Differential D15680 Diff 54643 source/blender/draw/engines/eevee_next/shaders/eevee_depth_of_field_stabilize_comp.glsl

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source/blender/draw/engines/eevee_next/shaders/eevee_depth_of_field_stabilize_comp.glsl

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	return vector.xy * vec2(textureSize(color_tx, 0));	return vector.xy * vec2(textureSize(color_tx, 0));
	}	}

	/* Load color using a special filter to avoid loosing detail.	/* Load color using a special filter to avoid losing detail.
	* \a texel is sample position with subpixel accuracy. */	* \a texel is sample position with subpixel accuracy. */
	DofSample dof_sample_history(vec2 input_texel)	DofSample dof_sample_history(vec2 input_texel)
	{	{
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	/* 5% of incoming color by default. */	/* 5% of incoming color by default. */
	float blend = 0.05;	float blend = 0.05;
	/* Blend less history if the pixel has substential velocity. */	/* Blend less history if the pixel has substantial velocity. */
	/* NOTE(fclem): velocity threshold multiplied by 2 because of half resolution. */	/* NOTE(fclem): velocity threshold multiplied by 2 because of half resolution. */
	blend = mix(blend, 0.20, saturate(velocity * 0.02 * 2.0));	blend = mix(blend, 0.20, saturate(velocity * 0.02 * 2.0));
	/**	/**
	* "High Quality Temporal Supersampling" by Brian Karis at Siggraph 2014 (Slide 43)	* "High Quality Temporal Supersampling" by Brian Karis at Siggraph 2014 (Slide 43)
	* Bias towards history if incomming pixel is near clamping. Reduces flicker.	* Bias towards history if incoming pixel is near clamping. Reduces flicker.
	*/	*/
	float distance_to_luma_clip = min_v2(vec2(luma_history - luma_min, luma_max - luma_history));	float distance_to_luma_clip = min_v2(vec2(luma_history - luma_min, luma_max - luma_history));
	/* Divide by bbox size to get a factor. 2 factor to compensate the line above. */	/* Divide by bbox size to get a factor. 2 factor to compensate the line above. */
	distance_to_luma_clip = 2.0 safe_rcp(luma_max - luma_min);	distance_to_luma_clip = 2.0 safe_rcp(luma_max - luma_min);
	/* Linearly blend when history gets bellow to 25% of the bbox size. */	/* Linearly blend when history gets below to 25% of the bbox size. */
	blend = saturate(distance_to_luma_clip 4.0 + 0.1);	blend = saturate(distance_to_luma_clip 4.0 + 0.1);
	/* Progressively discard history until history CoC is twice as big as the filtered CoC.	/* Progressively discard history until history CoC is twice as big as the filtered CoC.
	* Note we use absolute diff here because we are not comparing neighbors and thus do not risk to	* Note we use absolute diff here because we are not comparing neighbors and thus do not risk to
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	DofSample dst = dof_sample_history(history_texel);	DofSample dst = dof_sample_history(history_texel);

	/* Get local color bounding box of source neighboorhood. */	/* Get local color bounding box of source neighborhood. */
	DofNeighborhoodMinMax bbox = dof_neighbor_boundbox();	DofNeighborhoodMinMax bbox = dof_neighbor_boundbox();

	float blend = dof_history_blend_factor(velocity, history_texel, bbox, src, dst);	float blend = dof_history_blend_factor(velocity, history_texel, bbox, src, dst);
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