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Add dynamic exposure correction (#12959)

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* Add uniform for frame delta time
* Adjust exposure in logarithmic (EV) space
* Add network support and LUA API
* Add testing mod
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x2048 2023-01-06 22:33:25 +01:00 • committed by GitHub
parent 2715cc8bf6
commit 6d45c243f8
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GPG key ID: 4AEE18F83AFDEB23
29 changed files with 567 additions and 71 deletions
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13
client/shaders/extract_bloom/opengl_fragment.glsl
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@ -1,8 +1,12 @@
#define rendered texture0
struct ExposureParams {
float compensationFactor;
};
uniform sampler2D rendered;
uniform mediump float exposureFactor;
uniform mediump float bloomStrength;
uniform ExposureParams exposureParams;
#ifdef GL_ES
varying mediump vec2 varTexCoord;
@ -10,6 +14,7 @@ varying mediump vec2 varTexCoord;
centroid varying vec2 varTexCoord;
#endif
varying float exposure;
void main(void)
{
@ -18,10 +23,6 @@ void main(void)
// translate to linear colorspace (approximate)
color = pow(color, vec3(2.2));
// Scale colors by luminance to amplify bright colors
// in SDR textures.
float luminance = dot(color, vec3(0.213, 0.515, 0.072));
luminance *= luminance;
color *= luminance * exposureFactor * bloomStrength;
color *= pow(2., exposure) * exposureParams.compensationFactor * bloomStrength;
gl_FragColor = vec4(color, 1.0); // force full alpha to avoid holes in the image.
}