Add pure RHI triangle integration test

tests/RHI/integration/CMakeLists.txt

@@ -5,3 +5,4 @@ find_package(GTest REQUIRED)
 enable_testing()
 
 add_subdirectory(minimal)
+add_subdirectory(triangle)

tests/RHI/integration/triangle/CMakeLists.txt

@@ -0,0 +1,56 @@
+cmake_minimum_required(VERSION 3.15)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+
+project(rhi_integration_triangle)
+
+set(ENGINE_ROOT_DIR ${CMAKE_SOURCE_DIR}/engine)
+set(PACKAGE_DIR ${CMAKE_SOURCE_DIR}/tests/opengl/package)
+
+get_filename_component(PROJECT_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../../.. ABSOLUTE)
+
+add_executable(rhi_integration_triangle
+    main.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/../fixtures/RHIIntegrationFixture.cpp
+    ${PACKAGE_DIR}/src/glad.c
+)
+
+target_include_directories(rhi_integration_triangle PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/../fixtures
+    ${ENGINE_ROOT_DIR}/include
+    ${PACKAGE_DIR}/include
+    ${PROJECT_ROOT_DIR}/engine/src
+)
+
+target_link_libraries(rhi_integration_triangle PRIVATE
+    d3d12
+    dxgi
+    d3dcompiler
+    winmm
+    opengl32
+    XCEngine
+    GTest::gtest
+)
+
+target_compile_definitions(rhi_integration_triangle PRIVATE
+    UNICODE
+    _UNICODE
+    XCENGINE_SUPPORT_OPENGL
+    XCENGINE_SUPPORT_D3D12
+)
+
+add_custom_command(TARGET rhi_integration_triangle POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        ${CMAKE_SOURCE_DIR}/tests/RHI/integration/compare_ppm.py
+        $<TARGET_FILE_DIR:rhi_integration_triangle>/
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        ${CMAKE_CURRENT_SOURCE_DIR}/GT.ppm
+        $<TARGET_FILE_DIR:rhi_integration_triangle>/GT.ppm
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        ${ENGINE_ROOT_DIR}/third_party/renderdoc/renderdoc.dll
+        $<TARGET_FILE_DIR:rhi_integration_triangle>/
+)
+
+include(GoogleTest)
+gtest_discover_tests(rhi_integration_triangle)

tests/RHI/integration/triangle/main.cpp

@@ -0,0 +1,286 @@
+#include <windows.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <gtest/gtest.h>
+
+#include "../fixtures/RHIIntegrationFixture.h"
+#include "XCEngine/Debug/ConsoleLogSink.h"
+#include "XCEngine/Debug/Logger.h"
+#include "XCEngine/RHI/RHIBuffer.h"
+#include "XCEngine/RHI/RHIPipelineState.h"
+#include "XCEngine/RHI/RHIResourceView.h"
+
+using namespace XCEngine::Debug;
+using namespace XCEngine::RHI;
+using namespace XCEngine::RHI::Integration;
+
+namespace {
+
+struct Vertex {
+    float pos[4];
+    float col[4];
+};
+
+constexpr Vertex kTriangleVertices[] = {
+    { {  0.0f,  0.5f, 0.0f, 1.0f }, { 1.0f, 0.0f, 0.0f, 1.0f } },
+    { { -0.5f, -0.5f, 0.0f, 1.0f }, { 0.0f, 1.0f, 0.0f, 1.0f } },
+    { {  0.5f, -0.5f, 0.0f, 1.0f }, { 0.0f, 0.0f, 1.0f, 1.0f } },
+};
+
+const char kTriangleHlsl[] = R"(
+struct VSInput {
+    float4 position : POSITION;
+    float4 color : COLOR;
+};
+
+struct PSInput {
+    float4 position : SV_POSITION;
+    float4 color : COLOR;
+};
+
+PSInput MainVS(VSInput input) {
+    PSInput output;
+    output.position = input.position;
+    output.color = input.color;
+    return output;
+}
+
+float4 MainPS(PSInput input) : SV_TARGET {
+    return input.color;
+}
+)";
+
+const char kTriangleVertexShader[] = 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;
+}
+)";
+
+const char kTriangleFragmentShader[] = R"(#version 430
+in vec4 vColor;
+
+layout(location = 0) out vec4 fragColor;
+
+void main() {
+    fragColor = vColor;
+}
+)";
+
+const char* GetScreenshotFilename(RHIType type) {
+    return type == RHIType::D3D12 ? "triangle_d3d12.ppm" : "triangle_opengl.ppm";
+}
+
+int GetComparisonThreshold(RHIType type) {
+    return type == RHIType::OpenGL ? 5 : 0;
+}
+
+GraphicsPipelineDesc CreateTrianglePipelineDesc(RHIType type) {
+    GraphicsPipelineDesc desc = {};
+    desc.topologyType = static_cast<uint32_t>(PrimitiveTopologyType::Triangle);
+    desc.renderTargetFormats[0] = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
+    desc.depthStencilFormat = static_cast<uint32_t>(Format::Unknown);
+    desc.sampleCount = 1;
+
+    desc.rasterizerState.fillMode = static_cast<uint32_t>(FillMode::Solid);
+    desc.rasterizerState.cullMode = static_cast<uint32_t>(CullMode::None);
+    desc.rasterizerState.frontFace = static_cast<uint32_t>(FrontFace::CounterClockwise);
+    desc.rasterizerState.depthClipEnable = true;
+
+    desc.depthStencilState.depthTestEnable = false;
+    desc.depthStencilState.depthWriteEnable = false;
+    desc.depthStencilState.stencilEnable = false;
+
+    InputElementDesc position = {};
+    position.semanticName = "POSITION";
+    position.semanticIndex = 0;
+    position.format = static_cast<uint32_t>(Format::R32G32B32A32_Float);
+    position.inputSlot = 0;
+    position.alignedByteOffset = 0;
+    desc.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;
+    desc.inputLayout.elements.push_back(color);
+
+    if (type == RHIType::D3D12) {
+        desc.vertexShader.source.assign(kTriangleHlsl, kTriangleHlsl + strlen(kTriangleHlsl));
+        desc.vertexShader.sourceLanguage = ShaderLanguage::HLSL;
+        desc.vertexShader.entryPoint = L"MainVS";
+        desc.vertexShader.profile = L"vs_5_0";
+
+        desc.fragmentShader.source.assign(kTriangleHlsl, kTriangleHlsl + strlen(kTriangleHlsl));
+        desc.fragmentShader.sourceLanguage = ShaderLanguage::HLSL;
+        desc.fragmentShader.entryPoint = L"MainPS";
+        desc.fragmentShader.profile = L"ps_5_0";
+    } else {
+        desc.vertexShader.source.assign(kTriangleVertexShader, kTriangleVertexShader + strlen(kTriangleVertexShader));
+        desc.vertexShader.sourceLanguage = ShaderLanguage::GLSL;
+        desc.vertexShader.profile = L"vs_4_30";
+
+        desc.fragmentShader.source.assign(kTriangleFragmentShader, kTriangleFragmentShader + strlen(kTriangleFragmentShader));
+        desc.fragmentShader.sourceLanguage = ShaderLanguage::GLSL;
+        desc.fragmentShader.profile = L"fs_4_30";
+    }
+
+    return desc;
+}
+
+class TriangleTest : public RHIIntegrationFixture {
+protected:
+    void SetUp() override;
+    void TearDown() override;
+    void RenderFrame() override;
+
+private:
+    void InitializeTriangleResources();
+    void ShutdownTriangleResources();
+
+    RHIBuffer* mVertexBuffer = nullptr;
+    RHIResourceView* mVertexBufferView = nullptr;
+    RHIPipelineState* mPipelineState = nullptr;
+};
+
+void TriangleTest::SetUp() {
+    RHIIntegrationFixture::SetUp();
+    InitializeTriangleResources();
+}
+
+void TriangleTest::TearDown() {
+    ShutdownTriangleResources();
+    RHIIntegrationFixture::TearDown();
+}
+
+void TriangleTest::InitializeTriangleResources() {
+    BufferDesc bufferDesc = {};
+    bufferDesc.size = sizeof(kTriangleVertices);
+    bufferDesc.stride = sizeof(Vertex);
+    bufferDesc.bufferType = static_cast<uint32_t>(BufferType::Vertex);
+
+    mVertexBuffer = GetDevice()->CreateBuffer(bufferDesc);
+    ASSERT_NE(mVertexBuffer, nullptr);
+    mVertexBuffer->SetData(kTriangleVertices, sizeof(kTriangleVertices));
+    mVertexBuffer->SetStride(sizeof(Vertex));
+    mVertexBuffer->SetBufferType(BufferType::Vertex);
+
+    ResourceViewDesc viewDesc = {};
+    viewDesc.dimension = ResourceViewDimension::Buffer;
+    viewDesc.structureByteStride = sizeof(Vertex);
+    mVertexBufferView = GetDevice()->CreateVertexBufferView(mVertexBuffer, viewDesc);
+    ASSERT_NE(mVertexBufferView, nullptr);
+
+    GraphicsPipelineDesc pipelineDesc = CreateTrianglePipelineDesc(GetBackendType());
+    mPipelineState = GetDevice()->CreatePipelineState(pipelineDesc);
+    ASSERT_NE(mPipelineState, nullptr);
+    ASSERT_TRUE(mPipelineState->IsValid());
+
+    Log("[TEST] Triangle resources initialized for backend %d", static_cast<int>(GetBackendType()));
+}
+
+void TriangleTest::ShutdownTriangleResources() {
+    if (mPipelineState != nullptr) {
+        mPipelineState->Shutdown();
+        delete mPipelineState;
+        mPipelineState = nullptr;
+    }
+
+    if (mVertexBufferView != nullptr) {
+        mVertexBufferView->Shutdown();
+        delete mVertexBufferView;
+        mVertexBufferView = nullptr;
+    }
+
+    if (mVertexBuffer != nullptr) {
+        mVertexBuffer->Shutdown();
+        delete mVertexBuffer;
+        mVertexBuffer = nullptr;
+    }
+}
+
+void TriangleTest::RenderFrame() {
+    ASSERT_NE(mPipelineState, nullptr);
+    ASSERT_NE(mVertexBufferView, nullptr);
+
+    RHICommandList* cmdList = GetCommandList();
+    RHICommandQueue* cmdQueue = GetCommandQueue();
+    ASSERT_NE(cmdList, nullptr);
+    ASSERT_NE(cmdQueue, nullptr);
+
+    cmdList->Reset();
+    SetRenderTargetForClear();
+
+    Viewport viewport = { 0.0f, 0.0f, 1280.0f, 720.0f, 0.0f, 1.0f };
+    Rect scissorRect = { 0, 0, 1280, 720 };
+    cmdList->SetViewport(viewport);
+    cmdList->SetScissorRect(scissorRect);
+    cmdList->Clear(0.0f, 0.0f, 1.0f, 1.0f, 1);
+
+    cmdList->SetPipelineState(mPipelineState);
+    cmdList->SetPrimitiveTopology(PrimitiveTopology::TriangleList);
+
+    RHIResourceView* vertexBuffers[] = { mVertexBufferView };
+    uint64_t offsets[] = { 0 };
+    uint32_t strides[] = { sizeof(Vertex) };
+    cmdList->SetVertexBuffers(0, 1, vertexBuffers, offsets, strides);
+    cmdList->Draw(3);
+
+    EndRender();
+
+    cmdList->Close();
+    void* cmdLists[] = { cmdList };
+    cmdQueue->ExecuteCommandLists(1, cmdLists);
+}
+
+TEST_P(TriangleTest, RenderTriangle) {
+    RHICommandQueue* cmdQueue = GetCommandQueue();
+    RHISwapChain* swapChain = GetSwapChain();
+    const int targetFrameCount = 30;
+    const char* screenshotFilename = GetScreenshotFilename(GetBackendType());
+    const int comparisonThreshold = GetComparisonThreshold(GetBackendType());
+
+    for (int frameCount = 0; frameCount <= targetFrameCount; ++frameCount) {
+        if (frameCount > 0) {
+            cmdQueue->WaitForPreviousFrame();
+        }
+
+        Log("[TEST] Triangle MainLoop: frame %d", frameCount);
+        BeginRender();
+        RenderFrame();
+
+        if (frameCount >= targetFrameCount) {
+            cmdQueue->WaitForIdle();
+            Log("[TEST] Triangle MainLoop: frame %d reached, capturing %s", frameCount, screenshotFilename);
+            ASSERT_TRUE(TakeScreenshot(screenshotFilename));
+            ASSERT_TRUE(CompareWithGoldenTemplate(screenshotFilename, "GT.ppm", static_cast<float>(comparisonThreshold)));
+            Log("[TEST] Triangle MainLoop: frame %d compare passed", frameCount);
+            break;
+        }
+
+        swapChain->Present(0, 0);
+    }
+}
+
+} // namespace
+
+INSTANTIATE_TEST_SUITE_P(D3D12, TriangleTest, ::testing::Values(RHIType::D3D12));
+INSTANTIATE_TEST_SUITE_P(OpenGL, TriangleTest, ::testing::Values(RHIType::OpenGL));
+
+GTEST_API_ int main(int argc, char** argv) {
+    Logger::Get().Initialize();
+    Logger::Get().AddSink(std::make_unique<ConsoleLogSink>());
+    Logger::Get().SetMinimumLevel(LogLevel::Debug);
+
+    testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}