Differential D17089 Diff 60052 source/blender/draw/engines/overlay/shaders/overlay_background_frag.glsl

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	#pragma BLENDER_REQUIRE(common_math_lib.glsl)			#pragma BLENDER_REQUIRE(common_math_lib.glsl)

	/* 4x4 bayer matrix prepared for 8bit UNORM precision error. */			/* 4x4 bayer matrix prepared for 8bit UNORM precision error. */
	#define P(x) (((x + 0.5) * (1.0 / 16.0) - 0.5) * (1.0 / 255.0))			#define P(x) (((x + 0.5) * (1.0 / 16.0) - 0.5) * (1.0 / 255.0))

				float dither(void)
				{
				/* NOTE(Metal): Declaring constant array in function scope to avoid increasing local shader
				* memory pressure. */
	const vec4 dither_mat4x4[4] = vec4[4](vec4(P(0.0), P(8.0), P(2.0), P(10.0)),			const vec4 dither_mat4x4[4] = vec4[4](vec4(P(0.0), P(8.0), P(2.0), P(10.0)),
	vec4(P(12.0), P(4.0), P(14.0), P(6.0)),			vec4(P(12.0), P(4.0), P(14.0), P(6.0)),
	vec4(P(3.0), P(11.0), P(1.0), P(9.0)),			vec4(P(3.0), P(11.0), P(1.0), P(9.0)),
	vec4(P(15.0), P(7.0), P(13.0), P(5.0)));			vec4(P(15.0), P(7.0), P(13.0), P(5.0)));

	float dither(void)
	{
	ivec2 co = ivec2(gl_FragCoord.xy) % 4;			ivec2 co = ivec2(gl_FragCoord.xy) % 4;
	return dither_mat4x4[co.x][co.y];			return dither_mat4x4[co.x][co.y];
	}			}

	void main()			void main()
	{			{
	/* The blend equation is:			/* The blend equation is:
	* `result.rgb = SRC.rgb * (1 - DST.a) + DST.rgb * (SRC.a)`			* `result.rgb = SRC.rgb * (1 - DST.a) + DST.rgb * (SRC.a)`
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