/*
 * Copyright (C) 2018 Tomasz Kramkowski <tk@the-tk.com>
 * SPDX-License-Identifier: MIT
 */
#ifndef GL_H
#define GL_H

#include <stdint.h>
#include <stddef.h>

typedef uint8_t GLboolean;
typedef int8_t GLbyte;
typedef uint8_t GLubyte;
typedef char GLchar;
typedef int16_t GLshort;
typedef uint16_t GLushort;
typedef int32_t GLint;
typedef uint32_t GLuint;
typedef int32_t GLfixed;
typedef int64_t GLint64;
typedef uint64_t GLuint64;
typedef int32_t GLsizei;
typedef int32_t GLenum;
typedef ptrdiff_t GLintptr;
typedef ptrdiff_t GLsizeiptr;
typedef struct gl_sync *GLsync;
typedef uint32_t GLbitfield;
typedef uint16_t GLhalf;
typedef float GLfloat;
typedef float GLclampf;
typedef double GLdouble;
typedef double GLclampd;

enum {
	GL_DEPTH_BUFFER_BIT = 0x100,
	GL_COLOR_BUFFER_BIT = 0x4000,
};

enum {
	GL_NO_ERROR = 0,
	GL_FALSE = 0,
	GL_TRUE = 1,
	GL_TRIANGLES = 0x0004,
	GL_FRONT_AND_BACK = 0x0408,
	GL_INVALID_ENUM = 0x0500,
	GL_INVALID_VALUE,
	GL_INVALID_OPERATION,
	GL_STACK_OVERFLOW,
	GL_STACK_UNDERFLOW,
	GL_OUT_OF_MEMORY,
	GL_INVALID_FRAMEBUFFER_OPERATION,
	GL_CONTEXT_LOST,
	GL_CULL_FACE = 0x0b44,
	GL_DEPTH_TEST = 0x0b71,
	GL_TEXTURE_2D = 0x0de1,
	GL_UNSIGNED_BYTE = 0x1401,
	GL_UNSIGNED_INT = 0x1405,
	GL_FLOAT = 0x1406,
	GL_RGB = 0x1907,
	GL_LINE = 0x1B01,
	GL_NEAREST = 0x2600,
	GL_LINEAR,
	GL_NEAREST_MIPMAP_NEAREST = 0x2700,
	GL_LINEAR_MIPMAP_NEAREST,
	GL_NEAREST_MIPMAP_LINEAR,
	GL_LINEAR_MIPMAP_LINEAR,
	GL_TEXTURE_MAG_FILTER = 0x2800,
	GL_TEXTURE_MIN_FILTER,
	GL_TEXTURE_WRAP_S,
	GL_TEXTURE_WRAP_T,
	GL_CLAMP = 0x2900,
	GL_REPEAT,
	GL_TEXTURE0 = 0x84c0,
	GL_ARRAY_BUFFER = 0x8892,
	GL_ELEMENT_ARRAY_BUFFER = 0x8893,
	GL_STREAM_DRAW = 0x88e0,
	GL_STATIC_DRAW = 0x88e4,
	GL_DYNAMIC_DRAW = 0x88e8,
	GL_FRAGMENT_SHADER = 0x8b30,
	GL_VERTEX_SHADER = 0x8b31,
	GL_COMPILE_STATUS = 0x8b81,
	GL_LINK_STATUS = 0x8b82,
	GL_FRAMEBUFFER_SRGB = 0x8db9,
};

typedef void *gl_loadfunc(const char *name);
void gl_load(gl_loadfunc *load);
const char *gl_strerror(GLenum error);

#define _GL_FUNC(rtype, name, type, ...)	\
	typedef rtype type(__VA_ARGS__);	\
	extern type *name;
#define GL_FUNC(glname, rtype, name, ...) _GL_FUNC(rtype, name, name##_func, __VA_ARGS__)
#include "glfunc.h"
#undef GL_FUNC
#undef _GL_FUNC

#endif // GL_H