mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-25 07:04:45 +00:00
90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// 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 shall be included in
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// all copies or substantial portions 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 THE
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// 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 "core/strings/stringFunctions.h"
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#include "platform/platformDlibrary.h"
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#include "console/console.h"
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namespace GL
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{
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//-----------------------------------------------------------------------------
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// Current active extensions
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struct GLExtensionPtrs;
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GLExtensionPtrs* _GGLptr;
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struct GLExtensionFlags;
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GLExtensionFlags* _GGLflag;
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//-----------------------------------------------------------------------------
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static inline int versionCombine( int major, int minor )
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{
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return major * 100 + minor;
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}
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bool bindFunction( DLibrary *dll, void *&fnAddress, const char *name )
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{
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fnAddress = dll->bind( name );
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if (!fnAddress)
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Con::warnf( "GLExtensions: DLL bind failed for %s", name );
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return fnAddress != 0;
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}
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bool hasExtension( const char *name, const char *extensions )
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{
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// Extensions are compared against the extension strings
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if (extensions && *extensions) {
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const char* ptr = dStrstr(extensions,name);
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if (ptr) {
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char end = ptr[dStrlen(name)];
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if (end == ' ' || end == 0)
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return true;
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}
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}
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return false;
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}
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bool hasVersion( const char *name, const char* prefix, int major, int minor )
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{
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// Extension group names are compared against the version number. The prefix
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// string should be "GL_VERSION" or "GLX_VERSION".. group names are
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// "GL_VERSION_1_1", "GL_VERSION_1_2", "GLX_VERSION_1_2", etc.
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while (*name && *prefix && *name == *prefix)
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name++, prefix++;
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if (*name == '_' && *prefix == '\0') {
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int maj = dAtoi(++name);
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while (dIsdigit(*name))
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*name++;
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int min = dAtoi(++name);
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return versionCombine(maj,min) <= versionCombine(major,minor);
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}
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return false;
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}
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} // Namespace
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