src/mesa/drivers/dri/r200/r200_lock.c

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/r200/r200_lock.c,v 1.1 2002/10/30 12:51:52 alanh Exp $ */
   2 /*
   3 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   4
   5 The Weather Channel (TM) funded Tungsten Graphics to develop the
   6 initial release of the Radeon 8500 driver under the XFree86 license.
   7 This notice must be preserved.
   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  *   Keith Whitwell <keith@tungstengraphics.com>
  34  */
  35 #include <string.h>
  36
  37 #include "r200_context.h"
  38 #include "r200_lock.h"
  39 #include "r200_tex.h"
  40 #include "r200_state.h"
  41 #include "r200_ioctl.h"
  42
  43 #if DEBUG_LOCKING
  44 char *prevLockFile = NULL;
  45 int prevLockLine = 0;
  46 #endif
  47
  48 /* Turn on/off page flipping according to the flags in the sarea:
  49  */
  50 static void
  51 r200UpdatePageFlipping( r200ContextPtr rmesa )
  52 {
  53    int use_back;
  54    rmesa->doPageFlip = rmesa->sarea->pfState;
  55
  56    use_back = (rmesa->glCtx->DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_BACK_LEFT);
  57    use_back ^= (rmesa->sarea->pfCurrentPage == 1);
  58
  59    if (use_back) {
  60          rmesa->state.color.drawOffset = rmesa->r200Screen->backOffset;
  61          rmesa->state.color.drawPitch  = rmesa->r200Screen->backPitch;
  62    } else {
  63          rmesa->state.color.drawOffset = rmesa->r200Screen->frontOffset;
  64          rmesa->state.color.drawPitch  = rmesa->r200Screen->frontPitch;
  65    }
  66
  67    R200_STATECHANGE( rmesa, ctx );
  68    rmesa->hw.ctx.cmd[CTX_RB3D_COLOROFFSET] = rmesa->state.color.drawOffset
  69                                            + rmesa->r200Screen->fbLocation;
  70    rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH]  = rmesa->state.color.drawPitch;
  71 }
  72
  73
  74
  75 /* Update the hardware state.  This is called if another context has
  76  * grabbed the hardware lock, which includes the X server.  This
  77  * function also updates the driver's window state after the X server
  78  * moves, resizes or restacks a window -- the change will be reflected
  79  * in the drawable position and clip rects.  Since the X server grabs
  80  * the hardware lock when it changes the window state, this routine will
  81  * automatically be called after such a change.
  82  */
  83 void r200GetLock( r200ContextPtr rmesa, GLuint flags )
  84 {
  85    __DRIdrawablePrivate *dPriv = rmesa->dri.drawable;
  86    __DRIscreenPrivate *sPriv = rmesa->dri.screen;
  87    drm_radeon_sarea_t *sarea = rmesa->sarea;
  88    int i;
  89
  90    drmGetLock( rmesa->dri.fd, rmesa->dri.hwContext, flags );
  91
  92    /* The window might have moved, so we might need to get new clip
  93     * rects.
  94     *
  95     * NOTE: This releases and regrabs the hw lock to allow the X server
  96     * to respond to the DRI protocol request for new drawable info.
  97     * Since the hardware state depends on having the latest drawable
  98     * clip rects, all state checking must be done _after_ this call.
  99     */
 100    DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
 101
 102    if ( rmesa->lastStamp != dPriv->lastStamp ) {
 103       r200UpdatePageFlipping( rmesa );
 104       if (rmesa->glCtx->DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_BACK_LEFT)
 105          r200SetCliprects( rmesa, GL_BACK_LEFT );
 106       else
 107          r200SetCliprects( rmesa, GL_FRONT_LEFT );
 108       r200UpdateViewportOffset( rmesa->glCtx );
 109       rmesa->lastStamp = dPriv->lastStamp;
 110    }
 111
 112    R200_STATECHANGE( rmesa, ctx );
 113    if (rmesa->sarea->tiling_enabled) {
 114       rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH] |= R200_COLOR_TILE_ENABLE;
 115    }
 116    else rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH] &= ~R200_COLOR_TILE_ENABLE;
 117
 118    if ( sarea->ctx_owner != rmesa->dri.hwContext ) {
 119       sarea->ctx_owner = rmesa->dri.hwContext;
 120    }
 121
 122    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 123       DRI_AGE_TEXTURES( rmesa->texture_heaps[ i ] );
 124    }
 125
 126    rmesa->lost_context = GL_TRUE;
 127 }