First commit

shaders/old/tonemap.shader

@@ -0,0 +1,70 @@
+/**
+ * Kepler - Core
+ * Copyright (c) 2010 kaj dijkstra STUDIOS
+ * All rights reserved.
+ */
+  
+/**
+ * Author: Kaj Dijksta
+ */
+ 
+    attribute vec3 position;
+    attribute vec2 uv;
+	
+    uniform mat4 viewProjection;
+
+    varying vec2 v_textureCoord;
+
+    void main(void) {
+	
+        v_textureCoord = uv;
+		gl_Position = viewProjection * vec4(position, 1.0);
+		
+    }
+	
+	// #keplerEngine - Split
+	
+	precision highp float;
+
+	uniform sampler2D colorSampler;
+	uniform float exposure;
+	
+	varying vec2 v_textureCoord;
+
+	vec3 HDR_ACES(const vec3 x) {
+		// Narkowicz 2015, "ACES Filmic Tone Mapping Curve"
+		const float a = 2.51;
+		const float b = 0.03;
+		const float c = 2.43;
+		const float d = 0.59;
+		const float e = 0.14;
+		return (x * (a * x + b)) / (x * (c * x + d) + e);
+	}
+
+	vec3 tonemap(const vec3 x) {
+		return HDR_ACES(x);
+	}
+	
+	float linearToSRGB(float c) {
+		return (c <= 0.0031308) ? c * 12.92 : (pow(abs(c), 1.0 / 2.4) * 1.055) - 0.055;
+	}
+
+	vec3 linearToSRGB(vec3 c) {
+		return vec3(linearToSRGB(c.r), linearToSRGB(c.g), linearToSRGB(c.b));
+	}
+	
+	void main() {
+		
+		vec3 pbr = texture2D( colorSampler, v_textureCoord ).rgb;
+			gl_FragColor = vec4( pbr , 1.0 );
+		//pbr.rgb *= exposure;
+	
+		//if(v_textureCoord.x < 0.5) {
+		//	gl_FragColor = vec4( linearToSRGB( tonemap(pbr) ), 1.0 );
+		//} else {
+		//	gl_FragColor = vec4( 
+		//}
+		
+	}
+
+