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shader_recompiler: use float image operations on load/store when required

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This commit is contained in:
Liam 2023-12-19 10:55:56 -05:00
parent 3d268b8480
commit 9e9aed41be
10 changed files with 184 additions and 39 deletions
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22
src/shader_recompiler/backend/spirv/emit_spirv_image.cpp
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@ -214,16 +214,16 @@ Id TextureImage(EmitContext& ctx, IR::TextureInstInfo info, const IR::Value& ind
}
}
Id Image(EmitContext& ctx, const IR::Value& index, IR::TextureInstInfo info) {
std::pair<Id, bool> Image(EmitContext& ctx, const IR::Value& index, IR::TextureInstInfo info) {
if (!index.IsImmediate() || index.U32() != 0) {
throw NotImplementedException("Indirect image indexing");
}
if (info.type == TextureType::Buffer) {
const ImageBufferDefinition def{ctx.image_buffers.at(info.descriptor_index)};
return ctx.OpLoad(def.image_type, def.id);
return {ctx.OpLoad(def.image_type, def.id), def.is_integer};
} else {
const ImageDefinition def{ctx.images.at(info.descriptor_index)};
return ctx.OpLoad(def.image_type, def.id);
return {ctx.OpLoad(def.image_type, def.id), def.is_integer};
}
}
@ -566,13 +566,23 @@ Id EmitImageRead(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, Id co
LOG_WARNING(Shader_SPIRV, "Typeless image read not supported by host");
return ctx.ConstantNull(ctx.U32[4]);
}
return Emit(&EmitContext::OpImageSparseRead, &EmitContext::OpImageRead, ctx, inst, ctx.U32[4],
Image(ctx, index, info), coords, std::nullopt, std::span<const Id>{});
const auto [image, is_integer] = Image(ctx, index, info);
const Id result_type{is_integer ? ctx.U32[4] : ctx.F32[4]};
Id color{Emit(&EmitContext::OpImageSparseRead, &EmitContext::OpImageRead, ctx, inst,
result_type, image, coords, std::nullopt, std::span<const Id>{})};
if (!is_integer) {
color = ctx.OpBitcast(ctx.U32[4], color);
}
return color;
}
void EmitImageWrite(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, Id coords, Id color) {
const auto info{inst->Flags<IR::TextureInstInfo>()};
ctx.OpImageWrite(Image(ctx, index, info), coords, color);
const auto [image, is_integer] = Image(ctx, index, info);
if (!is_integer) {
color = ctx.OpBitcast(ctx.F32[4], color);
}
ctx.OpImageWrite(image, coords, color);
}
Id EmitIsTextureScaled(EmitContext& ctx, const IR::Value& index) {