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#ifndef MBGL_GL_GL
#define MBGL_GL_GL
//#define GL_TRACK
#include <string>
#include <stdexcept>
#include <vector>
#ifdef GL_TRACK
#include <iostream>
#endif
#if __APPLE__
#include "TargetConditionals.h"
#if TARGET_OS_IPHONE
#include <OpenGLES/ES2/gl.h>
#include <OpenGLES/ES2/glext.h>
#elif TARGET_IPHONE_SIMULATOR
#include <OpenGLES/ES2/gl.h>
#include <OpenGLES/ES2/glext.h>
#elif TARGET_OS_MAC
#include <OpenGL/OpenGL.h>
#include <OpenGL/gl.h>
#else
#error Unsupported Apple platform
#endif
#elif __ANDROID__ || MBGL_USE_GLES2
#define GL_GLEXT_PROTOTYPES
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#else
#define GL_GLEXT_PROTOTYPES
#include <GL/gl.h>
#include <GL/glext.h>
#endif
namespace mbgl {
namespace gl {
#ifdef GL_TRACK
typedef void (*GLDEBUGPROC)(GLenum source,
GLenum type,
GLuint id,
GLenum severity,
GLsizei length,
const GLchar *message,
const void *userParam);
template <class... Args> void mbx_trapExtension(const char *name, Args... args);
void mbx_trapExtension(const char *);
void mbx_trapExtension(const char *, GLint, const char *);
void mbx_trapExtension(const char *, GLsizei, GLuint *);
void mbx_trapExtension(const char *, GLsizei, const GLuint *);
void mbx_trapExtension(const char *, GLenum, GLenum, GLenum, GLsizei, const GLuint *, GLboolean);
void mbx_trapExtension(const char *, GLenum, GLuint, GLsizei, const GLchar *);
void mbx_trapExtension(const char *, GLDEBUGPROC, const void *);
void mbx_trapExtension(const char *, GLuint, GLuint, GLuint, GLuint, GLint, const char *, const void*);
void mbx_trapExtension(const char *name, GLuint array);
#endif
struct Error : ::std::runtime_error {
inline Error(GLenum err, const std::string &msg) : ::std::runtime_error(msg), code(err) {};
const GLenum code;
};
void checkError(const char *cmd, const char *file, int line);
#if defined(DEBUG)
#define MBGL_CHECK_ERROR(cmd) ([&]() { struct __MBGL_C_E { inline ~__MBGL_C_E() { ::mbgl::gl::checkError(#cmd, __FILE__, __LINE__); } } __MBGL_C_E; return cmd; }())
#else
#define MBGL_CHECK_ERROR(cmd) (cmd)
#endif
class ExtensionFunctionBase {
public:
static std::vector<ExtensionFunctionBase*>& functions();
typedef std::pair<const char *, const char *> Probe;
std::vector<Probe> probes;
void (*ptr)();
#ifdef GL_TRACK
const char *foundName;
#endif
};
template <class>
class ExtensionFunction;
template <class R, class... Args>
class ExtensionFunction<R (Args...)> : protected ExtensionFunctionBase {
public:
ExtensionFunction(std::initializer_list<Probe> probes_) {
probes = probes_;
ExtensionFunctionBase::functions().push_back(this);
}
explicit operator bool() const {
return ptr;
}
R operator()(Args... args) const {
#ifdef GL_TRACK
mbx_trapExtension(foundName, args...);
#endif
return (*reinterpret_cast<R (*)(Args...)>(ptr))(std::forward<Args>(args)...);
}
};
using glProc = void (*)();
void InitializeExtensions(glProc (*getProcAddress)(const char *));
extern ExtensionFunction<void (GLuint array)>
BindVertexArray;
extern ExtensionFunction<void (GLsizei n, const GLuint* arrays)>
DeleteVertexArrays;
extern ExtensionFunction<void (GLsizei n, GLuint* arrays)>
GenVertexArrays;
} // namespace gl
} // namespace mbgl
#ifdef GL_ES_VERSION_2_0
#define glClearDepth glClearDepthf
#define glDepthRange glDepthRangef
#endif
#ifdef GL_TRACK
#define glBindTexture mbx_glBindTexture
#define glDeleteTexture mbx_glDeleteTexture
#define glTexImage2D mbx_glTexImage2D
#define glClear mbx_glClear
#define glShaderSource mbx_glShaderSource
#define glBufferData mbx_glBufferData
#define glBindBuffer mbx_glBindBuffer
#define glDeleteBuffers mbx_glDeleteBuffers
void mbx_glDeleteBuffers(GLsizei n,
const GLuint * buffers);
void mbx_glBindBuffer(GLenum target,
GLuint buffer);
void mbx_glBufferData(GLenum target,
GLsizeiptr size,
const GLvoid * data,
GLenum usage);
void mbx_glShaderSource(GLuint shader,
GLsizei count,
const GLchar * const *string,
const GLint *length);
void mbx_glClear(GLbitfield mask);
void mbx_glBindTexture( GLenum target,
GLuint texture);
void mbx_glDeleteTextures(GLsizei n,
const GLuint * textures);
void mbx_glTexImage2D(GLenum target,
GLint level,
GLint internalformat,
GLsizei width,
GLsizei height,
GLint border,
GLenum format,
GLenum type,
const GLvoid * data);
#endif
#endif
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