Printbed textures generated from svg files

resources/shaders/printbed.fs

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+#version 110
+
+const vec3 back_color_dark = vec3(0.235, 0.235, 0.235);
+const vec3 back_color_light = vec3(0.365, 0.365, 0.365);
+
+uniform sampler2D texture;
+uniform bool transparent_background;
+
+varying vec2 tex_coords;
+
+void main()
+{
+    // calculates radial gradient
+    vec3 back_color = vec3(mix(back_color_light, back_color_dark, smoothstep(0.0, 0.5, length(abs(tex_coords.xy) - vec2(0.5)))));
+
+    vec4 fore_color = texture2D(texture, tex_coords);
+
+    // blends foreground with background
+    gl_FragColor = vec4(mix(back_color, fore_color.rgb, fore_color.a), transparent_background ? fore_color.a : 1.0);
+}

resources/shaders/printbed.vs

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+#version 110
+
+attribute vec2 v_tex_coords;
+
+varying vec2 tex_coords;
+
+void main()
+{
+    gl_Position = ftransform();
+    tex_coords = v_tex_coords;
+}