ui/gl/gl_bindings.h

   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 #define GL_BIND_GENERATES_RESOURCE_CHROMIUM              0x9244
  78
  79 // GL_CHROMIUM_gpu_memory_manager
  80 #define GL_TEXTURE_POOL_CHROMIUM                         0x6000
  81 #define GL_TEXTURE_POOL_MANAGED_CHROMIUM                 0x6001
  82 #define GL_TEXTURE_POOL_UNMANAGED_CHROMIUM               0x6002
  83
  84 // GL_ANGLE_pack_reverse_row_order
  85 #define GL_PACK_REVERSE_ROW_ORDER_ANGLE                  0x93A4
  86
  87 // GL_ANGLE_texture_usage
  88 #define GL_TEXTURE_USAGE_ANGLE                           0x93A2
  89 #define GL_FRAMEBUFFER_ATTACHMENT_ANGLE                  0x93A3
  90
  91 // GL_EXT_texture_storage
  92 #define GL_TEXTURE_IMMUTABLE_FORMAT_EXT                  0x912F
  93 #define GL_ALPHA8_EXT                                    0x803C
  94 #define GL_LUMINANCE8_EXT                                0x8040
  95 #define GL_LUMINANCE8_ALPHA8_EXT                         0x8045
  96 #define GL_RGBA32F_EXT                                   0x8814
  97 #define GL_RGB32F_EXT                                    0x8815
  98 #define GL_ALPHA32F_EXT                                  0x8816
  99 #define GL_LUMINANCE32F_EXT                              0x8818
 100 #define GL_LUMINANCE_ALPHA32F_EXT                        0x8819
 101 #define GL_RGBA16F_EXT                                   0x881A
 102 #define GL_RGB16F_EXT                                    0x881B
 103 #define GL_ALPHA16F_EXT                                  0x881C
 104 #define GL_LUMINANCE16F_EXT                              0x881E
 105 #define GL_LUMINANCE_ALPHA16F_EXT                        0x881F
 106 #define GL_BGRA8_EXT                                     0x93A1
 107
 108 // GL_ANGLE_instanced_arrays
 109 #define GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE             0x88FE
 110
 111 // GL_EXT_occlusion_query_boolean
 112 #define GL_ANY_SAMPLES_PASSED_EXT                        0x8C2F
 113 #define GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT           0x8D6A
 114 #define GL_CURRENT_QUERY_EXT                             0x8865
 115 #define GL_QUERY_RESULT_EXT                              0x8866
 116 #define GL_QUERY_RESULT_AVAILABLE_EXT                    0x8867
 117
 118 // GL_CHROMIUM_command_buffer_query
 119 #define GL_COMMANDS_ISSUED_CHROMIUM                      0x84F2
 120
 121 /* GL_CHROMIUM_get_error_query */
 122 #define GL_GET_ERROR_QUERY_CHROMIUM                      0x84F3
 123
 124 /* GL_CHROMIUM_command_buffer_latency_query */
 125 #define GL_LATENCY_QUERY_CHROMIUM                        0x84F4
 126
 127 /* GL_CHROMIUM_async_pixel_transfers */
 128 #define GL_ASYNC_PIXEL_UNPACK_COMPLETED_CHROMIUM         0x84F5
 129 #define GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM           0x84F6
 130
 131 // GL_CHROMIUM_sync_query
 132 #define GL_COMMANDS_COMPLETED_CHROMIUM                   0x84F7
 133
 134 // GL_OES_texure_3D
 135 #define GL_SAMPLER_3D_OES                                0x8B5F
 136
 137 // GL_OES_depth24
 138 #define GL_DEPTH_COMPONENT24_OES                         0x81A6
 139
 140 // GL_OES_depth32
 141 #define GL_DEPTH_COMPONENT32_OES                         0x81A7
 142
 143 // GL_OES_packed_depth_stencil
 144 #ifndef GL_DEPTH24_STENCIL8_OES
 145 #define GL_DEPTH24_STENCIL8_OES                          0x88F0
 146 #endif
 147
 148 #ifndef GL_DEPTH24_STENCIL8
 149 #define GL_DEPTH24_STENCIL8                              0x88F0
 150 #endif
 151
 152 // GL_OES_compressed_ETC1_RGB8_texture
 153 #define GL_ETC1_RGB8_OES                                 0x8D64
 154
 155 // GL_AMD_compressed_ATC_texture
 156 #define GL_ATC_RGB_AMD                                   0x8C92
 157 #define GL_ATC_RGBA_EXPLICIT_ALPHA_AMD                   0x8C93
 158 #define GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD               0x87EE
 159
 160 // GL_IMG_texture_compression_pvrtc
 161 #define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG               0x8C00
 162 #define GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG               0x8C01
 163 #define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG              0x8C02
 164 #define GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG              0x8C03
 165
 166 // GL_OES_vertex_array_object
 167 #define GL_VERTEX_ARRAY_BINDING_OES                      0x85B5
 168
 169 // GL_CHROMIUM_pixel_transfer_buffer_object
 170 #define GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM         0x78EC
 171 #define GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM           0x78ED
 172 #define GL_PIXEL_PACK_TRANSFER_BUFFER_BINDING_CHROMIUM   0x78EE
 173 #define GL_PIXEL_UNPACK_TRANSFER_BUFFER_BINDING_CHROMIUM 0x78EF
 174
 175 /* GL_EXT_discard_framebuffer */
 176 #ifndef GL_EXT_discard_framebuffer
 177 #define GL_COLOR_EXT                                     0x1800
 178 #define GL_DEPTH_EXT                                     0x1801
 179 #define GL_STENCIL_EXT                                   0x1802
 180 #endif
 181
 182 // GL_ARB_get_program_binary
 183 #define PROGRAM_BINARY_RETRIEVABLE_HINT                  0x8257
 184 // GL_OES_get_program_binary
 185 #define GL_PROGRAM_BINARY_LENGTH_OES                     0x8741
 186 #define GL_NUM_PROGRAM_BINARY_FORMATS_OES                0x87FE
 187 #define GL_PROGRAM_BINARY_FORMATS_OES                    0x87FF
 188
 189 #ifndef GL_EXT_multisampled_render_to_texture
 190 #define GL_RENDERBUFFER_SAMPLES_EXT                      0x8CAB
 191 #define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT        0x8D56
 192 #define GL_MAX_SAMPLES_EXT                               0x8D57
 193 #define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SAMPLES_EXT    0x8D6C
 194 #endif
 195
 196 #ifndef GL_IMG_multisampled_render_to_texture
 197 #define GL_RENDERBUFFER_SAMPLES_IMG                      0x9133
 198 #define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_IMG        0x9134
 199 #define GL_MAX_SAMPLES_IMG                               0x9135
 200 #define GL_TEXTURE_SAMPLES_IMG                           0x9136
 201 #endif
 202
 203 #define GL_GLEXT_PROTOTYPES 1
 204
 205 #if defined(OS_WIN)
 206 #define GL_BINDING_CALL WINAPI
 207 #else
 208 #define GL_BINDING_CALL
 209 #endif
 210
 211 #define GL_SERVICE_LOG(args) DLOG(INFO) << args;
 212 #if defined(NDEBUG)
 213   #define GL_SERVICE_LOG_CODE_BLOCK(code)
 214 #else
 215   #define GL_SERVICE_LOG_CODE_BLOCK(code) code
 216 #endif
 217
 218 // Forward declare OSMesa types.
 219 typedef struct osmesa_context *OSMesaContext;
 220 typedef void (*OSMESAproc)();
 221
 222 // Forward declare EGL types.
 223 typedef uint64 EGLuint64CHROMIUM;
 224
 225 #include "gl_bindings_autogen_gl.h"
 226 #include "gl_bindings_autogen_osmesa.h"
 227
 228 #if defined(OS_WIN)
 229 #include "gl_bindings_autogen_egl.h"
 230 #include "gl_bindings_autogen_wgl.h"
 231 #elif defined(USE_X11)
 232 #include "gl_bindings_autogen_egl.h"
 233 #include "gl_bindings_autogen_glx.h"
 234 #elif defined(USE_OZONE)
 235 #include "gl_bindings_autogen_egl.h"
 236 #elif defined(OS_ANDROID)
 237 #include "gl_bindings_autogen_egl.h"
 238 #endif
 239
 240 namespace gfx {
 241
 242 struct GL_EXPORT DriverGL {
 243   void InitializeStaticBindings();
 244   void InitializeCustomDynamicBindings(GLContext* context);
 245   void InitializeDebugBindings();
 246   void InitializeNullDrawBindings();
 247   // TODO(danakj): Remove this when all test suites are using null-draw.
 248   bool HasInitializedNullDrawBindings();
 249   bool SetNullDrawBindingsEnabled(bool enabled);
 250   void ClearBindings();
 251
 252   ProcsGL fn;
 253   ProcsGL orig_fn;
 254   ProcsGL debug_fn;
 255   ExtensionsGL ext;
 256   bool null_draw_bindings_enabled;
 257
 258  private:
 259   void InitializeDynamicBindings(GLContext* context);
 260 };
 261
 262 struct GL_EXPORT DriverOSMESA {
 263   void InitializeStaticBindings();
 264   void InitializeDynamicBindings(GLContext* context);
 265   void InitializeDebugBindings();
 266   void ClearBindings();
 267
 268   ProcsOSMESA fn;
 269   ProcsOSMESA debug_fn;
 270   ExtensionsOSMESA ext;
 271 };
 272
 273 #if defined(OS_WIN)
 274 struct GL_EXPORT DriverWGL {
 275   void InitializeStaticBindings();
 276   void InitializeDynamicBindings(GLContext* context);
 277   void InitializeDebugBindings();
 278   void ClearBindings();
 279
 280   ProcsWGL fn;
 281   ProcsWGL debug_fn;
 282   ExtensionsWGL ext;
 283 };
 284 #endif
 285
 286 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
 287 struct GL_EXPORT DriverEGL {
 288   void InitializeStaticBindings();
 289   void InitializeDynamicBindings(GLContext* context);
 290   void InitializeDebugBindings();
 291   void ClearBindings();
 292
 293   ProcsEGL fn;
 294   ProcsEGL debug_fn;
 295   ExtensionsEGL ext;
 296 };
 297 #endif
 298
 299 #if defined(USE_X11)
 300 struct GL_EXPORT DriverGLX {
 301   void InitializeStaticBindings();
 302   void InitializeDynamicBindings(GLContext* context);
 303   void InitializeDebugBindings();
 304   void ClearBindings();
 305
 306   ProcsGLX fn;
 307   ProcsGLX debug_fn;
 308   ExtensionsGLX ext;
 309 };
 310 #endif
 311
 312 // This #define is here to support autogenerated code.
 313 #define g_current_gl_context g_current_gl_context_tls->Get()
 314 GL_EXPORT extern base::ThreadLocalPointer<GLApi>* g_current_gl_context_tls;
 315
 316 GL_EXPORT extern OSMESAApi* g_current_osmesa_context;
 317 GL_EXPORT extern DriverGL g_driver_gl;
 318 GL_EXPORT extern DriverOSMESA g_driver_osmesa;
 319
 320 #if defined(OS_WIN)
 321
 322 GL_EXPORT extern EGLApi* g_current_egl_context;
 323 GL_EXPORT extern WGLApi* g_current_wgl_context;
 324 GL_EXPORT extern DriverEGL g_driver_egl;
 325 GL_EXPORT extern DriverWGL g_driver_wgl;
 326
 327 #elif defined(USE_X11)
 328
 329 GL_EXPORT extern EGLApi* g_current_egl_context;
 330 GL_EXPORT extern GLXApi* g_current_glx_context;
 331 GL_EXPORT extern DriverEGL g_driver_egl;
 332 GL_EXPORT extern DriverGLX g_driver_glx;
 333
 334 #elif defined(USE_OZONE)
 335
 336 GL_EXPORT extern EGLApi* g_current_egl_context;
 337 GL_EXPORT extern DriverEGL g_driver_egl;
 338
 339 #elif defined(OS_ANDROID)
 340
 341 GL_EXPORT extern EGLApi* g_current_egl_context;
 342 GL_EXPORT extern DriverEGL g_driver_egl;
 343
 344 #endif
 345
 346 }  // namespace gfx
 347
 348 #endif  // UI_GL_GL_BINDINGS_H_