QuartzCore.framework

QuartzCore, also known as Core Animation, is an Objective-C framework that creates simple animations on UI elements.

Debugging

Available in	2.0 –
Signature	`unsigned CAGetDebugFlags();`

Available in	2.0 –
Signature	`void CASetDebugFlags(unsigned flags);`

Applications linked with QuartzCore will recognize the following debugging (boolean) environment variables:

Flag	Environment variable
1	CA_COLOR_FLUSH^[1]
2	CA_COLOR_COPY
4	CA_COLOR_OPAQUE^[1]^[2]
8	CA_COLOR_NO_WAIT^[1]
16	CA_AUTO_FLUSH
32	CA_PRINT_TREE^[1]
64	CA_PRINT_OBJECTS
128	CA_LOG_IMPLICIT_TRANSACTIONS
256	CA_LOG_MEMORY_USAGE
512	CA_LOG_IMAGE_COPIES
1024	CA_PRINT_PERF
2048	CA_DISABLE_OCCLUSION_CULLING
4096	CA_DISABLE_DIRTY_REGIONS
8192	CA_LOG_TRIPLE_BUFFERING
16384	CA_COLOR_SUBPIXEL
32768	CA_DISABLE_RENDER
65536	CA_ALWAYS_RENDER
131072	CA_COLOR_OFFSCREEN
262144	CA_COLOR_DETACHED
524288	CA_COLOR_CACHED
1048576	CA_DISABLE_DETACHED

Alternatively, you can use the CASetDebugFlags() to update the flags in runtime.

Additionally, the following environment variables not governed by CASetDebugFlags() also exist:

Environment variable	Default	Meaning
CA_BENCHMARK LK_BENCHMARK	false	-
CA_LOG_IMAGE_QUEUE_FRAMES	false	-
CA_PRINT_SHADERS	false	Log the vertex and fragment shader codes when creating them.
CA_DISABLED_EXTENSIONS	NULL	A space-delimited list of the following OpenGL extensions that should be disabled: GL_APPLE_client_storage GL_APPLE_fence GL_APPLE_tile_order_rot GL_EXT_texture_filter_anisotropic GL_EXT_texture_lod_bias GL_OES_framebuffer_object GL_OES_mapbuffer GL_OES_standard_derivatives GL_OES_texture_npot
CA_DISABLE_WORKAROUNDS	false	-
CA_MAX_TEXTURE_UNITS	?	-
CA_MAX_TEXTURE_SIZE	?	-
CA_ENABLE_OGL	true	-
CA_ENABLE_TILING	true	-
CA_RESIZE_YUV_SCALE	0.8	-
MBX2D_OFFSCREEN MBX2D_PAGE_FLIP	true	-
CA_CLONE_OVERSCAN_AMOUNT	0.0?	-
CA_CLONE_DISPLAY	false	-