src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c

   1 /*
   2  * Copyright 2009 Nicolai Hähnle <nhaehnle@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "radeon_compiler.h"
  24
  25 #include <stdio.h>
  26
  27 #include "radeon_program_alu.h"
  28 #include "r300_fragprog.h"
  29 #include "r300_fragprog_swizzle.h"
  30 #include "r500_fragprog.h"
  31
  32
  33 static void dataflow_outputs_mark_use(void * userdata, void * data,
  34                 void (*callback)(void *, unsigned int, unsigned int))
  35 {
  36         struct r300_fragment_program_compiler * c = userdata;
  37         callback(data, c->OutputColor, RC_MASK_XYZW);
  38         callback(data, c->OutputDepth, RC_MASK_W);
  39 }
  40
  41 static void rewrite_depth_out(struct r300_fragment_program_compiler * c)
  42 {
  43         struct rc_instruction *rci;
  44
  45         for (rci = c->Base.Program.Instructions.Next; rci != &c->Base.Program.Instructions; rci = rci->Next) {
  46                 struct rc_sub_instruction * inst = &rci->I;
  47
  48                 if (inst->DstReg.File != RC_FILE_OUTPUT || inst->DstReg.Index != c->OutputDepth)
  49                         continue;
  50
  51                 if (inst->DstReg.WriteMask & RC_MASK_Z) {
  52                         inst->DstReg.WriteMask = RC_MASK_W;
  53                 } else {
  54                         inst->DstReg.WriteMask = 0;
  55                         continue;
  56                 }
  57
  58                 switch (inst->Opcode) {
  59                         case RC_OPCODE_FRC:
  60                         case RC_OPCODE_MOV:
  61                                 inst->SrcReg[0] = lmul_swizzle(RC_SWIZZLE_ZZZZ, inst->SrcReg[0]);
  62                                 break;
  63                         case RC_OPCODE_ADD:
  64                         case RC_OPCODE_MAX:
  65                         case RC_OPCODE_MIN:
  66                         case RC_OPCODE_MUL:
  67                                 inst->SrcReg[0] = lmul_swizzle(RC_SWIZZLE_ZZZZ, inst->SrcReg[0]);
  68                                 inst->SrcReg[1] = lmul_swizzle(RC_SWIZZLE_ZZZZ, inst->SrcReg[1]);
  69                                 break;
  70                         case RC_OPCODE_CMP:
  71                         case RC_OPCODE_MAD:
  72                                 inst->SrcReg[0] = lmul_swizzle(RC_SWIZZLE_ZZZZ, inst->SrcReg[0]);
  73                                 inst->SrcReg[1] = lmul_swizzle(RC_SWIZZLE_ZZZZ, inst->SrcReg[1]);
  74                                 inst->SrcReg[2] = lmul_swizzle(RC_SWIZZLE_ZZZZ, inst->SrcReg[2]);
  75                                 break;
  76                         default:
  77                                 // Scalar instructions needn't be reswizzled
  78                                 break;
  79                 }
  80         }
  81 }
  82
  83 void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c)
  84 {
  85         rewrite_depth_out(c);
  86
  87         if (c->is_r500) {
  88                 struct radeon_program_transformation transformations[] = {
  89                         { &r500_transform_TEX, c },
  90                         { &radeonTransformALU, 0 },
  91                         { &radeonTransformDeriv, 0 },
  92                         { &radeonTransformTrigScale, 0 }
  93                 };
  94                 radeonLocalTransform(&c->Base, 4, transformations);
  95
  96                 c->Base.SwizzleCaps = &r500_swizzle_caps;
  97         } else {
  98                 struct radeon_program_transformation transformations[] = {
  99                         { &r300_transform_TEX, c },
 100                         { &radeonTransformALU, 0 },
 101                         { &radeonTransformTrigSimple, 0 }
 102                 };
 103                 radeonLocalTransform(&c->Base, 3, transformations);
 104
 105                 c->Base.SwizzleCaps = &r300_swizzle_caps;
 106         }
 107
 108         if (c->Base.Debug) {
 109                 fprintf(stderr, "Fragment Program: After native rewrite:\n");
 110                 rc_print_program(&c->Base.Program, 0);
 111                 fflush(stderr);
 112         }
 113
 114         rc_dataflow_annotate(&c->Base, &dataflow_outputs_mark_use, c);
 115         rc_dataflow_dealias(&c->Base);
 116         rc_dataflow_swizzles(&c->Base);
 117
 118         if (c->Base.Debug) {
 119                 fprintf(stderr, "Compiler: after dataflow passes:\n");
 120                 rc_print_program(&c->Base.Program, 0);
 121                 fflush(stderr);
 122         }
 123
 124         if (c->is_r500) {
 125                 r500BuildFragmentProgramHwCode(c);
 126         } else {
 127                 r300BuildFragmentProgramHwCode(c);
 128         }
 129
 130         rc_constants_copy(&c->code->constants, &c->Base.Program.Constants);
 131
 132         if (c->Base.Debug) {
 133                 if (c->is_r500) {
 134                         r500FragmentProgramDump(c->code);
 135                 } else {
 136                         r300FragmentProgramDump(c->code);
 137                 }
 138         }
 139 }