From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 91509] Depth render buffer corruption Date: Thu, 30 Jul 2015 13:13:39 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0092636779==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 7C3F37A158 for ; Thu, 30 Jul 2015 06:13:39 -0700 (PDT) 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 --===============0092636779== Content-Type: multipart/alternative; boundary="1438262019.4CC64D00.22261"; charset="UTF-8" --1438262019.4CC64D00.22261 Date: Thu, 30 Jul 2015 13:13:39 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=91509 Bug ID: 91509 Summary: Depth render buffer corruption Product: Mesa Version: git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Drivers/DRI/r200 Assignee: dri-devel@lists.freedesktop.org Reporter: stefandoesinger@gmx.at QA Contact: dri-devel@lists.freedesktop.org Created attachment 117462 --> https://bugs.freedesktop.org/attachment.cgi?id=117462&action=edit Screenshot Since my patches from a few months ago Wine can now use depth renderbuffers instead of textures for FBOs if GL_ARB_depth_texture is not supported. This makes FBOs work on r200, but it appears that there is some render corruption. The best way to describe it is that some parts of the depth buffer seem to be read or written to the wrong place inside the buffer. The attached screenshots show the issue. The application I've run here is the StencilMirror.exe sample from the DirectX 8 SDK. in fbo.png you see incorrect draws at the edges of the window. nofbo.png uses the GLX drawable (GL_BACK) instead of rendering to an FBO, which doesn't show the corruption. The corruption seems to be resolution dependent. I don't see it when I am running the application at 1400x1050 for example. -- You are receiving this mail because: You are the assignee for the bug. --1438262019.4CC64D00.22261 Date: Thu, 30 Jul 2015 13:13:39 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
Bug ID 91509
Summary Depth render buffer corruption
Product Mesa
Version git
Hardware Other
OS All
Status NEW
Severity normal
Priority medium
Component Drivers/DRI/r200
Assignee dri-devel@lists.freedesktop.org
Reporter stefandoesinger@gmx.at
QA Contact dri-devel@lists.freedesktop.org 

Created attachment 117462 [details]
Screenshot

Since my patches from a few months ago Wine can now use depth renderbuffers
instead of textures for FBOs if GL_ARB_depth_texture is not supported. This
makes FBOs work on r200, but it appears that there is some render corruption.
The best way to describe it is that some parts of the depth buffer seem to be
read or written to the wrong place inside the buffer.

The attached screenshots show the issue. The application I've run here is the
StencilMirror.exe sample from the DirectX 8 SDK. in fbo.png you see incorrect
draws at the edges of the window. nofbo.png uses the GLX drawable (GL_BACK)
instead of rendering to an FBO, which doesn't show the corruption.

The corruption seems to be resolution dependent. I don't see it when I am
running the application at 1400x1050 for example.

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