mirror of https://gitlab.freedesktop.org/mesa/mesa
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/**************************************************************************
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*
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* Copyright 2008 VMware, Inc.
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* Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
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* Copyright 2010-2011 LunarG, Inc.
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the 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 NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS 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
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* DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* Functions for choosing and opening/loading device drivers.
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*/
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#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "c11/threads.h"
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#include "egldefines.h"
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#include "egldisplay.h"
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#include "egldriver.h"
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#include "egllog.h"
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#include "util/debug.h"
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extern const _EGLDriver _eglDriver;
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/**
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* Initialize the display using the driver's function.
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* If the initialisation fails, try again using only software rendering.
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*/
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bool
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_eglInitializeDisplay(_EGLDisplay *disp)
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{
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assert(!disp->Initialized);
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/* set options */
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disp->Options.ForceSoftware =
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env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false);
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if (disp->Options.ForceSoftware)
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_eglLog(_EGL_DEBUG, "Found 'LIBGL_ALWAYS_SOFTWARE' set, will use a CPU renderer");
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if (_eglDriver.Initialize(&_eglDriver, disp)) {
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disp->Driver = &_eglDriver;
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disp->Initialized = EGL_TRUE;
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return true;
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}
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if (disp->Options.ForceSoftware)
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return false;
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disp->Options.ForceSoftware = EGL_TRUE;
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if (!_eglDriver.Initialize(&_eglDriver, disp))
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return false;
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disp->Driver = &_eglDriver;
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disp->Initialized = EGL_TRUE;
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return true;
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}
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__eglMustCastToProperFunctionPointerType
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_eglGetDriverProc(const char *procname)
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{
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if (_eglDriver.GetProcAddress)
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return _eglDriver.GetProcAddress(&_eglDriver, procname);
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return NULL;
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}
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