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emit_spirv_image: Fix depth image implicit lod sample in compute 

Ensures all drivers behave the same way in this case.
This commit is contained in:
ameerj 2021-09-24 20:38:43 -04:00
parent 3791c7ca82
commit 06894b0711
1 changed files with 16 additions and 5 deletions
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17
src/shader_recompiler/backend/spirv/emit_spirv_image.cpp
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@ -355,11 +355,22 @@ Id EmitImageSampleExplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Value&
Id EmitImageSampleDrefImplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Value& index,
Id coords, Id dref, Id bias_lc, const IR::Value& offset) {
const auto info{inst->Flags<IR::TextureInstInfo>()};
const ImageOperands operands(ctx, info.has_bias != 0, false, info.has_lod_clamp != 0, bias_lc,
offset);
if (ctx.stage == Stage::Fragment) {
const ImageOperands operands(ctx, info.has_bias != 0, false, info.has_lod_clamp != 0,
bias_lc, offset);
return Emit(&EmitContext::OpImageSparseSampleDrefImplicitLod,
&EmitContext::OpImageSampleDrefImplicitLod, ctx, inst, ctx.F32[1],
Texture(ctx, info, index), coords, dref, operands.MaskOptional(), operands.Span());
Texture(ctx, info, index), coords, dref, operands.MaskOptional(),
operands.Span());
} else {
// Implicit lods in compute behave on hardware as if sampling from LOD 0.
// This check is to ensure all drivers behave this way.
const Id lod{ctx.Const(0.0f)};
const ImageOperands operands(ctx, false, true, false, lod, offset);
return Emit(&EmitContext::OpImageSparseSampleDrefExplicitLod,
&EmitContext::OpImageSampleDrefExplicitLod, ctx, inst, ctx.F32[1],
Texture(ctx, info, index), coords, dref, operands.Mask(), operands.Span());
}
}
Id EmitImageSampleDrefExplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Value& index,