diff options
| -rw-r--r-- | src/shader_recompiler/backend/spirv/emit_spirv_image.cpp | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp index 021933a8c..fea3bc112 100644 --- a/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp +++ b/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp @@ -310,11 +310,22 @@ Id EmitBoundImageWrite(EmitContext&) { Id EmitImageSampleImplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, Id coords, 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); - return Emit(&EmitContext::OpImageSparseSampleImplicitLod, - &EmitContext::OpImageSampleImplicitLod, ctx, inst, ctx.F32[4], Texture(ctx, index), - coords, operands.Mask(), operands.Span()); + 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::OpImageSparseSampleImplicitLod, + &EmitContext::OpImageSampleImplicitLod, ctx, inst, ctx.F32[4], + Texture(ctx, index), coords, operands.Mask(), operands.Span()); + } else { + // We can't use implicit lods on non-fragment stages on SPIR-V. Maxwell hardware behaves as + // if the lod was explicitly zero. This may change on Turing with implicit compute + // derivatives + const Id lod{ctx.Const(0)}; + const ImageOperands operands(ctx, false, true, info.has_lod_clamp != 0, lod, offset); + return Emit(&EmitContext::OpImageSparseSampleExplicitLod, + &EmitContext::OpImageSampleExplicitLod, ctx, inst, ctx.F32[4], + Texture(ctx, index), coords, operands.Mask(), operands.Span()); + } } Id EmitImageSampleExplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, Id coords, |