diff options
| -rw-r--r-- | src/video_core/engines/shader_bytecode.h | 3 | ||||
| -rw-r--r-- | src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h index b038a9d92..7e0e4858a 100644 --- a/src/video_core/engines/shader_bytecode.h +++ b/src/video_core/engines/shader_bytecode.h @@ -79,6 +79,9 @@ union Attribute { // shader, and a tuple of (TessCoord.x, TessCoord.y, TessCoord.z, ~) when inside a Tess Eval // shader. TessCoordInstanceIDVertexID = 47, + // This attribute contains a tuple of (Unk, Unk, Unk, gl_FrontFacing) when inside a fragment + // shader. It is unknown what the other values contain. + FrontFacing = 63, }; union { diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp index bb01b3c27..48ddbc687 100644 --- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp +++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp @@ -542,6 +542,10 @@ private: // shader. ASSERT(stage == Maxwell3D::Regs::ShaderStage::Vertex); return "vec4(0, 0, uintBitsToFloat(instance_id.x), uintBitsToFloat(gl_VertexID))"; + case Attribute::Index::FrontFacing: + // TODO(Subv): Find out what the values are for the other elements. + ASSERT(stage == Maxwell3D::Regs::ShaderStage::Fragment); + return "vec4(0, 0, 0, uintBitsToFloat(gl_FrontFacing ? 1 : 0))"; default: const u32 index{static_cast<u32>(attribute) - static_cast<u32>(Attribute::Index::Attribute_0)}; |