| Summary: | VPP scaling defects when target size (w or h) is not aligned to 16 pixels | ||
|---|---|---|---|
| Product: | libva | Reporter: | David Verbeiren <david.verbeiren> |
| Component: | intel | Assignee: | Zhao Halley <halley.zhao> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | CC: | haihao.xiang |
| Version: | unspecified | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
Test code
patch part 1 patch part2 |
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Created attachment 64760 [details]
patch part 1
enable horizontal and vertical mask for boundary blocks
Created attachment 64761 [details]
patch part2
load block mask for the last block in a loop of asm code
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Created attachment 63600 [details] Test code Using VA VPP scaling, when one dimension (width or height) of the output region is not a multiple of 16, the result incorrectly extends to the next complete block of 16 columns (to the right) or rows (to the bottom), filling extraneous columns or rows with a repeat of the last valid column or row. This was observed on a SNB system, running Ubuntu 12.04. libva and intel-driver were built from sources from the staging branch. The attached test code reproduces this problem. Press enter in the console to increase target width and height by 1 pixel each time.