git-svn-id: svn://db.shs.com.ru/libs@47 a8b55f48-bf90-11e4-a774-851b48703e85

qglview/shaders/hdr.frag

@@ -0,0 +1,27 @@
+#version 150
+
+uniform sampler2D t0;
+uniform float exposure;
+
+float tA = 0.15;
+float tB = 0.50;
+float tC = 0.10;
+float tD = 0.20;
+float tE = 0.02;
+float tF = 0.30;
+float tW = 11.2;
+
+vec3 Uncharted2Tonemap(vec3 x) {
+	return ((x*(tA*x+tC*tB)+tD*tE)/(x*(tA*x+tB)+tD*tF))-tE/tF;
+}
+
+void main(void) {
+	vec3 inColor = texture(t0, qgl_FragTexture.xy).rgb;
+	inColor *= exposure;
+	float ExposureBias = 1;
+	vec3 curr = Uncharted2Tonemap(ExposureBias*inColor);
+	vec3 whiteScale = 1 / Uncharted2Tonemap(vec3(tW));
+	vec3 color = curr * whiteScale;
+	vec3 retColor = pow(color, vec3(1 / 2.2));
+	qgl_FragData[0].rgb = retColor;
+}