mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-15 00:42:20 +00:00
22 lines
678 B
GLSL
22 lines
678 B
GLSL
|
|
in vec2 TexCoord;
|
|
layout(location=0) out vec4 FragColor;
|
|
layout(binding=0) uniform sampler2D ExposureTexture;
|
|
|
|
void main()
|
|
{
|
|
#if __VERSION__ < 400
|
|
ivec2 size = textureSize(ExposureTexture, 0);
|
|
ivec2 tl = max(ivec2(TexCoord * vec2(size) - 0.5), ivec2(0));
|
|
ivec2 br = min(tl + ivec2(1), size - ivec2(1));
|
|
vec4 values = vec4(
|
|
texelFetch(ExposureTexture, tl, 0).x,
|
|
texelFetch(ExposureTexture, ivec2(tl.x, br.y), 0).x,
|
|
texelFetch(ExposureTexture, ivec2(br.x, tl.y), 0).x,
|
|
texelFetch(ExposureTexture, br, 0).x);
|
|
#else
|
|
vec4 values = textureGather(ExposureTexture, TexCoord);
|
|
#endif
|
|
|
|
FragColor = vec4((values.x + values.y + values.z + values.w) * 0.25, 0.0, 0.0, 1.0);
|
|
}
|