demetrioussharpe at netscape.net
Thu Jan 19 08:58:34 PST 2012
On 1/18/2012 11:19 AM, Brian Paul wrote:
> On 01/18/2012 09:01 AM, Dee Sharpe wrote:
>> While implementing Clear() for a platform, which buffers in GLContext
>> need to be cleared out of the list of:
>> Or do they all need to be cleared?
> Clearing effects "draw" buffers, not "read" buffers.
> Unless a user-created FBO is bound, ctx->WinSysDrawBuffer ==
> You need to clear the color buffers attached to ctx->DrawBuffer. The
> number of buffers to clear is ctx->DrawBuffer->_NumColorDrawBuffers
> and the indexes/pointers to the renderbuffers is in
> _ColorDrawBufferIndexes and _ColorDrawBuffers.
> I may actually get rid of the later (redundant) array and just write a
> helper function that returns a pointer to a renderbuffer given a
> buffer index.
Thanks for the quick reply. So, if I want to directly access the
renderbuffer that I designated as the front left buffer, then I need to
use _ColorDrawBuffers[BUFFER_FRONT_LEFT], correct?
The difference between what IS done
& what COULD be done is relational to
what you ARE doing& what you COULD be doing!
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