How can we make the saveFrame() method in ExtractMpegFramesTest more efficient?

Question

[edit] Reformatting into question and answer format following fadden@ suggestion.

In ExtractMpegFramesTest_egl14.java.txt, method saveFrame(), there is a loop for re

Answer 1

[edit] Reformatting into question and answer format following fadden@ suggestion

I wanted to suggest that this conversion can happen in the FragmentShader by changing the line

gl_FragColor = texture2D(sTexture, vTextureCoord);

into

gl_FragColor = texture2D(sTexture, vTextureCoord).argb;

which is an efficient shortcut to reorder in GPU the shader's output channels, that works in other ways too: .abgr or even .bggr etc.