shaders

void VS(float3 pos : POSITION, out float4 posO : POSITION, out float2 texO : TEXCOORD0)
{
    posO = mul(float4(pos,1.0f), g_mWorldViewProj);
    texO = pos.xz;
}

float4 PS(float2 tex : TEXCOORD0) : COLOR
{
    float height = tex2D(Heightfield,tex).x;
    return float4(height, height, height, 1.0f);
}