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[Fix] (MG_Backend/DirectGLES): mark integer varyings flat

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swung0x48
2026-06-06 18:58:27 +08:00
parent 24efb0bb17
commit 2937043e77
3 changed files with 33 additions and 0 deletions
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MobileGL/MG_Backend/DirectGLES/Managers.cpp
+1
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@@ -1104,6 +1104,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
source = RemoveLayoutBinding(source);
source = ProcessOutColorLocations(source);
source = ForceFlatIntegerVaryings(source, glShaderType);
source = ForceSupporterOutput(source);
// Patch for Photon compiler precision issue
MobileGL/MG_Backend/DirectGLES/Utils.cpp
+31
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@@ -101,6 +101,37 @@ namespace MobileGL::MG_Backend::DirectGLES {
return result;
}
String ForceFlatIntegerVaryings(const String& glslCode, GLenum shaderType) {
#ifdef TRACY_ENABLE
ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
#endif
String result = glslCode;
const String integerType = R"((?:(?:lowp|mediump|highp)\s+)?(?:u?int|[iu]vec[234])\b)";
auto addFlatQualifier = [&result, &integerType](const String& qualifier) {
const std::regex pattern("(layout\\s*\\([^)]*\\)\\s*)(?!(?:flat|smooth|noperspective)\\s)(" +
qualifier + "\\s+" + integerType + ")");
result = std::regex_replace(result, pattern, "$1flat $2");
};
switch (shaderType) {
case GL_VERTEX_SHADER:
addFlatQualifier("out");
break;
case GL_GEOMETRY_SHADER:
addFlatQualifier("in");
addFlatQualifier("out");
break;
case GL_FRAGMENT_SHADER:
addFlatQualifier("in");
break;
default:
break;
}
return result;
}
String RemoveLayoutBinding(const String& glslCode) {
#ifdef TRACY_ENABLE
ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
MobileGL/MG_Backend/DirectGLES/Utils.h
+1
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@@ -43,6 +43,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
namespace PrgramImpl {
String ProcessOutColorLocations(const String& glslCode);
String ForceSupporterOutput(const String& glslCode);
String ForceFlatIntegerVaryings(const String& glslCode, GLenum shaderType);
String RemoveLayoutBinding(const String& glslCode);
} // namespace PrgramImpl