Differential D4638 Diff 15958 source/blender/draw/modes/shaders/common_colormanagement_lib.glsl

Changeset View

Standalone View

				float linearrgb_to_srgb(float c)
				{
				if (c < 0.0031308) {
				return (c < 0.0) ? 0.0 : c * 12.92;
				}
				else {
				return 1.055 * pow(c, 1.0 / 2.4) - 0.055;
				}
				}

				vec4 texture_read_as_srgb(sampler2D tex, bool premultiplied, vec2 co)
				{
				/* By convention image textures return scene linear colors, but
				* overlays still assume srgb. */
				vec4 color = texture(tex, co);
				/* Unpremultiply if stored multiplied, since straight alpha is expected by shaders. */
				if (premultiplied && !(color.a == 0.0 \|\| color.a == 1.0)) {
				color.rgb = color.rgb / color.a;
				}
				color.r = linearrgb_to_srgb(color.r);
				color.g = linearrgb_to_srgb(color.g);
				color.b = linearrgb_to_srgb(color.b);
				return color;
				}