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shader_recompiler: fix emulation of 3D textureGrad

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This commit is contained in:
Liam
2023-09-01 22:41:01 -04:00
parent 5ce41fa213
commit 9245b426e3
2 changed files with 34 additions and 3 deletions
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2
src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
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@@ -558,7 +558,7 @@ void EmitImageGradient(EmitContext& ctx, IR::Inst& inst, const IR::Value& index,
if (multi_component) {
if (info.num_derivates >= 3) {
const auto offset_vec{ctx.var_alloc.Consume(offset)};
ctx.Add("{}=textureGrad({},{},vec3({}.xz, {}.x),vec3({}.yz, {}.y));", texel, texture,
ctx.Add("{}=textureGrad({},{},vec3({}.xz, {}.x),vec3({}.yw, {}.y));", texel, texture,
coords, derivatives_vec, offset_vec, derivatives_vec, offset_vec);
return;
}

35
src/shader_recompiler/backend/spirv/emit_spirv_image.cpp
View File

@@ -91,6 +91,34 @@ public:
}
}
explicit ImageOperands(EmitContext& ctx, bool has_lod_clamp, Id derivates_1, Id derivates_2,
Id offset, Id lod_clamp) {
if (!Sirit::ValidId(derivates_1) || !Sirit::ValidId(derivates_2)) {
throw LogicError("Derivates must be present");
}
boost::container::static_vector<Id, 3> deriv_1_accum{
ctx.OpCompositeExtract(ctx.F32[1], derivates_1, 0),
ctx.OpCompositeExtract(ctx.F32[1], derivates_1, 2),
ctx.OpCompositeExtract(ctx.F32[1], derivates_2, 0),
};
boost::container::static_vector<Id, 3> deriv_2_accum{
ctx.OpCompositeExtract(ctx.F32[1], derivates_1, 1),
ctx.OpCompositeExtract(ctx.F32[1], derivates_1, 3),
ctx.OpCompositeExtract(ctx.F32[1], derivates_2, 1),
};
const Id derivates_id1{ctx.OpCompositeConstruct(
ctx.F32[3], std::span{deriv_1_accum.data(), deriv_1_accum.size()})};
const Id derivates_id2{ctx.OpCompositeConstruct(
ctx.F32[3], std::span{deriv_2_accum.data(), deriv_2_accum.size()})};
Add(spv::ImageOperandsMask::Grad, derivates_id1, derivates_id2);
if (Sirit::ValidId(offset)) {
Add(spv::ImageOperandsMask::Offset, offset);
}
if (has_lod_clamp) {
Add(spv::ImageOperandsMask::MinLod, lod_clamp);
}
}
std::span<const Id> Span() const noexcept {
return std::span{operands.data(), operands.size()};
}
@@ -524,8 +552,11 @@ Id EmitImageQueryLod(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, I
Id EmitImageGradient(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, Id coords,
Id derivates, Id offset, Id lod_clamp) {
const auto info{inst->Flags<IR::TextureInstInfo>()};
const ImageOperands operands(ctx, info.has_lod_clamp != 0, derivates, info.num_derivates,
offset, lod_clamp);
const auto operands =
info.num_derivates == 3
? ImageOperands(ctx, info.has_lod_clamp != 0, derivates, offset, {}, lod_clamp)
: ImageOperands(ctx, info.has_lod_clamp != 0, derivates, info.num_derivates, offset,
lod_clamp);
return Emit(&EmitContext::OpImageSparseSampleExplicitLod,
&EmitContext::OpImageSampleExplicitLod, ctx, inst, ctx.F32[4],
Texture(ctx, info, index), coords, operands.Mask(), operands.Span());