135 lines
3.8 KiB
C++
135 lines
3.8 KiB
C++
// 该范例主要演示使用2D坐系统直接绘制一个渐变色的三角形,使用UBO传递Viewport信息
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#include"VulkanAppFramework.h"
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#include<hgl/math/Math.h>
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#include<hgl/filesystem/FileSystem.h>
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#include<hgl/graph/SceneInfo.h>
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#include<hgl/graph/VKVertexInputConfig.h>
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#include<hgl/graph/VKRenderablePrimitiveCreater.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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static float position_data_float[VERTEX_COUNT][2]=
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{
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{0.5, 0.25},
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{0.75, 0.75},
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{0.25, 0.75}
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};
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static uint16 position_data_u16[VERTEX_COUNT][2]={};
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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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//#define USE_ZERO2ONE_COORD //使用左上角0,0右下角1,1的坐标系
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class TestApp:public VulkanApplicationFramework
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{
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private:
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MaterialInstance * material_instance =nullptr;
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Renderable * 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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mtl::Material2DCreateConfig cfg(device->GetDeviceAttribute(),"VertexColor2D",Prim::Triangles);
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VILConfig vil_config;
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#ifdef USE_ZERO2ONE_COORD
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cfg.coordinate_system=CoordinateSystem2D::ZeroToOne;
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#else
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cfg.coordinate_system=CoordinateSystem2D::Ortho;
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cfg.position_format =VAT_UVEC2; //这里指定shader中使用uvec2当做顶点输入格式
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// ^
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// + 这上下两种格式要配套，否则会出错
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// v
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vil_config.Add(VAN::Position,VF_V2U16); //这里指定VBO中使用RG16U当做顶点数据格式
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#endif//USE_ZERO2ONE_COORD
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vil_config.Add(VAN::Color,VF_V4UN8); //这里指定VBO中使用RGBA8UNorm当做颜色数据格式
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cfg.local_to_world=false;
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AutoDelete<mtl::MaterialCreateInfo> mci=mtl::CreateVertexColor2D(&cfg);
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material_instance=db->CreateMaterialInstance(mci,&vil_config);
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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,Prim::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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RenderablePrimitiveCreater rpc(db,"Triangle",VERTEX_COUNT);
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#ifdef USE_ZERO2ONE_COORD //使用0 to 1坐标系
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if(!rpc.SetVBO(VAN::Position, VF_V2F, position_data_float ))return(false);
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#else //使用ortho坐标系
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if(!rpc.SetVBO(VAN::Position, VF_V2U16, position_data_u16 ))return(false);
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#endif//USE_ZERO2ONE_COORD
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if(!rpc.SetVBO(VAN::Color, VF_V4UN8, color_data ))return(false);
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render_obj=rpc.Create(material_instance,pipeline);
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return(true);
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}
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public:
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bool Init(uint w,uint h)
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{
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if(!VulkanApplicationFramework::Init(w,h))
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return(false);
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#ifndef USE_ZERO2ONE_COORD
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for(uint i=0;i<VERTEX_COUNT;i++)
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{
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position_data_u16[i][0]=position_data_float[i][0]*w;
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position_data_u16[i][1]=position_data_float[i][1]*h;
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}
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#endif//
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if(!InitMaterial())
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return(false);
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if(!InitVBO())
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return(false);
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if(!BuildCommandBuffer(render_obj))
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return(false);
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return(true);
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}
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void Resize(uint w,uint h)override
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{
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VulkanApplicationFramework::Resize(w,h);
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BuildCommandBuffer(render_obj);
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}
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};//class TestApp:public VulkanApplicationFramework
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int main(int,char **)
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{
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RunApp<TestApp>(1280,720);
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}
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