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[Feat] (MG_Util/ShaderCompiler): extract global UBO offset from GL plain uniforms

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swung0x48
2025-08-08 13:46:08 +08:00
parent fcd52a9177
commit 916fdf40af
5 changed files with 81 additions and 22 deletions
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MobileGL/MG_Util/ShaderTranspiler/SpvcSession.cpp
+38 -18
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@@ -54,32 +54,52 @@ namespace ShaderTranspiler {
var.name = list[i].name;
var.location = spvc_compiler_get_decoration(compiler, list[i].id, SpvDecorationLocation);
variables.push_back(var);
if (resource_type == SPVC_RESOURCE_TYPE_UNIFORM_BUFFER) {
spvc_type type = spvc_compiler_get_type_handle(compiler, list[i].base_type_id);
size_t num_members = spvc_type_get_num_member_types(type);
printf("uniform %s {\n", var.name.c_str());
for (size_t j = 0; j < num_members; ++j) {
const char *memberName = spvc_compiler_get_member_name(compiler, list[i].base_type_id, j);
// auto memberTypeId = spvc_type_get_member_type(type, j);
// auto memberType = spvc_compiler_get_type_handle(compiler, memberTypeId);
unsigned memberOffset = 0;
spvc_compiler_type_struct_member_offset(compiler, type, j, &memberOffset);
printf("\b%s; // %u\n", memberName, memberOffset);
}
printf("}\n");
}
}
std::sort(variables.begin(), variables.end());
return variables;
}
spvc_result SpvcSession::Compile(const char** result) const {
return spvc_compiler_compile(compiler, result);
spvc_result SpvcSession::Compile(const char** result) {
SPVC_CHK_INIT
SPVC_CHK_RESULT(spvc_compiler_compile(compiler, result));
SPVC_CHK_RESULT(ParseMetaData());
SPVC_CHK_RETURN
}
spvc_result SpvcSession::ParseMetaData() {
SPVC_CHK_INIT
metadata = SpvcMetadata();
const spvc_reflected_resource *list = nullptr;
size_t count = 0;
SPVC_CHK_RESULT(
spvc_resources_get_resource_list_for_type(resources, SPVC_RESOURCE_TYPE_UNIFORM_BUFFER, &list, &count);
)
for (size_t i = 0; i < count; ++i) {
if (spvc_compiler_has_decoration(compiler, list[i].id, SpvDecorationBuiltIn)) {
continue;
}
if (strcmp(list[i].name, GLOBAL_UBO_NAME) == 0) {
spvc_type type = spvc_compiler_get_type_handle(compiler, list[i].base_type_id);
size_t num_members = spvc_type_get_num_member_types(type);
for (size_t j = 0; j < num_members; ++j) {
const char *memberName = spvc_compiler_get_member_name(compiler, list[i].base_type_id, j);
unsigned memberOffset = 0;
SPVC_CHK_RESULT(spvc_compiler_type_struct_member_offset(compiler, type, j, &memberOffset);)
metadata.plainUniformOffsetsInUBO[memberName] = memberOffset;
}
}
}
SPVC_CHK_RETURN
}
const SpvcMetadata& SpvcSession::GetMetadata() const {
return metadata;
}
const char* SpvcSession::GetLastErrorString() const {
return spvc_context_get_last_error_string(context);