+ desc = tsrc_imm_mdesc_urb(tc, eot, msg_len, 0,
+ eot, true, false, BRW_URB_SWIZZLE_INTERLEAVE, sent_attrs / 2, 0);
+
+ tc_add2(tc, TOY_OPCODE_URB_WRITE, tdst_null(), tsrc_from(header), desc);
+
+ sent_attrs += num_attrs;
+ }
+}
+
+/**
+ * Set up shader inputs for fixed-function units.
+ */
+static void
+vs_setup_shader_in(struct ilo_shader *sh, const struct toy_tgsi *tgsi)
+{
+ int num_attrs, i;
+
+ /* vertex/instance id is the first VE if exists */
+ for (i = 0; i < tgsi->num_system_values; i++) {
+ bool found = false;
+
+ switch (tgsi->system_values[i].semantic_name) {
+ case TGSI_SEMANTIC_INSTANCEID:
+ case TGSI_SEMANTIC_VERTEXID:
+ found = true;
+ break;
+ default:
+ break;
+ }
+
+ if (found) {
+ sh->in.semantic_names[sh->in.count] =
+ tgsi->system_values[i].semantic_name;
+ sh->in.semantic_indices[sh->in.count] =
+ tgsi->system_values[i].semantic_index;
+ sh->in.interp[sh->in.count] = TGSI_INTERPOLATE_CONSTANT;
+ sh->in.centroid[sh->in.count] = false;
+
+ sh->in.count++;
+ break;
+ }
+ }
+
+ num_attrs = 0;
+ for (i = 0; i < tgsi->num_inputs; i++) {
+ assert(tgsi->inputs[i].semantic_name == TGSI_SEMANTIC_GENERIC);
+ if (tgsi->inputs[i].semantic_index >= num_attrs)
+ num_attrs = tgsi->inputs[i].semantic_index + 1;
+ }
+ assert(num_attrs <= PIPE_MAX_ATTRIBS);
+
+ /* VF cannot remap VEs. VE[i] must be used as GENERIC[i]. */
+ for (i = 0; i < num_attrs; i++) {
+ sh->in.semantic_names[sh->in.count + i] = TGSI_SEMANTIC_GENERIC;
+ sh->in.semantic_indices[sh->in.count + i] = i;
+ sh->in.interp[sh->in.count + i] = TGSI_INTERPOLATE_CONSTANT;
+ sh->in.centroid[sh->in.count + i] = false;
+ }
+
+ sh->in.count += num_attrs;
+
+ sh->in.has_pos = false;
+ sh->in.has_linear_interp = false;
+ sh->in.barycentric_interpolation_mode = 0;
+}
+
+/**
+ * Set up shader outputs for fixed-function units.
+ */
+static void
+vs_setup_shader_out(struct ilo_shader *sh, const struct toy_tgsi *tgsi,
+ bool output_clipdist, int *output_map)
+{
+ int psize_slot = -1, pos_slot = -1;
+ int clipdist_slot[2] = { -1, -1 };
+ int color_slot[4] = { -1, -1, -1, -1 };
+ int num_outs, i;
+
+ /* find out the slots of outputs that need special care */
+ for (i = 0; i < tgsi->num_outputs; i++) {
+ switch (tgsi->outputs[i].semantic_name) {
+ case TGSI_SEMANTIC_PSIZE:
+ psize_slot = i;
+ break;
+ case TGSI_SEMANTIC_POSITION:
+ pos_slot = i;
+ break;
+ case TGSI_SEMANTIC_CLIPDIST:
+ if (tgsi->outputs[i].semantic_index)
+ clipdist_slot[1] = i;
+ else
+ clipdist_slot[0] = i;
+ break;
+ case TGSI_SEMANTIC_COLOR:
+ if (tgsi->outputs[i].semantic_index)
+ color_slot[2] = i;
+ else
+ color_slot[0] = i;
+ break;
+ case TGSI_SEMANTIC_BCOLOR:
+ if (tgsi->outputs[i].semantic_index)
+ color_slot[3] = i;
+ else
+ color_slot[1] = i;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* the first two VUEs are always PSIZE and POSITION */
+ num_outs = 2;
+ sh->out.semantic_names[0] = TGSI_SEMANTIC_PSIZE;
+ sh->out.semantic_indices[0] = 0;
+ sh->out.semantic_names[1] = TGSI_SEMANTIC_POSITION;
+ sh->out.semantic_indices[1] = 0;
+
+ sh->out.has_pos = true;
+ output_map[0] = psize_slot;
+ output_map[1] = pos_slot;
+
+ /* followed by optional clip distances */
+ if (output_clipdist) {
+ sh->out.semantic_names[num_outs] = TGSI_SEMANTIC_CLIPDIST;
+ sh->out.semantic_indices[num_outs] = 0;
+ output_map[num_outs++] = clipdist_slot[0];
+
+ sh->out.semantic_names[num_outs] = TGSI_SEMANTIC_CLIPDIST;
+ sh->out.semantic_indices[num_outs] = 1;
+ output_map[num_outs++] = clipdist_slot[1];
+ }
+
+ /*
+ * make BCOLOR follow COLOR so that we can make use of
+ * ATTRIBUTE_SWIZZLE_INPUTATTR_FACING in 3DSTATE_SF
+ */
+ for (i = 0; i < 4; i++) {
+ const int slot = color_slot[i];
+
+ if (slot < 0)
+ continue;
+
+ sh->out.semantic_names[num_outs] = tgsi->outputs[slot].semantic_name;
+ sh->out.semantic_indices[num_outs] = tgsi->outputs[slot].semantic_index;
+
+ output_map[num_outs++] = slot;
+ }
+
+ /* add the rest of the outputs */
+ for (i = 0; i < tgsi->num_outputs; i++) {
+ switch (tgsi->outputs[i].semantic_name) {
+ case TGSI_SEMANTIC_PSIZE:
+ case TGSI_SEMANTIC_POSITION:
+ case TGSI_SEMANTIC_CLIPDIST:
+ case TGSI_SEMANTIC_COLOR:
+ case TGSI_SEMANTIC_BCOLOR:
+ break;
+ default:
+ sh->out.semantic_names[num_outs] = tgsi->outputs[i].semantic_name;
+ sh->out.semantic_indices[num_outs] = tgsi->outputs[i].semantic_index;
+ output_map[num_outs++] = i;
+ break;
+ }
+ }
+
+ sh->out.count = num_outs;
+}
+
+/**
+ * Translate the TGSI tokens.
+ */
+static bool
+vs_setup_tgsi(struct toy_compiler *tc, const struct tgsi_token *tokens,
+ struct toy_tgsi *tgsi)
+{
+ if (ilo_debug & ILO_DEBUG_VS) {
+ ilo_printf("dumping vertex shader\n");
+ ilo_printf("\n");
+
+ tgsi_dump(tokens, 0);
+ ilo_printf("\n");
+ }
+
+ toy_compiler_translate_tgsi(tc, tokens, true, tgsi);
+ if (tc->fail) {
+ ilo_err("failed to translate VS TGSI tokens: %s\n", tc->reason);
+ return false;
+ }
+
+ if (ilo_debug & ILO_DEBUG_VS) {
+ ilo_printf("TGSI translator:\n");
+ toy_tgsi_dump(tgsi);
+ ilo_printf("\n");
+ toy_compiler_dump(tc);
+ ilo_printf("\n");
+ }
+
+ return true;
+}
+
+/**
+ * Set up VS compile context. This includes translating the TGSI tokens.
+ */
+static bool
+vs_setup(struct vs_compile_context *vcc,
+ const struct ilo_shader_state *state,
+ const struct ilo_shader_variant *variant)
+{
+ int num_consts;
+
+ memset(vcc, 0, sizeof(*vcc));
+
+ vcc->shader = CALLOC_STRUCT(ilo_shader);
+ if (!vcc->shader)
+ return false;
+
+ vcc->variant = variant;
+
+ toy_compiler_init(&vcc->tc, state->info.gen);
+ vcc->tc.templ.access_mode = BRW_ALIGN_16;
+ vcc->tc.templ.exec_size = BRW_EXECUTE_8;
+ vcc->tc.rect_linear_width = 4;
+
+ /*
+ * The classic driver uses the sampler cache (gen6) or the data cache
+ * (gen7). Why?
+ */
+ vcc->const_cache = GEN6_SFID_DATAPORT_CONSTANT_CACHE;
+
+ if (!vs_setup_tgsi(&vcc->tc, state->info.tokens, &vcc->tgsi)) {
+ toy_compiler_cleanup(&vcc->tc);
+ FREE(vcc->shader);
+ return false;
+ }
+
+ vs_setup_shader_in(vcc->shader, &vcc->tgsi);
+ vs_setup_shader_out(vcc->shader, &vcc->tgsi,
+ (vcc->variant->u.vs.num_ucps > 0), vcc->output_map);
+
+ /* fit each pair of user clip planes into a register */
+ num_consts = (vcc->variant->u.vs.num_ucps + 1) / 2;
+
+ /* r0 is reserved for payload header */
+ vcc->first_const_grf = 1;
+ vcc->first_vue_grf = vcc->first_const_grf + num_consts;
+ vcc->first_free_grf = vcc->first_vue_grf + vcc->shader->in.count;
+ vcc->last_free_grf = 127;
+
+ /* m0 is reserved for system routines */
+ vcc->first_free_mrf = 1;
+ vcc->last_free_mrf = 15;
+
+ vcc->num_grf_per_vrf = 1;
+
+ if (vcc->tc.gen >= ILO_GEN(7)) {
+ vcc->last_free_grf -= 15;
+ vcc->first_free_mrf = vcc->last_free_grf + 1;
+ vcc->last_free_mrf = vcc->first_free_mrf + 14;
+ }
+
+ vcc->shader->in.start_grf = vcc->first_const_grf;
+ vcc->shader->pcb.clip_state_size =
+ vcc->variant->u.vs.num_ucps * (sizeof(float) * 4);
+
+ return true;
+}
+
+/**
+ * Compile the vertex shader.
+ */
+struct ilo_shader *
+ilo_shader_compile_vs(const struct ilo_shader_state *state,
+ const struct ilo_shader_variant *variant)
+{
+ struct vs_compile_context vcc;
+ bool need_gs;
+
+ if (!vs_setup(&vcc, state, variant))
+ return NULL;
+
+ if (vcc.tc.gen >= ILO_GEN(7)) {
+ need_gs = false;
+ }
+ else {
+ need_gs = variant->u.vs.rasterizer_discard ||
+ state->info.stream_output.num_outputs;
+ }
+
+ vs_write_vue(&vcc);
+
+ if (!vs_compile(&vcc)) {
+ FREE(vcc.shader);
+ vcc.shader = NULL;
+ }
+
+ toy_tgsi_cleanup(&vcc.tgsi);
+ toy_compiler_cleanup(&vcc.tc);
+
+ if (need_gs) {
+ int so_mapping[PIPE_MAX_SHADER_OUTPUTS];
+ int i, j;
+
+ for (i = 0; i < vcc.tgsi.num_outputs; i++) {
+ int attr = 0;
+
+ for (j = 0; j < vcc.shader->out.count; j++) {
+ if (vcc.tgsi.outputs[i].semantic_name ==
+ vcc.shader->out.semantic_names[j] &&
+ vcc.tgsi.outputs[i].semantic_index ==
+ vcc.shader->out.semantic_indices[j]) {
+ attr = j;
+ break;
+ }
+ }
+
+ so_mapping[i] = attr;
+ }
+
+ if (!ilo_shader_compile_gs_passthrough(state, variant,
+ so_mapping, vcc.shader)) {
+ ilo_shader_destroy(vcc.shader);
+ vcc.shader = NULL;
+ }
+ }
+
+ return vcc.shader;
+}