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radeonsi: separate primitive ID computation 

Support for new shader stages will be added here.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
This commit is contained in:
Marek Olšák 2015-02-22 14:46:20 +01:00
parent aa1f2af572
commit f66844820e
1 changed files with 20 additions and 7 deletions
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27
src/gallium/drivers/radeonsi/si_shader.c
View File

@ -328,6 +328,24 @@ static void declare_input_vs(
}
}
static LLVMValueRef get_primitive_id(struct lp_build_tgsi_context *bld_base,
unsigned swizzle)
{
struct si_shader_context *si_shader_ctx = si_shader_context(bld_base);
if (swizzle > 0)
return bld_base->uint_bld.zero;
switch (si_shader_ctx->type) {
case TGSI_PROCESSOR_GEOMETRY:
return LLVMGetParam(si_shader_ctx->radeon_bld.main_fn,
SI_PARAM_PRIMITIVE_ID);
default:
assert(0);
return bld_base->uint_bld.zero;
}
}
static LLVMValueRef fetch_input_gs(
struct lp_build_tgsi_context *bld_base,
const struct tgsi_full_src_register *reg,
@ -347,13 +365,8 @@ static LLVMValueRef fetch_input_gs(
unsigned semantic_name = info->input_semantic_name[reg->Register.Index];
unsigned semantic_index = info->input_semantic_index[reg->Register.Index];
if (swizzle != ~0 && semantic_name == TGSI_SEMANTIC_PRIMID) {
if (swizzle == 0)
return LLVMGetParam(si_shader_ctx->radeon_bld.main_fn,
SI_PARAM_PRIMITIVE_ID);
else
return uint->zero;
}
if (swizzle != ~0 && semantic_name == TGSI_SEMANTIC_PRIMID)
return get_primitive_id(bld_base, swizzle);
if (!reg->Register.Dimension)
return NULL;