Nullpointer exception happened when all input sockets of a (for example)

a translate node were connected with the same complex node (like lens
distortion).

Added a check to see if the list of buffers are available to resolve
this issue.

1 files changed, 14 insertions, 7 deletions

diff --git a/source/blender/compositor/operations/COM_ReadBufferOperation.cpp b/source/blender/compositor/operations/COM_ReadBufferOperation.cpp
index d82294dd8a6..857131950dd 100644
--- a/source/blender/compositor/operations/COM_ReadBufferOperation.cpp
+++ b/source/blender/compositor/operations/COM_ReadBufferOperation.cpp
@@ -48,14 +48,21 @@ void ReadBufferOperation::determineResolution(unsigned int resolution[], unsigne
 }
 void ReadBufferOperation::executePixel(float *color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[])
 {
-	MemoryBuffer *inputBuffer = inputBuffers[this->offset];
-	if (inputBuffer) {
-		if (sampler == COM_PS_NEAREST) {
-			inputBuffer->read(color, x, y);
-		}
-		else {
-			inputBuffer->readCubic(color, x, y);
+	if (inputBuffers) {
+		MemoryBuffer *inputBuffer = inputBuffers[this->offset];
+		if (inputBuffer) {
+			if (sampler == COM_PS_NEAREST) {
+				inputBuffer->read(color, x, y);
+			}
+			else {
+				inputBuffer->readCubic(color, x, y);
+			}
 		}
+	} else {
+		color[0] = 0.0f;
+		color[1] = 0.0f;
+		color[2] = 0.0f;
+		color[3] = 0.0f;
 	}
 }