src/mesa/drivers/dri/radeon/radeon_lock.c

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/radeon/radeon_lock.c,v 1.5 2002/10/30 12:51:55 alanh Exp $ */
   2 /**************************************************************************
   3
   4 Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
   5                      VA Linux Systems Inc., Fremont, California.
   6
   7 All Rights Reserved.
   8
   9 Permission is hereby granted, free of charge, to any person obtaining
  10 a copy of this software and associated documentation files (the
  11 "Software"), to deal in the Software without restriction, including
  12 without limitation the rights to use, copy, modify, merge, publish,
  13 distribute, sublicense, and/or sell copies of the Software, and to
  14 permit persons to whom the Software is furnished to do so, subject to
  15 the following conditions:
  16
  17 The above copyright notice and this permission notice (including the
  18 next paragraph) shall be included in all copies or substantial
  19 portions of the Software.
  20
  21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  24 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  25 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28
  29 **************************************************************************/
  30
  31 /*
  32  * Authors:
  33  *   Kevin E. Martin <martin@valinux.com>
  34  *   Gareth Hughes <gareth@valinux.com>
  35  */
  36
  37 #include "glheader.h"
  38 #include "radeon_context.h"
  39 #include "radeon_lock.h"
  40 #include "radeon_tex.h"
  41 #include "radeon_state.h"
  42 #include "radeon_ioctl.h"
  43
  44 #if DEBUG_LOCKING
  45 char *prevLockFile = NULL;
  46 int prevLockLine = 0;
  47 #endif
  48
  49 /* Turn on/off page flipping according to the flags in the sarea:
  50  */
  51 static void
  52 radeonUpdatePageFlipping( radeonContextPtr rmesa )
  53 {
  54    int use_back;
  55
  56
  57    rmesa->doPageFlip = rmesa->sarea->pfAllowPageFlip;
  58
  59    use_back = (rmesa->glCtx->Color._DrawDestMask == BACK_LEFT_BIT);
  60    use_back ^= (rmesa->sarea->pfCurrentPage == 1);
  61
  62    if ( RADEON_DEBUG & DEBUG_VERBOSE )
  63       fprintf(stderr, "%s allow %d current %d\n", __FUNCTION__,
  64               rmesa->doPageFlip,
  65               rmesa->sarea->pfCurrentPage );
  66
  67    if ( use_back ) {
  68          rmesa->state.color.drawOffset = rmesa->radeonScreen->backOffset;
  69          rmesa->state.color.drawPitch  = rmesa->radeonScreen->backPitch;
  70    } else {
  71          rmesa->state.color.drawOffset = rmesa->radeonScreen->frontOffset;
  72          rmesa->state.color.drawPitch  = rmesa->radeonScreen->frontPitch;
  73    }
  74
  75    RADEON_STATECHANGE( rmesa, ctx );
  76    rmesa->hw.ctx.cmd[CTX_RB3D_COLOROFFSET] = rmesa->state.color.drawOffset;
  77    rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH]  = rmesa->state.color.drawPitch;
  78 }
  79
  80
  81
  82 /* Update the hardware state.  This is called if another context has
  83  * grabbed the hardware lock, which includes the X server.  This
  84  * function also updates the driver's window state after the X server
  85  * moves, resizes or restacks a window -- the change will be reflected
  86  * in the drawable position and clip rects.  Since the X server grabs
  87  * the hardware lock when it changes the window state, this routine will
  88  * automatically be called after such a change.
  89  */
  90 void radeonGetLock( radeonContextPtr rmesa, GLuint flags )
  91 {
  92    __DRIdrawablePrivate *dPriv = rmesa->dri.drawable;
  93    __DRIscreenPrivate *sPriv = rmesa->dri.screen;
  94    RADEONSAREAPrivPtr sarea = rmesa->sarea;
  95
  96    drmGetLock( rmesa->dri.fd, rmesa->dri.hwContext, flags );
  97
  98    /* The window might have moved, so we might need to get new clip
  99     * rects.
 100     *
 101     * NOTE: This releases and regrabs the hw lock to allow the X server
 102     * to respond to the DRI protocol request for new drawable info.
 103     * Since the hardware state depends on having the latest drawable
 104     * clip rects, all state checking must be done _after_ this call.
 105     */
 106    DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
 107
 108    if ( rmesa->lastStamp != dPriv->lastStamp ) {
 109       radeonUpdatePageFlipping( rmesa );
 110       if (rmesa->glCtx->Color._DrawDestMask == BACK_LEFT_BIT)
 111          radeonSetCliprects( rmesa, GL_BACK_LEFT );
 112       else
 113          radeonSetCliprects( rmesa, GL_FRONT_LEFT );
 114       radeonUpdateViewportOffset( rmesa->glCtx );
 115       rmesa->lastStamp = dPriv->lastStamp;
 116    }
 117
 118    if ( sarea->ctxOwner != rmesa->dri.hwContext ) {
 119       int i;
 120       sarea->ctxOwner = rmesa->dri.hwContext;
 121
 122       for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 123          DRI_AGE_TEXTURES( rmesa->texture_heaps[ i ] );
 124       }
 125    }
 126 }