Cleanup

paint/shaders/mask_merge.kong

@@ -0,0 +1,102 @@
+
+#[set(everything)]
+const constants: {
+	opac: float;
+	blending: int;
+};
+
+#[set(everything)]
+const sampler_linear: sampler;
+
+#[set(everything)]
+const tex0: tex2d;
+
+#[set(everything)]
+const texa: tex2d;
+
+struct vert_in {
+	pos: float2;
+}
+
+struct vert_out {
+	pos: float4;
+	tex: float2;
+}
+
+fun mask_merge_vert(input: vert_in): vert_out {
+	var output: vert_out;
+	output.tex = input.pos.xy * 0.5 + 0.5;
+	output.tex.y = 1.0 - output.tex.y;
+	output.pos = float4(input.pos.xy, 0.0, 1.0);
+	return output;
+}
+
+fun mask_merge_frag(input: vert_out): float4 {
+	var col0: float = sample_lod(tex0, sampler_linear, input.tex, 0.0).r;
+	var cola: float = sample_lod(texa, sampler_linear, input.tex, 0.0).r;
+	var str: float = constants.opac;
+	var out_color: float = 0.0;
+
+	if (constants.blending == 0) { // Mix
+		out_color = lerp(cola, col0, str);
+	}
+	/*else*/ if (constants.blending == 1) { // Darken
+		out_color = lerp(cola, min(cola, col0), str);
+	}
+	/*else*/ if (constants.blending == 2) { // Multiply
+		out_color = lerp(cola, cola * col0, str);
+	}
+	/*else*/ if (constants.blending == 3) { // Burn
+		out_color = lerp(cola, 1.0 - (1.0 - cola) / col0, str);
+	}
+	/*else*/ if (constants.blending == 4) { // Lighten
+		out_color = max(cola, col0 * str);
+	}
+	/*else*/ if (constants.blending == 5) { // Screen
+		out_color = (1.0 - ((1.0 - str) + str * (1.0 - col0)) * (1.0 - cola));
+	}
+	/*else*/ if (constants.blending == 6) { // Dodge
+		out_color = lerp(cola, cola / (1.0 - col0), str);
+	}
+	/*else*/ if (constants.blending == 7) { // Add
+		out_color = lerp(cola, cola + col0, str);
+	}
+	/*else*/ if (constants.blending == 8) { // Overlay
+		// out_color = lerp(cola, cola < 0.5 ? 2.0 * cola * col0 : 1.0 - 2.0 * (1.0 - cola) * (1.0 - col0), str);
+
+		////
+		//if (cola < 0.5) {
+			out_color = lerp(cola, 2.0 * cola * col0, str);
+		//}
+		//else {
+		//	out_color = lerp(cola, 1.0 - 2.0 * (1.0 - cola) * (1.0 - col0), str);
+		//}
+		////
+	}
+	/*else*/ if (constants.blending == 9) { // Soft Light
+		out_color = ((1.0 - str) * cola + str * ((1.0 - cola) * col0 * cola + cola * (1.0 - (1.0 - col0) * (1.0 - cola))));
+	}
+	/*else*/ if (constants.blending == 10) { // Linear Light
+		out_color = (cola + str * (2.0 * (col0 - 0.5)));
+	}
+	/*else*/ if (constants.blending == 11) { // Difference
+		out_color = lerp(cola, abs(cola - col0), str);
+	}
+	/*else*/ if (constants.blending == 12) { // Subtract
+		out_color = lerp(cola, cola - col0, str);
+	}
+	/*else*/ if (constants.blending == 13) { // Divide
+		out_color = (1.0 - str) * cola + str * cola / col0;
+	}
+	/*else*/ if (constants.blending == 14) { // Hue, Saturation, Color, Value
+		out_color = lerp(cola, col0, str);
+	}
+
+	return float4(out_color, out_color, out_color, 1.0);
+}
+
+#[pipe]
+struct pipe {
+	vertex = mask_merge_vert;
+	fragment = mask_merge_frag;
+}