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radeonsi/nir: add si_nir_lookup_interp_param() helper

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Timothy Arceri 2018-01-30 14:54:13 +11:00
parent b8808848ce
commit 3a47b138e3
3 changed files with 42 additions and 0 deletions
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2
src/amd/common/ac_shader_abi.h
View file

@ -26,6 +26,8 @@
#include <llvm-c/Core.h>
#include "compiler/shader_enums.h"
enum ac_descriptor_type {
AC_DESC_IMAGE,
AC_DESC_FMASK,

4
src/gallium/drivers/radeonsi/si_shader_internal.h
View file

@ -292,6 +292,10 @@ LLVMValueRef si_llvm_load_input_gs(struct ac_shader_abi *abi,
LLVMTypeRef type,
unsigned swizzle);
LLVMValueRef si_nir_lookup_interp_param(struct ac_shader_abi *abi,
enum glsl_interp_mode interp,
unsigned location);
void si_llvm_emit_store(struct lp_build_tgsi_context *bld_base,
const struct tgsi_full_instruction *inst,
const struct tgsi_opcode_info *info,

36
src/gallium/drivers/radeonsi/si_shader_nir.c
View file

@ -648,6 +648,42 @@ LLVMValueRef si_nir_load_input_gs(struct ac_shader_abi *abi,
return ac_build_varying_gather_values(&ctx->ac, value, num_components, component);
}
LLVMValueRef
si_nir_lookup_interp_param(struct ac_shader_abi *abi,
enum glsl_interp_mode interp, unsigned location)
{
struct si_shader_context *ctx = si_shader_context_from_abi(abi);
int interp_param_idx = -1;
switch (interp) {
case INTERP_MODE_FLAT:
return NULL;
case INTERP_MODE_SMOOTH:
case INTERP_MODE_NONE:
if (location == INTERP_CENTER)
interp_param_idx = SI_PARAM_PERSP_CENTER;
else if (location == INTERP_CENTROID)
interp_param_idx = SI_PARAM_PERSP_CENTROID;
else if (location == INTERP_SAMPLE)
interp_param_idx = SI_PARAM_PERSP_SAMPLE;
break;
case INTERP_MODE_NOPERSPECTIVE:
if (location == INTERP_CENTER)
interp_param_idx = SI_PARAM_LINEAR_CENTER;
else if (location == INTERP_CENTROID)
interp_param_idx = SI_PARAM_LINEAR_CENTROID;
else if (location == INTERP_SAMPLE)
interp_param_idx = SI_PARAM_LINEAR_SAMPLE;
break;
default:
assert(!"Unhandled interpolation mode.");
return NULL;
}
return interp_param_idx != -1 ?
LLVMGetParam(ctx->main_fn, interp_param_idx) : NULL;
}
static LLVMValueRef
si_nir_load_sampler_desc(struct ac_shader_abi *abi,
unsigned descriptor_set, unsigned base_index,