Bug 76978 - glBlendFuncSeparatei (IrisPro with Mesa DRI / 3.0 Mesa 10.0.1)
Summary: glBlendFuncSeparatei (IrisPro with Mesa DRI / 3.0 Mesa 10.0.1)
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: 10.0
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Ian Romanick
QA Contact: Intel 3D Bugs Mailing List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-04-03 05:32 UTC by Branimir Karadzic
Modified: 2014-08-11 03:15 UTC (History)
0 users

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i915 platform:
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Attachments

Description Branimir Karadzic 2014-04-03 05:32:54 UTC 
Mesa reports availability of ARB_draw_buffers_blend but glBlendFuncSeparatei fails with GL_INVALID_OPERATION.

HW is BrixPro with i7-4770R with SteamOS (Mesa DRI / 3.0 Mesa 10.0.1).

To reproduce bug:

	git clone git://github.com/bkaradzic/bx.git
	git clone git://github.com/bkaradzic/bgfx.git
	cd bgfx
	../bx/tools/linux/bin/premake4 --file=premake/premake4.lua --gcc=linux-gcc gmake
	make -C .build/projects/gmake-linux config=debug64 example-19-oit
	cd examples/runtime
	../../.build/linux64_gcc/bin/example-18-oitDebug

Switch to MRT option, and you will get (MESA_DEBUG=verbose):
"Mesa: User error: GL_INVALID_OPERATION in unsupported function called (unsupported extension or deprecated function?)"
Comment 1 Iago Toral 2014-04-03 09:58:11 UTC 
(In reply to comment #0)
> Mesa reports availability of ARB_draw_buffers_blend but glBlendFuncSeparatei
> fails with GL_INVALID_OPERATION.
> 
> HW is BrixPro with i7-4770R with SteamOS (Mesa DRI / 3.0 Mesa 10.0.1).
> 
> To reproduce bug:
> 
> 	git clone git://github.com/bkaradzic/bx.git
> 	git clone git://github.com/bkaradzic/bgfx.git
> 	cd bgfx
> 	../bx/tools/linux/bin/premake4 --file=premake/premake4.lua --gcc=linux-gcc

Should be:
../bx/tools/bin/linux/premake4 --file=premake/premake4.lua --gcc=linux-gcc

> gmake
> 	make -C .build/projects/gmake-linux config=debug64 example-19-oit
> 	cd examples/runtime
> 	../../.build/linux64_gcc/bin/example-18-oitDebug
> 
> Switch to MRT option, and you will get (MESA_DEBUG=verbose):
> "Mesa: User error: GL_INVALID_OPERATION in unsupported function called
> (unsupported extension or deprecated function?)"

It looks like the i965 driver does not provide an implementation for ctx->Driver.BlendFuncSeparate. I am not sure what are the requirements for the Xserver to advertise the extension though.
Comment 2 Matt Turner 2014-08-11 03:15:16 UTC 
Likely fixed by commit 76b11d15:

http://cgit.freedesktop.org/mesa/mesa/commit/?id=76b11d15d36db9e83b36efe469c27d68389bb627

I'm marking as fixed, but please reopen if it's not.

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