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      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 <keithw (at) vmware.com>
     33  */
     34 
     35 #include <sched.h>
     36 #include <errno.h>
     37 
     38 #include "main/glheader.h"
     39 #include "main/imports.h"
     40 #include "main/macros.h"
     41 #include "main/context.h"
     42 #include "swrast/swrast.h"
     43 
     44 
     45 
     46 #include "radeon_common.h"
     47 #include "r200_context.h"
     48 #include "r200_ioctl.h"
     49 #include "radeon_reg.h"
     50 
     51 #define R200_TIMEOUT             512
     52 #define R200_IDLE_RETRY           16
     53 
     54 /* ================================================================
     55  * Buffer clear
     56  */
     57 static void r200Clear( struct gl_context *ctx, GLbitfield mask )
     58 {
     59    GLuint hwmask, swmask;
     60    GLuint hwbits = BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT |
     61                    BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL |
     62                    BUFFER_BIT_COLOR0;
     63 
     64    radeonFlush( ctx );
     65 
     66    hwmask = mask & hwbits;
     67    swmask = mask & ~hwbits;
     68 
     69    if ( swmask ) {
     70       if (R200_DEBUG & RADEON_FALLBACKS)
     71 	 fprintf(stderr, "%s: swrast clear, mask: %x\n", __func__, swmask);
     72       _swrast_Clear( ctx, swmask );
     73    }
     74 
     75    if ( !hwmask )
     76       return;
     77 
     78    radeonUserClear(ctx, hwmask);
     79 }
     80 
     81 
     82 void r200InitIoctlFuncs( struct dd_function_table *functions )
     83 {
     84     functions->Clear = r200Clear;
     85     functions->Finish = radeonFinish;
     86     functions->Flush = radeonFlush;
     87 }
     88 
     89