147 lines
3.3 KiB
C++
147 lines
3.3 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 *CreateTextureFromFile(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 vertex_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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Camera cam;
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private:
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Texture2D * texture =nullptr;
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Sampler * sampler =nullptr;
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MaterialParameters * material_instance =nullptr;
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Renderable * render_obj =nullptr;
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RenderableInstance *render_instance =nullptr;
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GPUBuffer * ubo_camera_info =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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pipeline=CreatePipeline(material_instance,InlinePipeline::Solid2D,Prim::Rectangles);
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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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material_instance->BindSampler("tex",texture,sampler);
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material_instance->BindUBO("camera",ubo_camera_info);
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material_instance->Update();
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db->Add(texture);
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return(true);
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}
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bool InitUBO()
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{
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const VkExtent2D extent=sc_render_target->GetExtent();
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cam.width=extent.width;
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cam.height=extent.height;
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cam.Refresh();
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ubo_camera_info=db->CreateUBO(sizeof(CameraInfo),&cam.info);
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if(!ubo_camera_info)
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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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render_obj=db->CreateRenderable(VERTEX_COUNT);
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if(!render_obj)return(false);
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render_obj->Set(VAN::Position,db->CreateVAB(VAF_VEC4,VERTEX_COUNT,vertex_data));
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render_obj->Set(VAN::TexCoord,db->CreateVAB(VAF_VEC4,VERTEX_COUNT,tex_coord_data));
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render_instance=db->CreateRenderableInstance(render_obj,material_instance,pipeline);
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return(render_instance);
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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(!InitUBO())
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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_instance);
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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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cam.width=w;
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cam.height=h;
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cam.Refresh();
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ubo_camera_info->Write(&cam.info);
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BuildCommandBuffer(render_instance);
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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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