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glsl2: Set InputsRead and OutputsWritten on the generated programs.

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This commit is contained in:
Eric Anholt
2010-06-25 12:52:01 -07:00
parent 364fcd8ee1
commit ffc845a50a
1 changed files with 38 additions and 0 deletions
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38
src/mesa/shader/ir_to_mesa.cpp
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@@ -1172,6 +1172,43 @@ print_program(struct prog_instruction *mesa_instructions,
}
}
static void
count_resources(struct gl_program *prog)
{
prog->InputsRead = 0;
prog->OutputsWritten = 0;
unsigned int i;
for (i = 0; i < prog->NumInstructions; i++) {
struct prog_instruction *inst = &prog->Instructions[i];
unsigned int reg;
switch (inst->DstReg.File) {
case PROGRAM_OUTPUT:
prog->OutputsWritten |= BITFIELD64_BIT(inst->DstReg.Index);
break;
case PROGRAM_INPUT:
prog->InputsRead |= BITFIELD64_BIT(inst->DstReg.Index);
break;
default:
break;
}
for (reg = 0; reg < _mesa_num_inst_src_regs(inst->Opcode); reg++) {
switch (inst->SrcReg[reg].File) {
case PROGRAM_OUTPUT:
prog->OutputsWritten |= BITFIELD64_BIT(inst->DstReg.Index);
break;
case PROGRAM_INPUT:
prog->InputsRead |= BITFIELD64_BIT(inst->DstReg.Index);
break;
default:
break;
}
}
}
}
struct gl_program *
get_mesa_program(GLcontext *ctx, void *mem_ctx, struct glsl_shader *shader)
{
@@ -1372,6 +1409,7 @@ _mesa_glsl_link_shader(GLcontext *ctx, struct gl_shader_program *prog)
linked_prog = get_mesa_program(ctx, whole_program,
whole_program->Shaders[i]);
count_resources(linked_prog);
switch (whole_program->Shaders[i]->Type) {
case GL_VERTEX_SHADER: