1 files changed, 57 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/eevee_culling_select_comp.glsl b/source/blender/draw/engines/eevee/shaders/eevee_culling_select_comp.glsl
new file mode 100644
index 00000000000..138e54b8bae
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/eevee_culling_select_comp.glsl
@@ -0,0 +1,57 @@
+
+/**
+ * Select the visible items inside the active view and put them inside the sorting buffer.
+ */
+
+#pragma BLENDER_REQUIRE(common_debug_lib.glsl)
+#pragma BLENDER_REQUIRE(common_view_lib.glsl)
+#pragma BLENDER_REQUIRE(common_math_geom_lib.glsl)
+#pragma BLENDER_REQUIRE(common_intersection_lib.glsl)
+#pragma BLENDER_REQUIRE(eevee_light_lib.glsl)
+#pragma BLENDER_REQUIRE(eevee_shader_shared.hh)
+
+layout(local_size_x = CULLING_ITEM_BATCH) in;
+
+layout(std430, binding = 0) readonly restrict buffer lights_buf
+{
+  LightData lights[];
+};
+
+layout(std430, binding = 1) restrict buffer culling_buf
+{
+  CullingData culling;
+};
+
+layout(std430, binding = 2) restrict buffer key_buf
+{
+  uint keys[];
+};
+
+void main()
+{
+  uint l_idx = gl_GlobalInvocationID.x;
+  if (l_idx >= culling.items_count) {
+    return;
+  }
+
+  LightData light = lights[l_idx];
+
+  Sphere sphere;
+  switch (light.type) {
+    case LIGHT_SUN:
+      sphere = Sphere(cameraPos, ViewFar * 2.0);
+      break;
+    case LIGHT_SPOT:
+      /* TODO cone culling. */
+    case LIGHT_RECT:
+    case LIGHT_ELLIPSE:
+    case LIGHT_POINT:
+      sphere = Sphere(light._position, light.influence_radius_max);
+      break;
+  }
+
+  if (intersect_view(sphere)) {
+    uint index = atomicAdd(culling.visible_count, 1);
+    keys[index] = l_idx;
+  }
+}