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Diffstat (limited to 'src/gallium/docs/source/screen.rst')
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diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst new file mode 100644 index 0000000000..72bb75a55d --- /dev/null +++ b/src/gallium/docs/source/screen.rst @@ -0,0 +1,69 @@ +Screen +====== + +A screen is an object representing the context-independent part of a device. + +Useful Flags +------------ + +.. _pipe_texture_usage: + +PIPE_TEXTURE_USAGE +^^^^^^^^^^^^^^^^^^ + +These flags determine the possible roles a texture may be used for during its +lifetime. Texture usage flags are cumulative and may be combined to create a +texture that can be used as multiple things. + +* ``RENDER_TARGET``: A colorbuffer or pixelbuffer. +* ``DISPLAY_TARGET``: A sharable buffer that can be given to another process. +* ``PRIMARY``: A frontbuffer or scanout buffer. +* ``DEPTH_STENCIL``: A depthbuffer, stencilbuffer, or Z buffer. Gallium does + not explicitly provide for stencil-only buffers, so any stencilbuffer + validated here is implicitly also a depthbuffer. +* ``SAMPLER``: A texture that may be sampled from in a fragment or vertex + shader. +* ``DYNAMIC``: A texture that will be mapped frequently. + +Methods +------- + +XXX moar; got bored + +get_name +^^^^^^^^ + +Returns an identifying name for the screen. + +get_vendor +^^^^^^^^^^ + +Returns the screen vendor. + +get_param +^^^^^^^^^ + +Get an integer/boolean screen parameter. + +get_paramf +^^^^^^^^^^ + +Get a floating-point screen parameter. + +is_format_supported +^^^^^^^^^^^^^^^^^^^ + +See if a format can be used in a specific manner. + +**usage** is a bitmask of :ref:`PIPE_TEXTURE_USAGE` flags. + +Returns TRUE if all usages can be satisfied. + +.. note:: + + ``PIPE_TEXTURE_USAGE_DYNAMIC`` is not a valid usage. + +texture_create +^^^^^^^^^^^^^^ + +Given a template of texture setup, create a BO-backed texture. |