#pragma once

#include <GLES2/gl2.h>

/* fails at link time, 
resorting to eglGetProcAddress

#define GL_GLEXT_PROTOTYPES 1
*/
#include <GLES2/gl2ext.h>

/* aarch64-linux-gnu/include/math.h already defines it */
#ifndef M_PI
#define M_PI	3.14159265358979323846264338327950288
#endif

/* GLES2 provides it as an extension */
#ifndef GL_DEPTH24_STENCIL8
#define GL_DEPTH24_STENCIL8 GL_DEPTH24_STENCIL8_OES
#endif

#ifndef GL_DEPTH_STENCIL_ATTACHMENT
#define GL_DEPTH_STENCIL_ATTACHMENT GL_DEPTH_STENCIL_OES
#endif

#ifndef GL_DRAW_FRAMEBUFFER
#define GL_DRAW_FRAMEBUFFER GL_DRAW_BUFFER0_EXT
#endif

void glGenVertexArrays( GLuint n, GLuint *arrays_ptr);

void glBindVertexArray( GLuint array_ptr);

void glDrawBuffers( GLsizei n,GLenum *buffers_ptr);

void GLES_3_1_compatibility_init();