https://github.com/WWBN/AVideo/issues/8713

node_modules/three/examples/js/shaders/ToneMapShader.js

@@ -0,0 +1,75 @@
+/**
+ * Full-screen tone-mapping shader based on http://www.cis.rit.edu/people/faculty/ferwerda/publications/sig02_paper.pdf
+ */
+
+THREE.ToneMapShader = {
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'averageLuminance': { value: 1.0 },
+		'luminanceMap': { value: null },
+		'maxLuminance': { value: 16.0 },
+		'minLuminance': { value: 0.01 },
+		'middleGrey': { value: 0.6 }
+	},
+
+	vertexShader: [
+
+		'varying vec2 vUv;',
+
+		'void main() {',
+
+		'	vUv = uv;',
+		'	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',
+
+		'}'
+
+	].join( '\n' ),
+
+	fragmentShader: [
+
+		'#include <common>',
+
+		'uniform sampler2D tDiffuse;',
+
+		'varying vec2 vUv;',
+
+		'uniform float middleGrey;',
+		'uniform float minLuminance;',
+		'uniform float maxLuminance;',
+		'#ifdef ADAPTED_LUMINANCE',
+		'	uniform sampler2D luminanceMap;',
+		'#else',
+		'	uniform float averageLuminance;',
+		'#endif',
+
+		'vec3 ToneMap( vec3 vColor ) {',
+		'	#ifdef ADAPTED_LUMINANCE',
+		// Get the calculated average luminance
+		'		float fLumAvg = texture2D(luminanceMap, vec2(0.5, 0.5)).r;',
+		'	#else',
+		'		float fLumAvg = averageLuminance;',
+		'	#endif',
+
+		// Calculate the luminance of the current pixel
+		'	float fLumPixel = linearToRelativeLuminance( vColor );',
+
+		// Apply the modified operator (Eq. 4)
+		'	float fLumScaled = (fLumPixel * middleGrey) / max( minLuminance, fLumAvg );',
+
+		'	float fLumCompressed = (fLumScaled * (1.0 + (fLumScaled / (maxLuminance * maxLuminance)))) / (1.0 + fLumScaled);',
+		'	return fLumCompressed * vColor;',
+		'}',
+
+		'void main() {',
+
+		'	vec4 texel = texture2D( tDiffuse, vUv );',
+
+		'	gl_FragColor = vec4( ToneMap( texel.xyz ), texel.w );',
+
+		'}'
+
+	].join( '\n' )
+
+};