1 files changed, 97 insertions, 0 deletions
diff --git a/source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl b/source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl
new file mode 100644
index 00000000000..8759ef80888
--- /dev/null
+++ b/source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl
@@ -0,0 +1,97 @@
+
+uniform sampler2D depthTex;
+uniform float alpha = 1.0;
+uniform ivec4 dataMask = ivec4(0xFF);
+
+in ivec4 data;
+in vec3 pos;
+#ifndef FACEDOT
+in vec3 vnor;
+#else
+in vec4 norAndFlag;
+#  define vnor norAndFlag.xyz
+#endif
+
+out vec4 finalColor;
+#ifdef EDGE
+out vec4 finalColorOuter;
+#endif
+#ifdef USE_GEOM_SHADER
+out int selectOveride;
+#endif
+
+bool test_occlusion()
+{
+  vec3 ndc = (gl_Position.xyz / gl_Position.w) * 0.5 + 0.5;
+  return ndc.z > texture(depthTex, ndc.xy).r;
+}
+
+void main()
+{
+  GPU_INTEL_VERTEX_SHADER_WORKAROUND
+
+  vec3 world_pos = point_object_to_world(pos);
+  gl_Position = point_world_to_ndc(world_pos);
+
+  ivec4 m_data = data & dataMask;
+
+#if defined(VERT)
+  finalColor = EDIT_MESH_vertex_color(m_data.y);
+  gl_PointSize = sizeVertex * 2.0;
+  /* Make selected and active vertex always on top. */
+  if ((data.x & VERT_SELECTED) != 0) {
+    gl_Position.z -= 1e-7;
+  }
+  if ((data.x & VERT_ACTIVE) != 0) {
+    gl_Position.z -= 1e-7;
+  }
+
+  bool occluded = test_occlusion();
+
+#elif defined(EDGE)
+#  ifdef FLAT
+  finalColor = EDIT_MESH_edge_color_inner(m_data.y);
+  selectOveride = 1;
+#  else
+  finalColor = EDIT_MESH_edge_vertex_color(m_data.y);
+  selectOveride = (m_data.y & EDGE_SELECTED);
+#  endif
+
+  float crease = float(m_data.z) / 255.0;
+  float bweight = float(m_data.w) / 255.0;
+  finalColorOuter = EDIT_MESH_edge_color_outer(m_data.y, m_data.x, crease, bweight);
+
+  bool occluded = false; /* Done in fragment shader */
+
+#elif defined(FACE)
+  finalColor = EDIT_MESH_face_color(m_data.x);
+  bool occluded = true;
+
+#elif defined(FACEDOT)
+  finalColor = EDIT_MESH_facedot_color(norAndFlag.w);
+
+  /* Bias Facedot Z position in clipspace. */
+  gl_Position.z -= 0.00035;
+  gl_PointSize = sizeFaceDot;
+
+  bool occluded = test_occlusion();
+
+#endif
+
+  finalColor.a *= (occluded) ? alpha : 1.0;
+
+#if !defined(FACE)
+  /* Facing based color blend */
+  vec3 vpos = point_world_to_view(world_pos);
+  vec3 view_normal = normalize(normal_object_to_view(vnor) + 1e-4);
+  vec3 view_vec = (ProjectionMatrix[3][3] == 0.0) ? normalize(vpos) : vec3(0.0, 0.0, 1.0);
+  float facing = dot(view_vec, view_normal);
+  facing = 1.0 - abs(facing) * 0.2;
+
+  finalColor.rgb = mix(colorEditMeshMiddle.rgb, finalColor.rgb, facing);
+#endif
+
+#ifdef USE_WORLD_CLIP_PLANES
+  world_clip_planes_calc_clip_distance(world_pos);
+#endif
+}