#include "fixtures/RHITestFixture.h"
#include "XCEngine/RHI/RHICommandList.h"
#include "XCEngine/RHI/RHITexture.h"
#include "XCEngine/RHI/RHIBuffer.h"
#include "XCEngine/RHI/RHIShader.h"
#include "XCEngine/RHI/RHIPipelineState.h"
#include "XCEngine/RHI/RHIRenderPass.h"
#include "XCEngine/RHI/RHIFramebuffer.h"
#include "XCEngine/RHI/OpenGL/OpenGLDevice.h"
#include "XCEngine/RHI/OpenGL/OpenGLResourceView.h"
#include <glad/glad.h>
#include <vector>

using namespace XCEngine::RHI;

TEST_P(RHITestFixture, CommandList_Reset_Close) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_SetPrimitiveTopology) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetPrimitiveTopology(PrimitiveTopology::TriangleList);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_SetViewport) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    Viewport vp = { 0.0f, 0.0f, 800.0f, 600.0f, 0.0f, 1.0f };

    cmdList->Reset();
    cmdList->SetViewport(vp);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_SetViewports) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    Viewport viewports[2] = {
        { 0.0f, 0.0f, 400.0f, 300.0f, 0.0f, 1.0f },
        { 400.0f, 300.0f, 400.0f, 300.0f, 0.0f, 1.0f }
    };

    cmdList->Reset();
    cmdList->SetViewports(2, viewports);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_SetScissorRect) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    Rect rect = { 0, 0, 800, 600 };

    cmdList->Reset();
    cmdList->SetScissorRect(rect);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_SetScissorRects_Multiple) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    Rect rects[2] = {
        { 0, 0, 400, 300 },
        { 400, 300, 800, 600 }
    };

    cmdList->Reset();
    cmdList->SetScissorRects(2, rects);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_Draw) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetPrimitiveTopology(PrimitiveTopology::TriangleList);
    cmdList->Draw(3);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_DrawIndexed) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetPrimitiveTopology(PrimitiveTopology::TriangleList);
    cmdList->DrawIndexed(6);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_SetVertexBuffers_WithRealView) {
    BufferDesc bufferDesc = {};
    bufferDesc.size = 256;
    bufferDesc.stride = 32;
    bufferDesc.bufferType = static_cast<uint32_t>(BufferType::Vertex);

    RHIBuffer* buffer = GetDevice()->CreateBuffer(bufferDesc);
    ASSERT_NE(buffer, nullptr);

    ResourceViewDesc viewDesc = {};
    viewDesc.dimension = ResourceViewDimension::Buffer;
    viewDesc.structureByteStride = 32;
    RHIResourceView* vbv = GetDevice()->CreateVertexBufferView(buffer, viewDesc);
    ASSERT_NE(vbv, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    uint64_t offsets[] = { 0 };
    uint32_t strides[] = { 32 };

    cmdList->Reset();
    cmdList->SetVertexBuffers(0, 1, &vbv, offsets, strides);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    vbv->Shutdown();
    delete vbv;
    buffer->Shutdown();
    delete buffer;
}

TEST_P(RHITestFixture, CommandList_SetIndexBuffer_WithRealView) {
    BufferDesc bufferDesc = {};
    bufferDesc.size = 256;
    bufferDesc.stride = sizeof(uint32_t);
    bufferDesc.bufferType = static_cast<uint32_t>(BufferType::Index);

    RHIBuffer* buffer = GetDevice()->CreateBuffer(bufferDesc);
    ASSERT_NE(buffer, nullptr);

    ResourceViewDesc viewDesc = {};
    viewDesc.dimension = ResourceViewDimension::Buffer;
    viewDesc.format = static_cast<uint32_t>(Format::R32_UInt);
    RHIResourceView* ibv = GetDevice()->CreateIndexBufferView(buffer, viewDesc);
    ASSERT_NE(ibv, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetIndexBuffer(ibv, 0);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    ibv->Shutdown();
    delete ibv;
    buffer->Shutdown();
    delete buffer;
}

TEST_P(RHITestFixture, CommandList_SetStencilRef) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetStencilRef(0);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, CommandList_SetBlendFactor) {
    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    float blendFactor[4] = { 0.5f, 0.5f, 0.5f, 1.0f };

    cmdList->Reset();
    cmdList->SetBlendFactor(blendFactor);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
}



TEST_P(RHITestFixture, CommandList_ClearRenderTarget_WithRealView) {
    TextureDesc texDesc = {};
    texDesc.width = 256;
    texDesc.height = 256;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    RHITexture* texture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(texture, nullptr);

    ResourceViewDesc viewDesc = {};
    viewDesc.format = texDesc.format;
    RHIResourceView* rtv = GetDevice()->CreateRenderTargetView(texture, viewDesc);
    ASSERT_NE(rtv, nullptr);

    float color[4] = { 1.0f, 0.0f, 0.0f, 1.0f };

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->ClearRenderTarget(rtv, color);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    delete rtv;
    texture->Shutdown();
    delete texture;
}

TEST_P(RHITestFixture, CommandList_ClearDepthStencil_WithRealView) {
    TextureDesc texDesc = {};
    texDesc.width = 256;
    texDesc.height = 256;
    texDesc.format = static_cast<uint32_t>(Format::D24_UNorm_S8_UInt);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    RHITexture* texture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(texture, nullptr);

    RHIResourceView* dsv = GetDevice()->CreateDepthStencilView(texture, {});
    ASSERT_NE(dsv, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->ClearDepthStencil(dsv, 1.0f, 0);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    delete dsv;
    texture->Shutdown();
    delete texture;
}

TEST_P(RHITestFixture, CommandList_TransitionBarrier_WithRealResource) {
    TextureDesc texDesc = {};
    texDesc.width = 256;
    texDesc.height = 256;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    RHITexture* texture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(texture, nullptr);

    RHIResourceView* srv = GetDevice()->CreateShaderResourceView(texture, {});
    ASSERT_NE(srv, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->TransitionBarrier(srv, ResourceStates::Common, ResourceStates::PixelShaderResource);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    delete srv;
    texture->Shutdown();
    delete texture;
}

TEST_P(RHITestFixture, CommandList_SetRenderTargets_WithRealViews) {
    TextureDesc texDesc = {};
    texDesc.width = 256;
    texDesc.height = 256;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    RHITexture* texture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(texture, nullptr);

    RHIResourceView* rtv = GetDevice()->CreateRenderTargetView(texture, {});
    ASSERT_NE(rtv, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetRenderTargets(1, &rtv, nullptr);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    delete rtv;
    texture->Shutdown();
    delete texture;
}

TEST_P(RHITestFixture, CommandList_SetRenderTargets_BindsColorAndDepthAttachmentsOnOpenGL) {
    if (GetBackendType() != RHIType::OpenGL) {
        GTEST_SKIP() << "OpenGL-specific framebuffer attachment verification";
    }

    TextureDesc colorDesc = {};
    colorDesc.width = 128;
    colorDesc.height = 128;
    colorDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    colorDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);

    TextureDesc depthDesc = {};
    depthDesc.width = 128;
    depthDesc.height = 128;
    depthDesc.format = static_cast<uint32_t>(Format::D24_UNorm_S8_UInt);
    depthDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);

    RHITexture* colorTexture = GetDevice()->CreateTexture(colorDesc);
    RHITexture* depthTexture = GetDevice()->CreateTexture(depthDesc);
    ASSERT_NE(colorTexture, nullptr);
    ASSERT_NE(depthTexture, nullptr);

    ResourceViewDesc colorViewDesc = {};
    colorViewDesc.format = colorDesc.format;
    RHIResourceView* rtv = GetDevice()->CreateRenderTargetView(colorTexture, colorViewDesc);

    ResourceViewDesc depthViewDesc = {};
    depthViewDesc.format = depthDesc.format;
    RHIResourceView* dsv = GetDevice()->CreateDepthStencilView(depthTexture, depthViewDesc);
    ASSERT_NE(rtv, nullptr);
    ASSERT_NE(dsv, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetRenderTargets(1, &rtv, dsv);

    GLint framebuffer = 0;
    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &framebuffer);
    EXPECT_NE(framebuffer, 0);
    EXPECT_EQ(glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);

    GLint colorAttachment = 0;
    glGetFramebufferAttachmentParameteriv(
        GL_DRAW_FRAMEBUFFER,
        GL_COLOR_ATTACHMENT0,
        GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
        &colorAttachment);
    EXPECT_EQ(static_cast<GLuint>(colorAttachment), static_cast<OpenGLResourceView*>(rtv)->GetTexture());

    GLint depthAttachment = 0;
    glGetFramebufferAttachmentParameteriv(
        GL_DRAW_FRAMEBUFFER,
        GL_DEPTH_ATTACHMENT,
        GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
        &depthAttachment);
    EXPECT_EQ(static_cast<GLuint>(depthAttachment), static_cast<OpenGLResourceView*>(dsv)->GetTexture());

    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    delete dsv;
    delete rtv;
    depthTexture->Shutdown();
    delete depthTexture;
    colorTexture->Shutdown();
    delete colorTexture;
}

TEST_P(RHITestFixture, CommandList_SetRenderTargets_BindsMultipleColorAttachmentsOnOpenGL) {
    if (GetBackendType() != RHIType::OpenGL) {
        GTEST_SKIP() << "OpenGL-specific multiple render target verification";
    }

    TextureDesc texDesc = {};
    texDesc.width = 128;
    texDesc.height = 128;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);

    RHITexture* texture0 = GetDevice()->CreateTexture(texDesc);
    RHITexture* texture1 = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(texture0, nullptr);
    ASSERT_NE(texture1, nullptr);

    ResourceViewDesc viewDesc = {};
    viewDesc.format = texDesc.format;
    RHIResourceView* rtv0 = GetDevice()->CreateRenderTargetView(texture0, viewDesc);
    RHIResourceView* rtv1 = GetDevice()->CreateRenderTargetView(texture1, viewDesc);
    ASSERT_NE(rtv0, nullptr);
    ASSERT_NE(rtv1, nullptr);

    RHIResourceView* rtvs[] = { rtv0, rtv1 };

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetRenderTargets(2, rtvs, nullptr);

    GLint framebuffer = 0;
    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &framebuffer);
    EXPECT_NE(framebuffer, 0);
    EXPECT_EQ(glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);

    GLint colorAttachment0 = 0;
    glGetFramebufferAttachmentParameteriv(
        GL_DRAW_FRAMEBUFFER,
        GL_COLOR_ATTACHMENT0,
        GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
        &colorAttachment0);
    EXPECT_EQ(static_cast<GLuint>(colorAttachment0), static_cast<OpenGLResourceView*>(rtv0)->GetTexture());

    GLint colorAttachment1 = 0;
    glGetFramebufferAttachmentParameteriv(
        GL_DRAW_FRAMEBUFFER,
        GL_COLOR_ATTACHMENT1,
        GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
        &colorAttachment1);
    EXPECT_EQ(static_cast<GLuint>(colorAttachment1), static_cast<OpenGLResourceView*>(rtv1)->GetTexture());

    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    delete rtv1;
    delete rtv0;
    texture1->Shutdown();
    delete texture1;
    texture0->Shutdown();
    delete texture0;
}

TEST_P(RHITestFixture, CommandList_CopyResource_WithRealResources) {
    TextureDesc texDesc = {};
    texDesc.width = 256;
    texDesc.height = 256;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    
    RHITexture* srcTexture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(srcTexture, nullptr);
    
    RHITexture* dstTexture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(dstTexture, nullptr);

    RHIResourceView* srcView = GetDevice()->CreateShaderResourceView(srcTexture, {});
    RHIResourceView* dstView = GetDevice()->CreateShaderResourceView(dstTexture, {});

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->CopyResource(dstView, srcView);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    delete srcView;
    delete dstView;
    srcTexture->Shutdown();
    delete srcTexture;
    dstTexture->Shutdown();
    delete dstTexture;
}

TEST_P(RHITestFixture, CommandList_CopyResource_UsesActualTextureDimensionsOnOpenGL) {
    if (GetBackendType() != RHIType::OpenGL) {
        GTEST_SKIP() << "OpenGL-specific copy verification";
    }

    constexpr uint32_t kWidth = 64;
    constexpr uint32_t kHeight = 32;

    std::vector<uint8_t> srcPixels(kWidth * kHeight * 4);
    for (uint32_t y = 0; y < kHeight; ++y) {
        for (uint32_t x = 0; x < kWidth; ++x) {
            const size_t index = static_cast<size_t>((y * kWidth + x) * 4);
            srcPixels[index + 0] = static_cast<uint8_t>(x * 3);
            srcPixels[index + 1] = static_cast<uint8_t>(y * 5);
            srcPixels[index + 2] = static_cast<uint8_t>((x + y) * 7);
            srcPixels[index + 3] = 255;
        }
    }

    TextureDesc texDesc = {};
    texDesc.width = kWidth;
    texDesc.height = kHeight;
    texDesc.depth = 1;
    texDesc.mipLevels = 1;
    texDesc.arraySize = 1;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    texDesc.sampleCount = 1;
    texDesc.sampleQuality = 0;

    RHITexture* srcTexture = GetDevice()->CreateTexture(texDesc, srcPixels.data(), srcPixels.size(), kWidth * 4);
    ASSERT_NE(srcTexture, nullptr);
    RHITexture* dstTexture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(dstTexture, nullptr);

    RHIResourceView* srcView = GetDevice()->CreateShaderResourceView(srcTexture, {});
    RHIResourceView* dstView = GetDevice()->CreateShaderResourceView(dstTexture, {});
    ASSERT_NE(srcView, nullptr);
    ASSERT_NE(dstView, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->CopyResource(dstView, srcView);
    glFinish();
    cmdList->Close();

    std::vector<uint8_t> dstPixels(kWidth * kHeight * 4, 0);
    const GLuint dstTextureId = static_cast<OpenGLResourceView*>(dstView)->GetTexture();
    glBindTexture(GL_TEXTURE_2D, dstTextureId);
    glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, dstPixels.data());
    glBindTexture(GL_TEXTURE_2D, 0);

    EXPECT_EQ(dstPixels, srcPixels);

    cmdList->Shutdown();
    delete cmdList;
    delete srcView;
    delete dstView;
    srcTexture->Shutdown();
    delete srcTexture;
    dstTexture->Shutdown();
    delete dstTexture;
}

TEST_P(RHITestFixture, CommandList_BeginEndRenderPass_Basic) {
    AttachmentDesc colorDesc = {};
    colorDesc.format = Format::R8G8B8A8_UNorm;
    colorDesc.loadOp = LoadAction::Clear;
    colorDesc.storeOp = StoreAction::Store;
    
    RHIRenderPass* renderPass = GetDevice()->CreateRenderPass(1, &colorDesc, nullptr);
    ASSERT_NE(renderPass, nullptr);

    TextureDesc texDesc = {};
    texDesc.width = 256;
    texDesc.height = 256;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    RHITexture* texture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(texture, nullptr);

    RHIResourceView* rtv = GetDevice()->CreateRenderTargetView(texture, {});
    ASSERT_NE(rtv, nullptr);

    RHIFramebuffer* fb = GetDevice()->CreateFramebuffer(renderPass, 256, 256, 1, &rtv, nullptr);
    ASSERT_NE(fb, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    Rect renderArea = { 0, 0, 256, 256 };
    ClearValue clearValue = { { 0.0f, 0.0f, 0.0f, 1.0f }, 1.0f, 0 };

    cmdList->Reset();
    cmdList->BeginRenderPass(renderPass, fb, renderArea, 1, &clearValue);
    cmdList->EndRenderPass();
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    fb->Shutdown();
    delete fb;
    delete rtv;
    texture->Shutdown();
    delete texture;
    renderPass->Shutdown();
    delete renderPass;
}

TEST_P(RHITestFixture, CommandList_BeginEndRenderPass_WithClear) {
    AttachmentDesc colorDesc = {};
    colorDesc.format = Format::R8G8B8A8_UNorm;
    colorDesc.loadOp = LoadAction::Clear;
    colorDesc.storeOp = StoreAction::Store;
    
    RHIRenderPass* renderPass = GetDevice()->CreateRenderPass(1, &colorDesc, nullptr);
    ASSERT_NE(renderPass, nullptr);

    TextureDesc texDesc = {};
    texDesc.width = 256;
    texDesc.height = 256;
    texDesc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    texDesc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    RHITexture* texture = GetDevice()->CreateTexture(texDesc);
    ASSERT_NE(texture, nullptr);

    RHIResourceView* rtv = GetDevice()->CreateRenderTargetView(texture, {});
    ASSERT_NE(rtv, nullptr);

    RHIFramebuffer* fb = GetDevice()->CreateFramebuffer(renderPass, 256, 256, 1, &rtv, nullptr);
    ASSERT_NE(fb, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    Rect renderArea = { 0, 0, 256, 256 };
    ClearValue clearValue = { { 1.0f, 0.0f, 0.0f, 1.0f }, 1.0f, 0 };

    cmdList->Reset();
    cmdList->BeginRenderPass(renderPass, fb, renderArea, 1, &clearValue);
    cmdList->EndRenderPass();
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    fb->Shutdown();
    delete fb;
    delete rtv;
    texture->Shutdown();
    delete texture;
    renderPass->Shutdown();
    delete renderPass;
}

TEST_P(RHITestFixture, CommandList_SetShader) {
    ShaderCompileDesc shaderDesc = {};
    if (GetBackendType() == RHIType::D3D12) {
        shaderDesc.fileName = L"tests/RHI/D3D12/integration/quad/Res/Shader/quad.hlsl";
        shaderDesc.entryPoint = L"MainVS";
        shaderDesc.profile = L"vs_5_0";
    } else {
        shaderDesc.sourceLanguage = ShaderLanguage::GLSL;
        static const char* vs = "#version 430\nin vec4 aPosition;\nvoid main() { gl_Position = aPosition; }";
        shaderDesc.source.assign(vs, vs + strlen(vs));
    }

    RHIShader* shader = GetDevice()->CreateShader(shaderDesc);
    if (shader == nullptr) {
        return;
    }

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Reset();
    cmdList->SetShader(shader);
    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    shader->Shutdown();
    delete shader;
}

TEST_P(RHITestFixture, CommandList_SetVertexBuffers_InterleavedInputLayoutUsesPipelineLayout) {
    if (GetBackendType() != RHIType::OpenGL) {
        GTEST_SKIP() << "OpenGL-specific vertex layout binding";
    }

    auto* openGLDevice = static_cast<OpenGLDevice*>(GetDevice());
    ASSERT_NE(openGLDevice, nullptr);
    ASSERT_TRUE(openGLDevice->MakeContextCurrent());

    GraphicsPipelineDesc pipelineDesc = {};
    pipelineDesc.renderTargetFormats[0] = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);

    InputElementDesc position = {};
    position.semanticName = "POSITION";
    position.semanticIndex = 0;
    position.format = static_cast<uint32_t>(Format::R32G32B32A32_Float);
    position.inputSlot = 0;
    position.alignedByteOffset = 0;
    pipelineDesc.inputLayout.elements.push_back(position);

    InputElementDesc color = {};
    color.semanticName = "COLOR";
    color.semanticIndex = 0;
    color.format = static_cast<uint32_t>(Format::R32G32B32A32_Float);
    color.inputSlot = 0;
    color.alignedByteOffset = sizeof(float) * 4;
    pipelineDesc.inputLayout.elements.push_back(color);

    static const char* vertexSource = R"(#version 430
layout(location = 0) in vec4 aPosition;
layout(location = 1) in vec4 aColor;
out vec4 vColor;
void main() {
    gl_Position = aPosition;
    vColor = aColor;
}
)";
    static const char* fragmentSource = R"(#version 430
in vec4 vColor;
layout(location = 0) out vec4 fragColor;
void main() {
    fragColor = vColor;
}
)";

    pipelineDesc.vertexShader.source.assign(vertexSource, vertexSource + strlen(vertexSource));
    pipelineDesc.vertexShader.sourceLanguage = ShaderLanguage::GLSL;
    pipelineDesc.vertexShader.profile = L"vs_4_30";

    pipelineDesc.fragmentShader.source.assign(fragmentSource, fragmentSource + strlen(fragmentSource));
    pipelineDesc.fragmentShader.sourceLanguage = ShaderLanguage::GLSL;
    pipelineDesc.fragmentShader.profile = L"fs_4_30";

    RHIPipelineState* pipelineState = GetDevice()->CreatePipelineState(pipelineDesc);
    ASSERT_NE(pipelineState, nullptr);

    BufferDesc bufferDesc = {};
    bufferDesc.size = sizeof(float) * 8 * 3;
    bufferDesc.stride = sizeof(float) * 8;
    bufferDesc.bufferType = static_cast<uint32_t>(BufferType::Vertex);

    RHIBuffer* buffer = GetDevice()->CreateBuffer(bufferDesc);
    ASSERT_NE(buffer, nullptr);

    ResourceViewDesc viewDesc = {};
    viewDesc.dimension = ResourceViewDimension::Buffer;
    viewDesc.structureByteStride = bufferDesc.stride;
    RHIResourceView* vbv = GetDevice()->CreateVertexBufferView(buffer, viewDesc);
    ASSERT_NE(vbv, nullptr);

    CommandListDesc cmdDesc = {};
    cmdDesc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);
    RHICommandList* cmdList = GetDevice()->CreateCommandList(cmdDesc);
    ASSERT_NE(cmdList, nullptr);

    RHIResourceView* views[] = { vbv };
    uint64_t offsets[] = { 0 };
    uint32_t strides[] = { bufferDesc.stride };

    cmdList->Reset();
    cmdList->SetPipelineState(pipelineState);
    cmdList->SetVertexBuffers(0, 1, views, offsets, strides);

    GLint enabled0 = 0;
    GLint enabled1 = 0;
    GLint size0 = 0;
    GLint size1 = 0;
    GLint stride0 = 0;
    GLint stride1 = 0;
    void* pointer0 = nullptr;
    void* pointer1 = nullptr;

    glGetVertexAttribiv(0, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &enabled0);
    glGetVertexAttribiv(1, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &enabled1);
    glGetVertexAttribiv(0, GL_VERTEX_ATTRIB_ARRAY_SIZE, &size0);
    glGetVertexAttribiv(1, GL_VERTEX_ATTRIB_ARRAY_SIZE, &size1);
    glGetVertexAttribiv(0, GL_VERTEX_ATTRIB_ARRAY_STRIDE, &stride0);
    glGetVertexAttribiv(1, GL_VERTEX_ATTRIB_ARRAY_STRIDE, &stride1);
    glGetVertexAttribPointerv(0, GL_VERTEX_ATTRIB_ARRAY_POINTER, &pointer0);
    glGetVertexAttribPointerv(1, GL_VERTEX_ATTRIB_ARRAY_POINTER, &pointer1);

    EXPECT_EQ(enabled0, GL_TRUE);
    EXPECT_EQ(enabled1, GL_TRUE);
    EXPECT_EQ(size0, 4);
    EXPECT_EQ(size1, 4);
    EXPECT_EQ(stride0, static_cast<GLint>(bufferDesc.stride));
    EXPECT_EQ(stride1, static_cast<GLint>(bufferDesc.stride));
    EXPECT_EQ(reinterpret_cast<uintptr_t>(pointer0), 0u);
    EXPECT_EQ(reinterpret_cast<uintptr_t>(pointer1), sizeof(float) * 4u);

    cmdList->Close();

    cmdList->Shutdown();
    delete cmdList;
    vbv->Shutdown();
    delete vbv;
    buffer->Shutdown();
    delete buffer;
    pipelineState->Shutdown();
    delete pipelineState;
}