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[Feat] (MG_Backend/DirectVulkan): get global UBO binding

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This commit is contained in:
swung0x48
2026-02-17 23:25:25 +08:00
parent c2a0db3d12
commit 6b656d3f96
2 changed files with 76 additions and 14 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/UniformDescriptorBinder.cpp
+74 -14
View File
@@ -356,6 +356,64 @@ namespace MobileGL::MG_Backend::DirectVulkan {
return true;
}
Bool UniformDescriptorBinder::ReflectGlobalUboBinding(const MG_State::GLState::ProgramObject& program,
ProgramLayout& layout) const {
layout.globalUboBinding = -1;
const auto& spirv = program.GetGeneratedSpirv();
for (const auto& module : spirv) {
if (module.empty()) {
continue;
}
spvc_context context = nullptr;
spvc_parsed_ir ir = nullptr;
spvc_compiler compiler = nullptr;
spvc_resources resources = nullptr;
if (spvc_context_create(&context) != SPVC_SUCCESS) {
return false;
}
if (spvc_context_parse_spirv(context, module.data(), module.size(), &ir) != SPVC_SUCCESS) {
spvc_context_destroy(context);
continue;
}
if (spvc_context_create_compiler(context, SPVC_BACKEND_GLSL, ir, SPVC_CAPTURE_MODE_TAKE_OWNERSHIP,
&compiler) != SPVC_SUCCESS) {
spvc_context_destroy(context);
continue;
}
if (spvc_compiler_create_shader_resources(compiler, &resources) != SPVC_SUCCESS) {
spvc_context_destroy(context);
continue;
}
const spvc_reflected_resource* list = nullptr;
size_t count = 0;
if (spvc_resources_get_resource_list_for_type(resources, SPVC_RESOURCE_TYPE_UNIFORM_BUFFER, &list, &count) ==
SPVC_SUCCESS) {
for (size_t i = 0; i < count; ++i) {
const char* name = list[i].name ? list[i].name : "";
if (std::strstr(name, MG_Util::ShaderTranspiler::GLOBAL_UBO_NAME) == nullptr) {
continue;
}
const Uint32 binding =
spvc_compiler_get_decoration(compiler, list[i].id, SpvDecorationBinding);
if (binding < m_maxBindings) {
layout.globalUboBinding = static_cast<Int>(binding);
}
break;
}
}
spvc_context_destroy(context);
if (layout.globalUboBinding >= 0) {
break;
}
}
return true;
}
Bool UniformDescriptorBinder::ResolveSamplerDescriptor(VkCommandBuffer commandBuffer,
const MG_State::GLState::ProgramObject& program,
const ProgramLayout& layout, Uint32 binding,
@@ -429,6 +487,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
MGLOG_E("UniformDescriptorBinder::GetOrCreateProgramLayout failed: sampler reflection failed");
return nullptr;
}
if (!ReflectGlobalUboBinding(program, layout)) {
MGLOG_E("UniformDescriptorBinder::GetOrCreateProgramLayout failed: global UBO reflection failed");
return nullptr;
}
Vector<VkDescriptorSetLayoutBinding> bindings;
bindings.reserve(m_maxBindings);
@@ -510,18 +572,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
continue;
}
const auto& blockName = program.GetUniformBlockName(blockIndex);
if (blockName == MG_Util::ShaderTranspiler::GLOBAL_UBO_NAME) {
const void* globalUboData = program.GetUBOData();
const VkDeviceSize globalUboSize = static_cast<VkDeviceSize>(program.GetUBOSize());
if (globalUboData == nullptr || globalUboSize == 0) {
continue;
}
outData[binding] = globalUboData;
outSizes[binding] = std::min(blockSize, globalUboSize);
continue;
}
if (binding >= uniformBindingPointCount) {
continue;
}
@@ -633,8 +683,18 @@ namespace MobileGL::MG_Backend::DirectVulkan {
const void* payload = bindingData[binding];
VkDeviceSize payloadSize = bindingSizes[binding];
if (payload == nullptr || payloadSize == 0) {
payload = kFallbackData;
payloadSize = sizeof(kFallbackData);
if (layout->globalUboBinding == static_cast<Int>(binding)) {
const void* globalUboData = program.GetUBOData();
const VkDeviceSize globalUboSize = static_cast<VkDeviceSize>(program.GetUBOSize());
if (globalUboData != nullptr && globalUboSize > 0) {
payload = globalUboData;
payloadSize = globalUboSize;
}
}
if (payload == nullptr || payloadSize == 0) {
payload = kFallbackData;
payloadSize = sizeof(kFallbackData);
}
}
VkDeviceSize payloadOffset = 0;
MobileGL/MG_Backend/DirectVulkan/Renderer/UniformDescriptorBinder.h
+2
View File
@@ -56,6 +56,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
Vector<Uint32> dynamicBindings;
Vector<Int> samplerUniformLocationByBinding;
Vector<TextureTarget> samplerTextureTargetByBinding;
Int globalUboBinding = -1;
};
static VkDeviceSize AlignUp(VkDeviceSize value, VkDeviceSize alignment);
@@ -63,6 +64,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
static Bool IsSamplerUniformType(GLenum glType);
static TextureTarget UniformTypeToTextureTarget(GLenum glType);
Bool ReflectSamplerBindings(const MG_State::GLState::ProgramObject& program, ProgramLayout& layout) const;
Bool ReflectGlobalUboBinding(const MG_State::GLState::ProgramObject& program, ProgramLayout& layout) const;
Bool ResolveSamplerDescriptor(VkCommandBuffer commandBuffer, const MG_State::GLState::ProgramObject& program,
const ProgramLayout& layout, Uint32 binding,
VkDescriptorImageInfo& outImageInfo) const;