Initial commit

Signed-off-by: Slendi <slendi@socopon.com>

assets/linear_srgb.fs

@@ -0,0 +1,18 @@
+precision mediump float;
+
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+uniform sampler2D texture0;
+
+vec3 srgb_to_linear(vec3 c) {
+	bvec3 cutoff = lessThanEqual(c, vec3(0.04045));
+	vec3  low    = c / 12.92;
+	vec3  high   = pow((c + 0.055) / 1.055, vec3(2.4));
+	return mix(high, low, vec3(cutoff));
+}
+
+void main() {
+	vec4 c = texture2D(texture0, fragTexCoord) * fragColor;
+	c.rgb  = srgb_to_linear(c.rgb); // decode to linear
+	gl_FragColor = c;
+}