Fix compositor using edge repeat policy when it shouldn't

Was easy to notice when alpha-overing smaller image with blur on
the bigger frame.

1 files changed, 6 insertions, 0 deletions

diff --git a/source/blender/compositor/intern/COM_MemoryBuffer.h b/source/blender/compositor/intern/COM_MemoryBuffer.h
index f9e2dd87d05..a8e34543e08 100644
--- a/source/blender/compositor/intern/COM_MemoryBuffer.h
+++ b/source/blender/compositor/intern/COM_MemoryBuffer.h
@@ -259,6 +259,12 @@ public:
 		float u = x;
 		float v = y;
 		this->wrap_pixel(u, v, extend_x, extend_y);
+		if ((extend_x != COM_MB_REPEAT && (u < 0.0f || u >= this->m_width)) ||
+		    (extend_y != COM_MB_REPEAT && (v < 0.0f || v >= this->m_height)))
+		{
+			zero_v4(result);
+			return;
+		}
 		BLI_bilinear_interpolation_wrap_fl(
 		        this->m_buffer, result, this->m_width, this->m_height, this->m_num_channels, u, v,
 		        extend_x == COM_MB_REPEAT, extend_y == COM_MB_REPEAT);