src/mesa/state_tracker/st_cb_flush.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28  /*
  29   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   *   Brian Paul
  32   */
  33
  34 #include "main/glheader.h"
  35 #include "main/macros.h"
  36 #include "main/context.h"
  37 #include "st_context.h"
  38 #include "st_cb_flush.h"
  39 #include "st_cb_fbo.h"
  40 #include "st_public.h"
  41 #include "pipe/p_context.h"
  42 #include "pipe/p_defines.h"
  43 #include "pipe/p_winsys.h"
  44
  45
  46 void st_flush( struct st_context *st, uint pipeFlushFlags )
  47 {
  48    GLframebuffer *fb = st->ctx->DrawBuffer;
  49
  50    FLUSH_VERTICES(st->ctx, 0);
  51
  52    /* If there has been no rendering to the frontbuffer, consider
  53     * short-circuiting this, or perhaps pass an "optional" flag down
  54     * to the driver so that it can make the decision.
  55     */
  56    st->pipe->flush( st->pipe, pipeFlushFlags );
  57
  58    if (!fb)
  59       return;
  60
  61    /* XXX: temporary hack.  This flag should only be set if we do any
  62     * rendering to the front buffer.
  63     */
  64    st->flags.frontbuffer_dirty
  65       = (fb->_ColorDrawBufferMask[0] & BUFFER_BIT_FRONT_LEFT);
  66
  67    if (st->flags.frontbuffer_dirty) {
  68       struct st_renderbuffer *strb
  69          = st_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
  70       struct pipe_surface *front_surf = strb->surface;
  71
  72       /* Hook for copying "fake" frontbuffer if necessary:
  73        */
  74       st->pipe->winsys->flush_frontbuffer( st->pipe->winsys, front_surf,
  75                                            st->pipe->priv );
  76       st->flags.frontbuffer_dirty = 0;
  77    }
  78 }
  79
  80
  81 /**
  82  * Called via ctx->Driver.Flush()
  83  */
  84 static void st_Flush(GLcontext *ctx)
  85 {
  86    st_flush(ctx->st, 0x0);
  87 }
  88
  89
  90 /**
  91  * Called via ctx->Driver.Finish()
  92  */
  93 static void st_Finish(GLcontext *ctx)
  94 {
  95    st_flush(ctx->st, PIPE_FLUSH_WAIT);
  96 }
  97
  98
  99 void st_init_flush_functions(struct dd_function_table *functions)
 100 {
 101    functions->Flush = st_Flush;
 102    functions->Finish = st_Finish;
 103 }