1 files changed, 43 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/eevee_surface_velocity_frag.glsl b/source/blender/draw/engines/eevee/shaders/eevee_surface_velocity_frag.glsl
new file mode 100644
index 00000000000..06e3eea9413
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/eevee_surface_velocity_frag.glsl
@@ -0,0 +1,43 @@
+
+/**
+ * Output two 2D screen space velocity vector from object motion.
+ * There is a separate output for view and camera vectors.
+ * Camera vectors are used for reprojections and view vectors are used for motion blur fx.
+ * xy: Previous position > Current position
+ * zw: Current position  > Next position
+ **/
+
+#pragma BLENDER_REQUIRE(common_math_lib.glsl)
+#pragma BLENDER_REQUIRE(eevee_velocity_lib.glsl)
+#pragma BLENDER_REQUIRE(eevee_surface_velocity_lib.glsl)
+#pragma BLENDER_REQUIRE(eevee_shader_shared.hh)
+
+layout(std140) uniform camera_prev_block
+{
+  CameraData cam_prev;
+};
+
+layout(std140) uniform camera_curr_block
+{
+  CameraData cam_curr;
+};
+
+layout(std140) uniform camera_next_block
+{
+  CameraData cam_next;
+};
+
+layout(location = 0) out vec4 out_velocity_camera;
+layout(location = 1) out vec4 out_velocity_view;
+
+void main(void)
+{
+  compute_velocity(interp.P_prev,
+                   interp.P,
+                   interp.P_next,
+                   cam_prev,
+                   cam_curr,
+                   cam_next,
+                   out_velocity_camera,
+                   out_velocity_view);
+}