mesa: Fix FB blitting in case of zero size src or dst rect
Framebuffer blitting operation should be skipped if any of the dimensions (width/height) of src/dst rect is zero. V2: Move the dimension check after error checking in _mesa_BlitFramebuffer. Fixes: fbblit(negative.nullblit.zeroSize) in Intel oglconform https://bugs.freedesktop.org/show_bug.cgi?id=59495 Note: Candidate for all the stable branches. Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com> Reviewed-by: Paul Berry <stereotype441@gmail.com>
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@ -3190,7 +3190,9 @@ _mesa_BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
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}
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}
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if (!mask) {
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if (!mask ||
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(srcX1 - srcX0) == 0 || (srcY1 - srcY0) == 0 ||
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(dstX1 - dstX0) == 0 || (dstY1 - dstY0) == 0) {
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return;
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return;
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}
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}
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