Differential D12886 Diff 43733 source/blender/gpu/shaders/gpu_shader_2D_nodelink_frag.glsl

Changeset View

Standalone View

source/blender/gpu/shaders/gpu_shader_2D_nodelink_frag.glsl


	in float colorGradient;			in float colorGradient;
	in vec4 finalColor;			in vec4 finalColor;
	in float lineU;			in float lineU;
	flat in float lineLength;			flat in float lineLength;
	flat in float dashFactor;			flat in float dashFactor;
				flat in float dashAlpha;
	flat in int isMainLine;			flat in int isMainLine;

	out vec4 fragColor;			out vec4 fragColor;

	#define DASH_WIDTH 20.0			#define DASH_WIDTH 10.0
	#define ANTIALIAS 1.0			#define ANTIALIAS 1.0
				#define MINIMUM_ALPHA 0.5

	void main()			void main()
	{			{
	fragColor = finalColor;			fragColor = finalColor;

	if ((isMainLine != 0) && (dashFactor < 1.0)) {			if ((isMainLine != 0) && (dashFactor < 1.0)) {
	float distance_along_line = lineLength * lineU;			float distance_along_line = lineLength * lineU;
	float normalized_distance = fract(distance_along_line / DASH_WIDTH);			float normalized_distance = fract(distance_along_line / DASH_WIDTH);

	/* Checking if `normalized_distance <= dashFactor` is already enough for a basic			/* Checking if `normalized_distance <= dashFactor` is already enough for a basic
	* dash, however we want to handle a nice antialias. */			* dash, however we want to handle a nice antialias. */

	float dash_center = DASH_WIDTH * dashFactor * 0.5;			float dash_center = DASH_WIDTH * dashFactor * 0.5;
	float normalized_distance_triangle =			float normalized_distance_triangle =
	1.0 - abs((fract((distance_along_line - dash_center) / DASH_WIDTH)) * 2.0 - 1.0);			1.0 - abs((fract((distance_along_line - dash_center) / DASH_WIDTH)) * 2.0 - 1.0);
	float t = ANTIALIAS / DASH_WIDTH;			float t = ANTIALIAS / DASH_WIDTH;
	float slope = 1.0 / (2.0 * t);			float slope = 1.0 / (2.0 * t);

	float unclamped_alpha = 1.0 - slope * (normalized_distance_triangle - dashFactor + t);			float unclamped_alpha = 1.0 - slope * (normalized_distance_triangle - dashFactor + t);
	float alpha = max(0.0, min(unclamped_alpha, 1.0));			float alpha = max(dashAlpha, min(unclamped_alpha, 1.0));

	fragColor.a *= alpha;			fragColor.a *= alpha;
	}			}

	fragColor.a *= smoothstep(1.0, 0.1, abs(colorGradient));			fragColor.a *= smoothstep(1.0, 0.1, abs(colorGradient));
	}			}