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

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /*
  31  * Authors:
  32  *   Keith Whitwell <keith@tungstengraphics.com>
  33  */
  34
  35 #include "r200_context.h"
  36 #include "r200_lock.h"
  37 #include "r200_tex.h"
  38 #include "r200_state.h"
  39 #include "r200_ioctl.h"
  40
  41 #include "drirenderbuffer.h"
  42
  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 r200UpdatePageFlipping( r200ContextPtr rmesa )
  53 {
  54    rmesa->doPageFlip = rmesa->sarea->pfState;
  55    if (rmesa->glCtx->WinSysDrawBuffer) {
  56       driFlipRenderbuffers(rmesa->glCtx->WinSysDrawBuffer,
  57                            rmesa->sarea->pfCurrentPage);
  58    }
  59 }
  60
  61
  62
  63 /* Update the hardware state.  This is called if another context has
  64  * grabbed the hardware lock, which includes the X server.  This
  65  * function also updates the driver's window state after the X server
  66  * moves, resizes or restacks a window -- the change will be reflected
  67  * in the drawable position and clip rects.  Since the X server grabs
  68  * the hardware lock when it changes the window state, this routine will
  69  * automatically be called after such a change.
  70  */
  71 void r200GetLock( r200ContextPtr rmesa, GLuint flags )
  72 {
  73    __DRIdrawablePrivate *drawable = rmesa->dri.drawable;
  74    __DRIdrawablePrivate *readable = rmesa->dri.readable;
  75    __DRIscreenPrivate *sPriv = rmesa->dri.screen;
  76    drm_radeon_sarea_t *sarea = rmesa->sarea;
  77    int i;
  78
  79    drmGetLock( rmesa->dri.fd, rmesa->dri.hwContext, flags );
  80
  81    /* The window might have moved, so we might need to get new clip
  82     * rects.
  83     *
  84     * NOTE: This releases and regrabs the hw lock to allow the X server
  85     * to respond to the DRI protocol request for new drawable info.
  86     * Since the hardware state depends on having the latest drawable
  87     * clip rects, all state checking must be done _after_ this call.
  88     */
  89    DRI_VALIDATE_DRAWABLE_INFO( sPriv, drawable );
  90    if (drawable != readable) {
  91       DRI_VALIDATE_DRAWABLE_INFO( sPriv, readable );
  92    }
  93
  94    if ( rmesa->lastStamp != drawable->lastStamp ) {
  95       r200UpdatePageFlipping( rmesa );
  96       r200SetCliprects( rmesa );
  97       r200UpdateViewportOffset( rmesa->glCtx );
  98       driUpdateFramebufferSize(rmesa->glCtx, drawable);
  99    }
 100
 101    R200_STATECHANGE( rmesa, ctx );
 102    if (rmesa->sarea->tiling_enabled) {
 103       rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH] |= R200_COLOR_TILE_ENABLE;
 104    }
 105    else rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH] &= ~R200_COLOR_TILE_ENABLE;
 106
 107    if ( sarea->ctx_owner != rmesa->dri.hwContext ) {
 108       sarea->ctx_owner = rmesa->dri.hwContext;
 109    }
 110
 111    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 112       DRI_AGE_TEXTURES( rmesa->texture_heaps[ i ] );
 113    }
 114
 115    rmesa->lost_context = GL_TRUE;
 116 }