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Various aspects of the Coin runtime behaviour can be controlled through setting different environment variables to some value. Most of these variables are there for debugging and problem-workaround purposes, but a few are for telling Coin where to locate external resource files.
Here we will set up a list of some of the environment variables Coin will check for and can alter behavior because of.
| EnvironmentVariable COIN_DEBUG_GLU_INFO |
| EnvironmentVariable COIN_DEBUG_GLU_VERSION |
| EnvironmentVariable COIN_DEBUG_FONTSUPPORT |
| EnvironmentVariable COIN_DEBUG_3DS |
| EnvironmentVariable COIN_DEBUG_AUDIO |
| EnvironmentVariable COIN_DEBUG_BREAK |
| EnvironmentVariable COIN_DEBUG_CACHING |
| EnvironmentVariable COIN_DEBUG_DL |
| EnvironmentVariable COIN_DEBUG_IMPORT |
| EnvironmentVariable COIN_DEBUG_LISTMODULES |
| EnvironmentVariable COIN_DEBUG_SOINPUT_FINDFILE |
| EnvironmentVariable COIN_DEBUG_SOOFFSCREENRENDERER |
| EnvironmentVariable COIN_DEBUG_WRITEREFS |
| EnvironmentVariable COIN_RANDOMIZE_RENDER_CACHING |
| EnvironmentVariable COIN_FREETYPE2_LIBNAME |
| EnvironmentVariable COIN_FORCE_FREETYPE_OFF |
| EnvironmentVariable COIN_FORCE_WIN32FONTS_OFF |
| EnvironmentVariable COIN_FONT_PATH |
| EnvironmentVariable COIN_DISABLE_UTF8 |
Coin from version 4.0 onwards expects all characters related to text rendering to be UTF-8 encoded.
This variable should be a set, if you need to reinstate the old behavior of treating all characters according to the Western Latin-1 encoding.
| EnvironmentVariable COIN_GLBBOX |
If the environment variable COIN_GLBBOX is set to 1, rendering action traversals will apply a bbox action before rendering. This will make sure bounding box caches are updated (needed for view frustum culling). The default Quarter/SoQt/SoWin/SoXt viewers will handle this at their end (which is the proper way to do it), so we don't do this by default.
| EnvironmentVariable COIN_GLU_LIBNAME |
| EnvironmentVariable COIN_AGLGLUE_NO_PBUFFERS |
| EnvironmentVariable COIN_SIMAGE_LIBNAME |
| EnvironmentVariable COIN_GLXGLUE_NO_GLX13_PBUFFERS |
| EnvironmentVariable COIN_GLXGLUE_NO_PBUFFERS |
| EnvironmentVariable COIN_ZLIB_LIBNAME |
| EnvironmentVariable COIN_BZIP2_LIBNAME |
| EnvironmentVariable COIN_WGLGLUE_NO_PBUFFERS |
| EnvironmentVariable COIN_DONT_MANGLE_OUTPUT_NAMES |
| EnvironmentVariable COIN_EXTSELECTION_SAVE_OFFSCREENBUFFER |
| EnvironmentVariable COIN_FORCE_TILED_OFFSCREENRENDERING |
| EnvironmentVariable COIN_GLERROR_DEBUGGING |
| EnvironmentVariable COIN_IDA_DEBUG |
| EnvironmentVariable COIN_OFFSCREENRENDERER_MAX_TILESIZE |
| EnvironmentVariable COIN_OFFSCREENRENDERER_TILEHEIGHT |
| EnvironmentVariable COIN_OFFSCREENRENDERER_TILEWIDTH |
| EnvironmentVariable COIN_OLDSTYLE_FORMATTING |
| EnvironmentVariable COIN_SEPARATE_DIFFUSE_TRANSPARENCY_OVERRIDE |
| EnvironmentVariable COIN_SOINPUT_SEARCH_GLOBAL_DICT |
| EnvironmentVariable COIN_SOOFFSCREENRENDERER_TILEPREFIX |
| EnvironmentVariable COIN_SORTED_LAYERS_USE_NVIDIA_RC |
| EnvironmentVariable COIN_SOUND_BUFFER_LENGTH |
| EnvironmentVariable COIN_SOUND_DISABLE |
| EnvironmentVariable COIN_SOUND_DRIVER_NAME |
| EnvironmentVariable COIN_SOUND_ENABLE |
| EnvironmentVariable COIN_SOUND_INTRO_PAUSE |
| EnvironmentVariable COIN_SOUND_NUM_BUFFERS |
| EnvironmentVariable COIN_SOUND_THREAD_SLEEP_TIME |
| EnvironmentVariable COIN_OPENAL_LIBNAME |
| EnvironmentVariable COIN_TEX2_LINEAR_LIMIT |
| EnvironmentVariable COIN_TEX2_LINEAR_MIPMAP_LIMIT |
| EnvironmentVariable COIN_TEX2_MIPMAP_LIMIT |
| EnvironmentVariable COIN_TEX2_SCALEUP_LIMIT |
| EnvironmentVariable COIN_TEX2_USE_GLTEXSUBIMAGE |
| EnvironmentVariable COIN_MAXIMUM_TEXTURE2_SIZE |
| EnvironmentVariable COIN_MAXIMUM_TEXTURE3_SIZE |
| EnvironmentVariable COIN_USE_GL_VERTEX_ARRAYS |
| EnvironmentVariable COIN_NORMALIZATION_CUBEMAP_SIZE |
| EnvironmentVariable OIV_NUM_SORTED_LAYERS_PASSES |
| EnvironmentVariable COIN_MAX_VBO_MEMORY |
| EnvironmentVariable COIN_NUM_SORTED_LAYERS_PASSES |
| EnvironmentVariable COIN_QUADMESH_PRECISE_LIGHTING |
| EnvironmentVariable COIN_ENABLE_CONFORMANT_GL_CLAMP |
| EnvironmentVariable IV_SEPARATOR_MAX_CACHES |
Can be used to tune the number of display list caches stored in each SoSeparator. The default value is 2.
Setting this value to 0 will disable display list caching, and this is often useful if you experience weird rendering bugs which are hard to track down.
| EnvironmentVariable COIN_AUTOCACHE_LOCAL_MAX |
| EnvironmentVariable COIN_AUTOCACHE_LOCAL_MIN |
| EnvironmentVariable COIN_AUTOCACHE_REMOTE_MAX |
| EnvironmentVariable COIN_AUTOCACHE_REMOTE_MIN |
| EnvironmentVariable COIN_AUTO_CACHING |
| EnvironmentVariable COIN_ENABLE_VBO |
| EnvironmentVariable COIN_VBO |
Set COIN_VBO=0 to disable VBO rendering in Coin. This is useful if you suspect bugs in either Coin's VBO code or in the OpenGL driver VBO handling.
| EnvironmentVariable COIN_VBO_MAX_LIMIT |
Can be used to set the maximum number of items (coordinates, normals, texcoords or colors) allowed when creating a vertex buffer object. On most drivers it's actually slower to render large arrays with VBOs than with normal vertex array rendering.
The default value is 256000, and when the number of items exceeds this Coin will fall back to normal vertex array or immediate mode rendering.
| EnvironmentVariable COIN_VBO_MIN_LIMIT |
Can be used to set the minimum number of items (coordinates, normals, texcoords or colors) allowed when creating a vertex buffer object. It's a bit of overhead setting up the VBOs and the VBO rendering, so we avoid doing this for very small arrays. The default value is 20.
| EnvironmentVariable COIN_SOOFFSCREENRENDERER_ALLOW_RESOURCEHOG |
| EnvironmentVariable SO_DRAGGER_DIR |
| EnvironmentVariable SO_SHADER_DIR |
| EnvironmentVariable COINDIR |
| EnvironmentVariable COIN_ALLOW_SPIDERMONKEY |
| EnvironmentVariable COIN_AUTOCACHE_VBO_LIMIT |
| EnvironmentVariable COIN_CALCULATE_NURBS_NORMALS |
| EnvironmentVariable COIN_CGLGLUE_NO_PBUFFERS |
| EnvironmentVariable COIN_CG_LIBNAME |
| EnvironmentVariable COIN_DEBUG_ASSERT_SOBASE_SETNAME |
| EnvironmentVariable COIN_DEBUG_BINARY_INPUT |
| EnvironmentVariable COIN_DEBUG_CLEANUP |
| EnvironmentVariable COIN_DEBUG_EXTRA |
| EnvironmentVariable COIN_DEBUG_FLATTEN_NODEKITS_ON_WRITE |
| EnvironmentVariable COIN_DEBUG_GLRENDER_TRAVERSAL |
| EnvironmentVariable COIN_DEBUG_GLUNURBSSURFACE |
| EnvironmentVariable COIN_DEBUG_INTERSECTIONDETECTIONACTION |
| EnvironmentVariable COIN_DEBUG_MUTEXLOCK_MAXTIME |
| EnvironmentVariable COIN_DEBUG_MUTEXLOCK_TIMING |
| EnvironmentVariable COIN_DEBUG_MUTEX_COUNT |
| EnvironmentVariable COIN_DEBUG_NORMALIZE |
| EnvironmentVariable COIN_DEBUG_NPRINTF |
| EnvironmentVariable COIN_DEBUG_NURBS_COMPLEXITY |
| EnvironmentVariable COIN_DEBUG_ROOT_NOTIFICATIONS |
| EnvironmentVariable COIN_DEBUG_SIMAGE |
| EnvironmentVariable COIN_DEBUG_SOEXTSELECTION |
| EnvironmentVariable COIN_DEBUG_SOFILE_READ |
| EnvironmentVariable COIN_DEBUG_SOOFFSCREENRENDERER_TILEPREFIX |
| EnvironmentVariable COIN_DEBUG_SPIDERMONKEY_BINDING |
| EnvironmentVariable COIN_DEBUG_STRING_GROW |
| EnvironmentVariable COIN_DEBUG_TRACK_SOBASE_INSTANCES |
| EnvironmentVariable COIN_DEBUG_VBO |
| EnvironmentVariable COIN_DEBUG_VRMLSCRIPT |
| EnvironmentVariable COIN_FONTCONFIG_LIBNAME |
| EnvironmentVariable COIN_FORCE_AGL |
| EnvironmentVariable COIN_FORCE_FONTCONFIG_OFF |
| EnvironmentVariable COIN_GLU_SILENCE_TESS_COMBINE_WARNING |
| EnvironmentVariable COIN_GL_DISABLE_VBO |
| EnvironmentVariable COIN_GL_NO_CURRENT_CONTEXT_CHECK |
| EnvironmentVariable COIN_HANDLE_STACK_OVERFLOW |
| EnvironmentVariable COIN_NESTED_CACHING |
| EnvironmentVariable COIN_NOT_STRICT_VRML97 |
| EnvironmentVariable COIN_NO_NVIDIA_COLOR_PER_FACE_BUG_WORKAROUND |
| EnvironmentVariable COIN_NO_SOTYPE_DYNLOAD |
| EnvironmentVariable COIN_OFFSCREEN_STENCIL_BITS |
| EnvironmentVariable COIN_OLD_NURBS_COMPLEXITY |
| EnvironmentVariable COIN_PREFER_GLU_TESSELLATOR |
| EnvironmentVariable COIN_REDUCE_LINEAR_NURBS_STEPS |
| EnvironmentVariable COIN_SMART_CACHING |
| EnvironmentVariable COIN_SPIDERMONKEY_LIBNAME |
| EnvironmentVariable COIN_TEX2_ANISOTROPIC_LIMIT |
| EnvironmentVariable COIN_TEX2_USE_SGIS_GENERATE_MIPMAP |
| EnvironmentVariable COIN_VERTEX_ARRAYS |
| EnvironmentVariable COIN_VIEWUP |
| EnvironmentVariable WINDIR |
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