1 files changed, 28 insertions, 0 deletions
diff --git a/source/blender/draw/modes/shaders/object_lightprobe_grid_vert.glsl b/source/blender/draw/modes/shaders/object_lightprobe_grid_vert.glsl
new file mode 100644
index 00000000000..b47b3ee1cf4
--- /dev/null
+++ b/source/blender/draw/modes/shaders/object_lightprobe_grid_vert.glsl
@@ -0,0 +1,28 @@
+
+in vec3 pos;
+in vec3 nor;
+
+uniform mat4 ViewProjectionMatrix;
+
+uniform float sphere_size;
+uniform ivec3 grid_resolution;
+uniform vec3 corner;
+uniform vec3 increment_x;
+uniform vec3 increment_y;
+uniform vec3 increment_z;
+
+void main()
+{
+	vec3 ls_cell_location;
+	/* Keep in sync with update_irradiance_probe */
+	ls_cell_location.z = float(gl_InstanceID % grid_resolution.z);
+	ls_cell_location.y = float((gl_InstanceID / grid_resolution.z) % grid_resolution.y);
+	ls_cell_location.x = float(gl_InstanceID / (grid_resolution.z * grid_resolution.y));
+
+	vec3 ws_cell_location = corner +
+	    (increment_x * ls_cell_location.x +
+	     increment_y * ls_cell_location.y +
+	     increment_z * ls_cell_location.z);
+
+	gl_Position = ViewProjectionMatrix * vec4(pos * 0.02 * sphere_size + ws_cell_location, 1.0);
+}
+\ No newline at end of file