Enable GLX_SGI_make_current_read for tdfx.

Implement GLX_SGI_make_current_read for tdfx.  Remove annoying debug
printf in tdfxSwapBuffers.  Updated a comment in drirenderbuffer.h to
note that the tdfx driver uses a flag that was previously only used by
s3v.

This code was tested with glxgears, wincopy, and manywin.

1 files changed, 8 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/tdfx/tdfx_context.c b/src/mesa/drivers/dri/tdfx/tdfx_context.c
index e9c07bd862..bd9dade89b 100644
--- a/src/mesa/drivers/dri/tdfx/tdfx_context.c
+++ b/src/mesa/drivers/dri/tdfx/tdfx_context.c
@@ -657,8 +657,10 @@ tdfxMakeCurrent( __DRIcontextPrivate *driContextPriv,
       GLcontext *newCtx = newFx->glCtx;
       GET_CURRENT_CONTEXT(curCtx);
 
-      if ( newFx->driDrawable != driDrawPriv ) {
+      if ((newFx->driDrawable != driDrawPriv)
+	  || (newFx->driReadable != driReadPriv)) {
 	 newFx->driDrawable = driDrawPriv;
+	 newFx->driReadable = driReadPriv;
 	 newFx->dirty = ~0;
       }
       else {
@@ -676,6 +678,11 @@ tdfxMakeCurrent( __DRIcontextPrivate *driContextPriv,
 	 newFx->dirty = ~0;
       }
 
+      driUpdateFramebufferSize(newCtx, driDrawPriv);
+      if (driDrawPriv != driReadPriv) {
+	 driUpdateFramebufferSize(newCtx, driReadPriv);
+      }
+
       if ( !newFx->Glide.Initialized ) {
 	 if ( !tdfxInitContext( driDrawPriv, newFx ) )
 	    return GL_FALSE;
@@ -700,7 +707,6 @@ tdfxMakeCurrent( __DRIcontextPrivate *driContextPriv,
 	 UNLOCK_HARDWARE( newFx );
       }
 
-       driUpdateFramebufferSize(newCtx, driDrawPriv);
       _mesa_make_current( newCtx,
                           (GLframebuffer *) driDrawPriv->driverPrivate,
                           (GLframebuffer *) driReadPriv->driverPrivate );