diff options
Diffstat (limited to '')
-rw-r--r-- | src/shader_recompiler/backend/glsl/emit_glsl_image.cpp | 82 |
1 files changed, 65 insertions, 17 deletions
diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp index cecdbb9d6..418505475 100644 --- a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp +++ b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp @@ -25,6 +25,13 @@ std::string Image(EmitContext& ctx, const IR::TextureInstInfo& info, const IR::V return fmt::format("img{}{}", def.binding, index_offset); } +bool IsTextureMsaa(EmitContext& ctx, const IR::TextureInstInfo& info) { + if (info.type == TextureType::Buffer) { + return false; + } + return ctx.info.texture_descriptors.at(info.descriptor_index).is_multisample; +} + std::string CastToIntVec(std::string_view value, const IR::TextureInstInfo& info) { switch (info.type) { case TextureType::Color1D: @@ -136,6 +143,21 @@ IR::Inst* PrepareSparse(IR::Inst& inst) { } return sparse_inst; } + +std::string ImageGatherSubpixelOffset(const IR::TextureInstInfo& info, std::string_view texture, + std::string_view coords) { + switch (info.type) { + case TextureType::Color2D: + case TextureType::Color2DRect: + return fmt::format("{}+vec2(0.001953125)/vec2(textureSize({}, 0))", coords, texture); + case TextureType::ColorArray2D: + case TextureType::ColorCube: + return fmt::format("vec3({0}.xy+vec2(0.001953125)/vec2(textureSize({1}, 0)),{0}.z)", coords, + texture); + default: + return std::string{coords}; + } +} } // Anonymous namespace void EmitImageSampleImplicitLod(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, @@ -333,6 +355,13 @@ void EmitImageGather(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, LOG_WARNING(Shader_GLSL, "Device does not support sparse texture queries. STUBBING"); ctx.AddU1("{}=true;", *sparse_inst); } + std::string coords_with_subpixel_offset; + if (ctx.profile.need_gather_subpixel_offset) { + // Apply a subpixel offset of 1/512 the texel size of the texture to ensure same rounding on + // AMD hardware as on Maxwell or other Nvidia architectures. + coords_with_subpixel_offset = ImageGatherSubpixelOffset(info, texture, coords); + coords = coords_with_subpixel_offset; + } if (!sparse_inst || !supports_sparse) { if (offset.IsEmpty()) { ctx.Add("{}=textureGather({},{},int({}));", texel, texture, coords, @@ -380,6 +409,13 @@ void EmitImageGatherDref(EmitContext& ctx, IR::Inst& inst, const IR::Value& inde LOG_WARNING(Shader_GLSL, "Device does not support sparse texture queries. STUBBING"); ctx.AddU1("{}=true;", *sparse_inst); } + std::string coords_with_subpixel_offset; + if (ctx.profile.need_gather_subpixel_offset) { + // Apply a subpixel offset of 1/512 the texel size of the texture to ensure same rounding on + // AMD hardware as on Maxwell or other Nvidia architectures. + coords_with_subpixel_offset = ImageGatherSubpixelOffset(info, texture, coords); + coords = coords_with_subpixel_offset; + } if (!sparse_inst || !supports_sparse) { if (offset.IsEmpty()) { ctx.Add("{}=textureGather({},{},{});", texel, texture, coords, dref); @@ -414,7 +450,7 @@ void EmitImageGatherDref(EmitContext& ctx, IR::Inst& inst, const IR::Value& inde void EmitImageFetch(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, std::string_view coords, std::string_view offset, std::string_view lod, - [[maybe_unused]] std::string_view ms) { + std::string_view ms) { const auto info{inst.Flags<IR::TextureInstInfo>()}; if (info.has_bias) { throw NotImplementedException("EmitImageFetch Bias texture samples"); @@ -431,19 +467,24 @@ void EmitImageFetch(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, ctx.AddU1("{}=true;", *sparse_inst); } if (!sparse_inst || !supports_sparse) { - if (!offset.empty()) { - ctx.Add("{}=texelFetchOffset({},{},int({}),{});", texel, texture, - CoordsCastToInt(coords, info), lod, CoordsCastToInt(offset, info)); + const auto int_coords{CoordsCastToInt(coords, info)}; + if (!ms.empty()) { + ctx.Add("{}=texelFetch({},{},int({}));", texel, texture, int_coords, ms); + } else if (!offset.empty()) { + ctx.Add("{}=texelFetchOffset({},{},int({}),{});", texel, texture, int_coords, lod, + CoordsCastToInt(offset, info)); } else { if (info.type == TextureType::Buffer) { ctx.Add("{}=texelFetch({},int({}));", texel, texture, coords); } else { - ctx.Add("{}=texelFetch({},{},int({}));", texel, texture, - CoordsCastToInt(coords, info), lod); + ctx.Add("{}=texelFetch({},{},int({}));", texel, texture, int_coords, lod); } } return; } + if (!ms.empty()) { + throw NotImplementedException("EmitImageFetch Sparse MSAA samples"); + } if (!offset.empty()) { ctx.AddU1("{}=sparseTexelsResidentARB(sparseTexelFetchOffsetARB({},{},int({}),{},{}));", *sparse_inst, texture, CastToIntVec(coords, info), lod, @@ -455,29 +496,36 @@ void EmitImageFetch(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, } void EmitImageQueryDimensions(EmitContext& ctx, IR::Inst& inst, const IR::Value& index, - std::string_view lod) { + std::string_view lod, const IR::Value& skip_mips_val) { const auto info{inst.Flags<IR::TextureInstInfo>()}; const auto texture{Texture(ctx, info, index)}; + const bool is_msaa{IsTextureMsaa(ctx, info)}; + const bool skip_mips{skip_mips_val.U1()}; + const auto mips{skip_mips ? "0u" : fmt::format("uint(textureQueryLevels({}))", texture)}; + if (is_msaa && !skip_mips) { + throw NotImplementedException("EmitImageQueryDimensions MSAA QueryLevels"); + } + if (info.type == TextureType::Buffer && !skip_mips) { + throw NotImplementedException("EmitImageQueryDimensions TextureType::Buffer QueryLevels"); + } + const bool uses_lod{!is_msaa && info.type != TextureType::Buffer}; + const auto lod_str{uses_lod ? fmt::format(",int({})", lod) : ""}; switch (info.type) { case TextureType::Color1D: - return ctx.AddU32x4( - "{}=uvec4(uint(textureSize({},int({}))),0u,0u,uint(textureQueryLevels({})));", inst, - texture, lod, texture); + return ctx.AddU32x4("{}=uvec4(uint(textureSize({}{})),0u,0u,{});", inst, texture, lod_str, + mips); case TextureType::ColorArray1D: case TextureType::Color2D: case TextureType::ColorCube: case TextureType::Color2DRect: - return ctx.AddU32x4( - "{}=uvec4(uvec2(textureSize({},int({}))),0u,uint(textureQueryLevels({})));", inst, - texture, lod, texture); + return ctx.AddU32x4("{}=uvec4(uvec2(textureSize({}{})),0u,{});", inst, texture, lod_str, + mips); case TextureType::ColorArray2D: case TextureType::Color3D: case TextureType::ColorArrayCube: - return ctx.AddU32x4( - "{}=uvec4(uvec3(textureSize({},int({}))),uint(textureQueryLevels({})));", inst, texture, - lod, texture); + return ctx.AddU32x4("{}=uvec4(uvec3(textureSize({}{})),{});", inst, texture, lod_str, mips); case TextureType::Buffer: - throw NotImplementedException("EmitImageQueryDimensions Texture buffers"); + return ctx.AddU32x4("{}=uvec4(uint(textureSize({})),0u,0u,{});", inst, texture, mips); } throw LogicError("Unspecified image type {}", info.type.Value()); } |