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[Feat] (MG_Util/ShaderTranspiler): POC to query member offsets from UBO

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swung0x48
2025-08-06 17:14:01 +08:00
parent cbf6019d92
commit 548263279e
2 changed files with 20 additions and 0 deletions
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MobileGL/MG_Test/Program/ProgramTest.cpp
+3
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@@ -223,4 +223,7 @@ TEST_F(ProgramTest, DecompProgram) {
EXPECT_EQ(it->second, uniform.location);
}
}
auto ubo0 = sessions[0].GetShaderInterface(SPVC_RESOURCE_TYPE_UNIFORM_BUFFER);
auto ubo1 = sessions[1].GetShaderInterface(SPVC_RESOURCE_TYPE_UNIFORM_BUFFER);
}
MobileGL/MG_Util/ShaderTranspiler/Types.h
+17
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@@ -1,4 +1,5 @@
#pragma once
#include "MG_Util/Debug/Log.h"
namespace MobileGL {
namespace MG_Util {
@@ -95,6 +96,22 @@ namespace MobileGL {
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;