summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/i965/brw_wm_pass1.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/i965/brw_wm_pass1.c')
-rw-r--r--src/gallium/drivers/i965/brw_wm_pass1.c292
1 files changed, 0 insertions, 292 deletions
diff --git a/src/gallium/drivers/i965/brw_wm_pass1.c b/src/gallium/drivers/i965/brw_wm_pass1.c
deleted file mode 100644
index 005747f00ba..00000000000
--- a/src/gallium/drivers/i965/brw_wm_pass1.c
+++ /dev/null
@@ -1,292 +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_wm.h"
-#include "brw_debug.h"
-
-
-static GLuint get_tracked_mask(struct brw_wm_compile *c,
- struct brw_wm_instruction *inst)
-{
- GLuint i;
- for (i = 0; i < 4; i++) {
- if (inst->writemask & (1<<i)) {
- if (!inst->dst[i]->contributes_to_output) {
- inst->writemask &= ~(1<<i);
- inst->dst[i] = 0;
- }
- }
- }
-
- return inst->writemask;
-}
-
-/* Remove a reference from a value's usage chain.
- */
-static void unlink_ref(struct brw_wm_ref *ref)
-{
- struct brw_wm_value *value = ref->value;
-
- if (ref == value->lastuse) {
- value->lastuse = ref->prevuse;
- }
- else {
- struct brw_wm_ref *i = value->lastuse;
- while (i->prevuse != ref) i = i->prevuse;
- i->prevuse = ref->prevuse;
- }
-}
-
-static void track_arg(struct brw_wm_compile *c,
- struct brw_wm_instruction *inst,
- GLuint arg,
- GLuint readmask)
-{
- GLuint i;
-
- for (i = 0; i < 4; i++) {
- struct brw_wm_ref *ref = inst->src[arg][i];
- if (ref) {
- if (readmask & (1<<i)) {
- ref->value->contributes_to_output = 1;
- }
- else {
- unlink_ref(ref);
- inst->src[arg][i] = NULL;
- }
- }
- }
-}
-
-static GLuint get_texcoord_mask( GLuint tex_idx )
-{
- switch (tex_idx) {
- case TGSI_TEXTURE_1D:
- return BRW_WRITEMASK_X;
- case TGSI_TEXTURE_2D:
- case TGSI_TEXTURE_RECT:
- return BRW_WRITEMASK_XY;
- case TGSI_TEXTURE_3D:
- return BRW_WRITEMASK_XYZ;
- case TGSI_TEXTURE_CUBE:
- return BRW_WRITEMASK_XYZ;
-
- case TGSI_TEXTURE_SHADOW1D:
- return BRW_WRITEMASK_XZ;
- case TGSI_TEXTURE_SHADOW2D:
- case TGSI_TEXTURE_SHADOWRECT:
- return BRW_WRITEMASK_XYZ;
- default:
- assert(0);
- return 0;
- }
-}
-
-
-/* Step two: Basically this is dead code elimination.
- *
- * Iterate backwards over instructions, noting which values
- * contribute to the final result. Adjust writemasks to only
- * calculate these values.
- */
-void brw_wm_pass1( struct brw_wm_compile *c )
-{
- GLint insn;
-
- for (insn = c->nr_insns-1; insn >= 0; insn--) {
- struct brw_wm_instruction *inst = &c->instruction[insn];
- GLuint writemask;
- GLuint read0, read1, read2;
-
- if (inst->opcode == TGSI_OPCODE_KIL) {
- track_arg(c, inst, 0, BRW_WRITEMASK_XYZW); /* All args contribute to final */
- continue;
- }
-
- if (inst->opcode == WM_FB_WRITE) {
- track_arg(c, inst, 0, BRW_WRITEMASK_XYZW);
- track_arg(c, inst, 1, BRW_WRITEMASK_XYZW);
- if (c->key.source_depth_to_render_target &&
- c->key.computes_depth)
- track_arg(c, inst, 2, BRW_WRITEMASK_Z);
- else
- track_arg(c, inst, 2, 0);
- continue;
- }
-
- /* Lookup all the registers which were written by this
- * instruction and get a mask of those that contribute to the output:
- */
- writemask = get_tracked_mask(c, inst);
- if (!writemask) {
- GLuint arg;
- for (arg = 0; arg < 3; arg++)
- track_arg(c, inst, arg, 0);
- continue;
- }
-
- read0 = 0;
- read1 = 0;
- read2 = 0;
-
- /* Mark all inputs which contribute to the marked outputs:
- */
- switch (inst->opcode) {
- case TGSI_OPCODE_ABS:
- case TGSI_OPCODE_FLR:
- case TGSI_OPCODE_FRC:
- case TGSI_OPCODE_MOV:
- case TGSI_OPCODE_TRUNC:
- read0 = writemask;
- break;
-
- case TGSI_OPCODE_SUB:
- case TGSI_OPCODE_SLT:
- case TGSI_OPCODE_SLE:
- case TGSI_OPCODE_SGE:
- case TGSI_OPCODE_SGT:
- case TGSI_OPCODE_SEQ:
- case TGSI_OPCODE_SNE:
- case TGSI_OPCODE_ADD:
- case TGSI_OPCODE_MAX:
- case TGSI_OPCODE_MIN:
- case TGSI_OPCODE_MUL:
- read0 = writemask;
- read1 = writemask;
- break;
-
- case TGSI_OPCODE_DDX:
- case TGSI_OPCODE_DDY:
- read0 = writemask;
- break;
-
- case TGSI_OPCODE_MAD:
- case TGSI_OPCODE_CMP:
- case TGSI_OPCODE_LRP:
- read0 = writemask;
- read1 = writemask;
- read2 = writemask;
- break;
-
- case TGSI_OPCODE_XPD:
- if (writemask & BRW_WRITEMASK_X) read0 |= BRW_WRITEMASK_YZ;
- if (writemask & BRW_WRITEMASK_Y) read0 |= BRW_WRITEMASK_XZ;
- if (writemask & BRW_WRITEMASK_Z) read0 |= BRW_WRITEMASK_XY;
- read1 = read0;
- break;
-
- case TGSI_OPCODE_COS:
- case TGSI_OPCODE_EX2:
- case TGSI_OPCODE_LG2:
- case TGSI_OPCODE_RCP:
- case TGSI_OPCODE_RSQ:
- case TGSI_OPCODE_SIN:
- case TGSI_OPCODE_SCS:
- case WM_CINTERP:
- case WM_PIXELXY:
- read0 = BRW_WRITEMASK_X;
- break;
-
- case TGSI_OPCODE_POW:
- read0 = BRW_WRITEMASK_X;
- read1 = BRW_WRITEMASK_X;
- break;
-
- case TGSI_OPCODE_TEX:
- case TGSI_OPCODE_TXP:
- read0 = get_texcoord_mask(inst->target);
- break;
-
- case TGSI_OPCODE_TXB:
- read0 = get_texcoord_mask(inst->target) | BRW_WRITEMASK_W;
- break;
-
- case WM_WPOSXY:
- read0 = writemask & BRW_WRITEMASK_XY;
- break;
-
- case WM_DELTAXY:
- read0 = writemask & BRW_WRITEMASK_XY;
- read1 = BRW_WRITEMASK_X;
- break;
-
- case WM_PIXELW:
- read0 = BRW_WRITEMASK_X;
- read1 = BRW_WRITEMASK_XY;
- break;
-
- case WM_LINTERP:
- read0 = BRW_WRITEMASK_X;
- read1 = BRW_WRITEMASK_XY;
- break;
-
- case WM_PINTERP:
- read0 = BRW_WRITEMASK_X; /* interpolant */
- read1 = BRW_WRITEMASK_XY; /* deltas */
- read2 = BRW_WRITEMASK_W; /* pixel w */
- break;
-
- case TGSI_OPCODE_DP3:
- read0 = BRW_WRITEMASK_XYZ;
- read1 = BRW_WRITEMASK_XYZ;
- break;
-
- case TGSI_OPCODE_DPH:
- read0 = BRW_WRITEMASK_XYZ;
- read1 = BRW_WRITEMASK_XYZW;
- break;
-
- case TGSI_OPCODE_DP4:
- read0 = BRW_WRITEMASK_XYZW;
- read1 = BRW_WRITEMASK_XYZW;
- break;
-
- case TGSI_OPCODE_LIT:
- read0 = BRW_WRITEMASK_XYW;
- break;
-
- case TGSI_OPCODE_DST:
- case WM_FRONTFACING:
- case TGSI_OPCODE_KILP:
- default:
- break;
- }
-
- track_arg(c, inst, 0, read0);
- track_arg(c, inst, 1, read1);
- track_arg(c, inst, 2, read2);
- }
-
- if (BRW_DEBUG & DEBUG_WM) {
- brw_wm_print_program(c, "pass1");
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-24 10:13:06 +0000