/*

 * GStreamer

 * Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

/*

 * Cogl

 *

 * An object oriented GL/GLES Abstraction/Utility Layer

 *

 * Copyright (C) 2009, 2011 Intel Corporation.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library. If not, see <http://www.gnu.org/licenses/>.

 */

/* These are the core GL functions which we assume will always be

   available */

GST_GL_EXT_BEGIN (core,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3 |

                  GST_GL_API_GLES1 | GST_GL_API_GLES2,

                  1, 0,

                  1, 0,

                  "\0",

                  "\0")

GST_GL_EXT_FUNCTION (void, BindTexture,

                     (GLenum target, GLuint texture))

GST_GL_EXT_FUNCTION (void, BlendFunc,

                     (GLenum sfactor, GLenum dfactor))

GST_GL_EXT_FUNCTION (void, Clear,

                     (GLbitfield mask))

GST_GL_EXT_FUNCTION (void, ClearColor,

                     (GLclampf red,

                      GLclampf green,

                      GLclampf blue,

                      GLclampf alpha))

GST_GL_EXT_FUNCTION (void, ClearStencil,

                     (GLint s))

GST_GL_EXT_FUNCTION (void, ColorMask,

                     (GLboolean red,

                      GLboolean green,

                      GLboolean blue,

                      GLboolean alpha))

GST_GL_EXT_FUNCTION (void, CopyTexSubImage2D,

                     (GLenum target,

                      GLint level,

                      GLint xoffset,

                      GLint yoffset,

                      GLint x,

                      GLint y,

                      GLsizei width,

                      GLsizei height))

GST_GL_EXT_FUNCTION (void, DeleteTextures,

                     (GLsizei n, const GLuint* textures))

GST_GL_EXT_FUNCTION (void, DepthFunc,

                     (GLenum func))

GST_GL_EXT_FUNCTION (void, DepthMask,

                     (GLboolean flag))

GST_GL_EXT_FUNCTION (void, Disable,

                     (GLenum cap))

GST_GL_EXT_FUNCTION (void, DrawArrays,

                     (GLenum mode, GLint first, GLsizei count))

GST_GL_EXT_FUNCTION (void, DrawElements,

                     (GLenum mode,

                      GLsizei count,

                      GLenum type,

                      const GLvoid* indices))

GST_GL_EXT_FUNCTION (void, Enable,

                     (GLenum cap))

GST_GL_EXT_FUNCTION (void, Finish,

                     (void))

GST_GL_EXT_FUNCTION (void, Flush,

                     (void))

GST_GL_EXT_FUNCTION (void, FrontFace,

                     (GLenum mode))

GST_GL_EXT_FUNCTION (void, CullFace,

                     (GLenum mode))

GST_GL_EXT_FUNCTION (void, GenTextures,

                     (GLsizei n, GLuint* textures))

GST_GL_EXT_FUNCTION (GLenum, GetError,

                     (void))

GST_GL_EXT_FUNCTION (void, GetIntegerv,

                     (GLenum pname, GLint* params))

GST_GL_EXT_FUNCTION (void, GetBooleanv,

                     (GLenum pname, GLboolean* params))

GST_GL_EXT_FUNCTION (void, GetFloatv,

                     (GLenum pname, GLfloat* params))

GST_GL_EXT_FUNCTION (const GLubyte*, GetString,

                     (GLenum name))

GST_GL_EXT_FUNCTION (void, Hint,

                     (GLenum target, GLenum mode))

GST_GL_EXT_FUNCTION (GLboolean, IsTexture,

                     (GLuint texture))

GST_GL_EXT_FUNCTION (void, PixelStorei,

                     (GLenum pname, GLint param))

GST_GL_EXT_FUNCTION (void, ReadPixels,

                     (GLint x,

                      GLint y,

                      GLsizei width,

                      GLsizei height,

                      GLenum format,

                      GLenum type,

                      GLvoid* pixels))

GST_GL_EXT_FUNCTION (void, Scissor,

                     (GLint x, GLint y, GLsizei width, GLsizei height))

GST_GL_EXT_FUNCTION (void, StencilFunc,

                     (GLenum func, GLint ref, GLuint mask))

GST_GL_EXT_FUNCTION (void, StencilMask,

                     (GLuint mask))

GST_GL_EXT_FUNCTION (void, StencilOp,

                     (GLenum fail, GLenum zfail, GLenum zpass))

GST_GL_EXT_FUNCTION (void, TexImage2D,

                     (GLenum target,

                      GLint level,

                      GLint internalformat,

                      GLsizei width,

                      GLsizei height,

                      GLint border,

                      GLenum format,

                      GLenum type,

                      const GLvoid* pixels))

GST_GL_EXT_FUNCTION (void, TexParameterfv,

                     (GLenum target, GLenum pname, const GLfloat* params))

GST_GL_EXT_FUNCTION (void, TexParameteri,

                     (GLenum target, GLenum pname, GLint param))

GST_GL_EXT_FUNCTION (void, TexParameteriv,

                     (GLenum target, GLenum pname, const GLint* params))

GST_GL_EXT_FUNCTION (void, GetTexParameterfv,

                     (GLenum target, GLenum pname, GLfloat* params))

GST_GL_EXT_FUNCTION (void, GetTexParameteriv,

                     (GLenum target, GLenum pname, GLint* params))

GST_GL_EXT_FUNCTION (void, TexSubImage2D,

                     (GLenum target,

                      GLint level,

                      GLint xoffset,

                      GLint yoffset,

                      GLsizei width,

                      GLsizei height,

                      GLenum format,

                      GLenum type,

                      const GLvoid* pixels))

GST_GL_EXT_FUNCTION (void, CopyTexImage2D,

                     (GLenum target,

                      GLint level,

                      GLenum internalformat,

                      GLint x,

                      GLint y,

                      GLsizei width,

                      GLsizei height,

                      GLint border))

GST_GL_EXT_FUNCTION (void, Viewport,

                     (GLint x, GLint y, GLsizei width, GLsizei height))

GST_GL_EXT_FUNCTION (GLboolean, IsEnabled, (GLenum cap))

GST_GL_EXT_FUNCTION (void, LineWidth, (GLfloat width))

GST_GL_EXT_FUNCTION (void, PolygonOffset, (GLfloat factor, GLfloat units))

GST_GL_EXT_FUNCTION (void, TexParameterf,

                     (GLenum target,

                      GLenum pname,

                      GLfloat param))

GST_GL_EXT_END ()

GST_GL_EXT_BEGIN (texture_3d,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3,

                  1, 2,

                  255, 255, /* not in either GLES */

                  "OES\0",

                  "texture_3D\0")

GST_GL_EXT_FUNCTION (void, TexImage3D,

                     (GLenum target, GLint level,

                      GLint internalFormat,

                      GLsizei width, GLsizei height,

                      GLsizei depth, GLint border,

                      GLenum format, GLenum type,

                      const GLvoid *pixels))

GST_GL_EXT_FUNCTION (void, TexSubImage3D,

                     (GLenum target, GLint level,

                      GLint xoffset, GLint yoffset,

                      GLint zoffset, GLsizei width,

                      GLsizei height, GLsizei depth,

                      GLenum format,

                      GLenum type, const GLvoid *pixels))

GST_GL_EXT_END ()

GST_GL_EXT_BEGIN (only_in_both_gles_and_gl_1_3,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3 |

                  GST_GL_API_GLES1 | GST_GL_API_GLES2,

                  1, 3,

                  1, 0,

                  "\0",

                  "\0")

GST_GL_EXT_FUNCTION (void, CompressedTexImage2D,

                     (GLenum target,

                      GLint level,

                      GLenum internalformat,

                      GLsizei width,

                      GLsizei height,

                      GLint border,

                      GLsizei imageSize,

                      const GLvoid* data))

GST_GL_EXT_FUNCTION (void, CompressedTexSubImage2D,

                     (GLenum target,

                      GLint level,

                      GLint xoffset,

                      GLint yoffset,

                      GLsizei width,

                      GLsizei height,

                      GLenum format,

                      GLsizei imageSize,

                      const GLvoid* data))

GST_GL_EXT_FUNCTION (void, SampleCoverage,

                     (GLclampf value, GLboolean invert))

GST_GL_EXT_END ()

GST_GL_EXT_BEGIN (only_in_both_gles_and_gl_1_5,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3 |

                  GST_GL_API_GLES1 | GST_GL_API_GLES2,

                  1, 5,

                  1, 0,

                  "\0",

                  "\0")

GST_GL_EXT_FUNCTION (void, GetBufferParameteriv,

                     (GLenum target, GLenum pname, GLint* params))

GST_GL_EXT_END ()

GST_GL_EXT_BEGIN (vbos,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3 |

                  GST_GL_API_GLES1 | GST_GL_API_GLES2,

                  1, 5,

                  1, 0,

                  "ARB\0",

                  "vertex_buffer_object\0")

GST_GL_EXT_FUNCTION (void, GenBuffers,

                     (GLsizei		 n,

                      GLuint		*buffers))

GST_GL_EXT_FUNCTION (void, BindBuffer,

                     (GLenum		 target,

                      GLuint		 buffer))

GST_GL_EXT_FUNCTION (void, BufferData,

                     (GLenum		 target,

                      GLsizeiptr		 size,

                      const GLvoid		*data,

                      GLenum		 usage))

GST_GL_EXT_FUNCTION (void, BufferSubData,

                     (GLenum		 target,

                      GLintptr		 offset,

                      GLsizeiptr		 size,

                      const GLvoid		*data))

GST_GL_EXT_FUNCTION (void, DeleteBuffers,

                     (GLsizei		 n,

                      const GLuint		*buffers))

GST_GL_EXT_FUNCTION (GLboolean, IsBuffer,

                     (GLuint               buffer))

GST_GL_EXT_END ()

/* Available in GL 1.3, the multitexture extension or GLES. These are

   required */

GST_GL_EXT_BEGIN (multitexture_part0,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3 |

                  GST_GL_API_GLES1 | GST_GL_API_GLES2,

                  1, 3,

                  1, 0,

                  "ARB\0",

                  "multitexture\0")

GST_GL_EXT_FUNCTION (void, ActiveTexture,

                   (GLenum                texture))

GST_GL_EXT_END ()

 /* GLES doesn't support mapping buffers in core so this has to be a

   separate check */

GST_GL_EXT_BEGIN (map_vbos, 

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3,

                  1, 5,

                  255, 255, /* not in GLES core */

                  "ARB\0OES\0",

                  "vertex_buffer_object\0mapbuffer\0")

GST_GL_EXT_FUNCTION (void *, MapBuffer,

                   (GLenum		 target,

                    GLenum		 access))

GST_GL_EXT_END ()

GST_GL_EXT_BEGIN (unmap_buffer,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2,

                  1, 5,

                  3, 0,

                  "ARB\0OES\0",

                  "vertex_buffer_object\0mapbuffer\0")

GST_GL_EXT_FUNCTION (GLboolean, UnmapBuffer,

                   (GLenum		 target))

GST_GL_EXT_END ()

GST_GL_EXT_BEGIN (gl3,

                  GST_GL_API_OPENGL | GST_GL_API_OPENGL3 |

                  GST_GL_API_GLES2,

                  3, 0,

                  3, 0,

                  "\0",

                  "\0")

GST_GL_EXT_FUNCTION (const GLubyte*, GetStringi,

                     (GLenum name, GLint index))

GST_GL_EXT_FUNCTION (void *, MapBufferRange,

                     (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access))

GST_GL_EXT_END ()