/* -LICENSE-START-
 ** Copyright (c) 2012 Blackmagic Design
 **  
 ** Permission is hereby granted, free of charge, to any person or organization 
 ** obtaining a copy of the software and accompanying documentation (the 
 ** "Software") to use, reproduce, display, distribute, sub-license, execute, 
 ** and transmit the Software, and to prepare derivative works of the Software, 
 ** and to permit third-parties to whom the Software is furnished to do so, in 
 ** accordance with:
 ** 
 ** (1) if the Software is obtained from Blackmagic Design, the End User License 
 ** Agreement for the Software Development Kit ("EULA") available at 
 ** https://www.blackmagicdesign.com/EULA/DeckLinkSDK; or
 ** 
 ** (2) if the Software is obtained from any third party, such licensing terms 
 ** as notified by that third party,
 ** 
 ** and all subject to the following:
 ** 
 ** (3) the copyright notices in the Software and this entire statement, 
 ** including the above license grant, this restriction and the following 
 ** disclaimer, must be included in all copies of the Software, in whole or in 
 ** part, and all derivative works of the Software, unless such copies or 
 ** derivative works are solely in the form of machine-executable object code 
 ** generated by a source language processor.
 ** 
 ** (4) 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, TITLE AND NON-INFRINGEMENT. IN NO EVENT 
 ** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 
 ** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, 
 ** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 ** DEALINGS IN THE SOFTWARE.
 ** 
 ** A copy of the Software is available free of charge at 
 ** https://www.blackmagicdesign.com/desktopvideo_sdk under the EULA.
 ** 
 ** -LICENSE-END-
 */
//
//  GLExtensions.h
//  LoopThroughWithOpenGLCompositing
//

#ifndef __GLEXTENSIONS_H__
#define __GLEXTENSIONS_H__

#include <windows.h>
#include <gl/gl.h>

#ifndef APIENTRYP
#define APIENTRYP APIENTRY *
#endif

#define GL_BGRA									0x80E1
#define GL_UNSIGNED_INT_8_8_8_8_REV				0x8367
#define GL_STREAM_DRAW							0x88E0
#define GL_STREAM_READ							0x88E1
#define GL_STREAM_COPY							0x88E2
#define GL_DYNAMIC_DRAW							0x88E8
#define GL_UNIFORM_BUFFER						0x8A11
#define GL_RGBA8								0x8058
#define GL_RGBA16F								0x881A
#define GL_TEXTURE0								0x84C0
#define GL_ACTIVE_TEXTURE						0x84E0
#define GL_ARRAY_BUFFER							0x8892
#define GL_PIXEL_PACK_BUFFER					0x88EB
#define GL_PIXEL_UNPACK_BUFFER					0x88EC
#define GL_PIXEL_UNPACK_BUFFER_BINDING			0x88EF
#define GL_FRAGMENT_SHADER						0x8B30
#define GL_VERTEX_SHADER						0x8B31
#define GL_COMPILE_STATUS						0x8B81
#define GL_LINK_STATUS							0x8B82
#define GL_INVALID_INDEX						0xFFFFFFFFu
#define GL_MAX_TEXTURE_IMAGE_UNITS				0x8872
#define GL_RENDERBUFFER_EXT						0x8D41
#define GL_FRAMEBUFFER_EXT						0x8D40
#define GL_FRAMEBUFFER_COMPLETE_EXT				0x8CD5
#define GL_COLOR_ATTACHMENT0_EXT				0x8CE0
#define GL_READ_FRAMEBUFFER						0x8CA8
#define GL_DRAW_FRAMEBUFFER						0x8CA9
#define GL_RENDERBUFFER							0x8D41
#define GL_FRAMEBUFFER							0x8D40
#define GL_FRAMEBUFFER_COMPLETE					0x8CD5
#define GL_COLOR_ATTACHMENT0					0x8CE0
#define GL_DEPTH_COMPONENT24					0x81A6
#define GL_CLAMP_TO_EDGE						0x812F
#define GL_DEPTH_ATTACHMENT_EXT					0x8D00
#define GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD	0x9160
#define GL_SYNC_GPU_COMMANDS_COMPLETE			0x9117
#define GL_SYNC_FLUSH_COMMANDS_BIT				0x00000001

typedef struct __GLsync *GLsync;
typedef unsigned __int64 GLuint64;
typedef ptrdiff_t GLintptr;
typedef ptrdiff_t GLsizeiptr;
typedef char GLchar;

typedef void (APIENTRYP PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
typedef void (APIENTRYP PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers);
typedef void (APIENTRYP PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
typedef void (APIENTRYP PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const GLvoid *data, GLenum usage);
typedef void (APIENTRYP PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
typedef void (APIENTRYP PFNGLCOMPILESHADERPROC) (GLuint shader);
typedef GLuint (APIENTRYP PFNGLCREATEPROGRAMPROC) (void);
typedef GLuint (APIENTRYP PFNGLCREATESHADERPROC) (GLenum type);
typedef void (APIENTRYP PFNGLDELETESHADERPROC) (GLuint shader);
typedef void (APIENTRYP PFNGLDELETEPROGRAMPROC) (GLuint program);
typedef void (APIENTRYP PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params);
typedef void (APIENTRYP PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
typedef void (APIENTRYP PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
typedef void (APIENTRYP PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
typedef GLint (APIENTRYP PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const GLchar *name);
typedef void (APIENTRYP PFNGLLINKPROGRAMPROC) (GLuint program);
typedef void (APIENTRYP PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const GLchar* *string, const GLint *length);
typedef void (APIENTRYP PFNGLUSEPROGRAMPROC) (GLuint program);
typedef void (APIENTRYP PFNGLUNIFORM1FPROC) (GLint location, GLfloat v0);
typedef void (APIENTRYP PFNGLUNIFORM1IPROC) (GLint location, GLint v0);
typedef void (APIENTRYP PFNGLUNIFORM2FPROC) (GLint location, GLfloat v0, GLfloat v1);
typedef void (APIENTRYP PFNGLUNIFORM4FPROC) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
typedef GLuint (APIENTRYP PFNGLGETUNIFORMBLOCKINDEXPROC) (GLuint program, const GLchar* uniformBlockName);
typedef void (APIENTRYP PFNGLUNIFORMBLOCKBINDINGPROC) (GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);
typedef void (APIENTRYP PFNGLACTIVETEXTUREPROC) (GLenum texture);
typedef void (APIENTRYP PFNGLBINDBUFFERBASEPROC) (GLenum target, GLuint index, GLuint buffer);
typedef void (APIENTRYP PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data);
typedef void (APIENTRYP PFNGLBINDVERTEXARRAYPROC) (GLuint array);
typedef void (APIENTRYP PFNGLDELETEVERTEXARRAYSPROC) (GLsizei n, const GLuint* arrays);
typedef void (APIENTRYP PFNGLGENVERTEXARRAYSPROC) (GLsizei n, GLuint* arrays);
typedef GLsync (APIENTRYP PFNGLFENCESYNCPROC) (GLenum condition, GLbitfield flags);
typedef void (APIENTRYP PFNGLDELETESYNCPROC) (GLsync sync);
typedef GLenum (APIENTRYP PFNGLCLIENTWAITSYNCPROC) (GLsync sync, GLbitfield flags, GLuint64 timeout);
typedef void (APIENTRYP PFNGLBINDRENDERBUFFERPROC) (GLenum target, GLuint renderbuffer);
typedef void (APIENTRYP PFNGLDELETERENDERBUFFERSPROC) (GLsizei n, const GLuint *renderbuffers);
typedef void (APIENTRYP PFNGLGENRENDERBUFFERSPROC) (GLsizei n, GLuint *renderbuffers);
typedef void (APIENTRYP PFNGLRENDERBUFFERSTORAGEPROC) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
typedef void (APIENTRYP PFNGLBINDFRAMEBUFFERPROC) (GLenum target, GLuint framebuffer);
typedef void (APIENTRYP PFNGLDELETEFRAMEBUFFERSPROC) (GLsizei n, const GLuint *framebuffers);
typedef void (APIENTRYP PFNGLGENFRAMEBUFFERSPROC) (GLsizei n, GLuint *framebuffers);
typedef GLenum (APIENTRYP PFNGLCHECKFRAMEBUFFERSTATUSPROC) (GLenum target);
typedef void (APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
typedef void (APIENTRYP PFNGLFRAMEBUFFERRENDERBUFFERPROC) (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
typedef void (APIENTRYP PFNGLBLITFRAMEBUFFERPROC) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);

extern PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
extern PFNGLGENRENDERBUFFERSPROC glGenRenderbuffers;
extern PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer;
extern PFNGLRENDERBUFFERSTORAGEPROC glRenderbufferStorage;
extern PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers;
extern PFNGLDELETERENDERBUFFERSPROC glDeleteRenderbuffers;
extern PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
extern PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D;
extern PFNGLFRAMEBUFFERRENDERBUFFERPROC glFramebufferRenderbuffer;
extern PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus;
extern PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer;
extern PFNGLFENCESYNCPROC glFenceSync;
extern PFNGLCLIENTWAITSYNCPROC glClientWaitSync;
extern PFNGLDELETESYNCPROC glDeleteSync;
extern PFNGLGENBUFFERSPROC glGenBuffers;
extern PFNGLDELETEBUFFERSPROC glDeleteBuffers;
extern PFNGLBINDBUFFERPROC glBindBuffer;
extern PFNGLBUFFERDATAPROC glBufferData;
extern PFNGLBUFFERSUBDATAPROC glBufferSubData;
extern PFNGLBINDBUFFERBASEPROC glBindBufferBase;
extern PFNGLACTIVETEXTUREPROC glActiveTexture;
extern PFNGLGENVERTEXARRAYSPROC glGenVertexArrays;
extern PFNGLDELETEVERTEXARRAYSPROC glDeleteVertexArrays;
extern PFNGLBINDVERTEXARRAYPROC glBindVertexArray;
extern PFNGLCREATESHADERPROC glCreateShader;
extern PFNGLDELETESHADERPROC glDeleteShader;
extern PFNGLDELETEPROGRAMPROC glDeleteProgram;
extern PFNGLSHADERSOURCEPROC glShaderSource;
extern PFNGLCOMPILESHADERPROC glCompileShader;
extern PFNGLGETSHADERIVPROC glGetShaderiv;
extern PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
extern PFNGLCREATEPROGRAMPROC glCreateProgram;
extern PFNGLATTACHSHADERPROC glAttachShader;
extern PFNGLLINKPROGRAMPROC glLinkProgram;
extern PFNGLGETPROGRAMIVPROC glGetProgramiv;
extern PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
extern PFNGLUSEPROGRAMPROC glUseProgram;
extern PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
extern PFNGLGETUNIFORMBLOCKINDEXPROC glGetUniformBlockIndex;
extern PFNGLUNIFORMBLOCKBINDINGPROC glUniformBlockBinding;
extern PFNGLUNIFORM1IPROC glUniform1i;
extern PFNGLUNIFORM1FPROC glUniform1f;
extern PFNGLUNIFORM2FPROC glUniform2f;
extern PFNGLUNIFORM4FPROC glUniform4f;

bool ResolveGLExtensions();

#endif // __GLEXTENSIONS_H__