118 lines
2.7 KiB
C++
118 lines
2.7 KiB
C++
// 2.RectanglePrimivate
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// 该示例是texture_rect的进化，演示使用GeometryShader画矩形
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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/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_SIZE=512;
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constexpr uint32_t VERTEX_COUNT=1;
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constexpr float BORDER=0.1f;
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constexpr float position_data[4]=
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{
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SCREEN_SIZE*BORDER, SCREEN_SIZE*BORDER,
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SCREEN_SIZE*(1.0-BORDER), SCREEN_SIZE*(1.0-BORDER)
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};
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constexpr float tex_coord_data[4]=
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{
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0,0,1,1
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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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Primitive * primitive =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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material_instance=db->CreateMaterialInstance(OS_TEXT("res/material/TextureRect2D"));
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if(!material_instance)return(false);
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BindCameraUBO(material_instance);
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pipeline=CreatePipeline(material_instance,InlinePipeline::Solid2D,Prim::SolidRectangles);
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if(!pipeline)return(false);
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texture=db->LoadTexture2D(OS_TEXT("res/image/lena.Tex2D"));
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if(!texture)return(false);
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sampler=db->CreateSampler();
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if(!material_instance->BindImageSampler(DescriptorSetType::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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primitive=db->CreatePrimitive(VERTEX_COUNT);
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if(!primitive)return(false);
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primitive->Set(VAN::Position,db->CreateVBO(VF_V4F,VERTEX_COUNT,position_data));
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primitive->Set(VAN::TexCoord,db->CreateVBO(VF_V4F,VERTEX_COUNT,tex_coord_data));
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render_obj=db->CreateRenderable(primitive,material_instance,pipeline);
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return(render_obj);
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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_SIZE,SCREEN_SIZE))
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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(render_obj);
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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(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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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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