Exverge/suyu
3
0
Fork 0
forked from suyu/suyu
Code Pull requests Activity

Merge pull request #1108 from Subv/front_facing

Browse source 
Shaders: Implemented the gl_FrontFacing input attribute (attr 63).
This commit is contained in:
bunnei 2018-08-19 13:21:14 -04:00 committed by GitHub
commit 9baf5de90c
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/video_core/engines/shader_bytecode.h
View file

@ -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 {

4
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -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)};