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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Brian Paul
*/
#include "main/glheader.h"
#include "main/macros.h"
#include "main/context.h"
#include "st_context.h"
#include "st_cb_flush.h"
#include "st_cb_fbo.h"
#include "st_public.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_winsys.h"
void st_flush( struct st_context *st, uint pipeFlushFlags )
{
FLUSH_VERTICES(st->ctx, 0);
st->pipe->flush( st->pipe, pipeFlushFlags );
}
static void st_gl_flush( struct st_context *st, uint pipeFlushFlags )
{
GLframebuffer *fb = st->ctx->DrawBuffer;
FLUSH_VERTICES(st->ctx, 0);
if (!fb)
return;
/* XXX: temporary hack. This flag should only be set if we do any
* rendering to the front buffer.
*
* Further more, the scissor rectangle could be tracked to
* construct a dirty region of the front buffer, to avoid
* situations where it must be copied repeatedly.
*
* In the extreme case, some kind of timer could be set up to allow
* coalescing of multiple flushes to the frontbuffer, which can be
* quite a performance drain if there are a sufficient number of
* them.
*/
st->flags.frontbuffer_dirty
= (fb->_ColorDrawBufferMask[0] & BUFFER_BIT_FRONT_LEFT);
if (st->flags.frontbuffer_dirty) {
struct st_renderbuffer *strb
= st_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
struct pipe_surface *front_surf = strb->surface;
/* If we aren't rendering to the frontbuffer, this is a noop.
* This should be uncontroversial for glFlush, though people may
* feel more strongly about glFinish.
*
* Additionally, need to make sure that the frontbuffer_dirty
* flag really gets set on frontbuffer rendering.
*/
st->pipe->flush( st->pipe, pipeFlushFlags );
/* Hook for copying "fake" frontbuffer if necessary:
*/
st->pipe->winsys->flush_frontbuffer( st->pipe->winsys, front_surf,
st->pipe->priv );
st->flags.frontbuffer_dirty = 0;
}
}
/**
* Called via ctx->Driver.Flush()
*/
static void st_glFlush(GLcontext *ctx)
{
st_gl_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE);
}
/**
* Called via ctx->Driver.Finish()
*/
static void st_glFinish(GLcontext *ctx)
{
st_gl_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_WAIT);
}
void st_init_flush_functions(struct dd_function_table *functions)
{
functions->Flush = st_glFlush;
functions->Finish = st_glFinish;
}
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