src/mesa/drivers/dri/mach64/mach64_lock.c

   1 /* -*- mode: c; c-basic-offset: 3 -*- */
   2 /*
   3  * Copyright 2000 Gareth Hughes
   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 "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * Authors:
  27  *      Gareth Hughes <gareth@valinux.com>
  28  *      Leif Delgass <ldelgass@retinalburn.net>
  29  *      José Fonseca <j_r_fonseca@yahoo.co.uk>
  30  */
  31
  32 #include "mach64_context.h"
  33 #include "mach64_state.h"
  34 #include "mach64_lock.h"
  35 #include "drirenderbuffer.h"
  36
  37 #if DEBUG_LOCKING
  38 char *prevLockFile = NULL;
  39 int   prevLockLine = 0;
  40 #endif
  41
  42
  43 /* Update the hardware state.  This is called if another context has
  44  * grabbed the hardware lock, which includes the X server.  This
  45  * function also updates the driver's window state after the X server
  46  * moves, resizes or restacks a window -- the change will be reflected
  47  * in the drawable position and clip rects.  Since the X server grabs
  48  * the hardware lock when it changes the window state, this routine will
  49  * automatically be called after such a change.
  50  */
  51 void mach64GetLock( mach64ContextPtr mmesa, GLuint flags )
  52 {
  53    __DRIdrawable *dPriv = mmesa->driDrawable;
  54    __DRIscreen *sPriv = mmesa->driScreen;
  55    drm_mach64_sarea_t *sarea = mmesa->sarea;
  56    int i;
  57
  58    drmGetLock( mmesa->driFd, mmesa->hHWContext, flags );
  59
  60    /* The window might have moved, so we might need to get new clip
  61     * rects.
  62     *
  63     * NOTE: This releases and regrabs the hw lock to allow the X server
  64     * to respond to the DRI protocol request for new drawable info.
  65     * Since the hardware state depends on having the latest drawable
  66     * clip rects, all state checking must be done _after_ this call.
  67     */
  68    DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
  69
  70    if ( mmesa->lastStamp != dPriv->lastStamp ) {
  71       mmesa->lastStamp = dPriv->lastStamp;
  72       if (mmesa->glCtx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_BACK_LEFT)
  73          mach64SetCliprects( mmesa->glCtx, GL_BACK_LEFT );
  74       else
  75          mach64SetCliprects( mmesa->glCtx, GL_FRONT_LEFT );
  76       driUpdateFramebufferSize( mmesa->glCtx, dPriv );
  77       mach64CalcViewport( mmesa->glCtx );
  78    }
  79
  80    mmesa->dirty |= (MACH64_UPLOAD_CONTEXT
  81                     | MACH64_UPLOAD_MISC
  82                     | MACH64_UPLOAD_CLIPRECTS);
  83
  84    /* EXA render acceleration uses the texture engine, so restore it */
  85    mmesa->dirty |= (MACH64_UPLOAD_TEXTURE);
  86
  87    if ( sarea->ctx_owner != mmesa->hHWContext ) {
  88       sarea->ctx_owner = mmesa->hHWContext;
  89       mmesa->dirty = MACH64_UPLOAD_ALL;
  90    }
  91
  92    for ( i = mmesa->firstTexHeap ; i < mmesa->lastTexHeap ; i++ ) {
  93       DRI_AGE_TEXTURES( mmesa->texture_heaps[i] );
  94    }
  95 }