Support shader gl_Color, gl_SecondaryColor and gl_TexCoord built-ins (#2817)

* Support shader gl_Color, gl_SecondaryColor and gl_TexCoord built-ins

* Shader cache version bump

* Fix back color value on fragment shader

* Disable IPA multiplication for fixed function attributes and back color selection

1 files changed, 7 insertions, 0 deletions

diff --git a/Ryujinx.Graphics.Shader/Decoders/Decoder.cs b/Ryujinx.Graphics.Shader/Decoders/Decoder.cs
index 714aaad3..80d2cb4a 100644
--- a/Ryujinx.Graphics.Shader/Decoders/Decoder.cs
+++ b/Ryujinx.Graphics.Shader/Decoders/Decoder.cs
@@ -319,6 +319,13 @@ namespace Ryujinx.Graphics.Shader.Decoders
                             config.SetInputUserAttribute(index, perPatch);
                         }
                     }
+
+                    if (!isStore &&
+                        ((attr >= AttributeConsts.FrontColorDiffuseR && attr < AttributeConsts.ClipDistance0) ||
+                        (attr >= AttributeConsts.TexCoordBase && attr < AttributeConsts.TexCoordEnd)))
+                    {
+                        config.SetUsedFeature(FeatureFlags.FixedFuncAttr);
+                    }
                 }
             }
         }