mirror of https://gitlab.freedesktop.org/mesa/mesa
148 lines
4.3 KiB
C
148 lines
4.3 KiB
C
/*
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* (C) Copyright 2016, NVIDIA CORPORATION.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Kyle Brenneman <kbrenneman@nvidia.com>
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*/
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#include "egldispatchstubs.h"
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#include "g_egldispatchstubs.h"
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#include <stdlib.h>
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#include <string.h>
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#include "eglcurrent.h"
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static const __EGLapiExports *exports;
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const int __EGL_DISPATCH_FUNC_COUNT = __EGL_DISPATCH_COUNT;
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int __EGL_DISPATCH_FUNC_INDICES[__EGL_DISPATCH_COUNT + 1];
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static int
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Compare(const void *l, const void *r)
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{
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const char *s = *(const char **)r;
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return strcmp(l, s);
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}
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static int
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FindProcIndex(const char *name)
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{
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const char **match =
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bsearch(name, __EGL_DISPATCH_FUNC_NAMES, __EGL_DISPATCH_COUNT,
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sizeof(const char *), Compare);
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if (match == NULL)
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return __EGL_DISPATCH_COUNT;
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return match - __EGL_DISPATCH_FUNC_NAMES;
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}
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void
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__eglInitDispatchStubs(const __EGLapiExports *exportsTable)
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{
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int i;
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exports = exportsTable;
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for (i = 0; i < __EGL_DISPATCH_FUNC_COUNT; i++) {
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__EGL_DISPATCH_FUNC_INDICES[i] = -1;
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}
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}
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void
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__eglSetDispatchIndex(const char *name, int dispatchIndex)
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{
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int index = FindProcIndex(name);
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__EGL_DISPATCH_FUNC_INDICES[index] = dispatchIndex;
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}
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void *
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__eglDispatchFindDispatchFunction(const char *name)
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{
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int index = FindProcIndex(name);
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return (void *)__EGL_DISPATCH_FUNCS[index];
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}
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static __eglMustCastToProperFunctionPointerType
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FetchVendorFunc(__EGLvendorInfo *vendor, int index, EGLint errorCode)
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{
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__eglMustCastToProperFunctionPointerType func = NULL;
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if (vendor != NULL) {
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func = exports->fetchDispatchEntry(vendor,
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__EGL_DISPATCH_FUNC_INDICES[index]);
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}
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if (func == NULL) {
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if (errorCode != EGL_SUCCESS) {
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// Since we have no vendor, the follow-up eglGetError() call will
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// end up using the GLVND error code. Set it here.
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if (vendor == NULL) {
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exports->setEGLError(errorCode);
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}
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_eglError(errorCode, __EGL_DISPATCH_FUNC_NAMES[index]);
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}
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return NULL;
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}
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if (!exports->setLastVendor(vendor)) {
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// Don't bother trying to set an error code in libglvnd. If
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// setLastVendor failed, then setEGLError would also fail.
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_eglError(errorCode, __EGL_DISPATCH_FUNC_NAMES[index]);
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return NULL;
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}
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return func;
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}
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__eglMustCastToProperFunctionPointerType
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__eglDispatchFetchByCurrent(int index)
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{
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__EGLvendorInfo *vendor;
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// Note: This is only used for the eglWait* functions. For those, if
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// there's no current context, then they're supposed to do nothing but
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// return success.
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exports->threadInit();
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vendor = exports->getCurrentVendor();
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return FetchVendorFunc(vendor, index, EGL_SUCCESS);
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}
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__eglMustCastToProperFunctionPointerType
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__eglDispatchFetchByDisplay(EGLDisplay dpy, int index)
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{
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__EGLvendorInfo *vendor;
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exports->threadInit();
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vendor = exports->getVendorFromDisplay(dpy);
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return FetchVendorFunc(vendor, index, EGL_BAD_DISPLAY);
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}
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__eglMustCastToProperFunctionPointerType
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__eglDispatchFetchByDevice(EGLDeviceEXT dev, int index)
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{
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__EGLvendorInfo *vendor;
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exports->threadInit();
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vendor = exports->getVendorFromDevice(dev);
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return FetchVendorFunc(vendor, index, EGL_BAD_DEVICE_EXT);
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}
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