/**
 * SPDX-License-Identifier: (WTFPL OR CC0-1.0) AND Apache-2.0
 */

#include "../../lv_opengles_private.h"

#if LV_USE_EGL

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../include/glad/gles2.h"

#ifndef GLAD_IMPL_UTIL_C_
#define GLAD_IMPL_UTIL_C_

#ifdef _MSC_VER
#define GLAD_IMPL_UTIL_SSCANF sscanf_s
#else
#define GLAD_IMPL_UTIL_SSCANF sscanf
#endif

#endif /* GLAD_IMPL_UTIL_C_ */

#ifdef __cplusplus
extern "C" {
#endif



int GLAD_GL_ES_VERSION_2_0 = 0;
int GLAD_GL_APPLE_texture_max_level = 0;
int GLAD_GL_ARM_rgba8 = 0;
int GLAD_GL_EXT_color_buffer_float = 0;
int GLAD_GL_EXT_color_buffer_half_float = 0;
int GLAD_GL_EXT_texture_format_BGRA8888 = 0;
int GLAD_GL_EXT_texture_storage = 0;
int GLAD_GL_EXT_unpack_subimage = 0;
int GLAD_GL_OES_depth24 = 0;
int GLAD_GL_OES_mapbuffer = 0;
int GLAD_GL_OES_rgb8_rgba8 = 0;
int GLAD_GL_OES_texture_float = 0;
int GLAD_GL_OES_texture_half_float = 0;
int GLAD_GL_OES_texture_storage_multisample_2d_array = 0;
int GLAD_GL_OES_vertex_array_object = 0;



PFNGLACTIVETEXTUREPROC glad_glActiveTexture = NULL;
PFNGLATTACHSHADERPROC glad_glAttachShader = NULL;
PFNGLBINDATTRIBLOCATIONPROC glad_glBindAttribLocation = NULL;
PFNGLBINDBUFFERPROC glad_glBindBuffer = NULL;
PFNGLBINDFRAMEBUFFERPROC glad_glBindFramebuffer = NULL;
PFNGLBINDRENDERBUFFERPROC glad_glBindRenderbuffer = NULL;
PFNGLBINDTEXTUREPROC glad_glBindTexture = NULL;
PFNGLBINDVERTEXARRAYOESPROC glad_glBindVertexArrayOES = NULL;
PFNGLBLENDCOLORPROC glad_glBlendColor = NULL;
PFNGLBLENDEQUATIONPROC glad_glBlendEquation = NULL;
PFNGLBLENDEQUATIONSEPARATEPROC glad_glBlendEquationSeparate = NULL;
PFNGLBLENDFUNCPROC glad_glBlendFunc = NULL;
PFNGLBLENDFUNCSEPARATEPROC glad_glBlendFuncSeparate = NULL;
PFNGLBUFFERDATAPROC glad_glBufferData = NULL;
PFNGLBUFFERSUBDATAPROC glad_glBufferSubData = NULL;
PFNGLCHECKFRAMEBUFFERSTATUSPROC glad_glCheckFramebufferStatus = NULL;
PFNGLCLEARPROC glad_glClear = NULL;
PFNGLCLEARCOLORPROC glad_glClearColor = NULL;
PFNGLCLEARDEPTHFPROC glad_glClearDepthf = NULL;
PFNGLCLEARSTENCILPROC glad_glClearStencil = NULL;
PFNGLCOLORMASKPROC glad_glColorMask = NULL;
PFNGLCOMPILESHADERPROC glad_glCompileShader = NULL;
PFNGLCOMPRESSEDTEXIMAGE2DPROC glad_glCompressedTexImage2D = NULL;
PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC glad_glCompressedTexSubImage2D = NULL;
PFNGLCOPYTEXIMAGE2DPROC glad_glCopyTexImage2D = NULL;
PFNGLCOPYTEXSUBIMAGE2DPROC glad_glCopyTexSubImage2D = NULL;
PFNGLCREATEPROGRAMPROC glad_glCreateProgram = NULL;
PFNGLCREATESHADERPROC glad_glCreateShader = NULL;
PFNGLCULLFACEPROC glad_glCullFace = NULL;
PFNGLDELETEBUFFERSPROC glad_glDeleteBuffers = NULL;
PFNGLDELETEFRAMEBUFFERSPROC glad_glDeleteFramebuffers = NULL;
PFNGLDELETEPROGRAMPROC glad_glDeleteProgram = NULL;
PFNGLDELETERENDERBUFFERSPROC glad_glDeleteRenderbuffers = NULL;
PFNGLDELETESHADERPROC glad_glDeleteShader = NULL;
PFNGLDELETETEXTURESPROC glad_glDeleteTextures = NULL;
PFNGLDELETEVERTEXARRAYSOESPROC glad_glDeleteVertexArraysOES = NULL;
PFNGLDEPTHFUNCPROC glad_glDepthFunc = NULL;
PFNGLDEPTHMASKPROC glad_glDepthMask = NULL;
PFNGLDEPTHRANGEFPROC glad_glDepthRangef = NULL;
PFNGLDETACHSHADERPROC glad_glDetachShader = NULL;
PFNGLDISABLEPROC glad_glDisable = NULL;
PFNGLDISABLEVERTEXATTRIBARRAYPROC glad_glDisableVertexAttribArray = NULL;
PFNGLDRAWARRAYSPROC glad_glDrawArrays = NULL;
PFNGLDRAWELEMENTSPROC glad_glDrawElements = NULL;
PFNGLENABLEPROC glad_glEnable = NULL;
PFNGLENABLEVERTEXATTRIBARRAYPROC glad_glEnableVertexAttribArray = NULL;
PFNGLFINISHPROC glad_glFinish = NULL;
PFNGLFLUSHPROC glad_glFlush = NULL;
PFNGLFRAMEBUFFERRENDERBUFFERPROC glad_glFramebufferRenderbuffer = NULL;
PFNGLFRAMEBUFFERTEXTURE2DPROC glad_glFramebufferTexture2D = NULL;
PFNGLFRONTFACEPROC glad_glFrontFace = NULL;
PFNGLGENBUFFERSPROC glad_glGenBuffers = NULL;
PFNGLGENFRAMEBUFFERSPROC glad_glGenFramebuffers = NULL;
PFNGLGENRENDERBUFFERSPROC glad_glGenRenderbuffers = NULL;
PFNGLGENTEXTURESPROC glad_glGenTextures = NULL;
PFNGLGENVERTEXARRAYSOESPROC glad_glGenVertexArraysOES = NULL;
PFNGLGENERATEMIPMAPPROC glad_glGenerateMipmap = NULL;
PFNGLGETACTIVEATTRIBPROC glad_glGetActiveAttrib = NULL;
PFNGLGETACTIVEUNIFORMPROC glad_glGetActiveUniform = NULL;
PFNGLGETATTACHEDSHADERSPROC glad_glGetAttachedShaders = NULL;
PFNGLGETATTRIBLOCATIONPROC glad_glGetAttribLocation = NULL;
PFNGLGETBOOLEANVPROC glad_glGetBooleanv = NULL;
PFNGLGETBUFFERPARAMETERIVPROC glad_glGetBufferParameteriv = NULL;
PFNGLGETBUFFERPOINTERVOESPROC glad_glGetBufferPointervOES = NULL;
PFNGLGETERRORPROC glad_glGetError = NULL;
PFNGLGETFLOATVPROC glad_glGetFloatv = NULL;
PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glad_glGetFramebufferAttachmentParameteriv = NULL;
PFNGLGETINTEGERVPROC glad_glGetIntegerv = NULL;
PFNGLGETPROGRAMINFOLOGPROC glad_glGetProgramInfoLog = NULL;
PFNGLGETPROGRAMIVPROC glad_glGetProgramiv = NULL;
PFNGLGETRENDERBUFFERPARAMETERIVPROC glad_glGetRenderbufferParameteriv = NULL;
PFNGLGETSHADERINFOLOGPROC glad_glGetShaderInfoLog = NULL;
PFNGLGETSHADERPRECISIONFORMATPROC glad_glGetShaderPrecisionFormat = NULL;
PFNGLGETSHADERSOURCEPROC glad_glGetShaderSource = NULL;
PFNGLGETSHADERIVPROC glad_glGetShaderiv = NULL;
PFNGLGETSTRINGPROC glad_glGetString = NULL;
PFNGLGETTEXPARAMETERFVPROC glad_glGetTexParameterfv = NULL;
PFNGLGETTEXPARAMETERIVPROC glad_glGetTexParameteriv = NULL;
PFNGLGETUNIFORMLOCATIONPROC glad_glGetUniformLocation = NULL;
PFNGLGETUNIFORMFVPROC glad_glGetUniformfv = NULL;
PFNGLGETUNIFORMIVPROC glad_glGetUniformiv = NULL;
PFNGLGETVERTEXATTRIBPOINTERVPROC glad_glGetVertexAttribPointerv = NULL;
PFNGLGETVERTEXATTRIBFVPROC glad_glGetVertexAttribfv = NULL;
PFNGLGETVERTEXATTRIBIVPROC glad_glGetVertexAttribiv = NULL;
PFNGLHINTPROC glad_glHint = NULL;
PFNGLISBUFFERPROC glad_glIsBuffer = NULL;
PFNGLISENABLEDPROC glad_glIsEnabled = NULL;
PFNGLISFRAMEBUFFERPROC glad_glIsFramebuffer = NULL;
PFNGLISPROGRAMPROC glad_glIsProgram = NULL;
PFNGLISRENDERBUFFERPROC glad_glIsRenderbuffer = NULL;
PFNGLISSHADERPROC glad_glIsShader = NULL;
PFNGLISTEXTUREPROC glad_glIsTexture = NULL;
PFNGLISVERTEXARRAYOESPROC glad_glIsVertexArrayOES = NULL;
PFNGLLINEWIDTHPROC glad_glLineWidth = NULL;
PFNGLLINKPROGRAMPROC glad_glLinkProgram = NULL;
PFNGLMAPBUFFEROESPROC glad_glMapBufferOES = NULL;
PFNGLPIXELSTOREIPROC glad_glPixelStorei = NULL;
PFNGLPOLYGONOFFSETPROC glad_glPolygonOffset = NULL;
PFNGLREADPIXELSPROC glad_glReadPixels = NULL;
PFNGLRELEASESHADERCOMPILERPROC glad_glReleaseShaderCompiler = NULL;
PFNGLRENDERBUFFERSTORAGEPROC glad_glRenderbufferStorage = NULL;
PFNGLSAMPLECOVERAGEPROC glad_glSampleCoverage = NULL;
PFNGLSCISSORPROC glad_glScissor = NULL;
PFNGLSHADERBINARYPROC glad_glShaderBinary = NULL;
PFNGLSHADERSOURCEPROC glad_glShaderSource = NULL;
PFNGLSTENCILFUNCPROC glad_glStencilFunc = NULL;
PFNGLSTENCILFUNCSEPARATEPROC glad_glStencilFuncSeparate = NULL;
PFNGLSTENCILMASKPROC glad_glStencilMask = NULL;
PFNGLSTENCILMASKSEPARATEPROC glad_glStencilMaskSeparate = NULL;
PFNGLSTENCILOPPROC glad_glStencilOp = NULL;
PFNGLSTENCILOPSEPARATEPROC glad_glStencilOpSeparate = NULL;
PFNGLTEXIMAGE2DPROC glad_glTexImage2D = NULL;
PFNGLTEXPARAMETERFPROC glad_glTexParameterf = NULL;
PFNGLTEXPARAMETERFVPROC glad_glTexParameterfv = NULL;
PFNGLTEXPARAMETERIPROC glad_glTexParameteri = NULL;
PFNGLTEXPARAMETERIVPROC glad_glTexParameteriv = NULL;
PFNGLTEXSTORAGE1DEXTPROC glad_glTexStorage1DEXT = NULL;
PFNGLTEXSTORAGE2DEXTPROC glad_glTexStorage2DEXT = NULL;
PFNGLTEXSTORAGE3DEXTPROC glad_glTexStorage3DEXT = NULL;
PFNGLTEXSTORAGE3DMULTISAMPLEOESPROC glad_glTexStorage3DMultisampleOES = NULL;
PFNGLTEXSUBIMAGE2DPROC glad_glTexSubImage2D = NULL;
PFNGLTEXTURESTORAGE1DEXTPROC glad_glTextureStorage1DEXT = NULL;
PFNGLTEXTURESTORAGE2DEXTPROC glad_glTextureStorage2DEXT = NULL;
PFNGLTEXTURESTORAGE3DEXTPROC glad_glTextureStorage3DEXT = NULL;
PFNGLUNIFORM1FPROC glad_glUniform1f = NULL;
PFNGLUNIFORM1FVPROC glad_glUniform1fv = NULL;
PFNGLUNIFORM1IPROC glad_glUniform1i = NULL;
PFNGLUNIFORM1IVPROC glad_glUniform1iv = NULL;
PFNGLUNIFORM2FPROC glad_glUniform2f = NULL;
PFNGLUNIFORM2FVPROC glad_glUniform2fv = NULL;
PFNGLUNIFORM2IPROC glad_glUniform2i = NULL;
PFNGLUNIFORM2IVPROC glad_glUniform2iv = NULL;
PFNGLUNIFORM3FPROC glad_glUniform3f = NULL;
PFNGLUNIFORM3FVPROC glad_glUniform3fv = NULL;
PFNGLUNIFORM3IPROC glad_glUniform3i = NULL;
PFNGLUNIFORM3IVPROC glad_glUniform3iv = NULL;
PFNGLUNIFORM4FPROC glad_glUniform4f = NULL;
PFNGLUNIFORM4FVPROC glad_glUniform4fv = NULL;
PFNGLUNIFORM4IPROC glad_glUniform4i = NULL;
PFNGLUNIFORM4IVPROC glad_glUniform4iv = NULL;
PFNGLUNIFORMMATRIX2FVPROC glad_glUniformMatrix2fv = NULL;
PFNGLUNIFORMMATRIX3FVPROC glad_glUniformMatrix3fv = NULL;
PFNGLUNIFORMMATRIX4FVPROC glad_glUniformMatrix4fv = NULL;
PFNGLUNMAPBUFFEROESPROC glad_glUnmapBufferOES = NULL;
PFNGLUSEPROGRAMPROC glad_glUseProgram = NULL;
PFNGLVALIDATEPROGRAMPROC glad_glValidateProgram = NULL;
PFNGLVERTEXATTRIB1FPROC glad_glVertexAttrib1f = NULL;
PFNGLVERTEXATTRIB1FVPROC glad_glVertexAttrib1fv = NULL;
PFNGLVERTEXATTRIB2FPROC glad_glVertexAttrib2f = NULL;
PFNGLVERTEXATTRIB2FVPROC glad_glVertexAttrib2fv = NULL;
PFNGLVERTEXATTRIB3FPROC glad_glVertexAttrib3f = NULL;
PFNGLVERTEXATTRIB3FVPROC glad_glVertexAttrib3fv = NULL;
PFNGLVERTEXATTRIB4FPROC glad_glVertexAttrib4f = NULL;
PFNGLVERTEXATTRIB4FVPROC glad_glVertexAttrib4fv = NULL;
PFNGLVERTEXATTRIBPOINTERPROC glad_glVertexAttribPointer = NULL;
PFNGLVIEWPORTPROC glad_glViewport = NULL;


static void glad_gl_load_GL_ES_VERSION_2_0( GLADuserptrloadfunc load, void* userptr) {
    if(!GLAD_GL_ES_VERSION_2_0) return;
    glad_glActiveTexture = (PFNGLACTIVETEXTUREPROC) load(userptr, "glActiveTexture");
    glad_glAttachShader = (PFNGLATTACHSHADERPROC) load(userptr, "glAttachShader");
    glad_glBindAttribLocation = (PFNGLBINDATTRIBLOCATIONPROC) load(userptr, "glBindAttribLocation");
    glad_glBindBuffer = (PFNGLBINDBUFFERPROC) load(userptr, "glBindBuffer");
    glad_glBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC) load(userptr, "glBindFramebuffer");
    glad_glBindRenderbuffer = (PFNGLBINDRENDERBUFFERPROC) load(userptr, "glBindRenderbuffer");
    glad_glBindTexture = (PFNGLBINDTEXTUREPROC) load(userptr, "glBindTexture");
    glad_glBlendColor = (PFNGLBLENDCOLORPROC) load(userptr, "glBlendColor");
    glad_glBlendEquation = (PFNGLBLENDEQUATIONPROC) load(userptr, "glBlendEquation");
    glad_glBlendEquationSeparate = (PFNGLBLENDEQUATIONSEPARATEPROC) load(userptr, "glBlendEquationSeparate");
    glad_glBlendFunc = (PFNGLBLENDFUNCPROC) load(userptr, "glBlendFunc");
    glad_glBlendFuncSeparate = (PFNGLBLENDFUNCSEPARATEPROC) load(userptr, "glBlendFuncSeparate");
    glad_glBufferData = (PFNGLBUFFERDATAPROC) load(userptr, "glBufferData");
    glad_glBufferSubData = (PFNGLBUFFERSUBDATAPROC) load(userptr, "glBufferSubData");
    glad_glCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC) load(userptr, "glCheckFramebufferStatus");
    glad_glClear = (PFNGLCLEARPROC) load(userptr, "glClear");
    glad_glClearColor = (PFNGLCLEARCOLORPROC) load(userptr, "glClearColor");
    glad_glClearDepthf = (PFNGLCLEARDEPTHFPROC) load(userptr, "glClearDepthf");
    glad_glClearStencil = (PFNGLCLEARSTENCILPROC) load(userptr, "glClearStencil");
    glad_glColorMask = (PFNGLCOLORMASKPROC) load(userptr, "glColorMask");
    glad_glCompileShader = (PFNGLCOMPILESHADERPROC) load(userptr, "glCompileShader");
    glad_glCompressedTexImage2D = (PFNGLCOMPRESSEDTEXIMAGE2DPROC) load(userptr, "glCompressedTexImage2D");
    glad_glCompressedTexSubImage2D = (PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC) load(userptr, "glCompressedTexSubImage2D");
    glad_glCopyTexImage2D = (PFNGLCOPYTEXIMAGE2DPROC) load(userptr, "glCopyTexImage2D");
    glad_glCopyTexSubImage2D = (PFNGLCOPYTEXSUBIMAGE2DPROC) load(userptr, "glCopyTexSubImage2D");
    glad_glCreateProgram = (PFNGLCREATEPROGRAMPROC) load(userptr, "glCreateProgram");
    glad_glCreateShader = (PFNGLCREATESHADERPROC) load(userptr, "glCreateShader");
    glad_glCullFace = (PFNGLCULLFACEPROC) load(userptr, "glCullFace");
    glad_glDeleteBuffers = (PFNGLDELETEBUFFERSPROC) load(userptr, "glDeleteBuffers");
    glad_glDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC) load(userptr, "glDeleteFramebuffers");
    glad_glDeleteProgram = (PFNGLDELETEPROGRAMPROC) load(userptr, "glDeleteProgram");
    glad_glDeleteRenderbuffers = (PFNGLDELETERENDERBUFFERSPROC) load(userptr, "glDeleteRenderbuffers");
    glad_glDeleteShader = (PFNGLDELETESHADERPROC) load(userptr, "glDeleteShader");
    glad_glDeleteTextures = (PFNGLDELETETEXTURESPROC) load(userptr, "glDeleteTextures");
    glad_glDepthFunc = (PFNGLDEPTHFUNCPROC) load(userptr, "glDepthFunc");
    glad_glDepthMask = (PFNGLDEPTHMASKPROC) load(userptr, "glDepthMask");
    glad_glDepthRangef = (PFNGLDEPTHRANGEFPROC) load(userptr, "glDepthRangef");
    glad_glDetachShader = (PFNGLDETACHSHADERPROC) load(userptr, "glDetachShader");
    glad_glDisable = (PFNGLDISABLEPROC) load(userptr, "glDisable");
    glad_glDisableVertexAttribArray = (PFNGLDISABLEVERTEXATTRIBARRAYPROC) load(userptr, "glDisableVertexAttribArray");
    glad_glDrawArrays = (PFNGLDRAWARRAYSPROC) load(userptr, "glDrawArrays");
    glad_glDrawElements = (PFNGLDRAWELEMENTSPROC) load(userptr, "glDrawElements");
    glad_glEnable = (PFNGLENABLEPROC) load(userptr, "glEnable");
    glad_glEnableVertexAttribArray = (PFNGLENABLEVERTEXATTRIBARRAYPROC) load(userptr, "glEnableVertexAttribArray");
    glad_glFinish = (PFNGLFINISHPROC) load(userptr, "glFinish");
    glad_glFlush = (PFNGLFLUSHPROC) load(userptr, "glFlush");
    glad_glFramebufferRenderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFERPROC) load(userptr, "glFramebufferRenderbuffer");
    glad_glFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DPROC) load(userptr, "glFramebufferTexture2D");
    glad_glFrontFace = (PFNGLFRONTFACEPROC) load(userptr, "glFrontFace");
    glad_glGenBuffers = (PFNGLGENBUFFERSPROC) load(userptr, "glGenBuffers");
    glad_glGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC) load(userptr, "glGenFramebuffers");
    glad_glGenRenderbuffers = (PFNGLGENRENDERBUFFERSPROC) load(userptr, "glGenRenderbuffers");
    glad_glGenTextures = (PFNGLGENTEXTURESPROC) load(userptr, "glGenTextures");
    glad_glGenerateMipmap = (PFNGLGENERATEMIPMAPPROC) load(userptr, "glGenerateMipmap");
    glad_glGetActiveAttrib = (PFNGLGETACTIVEATTRIBPROC) load(userptr, "glGetActiveAttrib");
    glad_glGetActiveUniform = (PFNGLGETACTIVEUNIFORMPROC) load(userptr, "glGetActiveUniform");
    glad_glGetAttachedShaders = (PFNGLGETATTACHEDSHADERSPROC) load(userptr, "glGetAttachedShaders");
    glad_glGetAttribLocation = (PFNGLGETATTRIBLOCATIONPROC) load(userptr, "glGetAttribLocation");
    glad_glGetBooleanv = (PFNGLGETBOOLEANVPROC) load(userptr, "glGetBooleanv");
    glad_glGetBufferParameteriv = (PFNGLGETBUFFERPARAMETERIVPROC) load(userptr, "glGetBufferParameteriv");
    glad_glGetError = (PFNGLGETERRORPROC) load(userptr, "glGetError");
    glad_glGetFloatv = (PFNGLGETFLOATVPROC) load(userptr, "glGetFloatv");
    glad_glGetFramebufferAttachmentParameteriv = (PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC) load(userptr, "glGetFramebufferAttachmentParameteriv");
    glad_glGetIntegerv = (PFNGLGETINTEGERVPROC) load(userptr, "glGetIntegerv");
    glad_glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) load(userptr, "glGetProgramInfoLog");
    glad_glGetProgramiv = (PFNGLGETPROGRAMIVPROC) load(userptr, "glGetProgramiv");
    glad_glGetRenderbufferParameteriv = (PFNGLGETRENDERBUFFERPARAMETERIVPROC) load(userptr, "glGetRenderbufferParameteriv");
    glad_glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) load(userptr, "glGetShaderInfoLog");
    glad_glGetShaderPrecisionFormat = (PFNGLGETSHADERPRECISIONFORMATPROC) load(userptr, "glGetShaderPrecisionFormat");
    glad_glGetShaderSource = (PFNGLGETSHADERSOURCEPROC) load(userptr, "glGetShaderSource");
    glad_glGetShaderiv = (PFNGLGETSHADERIVPROC) load(userptr, "glGetShaderiv");
    glad_glGetString = (PFNGLGETSTRINGPROC) load(userptr, "glGetString");
    glad_glGetTexParameterfv = (PFNGLGETTEXPARAMETERFVPROC) load(userptr, "glGetTexParameterfv");
    glad_glGetTexParameteriv = (PFNGLGETTEXPARAMETERIVPROC) load(userptr, "glGetTexParameteriv");
    glad_glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) load(userptr, "glGetUniformLocation");
    glad_glGetUniformfv = (PFNGLGETUNIFORMFVPROC) load(userptr, "glGetUniformfv");
    glad_glGetUniformiv = (PFNGLGETUNIFORMIVPROC) load(userptr, "glGetUniformiv");
    glad_glGetVertexAttribPointerv = (PFNGLGETVERTEXATTRIBPOINTERVPROC) load(userptr, "glGetVertexAttribPointerv");
    glad_glGetVertexAttribfv = (PFNGLGETVERTEXATTRIBFVPROC) load(userptr, "glGetVertexAttribfv");
    glad_glGetVertexAttribiv = (PFNGLGETVERTEXATTRIBIVPROC) load(userptr, "glGetVertexAttribiv");
    glad_glHint = (PFNGLHINTPROC) load(userptr, "glHint");
    glad_glIsBuffer = (PFNGLISBUFFERPROC) load(userptr, "glIsBuffer");
    glad_glIsEnabled = (PFNGLISENABLEDPROC) load(userptr, "glIsEnabled");
    glad_glIsFramebuffer = (PFNGLISFRAMEBUFFERPROC) load(userptr, "glIsFramebuffer");
    glad_glIsProgram = (PFNGLISPROGRAMPROC) load(userptr, "glIsProgram");
    glad_glIsRenderbuffer = (PFNGLISRENDERBUFFERPROC) load(userptr, "glIsRenderbuffer");
    glad_glIsShader = (PFNGLISSHADERPROC) load(userptr, "glIsShader");
    glad_glIsTexture = (PFNGLISTEXTUREPROC) load(userptr, "glIsTexture");
    glad_glLineWidth = (PFNGLLINEWIDTHPROC) load(userptr, "glLineWidth");
    glad_glLinkProgram = (PFNGLLINKPROGRAMPROC) load(userptr, "glLinkProgram");
    glad_glPixelStorei = (PFNGLPIXELSTOREIPROC) load(userptr, "glPixelStorei");
    glad_glPolygonOffset = (PFNGLPOLYGONOFFSETPROC) load(userptr, "glPolygonOffset");
    glad_glReadPixels = (PFNGLREADPIXELSPROC) load(userptr, "glReadPixels");
    glad_glReleaseShaderCompiler = (PFNGLRELEASESHADERCOMPILERPROC) load(userptr, "glReleaseShaderCompiler");
    glad_glRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEPROC) load(userptr, "glRenderbufferStorage");
    glad_glSampleCoverage = (PFNGLSAMPLECOVERAGEPROC) load(userptr, "glSampleCoverage");
    glad_glScissor = (PFNGLSCISSORPROC) load(userptr, "glScissor");
    glad_glShaderBinary = (PFNGLSHADERBINARYPROC) load(userptr, "glShaderBinary");
    glad_glShaderSource = (PFNGLSHADERSOURCEPROC) load(userptr, "glShaderSource");
    glad_glStencilFunc = (PFNGLSTENCILFUNCPROC) load(userptr, "glStencilFunc");
    glad_glStencilFuncSeparate = (PFNGLSTENCILFUNCSEPARATEPROC) load(userptr, "glStencilFuncSeparate");
    glad_glStencilMask = (PFNGLSTENCILMASKPROC) load(userptr, "glStencilMask");
    glad_glStencilMaskSeparate = (PFNGLSTENCILMASKSEPARATEPROC) load(userptr, "glStencilMaskSeparate");
    glad_glStencilOp = (PFNGLSTENCILOPPROC) load(userptr, "glStencilOp");
    glad_glStencilOpSeparate = (PFNGLSTENCILOPSEPARATEPROC) load(userptr, "glStencilOpSeparate");
    glad_glTexImage2D = (PFNGLTEXIMAGE2DPROC) load(userptr, "glTexImage2D");
    glad_glTexParameterf = (PFNGLTEXPARAMETERFPROC) load(userptr, "glTexParameterf");
    glad_glTexParameterfv = (PFNGLTEXPARAMETERFVPROC) load(userptr, "glTexParameterfv");
    glad_glTexParameteri = (PFNGLTEXPARAMETERIPROC) load(userptr, "glTexParameteri");
    glad_glTexParameteriv = (PFNGLTEXPARAMETERIVPROC) load(userptr, "glTexParameteriv");
    glad_glTexSubImage2D = (PFNGLTEXSUBIMAGE2DPROC) load(userptr, "glTexSubImage2D");
    glad_glUniform1f = (PFNGLUNIFORM1FPROC) load(userptr, "glUniform1f");
    glad_glUniform1fv = (PFNGLUNIFORM1FVPROC) load(userptr, "glUniform1fv");
    glad_glUniform1i = (PFNGLUNIFORM1IPROC) load(userptr, "glUniform1i");
    glad_glUniform1iv = (PFNGLUNIFORM1IVPROC) load(userptr, "glUniform1iv");
    glad_glUniform2f = (PFNGLUNIFORM2FPROC) load(userptr, "glUniform2f");
    glad_glUniform2fv = (PFNGLUNIFORM2FVPROC) load(userptr, "glUniform2fv");
    glad_glUniform2i = (PFNGLUNIFORM2IPROC) load(userptr, "glUniform2i");
    glad_glUniform2iv = (PFNGLUNIFORM2IVPROC) load(userptr, "glUniform2iv");
    glad_glUniform3f = (PFNGLUNIFORM3FPROC) load(userptr, "glUniform3f");
    glad_glUniform3fv = (PFNGLUNIFORM3FVPROC) load(userptr, "glUniform3fv");
    glad_glUniform3i = (PFNGLUNIFORM3IPROC) load(userptr, "glUniform3i");
    glad_glUniform3iv = (PFNGLUNIFORM3IVPROC) load(userptr, "glUniform3iv");
    glad_glUniform4f = (PFNGLUNIFORM4FPROC) load(userptr, "glUniform4f");
    glad_glUniform4fv = (PFNGLUNIFORM4FVPROC) load(userptr, "glUniform4fv");
    glad_glUniform4i = (PFNGLUNIFORM4IPROC) load(userptr, "glUniform4i");
    glad_glUniform4iv = (PFNGLUNIFORM4IVPROC) load(userptr, "glUniform4iv");
    glad_glUniformMatrix2fv = (PFNGLUNIFORMMATRIX2FVPROC) load(userptr, "glUniformMatrix2fv");
    glad_glUniformMatrix3fv = (PFNGLUNIFORMMATRIX3FVPROC) load(userptr, "glUniformMatrix3fv");
    glad_glUniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC) load(userptr, "glUniformMatrix4fv");
    glad_glUseProgram = (PFNGLUSEPROGRAMPROC) load(userptr, "glUseProgram");
    glad_glValidateProgram = (PFNGLVALIDATEPROGRAMPROC) load(userptr, "glValidateProgram");
    glad_glVertexAttrib1f = (PFNGLVERTEXATTRIB1FPROC) load(userptr, "glVertexAttrib1f");
    glad_glVertexAttrib1fv = (PFNGLVERTEXATTRIB1FVPROC) load(userptr, "glVertexAttrib1fv");
    glad_glVertexAttrib2f = (PFNGLVERTEXATTRIB2FPROC) load(userptr, "glVertexAttrib2f");
    glad_glVertexAttrib2fv = (PFNGLVERTEXATTRIB2FVPROC) load(userptr, "glVertexAttrib2fv");
    glad_glVertexAttrib3f = (PFNGLVERTEXATTRIB3FPROC) load(userptr, "glVertexAttrib3f");
    glad_glVertexAttrib3fv = (PFNGLVERTEXATTRIB3FVPROC) load(userptr, "glVertexAttrib3fv");
    glad_glVertexAttrib4f = (PFNGLVERTEXATTRIB4FPROC) load(userptr, "glVertexAttrib4f");
    glad_glVertexAttrib4fv = (PFNGLVERTEXATTRIB4FVPROC) load(userptr, "glVertexAttrib4fv");
    glad_glVertexAttribPointer = (PFNGLVERTEXATTRIBPOINTERPROC) load(userptr, "glVertexAttribPointer");
    glad_glViewport = (PFNGLVIEWPORTPROC) load(userptr, "glViewport");
}
static void glad_gl_load_GL_EXT_texture_storage( GLADuserptrloadfunc load, void* userptr) {
    if(!GLAD_GL_EXT_texture_storage) return;
    glad_glTexStorage1DEXT = (PFNGLTEXSTORAGE1DEXTPROC) load(userptr, "glTexStorage1DEXT");
    glad_glTexStorage2DEXT = (PFNGLTEXSTORAGE2DEXTPROC) load(userptr, "glTexStorage2DEXT");
    glad_glTexStorage3DEXT = (PFNGLTEXSTORAGE3DEXTPROC) load(userptr, "glTexStorage3DEXT");
    glad_glTextureStorage1DEXT = (PFNGLTEXTURESTORAGE1DEXTPROC) load(userptr, "glTextureStorage1DEXT");
    glad_glTextureStorage2DEXT = (PFNGLTEXTURESTORAGE2DEXTPROC) load(userptr, "glTextureStorage2DEXT");
    glad_glTextureStorage3DEXT = (PFNGLTEXTURESTORAGE3DEXTPROC) load(userptr, "glTextureStorage3DEXT");
}
static void glad_gl_load_GL_OES_mapbuffer( GLADuserptrloadfunc load, void* userptr) {
    if(!GLAD_GL_OES_mapbuffer) return;
    glad_glGetBufferPointervOES = (PFNGLGETBUFFERPOINTERVOESPROC) load(userptr, "glGetBufferPointervOES");
    glad_glMapBufferOES = (PFNGLMAPBUFFEROESPROC) load(userptr, "glMapBufferOES");
    glad_glUnmapBufferOES = (PFNGLUNMAPBUFFEROESPROC) load(userptr, "glUnmapBufferOES");
}
static void glad_gl_load_GL_OES_texture_storage_multisample_2d_array( GLADuserptrloadfunc load, void* userptr) {
    if(!GLAD_GL_OES_texture_storage_multisample_2d_array) return;
    glad_glTexStorage3DMultisampleOES = (PFNGLTEXSTORAGE3DMULTISAMPLEOESPROC) load(userptr, "glTexStorage3DMultisampleOES");
}
static void glad_gl_load_GL_OES_vertex_array_object( GLADuserptrloadfunc load, void* userptr) {
    if(!GLAD_GL_OES_vertex_array_object) return;
    glad_glBindVertexArrayOES = (PFNGLBINDVERTEXARRAYOESPROC) load(userptr, "glBindVertexArrayOES");
    glad_glDeleteVertexArraysOES = (PFNGLDELETEVERTEXARRAYSOESPROC) load(userptr, "glDeleteVertexArraysOES");
    glad_glGenVertexArraysOES = (PFNGLGENVERTEXARRAYSOESPROC) load(userptr, "glGenVertexArraysOES");
    glad_glIsVertexArrayOES = (PFNGLISVERTEXARRAYOESPROC) load(userptr, "glIsVertexArrayOES");
}


static void glad_gl_resolve_aliases(void) {
}

static void glad_gl_free_extensions(char **exts_i) {
    if (exts_i != NULL) {
        unsigned int index;
        for(index = 0; exts_i[index]; index++) {
            free((void *) (exts_i[index]));
        }
        free((void *)exts_i);
        exts_i = NULL;
    }
}
static int glad_gl_get_extensions( const char **out_exts, char ***out_exts_i) {
#if defined(GL_ES_VERSION_3_0) || defined(GL_VERSION_3_0)
    if (glad_glGetStringi != NULL && glad_glGetIntegerv != NULL) {
        unsigned int index = 0;
        unsigned int num_exts_i = 0;
        char **exts_i = NULL;
        glad_glGetIntegerv(GL_NUM_EXTENSIONS, (int*) &num_exts_i);
        exts_i = (char **) malloc((num_exts_i + 1) * (sizeof *exts_i));
        if (exts_i == NULL) {
            return 0;
        }
        for(index = 0; index < num_exts_i; index++) {
            const char *gl_str_tmp = (const char*) glad_glGetStringi(GL_EXTENSIONS, index);
            size_t len = strlen(gl_str_tmp) + 1;

            char *local_str = (char*) malloc(len * sizeof(char));
            if(local_str == NULL) {
                exts_i[index] = NULL;
                glad_gl_free_extensions(exts_i);
                return 0;
            }

            memcpy(local_str, gl_str_tmp, len * sizeof(char));
            exts_i[index] = local_str;
        }
        exts_i[index] = NULL;

        *out_exts_i = exts_i;

        return 1;
    }
#else
    GLAD_UNUSED(out_exts_i);
#endif
    if (glad_glGetString == NULL) {
        return 0;
    }
    *out_exts = (const char *)glad_glGetString(GL_EXTENSIONS);
    return 1;
}
static int glad_gl_has_extension(const char *exts, char **exts_i, const char *ext) {
    if(exts_i) {
        unsigned int index;
        for(index = 0; exts_i[index]; index++) {
            const char *e = exts_i[index];
            if(strcmp(e, ext) == 0) {
                return 1;
            }
        }
    } else {
        const char *extensions;
        const char *loc;
        const char *terminator;
        extensions = exts;
        if(extensions == NULL || ext == NULL) {
            return 0;
        }
        while(1) {
            loc = strstr(extensions, ext);
            if(loc == NULL) {
                return 0;
            }
            terminator = loc + strlen(ext);
            if((loc == extensions || *(loc - 1) == ' ') &&
                (*terminator == ' ' || *terminator == '\0')) {
                return 1;
            }
            extensions = terminator;
        }
    }
    return 0;
}

static GLADapiproc glad_gl_get_proc_from_userptr(void *userptr, const char* name) {
    return (GLAD_GNUC_EXTENSION (GLADapiproc (*)(const char *name)) userptr)(name);
}

static int glad_gl_find_extensions_gles2(void) {
    const char *exts = NULL;
    char **exts_i = NULL;
    if (!glad_gl_get_extensions(&exts, &exts_i)) return 0;

    GLAD_GL_APPLE_texture_max_level = glad_gl_has_extension(exts, exts_i, "GL_APPLE_texture_max_level");
    GLAD_GL_ARM_rgba8 = glad_gl_has_extension(exts, exts_i, "GL_ARM_rgba8");
    GLAD_GL_EXT_color_buffer_float = glad_gl_has_extension(exts, exts_i, "GL_EXT_color_buffer_float");
    GLAD_GL_EXT_color_buffer_half_float = glad_gl_has_extension(exts, exts_i, "GL_EXT_color_buffer_half_float");
    GLAD_GL_EXT_texture_format_BGRA8888 = glad_gl_has_extension(exts, exts_i, "GL_EXT_texture_format_BGRA8888");
    GLAD_GL_EXT_texture_storage = glad_gl_has_extension(exts, exts_i, "GL_EXT_texture_storage");
    GLAD_GL_EXT_unpack_subimage = glad_gl_has_extension(exts, exts_i, "GL_EXT_unpack_subimage");
    GLAD_GL_OES_depth24 = glad_gl_has_extension(exts, exts_i, "GL_OES_depth24");
    GLAD_GL_OES_mapbuffer = glad_gl_has_extension(exts, exts_i, "GL_OES_mapbuffer");
    GLAD_GL_OES_rgb8_rgba8 = glad_gl_has_extension(exts, exts_i, "GL_OES_rgb8_rgba8");
    GLAD_GL_OES_texture_float = glad_gl_has_extension(exts, exts_i, "GL_OES_texture_float");
    GLAD_GL_OES_texture_half_float = glad_gl_has_extension(exts, exts_i, "GL_OES_texture_half_float");
    GLAD_GL_OES_texture_storage_multisample_2d_array = glad_gl_has_extension(exts, exts_i, "GL_OES_texture_storage_multisample_2d_array");
    GLAD_GL_OES_vertex_array_object = glad_gl_has_extension(exts, exts_i, "GL_OES_vertex_array_object");

    glad_gl_free_extensions(exts_i);

    return 1;
}

static int glad_gl_find_core_gles2(void) {
    int i;
    const char* version;
    const char* prefixes[] = {
        "OpenGL ES-CM ",
        "OpenGL ES-CL ",
        "OpenGL ES ",
        "OpenGL SC ",
        NULL
    };
    int major = 0;
    int minor = 0;
    version = (const char*) glad_glGetString(GL_VERSION);
    if (!version) return 0;
    for (i = 0;  prefixes[i];  i++) {
        const size_t length = strlen(prefixes[i]);
        if (strncmp(version, prefixes[i], length) == 0) {
            version += length;
            break;
        }
    }

    GLAD_IMPL_UTIL_SSCANF(version, "%d.%d", &major, &minor);

    GLAD_GL_ES_VERSION_2_0 = (major == 2 && minor >= 0) || major > 2;

    return GLAD_MAKE_VERSION(major, minor);
}

int gladLoadGLES2UserPtr( GLADuserptrloadfunc load, void *userptr) {
    int version;

    glad_glGetString = (PFNGLGETSTRINGPROC) load(userptr, "glGetString");
    if(glad_glGetString == NULL) return 0;
    version = glad_gl_find_core_gles2();

    glad_gl_load_GL_ES_VERSION_2_0(load, userptr);

    if (!glad_gl_find_extensions_gles2()) return 0;
    glad_gl_load_GL_EXT_texture_storage(load, userptr);
    glad_gl_load_GL_OES_mapbuffer(load, userptr);
    glad_gl_load_GL_OES_texture_storage_multisample_2d_array(load, userptr);
    glad_gl_load_GL_OES_vertex_array_object(load, userptr);


    glad_gl_resolve_aliases();

    return version;
}


int gladLoadGLES2( GLADloadfunc load) {
    return gladLoadGLES2UserPtr( glad_gl_get_proc_from_userptr, GLAD_GNUC_EXTENSION (void*) load);
}



 


#ifdef __cplusplus
}
#endif

#endif /*LV_USE_EGL*/
