1 files changed, 11 insertions, 0 deletions
diff --git a/source/blender/compositor/realtime_compositor/shaders/compositor_alpha_crop.glsl b/source/blender/compositor/realtime_compositor/shaders/compositor_alpha_crop.glsl
new file mode 100644
index 00000000000..d55c8efd4c6
--- /dev/null
+++ b/source/blender/compositor/realtime_compositor/shaders/compositor_alpha_crop.glsl
@@ -0,0 +1,11 @@
+#pragma BLENDER_REQUIRE(gpu_shader_compositor_texture_utilities.glsl)
+
+void main()
+{
+  ivec2 texel = ivec2(gl_GlobalInvocationID.xy);
+  /* The lower bound is inclusive and upper bound is exclusive. */
+  bool is_inside = all(greaterThanEqual(texel, lower_bound)) && all(lessThan(texel, upper_bound));
+  /* Write the pixel color if it is inside the cropping region, otherwise, write zero. */
+  vec4 color = is_inside ? texture_load(input_tx, texel) : vec4(0.0);
+  imageStore(output_img, texel, color);
+}