glFramebufferBlit or equivalent in SGX Graphics SDK for OMAP/Sitara (dirty region redraw implementation)

GregoireGentil

Hello,

We would like to use glFramebufferBlit or something equivalent on the SGX drivers either on OpenGLES 1.1 or 2.0. The idea is to be able to draw only a part of a scene to implement a kind of clipped redraw for dirty region. Another option would be to have "EGL_NOK_swap_region extension". Another one would be to get ANGLE_framebuffer_blit.

Any idea what I could use for such purpose?

Thanks in advance,

Grégoire Gentil

over 14 years ago

0 Prabindh Sundareson over 14 years ago

TI__Expert 6580 points

Gregoire,

Did you try the Blitwsegl, or the LinuxFBWSegl options ?

Beyond this - If there is additional functionality you want to implement (reimplement), you can use the pvr2d.h and wsegl.h files to implement your own window system hooks. You can take a look at Qt's implementation below to start with - note that this does not work well with a compositor - use it only for reference.

http://qt.gitorious.org/qt/qt/blobs/a62506aae40ede3fd8030312321759f669458909/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwswsegl.c

Latest download of the Graphics SDK at,

http://processors.wiki.ti.com/index.php/AM35x-OMAP35x_Graphics_SDK_Getting_Started_Guide

(Refer http://processors.wiki.ti.com/index.php/SGXDbg for changing the Window System options via powervr.ini)

Processors

Processors forum

glFramebufferBlit or equivalent in SGX Graphics SDK for OMAP/Sitara (dirty region redraw implementation)