Bug 59285

Summary:	[regression] 2D non-MSAA not working properly
Product:	Mesa	Reporter:	Darren Salt <bugspam>
Component:	Drivers/Gallium/r600	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED NOTABUG	QA Contact:
Severity:	major
Priority:	medium
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	Screenshot, MSAA disabled. 2D image should not be… blurred. Screenshot, MSAA 2x. 2D image (and text) rendered correctly.

Description Darren Salt 2013-01-12 16:03:15 UTC

Created attachment 72907 [details]
Screenshot, MSAA disabled. 2D image should not be… blurred.

I've recently tested both Tremulous (GPP) and Unvanquished with a fresh mesa git build (albeit with one change, ref. bug #53130).

Without MSAA (with r_ext_multisample = 0), a frame or two may be rendered, then ; while much of the rendering is correct, at least some of the text is… apparently smoothed.

(Linux 3.6-rc7, mesa git 5eeedb852b8a422f31d4d4f018187020c713fffa, libdrm 2.4.40, radeon DDX pre-7.0 git)

Comment 1 Darren Salt 2013-01-12 16:04:29 UTC

Created attachment 72908 [details]
Screenshot, MSAA 2x. 2D image (and text) rendered correctly.

Comment 2 Darren Salt 2013-01-12 16:08:30 UTC

For the record, 3D rendering appears fine both with and without MSAA; and I'd intended to say that, without MSAA, rendering may apparently stop while the program continues running otherwise normally.

Comment 3 Marek Olšák 2013-01-12 20:14:57 UTC

Did you turn MLAA on?

Comment 4 Darren Salt 2013-01-12 23:08:42 UTC

Was on, yes. But that's the first time that I've seen it make any difference, co-inciding with MSAA being available for use…

Comment 5 Marek Olšák 2013-01-12 23:27:09 UTC

Long story short, MLAA is disabled if an MSAA visual is used. MLAA can blur everything if you enable the MLAA variant that doesn't use a zbuffer.

This is not a bug.

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