Use calibration for preview

data/debayer.frag

@@ -4,6 +4,7 @@ precision highp float;
 
 uniform sampler2D texture;
 uniform mat3 color_matrix;
+uniform float inv_gamma;
 #ifdef BITS_10
 uniform float row_length;
 uniform float padding_ratio;
@@ -62,13 +63,13 @@ main()
         // should be an uniform
         vec3 corrected = color - 0.02;
 
-#if defined(COLORSPACE_RAW)
+        /*
         // Fast SRGB estimate. See https://mimosa-pudica.net/fast-gamma/
-        vec3 srgb_color =
+        vec3 gamma_color =
                 (vec3(1.138) * inversesqrt(corrected) - vec3(0.138)) * corrected;
+        */
+        color = color * color_matrix;
 
-        gl_FragColor = vec4(srgb_color, 1);
-#elif defined(COLORSPACE_SRGB)
-        gl_FragColor = vec4(color, 1);
-#endif
+        vec3 gamma_color = pow(color, vec3(inv_gamma));
+        gl_FragColor = vec4(gamma_color, 1);
 }