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/**************************************************************************
*
* Copyright 2011 Jose Fonseca
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#include <assert.h>
#include <stdlib.h>
#include <iostream>
#include "glproc.hpp"
#include "glws.hpp"
namespace glws {
bool
checkExtension(const char *extName, const char *extString)
{
assert(extName);
if (!extString) {
return false;
}
const char *p = extString;
const char *q = extName;
char c;
do {
c = *p++;
if (c == '\0' || c == ' ') {
if (q && *q == '\0') {
return true;
} else {
q = extName;
}
} else {
if (q && *q == c) {
++q;
} else {
q = 0;
}
}
} while (c);
return false;
}
void
Drawable::copySubBuffer(int x, int y, int width, int height) {
std::cerr << "warning: copySubBuffer not yet implemented\n";
}
void
Context::initialize(void)
{
assert(!initialized);
actualProfile = glfeatures::getCurrentContextProfile();
actualExtensions.getCurrentContextExtensions(actualProfile);
actualFeatures.load(actualProfile, actualExtensions);
/* Ensure we got a matching profile.
*
* In particular on MacOSX, there is no way to specify specific versions, so this is all we can do.
*
* Also, see if OpenGL ES can be handled through ARB_ES*_compatibility.
*/
glfeatures::Profile expectedProfile = profile;
if (!actualProfile.matches(expectedProfile)) {
if (expectedProfile.api == glfeatures::API_GLES &&
actualProfile.api == glfeatures::API_GL &&
((expectedProfile.major == 2 && actualExtensions.has("GL_ARB_ES2_compatibility")) ||
(expectedProfile.major == 3 && actualExtensions.has("GL_ARB_ES3_compatibility")))) {
std::cerr << "warning: context mismatch:"
<< " expected " << expectedProfile << ","
<< " but got " << actualProfile << " with GL_ARB_ES" << expectedProfile.major << "_compatibility\n";
} else {
std::cerr << "error: context mismatch: expected " << expectedProfile << ", but got " << actualProfile << "\n";
exit(1);
}
}
initialized = true;
}
} /* namespace glws */
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