src/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
  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.
 204 typedef struct osmesa_context *OSMesaContext;
 205 typedef void (*OSMESAproc)();
 206
 207 // Forward declare EGL types.
 208 typedef 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
 225 namespace gfx {
 226
 227 struct 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
 244 struct 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)
 257 struct 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)
 271 struct 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)
 285 struct 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()
 300 GL_EXPORT extern base::ThreadLocalPointer<GLApi>* g_current_gl_context_tls;
 301
 302 GL_EXPORT extern OSMESAApi* g_current_osmesa_context;
 303 GL_EXPORT extern DriverGL g_driver_gl;
 304 GL_EXPORT extern DriverOSMESA g_driver_osmesa;
 305
 306 #if defined(OS_WIN)
 307
 308 GL_EXPORT extern EGLApi* g_current_egl_context;
 309 GL_EXPORT extern WGLApi* g_current_wgl_context;
 310 GL_EXPORT extern DriverEGL g_driver_egl;
 311 GL_EXPORT extern DriverWGL g_driver_wgl;
 312
 313 #elif defined(USE_X11)
 314
 315 GL_EXPORT extern EGLApi* g_current_egl_context;
 316 GL_EXPORT extern GLXApi* g_current_glx_context;
 317 GL_EXPORT extern DriverEGL g_driver_egl;
 318 GL_EXPORT extern DriverGLX g_driver_glx;
 319
 320 #elif defined(USE_OZONE)
 321
 322 GL_EXPORT extern EGLApi* g_current_egl_context;
 323 GL_EXPORT extern DriverEGL g_driver_egl;
 324
 325 #elif defined(OS_ANDROID)
 326
 327 GL_EXPORT extern EGLApi* g_current_egl_context;
 328 GL_EXPORT extern DriverEGL g_driver_egl;
 329
 330 #endif
 331
 332 // Find an entry point to the mock GL implementation.
 333 void* GL_BINDING_CALL GetMockGLProcAddress(const char* name);
 334
 335 }  // namespace gfx
 336
 337 #endif  // UI_GL_GL_BINDINGS_H_