#include "Uniforms.hlsl"
#include "Samplers.hlsl"
#include "Transform.hlsl"
#include "ScreenPos.hlsl"
#include "Lighting.hlsl"

void VS(float4 iPos : POSITION,
    out float4 oPos : POSITION,
    out float2 oScreenPos : TEXCOORD0)
{
    float4x3 modelMatrix = iModelMatrix;
    float3 worldPos = GetWorldPos(modelMatrix);
    oPos = GetClipPos(worldPos);
    oScreenPos = GetScreenPosPreDiv(oPos);
}

void PS(float2 iScreenPos : TEXCOORD0,
    out float4 oColor : COLOR0)
{
    float3 rgb = tex2D(sDiffMap, iScreenPos).rgb;
    float intensity = GetIntensity(rgb);
    oColor = float4(intensity, intensity, intensity, 1.0);
}