1 //========================================================================
2 // GLFW 3.3 WGL - www.glfw.org
3 //------------------------------------------------------------------------
4 // Copyright (c) 2002-2006 Marcus Geelnard
5 // Copyright (c) 2006-2016 Camilla Löwy <elmindreda@glfw.org>
6 //
7 // This software is provided 'as-is', without any express or implied
8 // warranty. In no event will the authors be held liable for any damages
9 // arising from the use of this software.
10 //
11 // Permission is granted to anyone to use this software for any purpose,
12 // including commercial applications, and to alter it and redistribute it
13 // freely, subject to the following restrictions:
14 //
15 // 1. The origin of this software must not be misrepresented; you must not
16 //    claim that you wrote the original software. If you use this software
17 //    in a product, an acknowledgment in the product documentation would
18 //    be appreciated but is not required.
19 //
20 // 2. Altered source versions must be plainly marked as such, and must not
21 //    be misrepresented as being the original software.
22 //
23 // 3. This notice may not be removed or altered from any source
24 //    distribution.
25 //
26 //========================================================================
27 
28 #define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
29 #define WGL_SUPPORT_OPENGL_ARB 0x2010
30 #define WGL_DRAW_TO_WINDOW_ARB 0x2001
31 #define WGL_PIXEL_TYPE_ARB 0x2013
32 #define WGL_TYPE_RGBA_ARB 0x202b
33 #define WGL_ACCELERATION_ARB 0x2003
34 #define WGL_NO_ACCELERATION_ARB 0x2025
35 #define WGL_RED_BITS_ARB 0x2015
36 #define WGL_RED_SHIFT_ARB 0x2016
37 #define WGL_GREEN_BITS_ARB 0x2017
38 #define WGL_GREEN_SHIFT_ARB 0x2018
39 #define WGL_BLUE_BITS_ARB 0x2019
40 #define WGL_BLUE_SHIFT_ARB 0x201a
41 #define WGL_ALPHA_BITS_ARB 0x201b
42 #define WGL_ALPHA_SHIFT_ARB 0x201c
43 #define WGL_ACCUM_BITS_ARB 0x201d
44 #define WGL_ACCUM_RED_BITS_ARB 0x201e
45 #define WGL_ACCUM_GREEN_BITS_ARB 0x201f
46 #define WGL_ACCUM_BLUE_BITS_ARB 0x2020
47 #define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
48 #define WGL_DEPTH_BITS_ARB 0x2022
49 #define WGL_STENCIL_BITS_ARB 0x2023
50 #define WGL_AUX_BUFFERS_ARB 0x2024
51 #define WGL_STEREO_ARB 0x2012
52 #define WGL_DOUBLE_BUFFER_ARB 0x2011
53 #define WGL_SAMPLES_ARB 0x2042
54 #define WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB 0x20a9
55 #define WGL_CONTEXT_DEBUG_BIT_ARB 0x00000001
56 #define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x00000002
57 #define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
58 #define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001
59 #define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002
60 #define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
61 #define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
62 #define WGL_CONTEXT_FLAGS_ARB 0x2094
63 #define WGL_CONTEXT_ES2_PROFILE_BIT_EXT 0x00000004
64 #define WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB 0x00000004
65 #define WGL_LOSE_CONTEXT_ON_RESET_ARB 0x8252
66 #define WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB 0x8256
67 #define WGL_NO_RESET_NOTIFICATION_ARB 0x8261
68 #define WGL_CONTEXT_RELEASE_BEHAVIOR_ARB 0x2097
69 #define WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB 0
70 #define WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB 0x2098
71 #define WGL_CONTEXT_OPENGL_NO_ERROR_ARB 0x31b3
72 #define WGL_COLORSPACE_EXT 0x309d
73 #define WGL_COLORSPACE_SRGB_EXT 0x3089
74 
75 #define ERROR_INVALID_VERSION_ARB 0x2095
76 #define ERROR_INVALID_PROFILE_ARB 0x2096
77 #define ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB 0x2054
78 
79 typedef BOOL (WINAPI * PFNWGLSWAPINTERVALEXTPROC)(int);
80 typedef BOOL (WINAPI * PFNWGLGETPIXELFORMATATTRIBIVARBPROC)(HDC,int,int,UINT,const int*,int*);
81 typedef const char* (WINAPI * PFNWGLGETEXTENSIONSSTRINGEXTPROC)(void);
82 typedef const char* (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC)(HDC);
83 typedef HGLRC (WINAPI * PFNWGLCREATECONTEXTATTRIBSARBPROC)(HDC,HGLRC,const int*);
84 
85 typedef HGLRC (WINAPI * PFN_wglCreateContext)(HDC);
86 typedef BOOL (WINAPI * PFN_wglDeleteContext)(HGLRC);
87 typedef PROC (WINAPI * PFN_wglGetProcAddress)(LPCSTR);
88 typedef HDC (WINAPI * PFN_wglGetCurrentDC)(void);
89 typedef HGLRC (WINAPI * PFN_wglGetCurrentContext)(void);
90 typedef BOOL (WINAPI * PFN_wglMakeCurrent)(HDC,HGLRC);
91 typedef BOOL (WINAPI * PFN_wglShareLists)(HGLRC,HGLRC);
92 
93 // opengl32.dll function pointer typedefs
94 #define wglCreateContext _glfw.wgl.CreateContext
95 #define wglDeleteContext _glfw.wgl.DeleteContext
96 #define wglGetProcAddress _glfw.wgl.GetProcAddress
97 #define wglGetCurrentDC _glfw.wgl.GetCurrentDC
98 #define wglGetCurrentContext _glfw.wgl.GetCurrentContext
99 #define wglMakeCurrent _glfw.wgl.MakeCurrent
100 #define wglShareLists _glfw.wgl.ShareLists
101 
102 #define _GLFW_RECREATION_NOT_NEEDED 0
103 #define _GLFW_RECREATION_REQUIRED   1
104 #define _GLFW_RECREATION_IMPOSSIBLE 2
105 
106 #define _GLFW_PLATFORM_CONTEXT_STATE            _GLFWcontextWGL wgl
107 #define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE    _GLFWlibraryWGL wgl
108 
109 
110 // WGL-specific per-context data
111 //
112 typedef struct _GLFWcontextWGL
113 {
114     HDC       dc;
115     HGLRC     handle;
116     int       interval;
117 
118 } _GLFWcontextWGL;
119 
120 // WGL-specific global data
121 //
122 typedef struct _GLFWlibraryWGL
123 {
124     HINSTANCE                           instance;
125     PFN_wglCreateContext                CreateContext;
126     PFN_wglDeleteContext                DeleteContext;
127     PFN_wglGetProcAddress               GetProcAddress;
128     PFN_wglGetCurrentDC                 GetCurrentDC;
129     PFN_wglGetCurrentContext            GetCurrentContext;
130     PFN_wglMakeCurrent                  MakeCurrent;
131     PFN_wglShareLists                   ShareLists;
132 
133     PFNWGLSWAPINTERVALEXTPROC           SwapIntervalEXT;
134     PFNWGLGETPIXELFORMATATTRIBIVARBPROC GetPixelFormatAttribivARB;
135     PFNWGLGETEXTENSIONSSTRINGEXTPROC    GetExtensionsStringEXT;
136     PFNWGLGETEXTENSIONSSTRINGARBPROC    GetExtensionsStringARB;
137     PFNWGLCREATECONTEXTATTRIBSARBPROC   CreateContextAttribsARB;
138     GLFWbool                            EXT_swap_control;
139     GLFWbool                            EXT_colorspace;
140     GLFWbool                            ARB_multisample;
141     GLFWbool                            ARB_framebuffer_sRGB;
142     GLFWbool                            EXT_framebuffer_sRGB;
143     GLFWbool                            ARB_pixel_format;
144     GLFWbool                            ARB_create_context;
145     GLFWbool                            ARB_create_context_profile;
146     GLFWbool                            EXT_create_context_es2_profile;
147     GLFWbool                            ARB_create_context_robustness;
148     GLFWbool                            ARB_create_context_no_error;
149     GLFWbool                            ARB_context_flush_control;
150 
151 } _GLFWlibraryWGL;
152 
153 
154 GLFWbool _glfwInitWGL(void);
155 void _glfwTerminateWGL(void);
156 GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
157                                const _GLFWctxconfig* ctxconfig,
158                                const _GLFWfbconfig* fbconfig);
159 
160