Dibujo un Quad pantalla completa?

Question

¿Qué hay de malo en esto:

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);

si trato de hacer esto, yo no veo nada. en el shader de vértice i uso estas posiciones de los vértices sin transformarlas.

Answer 1

Vertex shaders vértices de salida en espacio de pantalla homogénea coordenadas; por lo general son de resolución de pantalla independiente. En otras palabras, usted debe salida de coordenadas a partir de (-1, -1,0) a (1, 1, 0).