mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2024-11-26 19:54:33 +08:00
44 lines
1.3 KiB
ReStructuredText
44 lines
1.3 KiB
ReStructuredText
Off-screen Rendering
|
|
====================
|
|
|
|
Mesa's off-screen interface is used for rendering into user-allocated
|
|
memory without any sort of window system or operating system
|
|
dependencies. That is, the GL_FRONT colorbuffer is actually a buffer in
|
|
main memory, rather than a window on your display.
|
|
|
|
The OSMesa API provides three basic functions for making off-screen
|
|
renderings: OSMesaCreateContext(), OSMesaMakeCurrent(), and
|
|
OSMesaDestroyContext(). See the Mesa/include/GL/osmesa.h header for more
|
|
information about the API functions.
|
|
|
|
The OSMesa interface may be used with the gallium software renderers:
|
|
|
|
#. LLVMpipe - this is the high-performance Gallium LLVM driver
|
|
#. Softpipe - this is the reference Gallium software driver
|
|
|
|
There are several examples of OSMesa in the mesa/demos repository.
|
|
|
|
Building OSMesa
|
|
---------------
|
|
|
|
Configure and build Mesa with something like:
|
|
|
|
.. code-block:: sh
|
|
|
|
meson setup builddir -Dosmesa=true -Dgallium-drivers=swrast -Dvulkan-drivers=[] -Dprefix=$PWD/builddir/install
|
|
meson install -C builddir
|
|
|
|
Make sure you have LLVM installed first if you want to use the LLVMpipe
|
|
driver.
|
|
|
|
When the build is complete you should find:
|
|
|
|
::
|
|
|
|
$PWD/builddir/install/lib/libOSMesa.so
|
|
|
|
Set your LD_LIBRARY_PATH to point to $PWD/builddir/install to use the
|
|
libraries
|
|
|
|
When you link your application, link with -lOSMesa
|