1 files changed, 52 insertions, 0 deletions
diff --git a/source/blender/draw/modes/shaders/object_particle_dot_frag.glsl b/source/blender/draw/modes/shaders/object_particle_dot_frag.glsl
new file mode 100644
index 00000000000..e8bf7884701
--- /dev/null
+++ b/source/blender/draw/modes/shaders/object_particle_dot_frag.glsl
@@ -0,0 +1,52 @@
+
+uniform vec3 color;
+uniform vec3 outlineColor;
+uniform sampler1D ramp;
+
+in vec4 radii;
+flat in float finalVal;
+
+out vec4 fragColor;
+
+void main() {
+	float dist = length(gl_PointCoord - vec2(0.5));
+
+// transparent outside of point
+// --- 0 ---
+// smooth transition
+// --- 1 ---
+// pure outline color
+// --- 2 ---
+// smooth transition
+// --- 3 ---
+// pure point color
+// ...
+// dist = 0 at center of point
+
+	float midStroke = 0.5 * (radii[1] + radii[2]);
+
+	if (dist > midStroke) {
+		if (finalVal < 0.0) {
+			fragColor.rgb = outlineColor;
+		}
+		else {
+			fragColor.rgb = texture(ramp, finalVal).rgb;
+		}
+
+		fragColor.a = mix(1.0, 0.0, smoothstep(radii[1], radii[0], dist));
+	}
+	else {
+		if (finalVal < 0.0) {
+			fragColor.rgb = mix(color, outlineColor, smoothstep(radii[3], radii[2], dist));
+		}
+		else {
+			fragColor.rgb = texture(ramp, finalVal).rgb;
+		}
+
+		fragColor.a = 1.0;
+	}
+
+	if (fragColor.a == 0.0) {
+		discard;
+	}
+}