GL_ARB_ES2_compatibility http://www.opengl.org/registry/specs/ARB/ES2_compatibility.txt GL_ARB_ES2_compatibility GL_FIXED 0x140C GL_IMPLEMENTATION_COLOR_READ_TYPE 0x8B9A GL_IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B GL_RGB565 0x8D62 GL_LOW_FLOAT 0x8DF0 GL_MEDIUM_FLOAT 0x8DF1 GL_HIGH_FLOAT 0x8DF2 GL_LOW_INT 0x8DF3 GL_MEDIUM_INT 0x8DF4 GL_HIGH_INT 0x8DF5 GL_SHADER_BINARY_FORMATS 0x8DF8 GL_NUM_SHADER_BINARY_FORMATS 0x8DF9 GL_SHADER_COMPILER 0x8DFA GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB GL_MAX_VARYING_VECTORS 0x8DFC GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD void glClearDepthf (GLclampf d) void glDepthRangef (GLclampf n, GLclampf f) void glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint *precision) void glReleaseShaderCompiler (void) void glShaderBinary (GLsizei count, const GLuint* shaders, GLenum binaryformat, const GLvoid*binary, GLsizei length)