but i didnt understand it well. I want to use fsquad with simple
post processing effect (learning shaders). So if i have quad created like this:
struct Vertex{ D3DXVECTOR3 Position; D3DXVECTOR2 TexCoord;};D3DVERTEXELEMENT9 VertexElements[] ={ {0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0}, {0, 12, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 0}, D3DDECL_END()};float p = 1.0f;Vertex* pVertices = 0;VertexBuffer->Lock(0, 0, (LPVOID*)&pVertices, 0);pVertices[0].Position = D3DXVECTOR3( -p, p, p );pVertices[1].Position = D3DXVECTOR3( p, p, p );pVertices[2].Position = D3DXVECTOR3( p, -p, p );pVertices[3].Position = D3DXVECTOR3( -p, -p, p );pVertices[0].TexCoord = D3DXVECTOR2(0.0f, 0.0f);pVertices[1].TexCoord = D3DXVECTOR2(1.0f, 0.0f);pVertices[2].TexCoord = D3DXVECTOR2(1.0f, 1.0f);pVertices[3].TexCoord = D3DXVECTOR2(0.0f, 1.0f);VertexBuffer->Unlock();how do i "offset" vertex positions to get perfect alignment on
variable screen resolutions?
vertex shader:
struct QuadInput{ float3 Position : POSITION; float2 TexCoord0 : TEXCOORD0;};struct VSOutput{ float4 Position : POSITION; float2 TexCoord : TEXCOORD0;};void VS(in QuadInput IN, out VSOutput OUT){ OUT.Position.x = ???;//IN.Position.x; OUT.Position.y = ???;//IN.Position.y; OUT.Position.z = IN.Position.z; OUT.Position.w = ???; OUT.TexCoord = IN.TexCoord;}Thanks in advance.
