Enable GLX_SGI_make_current_read for radeon.

Added code to track the drawable bound to the context for reading.  In
addition, when a drawable is initially bound (for reading or drawing)
or when the size of the drawable changes, update the size of the
framebuffer object that back the drawable (for software fallbacks).

Deprecate the old GetBufferSize interface.

Bump the driver date.

These changes were tested with wincopy on both direct rendering and
accelerated indirect rendering (AIGLX).

1 files changed, 26 insertions, 9 deletions

diff --git a/src/mesa/drivers/dri/radeon/radeon_state.c b/src/mesa/drivers/dri/radeon/radeon_state.c
index 449c63eb7a..86d8c4d963 100644
--- a/src/mesa/drivers/dri/radeon/radeon_state.c
+++ b/src/mesa/drivers/dri/radeon/radeon_state.c
@@ -1635,25 +1635,42 @@ static void radeonLogicOpCode( GLcontext *ctx, GLenum opcode )
  */
 void radeonSetCliprects( radeonContextPtr rmesa )
 {
-   __DRIdrawablePrivate *dPriv = rmesa->dri.drawable;
+   __DRIdrawablePrivate *const drawable = rmesa->dri.drawable;
+   __DRIdrawablePrivate *const readable = rmesa->dri.readable;
+   GLframebuffer *const draw_fb = (GLframebuffer*) drawable->driverPrivate;
+   GLframebuffer *const read_fb = (GLframebuffer*) readable->driverPrivate;
 
-   if (rmesa->glCtx->DrawBuffer->_ColorDrawBufferMask[0]
+   if (draw_fb->_ColorDrawBufferMask[0]
        == BUFFER_BIT_BACK_LEFT) {
       /* Can't ignore 2d windows if we are page flipping.
        */
-      if ( dPriv->numBackClipRects == 0 || rmesa->doPageFlip ) {
-	 rmesa->numClipRects = dPriv->numClipRects;
-	 rmesa->pClipRects = dPriv->pClipRects;
+      if ( drawable->numBackClipRects == 0 || rmesa->doPageFlip ) {
+	 rmesa->numClipRects = drawable->numClipRects;
+	 rmesa->pClipRects = drawable->pClipRects;
       }
       else {
-	 rmesa->numClipRects = dPriv->numBackClipRects;
-	 rmesa->pClipRects = dPriv->pBackClipRects;
+	 rmesa->numClipRects = drawable->numBackClipRects;
+	 rmesa->pClipRects = drawable->pBackClipRects;
       }
    }
    else {
       /* front buffer (or none, or multiple buffers */
-      rmesa->numClipRects = dPriv->numClipRects;
-      rmesa->pClipRects = dPriv->pClipRects;
+      rmesa->numClipRects = drawable->numClipRects;
+      rmesa->pClipRects = drawable->pClipRects;
+   }
+
+   if ((draw_fb->Width != drawable->w) || (draw_fb->Height != drawable->h)) {
+      _mesa_resize_framebuffer(&rmesa->glCtx, draw_fb,
+			       drawable->w, drawable->h);
+      draw_fb->Initialized = GL_TRUE;
+   }
+
+   if (drawable != readable) {
+      if ((read_fb->Width != readable->w) || (read_fb->Height != readable->h)) {
+	 _mesa_resize_framebuffer(&rmesa->glCtx, read_fb,
+				  readable->w, readable->h);
+	 read_fb->Initialized = GL_TRUE;
+      }
    }
 
    if (rmesa->state.scissor.enabled)