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

#ifdef COMPILEPS
    uniform vec4 cOutlineColor;
    uniform vec2 cOutlineBlurredMaskHInvSize;
#endif

// Default LitSolid Vertex Shader impl:
void VS(float4 iPos : POSITION,
    out float2 vTexCoord : TEXCOORD0,
    out float2 vScreenPos : TEXCOORD1,
    out float4 oPos : OUTPOSITION)
{
    float3 worldPos = GetWorldPos(iModelMatrix);
    oPos = GetClipPos(worldPos);

    vTexCoord = GetQuadTexCoord(oPos);
    vScreenPos = GetScreenPosPreDiv(oPos);
}

void PS(
    float2 iTexCoord : TEXCOORD0,
    float2 iScreenPos : TEXCOORD1,
    float4 iPos : POSITION,
    out float4 oColor : OUTCOLOR0)
{
     #ifdef MASK
        oColor = vec4(cOutlineColor.rgb, 1.0);
    #endif

    #ifdef BLURH
        float4 rgba = Sample2D(DiffMap, vTexCoord + vec2(0.0, 0.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(-1.0, 0.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(1.0, 0.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(-2.0, 0.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(2.0, 0.0) * cOutlineBlurredMaskHInvSize);
        oColor = rgba * 0.2;
    #endif

    #ifdef BLURV
        float4 rgba = Sample2D(DiffMap, vTexCoord + vec2(0.0, 0.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(0.0, -1.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(0.0, 1.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(0.0, -2.0) * cOutlineBlurredMaskHInvSize)
                  + Sample2D(DiffMap, vTexCoord + vec2(0.0, 2.0) * cOutlineBlurredMaskHInvSize);
        oColor = rgba * 0.2;
    #endif

    #ifdef OUTPUT
        float4 blurredMask = texture2D(DiffMap, vTexCoord);
        float4 mask = texture2D(NormalMap, vTexCoord);
        float4 viewport = texture2D(SpecMap, vTexCoord);
        blurredMask = clamp(blurredMask - mask.a, 0.0, 1.0);
        blurredMask *= 3.0;
        oColor = viewport * (1.0 - blurredMask.a) + blurredMask;
    #endif
}