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authorAlejandro PiƱeiro <[email protected]>2015-12-19 12:45:43 +0100
committerEduardo Lima Mitev <[email protected]>2016-03-03 15:14:06 +0100
commite98a3c799f5db65966f87c5d59552ae22a001084 (patch)
tree5bf81edfea3eb6e5a8cbe6aec0066192dc69e675 /common.py
parent580816b74723af481dd85c845caca8aa41274ed5 (diff)
mesa/formatquery: handle unmodified buffer for SAMPLES on the 64-bit query
From arb_internalformat_query2 spec: " If <internalformat> is not color-renderable, depth-renderable, or stencil-renderable (as defined in section 4.4.4), or if <target> does not support multiple samples (ie other than TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY, or RENDERBUFFER), <params> is not modified." So there are cases where the buffer should not be modified. As the 64-bit query is a wrapper over the 32-bit query, we can't just copy the values to the equivalent 32-bit buffer, as that would fail if the original params contained values greater that INT_MAX. So we need to copy-back only the values that got modified by the 32-bit query. We do that by filling the temporal buffer by negatives, as the 32-bit query should not return negative values ever. Reviewed-by: Dave Airlie <[email protected]>
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