90 lines
2 KiB
Text
90 lines
2 KiB
Text
#version 450
|
|
|
|
|
|
// "LeiFX" shader - Gamma process
|
|
//
|
|
// Copyright (C) 2013-2014 leilei
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify it
|
|
// under the terms of the GNU General Public License as published by the Free
|
|
// Software Foundation; either version 2 of the License, or (at your option)
|
|
// any later version.
|
|
|
|
layout(push_constant) uniform Push
|
|
{
|
|
vec4 SourceSize;
|
|
vec4 OriginalSize;
|
|
vec4 OutputSize;
|
|
uint FrameCount;
|
|
float GAMMA_LEVEL;
|
|
} params;
|
|
|
|
#pragma parameter GAMMA_LEVEL "LeiFX Gamma Correction" 1.3 0.00 2.00 0.01
|
|
|
|
#define GAMMA_LEVEL params.GAMMA_LEVEL
|
|
|
|
layout(std140, set = 0, binding = 0) uniform UBO
|
|
{
|
|
mat4 MVP;
|
|
} global;
|
|
|
|
#define saturate(c) clamp(c, 0.0, 1.0)
|
|
#define lerp(c) mix(c)
|
|
#define mul(a,b) (b*a)
|
|
#define fmod(c) mod(c)
|
|
#define frac(c) fract(c)
|
|
#define tex2D(c,d) texture(c,d)
|
|
#define float2 vec2
|
|
#define float3 vec3
|
|
#define float4 vec4
|
|
#define int2 ivec2
|
|
#define int3 ivec3
|
|
#define int4 ivec4
|
|
#define bool2 bvec2
|
|
#define bool3 bvec3
|
|
#define bool4 bvec4
|
|
#define float2x2 mat2x2
|
|
#define float3x3 mat3x3
|
|
#define float4x4 mat4x4
|
|
|
|
float mod2(float x, float y)
|
|
{
|
|
return x - y * floor (x/y);
|
|
}
|
|
|
|
//float GAMMA_LEVEL = 1.0;
|
|
|
|
#pragma stage vertex
|
|
layout(location = 0) in vec4 Position;
|
|
layout(location = 1) in vec2 TexCoord;
|
|
layout(location = 0) out vec2 vTexCoord;
|
|
|
|
void main()
|
|
{
|
|
gl_Position = global.MVP * Position;
|
|
vTexCoord = TexCoord;
|
|
}
|
|
|
|
#pragma stage fragment
|
|
layout(location = 0) in vec2 vTexCoord;
|
|
layout(location = 0) out vec4 FragColor;
|
|
layout(set = 0, binding = 2) uniform sampler2D Source;
|
|
|
|
void main()
|
|
{
|
|
float3 outcolor = tex2D(Source, vTexCoord).rgb;
|
|
|
|
float2 res;
|
|
res.x = params.SourceSize.x;
|
|
res.y = params.SourceSize.y;
|
|
|
|
// Gamma scanlines
|
|
// the Voodoo drivers usually supply a 1.3 gamma setting whether people liked it or not
|
|
// but it was enough to brainwash the competition for looking 'too dark'
|
|
|
|
outcolor.r = pow(outcolor.r, 1.0 / GAMMA_LEVEL);
|
|
outcolor.g = pow(outcolor.g, 1.0 / GAMMA_LEVEL);
|
|
outcolor.b = pow(outcolor.b, 1.0 / GAMMA_LEVEL);
|
|
|
|
FragColor = vec4(outcolor, 1.0);
|
|
} |