gl_bindings.h revision 424c4d7b64af9d0d8fd9624f381f469654d5e3d2 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef UI_GL_GL_BINDINGS_H_
6#define UI_GL_GL_BINDINGS_H_
7
8// Includes the platform independent and platform dependent GL headers.
9// Only include this in cc files. It pulls in system headers, including
10// the X11 headers on linux, which define all kinds of macros that are
11// liable to cause conflicts.
12
13#include <GL/gl.h>
14#include <GL/glext.h>
15#include <EGL/egl.h>
16#include <EGL/eglext.h>
17
18#include "base/logging.h"
19#include "base/threading/thread_local.h"
20#include "build/build_config.h"
21#include "ui/gl/gl_export.h"
22
23// The standard OpenGL native extension headers are also included.
24#if defined(OS_WIN)
25#include <GL/wglext.h>
26#elif defined(OS_MACOSX)
27#include <OpenGL/OpenGL.h>
28#elif defined(USE_X11)
29#include <GL/glx.h>
30#include <GL/glxext.h>
31
32// Undefine some macros defined by X headers. This is why this file should only
33// be included in .cc files.
34#undef Bool
35#undef None
36#undef Status
37#endif
38
39
40// GLES2 defines not part of Desktop GL
41// Shader Precision-Specified Types
42#define GL_LOW_FLOAT                                     0x8DF0
43#define GL_MEDIUM_FLOAT                                  0x8DF1
44#define GL_HIGH_FLOAT                                    0x8DF2
45#define GL_LOW_INT                                       0x8DF3
46#define GL_MEDIUM_INT                                    0x8DF4
47#define GL_HIGH_INT                                      0x8DF5
48#define GL_IMPLEMENTATION_COLOR_READ_TYPE                0x8B9A
49#define GL_IMPLEMENTATION_COLOR_READ_FORMAT              0x8B9B
50#define GL_MAX_FRAGMENT_UNIFORM_VECTORS                  0x8DFD
51#define GL_MAX_VERTEX_UNIFORM_VECTORS                    0x8DFB
52#define GL_MAX_VARYING_VECTORS                           0x8DFC
53#define GL_SHADER_BINARY_FORMATS                         0x8DF8
54#define GL_NUM_SHADER_BINARY_FORMATS                     0x8DF9
55#define GL_SHADER_COMPILER                               0x8DFA
56#define GL_RGB565                                        0x8D62
57#define GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES           0x8B8B
58#define GL_RGB8_OES                                      0x8051
59#define GL_RGBA8_OES                                     0x8058
60#define GL_HALF_FLOAT_OES                                0x8D61
61
62// GL_OES_EGL_image_external
63#define GL_TEXTURE_EXTERNAL_OES                          0x8D65
64#define GL_SAMPLER_EXTERNAL_OES                          0x8D66
65#define GL_TEXTURE_BINDING_EXTERNAL_OES                  0x8D67
66#define GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES              0x8D68
67
68// GL_ANGLE_translated_shader_source
69#define GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE         0x93A0
70
71// GL_CHROMIUM_flipy
72#define GL_UNPACK_FLIP_Y_CHROMIUM                        0x9240
73
74#define GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM             0x9241
75#define GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM           0x9242
76#define GL_UNPACK_COLORSPACE_CONVERSION_CHROMIUM         0x9243
77
78// GL_CHROMIUM_gpu_memory_manager
79#define GL_TEXTURE_POOL_CHROMIUM                         0x6000
80#define GL_TEXTURE_POOL_MANAGED_CHROMIUM                 0x6001
81#define GL_TEXTURE_POOL_UNMANAGED_CHROMIUM               0x6002
82
83// GL_ANGLE_pack_reverse_row_order
84#define GL_PACK_REVERSE_ROW_ORDER_ANGLE                  0x93A4
85
86// GL_ANGLE_texture_usage
87#define GL_TEXTURE_USAGE_ANGLE                           0x93A2
88#define GL_FRAMEBUFFER_ATTACHMENT_ANGLE                  0x93A3
89
90// GL_EXT_texture_storage
91#define GL_TEXTURE_IMMUTABLE_FORMAT_EXT                  0x912F
92#define GL_ALPHA8_EXT                                    0x803C
93#define GL_LUMINANCE8_EXT                                0x8040
94#define GL_LUMINANCE8_ALPHA8_EXT                         0x8045
95#define GL_RGBA32F_EXT                                   0x8814
96#define GL_RGB32F_EXT                                    0x8815
97#define GL_ALPHA32F_EXT                                  0x8816
98#define GL_LUMINANCE32F_EXT                              0x8818
99#define GL_LUMINANCE_ALPHA32F_EXT                        0x8819
100#define GL_RGBA16F_EXT                                   0x881A
101#define GL_RGB16F_EXT                                    0x881B
102#define GL_ALPHA16F_EXT                                  0x881C
103#define GL_LUMINANCE16F_EXT                              0x881E
104#define GL_LUMINANCE_ALPHA16F_EXT                        0x881F
105#define GL_BGRA8_EXT                                     0x93A1
106
107// GL_ANGLE_instanced_arrays
108#define GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE             0x88FE
109
110// GL_EXT_occlusion_query_boolean
111#define GL_ANY_SAMPLES_PASSED_EXT                        0x8C2F
112#define GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT           0x8D6A
113#define GL_CURRENT_QUERY_EXT                             0x8865
114#define GL_QUERY_RESULT_EXT                              0x8866
115#define GL_QUERY_RESULT_AVAILABLE_EXT                    0x8867
116
117// GL_CHROMIUM_command_buffer_query
118#define GL_COMMANDS_ISSUED_CHROMIUM                      0x84F2
119
120/* GL_CHROMIUM_get_error_query */
121#define GL_GET_ERROR_QUERY_CHROMIUM                      0x84F3
122
123/* GL_CHROMIUM_command_buffer_latency_query */
124#define GL_LATENCY_QUERY_CHROMIUM                        0x84F4
125
126/* GL_CHROMIUM_async_pixel_transfers */
127#define GL_ASYNC_PIXEL_UNPACK_COMPLETED_CHROMIUM         0x84F5
128#define GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM           0x84F6
129
130// GL_OES_texure_3D
131#define GL_SAMPLER_3D_OES                                0x8B5F
132
133// GL_OES_depth24
134#define GL_DEPTH_COMPONENT24_OES                         0x81A6
135
136// GL_OES_depth32
137#define GL_DEPTH_COMPONENT32_OES                         0x81A7
138
139// GL_OES_packed_depth_stencil
140#ifndef GL_DEPTH24_STENCIL8_OES
141#define GL_DEPTH24_STENCIL8_OES                          0x88F0
142#endif
143
144#ifndef GL_DEPTH24_STENCIL8
145#define GL_DEPTH24_STENCIL8                              0x88F0
146#endif
147
148// GL_OES_compressed_ETC1_RGB8_texture
149#define GL_ETC1_RGB8_OES                                 0x8D64
150
151// GL_OES_vertex_array_object
152#define GL_VERTEX_ARRAY_BINDING_OES                      0x85B5
153
154// GL_CHROMIUM_pixel_transfer_buffer_object
155#define GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM         0x78EC
156#define GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM           0x78ED
157#define GL_PIXEL_PACK_TRANSFER_BUFFER_BINDING_CHROMIUM   0x78EE
158#define GL_PIXEL_UNPACK_TRANSFER_BUFFER_BINDING_CHROMIUM 0x78EF
159
160/* GL_EXT_discard_framebuffer */
161#ifndef GL_EXT_discard_framebuffer
162#define GL_COLOR_EXT                                     0x1800
163#define GL_DEPTH_EXT                                     0x1801
164#define GL_STENCIL_EXT                                   0x1802
165#endif
166
167// GL_ARB_get_program_binary
168#define PROGRAM_BINARY_RETRIEVABLE_HINT                  0x8257
169// GL_OES_get_program_binary
170#define GL_PROGRAM_BINARY_LENGTH_OES                     0x8741
171#define GL_NUM_PROGRAM_BINARY_FORMATS_OES                0x87FE
172#define GL_PROGRAM_BINARY_FORMATS_OES                    0x87FF
173
174#ifndef GL_EXT_multisampled_render_to_texture
175#define GL_RENDERBUFFER_SAMPLES_EXT                      0x8CAB
176#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT        0x8D56
177#define GL_MAX_SAMPLES_EXT                               0x8D57
178#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SAMPLES_EXT    0x8D6C
179#endif
180
181#ifndef GL_IMG_multisampled_render_to_texture
182#define GL_RENDERBUFFER_SAMPLES_IMG                      0x9133
183#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_IMG        0x9134
184#define GL_MAX_SAMPLES_IMG                               0x9135
185#define GL_TEXTURE_SAMPLES_IMG                           0x9136
186#endif
187
188#define GL_GLEXT_PROTOTYPES 1
189
190#if defined(OS_WIN)
191#define GL_BINDING_CALL WINAPI
192#else
193#define GL_BINDING_CALL
194#endif
195
196#define GL_SERVICE_LOG(args) DLOG(INFO) << args;
197#if defined(NDEBUG)
198  #define GL_SERVICE_LOG_CODE_BLOCK(code)
199#else
200  #define GL_SERVICE_LOG_CODE_BLOCK(code) code
201#endif
202
203// Forward declare OSMesa types.
204typedef struct osmesa_context *OSMesaContext;
205typedef void (*OSMESAproc)();
206
207// Forward declare EGL types.
208typedef uint64 EGLuint64CHROMIUM;
209
210#include "gl_bindings_autogen_gl.h"
211#include "gl_bindings_autogen_osmesa.h"
212
213#if defined(OS_WIN)
214#include "gl_bindings_autogen_egl.h"
215#include "gl_bindings_autogen_wgl.h"
216#elif defined(USE_X11)
217#include "gl_bindings_autogen_egl.h"
218#include "gl_bindings_autogen_glx.h"
219#elif defined(USE_OZONE)
220#include "gl_bindings_autogen_egl.h"
221#elif defined(OS_ANDROID)
222#include "gl_bindings_autogen_egl.h"
223#endif
224
225namespace gfx {
226
227struct GL_EXPORT DriverGL {
228  void Initialize();
229  void InitializeExtensions(GLContext* context);
230  void InitializeDebugBindings();
231  void ClearBindings();
232  void UpdateDebugExtensionBindings();
233
234  ProcsGL fn;
235  ProcsGL orig_fn;
236  ProcsGL debug_fn;
237  ExtensionsGL ext;
238
239 private:
240  void InitializeBindings();
241  void InitializeExtensionBindings(GLContext* context);
242};
243
244struct GL_EXPORT DriverOSMESA {
245  void InitializeBindings();
246  void InitializeExtensionBindings(GLContext* context);
247  void InitializeDebugBindings();
248  void ClearBindings();
249  void UpdateDebugExtensionBindings();
250
251  ProcsOSMESA fn;
252  ProcsOSMESA debug_fn;
253  ExtensionsOSMESA ext;
254};
255
256#if defined(OS_WIN)
257struct GL_EXPORT DriverWGL {
258  void InitializeBindings();
259  void InitializeExtensionBindings(GLContext* context);
260  void InitializeDebugBindings();
261  void ClearBindings();
262  void UpdateDebugExtensionBindings();
263
264  ProcsWGL fn;
265  ProcsWGL debug_fn;
266  ExtensionsWGL ext;
267};
268#endif
269
270#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
271struct GL_EXPORT DriverEGL {
272  void InitializeBindings();
273  void InitializeExtensionBindings(GLContext* context);
274  void InitializeDebugBindings();
275  void ClearBindings();
276  void UpdateDebugExtensionBindings();
277
278  ProcsEGL fn;
279  ProcsEGL debug_fn;
280  ExtensionsEGL ext;
281};
282#endif
283
284#if defined(USE_X11)
285struct GL_EXPORT DriverGLX {
286  void InitializeBindings();
287  void InitializeExtensionBindings(GLContext* context);
288  void InitializeDebugBindings();
289  void ClearBindings();
290  void UpdateDebugExtensionBindings();
291
292  ProcsGLX fn;
293  ProcsGLX debug_fn;
294  ExtensionsGLX ext;
295};
296#endif
297
298// This #define is here to support autogenerated code.
299#define g_current_gl_context g_current_gl_context_tls->Get()
300GL_EXPORT extern base::ThreadLocalPointer<GLApi>* g_current_gl_context_tls;
301
302GL_EXPORT extern OSMESAApi* g_current_osmesa_context;
303GL_EXPORT extern DriverGL g_driver_gl;
304GL_EXPORT extern DriverOSMESA g_driver_osmesa;
305
306#if defined(OS_WIN)
307
308GL_EXPORT extern EGLApi* g_current_egl_context;
309GL_EXPORT extern WGLApi* g_current_wgl_context;
310GL_EXPORT extern DriverEGL g_driver_egl;
311GL_EXPORT extern DriverWGL g_driver_wgl;
312
313#elif defined(USE_X11)
314
315GL_EXPORT extern EGLApi* g_current_egl_context;
316GL_EXPORT extern GLXApi* g_current_glx_context;
317GL_EXPORT extern DriverEGL g_driver_egl;
318GL_EXPORT extern DriverGLX g_driver_glx;
319
320#elif defined(USE_OZONE)
321
322GL_EXPORT extern EGLApi* g_current_egl_context;
323GL_EXPORT extern DriverEGL g_driver_egl;
324
325#elif defined(OS_ANDROID)
326
327GL_EXPORT extern EGLApi* g_current_egl_context;
328GL_EXPORT extern DriverEGL g_driver_egl;
329
330#endif
331
332// Find an entry point to the mock GL implementation.
333void* GL_BINDING_CALL GetMockGLProcAddress(const char* name);
334
335}  // namespace gfx
336
337#endif  // UI_GL_GL_BINDINGS_H_
338