xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
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swap_interval.c (2831B)

      1 /*
      2  * (C) Copyright IBM Corporation 2006
      3  * All Rights Reserved.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining a
      6  * copy of this software and associated documentation files (the "Software"),
      7  * to deal in the Software without restriction, including without limitation
      8  * on the rights to use, copy, modify, merge, publish, distribute, sub
      9  * license, and/or sell copies of the Software, and to permit persons to whom
     10  * the Software is furnished to do so, subject to the following conditions:
     11  *
     12  * The above copyright notice and this permission notice (including the next
     13  * paragraph) shall be included in all copies or substantial portions of the
     14  * Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
     20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 #ifdef HAVE_DIX_CONFIG_H
     26 #include <dix-config.h>
     27 #endif
     28 
     29 #include "glxserver.h"
     30 #include "glxutil.h"
     31 #include "glxext.h"
     32 #include "singlesize.h"
     33 #include "unpack.h"
     34 #include "indirect_size_get.h"
     35 #include "indirect_dispatch.h"
     36 #include "glxbyteorder.h"
     37 
     38 static int DoSwapInterval(__GLXclientState * cl, GLbyte * pc, int do_swap);
     39 
     40 int
     41 DoSwapInterval(__GLXclientState * cl, GLbyte * pc, int do_swap)
     42 {
     43     xGLXVendorPrivateReq *const req = (xGLXVendorPrivateReq *) pc;
     44     ClientPtr client = cl->client;
     45     const GLXContextTag tag = req->contextTag;
     46     __GLXcontext *cx;
     47     GLint interval;
     48 
     49     REQUEST_FIXED_SIZE(xGLXVendorPrivateReq, 4);
     50 
     51     cx = __glXLookupContextByTag(cl, tag);
     52 
     53     if ((cx == NULL) || (cx->pGlxScreen == NULL)) {
     54         client->errorValue = tag;
     55         return __glXError(GLXBadContext);
     56     }
     57 
     58     if (cx->pGlxScreen->swapInterval == NULL) {
     59         LogMessage(X_ERROR, "AIGLX: cx->pGlxScreen->swapInterval == NULL\n");
     60         client->errorValue = tag;
     61         return __glXError(GLXUnsupportedPrivateRequest);
     62     }
     63 
     64     if (cx->drawPriv == NULL) {
     65         client->errorValue = tag;
     66         return BadValue;
     67     }
     68 
     69     pc += __GLX_VENDPRIV_HDR_SIZE;
     70     interval = (do_swap)
     71         ? bswap_32(*(int *) (pc + 0))
     72         : *(int *) (pc + 0);
     73 
     74     if (interval <= 0)
     75         return BadValue;
     76 
     77     (void) (*cx->pGlxScreen->swapInterval) (cx->drawPriv, interval);
     78     return Success;
     79 }
     80 
     81 int
     82 __glXDisp_SwapIntervalSGI(__GLXclientState * cl, GLbyte * pc)
     83 {
     84     return DoSwapInterval(cl, pc, 0);
     85 }
     86 
     87 int
     88 __glXDispSwap_SwapIntervalSGI(__GLXclientState * cl, GLbyte * pc)
     89 {
     90     return DoSwapInterval(cl, pc, 1);
     91 }