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61 lines
2.0 KiB
61 lines
2.0 KiB
11 years ago
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/*
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* Copyright © 2013 Intel Corporation
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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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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* 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 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 DEALINGS
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* IN THE SOFTWARE.
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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 "dispatch_common.h"
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/**
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* If we can determine the WGL extension support from the current
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* context, then return that, otherwise give the answer that will just
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* send us on to get_proc_address().
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*/
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bool
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epoxy_conservative_has_wgl_extension(const char *ext)
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{
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HDC hdc = wglGetCurrentDC();
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if (!hdc)
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return true;
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return epoxy_has_wgl_extension(hdc, ext);
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}
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PUBLIC bool
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epoxy_has_wgl_extension(HDC hdc, const char *ext)
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{
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PFNWGLGETEXTENSIONSSTRINGARBPROC getext;
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getext = (void *)wglGetProcAddress("wglGetExtensionsStringARB");
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if (!getext) {
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fprintf(stderr,
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"Implementation unexpectedly missing "
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"WGL_ARB_extensions_string. Probably a libepoxy bug.\n");
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return false;
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}
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return epoxy_extension_in_string(getext(hdc), ext);
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}
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