src/mesa/drivers/dri/r300/radeon_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 #include <string.h>
  35
  36 #include "r200_context.h"
  37 #include "radeon_lock.h"
  38 #include "r200_tex.h"
  39 #include "r200_state.h"
  40 #include "radeon_ioctl.h"
  41 #include "radeon_state.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 radeonUpdatePageFlipping(radeonContextPtr radeon)
  51 {
  52         int use_back;
  53
  54         radeon->doPageFlip = radeon->sarea->pfState;
  55
  56         use_back = (radeon->glCtx->Color._DrawDestMask[0] == DD_BACK_LEFT_BIT);
  57         use_back ^= (radeon->sarea->pfCurrentPage == 1);
  58
  59         if (use_back) {
  60                 radeon->state.color.drawOffset = radeon->radeonScreen->backOffset;
  61                 radeon->state.color.drawPitch = radeon->radeonScreen->backPitch;
  62         } else {
  63                 radeon->state.color.drawOffset = radeon->radeonScreen->frontOffset;
  64                 radeon->state.color.drawPitch = radeon->radeonScreen->frontPitch;
  65         }
  66 }
  67
  68 /**
  69  * Called by radeonGetLock() after the lock has been obtained.
  70  */
  71 static void r200RegainedLock(r200ContextPtr r200)
  72 {
  73         __DRIdrawablePrivate *dPriv = r200->radeon.dri.drawable;
  74         int i;
  75
  76         if (r200->radeon.lastStamp != dPriv->lastStamp) {
  77                 radeonUpdatePageFlipping(&r200->radeon);
  78                 R200_STATECHANGE(r200, ctx);
  79                 r200->hw.ctx.cmd[CTX_RB3D_COLOROFFSET] =
  80                         r200->radeon.state.color.drawOffset
  81                         + r200->radeon.radeonScreen->fbLocation;
  82                 r200->hw.ctx.cmd[CTX_RB3D_COLORPITCH] =
  83                         r200->radeon.state.color.drawPitch;
  84
  85                 if (r200->radeon.glCtx->Color._DrawDestMask[0] == DD_BACK_LEFT_BIT)
  86                         radeonSetCliprects(&r200->radeon, GL_BACK_LEFT);
  87                 else
  88                         radeonSetCliprects(&r200->radeon, GL_FRONT_LEFT);
  89                 r200UpdateViewportOffset(r200->radeon.glCtx);
  90                 r200->radeon.lastStamp = dPriv->lastStamp;
  91         }
  92
  93         for (i = 0; i < r200->nr_heaps; i++) {
  94                 DRI_AGE_TEXTURES(r200->texture_heaps[i]);
  95         }
  96 }
  97
  98 static void r300RegainedLock(radeonContextPtr radeon)
  99 {
 100         __DRIdrawablePrivate *dPriv = radeon->dri.drawable;
 101
 102         if (radeon->lastStamp != dPriv->lastStamp) {
 103                 radeonUpdatePageFlipping(radeon);
 104
 105                 if (radeon->glCtx->Color._DrawDestMask[0] == DD_BACK_LEFT_BIT)
 106                         radeonSetCliprects(radeon, GL_BACK_LEFT);
 107                 else
 108                         radeonSetCliprects(radeon, GL_FRONT_LEFT);
 109
 110                 radeonUpdateScissor(radeon->glCtx);
 111                 radeon->lastStamp = dPriv->lastStamp;
 112         }
 113
 114 #if 0
 115         for (i = 0; i < r200->nr_heaps; i++) {
 116                 DRI_AGE_TEXTURES(r200->texture_heaps[i]);
 117         }
 118 #endif
 119 }
 120
 121 /* Update the hardware state.  This is called if another context has
 122  * grabbed the hardware lock, which includes the X server.  This
 123  * function also updates the driver's window state after the X server
 124  * moves, resizes or restacks a window -- the change will be reflected
 125  * in the drawable position and clip rects.  Since the X server grabs
 126  * the hardware lock when it changes the window state, this routine will
 127  * automatically be called after such a change.
 128  */
 129 void radeonGetLock(radeonContextPtr radeon, GLuint flags)
 130 {
 131         __DRIdrawablePrivate *dPriv = radeon->dri.drawable;
 132         __DRIscreenPrivate *sPriv = radeon->dri.screen;
 133         drm_radeon_sarea_t *sarea = radeon->sarea;
 134
 135         drmGetLock(radeon->dri.fd, radeon->dri.hwContext, flags);
 136
 137         /* The window might have moved, so we might need to get new clip
 138          * rects.
 139          *
 140          * NOTE: This releases and regrabs the hw lock to allow the X server
 141          * to respond to the DRI protocol request for new drawable info.
 142          * Since the hardware state depends on having the latest drawable
 143          * clip rects, all state checking must be done _after_ this call.
 144          */
 145         DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 146
 147         if (sarea->ctx_owner != radeon->dri.hwContext)
 148                 sarea->ctx_owner = radeon->dri.hwContext;
 149
 150         if (IS_FAMILY_R300(radeon))
 151                 r300RegainedLock(radeon);
 152         else
 153                 r200RegainedLock((r200ContextPtr)radeon);
 154
 155         radeon->lost_context = GL_TRUE;
 156 }