diff options
Diffstat (limited to 'src/shader_recompiler/backend/glsl')
4 files changed, 71 insertions, 7 deletions
diff --git a/src/shader_recompiler/backend/glsl/emit_context.cpp b/src/shader_recompiler/backend/glsl/emit_context.cpp index ed10eca8a..f0e9dffc2 100644 --- a/src/shader_recompiler/backend/glsl/emit_context.cpp +++ b/src/shader_recompiler/backend/glsl/emit_context.cpp @@ -200,6 +200,27 @@ std::string_view OutputPrimitive(OutputTopology topology) { throw InvalidArgument("Invalid output topology {}", topology); } +void SetupLegacyOutPerVertex(EmitContext& ctx, std::string& header) { + if (!ctx.info.stores_legacy_varyings) { + return; + } + if (ctx.info.stores_fixed_fnc_textures) { + header += "vec4 gl_TexCoord[8];"; + } + if (ctx.info.stores_color_front_diffuse) { + header += "vec4 gl_FrontColor;"; + } + if (ctx.info.stores_color_front_specular) { + header += "vec4 gl_FrontSecondaryColor;"; + } + if (ctx.info.stores_color_back_diffuse) { + header += "vec4 gl_BackColor;"; + } + if (ctx.info.stores_color_back_specular) { + header += "vec4 gl_BackSecondaryColor;"; + } +} + void SetupOutPerVertex(EmitContext& ctx, std::string& header) { if (!StoresPerVertexAttributes(ctx.stage)) { return; @@ -215,18 +236,34 @@ void SetupOutPerVertex(EmitContext& ctx, std::string& header) { ctx.stage != Stage::Geometry) { header += "int gl_ViewportIndex;"; } + SetupLegacyOutPerVertex(ctx, header); header += "};"; if (ctx.info.stores_viewport_index && ctx.stage == Stage::Geometry) { header += "out int gl_ViewportIndex;"; } } + +void SetupLegacyInPerFragment(EmitContext& ctx, std::string& header) { + if (!ctx.info.loads_legacy_varyings) { + return; + } + header += "in gl_PerFragment{"; + if (ctx.info.loads_fixed_fnc_textures) { + header += "vec4 gl_TexCoord[8];"; + } + if (ctx.info.loads_color_front_diffuse) { + header += "vec4 gl_Color;"; + } + header += "};"; +} + } // Anonymous namespace EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile& profile_, const RuntimeInfo& runtime_info_) : info{program.info}, profile{profile_}, runtime_info{runtime_info_} { header += "#pragma optionNV(fastmath off)\n"; - SetupExtensions(header); + SetupExtensions(); stage = program.stage; switch (program.stage) { case Stage::VertexA: @@ -271,6 +308,8 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile break; } SetupOutPerVertex(*this, header); + SetupLegacyInPerFragment(*this, header); + for (size_t index = 0; index < info.input_generics.size(); ++index) { const auto& generic{info.input_generics[index]}; if (generic.used) { @@ -306,7 +345,7 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile DefineConstants(); } -void EmitContext::SetupExtensions(std::string&) { +void EmitContext::SetupExtensions() { if (profile.support_gl_texture_shadow_lod) { header += "#extension GL_EXT_texture_shadow_lod : enable\n"; } diff --git a/src/shader_recompiler/backend/glsl/emit_context.h b/src/shader_recompiler/backend/glsl/emit_context.h index 685f56089..8fa87c02c 100644 --- a/src/shader_recompiler/backend/glsl/emit_context.h +++ b/src/shader_recompiler/backend/glsl/emit_context.h @@ -157,7 +157,7 @@ public: bool uses_cc_carry{}; private: - void SetupExtensions(std::string& header); + void SetupExtensions(); void DefineConstantBuffers(Bindings& bindings); void DefineStorageBuffers(Bindings& bindings); void DefineGenericOutput(size_t index, u32 invocations); diff --git a/src/shader_recompiler/backend/glsl/emit_glsl.cpp b/src/shader_recompiler/backend/glsl/emit_glsl.cpp index 3e6add7cd..d76b63b2d 100644 --- a/src/shader_recompiler/backend/glsl/emit_glsl.cpp +++ b/src/shader_recompiler/backend/glsl/emit_glsl.cpp @@ -166,7 +166,7 @@ void EmitCode(EmitContext& ctx, const IR::Program& program) { } std::string GlslVersionSpecifier(const EmitContext& ctx) { - if (ctx.uses_y_direction) { + if (ctx.uses_y_direction || ctx.info.stores_legacy_varyings) { return " compatibility"; } return ""; diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp index 96296ad28..3eeccfb3c 100644 --- a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp +++ b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp @@ -98,6 +98,10 @@ void GetCbuf16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const bit_offset); } } + +u32 TexCoordIndex(IR::Attribute attr) { + return (static_cast<u32>(attr) - static_cast<u32>(IR::Attribute::FixedFncTexture0S)) / 4; +} } // Anonymous namespace void EmitGetCbufU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, @@ -178,6 +182,17 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, ctx.AddF32("{}=in_attr{}{}.{};", inst, index, InputVertexIndex(ctx, vertex), swizzle); return; } + // GLSL only exposes 8 legacy texcoords + if (attr >= IR::Attribute::FixedFncTexture8S && attr <= IR::Attribute::FixedFncTexture9Q) { + // LOG_WARNING(..., "GLSL does not allow access to gl_TexCoord[{}]", TexCoordIndex(attr)); + ctx.AddF32("{}=0.f;", inst); + return; + } + if (attr >= IR::Attribute::FixedFncTexture0S && attr <= IR::Attribute::FixedFncTexture7Q) { + const u32 index{TexCoordIndex(attr)}; + ctx.AddF32("{}=gl_TexCoord[{}].{};", inst, index, swizzle); + return; + } switch (attr) { case IR::Attribute::PrimitiveId: ctx.AddF32("{}=itof(gl_PrimitiveID);", inst); @@ -227,19 +242,29 @@ void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, std::string_view val [[maybe_unused]] std::string_view vertex) { if (IR::IsGeneric(attr)) { const u32 index{IR::GenericAttributeIndex(attr)}; - const u32 element{IR::GenericAttributeElement(attr)}; - const GenericElementInfo& info{ctx.output_generics.at(index).at(element)}; + const u32 attr_element{IR::GenericAttributeElement(attr)}; + const GenericElementInfo& info{ctx.output_generics.at(index).at(attr_element)}; const auto output_decorator{OutputVertexIndex(ctx)}; if (info.num_components == 1) { ctx.Add("{}{}={};", info.name, output_decorator, value); } else { - const u32 index_element{element - info.first_element}; + const u32 index_element{attr_element - info.first_element}; ctx.Add("{}{}.{}={};", info.name, output_decorator, "xyzw"[index_element], value); } return; } const u32 element{static_cast<u32>(attr) % 4}; const char swizzle{"xyzw"[element]}; + // GLSL only exposes 8 legacy texcoords + if (attr >= IR::Attribute::FixedFncTexture8S && attr <= IR::Attribute::FixedFncTexture9Q) { + // LOG_WARNING(..., "GLSL does not allow access to gl_TexCoord[{}]", TexCoordIndex(attr)); + return; + } + if (attr >= IR::Attribute::FixedFncTexture0S && attr <= IR::Attribute::FixedFncTexture7Q) { + const u32 index{TexCoordIndex(attr)}; + ctx.Add("gl_TexCoord[{}].{}={};", index, swizzle, value); + return; + } switch (attr) { case IR::Attribute::Layer: if (ctx.stage != Stage::Geometry && |