Bug 95110

Summary:	Some Ogre 2.1 demos doesn't render properly
Product:	Mesa	Reporter:	MWATTT <megwattt>
Component:	Mesa core	Assignee:	mesa-dev
Status:	RESOLVED NOTOURBUG	QA Contact:	mesa-dev
Severity:	normal
Priority:	medium
Version:	11.2
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	Apitrace of "Sample_Hdr" demo The demo on Catalyst (good) The demo on r600g (bad)

Description MWATTT 2016-04-24 19:39:00 UTC

Some Ogre 2.1 demos (for example the "Sample_Hdr" demo) are misrendered with mesa drivers. For the "Sample_Hdr" demo, no shadows are rendered. 

Tested with r600g on JUNIPER XT chip. I also got this bug with LLVMPIPE. i965 on Skylake iGPU seems to have additional problems.

I'll upload an apitrace as well as an image of what should be rendered.

Comment 1 MWATTT 2016-04-24 19:46:16 UTC

Created attachment 123218 [details]
Apitrace of "Sample_Hdr" demo

Comment 2 MWATTT 2016-04-26 01:32:21 UTC

Created attachment 123262 [details]
The demo on Catalyst (good)

Comment 3 MWATTT 2016-04-26 01:37:13 UTC

Created attachment 123263 [details]
The demo on r600g (bad)

Comment 4 Marek Olšák 2016-05-30 14:44:18 UTC

The apitrace contains invalid OpenGL calls, which may work with incorrect drivers, but not with Mesa. This is the list of GL errors:

Mesa: User error: GL_INVALID_ENUM in glTexImage2D(incompatible format = GL_DEPTH_COMPONENT, type = GL_DEPTH_COMPONENT)
Mesa: User error: GL_INVALID_ENUM in glTexImage2D(incompatible format = GL_DEPTH_STENCIL, type = GL_DEPTH_STENCIL)
Mesa: User error: GL_INVALID_OPERATION in glTexImage2D(incompatible format = GL_BGR, type = GL_UNSIGNED_SHORT_5_6_5)
Mesa: User error: GL_INVALID_OPERATION in glTexImage2D(integer/non-integer format mismatch)
Mesa: User error: GL_INVALID_VALUE in glBindAttribLocation(index)
Mesa: User error: GL_INVALID_FRAMEBUFFER_OPERATION in glClear(incomplete framebuffer)
Mesa: User error: GL_INVALID_FRAMEBUFFER_OPERATION in glMultiDrawElementsIndirect(incomplete framebuffer)

The GLSL compiler also detected uninitialized variables in various shaders:

0:249(28): warning: `nNormal' used uninitialized
0:252(14): warning: `material' used uninitialized
0:252(14): warning: `ROUGHNESS' used uninitialized
0:288(54): warning: `diffuseCol' used uninitialized
0:290(37): warning: `specularCol' used uninitialized
etc.

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