From a25caad9e4ed848e8b1169376901d6b9889faa80 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Fri, 27 Sep 2013 10:13:55 -0700 Subject: [PATCH] i965: Update the comment about viewport hacks. It wasn't clear that this was necessary for EGL, or why. Signed-off-by: Kenneth Graunke Reviewed-by: Ian Romanick --- src/mesa/drivers/dri/i965/intel_context.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/intel_context.c b/src/mesa/drivers/dri/i965/intel_context.c index 5a73e28..850b18c 100644 --- a/src/mesa/drivers/dri/i965/intel_context.c +++ b/src/mesa/drivers/dri/i965/intel_context.c @@ -373,7 +373,13 @@ intelInitContext(struct brw_context *brw, int bo_reuse_mode; struct gl_config visual; - /* Can't rely on invalidate events, fall back to glViewport hack */ + /* GLX uses DRI2 invalidate events to handle window resizing. + * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib), + * which doesn't provide a mechanism for snooping the event queues. + * + * So EGL still relies on viewport hacks to handle window resizing. + * This should go away with DRI3000. + */ if (!driContextPriv->driScreenPriv->dri2.useInvalidate) { brw->saved_viewport = functions->Viewport; functions->Viewport = intel_viewport; -- 2.7.4