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[Fix] (Diligent/Shader): Flip vertex y for vertex shaders.

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This commit is contained in:
BZLZHH
2025-06-21 21:44:22 +08:00
parent a1bdaed2f6
commit 6ac9beaa61
1 changed files with 9 additions and 1 deletions
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MG/MG_UTIL/Program/GLSLTool.cpp
+9 -1
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@@ -93,6 +93,8 @@ namespace MG_Util::Program {
spvc_compiler_create_compiler_options(compiler, &options);
spvc_compiler_options_set_uint(options, SPVC_COMPILER_OPTION_GLSL_VERSION, 450);
spvc_compiler_options_set_bool(options, SPVC_COMPILER_OPTION_GLSL_ES, SPVC_FALSE);
spvc_compiler_options_set_bool(options, SPVC_COMPILER_OPTION_FLIP_VERTEX_Y, SPVC_TRUE);
spvc_compiler_install_compiler_options(compiler, options);
if ((result = spvc_compiler_compile(compiler, &glsl_source)) != SPVC_SUCCESS) {
@@ -105,7 +107,13 @@ namespace MG_Util::Program {
output_glsl = glsl_source;
spvc_context_destroy(context);
MG_Util::Debug::LogI("[SPIRV-Cross] Converted GLSL:\n%s", output_glsl.c_str());
// TODO: Use other methods to implement clip space fixing.
size_t pos = output_glsl.find("\n gl_Position.y = -gl_Position.y;\n}");
if (pos != std::string::npos) {
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}");
}
return output_glsl;
}