# The Mesa 3D Graphics Library

# Mesa 9.2 Release Notes / (August 27, 2013)

Mesa 9.2 is a new development release. People who are concerned with stability and reliability should stick with a previous release or wait for Mesa 9.2.1.

Mesa 9.2 implements the OpenGL 3.1 API, but the version reported by glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) / glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used. Some drivers don't support all the features required in OpenGL 3.1. OpenGL 3.1 is only available if requested at context creation because GL_ARB_compatibility is not supported.

## MD5 checksums

    tbd

## New features

Note: some of the new features are only available with certain drivers.

- GL_ARB_shading_language_420pack in all drivers that support GLSL 1.30.
- GL_ARB_texture_buffer_range
- GL_ARB_texture_multisample
- GL_ARB_texture_storage_multisample
- GL_ARB_texture_query_lod
- Enable GL_ARB_texture_storage on radeon, r200, and nouveau
- GL_EXT_discard_framebuffer in all OpenGL ES (all versions) drivers
- GL_EXT_framebuffer_multisample_blit_scaled on i965
- Added new freedreno gallium driver
- OSMesa interface for gallium llvmpipe/softpipe drivers
- Gallium Heads-Up Display (HUD) feature for performance monitoring
- Added support for UVD (2.2 and 3.0) video decoding on r600g and radeonsi through VDPAU (requires Kernel 3.10 or later)

## Bug fixes

Attempts have been made to not include bugs fixed in previous 9.1 releases or bugs that were regressions during 9.2 development. This list is likely incomplete.

- Bug 41787 - [llvmpipe] stencil broken
- Bug 44618 - Cross-compilation broken by glsl builtin_compiler
- Bug 46632 - Make the alignment checks for the readpixel blit fastpath a bit more lenient
- Bug 47116 - Enemy territory freezes with rs880 and commit fbebd431ec4e2e461a0cbcd5f3a04a000b8f6bbf
- Bug 47248 - autogen missing dependency on flex and bison, causes infinite loop in glsl build
- Bug 48694 - radeonsi_pipe.c:322:7: error: ‘PIPE_CAP_DUAL_SOURCE_BLEND’ undeclared
- Bug 50655 - [r600g][RV670 HD3870] Ioquake games causes GPU lockup (waiting for 0x00003039 last fence id 0x00003030)
- Bug 51471 - [965gm] Corrupted graphics in corners of screen with pixel shaders enabled
- Bug 51782 - mesa-8.0.3: fails to compile against uclibc
- Bug 54240 - [swrast] piglit fbo-generatemipmap-filtering regression
- Bug 55503 - Constant vertex attributes broken
- Bug 55783 - glEnable(GL_FRAMEBUFFER_SRGB) has no effect on the backbuffer
- Bug 55825 - [Bisected i965]Oglc max_values(advanced.fragmentProgram.GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB) causes OOM-killer
- Bug 56920 - [sandybridge][uxa] graphics very glitchy and always flickering
- Bug 57753 - leak in loop_analysis
- Bug 57875 - Second Life viewer bad rendering with git-ec83535
- Bug 58666 - rv670 + llvm = errors.
- Bug 58680 - [IVB] Graphical glitches in 0 A.D
- Bug 58872 - Mac OS X configure: error: Couldn't find clock_gettime
- Bug 59322 - r300g MSAA breaks Half-Life 2 in Wine
- Bug 59364 - [bisected] Mesa build fails: clientattrib.c:33:22: fatal error: indirect.h: No such file or directory
- Bug 59439 - glCopyPixels generates no fragments (occlusion_query_meta_fragments test fails)
- Bug 59440 - glBitmap generates no fragments (occlusion_query_meta_fragments test fails)
- Bug 59494 - [Bisected]Piglit glean_depthStencil fails
- Bug 59592 - Radeon HD 5670: reproducable GPU lockups with htile enabled
- Bug 59648 - [SNB/IVB/HSW Bisected]Piglit spec/ARB_uniform_buffer/object_layout-std140-base-size-and-alignment fails
- Bug 59701 - lp_test_arit fails on non-sse41 capable machines, breaking make check
- Bug 59737 - [bisected] 0d108116bd80b757fb01a84a9f1946ef870b57b8 breaks osmesa when cross compiling
- Bug 59740 - [i965 Bisected]Oglc api-error(negative.glEvalMesh) fails
- Bug 59851 - AC_ARG_WITH misusage leading to mesa configure failure
- Bug 59873 - [swrast] piglit ext_framebuffer_multisample-interpolation 0 centroid-edges regression
- Bug 59876 - glGetTexLevelParameteriv broken for indirect rendering
- Bug 60038 - [osmesa] [git] building 32-bit mesa on 64 bit fails
- Bug 60047 - [softpipe] piglit masked-clear regression
- Bug 60052 - [Bisected]Piglit glx_extension_string_sanity fail
- Bug 60082 - [ FAILED ] DispatchSanity_test.GL31_CORE
- Bug 60086 - Wayland platform backend crashes if there's no back buffer during dri2_swap_buffers
- Bug 60098 - [softpipe] Unexpected PIPE_CAP 78 query
- Bug 60172 - Planeshift: triangles where grass would be
- Bug 60200 - radeon_bo with virtual address referencing mismatch
- Bug 60212 - [Bisected] Weston black output
- Bug 60524 - [softpipe] piglit depthstencil-render-miplevels 146 s=z24_s8 regression
- Bug 60527 - [softpipe] fbo-stencil GL_DEPTH24_STENCIL8 clear regression
- Bug 60633 - EXT_texture_sRGB does not work in game The Cave on IvyBridge
- Bug 60737 - In GLSL ES, a missing FS precision qualifier does not generate an error
- Bug 60866 - GLSL performance issues for uniform buffer objects
- Bug 61036 - Shader fails to build in LLVMpipe, aborts program
- Bug 61200 - insufficient linking of libxatracker.so
- Bug 61635 - glVertexAttribPointer(id, GL_UNSIGNED_BYTE, GL_FALSE,...) does not work
- Bug 62466 - r600g hyperz lockups with KSP 0.19
- Bug 62669 - HyperZ freeze when playing PrBoom-Plus demo with lots of monsters
- Bug 62721 - GPU lockup in Minecraft 1.5.1 with HyperZ
- Bug 62830 - [i965 bisected] Wrong Lightning on Freespace 2 SCP (patch attached)
- Bug 63124 - [r600g] HyperZ lockup on REDWOOD in Half Life 2 Deathmatch
- Bug 63702 - tiling2d in radeon trash vdpau UVD textures
- Bug 64935 - [swrast] s_texfetch.c:1335: set_fetch_functions: Assertion `texImage->FetchTexel' failed.
- Bug 64959 - Cannot build against EGL without X11
- Bug 65112 - glcpp hangs parsing line continuations
- Bug 65958 - GPU Lockup on Trinity 7500G
- Bug 66450 - JUNIPER UVD accelerated playback of MPEG 1/2 streams does not work
- Bug 66606 - [i965 bisected]GLBenchmark 2.5.1/2.7.0 sometimes render error with gnome-session enabling SNA
- Bug 66713 - Team Fortress 2 crashes with r600-sb on HD4850
- Bug 67354 - glsl_parser.cpp is broken with bison 3.0
- Bug 67548 - glGetAttribLocation seems to be broken
- Bug 67927 - R600_DEBUG=sb: Celestia show 2 earths, one wrongly rendered
- Bug 67934 - [SNB/IVB/HSW 9.2 Bisected]Ogles2conform/GL2Tests/glUniform/glUniform.test fails with gnome-session enable compositing
- Bug 68162 - [radeonsi] texture rendering is broken in Source-Engine games
- Bug 68195 - piglit tests vs-struct-pad and fs-struct-pad both fail

## Changes

- Removed d3d1x state tracker (unused, unmaintained and broken)
- Removed GL_EXT_clip_volume_hint because no driver had enabled it since 2007.
- Removed GL_MESA_resize_buffers because it was only really implemented by the (unsupported) GDI driver.
- GL_EXT_separate_shader_objects has been removed from all Gallium drivers, because it disallows a critical GLSL shader optimization. GL_ARB_separate_shader_objects doesn't have this issue.
- i965 Gen6+ requires Kernel 3.6 or later. (92d2f5a)