[Mesa-dev] [PATCH 17/23] readpix: for implentation format/type, ignore int vs. non-int check

[Eric Anholt]

Jordan Justen <jordan.l.justen at intel.com> writes:

> In ES or GL+GL_ARB_ES2_compatibility, the usage of
> format = IMPLEMENTATION_COLOR_READ_FORMAT +
> type = IMPLEMENTATION_COLOR_READ_TYPE
> can function, even if the src/dst int vs. non-int types
> differ.

This seems bogus -- why should you get to read to formats that ought to
be invalid?  I bet what we're missing is an implementation of this bit
of spec: "The implementation-chosen format may vary depending on the
format of the selected read buffer of the currently bound read
framebuffer." (section 4.3 of the gles3 spec) which lets us actually
specify a format that makes sense for an int framebuffer.
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