Fix over-allocation of alpha-channel buffer. (Reduces memory usage

mdboom · mdboom · commit cb627066b354 · 2007-09-05T14:03:09.000Z
with Agg by ~25%

svn path=/trunk/matplotlib/; revision=3784
diff --git a/src/_backend_agg.cpp b/src/_backend_agg.cpp
@@ -247,7 +247,7 @@ RendererAgg::RendererAgg(unsigned int width, unsigned int height, double dpi,
   renderingBuffer = new agg::rendering_buffer;
   renderingBuffer->attach(pixBuffer, width, height, stride);
   
-  alphaBuffer = new agg::int8u[NUMBYTES];
+  alphaBuffer = new agg::int8u[width*height];
   alphaMaskRenderingBuffer = new agg::rendering_buffer;
   alphaMaskRenderingBuffer->attach(alphaBuffer, width, height, stride);
   alphaMask = new alpha_mask_type(*alphaMaskRenderingBuffer);
