From 61d26bc82e7c4100acfb551cbb0ba9d84bbc4ba5 Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Mon, 8 Feb 2010 19:27:56 +0100 Subject: dri2: Event driven buffer validation. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When a buffer invalidation event is received from the X server, the "invalidate" hook of the DRI2 flush extension is executed: A generic implementation (dri2InvalidateDrawable) is provided that just bumps the "pStamp" sequence number in __DRIdrawableRec. For old servers not supporting buffer invalidation events, the invalidate hook will be called before flushing the fake front/back buffer (that's typically once per frame -- not a lot worse than the situation we were in before). No effort has been made on preserving backwards compatibility with version 2 of the flush extension, but I think it's acceptable because AFAIK no released stack is making use of it. Signed-off-by: Kristian Høgsberg --- include/GL/internal/dri_interface.h | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'include/GL') diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h index 58540d6005..cb99c270f5 100644 --- a/include/GL/internal/dri_interface.h +++ b/include/GL/internal/dri_interface.h @@ -269,22 +269,20 @@ struct __DRItexBufferExtensionRec { * Used by drivers that implement DRI2 */ #define __DRI2_FLUSH "DRI2_Flush" -#define __DRI2_FLUSH_VERSION 2 +#define __DRI2_FLUSH_VERSION 3 struct __DRI2flushExtensionRec { __DRIextension base; void (*flush)(__DRIdrawable *drawable); /** - * Flush all rendering queue in the driver to the drm and - * invalidate all buffers. The driver will call out to - * getBuffers/getBuffersWithFormat before it starts rendering - * again. + * Ask the driver to call getBuffers/getBuffersWithFormat before + * it starts rendering again. * - * \param drawable the drawable to flush and invalidate + * \param drawable the drawable to invalidate * - * \since 2 + * \since 3 */ - void (*flushInvalidate)(__DRIdrawable *drawable); + void (*invalidate)(__DRIdrawable *drawable); }; -- cgit v1.2.3