129 lines
3.3 KiB
C++
129 lines
3.3 KiB
C++
// 该范例主要演示使用RenderList系统绘制多个三角形，并利用RenderList进行排序以及自动合并进行Instance渲染
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#include<hgl/WorkManager.h>
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#include<hgl/math/Math.h>
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#include<hgl/graph/PrimitiveCreater.h>
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#include<hgl/graph/VKVertexInputConfig.h>
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#include<hgl/graph/mtl/Material2DCreateConfig.h>
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using namespace hgl;
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using namespace hgl::graph;
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constexpr uint32_t VERTEX_COUNT=3;
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constexpr uint32_t TRIANGLE_NUMBER=12;
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constexpr float position_data[VERTEX_COUNT*2]=
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{
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0.0, 0.0,
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-0.1, 0.9,
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0.1, 0.9
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};
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constexpr uint8 color_data[VERTEX_COUNT][4]=
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{
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{255,0,0,255},
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{0,255,0,255},
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{0,0,255,255}
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};
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class TestApp:public WorkObject
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{
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Color4f clear_color =Color4f(0.2f,0.2f,0.2f,1.0f);
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private:
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AutoDelete<RenderList> render_list =nullptr;
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SceneNode render_root;
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MaterialInstance * material_instance =nullptr;
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Mesh * render_obj =nullptr;
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Pipeline * pipeline =nullptr;
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private:
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bool InitMaterial()
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{
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{
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mtl::Material2DCreateConfig cfg(GetDevAttr(),"VertexColor2D",PrimitiveType::Triangles);
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cfg.coordinate_system=CoordinateSystem2D::NDC;
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cfg.local_to_world=true;
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AutoDelete<mtl::MaterialCreateInfo> mci=mtl::CreateVertexColor2D(&cfg);
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VILConfig vil_config;
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vil_config.Add(VAN::Color,VF_V4UN8);
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material_instance=db->CreateMaterialInstance(mci,&vil_config);
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}
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if(!material_instance)
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return(false);
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// pipeline=db->CreatePipeline(material_instance,sc_render_target,OS_TEXT("res/pipeline/solid2d"));
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pipeline=CreatePipeline(material_instance,InlinePipeline::Solid2D,PrimitiveType::Triangles); //等同上一行，为Framework重载，默认使用swapchain的render target
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return pipeline;
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}
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bool InitVBO()
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{
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render_obj=CreateMesh("Triangle",VERTEX_COUNT,material_instance,pipeline,
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{
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{VAN::Position, VF_V2F, position_data},
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{VAN::Color, VF_V4UN8, color_data }
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});
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if(!render_obj)
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return(false);
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double rad;
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Matrix4f mat;
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for(uint i=0;i<TRIANGLE_NUMBER;i++)
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{
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rad=deg2rad<double>((360.0f/double(TRIANGLE_NUMBER))*i); //这里一定要加<float>或<float>，否则结果用int保存会出现问题
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mat=rotate(rad,Vector3f(0,0,1));
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render_root.Add(new SceneNode(mat,render_obj));
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}
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render_root.RefreshMatrix();
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render_list->Expend(&render_root);
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return(true);
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}
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public:
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TestApp(RenderFramework *rf):WorkObject(rf,rf->GetSwapchainRenderTarget())
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{
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render_list=rf->CreateRenderList();
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if(!InitMaterial())
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return;
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if(!InitVBO())
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return;
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}
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void Render(double delta_time,graph::RenderCmdBuffer *cmd)override
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{
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cmd->SetClearColor(0,clear_color);
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cmd->BeginRenderPass();
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render_list->Render(cmd);
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cmd->EndRenderPass();
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}
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};//class TestApp:public WorkObject
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int os_main(int,os_char **)
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{
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return RunFramework<TestApp>(OS_TEXT("AutoInstance"),1024,1024);
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}
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