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40e4bc63
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2022-11-09T12:40:48
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Make DrawRangeElements validation consistent with DrawElements
According to the WebGL specification, when an empty buffer is bound to
GL_ELEMENT_ARRAY_BUFFER binding point, one of the possibilities is to
return an error when trying to draw with an index count other than
zero. This is the behavior of DrawElements variants but not
DrawRangeElements.
This change brings variants of DrawRangeElements behavior in line with
that of DrawElements.
Bug: angleproject:7822
Change-Id: I6844efd1038d95c652b72e52209dfdd74f006f9b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4015418
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Alexey Knyazev <lexa.knyazev@gmail.com>
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