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#include "draw_private.h"
#include "draw_context.h"
#include "draw_llvm.h"
#include "gallivm/lp_bld_const.h"
#include "gallivm/lp_bld_struct.h"
#include "gallivm/lp_bld_format.h"
#include "gallivm/lp_bld_debug.h"
#include "gallivm/lp_bld_type.h"
#include "util/u_memory.h"
#include "util/u_format.h"
#include "pipe/p_state.h"
#define DRAW_DBG 0
static LLVMValueRef
from_64_float(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMDoubleTypeInContext(gallivm->context), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
return LLVMBuildFPTrunc(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
}
static LLVMValueRef
from_32_float(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMFloatTypeInContext(gallivm->context), 0) , "");
return LLVMBuildLoad(gallivm->builder, bc, "");
}
static INLINE LLVMValueRef
from_8_uscaled(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, val, "");
return LLVMBuildUIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
}
static INLINE LLVMValueRef
from_16_uscaled(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 16), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
return LLVMBuildUIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
}
static INLINE LLVMValueRef
from_32_uscaled(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 32), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
return LLVMBuildUIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
}
static INLINE LLVMValueRef
from_8_sscaled(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, val, "");
return LLVMBuildSIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
}
static INLINE LLVMValueRef
from_16_sscaled(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 16), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
return LLVMBuildSIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
}
static INLINE LLVMValueRef
from_32_sscaled(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 32), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
return LLVMBuildSIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
}
static INLINE LLVMValueRef
from_8_unorm(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, val, "");
LLVMValueRef uscaled = LLVMBuildUIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
return LLVMBuildFDiv(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 255.), "");
}
static INLINE LLVMValueRef
from_16_unorm(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 16), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
LLVMValueRef uscaled = LLVMBuildUIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
return LLVMBuildFDiv(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 65535.), "");
}
static INLINE LLVMValueRef
from_32_unorm(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 32), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
LLVMValueRef uscaled = LLVMBuildUIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
return LLVMBuildFDiv(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 4294967295.), "");
}
static INLINE LLVMValueRef
from_8_snorm(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, val, "");
LLVMValueRef uscaled = LLVMBuildSIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
return LLVMBuildFDiv(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 127.0), "");
}
static INLINE LLVMValueRef
from_16_snorm(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 16), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
LLVMValueRef uscaled = LLVMBuildSIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
return LLVMBuildFDiv(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 32767.0f), "");
}
static INLINE LLVMValueRef
from_32_snorm(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 32), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
LLVMValueRef uscaled = LLVMBuildSIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
return LLVMBuildFDiv(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 2147483647.0), "");
}
static INLINE LLVMValueRef
from_32_fixed(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef bc = LLVMBuildBitCast(gallivm->builder, val,
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 32), 0) , "");
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, bc, "");
LLVMValueRef uscaled = LLVMBuildSIToFP(gallivm->builder, l, LLVMFloatTypeInContext(gallivm->context), "");
return LLVMBuildFDiv(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 65536.0), "");
}
static LLVMValueRef
to_64_float(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
return LLVMBuildFPExt(gallivm->builder, l, LLVMDoubleTypeInContext(gallivm->context), "");
}
static LLVMValueRef
to_32_float(struct gallivm_state *gallivm, LLVMValueRef fp)
{
return LLVMBuildLoad(gallivm->builder, fp, "");
}
static INLINE LLVMValueRef
to_8_uscaled(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
return LLVMBuildFPToUI(gallivm->builder, l, LLVMIntTypeInContext(gallivm->context, 8), "");
}
static INLINE LLVMValueRef
to_16_uscaled(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
return LLVMBuildFPToUI(gallivm->builder, l, LLVMIntTypeInContext(gallivm->context, 16), "");
}
static INLINE LLVMValueRef
to_32_uscaled(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
return LLVMBuildFPToUI(gallivm->builder, l, LLVMIntTypeInContext(gallivm->context, 32), "");
}
static INLINE LLVMValueRef
to_8_sscaled(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
return LLVMBuildFPToSI(gallivm->builder, l, LLVMIntTypeInContext(gallivm->context, 8), "");
}
static INLINE LLVMValueRef
to_16_sscaled(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
return LLVMBuildFPToSI(gallivm->builder, l, LLVMIntTypeInContext(gallivm->context, 16), "");
}
static INLINE LLVMValueRef
to_32_sscaled(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
return LLVMBuildFPToSI(gallivm->builder, l, LLVMIntTypeInContext(gallivm->context, 32), "");
}
static INLINE LLVMValueRef
to_8_unorm(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
LLVMValueRef uscaled = LLVMBuildFPToUI(gallivm->builder, l,
LLVMIntTypeInContext(gallivm->context, 8), "");
return LLVMBuildFMul(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 255.), "");
}
static INLINE LLVMValueRef
to_16_unorm(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
LLVMValueRef uscaled = LLVMBuildFPToUI(gallivm->builder, l,
LLVMIntTypeInContext(gallivm->context, 32), "");
return LLVMBuildFMul(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 65535.), "");
}
static INLINE LLVMValueRef
to_32_unorm(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
LLVMValueRef uscaled = LLVMBuildFPToUI(gallivm->builder, l,
LLVMIntTypeInContext(gallivm->context, 32), "");
return LLVMBuildFMul(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 4294967295.), "");
}
static INLINE LLVMValueRef
to_8_snorm(struct gallivm_state *gallivm, LLVMValueRef val)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, val, "");
LLVMValueRef uscaled = LLVMBuildFPToSI(gallivm->builder, l,
LLVMIntTypeInContext(gallivm->context, 8), "");
return LLVMBuildFMul(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 127.0), "");
}
static INLINE LLVMValueRef
to_16_snorm(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
LLVMValueRef uscaled = LLVMBuildFPToSI(gallivm->builder, l,
LLVMIntTypeInContext(gallivm->context, 16), "");
return LLVMBuildFMul(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 32767.0f), "");
}
static INLINE LLVMValueRef
to_32_snorm(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
LLVMValueRef uscaled = LLVMBuildFPToSI(gallivm->builder, l,
LLVMIntTypeInContext(gallivm->context, 32), "");
return LLVMBuildFMul(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 2147483647.0), "");
}
static INLINE LLVMValueRef
to_32_fixed(struct gallivm_state *gallivm, LLVMValueRef fp)
{
LLVMValueRef l = LLVMBuildLoad(gallivm->builder, fp, "");
LLVMValueRef uscaled = LLVMBuildFPToSI(gallivm->builder, l,
LLVMIntTypeInContext(gallivm->context, 32), "");
return LLVMBuildFMul(gallivm->builder, uscaled,
lp_build_const_float(gallivm, 65536.0), "");
}
typedef LLVMValueRef (*from_func)(struct gallivm_state *, LLVMValueRef);
typedef LLVMValueRef (*to_func)(struct gallivm_state *, LLVMValueRef);
/* so that underneath can avoid function calls which are prohibited
* for static initialization we need this conversion */
enum ll_type {
LL_Double,
LL_Float,
LL_Int32,
LL_Int16,
LL_Int8
};
static INLINE LLVMTypeRef
ll_type_to_llvm(struct gallivm_state *gallivm, enum ll_type type)
{
switch (type) {
case LL_Double:
return LLVMDoubleTypeInContext(gallivm->context);
case LL_Float:
return LLVMFloatTypeInContext(gallivm->context);
case LL_Int32:
return LLVMInt32TypeInContext(gallivm->context);
case LL_Int16:
return LLVMIntTypeInContext(gallivm->context, 16);
case LL_Int8:
return LLVMIntTypeInContext(gallivm->context, 8);
}
return LLVMIntTypeInContext(gallivm->context, 8);
}
static INLINE int
ll_type_size(enum ll_type type)
{
switch (type) {
case LL_Double:
return 8;
case LL_Float:
return 4;
case LL_Int32:
return 4;
case LL_Int16:
return 2;
case LL_Int8:
return 1;
}
return 1;
}
struct draw_llvm_translate {
int format;
from_func from;
to_func to;
enum ll_type type;
int num_components;
} translates[] =
{
{PIPE_FORMAT_R64_FLOAT, from_64_float, to_64_float, LL_Double, 1},
{PIPE_FORMAT_R64G64_FLOAT, from_64_float, to_64_float, LL_Double, 2},
{PIPE_FORMAT_R64G64B64_FLOAT, from_64_float, to_64_float, LL_Double, 3},
{PIPE_FORMAT_R64G64B64A64_FLOAT, from_64_float, to_64_float, LL_Double, 4},
{PIPE_FORMAT_R32_FLOAT, from_32_float, to_32_float, LL_Float, 1},
{PIPE_FORMAT_R32G32_FLOAT, from_32_float, to_32_float, LL_Float, 2},
{PIPE_FORMAT_R32G32B32_FLOAT, from_32_float, to_32_float, LL_Float, 3},
{PIPE_FORMAT_R32G32B32A32_FLOAT, from_32_float, to_32_float, LL_Float, 4},
{PIPE_FORMAT_R32_UNORM, from_32_unorm, to_32_unorm, LL_Int32, 1},
{PIPE_FORMAT_R32G32_UNORM, from_32_unorm, to_32_unorm, LL_Int32, 2},
{PIPE_FORMAT_R32G32B32_UNORM, from_32_unorm, to_32_unorm, LL_Int32, 3},
{PIPE_FORMAT_R32G32B32A32_UNORM, from_32_unorm, to_32_unorm, LL_Int32, 4},
{PIPE_FORMAT_R32_USCALED, from_32_uscaled, to_32_uscaled, LL_Int32, 1},
{PIPE_FORMAT_R32G32_USCALED, from_32_uscaled, to_32_uscaled, LL_Int32, 2},
{PIPE_FORMAT_R32G32B32_USCALED, from_32_uscaled, to_32_uscaled, LL_Int32, 3},
{PIPE_FORMAT_R32G32B32A32_USCALED, from_32_uscaled, to_32_uscaled, LL_Int32, 4},
{PIPE_FORMAT_R32_SNORM, from_32_snorm, to_32_snorm, LL_Int32, 1},
{PIPE_FORMAT_R32G32_SNORM, from_32_snorm, to_32_snorm, LL_Int32, 2},
{PIPE_FORMAT_R32G32B32_SNORM, from_32_snorm, to_32_snorm, LL_Int32, 3},
{PIPE_FORMAT_R32G32B32A32_SNORM, from_32_snorm, to_32_snorm, LL_Int32, 4},
{PIPE_FORMAT_R32_SSCALED, from_32_sscaled, to_32_sscaled, LL_Int32, 1},
{PIPE_FORMAT_R32G32_SSCALED, from_32_sscaled, to_32_sscaled, LL_Int32, 2},
{PIPE_FORMAT_R32G32B32_SSCALED, from_32_sscaled, to_32_sscaled, LL_Int32, 3},
{PIPE_FORMAT_R32G32B32A32_SSCALED, from_32_sscaled, to_32_sscaled, LL_Int32, 4},
{PIPE_FORMAT_R16_UNORM, from_16_unorm, to_16_unorm, LL_Int16, 1},
{PIPE_FORMAT_R16G16_UNORM, from_16_unorm, to_16_unorm, LL_Int16, 2},
{PIPE_FORMAT_R16G16B16_UNORM, from_16_unorm, to_16_unorm, LL_Int16, 3},
{PIPE_FORMAT_R16G16B16A16_UNORM, from_16_unorm, to_16_unorm, LL_Int16, 4},
{PIPE_FORMAT_R16_USCALED, from_16_uscaled, to_16_uscaled, LL_Int16, 1},
{PIPE_FORMAT_R16G16_USCALED, from_16_uscaled, to_16_uscaled, LL_Int16, 2},
{PIPE_FORMAT_R16G16B16_USCALED, from_16_uscaled, to_16_uscaled, LL_Int16, 3},
{PIPE_FORMAT_R16G16B16A16_USCALED, from_16_uscaled, to_16_uscaled, LL_Int16, 4},
{PIPE_FORMAT_R16_SNORM, from_16_snorm, to_16_snorm, LL_Int16, 1},
{PIPE_FORMAT_R16G16_SNORM, from_16_snorm, to_16_snorm, LL_Int16, 2},
{PIPE_FORMAT_R16G16B16_SNORM, from_16_snorm, to_16_snorm, LL_Int16, 3},
{PIPE_FORMAT_R16G16B16A16_SNORM, from_16_snorm, to_16_snorm, LL_Int16, 4},
{PIPE_FORMAT_R16_SSCALED, from_16_sscaled, to_16_sscaled, LL_Int16, 1},
{PIPE_FORMAT_R16G16_SSCALED, from_16_sscaled, to_16_sscaled, LL_Int16, 2},
{PIPE_FORMAT_R16G16B16_SSCALED, from_16_sscaled, to_16_sscaled, LL_Int16, 3},
{PIPE_FORMAT_R16G16B16A16_SSCALED, from_16_sscaled, to_16_sscaled, LL_Int16, 4},
{PIPE_FORMAT_R8_UNORM, from_8_unorm, to_8_unorm, LL_Int8, 1},
{PIPE_FORMAT_R8G8_UNORM, from_8_unorm, to_8_unorm, LL_Int8, 2},
{PIPE_FORMAT_R8G8B8_UNORM, from_8_unorm, to_8_unorm, LL_Int8, 3},
{PIPE_FORMAT_R8G8B8A8_UNORM, from_8_unorm, to_8_unorm, LL_Int8, 4},
{PIPE_FORMAT_R8_USCALED, from_8_uscaled, to_8_uscaled, LL_Int8, 1},
{PIPE_FORMAT_R8G8_USCALED, from_8_uscaled, to_8_uscaled, LL_Int8, 2},
{PIPE_FORMAT_R8G8B8_USCALED, from_8_uscaled, to_8_uscaled, LL_Int8, 3},
{PIPE_FORMAT_R8G8B8A8_USCALED, from_8_uscaled, to_8_uscaled, LL_Int8, 4},
{PIPE_FORMAT_R8_SNORM, from_8_snorm, to_8_snorm, LL_Int8, 1},
{PIPE_FORMAT_R8G8_SNORM, from_8_snorm, to_8_snorm, LL_Int8, 2},
{PIPE_FORMAT_R8G8B8_SNORM, from_8_snorm, to_8_snorm, LL_Int8, 3},
{PIPE_FORMAT_R8G8B8A8_SNORM, from_8_snorm, to_8_snorm, LL_Int8, 4},
{PIPE_FORMAT_R8_SSCALED, from_8_sscaled, to_8_sscaled, LL_Int8, 1},
{PIPE_FORMAT_R8G8_SSCALED, from_8_sscaled, to_8_sscaled, LL_Int8, 2},
{PIPE_FORMAT_R8G8B8_SSCALED, from_8_sscaled, to_8_sscaled, LL_Int8, 3},
{PIPE_FORMAT_R8G8B8A8_SSCALED, from_8_sscaled, to_8_sscaled, LL_Int8, 4},
{PIPE_FORMAT_R32_FIXED, from_32_fixed, to_32_fixed, LL_Int32, 1},
{PIPE_FORMAT_R32G32_FIXED, from_32_fixed, to_32_fixed, LL_Int32, 2},
{PIPE_FORMAT_R32G32B32_FIXED, from_32_fixed, to_32_fixed, LL_Int32, 3},
{PIPE_FORMAT_R32G32B32A32_FIXED, from_32_fixed, to_32_fixed, LL_Int32, 4},
};
static LLVMValueRef
fetch(struct gallivm_state *gallivm,
LLVMValueRef ptr, int val_size, int nr_components,
from_func func)
{
int i;
int offset = 0;
LLVMValueRef res =
LLVMConstNull(LLVMVectorType(LLVMFloatTypeInContext(gallivm->context), 4));
LLVMValueRef defaults[4];
defaults[0] =
defaults[1] =
defaults[2] = lp_build_const_float(gallivm, 0.0);
defaults[3] = lp_build_const_float(gallivm, 1.0);
for (i = 0; i < nr_components; ++i) {
LLVMValueRef src_index = lp_build_const_int32(gallivm, offset);
LLVMValueRef dst_index = lp_build_const_int32(gallivm, i);
LLVMValueRef src_tmp;
LLVMValueRef component;
src_tmp = LLVMBuildGEP(gallivm->builder, ptr, &src_index, 1, "src_tmp");
/* convert src_tmp to float */
component = func(gallivm, src_tmp);
/* vec.comp = component */
res = LLVMBuildInsertElement(gallivm->builder,
res,
component,
dst_index, "");
offset += val_size;
}
for (; i < 4; ++i) {
LLVMValueRef dst_index = lp_build_const_int32(gallivm, i);
res = LLVMBuildInsertElement(gallivm->builder,
res,
defaults[i],
dst_index, "");
}
return res;
}
LLVMValueRef
draw_llvm_translate_from(struct gallivm_state *gallivm,
LLVMValueRef vbuffer,
enum pipe_format from_format)
{
const struct util_format_description *format_desc;
LLVMValueRef zero;
int i;
struct lp_type type = lp_float32_vec4_type();
/*
* The above can only cope with straight arrays: no bitfields,
* swizzles, or half floats.
*/
for (i = 0; i < Elements(translates); ++i) {
if (translates[i].format == from_format) {
/*LLVMTypeRef type = ll_type_to_llvm(translates[i].type);*/
return fetch(gallivm,
vbuffer,
ll_type_size(translates[i].type),
translates[i].num_components,
translates[i].from);
}
}
/*
* This doesn't handle anything bigger than 32bits, or half floats
* yet.
*
* TODO: unify all this code into lp_build_fetch_rgba_aos().
*/
format_desc = util_format_description(from_format);
zero = LLVMConstNull(LLVMInt32TypeInContext(gallivm->context));
return lp_build_fetch_rgba_aos(gallivm, format_desc, type, vbuffer, zero, zero, zero);
}
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