Differential D12170 Diff 40821 source/blender/draw/engines/overlay/shaders/paint_weight_frag.glsl

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source/blender/draw/engines/overlay/shaders/paint_weight_frag.glsl


in vec2 weight_interp; /* (weight, alert) */		in vec2 weight_interp; /* (weight, alert) */
		in float color_fac;
		jbakkerAuthorUnsubmitted Not Done Inline Actions Need to find a better name for this. It is the factor between showing a hint of the geometry (0.0) and the weight color (1.0). jbakker: Need to find a better name for this. It is the factor between showing a hint of the geometry (0.

out vec4 fragColor;		out vec4 fragColor;

uniform float opacity = 1.0;		uniform float opacity = 1.0;
uniform sampler1D colorramp;		uniform sampler1D colorramp;

uniform bool useAlphaBlend = false;
uniform bool drawContours = false;		uniform bool drawContours = false;

float contours(float value, float steps, float width_px, float max_rel_width, float gradient)		float contours(float value, float steps, float width_px, float max_rel_width, float gradient)
{		{
/* Minimum visible and minimum full strength line width in screen space for fade out. */		/* Minimum visible and minimum full strength line width in screen space for fade out. */
const float min_width_px = 1.3, fade_width_px = 2.3;		const float min_width_px = 1.3, fade_width_px = 2.3;
/* Line is thinner towards the increase in the weight gradient by this factor. */		/* Line is thinner towards the increase in the weight gradient by this factor. */
const float hi_bias = 2.0;		const float hi_bias = 2.0;
▲ Show 20 Lines • Show All 45 Lines • ▼ Show 20 Lines	vec4 contour_grid(float weight, float weight_gradient)
/* White lines for 0.1 and 0.01, and black for 0.001 */		/* White lines for 0.1 and 0.01, and black for 0.001 */
vec4 grid = vec4(1.0) * max(grid10, grid100);		vec4 grid = vec4(1.0) * max(grid10, grid100);

grid.a = max(grid.a, grid1000);		grid.a = max(grid.a, grid1000);

return grid * clamp((weight_gradient - flt_eps) / flt_eps, 0.0, 1.0);		return grid * clamp((weight_gradient - flt_eps) / flt_eps, 0.0, 1.0);
}		}

		vec4 apply_color_fac(vec4 color_in)
		jbakkerAuthorUnsubmitted Not Done Inline Actions Find better name. jbakker: Find better name.
		{
		vec4 color = color_in;
		color.rgb = max(vec3(0.005), color_in.rgb) * color_fac;
		return color;
		}

void main()		void main()
{		{
float alert = weight_interp.y;		float alert = weight_interp.y;
vec4 color;		vec4 color;

/* Missing vertex group alert color. Uniform in practice. */		/* Missing vertex group alert color. Uniform in practice. */
if (alert > 1.1) {		if (alert > 1.1) {
color = colorVertexMissingData;		color = apply_color_fac(colorVertexMissingData);
}		}
/* Weights are available */		/* Weights are available */
else {		else {
float weight = weight_interp.x;		float weight = weight_interp.x;
vec4 weight_color = texture(colorramp, weight, 0);		vec4 weight_color = texture(colorramp, weight, 0);
		weight_color = apply_color_fac(weight_color);

/* Contour display */		/* Contour display */
if (drawContours) {		if (drawContours) {
/* This must be executed uniformly for all fragments */		/* This must be executed uniformly for all fragments */
float weight_gradient = length(vec2(dFdx(weight), dFdy(weight)));		float weight_gradient = length(vec2(dFdx(weight), dFdy(weight)));

vec4 grid = contour_grid(weight, weight_gradient);		vec4 grid = contour_grid(weight, weight_gradient);

weight_color = grid + weight_color * (1 - grid.a);		weight_color = grid + weight_color * (1 - grid.a);
}		}

/* Zero weight alert color. Nonlinear blend to reduce impact. */		/* Zero weight alert color. Nonlinear blend to reduce impact. */
color = mix(weight_color, colorVertexUnreferenced, alert * alert);		vec4 color_unreferenced = apply_color_fac(colorVertexUnreferenced);
		color = mix(weight_color, color_unreferenced, alert * alert);
}		}

if (useAlphaBlend) {
fragColor = vec4(color.rgb, opacity);		fragColor = vec4(color.rgb, opacity);
}		}
else {
/* mix with 1.0 -> is like opacity when using multiply blend mode */
fragColor = vec4(mix(vec3(1.0), color.rgb, opacity), 1.0);
}
}