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gallium: Change the resource_copy_region semantics to allow copies between different yet compatible formats

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This commit is contained in:
José Fonseca 2010-09-13 11:14:54 +01:00
parent 61c2861b4e
commit 91a9325761
1 changed files with 5 additions and 3 deletions
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8
src/gallium/docs/source/context.rst
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@ -263,9 +263,11 @@ apart from any 3D state in the context. Blitting functionality may be
moved to a separate abstraction at some point in the future.
``resource_copy_region`` blits a region of a subresource of a resource to a
region of another subresource of a resource, provided that both resources have the
same format. The source and destination may be the same resource, but overlapping
blits are not permitted.
region of another subresource of a resource, provided that both resources have
the same format, or compatible formats, i.e., formats for which copying the
bytes from the source resource unmodified to the destination resource will
achieve the same effect of a textured quad blitter. The source and destination
may be the same resource, but overlapping blits are not permitted.
``resource_resolve`` resolves a multisampled resource into a non-multisampled
one. Formats and dimensions must match. This function must be present if a driver