mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-11-26 01:11:32 +11:00
45 lines
912 B
Plaintext
45 lines
912 B
Plaintext
|
#version 450
|
||
|
|
|
||
|
|
/*
|
||
|
|
Anime4k - Luma shader - ported by Hyllian - 2020
|
||
|
|
*/
|
||
|
|
|
||
|
|
layout(push_constant) uniform Push
|
||
|
|
{
|
||
|
|
vec4 SourceSize;
|
||
|
|
vec4 OriginalSize;
|
||
|
|
vec4 OutputSize;
|
||
|
|
uint FrameCount;
|
||
|
|
} params;
|
||
|
|
|
||
|
|
layout(std140, set = 0, binding = 0) uniform UBO
|
||
|
|
{
|
||
|
|
mat4 MVP;
|
||
|
|
} global;
|
||
|
|
|
||
|
|
#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()
|
||
|
|
{
|
||
|
|
vec4 c0 = texture(Source, vTexCoord);
|
||
|
|
|
||
|
|
//Quick luminance approximation
|
||
|
|
float lum = (c0.r + c0[0].r + c0.g + c0.g + c0.g + c0.b) / 6;
|
||
|
|
|
||
|
|
//Computes the luminance and saves it in the unused alpha channel
|
||
|
|
FragColor = vec4(c0.r, c0.g, c0.b, lum);
|
||
|
|
}
|