【亲测免费】 Diligent Engine 开源项目教程

项目介绍

Diligent Engine 是一个现代的、跨平台的低级图形库，旨在为开发人员提供高效、灵活且易于使用的图形API。它支持多种平台，包括Windows、Linux、macOS、Android和iOS，并且兼容Direct3D11、Direct3D12、OpenGL/GLES和Vulkan。Diligent Engine 的设计理念是提供一个统一的接口，使得开发人员可以轻松地在不同平台上进行开发，同时保持高性能和低开销。

项目快速启动

环境搭建

首先，克隆Diligent Engine仓库到本地：

git clone https://github.com/DiligentGraphics/DiligentEngine.git

进入项目目录并构建项目：

cd DiligentEngine
mkdir build
cd build
cmake ..
make

示例代码

以下是一个简单的示例代码，展示如何在Diligent Engine中创建一个窗口并渲染一个三角形：

#include "EngineFactoryD3D11.h"
#include "EngineFactoryD3D12.h"
#include "EngineFactoryOpenGL.h"
#include "EngineFactoryVulkan.h"
#include "GraphicsEngine.h"
#include "SwapChain.h"
#include "DeviceContext.h"
#include "Shader.h"
#include "PipelineState.h"
#include "Buffer.h"
#include "RenderDevice.h"
#include "ShaderResourceBinding.h"
#include "MapHelper.h"

using namespace Diligent;

void CreateDeviceAndSwapChain()
{
    // 初始化引擎工厂
    auto* pFactoryD3D11 = GetEngineFactoryD3D11();
    EngineD3D11CreateInfo EngineCI;
    pFactoryD3D11->CreateDeviceAndContextsD3D11(EngineCI, &m_pDevice, &m_pContext);

    // 创建交换链
    SwapChainDesc SCDesc;
    pFactoryD3D11->CreateSwapChainD3D11(m_pDevice, m_pContext, SCDesc, FullScreenModeDesc{}, nullptr, &m_pSwapChain);
}

void InitializePipelineState()
{
    // 创建顶点着色器
    ShaderCreateInfo ShaderCI;
    ShaderCI.SourceLanguage = SHADER_SOURCE_LANGUAGE_HLSL;
    ShaderCI.ShaderCompiler = SHADER_COMPILER_DEFAULT;
    ShaderCI.UseCombinedTextureSamplers = true;

    RefCntAutoPtr<IShader> pVS;
    {
        ShaderCI.Desc.ShaderType = SHADER_TYPE_VERTEX;
        ShaderCI.EntryPoint = "main";
        ShaderCI.Desc.Name = "Triangle Vertex Shader";
        ShaderCI.Source = R"(
            float4 main(float4 pos : POSITION) : SV_POSITION
            {
                return pos;
            }
        )";
        m_pDevice->CreateShader(ShaderCI, &pVS);
    }

    // 创建像素着色器
    RefCntAutoPtr<IShader> pPS;
    {
        ShaderCI.Desc.ShaderType = SHADER_TYPE_PIXEL;
        ShaderCI.EntryPoint = "main";
        ShaderCI.Desc.Name = "Triangle Pixel Shader";
        ShaderCI.Source = R"(
            float4 main() : SV_TARGET
            {
                return float4(1.0, 0.5, 0.2, 1.0);
            }
        )";
        m_pDevice->CreateShader(ShaderCI, &pPS);
    }

    // 创建管线状态
    GraphicsPipelineStateCreateInfo PSOCreateInfo;
    PSOCreateInfo.PSODesc.Name = "Triangle PSO";
    PSOCreateInfo.PSODesc.GraphicsPipeline.NumRenderTargets = 1;
    PSOCreateInfo.PSODesc.GraphicsPipeline.RTVFormats[0] = m_pSwapChain->GetDesc().ColorBufferFormat;
    PSOCreateInfo.PSODesc.GraphicsPipeline.DSVFormat = m_pSwapChain->GetDesc().DepthBufferFormat;
    PSOCreateInfo.pVS = pVS;
    PSOCreateInfo.pPS = pPS