c++ - 绘制全屏四边形？

Question

这有什么问题：

pVertexBuffer[0].Position = D3DXVECTOR3(0.0f,0.0f,0.0f);
pVertexBuffer[0].TexCoord = D3DXVECTOR2(0.0f,0.0f);

pVertexBuffer[1].Position = D3DXVECTOR3(m_ScreenResolutionX,0.0f,0.0f);
pVertexBuffer[1].TexCoord = D3DXVECTOR2(1.0f,0.0f);

pVertexBuffer[2].Position = D3DXVECTOR3(0.0f,m_ScreenResolutionY,0.0f);
pVertexBuffer[2].TexCoord = D3DXVECTOR2(0.0f,1.0f);

pVertexBuffer[3].Position = D3DXVECTOR3(0.0f,m_ScreenResolutionY,0.0f);
pVertexBuffer[3].TexCoord = D3DXVECTOR2(0.0f,1.0f);

pVertexBuffer[4].Position = D3DXVECTOR3(m_ScreenResolutionX,0.0f,0.0f);
pVertexBuffer[4].TexCoord = D3DXVECTOR2(1.0f,0.0f);

pVertexBuffer[5].Position = D3DXVECTOR3(m_ScreenResolutionX,m_ScreenResolutionY,0.0f);
pVertexBuffer[5].TexCoord = D3DXVECTOR2(1.0f,1.0f);

如果我尝试渲染这个，我什么也看不到。在顶点着色器中，我使用这些顶点位置而不转换它们。

Answer 1

顶点着色器以同质屏幕空间坐标输出顶点；它们通常与屏幕分辨率无关。换句话说，您应该输出从 (-1,-1,0) 到 (1, 1, 0) 的坐标。