From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 88642] Trilinear sampling on cubemap wrongly sampled at the border of rasterized triangle on HAWAII Date: Tue, 20 Jan 2015 22:52:43 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0241075566==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id E87BA6E25B for ; Tue, 20 Jan 2015 14:52:43 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0241075566== Content-Type: multipart/alternative; boundary="1421794363.b1B830.24531"; charset="UTF-8" --1421794363.b1B830.24531 Date: Tue, 20 Jan 2015 22:52:43 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=88642 Bug ID: 88642 Summary: Trilinear sampling on cubemap wrongly sampled at the border of rasterized triangle on HAWAII Product: Mesa Version: 10.4 Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: vljn@ovi.com QA Contact: dri-devel@lists.freedesktop.org Created attachment 112566 --> https://bugs.freedesktop.org/attachment.cgi?id=112566&action=edit Test case Hi, on a R290X with a fresh fedora 21 install (Mesa 10.4.1) a fragment shader sampling a cubemap texture with trilinear filtering is not correctly executed on the edge of rasterized triangles. I've included a patch against piglit that display the behaviour. On my system the test display a small orange diagonal line on top of the color pattern. (the test doesn't check result atm) I think it's related to some quad pattern : in my app that has a depth buffer the line follows the edge of the geometry. -- You are receiving this mail because: You are the assignee for the bug. --1421794363.b1B830.24531 Date: Tue, 20 Jan 2015 22:52:43 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
Bug ID 88642
Summary Trilinear sampling on cubemap wrongly sampled at the border of rasterized triangle on HAWAII
Product Mesa
Version 10.4
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component Drivers/Gallium/radeonsi
Assignee dri-devel@lists.freedesktop.org
Reporter vljn@ovi.com
QA Contact dri-devel@lists.freedesktop.org 

Created attachment 112566 [details]
Test case

Hi,

on a R290X with a fresh fedora 21 install (Mesa 10.4.1) a fragment shader
sampling a cubemap texture with trilinear filtering is not correctly executed
on the edge of rasterized triangles.

I've included a patch against piglit that display the behaviour. On my system
the test display a small orange diagonal line on top of the color pattern. 
(the test doesn't check result atm)

I think it's related to some quad pattern : in my app that has a depth buffer
the line follows the edge of the geometry.

You are receiving this mail because:
  • You are the assignee for the bug.
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