diff options
| -rw-r--r-- | src/video_core/engines/shader_bytecode.h | 4 | ||||
| -rw-r--r-- | src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 8 |
2 files changed, 11 insertions, 1 deletions
diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h index 198a470c0..f32a17057 100644 --- a/src/video_core/engines/shader_bytecode.h +++ b/src/video_core/engines/shader_bytecode.h @@ -75,6 +75,10 @@ union Attribute { enum class Index : u64 { Position = 7, Attribute_0 = 8, + // This attribute contains a tuple of (~, ~, InstanceId, VertexId) when inside a vertex + // shader, and a tuple of (TessCoord.x, TessCoord.y, TessCoord.z, ~) when inside a Tess Eval + // shader. + TessCoordInstanceIDVertexID = 47, }; union { diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp index 70ddea643..68efe74b8 100644 --- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp +++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp @@ -299,7 +299,7 @@ public: * are stored as floats, so this may require conversion. * @param reg The destination register to use. * @param elem The element to use for the operation. - * @param attribute The input attibute to use as the source value. + * @param attribute The input attribute to use as the source value. */ void SetRegisterToInputAttibute(const Register& reg, u64 elem, Attribute::Index attribute) { std::string dest = GetRegisterAsFloat(reg); @@ -451,6 +451,12 @@ private: switch (attribute) { case Attribute::Index::Position: return "position"; + case Attribute::Index::TessCoordInstanceIDVertexID: + // TODO(Subv): Find out what the values are for the first two elements when inside a + // vertex shader, and what's the value of the fourth element when inside a Tess Eval + // shader. + ASSERT(stage == Maxwell3D::Regs::ShaderStage::Vertex); + return "vec4(0, 0, gl_InstanceID, gl_VertexID)"; default: const u32 index{static_cast<u32>(attribute) - static_cast<u32>(Attribute::Index::Attribute_0)}; |