Hi Darrell,
This is the 2nd fairly recent issue I notice you tracked down to drivers
being very unhappy with specific modes set. I'm curious, how did you go
about figuring out which call was killing the driver? Is it
trial-and-error or you have a GL-driver-writer's mind and can make
educated guesses? :) Or...
-Nathan
>
> Author: dcommander <dcommander>
> Date: Tue Mar 22 21:17:32 2011 +0000
>
> diff --git a/rr/pbwin.cpp b/rr/pbwin.cpp
> index 63dad42..fc20d7a 100644
> --- a/rr/pbwin.cpp
> +++ b/rr/pbwin.cpp
> @@ -756,6 +756,16 @@ void pbwin::readpixels(GLint x, GLint y, GLint w, GLint
> pit
> else if(pitch%2==0) glPixelStorei(GL_PACK_ALIGNMENT, 2);
> else if(pitch%1==0) glPixelStorei(GL_PACK_ALIGNMENT, 1);
>
> + glPushAttrib(GL_PIXEL_MODE_BIT);
> + _glPixelTransferf(GL_RED_SCALE, 1.0);
> + _glPixelTransferf(GL_RED_BIAS, 0.0);
> + _glPixelTransferf(GL_GREEN_SCALE, 1.0);
> + _glPixelTransferf(GL_GREEN_BIAS, 0.0);
> + _glPixelTransferf(GL_BLUE_SCALE, 1.0);
> + _glPixelTransferf(GL_BLUE_BIAS, 0.0);
> + _glPixelTransferf(GL_ALPHA_SCALE, 1.0);
> + _glPixelTransferf(GL_ALPHA_BIAS, 0.0);
> +
> if(usepbo)
> {
> if(!ext)
> @@ -905,6 +915,7 @@ void pbwin::readpixels(GLint x, GLint y, GLint w, GLint
> pitc
> }
>
> glRenderMode(oldrendermode);
> + glPopAttrib();
> glPopClientAttrib();
> tc.restore();
>
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