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#pragma once
#include <algorithm>
#include <GL/glew.h>
template<class T>
void endswap(T *objp) {
unsigned char *memp = reinterpret_cast<unsigned char *>(objp);
std::reverse(memp, memp + sizeof(T));
}
template<class T>
void endswap(T &obj) {
unsigned char *raw = reinterpret_cast<unsigned char *>(&obj);
std::reverse(raw, raw + sizeof(T));
}
inline void endswap(unsigned char *arr, size_t arrLen) {
std::reverse(arr, arr + arrLen);
}
inline GLenum glCheckError_(const char *file, int line) {
GLenum errorCode;
while ((errorCode = glGetError()) != GL_NO_ERROR) {
std::string error;
switch (errorCode) {
case GL_INVALID_ENUM:
error = "INVALID_ENUM";
break;
case GL_INVALID_VALUE:
error = "INVALID_VALUE";
break;
case GL_INVALID_OPERATION:
error = "INVALID_OPERATION";
break;
case GL_STACK_OVERFLOW:
error = "STACK_OVERFLOW";
break;
case GL_STACK_UNDERFLOW:
error = "STACK_UNDERFLOW";
break;
case GL_OUT_OF_MEMORY:
error = "OUT_OF_MEMORY";
break;
case GL_INVALID_FRAMEBUFFER_OPERATION:
error = "INVALID_FRAMEBUFFER_OPERATION";
break;
}
static int t = 0;
t++;
if (t>10)
LOG(FATAL);
LOG(ERROR) << "OpenGL error: " << error << " at " << file << ":" << line;
}
return errorCode;
}
#define glCheckError() glCheckError_(__FILE__, __LINE__)
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