Merge pull request #66327 from Calinou/debanding-fix-adjustments-3.x

drivers/gles3/shaders/tonemap.glsl

@@ -467,12 +467,6 @@ void main() {
 	color.rgb = apply_cas(color.rgb, full_exposure, uv_interp, sharpen_intensity);
 #endif
 
-#ifdef USE_DEBANDING
-	// For best results, debanding should be done before tonemapping.
-	// Otherwise, we're adding noise to an already-quantized image.
-	color.rgb += screen_space_dither(gl_FragCoord.xy);
-#endif
-
 	// Early Tonemap & SRGB Conversion; note that Linear tonemapping does not clamp to [0, 1]; some operations below expect a [0, 1] range and will clamp
 	color.rgb = apply_tonemapping(color.rgb, white);
 
@@ -507,6 +501,12 @@ void main() {
 	color.rgb = apply_color_correction(color.rgb, color_correction);
 #endif
 
+#ifdef USE_DEBANDING
+	// Debanding should be done at the end of tonemapping, but before writing to the LDR buffer.
+	// Otherwise, we're adding noise to an already-quantized image.
+	color.rgb += screen_space_dither(gl_FragCoord.xy);
+#endif
+
 	frag_color = color;
 
 #ifdef DISABLE_ALPHA