1 files changed, 22 insertions, 0 deletions
diff --git a/source/blender/draw/modes/shaders/edit_mesh_overlay_mix_frag.glsl b/source/blender/draw/modes/shaders/edit_mesh_overlay_mix_frag.glsl
new file mode 100644
index 00000000000..8f94a105332
--- /dev/null
+++ b/source/blender/draw/modes/shaders/edit_mesh_overlay_mix_frag.glsl
@@ -0,0 +1,22 @@
+
+out vec4 FragColor;
+
+uniform sampler2D wireColor;
+uniform sampler2D wireDepth;
+uniform sampler2D sceneDepth;
+uniform float alpha;
+
+void main()
+{
+	ivec2 uv = ivec2(gl_FragCoord.xy);
+	float wire_depth = texelFetch(wireDepth, uv, 0).r;
+	float scene_depth = texelFetch(sceneDepth, uv, 0).r;
+	vec4 wire_color = texelFetch(wireColor, uv, 0).rgba;
+
+	FragColor = wire_color;
+
+	/* Modulate alpha if occluded */
+	if (wire_depth > scene_depth) {
+		FragColor.a *= alpha;
+	}
+}