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Diffstat (limited to 'src/gallium/drivers/i965/brw_clip_unfilled.c')
-rw-r--r--src/gallium/drivers/i965/brw_clip_unfilled.c497
1 files changed, 0 insertions, 497 deletions
diff --git a/src/gallium/drivers/i965/brw_clip_unfilled.c b/src/gallium/drivers/i965/brw_clip_unfilled.c
deleted file mode 100644
index aec835b8cec..00000000000
--- a/src/gallium/drivers/i965/brw_clip_unfilled.c
+++ /dev/null
@@ -1,497 +0,0 @@
-/*
- Copyright (C) Intel Corp. 2006. All Rights Reserved.
- Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
- develop this 3D driver.
-
- 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 (including the
- next paragraph) 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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:
- * Keith Whitwell <keith@tungstengraphics.com>
- */
-
-#include "brw_defines.h"
-#include "brw_eu.h"
-#include "brw_util.h"
-#include "brw_clip.h"
-
-
-
-/* This is performed against the original triangles, so no indirection
- * required:
-BZZZT!
- */
-static void compute_tri_direction( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_reg e = c->reg.tmp0;
- struct brw_reg f = c->reg.tmp1;
- struct brw_reg v0 = byte_offset(c->reg.vertex[0], c->offset_hpos);
- struct brw_reg v1 = byte_offset(c->reg.vertex[1], c->offset_hpos);
- struct brw_reg v2 = byte_offset(c->reg.vertex[2], c->offset_hpos);
-
-
- struct brw_reg v0n = get_tmp(c);
- struct brw_reg v1n = get_tmp(c);
- struct brw_reg v2n = get_tmp(c);
-
- /* Convert to NDC.
- * NOTE: We can't modify the original vertex coordinates,
- * as it may impact further operations.
- * So, we have to keep normalized coordinates in temp registers.
- *
- * TBD-KC
- * Try to optimize unnecessary MOV's.
- */
- brw_MOV(p, v0n, v0);
- brw_MOV(p, v1n, v1);
- brw_MOV(p, v2n, v2);
-
- brw_clip_project_position(c, v0n);
- brw_clip_project_position(c, v1n);
- brw_clip_project_position(c, v2n);
-
- /* Calculate the vectors of two edges of the triangle:
- */
- brw_ADD(p, e, v0n, negate(v2n));
- brw_ADD(p, f, v1n, negate(v2n));
-
- /* Take their crossproduct:
- */
- brw_set_access_mode(p, BRW_ALIGN_16);
- brw_MUL(p, vec4(brw_null_reg()), brw_swizzle(e, 1,2,0,3), brw_swizzle(f,2,0,1,3));
- brw_MAC(p, vec4(e), negate(brw_swizzle(e, 2,0,1,3)), brw_swizzle(f,1,2,0,3));
- brw_set_access_mode(p, BRW_ALIGN_1);
-
- brw_MUL(p, c->reg.dir, c->reg.dir, vec4(e));
-}
-
-
-static void cull_direction( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *ccw;
- GLuint conditional;
-
- assert (!(c->key.fill_ccw == CLIP_CULL &&
- c->key.fill_cw == CLIP_CULL));
-
- if (c->key.fill_ccw == CLIP_CULL)
- conditional = BRW_CONDITIONAL_GE;
- else
- conditional = BRW_CONDITIONAL_L;
-
- brw_CMP(p,
- vec1(brw_null_reg()),
- conditional,
- get_element(c->reg.dir, 2),
- brw_imm_f(0));
-
- ccw = brw_IF(p, BRW_EXECUTE_1);
- {
- brw_clip_kill_thread(c);
- }
- brw_ENDIF(p, ccw);
-}
-
-
-
-static void copy_bfc( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *ccw;
- GLuint conditional;
-
- /* Do we have any colors to copy?
- */
- if ((c->offset_color0 == 0 || c->offset_bfc0 == 0) &&
- (c->offset_color1 == 0 || c->offset_bfc1 == 0))
- return;
-
- /* In some wierd degnerate cases we can end up testing the
- * direction twice, once for culling and once for bfc copying. Oh
- * well, that's what you get for setting wierd GL state.
- */
- if (c->key.copy_bfc_ccw)
- conditional = BRW_CONDITIONAL_GE;
- else
- conditional = BRW_CONDITIONAL_L;
-
- brw_CMP(p,
- vec1(brw_null_reg()),
- conditional,
- get_element(c->reg.dir, 2),
- brw_imm_f(0));
-
- ccw = brw_IF(p, BRW_EXECUTE_1);
- {
- GLuint i;
-
- for (i = 0; i < 3; i++) {
- if (c->offset_color0 && c->offset_bfc0)
- brw_MOV(p,
- byte_offset(c->reg.vertex[i], c->offset_color0),
- byte_offset(c->reg.vertex[i], c->offset_bfc0));
-
- if (c->offset_color1 && c->offset_bfc1)
- brw_MOV(p,
- byte_offset(c->reg.vertex[i], c->offset_color0),
- byte_offset(c->reg.vertex[i], c->offset_bfc0));
- }
- }
- brw_ENDIF(p, ccw);
-}
-
-
-
-
-/*
- GLfloat iz = 1.0 / dir.z;
- GLfloat ac = dir.x * iz;
- GLfloat bc = dir.y * iz;
- offset = ctx->Polygon.OffsetUnits * DEPTH_SCALE;
- offset += MAX2( abs(ac), abs(bc) ) * ctx->Polygon.OffsetFactor;
- offset *= MRD;
-*/
-static void compute_offset( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_reg off = c->reg.offset;
- struct brw_reg dir = c->reg.dir;
-
- brw_math_invert(p, get_element(off, 2), get_element(dir, 2));
- brw_MUL(p, vec2(off), dir, get_element(off, 2));
-
- brw_CMP(p,
- vec1(brw_null_reg()),
- BRW_CONDITIONAL_GE,
- brw_abs(get_element(off, 0)),
- brw_abs(get_element(off, 1)));
-
- brw_SEL(p, vec1(off), brw_abs(get_element(off, 0)), brw_abs(get_element(off, 1)));
- brw_set_predicate_control(p, BRW_PREDICATE_NONE);
-
- brw_MUL(p, vec1(off), off, brw_imm_f(c->key.offset_factor));
- brw_ADD(p, vec1(off), off, brw_imm_f(c->key.offset_units));
-}
-
-
-static void merge_edgeflags( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *is_poly;
- struct brw_reg tmp0 = get_element_ud(c->reg.tmp0, 0);
-
- brw_AND(p, tmp0, get_element_ud(c->reg.R0, 2), brw_imm_ud(PRIM_MASK));
- brw_CMP(p,
- vec1(brw_null_reg()),
- BRW_CONDITIONAL_EQ,
- tmp0,
- brw_imm_ud(_3DPRIM_POLYGON));
-
- /* Get away with using reg.vertex because we know that this is not
- * a _3DPRIM_TRISTRIP_REVERSE:
- */
- is_poly = brw_IF(p, BRW_EXECUTE_1);
- {
- brw_set_conditionalmod(p, BRW_CONDITIONAL_EQ);
- brw_AND(p, vec1(brw_null_reg()), get_element_ud(c->reg.R0, 2), brw_imm_ud(1<<8));
- brw_MOV(p, byte_offset(c->reg.vertex[0], c->offset_edgeflag), brw_imm_f(0));
- brw_set_predicate_control(p, BRW_PREDICATE_NONE);
-
- brw_set_conditionalmod(p, BRW_CONDITIONAL_EQ);
- brw_AND(p, vec1(brw_null_reg()), get_element_ud(c->reg.R0, 2), brw_imm_ud(1<<9));
- brw_MOV(p, byte_offset(c->reg.vertex[2], c->offset_edgeflag), brw_imm_f(0));
- brw_set_predicate_control(p, BRW_PREDICATE_NONE);
- }
- brw_ENDIF(p, is_poly);
-}
-
-
-
-static void apply_one_offset( struct brw_clip_compile *c,
- struct brw_indirect vert )
-{
- struct brw_compile *p = &c->func;
- struct brw_reg z = deref_1f(vert, c->header_position_offset +
- 2 * type_sz(BRW_REGISTER_TYPE_F));
-
- brw_ADD(p, z, z, vec1(c->reg.offset));
-}
-
-
-
-/***********************************************************************
- * Output clipped polygon as an unfilled primitive:
- */
-static void emit_lines(struct brw_clip_compile *c,
- GLboolean do_offset)
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *loop;
- struct brw_instruction *draw_edge;
- struct brw_indirect v0 = brw_indirect(0, 0);
- struct brw_indirect v1 = brw_indirect(1, 0);
- struct brw_indirect v0ptr = brw_indirect(2, 0);
- struct brw_indirect v1ptr = brw_indirect(3, 0);
-
- /* Need a seperate loop for offset:
- */
- if (do_offset) {
- brw_MOV(p, c->reg.loopcount, c->reg.nr_verts);
- brw_MOV(p, get_addr_reg(v0ptr), brw_address(c->reg.inlist));
-
- loop = brw_DO(p, BRW_EXECUTE_1);
- {
- brw_MOV(p, get_addr_reg(v0), deref_1uw(v0ptr, 0));
- brw_ADD(p, get_addr_reg(v0ptr), get_addr_reg(v0ptr), brw_imm_uw(2));
-
- apply_one_offset(c, v0);
-
- brw_set_conditionalmod(p, BRW_CONDITIONAL_G);
- brw_ADD(p, c->reg.loopcount, c->reg.loopcount, brw_imm_d(-1));
- }
- brw_WHILE(p, loop);
- }
-
- /* v1ptr = &inlist[nr_verts]
- * *v1ptr = v0
- */
- brw_MOV(p, c->reg.loopcount, c->reg.nr_verts);
- brw_MOV(p, get_addr_reg(v0ptr), brw_address(c->reg.inlist));
- brw_ADD(p, get_addr_reg(v1ptr), get_addr_reg(v0ptr), retype(c->reg.nr_verts, BRW_REGISTER_TYPE_UW));
- brw_ADD(p, get_addr_reg(v1ptr), get_addr_reg(v1ptr), retype(c->reg.nr_verts, BRW_REGISTER_TYPE_UW));
- brw_MOV(p, deref_1uw(v1ptr, 0), deref_1uw(v0ptr, 0));
-
- loop = brw_DO(p, BRW_EXECUTE_1);
- {
- brw_MOV(p, get_addr_reg(v0), deref_1uw(v0ptr, 0));
- brw_MOV(p, get_addr_reg(v1), deref_1uw(v0ptr, 2));
- brw_ADD(p, get_addr_reg(v0ptr), get_addr_reg(v0ptr), brw_imm_uw(2));
-
- /* draw edge if edgeflag != 0 */
- brw_CMP(p,
- vec1(brw_null_reg()), BRW_CONDITIONAL_NZ,
- deref_1f(v0, c->offset_edgeflag),
- brw_imm_f(0));
- draw_edge = brw_IF(p, BRW_EXECUTE_1);
- {
- brw_clip_emit_vue(c, v0, 1, 0, (_3DPRIM_LINESTRIP << 2) | R02_PRIM_START);
- brw_clip_emit_vue(c, v1, 1, 0, (_3DPRIM_LINESTRIP << 2) | R02_PRIM_END);
- }
- brw_ENDIF(p, draw_edge);
-
- brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ);
- brw_ADD(p, c->reg.loopcount, c->reg.loopcount, brw_imm_d(-1));
- }
- brw_WHILE(p, loop);
-}
-
-
-
-static void emit_points(struct brw_clip_compile *c,
- GLboolean do_offset )
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *loop;
- struct brw_instruction *draw_point;
-
- struct brw_indirect v0 = brw_indirect(0, 0);
- struct brw_indirect v0ptr = brw_indirect(2, 0);
-
- brw_MOV(p, c->reg.loopcount, c->reg.nr_verts);
- brw_MOV(p, get_addr_reg(v0ptr), brw_address(c->reg.inlist));
-
- loop = brw_DO(p, BRW_EXECUTE_1);
- {
- brw_MOV(p, get_addr_reg(v0), deref_1uw(v0ptr, 0));
- brw_ADD(p, get_addr_reg(v0ptr), get_addr_reg(v0ptr), brw_imm_uw(2));
-
- /* draw if edgeflag != 0
- */
- brw_CMP(p,
- vec1(brw_null_reg()), BRW_CONDITIONAL_NZ,
- deref_1f(v0, c->offset_edgeflag),
- brw_imm_f(0));
- draw_point = brw_IF(p, BRW_EXECUTE_1);
- {
- if (do_offset)
- apply_one_offset(c, v0);
-
- brw_clip_emit_vue(c, v0, 1, 0, (_3DPRIM_POINTLIST << 2) | R02_PRIM_START | R02_PRIM_END);
- }
- brw_ENDIF(p, draw_point);
-
- brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ);
- brw_ADD(p, c->reg.loopcount, c->reg.loopcount, brw_imm_d(-1));
- }
- brw_WHILE(p, loop);
-}
-
-
-
-
-
-
-
-static void emit_primitives( struct brw_clip_compile *c,
- GLuint mode,
- GLboolean do_offset )
-{
- switch (mode) {
- case CLIP_FILL:
- brw_clip_tri_emit_polygon(c);
- break;
-
- case CLIP_LINE:
- emit_lines(c, do_offset);
- break;
-
- case CLIP_POINT:
- emit_points(c, do_offset);
- break;
-
- case CLIP_CULL:
- assert(0);
- break;
- }
-}
-
-
-
-static void emit_unfilled_primitives( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *ccw;
-
- /* Direction culling has already been done.
- */
- if (c->key.fill_ccw != c->key.fill_cw &&
- c->key.fill_ccw != CLIP_CULL &&
- c->key.fill_cw != CLIP_CULL)
- {
- brw_CMP(p,
- vec1(brw_null_reg()),
- BRW_CONDITIONAL_GE,
- get_element(c->reg.dir, 2),
- brw_imm_f(0));
-
- ccw = brw_IF(p, BRW_EXECUTE_1);
- {
- emit_primitives(c, c->key.fill_ccw, c->key.offset_ccw);
- }
- ccw = brw_ELSE(p, ccw);
- {
- emit_primitives(c, c->key.fill_cw, c->key.offset_cw);
- }
- brw_ENDIF(p, ccw);
- }
- else if (c->key.fill_cw != CLIP_CULL) {
- emit_primitives(c, c->key.fill_cw, c->key.offset_cw);
- }
- else if (c->key.fill_ccw != CLIP_CULL) {
- emit_primitives(c, c->key.fill_ccw, c->key.offset_ccw);
- }
-}
-
-
-
-
-static void check_nr_verts( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *if_insn;
-
- brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_L, c->reg.nr_verts, brw_imm_d(3));
- if_insn = brw_IF(p, BRW_EXECUTE_1);
- {
- brw_clip_kill_thread(c);
- }
- brw_ENDIF(p, if_insn);
-}
-
-
-void brw_emit_unfilled_clip( struct brw_clip_compile *c )
-{
- struct brw_compile *p = &c->func;
- struct brw_instruction *do_clip;
-
-
- c->need_direction = ((c->key.offset_ccw || c->key.offset_cw) ||
- (c->key.fill_ccw != c->key.fill_cw) ||
- c->key.fill_ccw == CLIP_CULL ||
- c->key.fill_cw == CLIP_CULL ||
- c->key.copy_bfc_cw ||
- c->key.copy_bfc_ccw);
-
- brw_clip_tri_alloc_regs(c, 3 + c->key.nr_userclip + 6);
- brw_clip_tri_init_vertices(c);
- brw_clip_init_ff_sync(c);
-
- assert(c->offset_edgeflag);
-
- if (c->key.fill_ccw == CLIP_CULL &&
- c->key.fill_cw == CLIP_CULL) {
- brw_clip_kill_thread(c);
- return;
- }
-
- merge_edgeflags(c);
-
- /* Need to use the inlist indirection here:
- */
- if (c->need_direction)
- compute_tri_direction(c);
-
- if (c->key.fill_ccw == CLIP_CULL ||
- c->key.fill_cw == CLIP_CULL)
- cull_direction(c);
-
- if (c->key.offset_ccw ||
- c->key.offset_cw)
- compute_offset(c);
-
- if (c->key.copy_bfc_ccw ||
- c->key.copy_bfc_cw)
- copy_bfc(c);
-
- /* Need to do this whether we clip or not:
- */
- if (c->key.do_flat_shading)
- brw_clip_tri_flat_shade(c);
-
- brw_clip_init_clipmask(c);
- brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_NZ, c->reg.planemask, brw_imm_ud(0));
- do_clip = brw_IF(p, BRW_EXECUTE_1);
- {
- brw_clip_init_planes(c);
- brw_clip_tri(c);
- check_nr_verts(c);
- }
- brw_ENDIF(p, do_clip);
-
- emit_unfilled_primitives(c);
- brw_clip_kill_thread(c);
-}
-
-
-
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