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shader: emit bounded SPIR-V operands without temporary vectors

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This commit is contained in:
nmzik
2026-10-09 01:58:39 +02:00
parent 7c6121cba5
commit 8abf99c56e
3 changed files with 26 additions and 36 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterImage.cpp
+21 -29
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@@ -752,14 +752,11 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
const auto EmitGather = [&](uint32_t mip) {
const auto sampled = MakeSampledImage(state, mem.resource, sampler_id, mip);
const auto sample = state.builder.AllocateId();
std::vector<uint32_t> words {
static_cast<uint32_t>(dref ? spv::OpImageDrefGather : spv::OpImageGather), result_type,
sample, sampled, coord, component_or_dref};
if (operand_mask != 0u) {
words.push_back(operand_mask);
words.push_back(offset);
}
state.builder.AddFunction(words);
const std::array operands {operand_mask, offset};
state.builder.AddFunction(
dref ? spv::OpImageDrefGather : spv::OpImageGather, result_type,
sample, sampled, coord, component_or_dref,
std::span(operands).first(operand_mask != 0u ? 2u : 0u));
return sample;
};
const auto sample = image.mip_mode == IR::ImageMipMode::Dynamic && image.mip_count > 1u
@@ -791,24 +788,25 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
dref_value = AddressF32(ctx, mem, *address, layout.dref);
}
}
uint32_t operand_mask = 0;
std::vector<uint32_t> operands;
std::array<uint32_t, 3> operands {};
size_t operand_count = 0;
if (HasFlag(mem, Decoder::ImageSampleFlagDerivative)) {
operand_mask |= spv::ImageOperandsGradMask;
operands.push_back(
CoordF32(ctx, mem, *address, layout.grad_x, dimension_info.spatial_components));
operands.push_back(
CoordF32(ctx, mem, *address, layout.grad_y, dimension_info.spatial_components));
operands[0] = spv::ImageOperandsGradMask;
operands[1] = CoordF32(ctx, mem, *address, layout.grad_x, dimension_info.spatial_components);
operands[2] = CoordF32(ctx, mem, *address, layout.grad_y, dimension_info.spatial_components);
operand_count = 3;
} else if (explicit_lod) {
operand_mask |= spv::ImageOperandsLodMask;
auto lod = ZeroF32(state);
if (HasFlag(mem, Decoder::ImageSampleFlagLod) && layout.lod != NoImageComponent) {
lod = AddressF32(ctx, mem, *address, layout.lod);
}
operands.push_back(lod);
operands[0] = spv::ImageOperandsLodMask;
operands[1] = lod;
operand_count = 2;
} else if (layout.bias != NoImageComponent) {
operand_mask |= spv::ImageOperandsBiasMask;
operands.push_back(AddressF32(ctx, mem, *address, layout.bias));
operands[0] = spv::ImageOperandsBiasMask;
operands[1] = AddressF32(ctx, mem, *address, layout.bias);
operand_count = 2;
}
const auto sampler_id = LoadSamplerDescriptor(state, mem.sampler);
const auto EmitSample = [&](uint32_t resource, uint32_t array_index = 0u) {
@@ -818,16 +816,10 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
ImageDimensionInfoFor(candidate.dimension).coordinate_components,
candidate.cube);
const auto sampled = MakeSampledImage(state, resource, sampler_id, 0u, array_index);
const auto sample = state.builder.AllocateId();
std::vector<uint32_t> sample_operands {result_type, sample, sampled, coord};
if (dref) {
sample_operands.push_back(dref_value);
}
if (operand_mask != 0u) {
sample_operands.push_back(operand_mask);
sample_operands.insert(sample_operands.end(), operands.begin(), operands.end());
}
state.builder.AddFunction(opcode, sample_operands);
const auto sample = state.builder.AllocateId();
state.builder.AddFunction(opcode, result_type, sample, sampled, coord,
std::span(&dref_value, dref ? 1u : 0u),
std::span<const uint32_t>(operands).first(operand_count));
return sample;
};
if (image.indirect_root != mem.resource) {