GL3+: avoid conflict between OSX shader patching and UnifiedShader

OGRECave · Dec 12, 2021 · 396ed67 · 396ed67
1 parent 0fa0a11
commit 396ed67
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/RenderSystems/GL3Plus/src/GLSL/src/OgreGLSLShader.cpp b/RenderSystems/GL3Plus/src/GLSL/src/OgreGLSLShader.cpp
@@ -363,6 +363,9 @@ namespace Ogre {
             if(belowVersionPos != 0)
                 mSource = mSource.erase(0, belowVersionPos); // drop old definition
 
+            if(mSource.find("out vec4") == String::npos && mType == GPT_FRAGMENT_PROGRAM)
+                mSource.insert(0, "#define gl_FragColor FragColor\nout vec4 FragColor;\n");
+
             // automatically upgrade to glsl150. thank you apple.
             const char* prefixFp =
                     "#version 150\n"
@@ -374,9 +377,7 @@ namespace Ogre {
                     "#define texture2DLod textureLod\n"
                     "#define texture2DProj textureProj\n"
                     "#define textureCubeLod textureLod\n"
-                    "#define shadow2DProj textureProj\n"
-                    "#define gl_FragColor FragColor\n"
-                    "out vec4 FragColor;\n";
+                    "#define shadow2DProj textureProj\n";
             const char* prefixVp =
                     "#version 150\n"
                     "#define attribute in\n"