diff options
Diffstat (limited to 'src/mesa/shader/program.c')
| -rw-r--r-- | src/mesa/shader/program.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c index d270bf9e1c..4623ff60de 100644 --- a/src/mesa/shader/program.c +++ b/src/mesa/shader/program.c @@ -820,3 +820,63 @@ _mesa_find_free_register(const struct gl_program *prog, GLuint regFile) return -1; } + + + +/** + * "Post-process" a GPU program. This is intended to be used for debugging. + * Example actions include no-op'ing instructions or changing instruction + * behaviour. + */ +void +_mesa_postprocess_program(GLcontext *ctx, struct gl_program *prog) +{ + static const GLfloat white[4] = { 0.5, 0.5, 0.5, 0.5 }; + GLuint i; + GLuint whiteSwizzle; + GLint whiteIndex = _mesa_add_unnamed_constant(prog->Parameters, + white, 4, &whiteSwizzle); + + (void) whiteIndex; + + for (i = 0; i < prog->NumInstructions; i++) { + struct prog_instruction *inst = prog->Instructions + i; + const GLuint n = _mesa_num_inst_src_regs(inst->Opcode); + + (void) n; + + if (_mesa_is_tex_instruction(inst->Opcode)) { +#if 0 + /* replace TEX/TXP/TXB with MOV */ + inst->Opcode = OPCODE_MOV; + inst->DstReg.WriteMask = WRITEMASK_XYZW; + inst->SrcReg[0].Swizzle = SWIZZLE_XYZW; + inst->SrcReg[0].Negate = NEGATE_NONE; +#endif + +#if 0 + /* disable shadow texture mode */ + inst->TexShadow = 0; +#endif + } + + if (inst->Opcode == OPCODE_TXP) { +#if 0 + inst->Opcode = OPCODE_MOV; + inst->DstReg.WriteMask = WRITEMASK_XYZW; + inst->SrcReg[0].File = PROGRAM_CONSTANT; + inst->SrcReg[0].Index = whiteIndex; + inst->SrcReg[0].Swizzle = SWIZZLE_XYZW; + inst->SrcReg[0].Negate = NEGATE_NONE; +#endif +#if 0 + inst->TexShadow = 0; +#endif +#if 0 + inst->Opcode = OPCODE_TEX; + inst->TexShadow = 0; +#endif + } + + } +} |