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intel: Return success when asked to allocate a 0-width/height renderbuffer.

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It seems silly that GL lets you allocate these given that they're
framebuffer attachment incomplete, but the webgl conformance tests
actually go looking to see if the getters on 0-width/height
depth/stencil renderbuffers return good values.  By failing out here,
they all got smashed to 0, which turned out to be correct for all the
getters they tested except for GL_RENDERBUFFER_INTERNAL_FORMAT.  Now,
by succeeding but not making a miptree, that one also returns the
expected value.

Acked-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2012-04-23 14:14:11 -07:00
parent 6508b0b9b0
commit b7406404ab
1 changed files with 3 additions and 0 deletions
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3
src/mesa/drivers/dri/intel/intel_fbo.c
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@ -237,6 +237,9 @@ intel_alloc_renderbuffer_storage(struct gl_context * ctx, struct gl_renderbuffer
_mesa_lookup_enum_by_nr(internalFormat),
_mesa_get_format_name(rb->Format), width, height);
if (width == 0 || height == 0)
return true;
irb->mt = intel_miptree_create_for_renderbuffer(intel, rb->Format,
width, height);
if (!irb->mt)