[Fix] (MG_Backend/DirectVulkan): Add shader position transforms & correct namespace name.

2026-09-10 13:18:31 +09:00 · 2026-02-16 14:06:34 +08:00
parent 3bafdee45d
commit 40fc317f69
7 changed files with 401 additions and 29 deletions
@@ -347,4 +347,4 @@ if (NOT ANDROID)
    if (MOBILEGL_BUILD_BENCHMARK)
        add_subdirectory(MobileGL/MG_Benchmark)
    endif()
-endif()
+endif()
@@ -15,14 +15,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {

    void Clear(GLbitfield mask) {
        if (USE_TMP_IMPL) {
-            MobileGL::Backend::DirectVulkan::TmpImpl::Clear(mask);
+            MobileGL::MG_Backend::DirectVulkan::TmpImpl::Clear(mask);
            return;
        }
    }

    void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices) {
        if (USE_TMP_IMPL) {
-            MobileGL::Backend::DirectVulkan::TmpImpl::DrawElements(mode, count, type, indices);
+            MobileGL::MG_Backend::DirectVulkan::TmpImpl::DrawElements(mode, count, type, indices);
            return;
        }
        pVulkanRenderer->RenderFrame();
@@ -8,7 +8,296 @@

 #include "ProgramManager.h"

+#include "MG_Util/Debug/Log.h"
+#include "spirv-tools/libspirv.h"
+#include "spirv-tools/optimizer.hpp"
+#include "source/opt/constants.h"
+#include "source/opt/instruction.h"
+#include "source/opt/ir_builder.h"
+#include "source/opt/ir_context.h"
+#include "source/opt/module.h"
+#include "source/opt/pass.h"
+#include "source/opt/type_manager.h"
+
+#include <bit>
+
 namespace MobileGL::MG_Backend::DirectVulkan::VkManager {
+    namespace {
+        using ProgramObject = MG_State::GLState::ProgramObject;
+        using ShaderObject = MG_State::GLState::ShaderObject;
+
+        struct PositionTargetInfo {
+            uint32_t variableId = 0;
+            uint32_t vectorTypeId = 0;
+            uint32_t floatTypeId = 0;
+            uint32_t vectorPtrTypeId = 0;
+            uint32_t memberIndex = 0;
+            bool isMember = false;
+        };
+
+        bool IsVec4Float32(spvtools::opt::IRContext* context, uint32_t typeId, uint32_t* outFloatTypeId) {
+            auto* vecInst = context->get_def_use_mgr()->GetDef(typeId);
+            if (!vecInst || vecInst->opcode() != spv::Op::OpTypeVector) return false;
+            if (vecInst->GetSingleWordInOperand(1) != 4) return false;
+
+            const uint32_t floatTypeId = vecInst->GetSingleWordInOperand(0);
+            auto* floatInst = context->get_def_use_mgr()->GetDef(floatTypeId);
+            if (!floatInst || floatInst->opcode() != spv::Op::OpTypeFloat) return false;
+            if (floatInst->GetSingleWordInOperand(0) != 32) return false;
+
+            if (outFloatTypeId) *outFloatTypeId = floatTypeId;
+            return true;
+        }
+
+        bool ResolveDirectPositionTarget(spvtools::opt::IRContext* context, uint32_t variableId,
+                                         PositionTargetInfo* outTarget) {
+            auto* varInst = context->get_def_use_mgr()->GetDef(variableId);
+            if (!varInst || varInst->opcode() != spv::Op::OpVariable) return false;
+            if (varInst->GetSingleWordInOperand(0) != static_cast<uint32_t>(spv::StorageClass::Output)) return false;
+
+            auto* ptrTypeInst = context->get_def_use_mgr()->GetDef(varInst->type_id());
+            if (!ptrTypeInst || ptrTypeInst->opcode() != spv::Op::OpTypePointer) return false;
+            if (ptrTypeInst->GetSingleWordInOperand(0) != static_cast<uint32_t>(spv::StorageClass::Output))
+                return false;
+
+            PositionTargetInfo target{};
+            target.variableId = variableId;
+            target.vectorTypeId = ptrTypeInst->GetSingleWordInOperand(1);
+            if (!IsVec4Float32(context, target.vectorTypeId, &target.floatTypeId)) return false;
+            target.vectorPtrTypeId = varInst->type_id();
+            target.isMember = false;
+
+            *outTarget = target;
+            return true;
+        }
+
+        uint32_t FindOutputVectorPointerTypeId(spvtools::opt::IRContext* context, uint32_t vectorTypeId) {
+            auto* vectorType = context->get_type_mgr()->GetType(vectorTypeId);
+            if (!vectorType) return 0;
+            spvtools::opt::analysis::Pointer ptrType(vectorType, spv::StorageClass::Output);
+            return context->get_type_mgr()->GetTypeInstruction(&ptrType);
+        }
+
+        bool ResolveMemberPositionTarget(spvtools::opt::IRContext* context, uint32_t structTypeId, uint32_t memberIndex,
+                                         PositionTargetInfo* outTarget) {
+            auto* structInst = context->get_def_use_mgr()->GetDef(structTypeId);
+            if (!structInst || structInst->opcode() != spv::Op::OpTypeStruct) return false;
+            if (memberIndex >= structInst->NumInOperands()) return false;
+
+            const uint32_t vectorTypeId = structInst->GetSingleWordInOperand(memberIndex);
+            uint32_t floatTypeId = 0;
+            if (!IsVec4Float32(context, vectorTypeId, &floatTypeId)) return false;
+
+            const uint32_t vectorPtrTypeId = FindOutputVectorPointerTypeId(context, vectorTypeId);
+            if (vectorPtrTypeId == 0) return false;
+
+            for (auto& inst : context->module()->types_values()) {
+                if (inst.opcode() != spv::Op::OpVariable) continue;
+                if (inst.GetSingleWordInOperand(0) != static_cast<uint32_t>(spv::StorageClass::Output)) continue;
+
+                auto* ptrTypeInst = context->get_def_use_mgr()->GetDef(inst.type_id());
+                if (!ptrTypeInst || ptrTypeInst->opcode() != spv::Op::OpTypePointer) continue;
+                if (ptrTypeInst->GetSingleWordInOperand(0) != static_cast<uint32_t>(spv::StorageClass::Output))
+                    continue;
+                if (ptrTypeInst->GetSingleWordInOperand(1) != structTypeId) continue;
+
+                PositionTargetInfo target{};
+                target.variableId = inst.result_id();
+                target.vectorTypeId = vectorTypeId;
+                target.floatTypeId = floatTypeId;
+                target.vectorPtrTypeId = vectorPtrTypeId;
+                target.memberIndex = memberIndex;
+                target.isMember = true;
+                *outTarget = target;
+                return true;
+            }
+
+            return false;
+        }
+
+        bool FindPositionTarget(spvtools::opt::IRContext* context, PositionTargetInfo* outTarget) {
+            Vector<Pair<uint32_t, uint32_t>> memberCandidates;
+            constexpr uint32_t kDecorationBuiltIn = static_cast<uint32_t>(spv::Decoration::BuiltIn);
+            constexpr uint32_t kBuiltInPosition = static_cast<uint32_t>(spv::BuiltIn::Position);
+
+            for (auto& inst : context->module()->annotations()) {
+                if (inst.opcode() == spv::Op::OpDecorate) {
+                    if (inst.NumInOperands() < 3) continue;
+                    if (inst.GetSingleWordInOperand(1) != kDecorationBuiltIn) continue;
+                    if (inst.GetSingleWordInOperand(2) != kBuiltInPosition) continue;
+                    if (ResolveDirectPositionTarget(context, inst.GetSingleWordInOperand(0), outTarget)) return true;
+                } else if (inst.opcode() == spv::Op::OpMemberDecorate) {
+                    if (inst.NumInOperands() < 4) continue;
+                    if (inst.GetSingleWordInOperand(2) != kDecorationBuiltIn) continue;
+                    if (inst.GetSingleWordInOperand(3) != kBuiltInPosition) continue;
+                    memberCandidates.emplace_back(inst.GetSingleWordInOperand(0), inst.GetSingleWordInOperand(1));
+                }
+            }
+
+            for (const auto& [structTypeId, memberIndex] : memberCandidates) {
+                if (ResolveMemberPositionTarget(context, structTypeId, memberIndex, outTarget)) return true;
+            }
+            return false;
+        }
+
+        bool InsertPositionFixup(spvtools::opt::IRContext* context, spvtools::opt::Instruction* insertBefore,
+                                 const PositionTargetInfo& target, uint32_t halfConstId, bool doYFlip, bool doZRemap) {
+            using namespace spvtools::opt;
+            InstructionBuilder builder(context, insertBefore,
+                                       IRContext::kAnalysisDefUse | IRContext::kAnalysisInstrToBlockMapping);
+
+            uint32_t positionPtrId = target.variableId;
+            if (target.isMember) {
+                const uint32_t memberIndexId = builder.GetUintConstantId(target.memberIndex);
+                if (memberIndexId == 0) return false;
+                auto* access = builder.AddAccessChain(target.vectorPtrTypeId, target.variableId, {memberIndexId});
+                if (!access) return false;
+                positionPtrId = access->result_id();
+            }
+
+            auto* position = builder.AddLoad(target.vectorTypeId, positionPtrId);
+            if (!position) return false;
+            auto* x = builder.AddCompositeExtract(target.floatTypeId, position->result_id(), {0});
+            auto* y = builder.AddCompositeExtract(target.floatTypeId, position->result_id(), {1});
+            auto* z = builder.AddCompositeExtract(target.floatTypeId, position->result_id(), {2});
+            auto* w = builder.AddCompositeExtract(target.floatTypeId, position->result_id(), {3});
+            if (!x || !y || !z || !w) return false;
+
+            if (!doYFlip && !doZRemap) return false;
+
+            uint32_t yValueId = y->result_id();
+            if (doYFlip) {
+                auto* negY = builder.AddUnaryOp(target.floatTypeId, spv::Op::OpFNegate, y->result_id());
+                if (!negY) return false;
+                yValueId = negY->result_id();
+            }
+
+            uint32_t zValueId = z->result_id();
+            if (doZRemap) {
+                auto* zPlusW = builder.AddBinaryOp(target.floatTypeId, spv::Op::OpFAdd, z->result_id(), w->result_id());
+                if (!zPlusW) return false;
+                auto* mappedZ =
+                    builder.AddBinaryOp(target.floatTypeId, spv::Op::OpFMul, zPlusW->result_id(), halfConstId);
+                if (!mappedZ) return false;
+                zValueId = mappedZ->result_id();
+            }
+
+            auto* fixedPosition = builder.AddCompositeConstruct(target.vectorTypeId,
+                                                                {x->result_id(), yValueId, zValueId, w->result_id()});
+            if (!fixedPosition) return false;
+
+            return builder.AddStore(positionPtrId, fixedPosition->result_id()) != nullptr;
+        }
+
+        class GlToVulkanPositionFixPass final : public spvtools::opt::Pass {
+        public:
+            const char* name() const override { return "gl-to-vulkan-position-fix"; }
+            explicit GlToVulkanPositionFixPass(ShaderTransformFlags transformFlags)
+                : m_transformFlags(transformFlags) {}
+
+            Status Process() override {
+                if (!m_transformFlags) return Status::SuccessWithoutChange;
+                PositionTargetInfo target{};
+                if (!FindPositionTarget(context(), &target)) return Status::SuccessWithoutChange;
+
+                auto* floatType = context()->get_type_mgr()->GetType(target.floatTypeId);
+                if (!floatType) return Status::SuccessWithoutChange;
+
+                const uint32_t halfBits = std::bit_cast<uint32_t>(0.5f);
+                const auto* halfConst = context()->get_constant_mgr()->GetConstant(floatType, {halfBits});
+                auto* halfInst = context()->get_constant_mgr()->GetDefiningInstruction(halfConst);
+                if (!halfInst) return Status::SuccessWithoutChange;
+                const uint32_t halfConstId = halfInst->result_id();
+
+                const bool doYFlip = (m_transformFlags & ShaderTransformBit::PositionYFlip);
+                const bool doZRemap = (m_transformFlags & ShaderTransformBit::PositionZRemap);
+
+                bool modified = false;
+                for (auto& entryPoint : get_module()->entry_points()) {
+                    if (entryPoint.opcode() != spv::Op::OpEntryPoint) continue;
+                    if (entryPoint.NumInOperands() < 2) continue;
+
+                    const auto model = static_cast<spv::ExecutionModel>(entryPoint.GetSingleWordInOperand(0));
+                    if (model != spv::ExecutionModel::Vertex && model != spv::ExecutionModel::TessellationEvaluation &&
+                        model != spv::ExecutionModel::Geometry) {
+                        continue;
+                    }
+
+                    auto* function = context()->GetFunction(entryPoint.GetSingleWordInOperand(1));
+                    if (!function) continue;
+
+                    for (auto& bb : *function) {
+                        for (auto instIter = bb.begin(); instIter != bb.end(); ++instIter) {
+                            auto* inst = &*instIter;
+                            const bool needsFixup =
+                                (model == spv::ExecutionModel::Geometry && inst->opcode() == spv::Op::OpEmitVertex) ||
+                                (model != spv::ExecutionModel::Geometry && inst->opcode() == spv::Op::OpReturn);
+                            if (!needsFixup) continue;
+
+                            modified |= InsertPositionFixup(context(), inst, target, halfConstId, doYFlip, doZRemap);
+                        }
+                    }
+                }
+
+                if (!modified) return Status::SuccessWithoutChange;
+                context()->InvalidateAnalysesExceptFor(spvtools::opt::IRContext::kAnalysisDefUse |
+                                                       spvtools::opt::IRContext::kAnalysisInstrToBlockMapping);
+                return Status::SuccessWithChange;
+            }
+
+        private:
+            ShaderTransformFlags m_transformFlags;
+        };
+
+        spvtools::Optimizer::PassToken CreateGlToVulkanPositionFixPass(ShaderTransformFlags transformFlags) {
+            return spvtools::Optimizer::PassToken(MakeUnique<GlToVulkanPositionFixPass>(transformFlags));
+        }
+
+        bool TransformSpirvForVulkanPositionFix(const Vector<Uint32>& input, Vector<Uint32>& output,
+                                                ShaderTransformFlags transformFlags) {
+            if (input.empty()) {
+                output.clear();
+                return true;
+            }
+
+            if (!transformFlags) {
+                output = input;
+                return true;
+            }
+
+            spvtools::Optimizer optimizer(SPV_ENV_VULKAN_1_3);
+            spvtools::OptimizerOptions options;
+            options.set_run_validator(false);
+            optimizer.RegisterPass(CreateGlToVulkanPositionFixPass(transformFlags));
+
+            const bool success = optimizer.Run(input.data(), input.size(), &output, options);
+            if (!success) {
+                MGLOG_E("Vulkan: failed to run GL->Vulkan position fix pass");
+                output = input;
+            }
+            return success;
+        }
+
+        ShaderStage PickClipFixupStage(const Vector<SharedPtr<ShaderObject>>& shaders) {
+            bool hasGeometry = false;
+            bool hasTessEval = false;
+            bool hasVertex = false;
+
+            for (const auto& shader : shaders) {
+                if (!shader) continue;
+                const auto stage = shader->GetShaderStage();
+                hasGeometry |= (stage == ShaderStage::Geometry);
+                hasTessEval |= (stage == ShaderStage::TessEval);
+                hasVertex |= (stage == ShaderStage::Vertex);
+            }
+
+            if (hasGeometry) return ShaderStage::Geometry;
+            if (hasTessEval) return ShaderStage::TessEval;
+            if (hasVertex) return ShaderStage::Vertex;
+            return ShaderStage::Unknown;
+        }
+    } // namespace
+
    ProgramManager::~ProgramManager() {
        for (auto& [_, stages] : m_cache) {
            DestroyStages(stages);
@@ -16,7 +305,7 @@ namespace MobileGL::MG_Backend::DirectVulkan::VkManager {
        m_cache.clear();
    }

-    ProgramManager::HashType ProgramManager::ComputeSpvHash(MG_State::GLState::ProgramObject* program) const {
+    ProgramManager::HashType ProgramManager::ComputeSourceSpvHash(MG_State::GLState::ProgramObject* program) const {
        if (!program) return 0;
        XXH64_state_t* state = XXH64_createState();
        XXH64_reset(state, 0xC0FFEEu);
@@ -30,6 +319,60 @@ namespace MobileGL::MG_Backend::DirectVulkan::VkManager {
        return hash;
    }

+    ProgramManager::HashType ProgramManager::ComputeSpvHash(const Vector<Vector<Uint32>>& spirvs) const {
+        XXH64_state_t* state = XXH64_createState();
+        XXH64_reset(state, 0xC0FFEEu);
+        for (const auto& spv : spirvs) {
+            if (spv.empty()) continue;
+            XXH64_update(state, spv.data(), spv.size() * sizeof(Uint32));
+        }
+        HashType hash = XXH64_digest(state);
+        XXH64_freeState(state);
+        return hash;
+    }
+
+    void ProgramManager::BuildPipelineSpirvModules(MG_State::GLState::ProgramObject* program,
+                                                   Vector<Vector<Uint32>>& outSpirvs,
+                                                   ShaderTransformFlags transformFlags) const {
+        outSpirvs.clear();
+        if (!program) return;
+
+        auto& spirvs = program->GetGeneratedSpirv();
+        auto& shaders = program->GetAttachedShaders();
+        const ShaderStage fixupStage = PickClipFixupStage(shaders);
+
+        outSpirvs.reserve(spirvs.size());
+        for (SizeT i = 0; i < spirvs.size(); ++i) {
+            Vector<Uint32> module = spirvs[i];
+
+            ShaderStage stage = ShaderStage::Unknown;
+            if (i < shaders.size() && shaders[i]) stage = shaders[i]->GetShaderStage();
+
+            if (!module.empty() && fixupStage != ShaderStage::Unknown && stage == fixupStage) {
+                Vector<Uint32> transformed;
+                TransformSpirvForVulkanPositionFix(module, transformed, transformFlags);
+                module = Move(transformed);
+            }
+            outSpirvs.push_back(Move(module));
+        }
+    }
+
+    ProgramManager::HashType ProgramManager::ComputeSpvHash(MG_State::GLState::ProgramObject* program,
+                                                            ShaderTransformFlags transformFlags) const {
+        Vector<Vector<Uint32>> spirvs;
+        BuildPipelineSpirvModules(program, spirvs, transformFlags);
+        return ComputeSpvHash(spirvs);
+    }
+
+    ProgramManager::HashType ProgramManager::ComputeProgramHash(MG_State::GLState::ProgramObject* program,
+                                                                ShaderTransformFlags transformFlags) const {
+        if (!program) return 0;
+        const HashType sourceHash = ComputeSourceSpvHash(program);
+        auto it = m_cache.find(program);
+        if (it != m_cache.end() && it->second.sourceHash == sourceHash) return it->second.hash;
+        return ComputeSpvHash(program, transformFlags);
+    }
+
    VkShaderStageFlagBits ProgramManager::ToVkStage(ShaderStage stage) const {
        switch (stage) {
        case ShaderStage::Vertex:
@@ -57,21 +400,24 @@ namespace MobileGL::MG_Backend::DirectVulkan::VkManager {
        }
        stages.modules.clear();
        stages.stages.clear();
+        stages.sourceHash = 0;
        stages.hash = 0;
    }

    Vector<VkPipelineShaderStageCreateInfo>& ProgramManager::CreatePipelineShaderStages(
-        MG_State::GLState::ProgramObject* program) {
+        MG_State::GLState::ProgramObject* program, ShaderTransformFlags transformFlags) {
        auto& entry = m_cache[program];
-        HashType newHash = ComputeSpvHash(program);
-        if (!entry.stages.empty() && entry.hash == newHash) return entry.stages;
+        HashType sourceHash = ComputeSourceSpvHash(program);
+        if (!entry.stages.empty() && entry.sourceHash == sourceHash) return entry.stages;

        DestroyStages(entry);
-        entry.hash = newHash;
+        entry.sourceHash = sourceHash;

        if (!program) return entry.stages;

-        auto& spirvs = program->GetGeneratedSpirv();
+        Vector<Vector<Uint32>> spirvs;
+        BuildPipelineSpirvModules(program, spirvs, transformFlags);
+        entry.hash = ComputeSpvHash(spirvs);
        auto& shaders = program->GetAttachedShaders();

        for (SizeT i = 0; i < spirvs.size(); ++i) {
@@ -87,7 +433,7 @@ namespace MobileGL::MG_Backend::DirectVulkan::VkManager {

            VkPipelineShaderStageCreateInfo stage{VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO};
            ShaderStage shaderStage = ShaderStage::Unknown;
-            if (i < shaders.size()) shaderStage = shaders[i]->GetShaderStage();
+            if (i < shaders.size() && shaders[i]) shaderStage = shaders[i]->GetShaderStage();
            stage.stage = ToVkStage(shaderStage);
            stage.module = module;
            stage.pName = "main";
@@ -13,6 +13,13 @@
 #include "MG_State/GLState/ProgramState/ProgramObject.h"

 namespace MobileGL::MG_Backend::DirectVulkan::VkManager {
+    enum class ShaderTransformBit : Uint {
+        None = 0,
+        PositionYFlip = 1 << 0,
+        PositionZRemap = 1 << 1,
+    };
+    using ShaderTransformFlags = Flags<ShaderTransformBit>;
+
    class ProgramManager {
    public:
        using HashType = Uint64;
@@ -24,17 +31,25 @@ namespace MobileGL::MG_Backend::DirectVulkan::VkManager {
        ProgramManager& operator=(const ProgramManager&) = delete;

        Vector<VkPipelineShaderStageCreateInfo>& CreatePipelineShaderStages(
-            MG_State::GLState::ProgramObject* program);
+            MG_State::GLState::ProgramObject* program,
+            ShaderTransformFlags transformFlags = ShaderTransformBit::PositionZRemap);
+        HashType ComputeProgramHash(MG_State::GLState::ProgramObject* program,
+                                    ShaderTransformFlags transformFlags = ShaderTransformBit::PositionZRemap) const;

    private:
        struct ProgramStages {
+            HashType sourceHash = 0;
            HashType hash = 0;
            Vector<VkPipelineShaderStageCreateInfo> stages;
            Vector<VkShaderModule> modules;
        };

        void DestroyStages(ProgramStages& stages);
-        HashType ComputeSpvHash(MG_State::GLState::ProgramObject* program) const;
+        HashType ComputeSourceSpvHash(MG_State::GLState::ProgramObject* program) const;
+        HashType ComputeSpvHash(MG_State::GLState::ProgramObject* program, ShaderTransformFlags transformFlags) const;
+        HashType ComputeSpvHash(const Vector<Vector<Uint32>>& spirvs) const;
+        void BuildPipelineSpirvModules(MG_State::GLState::ProgramObject* program, Vector<Vector<Uint32>>& outSpirvs,
+                                       ShaderTransformFlags transformFlags) const;
        VkShaderStageFlagBits ToVkStage(ShaderStage stage) const;

        VulkanContext& m_ctx;
@@ -20,7 +20,7 @@
 #include <xxhash.h>

 #define DEBUG_TRACE_POINT() MGLOG_D("DV TmpImpl Trace: %s:%d", __func__, __LINE__)
-namespace MobileGL::Backend::DirectVulkan::TmpImpl {
+namespace MobileGL::MG_Backend::DirectVulkan::TmpImpl {
    namespace {
        class PendingClearInfo;
        void BeginRenderPass(GLbitfield clearMask, const PendingClearInfo* clearInfo);
@@ -411,7 +411,7 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
                    if (view != VK_NULL_HANDLE) trash.mipViews.push_back(view);
                }
            }
-            frame.TrashImages.push_back(std::move(trash));
+            frame.TrashImages.push_back(Move(trash));

            res.view = VK_NULL_HANDLE;
            res.image = VK_NULL_HANDLE;
@@ -1434,8 +1434,8 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {

            DestroyBackendFramebuffer(backend);

-            backend.attachments = std::move(newAttachments);
-            backend.attachmentIndex = std::move(newIndex);
+            backend.attachments = Move(newAttachments);
+            backend.attachmentIndex = Move(newIndex);
            backend.extent = extent;
            backend.colorAttachmentCount = nEffectiveBuffers;
            backend.hasDepth = useDepthAttachment;
@@ -2119,6 +2119,16 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
            Memset(g.nullUbo.mapped, 0, 256);
        }

+        VkManager::ShaderTransformFlags GetShaderTransformFlags() {
+            VkManager::ShaderTransformFlags flags = VkManager::ShaderTransformBit::PositionZRemap;
+            const auto& currentDrawFBO =
+                MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Draw).GetBoundObject();
+            if (currentDrawFBO == MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo->defaultFBO) {
+                flags |= VkManager::ShaderTransformBit::PositionYFlip;
+            }
+            return flags;
+        }
+
        ProgramResource& GetProgramResource(ProgramObject* program) {
            auto& slot = g.programs[program];
            Uint64 newHash = ComputeProgramSpvHash(program);
@@ -2131,10 +2141,11 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {

            slot.program = program;
            slot.spvHash = newHash;
-            slot.programHash = newHash;

+            VkManager::ShaderTransformFlags transformFlags = GetShaderTransformFlags();
            if (!g.programMgr) g.programMgr = MakeUnique<DV::ProgramManager>(*g.ctx);
-            slot.shaderStages = &g.programMgr->CreatePipelineShaderStages(program);
+            slot.shaderStages = &g.programMgr->CreatePipelineShaderStages(program, transformFlags);
+            slot.programHash = g.programMgr->ComputeProgramHash(program, transformFlags);

            ReflectProgramResources(program, slot);

@@ -2239,7 +2250,7 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
                                       VkRenderPass renderPass, Uint32 colorAttachmentCount, Bool hasDepth,
                                       Uint64 renderPassKey) {
            if (!g.programMgr) g.programMgr = MakeUnique<DV::ProgramManager>(*g.ctx);
-            prog.shaderStages = &g.programMgr->CreatePipelineShaderStages(prog.program);
+            prog.shaderStages = &g.programMgr->CreatePipelineShaderStages(prog.program, GetShaderTransformFlags());
            if (!prog.shaderStages || prog.shaderStages->empty()) {
                MGLOG_E("Vulkan: shader stages are empty for program %u (hash=%llu)", prog.program->GetExternalIndex(),
                        static_cast<unsigned long long>(prog.programHash));
@@ -2274,8 +2285,8 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
            key.depthTest = rs.DepthTestEnabled ? 1u : 0u;
            key.depthWrite = rs.DepthMask ? 1u : 0u;
            key.depthFunc = static_cast<Uint32>(rs.DepthFunc);
-            key.cullEnable = rs.CullFaceEnabled ? 1u : 0u;
-            key.cullMode = static_cast<Uint32>(rs.CullFaceModeSetting);
+            key.cullEnable = 0;
+            key.cullMode = 0;
            key.colorMask = (rs.ColorMask.x() ? 1u : 0u) | (rs.ColorMask.y() ? 2u : 0u) | (rs.ColorMask.z() ? 4u : 0u) |
                            (rs.ColorMask.w() ? 8u : 0u);
            key.srcRGB = static_cast<Uint32>(rs.BlendStates[0].SrcFactorRGB);
@@ -2337,7 +2348,7 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
            DEBUG_TRACE_POINT();
            VkPipelineRasterizationStateCreateInfo raster{VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO};
            raster.polygonMode = VK_POLYGON_MODE_FILL;
-            raster.cullMode = rs.CullFaceEnabled ? ToVkCullMode(rs.CullFaceModeSetting) : VK_CULL_MODE_NONE;
+            raster.cullMode = VK_CULL_MODE_NONE;
            raster.frontFace = VK_FRONT_FACE_CLOCKWISE;
            raster.lineWidth = 1.0f;

@@ -2703,7 +2714,7 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
                VK_VERIFY(vkCreateFramebuffer(g.ctx->GetDevice(), &fbci, nullptr, &fb), "vkCreateFramebuffer");
                fbs.push_back(fb);
            }
-            g.swapchain->SetFramebuffers(std::move(fbs));
+            g.swapchain->SetFramebuffers(Move(fbs));
        }

        void DestroyFrameResources() {
@@ -2722,7 +2733,7 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
            for (Uint32 i = 0; i < frames; ++i) {
                auto fr = MakeUnique<DV::FrameContext>();
                fr->Initialize(*g.ctx, g.commandPool);
-                g.frames.push_back(std::move(fr));
+                g.frames.push_back(Move(fr));
            }
            g.frameDescriptorPools.clear();
            g.frameDescriptorPools.resize(frames);
@@ -3445,4 +3456,4 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
        }
        clearInfo.mask |= validMask;
    }
-} // namespace MobileGL::Backend::DirectVulkan::TmpImpl
+} // namespace MobileGL::MG_Backend::DirectVulkan::TmpImpl
@@ -9,7 +9,7 @@
 #pragma once
 #include <Includes.h>

-namespace MobileGL::Backend::DirectVulkan::TmpImpl {
+namespace MobileGL::MG_Backend::DirectVulkan::TmpImpl {
    void Present();
    void FrameBegin();
    void InitVulkan(ANativeWindow* window);
@@ -50,4 +50,4 @@ namespace MobileGL::Backend::DirectVulkan::TmpImpl {
                           GLsizei height);
    void GenerateMipmap(GLenum target);
    void Present();
-} // namespace MobileGL::Backend::DirectVulkan::TmpImpl
+} // namespace MobileGL::MG_Backend::DirectVulkan::TmpImpl
@@ -89,7 +89,7 @@ namespace MobileGL {
        }

        void CreateWindowSurfaceForVulkan(NativeWindowType window) {
-            MobileGL::Backend::DirectVulkan::TmpImpl::InitVulkan(window);
+            MobileGL::MG_Backend::DirectVulkan::TmpImpl::InitVulkan(window);
            return;
            MG_Backend::DirectVulkan::pVulkanRenderer = MakeUnique<MG_Backend::DirectVulkan::VulkanRenderer>(window);
            MG_Backend::DirectVulkan::pVulkanRenderer->Initialize();
@@ -105,7 +105,7 @@ namespace MobileGL {
        }

        EGLBoolean SwapBuffers(EGLDisplay dpy, EGLSurface draw) {
-            MobileGL::Backend::DirectVulkan::TmpImpl::Present();
+            MobileGL::MG_Backend::DirectVulkan::TmpImpl::Present();
            return EGL_TRUE;
            if (!MG_Backend::DirectVulkan::pVulkanRenderer) {
                MGLOG_E("EGLForVulkan::SwapBuffers called but VulkanRenderer is null");