stuff

modules/wallpaper-engine/shaders/common_composite.h

@@ -0,0 +1,50 @@
+
+#include "common.h"
+#include "common_blending.h"
+
+uniform float g_CompositeAlpha; // {"material":"compositealpha","label":"ui_editor_properties_alpha","default":1,"range":[0.0, 2.0]}
+uniform vec2 g_CompositeOffset; // {"material":"compositeoffset","label":"ui_editor_properties_offset","default":"0 0","linked":true,"range":[-10.0, 10.0]}
+uniform vec3 g_CompositeColor; // {"material":"compositecolor","label":"ui_editor_properties_color","default":"1 1 1","type":"color"}
+
+vec2 ApplyCompositeOffset(vec2 texCoords, vec2 textureResolution)
+{
+#if COMPOSITE != 0
+	return texCoords + g_CompositeOffset / textureResolution;
+#else
+	return texCoords;
+#endif
+}
+
+vec4 ApplyComposite(vec4 original, vec4 effect)
+{
+#if COMPOSITEMONO == 1
+	effect.rgb = CAST3(greyscale(effect.rgb));
+#endif
+
+	effect.rgb *= g_CompositeColor;
+
+	// Only return the effect
+#if COMPOSITE == 0
+	return effect;
+#endif
+
+	// Overlay the effect with a blend mode
+#if COMPOSITE == 1
+	effect.rgb = ApplyBlending(BLENDMODE, original.rgb, effect.rgb, effect.a * g_CompositeAlpha);
+	effect.a = max(effect.a * saturate(g_CompositeAlpha), original.a);
+#endif
+
+	// Put the effect below the original
+#if COMPOSITE == 2
+	effect.a *= saturate(g_CompositeAlpha);
+	effect = mix(effect, original, original.a);
+#endif
+
+	// Turn the pixels where the original is invisible
+#if COMPOSITE == 3
+	effect.a *= saturate(g_CompositeAlpha);
+	effect.a *= 1.0 - original.a;
+#endif
+
+	return effect;
+}