1 files changed, 48 insertions, 0 deletions
diff --git a/source/blender/draw/modes/shaders/edit_overlay_loosevert_vert.glsl b/source/blender/draw/modes/shaders/edit_overlay_loosevert_vert.glsl
new file mode 100644
index 00000000000..3ff76a77da2
--- /dev/null
+++ b/source/blender/draw/modes/shaders/edit_overlay_loosevert_vert.glsl
@@ -0,0 +1,48 @@
+
+/* Solid Wirefram implementation
+ * Mike Erwin, Clément Foucault */
+
+/* This shader follows the principles of
+ * http://developer.download.nvidia.com/SDK/10/direct3d/Source/SolidWireframe/Doc/SolidWireframe.pdf */
+
+uniform mat4 ModelViewProjectionMatrix;
+uniform vec2 viewportSize;
+
+in vec3 pos;
+in ivec4 data;
+
+/* these are the same for all vertices
+ * and does not need interpolation */
+flat out ivec3 flag;
+flat out vec4 faceColor;
+flat out int clipCase;
+
+/* See fragment shader */
+noperspective out vec4 eData1;
+flat out vec4 eData2;
+
+/* project to screen space */
+vec2 proj(vec4 pos)
+{
+	return (0.5 * (pos.xy / pos.w) + 0.5) * viewportSize;
+}
+
+void main()
+{
+	clipCase = 0;
+
+	vec4 pPos = ModelViewProjectionMatrix * vec4(pos, 1.0);
+
+	/* there is no face */
+	faceColor = vec4(0.0);
+
+	/* only verterx position 0 is used */
+	eData1 = eData2 = vec4(1e10);
+	eData2.zw = proj(pPos);
+
+	flag = ivec3(0);
+	flag[0] = (data.x << 8);
+
+	gl_PointSize = sizeEdgeFix;
+	gl_Position = pPos;
+}