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[Fix] (MG/GLSLTool): Finally fixing blur shader!

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- use glslang mapIO() function to correctly link shader in/out varyings
- no need to flip y (already using VK_KHR_maintenance1 to specify negative viewport height)
- use pointers to avoid unnecessary copying
This commit is contained in:
swung0x48
2025-06-24 16:33:16 +08:00
parent 20a945c6f0
commit 0c031d3e0b
4 changed files with 18 additions and 21 deletions
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MG/MG_UTIL/Program/GLSLTool.cpp
+6 -9
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@@ -111,12 +111,8 @@ namespace MG_Util::Program {
// TODO: Use other methods to implement clip space fixing.
size_t pos = output_glsl.find("\n gl_Position.y = -gl_Position.y;\n}");
size_t blur_pos = output_glsl.find("BlurDir"); // TODO: Fix this really hacky way of fixing blur shader...
if (pos != std::string::npos) {
if (blur_pos != std::string::npos) {
output_glsl.replace(pos, strlen("\n gl_Position.y = -gl_Position.y;\n}"), "\n}");
} else
output_glsl.replace(pos, strlen("\n gl_Position.y = -gl_Position.y;\n}"), "\n gl_Position.y = -gl_Position.y;\n gl_Position.z = (gl_Position.z + gl_Position.w) * 0.5;\n}");
output_glsl.replace(pos, strlen("\n gl_Position.y = -gl_Position.y;\n}"), "\n gl_Position.z = (gl_Position.z + gl_Position.w) * 0.5;\n}");
}
return output_glsl;
}
@@ -645,12 +641,12 @@ namespace MG_Util::Program {
std::vector<EShLanguage> usedShaderTypes;
TProgram program;
for (GLuint shaderId : prog.attachedShaders) {
auto shaderObject = state.GetShaderObject(shaderId);
EShLanguage shLanguage = GetEShLanguageByShaderType(shaderObject.type);
auto* shaderObject = state.GetShaderObject(shaderId);
EShLanguage shLanguage = GetEShLanguageByShaderType(shaderObject->type);
TShader* shader = nullptr;
std::string infoLogOfShader = CompileGLSLToTShader(shaderObject.type, shaderObject.source, shader);
std::string infoLogOfShader = CompileGLSLToTShader(shaderObject->type, shaderObject->source, shader);
if (!infoLogOfShader.empty()) {
infoLog = "Error: [glslang] Cannot compile " + GetShaderTypeName(shaderObject.type) +
infoLog = "Error: [glslang] Cannot compile " + GetShaderTypeName(shaderObject->type) +
" :\n" + infoLogOfShader;
return {};
}
@@ -691,6 +687,7 @@ namespace MG_Util::Program {
infoLog = "Error: [glslang] Cannot link the program of the single shader:\n" + std::to_string(program.getInfoLog());
return {};
}
program.mapIO();
std::vector<unsigned> spirv;
SpvOptions spvOptions;