137 lines
3.3 KiB
C++
137 lines
3.3 KiB
C++
// 2.texture_rect
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// 该示例是1.indices_rect的进化，演示在矩形上贴上贴图
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#include"VulkanAppFramework.h"
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#include<hgl/graph/VKTexture.h>
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#include<hgl/graph/VKSampler.h>
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#include<hgl/graph/VKInlinePipeline.h>
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#include<hgl/math/Math.h>
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using namespace hgl;
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using namespace hgl::graph;
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VK_NAMESPACE_BEGIN
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Texture2D *CreateTexture2DFromFile(GPUDevice *device,const OSString &filename);
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VK_NAMESPACE_END
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constexpr uint32_t SCREEN_WIDTH=256;
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constexpr uint32_t SCREEN_HEIGHT=256;
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constexpr uint32_t VERTEX_COUNT=4;
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constexpr float position_data[VERTEX_COUNT][2]=
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{
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{0, 0},
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{SCREEN_WIDTH, 0},
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{0, SCREEN_HEIGHT},
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{SCREEN_WIDTH, SCREEN_HEIGHT}
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};
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constexpr float tex_coord_data[VERTEX_COUNT][2]=
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{
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{0,0},
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{1,0},
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{0,1},
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{1,1}
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};
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constexpr uint32_t INDEX_COUNT=6;
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constexpr uint16 index_data[INDEX_COUNT]=
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{
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0,1,3,
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0,3,2
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};
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class TestApp:public VulkanApplicationFramework
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{
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private:
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Texture2D * texture =nullptr;
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Sampler * sampler =nullptr;
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MaterialInstance * material_instance =nullptr;
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Renderable * renderable =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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material_instance=db->CreateMaterialInstance(OS_TEXT("res/material/Texture2D"));
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if(!material_instance)return(false);
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BindCameraUBO(material_instance);
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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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if(!pipeline)
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return(false);
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texture=db->LoadTexture2D(OS_TEXT("res/image/lena.Tex2D"),true);
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if(!texture)return(false);
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sampler=db->CreateSampler();
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if(!material_instance->BindSampler(DescriptorSetsType::Value,"tex",texture,sampler))return(false);
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return(true);
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}
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bool InitVBO()
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{
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auto primitive=db->CreatePrimitive(VERTEX_COUNT);
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if(!primitive)return(false);
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if(!primitive->Set(VAN::Position,db->CreateVBO(VF_V2F,VERTEX_COUNT,position_data)))return(false);
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if(!primitive->Set(VAN::TexCoord,db->CreateVBO(VF_V2F,VERTEX_COUNT,tex_coord_data)))return(false);
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if(!primitive->Set(db->CreateIBO16(INDEX_COUNT,index_data)))return(false);
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renderable=db->CreateRenderable(primitive,material_instance,pipeline);
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return(true);
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}
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public:
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bool Init()
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{
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if(!VulkanApplicationFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
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return(false);
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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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BuildCommandBuffer(renderable);
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return(true);
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}
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void Resize(int w,int h)override
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{
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VulkanApplicationFramework::Resize(w,h);
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BuildCommandBuffer(renderable);
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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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#ifdef _DEBUG
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if(!CheckStrideBytesByFormat())
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return 0xff;
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#endif//
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TestApp app;
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if(!app.Init())
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return(-1);
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while(app.Run());
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return 0;
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}
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