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gallivm: add swizzle support where one channel isn't defined.

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NIR doesn't always define all output channels
relies on outputs being memset to 0

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Dave Airlie
2019-09-05 15:41:05 +10:00
parent 3eb27cfccd
commit 5363cda52b
2 changed files with 34 additions and 11 deletions
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3
src/gallium/auxiliary/draw/draw_llvm.c
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@@ -1673,7 +1673,7 @@ draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant)
struct lp_bld_tgsi_system_values system_values;
memset(&system_values, 0, sizeof(system_values));
memset(&outputs, 0, sizeof(outputs));
snprintf(func_name, sizeof(func_name), "draw_llvm_vs_variant%u",
variant->shader->variants_cached);
@@ -2416,6 +2416,7 @@ draw_gs_llvm_generate(struct draw_llvm *llvm,
unsigned vector_length = variant->shader->base.vector_length;
memset(&system_values, 0, sizeof(system_values));
memset(&outputs, 0, sizeof(outputs));
snprintf(func_name, sizeof(func_name), "draw_llvm_gs_variant%u",
variant->shader->variants_cached);

42
src/gallium/auxiliary/gallivm/lp_bld_swizzle.c
View File

@@ -652,7 +652,7 @@ lp_build_transpose_aos(struct gallivm_state *gallivm,
struct lp_type double_type_lp = single_type_lp;
LLVMTypeRef single_type;
LLVMTypeRef double_type;
LLVMValueRef t0, t1, t2, t3;
LLVMValueRef t0 = NULL, t1 = NULL, t2 = NULL, t3 = NULL;
double_type_lp.length >>= 1;
double_type_lp.width <<= 1;
@@ -660,17 +660,39 @@ lp_build_transpose_aos(struct gallivm_state *gallivm,
double_type = lp_build_vec_type(gallivm, double_type_lp);
single_type = lp_build_vec_type(gallivm, single_type_lp);
LLVMValueRef double_type_zero = LLVMConstNull(double_type);
/* Interleave x, y, z, w -> xy and zw */
t0 = lp_build_interleave2_half(gallivm, single_type_lp, src[0], src[1], 0);
t1 = lp_build_interleave2_half(gallivm, single_type_lp, src[2], src[3], 0);
t2 = lp_build_interleave2_half(gallivm, single_type_lp, src[0], src[1], 1);
t3 = lp_build_interleave2_half(gallivm, single_type_lp, src[2], src[3], 1);
if (src[0]) {
LLVMValueRef src1 = src[1];
if (!src1)
src1 = LLVMConstNull(single_type);
t0 = lp_build_interleave2_half(gallivm, single_type_lp, src[0], src1, 0);
t2 = lp_build_interleave2_half(gallivm, single_type_lp, src[0], src1, 1);
/* Cast to double width type for second interleave */
t0 = LLVMBuildBitCast(gallivm->builder, t0, double_type, "t0");
t1 = LLVMBuildBitCast(gallivm->builder, t1, double_type, "t1");
t2 = LLVMBuildBitCast(gallivm->builder, t2, double_type, "t2");
t3 = LLVMBuildBitCast(gallivm->builder, t3, double_type, "t3");
/* Cast to double width type for second interleave */
t0 = LLVMBuildBitCast(gallivm->builder, t0, double_type, "t0");
t2 = LLVMBuildBitCast(gallivm->builder, t2, double_type, "t2");
}
if (src[2]) {
LLVMValueRef src3 = src[3];
if (!src3)
src3 = LLVMConstNull(single_type);
t1 = lp_build_interleave2_half(gallivm, single_type_lp, src[2], src3, 0);
t3 = lp_build_interleave2_half(gallivm, single_type_lp, src[2], src3, 1);
/* Cast to double width type for second interleave */
t1 = LLVMBuildBitCast(gallivm->builder, t1, double_type, "t1");
t3 = LLVMBuildBitCast(gallivm->builder, t3, double_type, "t3");
}
if (!t0)
t0 = double_type_zero;
if (!t1)
t1 = double_type_zero;
if (!t2)
t2 = double_type_zero;
if (!t3)
t3 = double_type_zero;
/* Interleave xy, zw -> xyzw */
dst[0] = lp_build_interleave2_half(gallivm, double_type_lp, t0, t1, 0);