D627: Memory usage optimization for the compositor.

The compostor used a fixed size of 4 floats to hold pixel data. this
patch will select size of a pixel based on its type.
It uses 1 float for Value, 3 float for vector and 4 floats for color
data types.

When benchmarking on shots (opening shot of caminandes) we get a
reduction of memory of 30% and a tiny speedup as less data
transformations needs to take place (but these are negligable.

More information of the patch can be found on
https://developer.blender.org/D627 and
http://wiki.blender.org/index.php/Dev:Ref/Proposals/Compositor2014_p1.1_TD

Developers: jbakker & mdewanchand
Thanks for Sergey for his indept review.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/compositor/operations/COM_GlareBaseOperation.cpp b/source/blender/compositor/operations/COM_GlareBaseOperation.cpp
index 99c745d7fb0..98919f1b161 100644
--- a/source/blender/compositor/operations/COM_GlareBaseOperation.cpp
+++ b/source/blender/compositor/operations/COM_GlareBaseOperation.cpp
@@ -49,7 +49,7 @@ MemoryBuffer *GlareBaseOperation::createMemoryBuffer(rcti *rect2)
 	rect.ymin = 0;
 	rect.xmax = getWidth();
 	rect.ymax = getHeight();
-	MemoryBuffer *result = new MemoryBuffer(NULL, &rect);
+	MemoryBuffer *result = new MemoryBuffer(COM_DT_COLOR, &rect);
 	float *data = result->getBuffer();
 	this->generateGlare(data, tile, this->m_settings);
 	return result;