/*
 * Cogl
 *
 * A Low Level GPU Graphics and Utilities API
 *
 * Copyright (C) 2009, 2011 Intel Corporation.
 * Copyright (C) 2019 DisplayLink (UK) Ltd.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 *
 */

/* This is included multiple times with different definitions for
 * these macros. The macros are given the following arguments:
 *
 * COGL_EXT_BEGIN:
 *
 * @name: a unique symbol name for this feature
 *
 * @min_gl_major: the major part of the minimum GL version where these
 * functions are available in core, or 255 if it isn't available in
 * any version.
 * @min_gl_minor: the minor part of the minimum GL version where these
 * functions are available in core, or 255 if it isn't available in
 * any version.
 *
 * @gles_availability: flags to specify which versions of GLES the
 * functions are available in. Should be a combination of
 * COGL_EXT_IN_GLES and COGL_EXT_IN_GLES2.
 *
 * @extension_suffixes: A zero-separated list of suffixes in a
 * string. These are appended to the extension name to get a complete
 * extension name to try. The suffix is also appended to all of the
 * function names. The suffix can optionally include a ':' to specify
 * an alternate suffix for the function names.
 *
 * @extension_names: A list of extension names to try. If any of these
 * extensions match then it will be used.
 */

/* The functions in this file are part of the core GL,GLES1 and GLES2 apis */
#include "cogl-core-functions.h"

/* The functions in this file are core to GLES2 only but
 * may be extensions for GLES1 and GL */
#include "cogl-in-gles2-core-functions.h"

/* The functions in this file are core to GLES1 and GLES2 but not core
 * to GL but they may be extensions available for GL */
#include "cogl-in-gles-core-functions.h"

/* These are GLSL shader APIs core to GL 2.0 and GLES2 */
#include "cogl-glsl-functions.h"

/* These are the core GL functions which are only available in big
   GL */
COGL_EXT_BEGIN (only_in_big_gl,
                0, 0,
                0, /* not in GLES */
                "\0",
                "\0")
COGL_EXT_FUNCTION (void, glGetTexLevelParameteriv,
                   (GLenum target, GLint level,
                    GLenum pname, GLint *params))
COGL_EXT_FUNCTION (void, glGetTexImage,
                   (GLenum target, GLint level,
                    GLenum format, GLenum type,
                    GLvoid *pixels))
COGL_EXT_FUNCTION (void, glDepthRange,
                   (double near_val, double far_val))
COGL_EXT_FUNCTION (void, glDrawBuffer,
                   (GLenum mode))
COGL_EXT_END ()


/* GLES doesn't support mapping buffers in core so this has to be a
   separate check */
COGL_EXT_BEGIN (map_vbos, 1, 5,
                0, /* not in GLES core */
                "ARB\0OES\0",
                "vertex_buffer_object\0mapbuffer\0")
COGL_EXT_FUNCTION (void *, glMapBuffer,
                   (GLenum		 target,
                    GLenum		 access))
COGL_EXT_FUNCTION (GLboolean, glUnmapBuffer,
                   (GLenum		 target))
COGL_EXT_END ()


COGL_EXT_BEGIN (offscreen_blit, 3, 0,
                COGL_EXT_IN_GLES3,
                "EXT\0NV\0",
                "framebuffer_blit\0")
COGL_EXT_FUNCTION (void, glBlitFramebuffer,
                   (GLint                 srcX0,
                    GLint                 srcY0,
                    GLint                 srcX1,
                    GLint                 srcY1,
                    GLint                 dstX0,
                    GLint                 dstY0,
                    GLint                 dstX1,
                    GLint                 dstY1,
                    GLbitfield            mask,
                    GLenum                filter))
COGL_EXT_END ()

COGL_EXT_BEGIN (EGL_image, 255, 255,
                0, /* not in either GLES */
                "OES\0",
                "EGL_image\0")
COGL_EXT_FUNCTION (void, glEGLImageTargetTexture2D,
                   (GLenum           target,
                    GLeglImageOES    image))
COGL_EXT_END ()

COGL_EXT_BEGIN (framebuffer_discard, 255, 255,
                0, /* not in either GLES */
                "EXT\0",
                "framebuffer_discard\0")
COGL_EXT_FUNCTION (void, glDiscardFramebuffer,
                   (GLenum           target,
                    GLsizei          numAttachments,
                    const GLenum    *attachments))
COGL_EXT_END ()

COGL_EXT_BEGIN (IMG_multisampled_render_to_texture, 255, 255,
                0, /* not in either GLES */
                "\0",
                "IMG_multisampled_render_to_texture\0")
COGL_EXT_FUNCTION (void, glRenderbufferStorageMultisampleIMG,
                   (GLenum           target,
                    GLsizei          samples,
                    GLenum           internal_format,
                    GLsizei          width,
                    GLsizei          height))
COGL_EXT_FUNCTION (void, glFramebufferTexture2DMultisampleIMG,
                   (GLenum           target,
                    GLenum           attachment,
                    GLenum           textarget,
                    GLuint           texture,
                    GLint            level,
                    GLsizei          samples))
COGL_EXT_END ()

COGL_EXT_BEGIN (ARB_sampler_objects, 3, 3,
                0, /* not in either GLES */
                "ARB:\0",
                "sampler_objects\0")
COGL_EXT_FUNCTION (void, glGenSamplers,
                   (GLsizei count,
                    GLuint *samplers))
COGL_EXT_FUNCTION (void, glDeleteSamplers,
                   (GLsizei count,
                    const GLuint *samplers))
COGL_EXT_FUNCTION (void, glBindSampler,
                   (GLuint unit,
                    GLuint sampler))
COGL_EXT_FUNCTION (void, glSamplerParameteri,
                   (GLuint sampler,
                    GLenum pname,
                    GLint param))
COGL_EXT_END ()

COGL_EXT_BEGIN (only_gl3, 3, 0,
                0, /* not in either GLES */
                "\0",
                "\0")
COGL_EXT_FUNCTION (const GLubyte *, glGetStringi,
                   (GLenum name, GLuint index))
COGL_EXT_END ()

COGL_EXT_BEGIN (vertex_array_object, 3, 0,
                0, /* not in either GLES */
                "ARB\0OES\0",
                "vertex_array_object\0")
COGL_EXT_FUNCTION (void, glBindVertexArray,
                   (GLuint array))
COGL_EXT_FUNCTION (void, glGenVertexArrays,
                   (GLsizei n,
                    GLuint *arrays))
COGL_EXT_END ()

COGL_EXT_BEGIN (map_region, 3, 0,
                COGL_EXT_IN_GLES3,
                "ARB:\0",
                "map_buffer_range\0")
COGL_EXT_FUNCTION (GLvoid *, glMapBufferRange,
                   (GLenum target,
                    GLintptr offset,
                    GLsizeiptr length,
                    GLbitfield access))
COGL_EXT_END ()

#ifdef GL_ARB_sync
COGL_EXT_BEGIN (sync, 3, 2,
                0, /* not in either GLES */
                "ARB:\0",
                "sync\0")
COGL_EXT_FUNCTION (GLsync, glFenceSync,
                   (GLenum condition, GLbitfield flags))
COGL_EXT_FUNCTION (GLenum, glClientWaitSync,
                   (GLsync sync, GLbitfield flags, GLuint64 timeout))
COGL_EXT_FUNCTION (void, glDeleteSync,
                   (GLsync sync))
COGL_EXT_END ()
#endif

COGL_EXT_BEGIN (draw_buffers, 2, 0,
                COGL_EXT_IN_GLES3,
                "ARB\0EXT\0",
                "draw_buffers\0")
COGL_EXT_FUNCTION (void, glDrawBuffers,
                   (GLsizei n, const GLenum *bufs))
COGL_EXT_END ()

COGL_EXT_BEGIN (robustness, 255, 255,
                0,
                "ARB\0",
                "robustness\0")
COGL_EXT_FUNCTION (GLenum, glGetGraphicsResetStatus,
                   (void))
COGL_EXT_END ()

COGL_EXT_BEGIN (multitexture_part1, 1, 3,
                0,
                "ARB\0",
                "multitexture\0")
COGL_EXT_FUNCTION (void, glClientActiveTexture,
                   (GLenum                texture))
COGL_EXT_END ()
