From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 66067] Trine 2's fragment normal buffer is mixtextured on Radeon HD 6770 (Juniper) Date: Wed, 18 Sep 2013 00:52:48 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1766565197==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id A664EE7731 for ; Tue, 17 Sep 2013 17:52:48 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1766565197== Content-Type: multipart/alternative; boundary="1379465568.7de11B1.8640"; charset="us-ascii" --1379465568.7de11B1.8640 Date: Wed, 18 Sep 2013 00:52:48 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=66067 --- Comment #9 from Nicholas Miell --- (In reply to comment #7) >Trine 2 uses those old assembly-like shaders for some reason It's the minimum spec target profile for Nvidia's Cg compiler. > This cannot work > as shadow sampling is only defined for depth textures. According to the > ARB_fragment_program_shadow specification (Trine 2 uses those old > assembly-like shaders for some reason), it is undefined behaviour to sample > from non-depth textures. ARB_fragment_program_shadow may leave it undefined, but the GL spec says the texture unit operates in the normal manner and texture comparison is bypassed if the currently bound texture's base internal format is not DEPTH_COMPONENT or DEPTH_STENCIL. -- You are receiving this mail because: You are the assignee for the bug. --1379465568.7de11B1.8640 Date: Wed, 18 Sep 2013 00:52:48 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 9 on bug 66067 from 
(In reply to comment #7)
>Trine 2 uses those old assembly-like shaders for some reason

It's the minimum spec target profile for Nvidia's Cg compiler.

> This cannot work
> as shadow sampling is only defined for depth textures. According to the
> ARB_fragment_program_shadow specification (Trine 2 uses those old
> assembly-like shaders for some reason), it is undefined behaviour to sample
> from non-depth textures.

ARB_fragment_program_shadow may leave it undefined, but the GL spec says the
texture unit operates in the normal manner and texture comparison is bypassed
if the currently bound texture's base internal format is not DEPTH_COMPONENT or
DEPTH_STENCIL.

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