Differential D2889 Diff 11446 source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_prepare_frag.glsl

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source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_prepare_frag.glsl

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				uniform mat4 ProjectionMatrix;
				uniform mat4 ViewMatrix;

				/* ******************************************************************* */
				/* create rim and mask */
				/* ******************************************************************* */
				uniform sampler2D strokeColor;
				uniform sampler2D strokeDepth;
				uniform vec2 Viewport;

				uniform int offset[2];
				uniform vec3 rim_color;
				uniform vec3 mask_color;

				uniform vec3 loc;
				uniform float pixsize; /* rv3d->pixsize */
				uniform float pixelsize; /* U.pixelsize */
				uniform float pixfactor;

				float defaultpixsize = pixsize * pixelsize * (1000.0 / pixfactor);
				vec2 noffset = vec2(offset[0], offset[1]);

				out vec4 FragColor;

				void main()
				{
				vec2 uv = vec2(gl_FragCoord.xy);
				vec4 nloc = ProjectionMatrix * ViewMatrix * vec4(loc.xyz, 1.0);

				float dx = (ProjectionMatrix[3][3] == 0.0) ? (noffset[0] / (nloc.z * defaultpixsize)) : (noffset[0] / defaultpixsize);
				float dy = (ProjectionMatrix[3][3] == 0.0) ? (noffset[1] / (nloc.z * defaultpixsize)) : (noffset[1] / defaultpixsize);

				float stroke_depth = texelFetch(strokeDepth, ivec2(uv.xy), 0).r;
				vec4 src_pixel= texelFetch(strokeColor, ivec2(uv.xy), 0);
				vec4 offset_pixel= texelFetch(strokeColor, ivec2(uv.x - dx, uv.y - dy), 0);
				vec4 outcolor;

				/* is transparent */
				if (src_pixel.a == 0.0f) {
				discard;
				}
				/* check inside viewport */
				else if ((uv.x - dx < 0) \|\| (uv.x - dx > Viewport[0])) {
				discard;
				}
				else if ((uv.y - dy < 0) \|\| (uv.y - dy > Viewport[1])) {
				discard;
				}
				/* pixel is equal to mask color, keep */
				else if (src_pixel.rgb == mask_color.rgb) {
				discard;
				}
				else {
				if ((src_pixel.a > 0) && (offset_pixel.a > 0)) {
				discard;
				}
				else {
				outcolor = vec4(rim_color, 1.0);
				}
				}

				gl_FragDepth = stroke_depth;
				FragColor = outcolor;
				}