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[Fix] (MG_State/Program): fixing discrapencies between builtins of Vulkan and OpenGL GLSL (gl_VertexID/gl_VertexIndex)

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This commit is contained in:
swung0x48
2025-07-10 18:04:19 +08:00
parent 59e0291f9e
commit 82a4be37f2
4 changed files with 31 additions and 9 deletions
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MG/MG_UTIL/Program/GLSLTool.cpp
+19 -9
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@@ -6,13 +6,22 @@
namespace MG_Util::Program {
void RenameGLSLBuiltinsForVulkan(std::string &src) {
static const std::vector<std::pair<std::regex, std::string>> rules = {
{ std::regex(R"(gl_VertexID)"), "gl_VertexIndex" },
{ std::regex(R"(gl_InstanceID)"), "gl_InstanceIndex" }
};
// static const std::vector<std::pair<std::regex, std::string>> rules = {
// { std::regex(R"(gl_VertexID)"), "gl_VertexIndex" },
// { std::regex(R"(gl_InstanceID)"), "gl_InstanceIndex" }
// };
//
// for (auto &rule : rules) {
// src = std::regex_replace(src, rule.first, rule.second);
// }
size_t pos = src.find("gl_VertexID");
if (pos != std::string::npos) {
src.replace(pos, strlen("gl_VertexID"), "gl_VertexIndex");
}
for (auto &rule : rules) {
src = std::regex_replace(src, rule.first, rule.second);
pos = src.find("gl_InstanceID");
if (pos != std::string::npos) {
src.replace(pos, strlen("gl_InstanceID"), "gl_InstanceIndex");
}
}
@@ -94,14 +103,13 @@ namespace MG_Util::Program {
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_options_set_bool(options, SPVC_COMPILER_OPTION_GLSL_VULKAN_SEMANTICS, SPVC_TRUE);
// spvc_compiler_options_set_bool(options, SPVC_COMPILER_OPTION_GLSL_VULKAN_SEMANTICS, SPVC_TRUE);
spvc_compiler_install_compiler_options(compiler, options);
if ((result = spvc_compiler_compile(compiler, &glsl_source)) != SPVC_SUCCESS) {
MG_Util::Debug::LogD("[SPIRV-Cross] Failed to compile to GLSL at BindInputLayoutLocation: %s", spvc_context_get_last_error_string(context));
spvc_context_destroy(context);
MG_Util::Debug::LogE("[SPIRV-Cross] Failed to compile to GLSL: %s",
spvc_context_get_last_error_string(context));
return {};
}
@@ -573,6 +581,8 @@ namespace MG_Util::Program {
}
uboBlock += "};\n";
MG_Util::Debug::LogD("UBO Generated:\n%s", uboBlock.c_str());
for (auto& [id, source] : shaderSources) {
size_t insertPos = 0, lastDirectivePos = 0;
size_t searchPos = 0;