Mesa Release Notes

# The Mesa 3D Graphics Library

# Mesa 7.11 Release Notes / July 31, 2011

Mesa 7.11 is a new development release. People who are concerned with stability and reliability should stick with a previous release or wait for Mesa 7.11.1.

Mesa 7.11 implements the OpenGL 2.1 API, but the version reported by glGetString(GL_VERSION) depends on the particular driver being used. Some drivers don't support all the features required in OpenGL 2.1.

See the Compiling/Installing page for prerequisites for DRI hardware acceleration.

## MD5 checksums

    fa2c7068503133fb2453244cda11cb2a  MesaLib-7.11.tar.gz
    ff03aca82d0560009a076a87c888cf13  MesaLib-7.11.tar.bz2
    ede1ac0976f6f05df586093fc17d63ed  MesaLib-7.11.zip
    b4fb81a47c5caedaefad49af7702c23d  MesaGLUT-7.11.tar.gz
    77a9a0bbd7f8bca882aa5709b88cb071  MesaGLUT-7.11.tar.bz2
    c19ef0c6eb61188c96ed4ccedd70717c  MesaGLUT-7.11.zip

## New features

- GL_ARB_ES2_compatibility (gallium drivers)
- GL_ARB_color_buffer_float (gallium drivers, i965)
- GL_ARB_draw_buffers_blend (gallium)
- GL_ARB_draw_instanced extension (gallium drivers, swrast)
- GL_ARB_instanced_arrays extension (gallium drivers)
- GL_ARB_occlusion_query2 (gallium drivers, swrast)
- GL_ARB_robustness (all drivers)
- GL_ARB_sampler_objects (gallium drivers)
- GL_ARB_seamless_cube_map (gallium r600)
- GL_ARB_shader_texture_lod (gallium drivers, i965)
- GL_ARB_sync (gallium drivers only, intel support was in 7.6)
- GL_ARB_texture_compression_rgtc (gallium drivers, swrast, i965)
- GL_ARB_texture_float (gallium, i965)
- GL_EXT_packed_float (gallium r600)
- GL_EXT_texture_compression_latc (gallium drivers, swrast)
- GL_EXT_texture_compression_rgtc (gallium drivers, swrast, i965)
- GL_EXT_texture_filter_anisotropic (swrast)
- GL_EXT_texture_shared_exponent (gallium drivers, swrast)
- GL_EXT_texture_sRGB_decode (gallium drivers, swrast, i965)
- GL_EXT_texture_snorm (gallium drivers)
- GL_AMD_draw_buffers_blend (alias of the ARB variant)
- GL_AMD_seamless_cubemap_per_texture (gallium r600)
- GL_AMD_shader_stencil_export (alias of the ARB variant)
- GL_ATI_draw_buffers (all drivers)
- GL_ATI_texture_compression_3dc (gallium drivers, swrast)
- GL_ATI_texture_float (gallium, i965)
- GL_NV_conditional_render (i965)
- GL_NV_texture_barrier (gallium drivers)
- Enable 16-wide fragment shader execution in i965 driver. This should improve performance in many applications.
- Initial alpha-level support for Intel "Ivybridge" chipsets in the i965 driver.

## Bug fixes

This list is likely incomplete. This list only includes bug fixes not included in the previous release (7.10.3). Many of these are regressions that did not exist in the 7.10 release series at all.

- Bug 25871 - nearest neighbour samples wrong texel (precision/rounding problem)
- Bug 29162 - mesa/darwin is severly broken
- Bug 30080 - [i915] piglit nodepth-test fails
- Bug 30217 - Possible sources of memory leaks reported by valgrind
- Bug 30266 - Regression, segfault in libdrm_intel when calling glBitmap
- Bug 31561 - [i915] intel_regions.c:289: intel_region_release: Assertion `region->map_refcount == 0' failed.
- Bug 31744 - [GLSL] overriding built-in function impacts another shader
- Bug 32308 - [llvmpipe] src/gallium/auxiliary/gallivm/lp_bld_init.c:319:gallivm_register_garbage_collector_callback: Assertion `NumCallbacks < 32' failed.
- Bug 32309 - [softpipe] SIGSEGV sp_state_derived.c:204
- Bug 32459 - [softpipe] glean depthStencil regression
- Bug 32460 - [softpipe] piglit texwrap 1D regression
- Bug 32534 - [arrandale/sandybridge] Mesa swallowing GEM ioctl failures
- Bug 32560 - To fix: 64-bit-portabilty-issue state_tracker/st_program.c:427
- Bug 32634 - [r300g, bisected] Massive corruption in Unigine Sanctuary
- Bug 32768 - VBO rendering using glDrawArrays causes program termination and "cs IB too big" message
- Bug 32804 - [swrast] glean pixelFormats regression
- Bug 32814 - Build error in osmesa.c due to change in _mesa_update_framebuffer_visual() signature
- Bug 32859 - Mesa doesn't compile under NetBSD
- Bug 32912 - [bisected, r300g] Unigine Sanctuary: r300_emit.c:902:r300_emit_vertex_arrays: Assertion `&buf->b.b' failed with RADEON_HYPERZ=1
- Bug 32945 - [RADEON:KMS:R300G] HiZ: Weird behavior with 3 pipes
- Bug 33046 - [bisected]glean/pixelFormats and 3 oglc cases segfault
- Bug 33185 - [RADEON:KMS:R300G] X crashes when kwin effects are turned on
- Bug 33215 - [llvmpipe] piglit fbo-drawbuffers2-blend regression
- Bug 33247 - [swrast] tnl/t_draw.c:471: _tnl_draw_prims: Assertion `prim[i].num_instances > 0' failed
- Bug 33284 - [llvmpipe] piglit fbo-drawbuffers-fragcolor fails
- Bug 33306 - [glsl] GLSL integer division by zero crashes GLSL compiler
- Bug 33353 - [softpipe] piglit fbo-srgb looks incorrect
- Bug 33360 - inclusion of $(TALLOC_LIBS) in src/mesa/drivers/osmesa/Makefile causes a build failure
- Bug 33374 - [bisect] FTBFS on commit 9767d3b5 (glapi: Fix OpenGL ES 1.1 and 2.0 interop)
- Bug 33508 - [glsl] GLSL compiler modulus by zero crash
- Bug 33555 - [softpipe] tgsi/tgsi_sse2.c:1527:emit_tex: Assertion `0' failed.
- Bug 33885 - [glsl] GLSL compiler allows recursion
- Bug 33823 - [glsl] ralloc.c:78: get_header: Assertion `info->canary == 0x5A1106' failed.
- Bug 33934 - 3D blitting is orders of magnitude slower than equivalent 2D blitting.
- Bug 33946 - Crash: Mesa checks for invalid pointer, then uses it anyway.
- Bug 34008 - r600g: piglit failure (regression)
- Bug 34009 - Automatic Mipmap Generation produces very blurry image.
- Bug 34042 - Surfaceless eglMakeCurrent() fails if the supplied EGLContext is not a dummy context
- Bug 34049 - r600g: assertion failure (regression)
- Bug 34119 - [glsl] piglit glsl-texcoord-array regression
- Bug 34323 - [i915 GLSL gles2] gl_FragCoord.w not correct
- Bug 34346 - src/glsl relies on $PWD which can be unset
- Bug 34378 - st/mesa: 2a904fd6a0cb80eec6dec2bae07fd8778b04caf3 breaks sauerbraten
- Bug 34419 - Kwin crashes screensaver exits
- Bug 34463 - state_tracker/st_texture.c:370:st_texture_image_copy: Assertion `u_minify(src->width0, srcLevel) == width' failed.
- Bug 34468 - src/glsl/Makefile fix
- Bug 34541 - [ilk, wine] massive render corruption after recent patchset
- Bug 34589 - [pineview bisected]many cases regression
- Bug 34595 - [bisected piketon]oglc half_float_vertex(misc.fillmode.wireframe) regressed
- Bug 34597 - [bisected piketon]oglc blend-constcolor and 7 draw-buffers2 subcases regressed
- Bug 34603 - [bisected piketon]oglc vbo subcase basic.bufferdata regressed
- Bug 34604 - [bisected piketon]piglit fbo/fbo-depth-sample-compare regressed
- Bug 34646 - [bisected piketon]ogles2conform GL2Tests/GL/gl_FragCoord/gl_FragCoord_w_frag.test
- Bug 34656 - i965: Crash when running WebGL Conformance Test in firefox-4 nightly build
- Bug 34691 - [GLSL] matrix array member assignment with a complex subscript fails
- Bug 34906 - [Pineview] Some WebGL conformance tests will crash firefox
- Bug 34968 - Bad fps in Lightsmark benchmark
- Bug 35025 - [Patch] Serious compiler warnings
- Bug 35312 - r600g: Automatic mipmap generation doesn't work properly
- Bug 35373 - [[GM45] OpenGL] GL_EXT_texture_sRGB_decode broken
- Bug 35434 - [RADEON:KMS:R600G] etqw: broken ground textures
- Bug 35441 - [PATCH] Mesa does not find nouveau include files with --enable-shared-dricore
- Bug 35614 - [SNB] random hang on piglit case shaders/glsl-max-varyings
- Bug 35820 - [bisected SNB] System hangs when Gnome with compiz start up
- Bug 35822 - [bisected pineview] many cases related to depth and stencil failed
- Bug 35849 - when sampling textures from both fragment and vertex shaders the vertex texture has the incorrect texture bound
- Bug 35852 - [bisected pineview] oglc case pxconv-read failed
- Bug 35961 - src/gallium/auxiliary/util/u_draw.c:77:util_draw_max_index: Assertion `buffer_size - format_size <= buffer_size' failed.
- Bug 36032 - piglit fdo9833 regression
- Bug 36033 - main/shaderapi.c:1044: validate_samplers: Assertion `(sizeof(targetName)/sizeof(*(targetName))) == NUM_TEXTURE_TARGETS' failed.
- Bug 36086 - [wine] Segfault r300_resource_copy_region with some wine apps and RADEON_HYPERZ
- Bug 36182 - Game Trine from https://www.humblebundle.com/ needs ATI_draw_buffers
- Bug 36268 - [r300g, bisected] minor flickering in Unigine Sanctuary
- Bug 36282 - 34a5d3b9f4740601708c82093e2114356d749e65: glxgears segfaults when compiled with shared glapi
- Bug 36333 - can't build demos if mesa build with --enable-selinux
- Bug 36473 - [bisected] piglit bugs/fdo23670-depth_test failed
- Bug 36572 - [bisected]oglc case texenv segfaults
- Bug 36609 - 45920d2ecb38b14fdda5253fecce996570c22863 breaks sauerbraten on r300g
- Bug 36648 - [bisected SNB]piglit fbo/fbo-alphatest-nocolor failed
- Bug 36649 - [bisected SNB]oglc draw-buffers2 failed with 16-wide
- Bug 36753 - Some textures now rendered as completely black after register allocator rewrite.
- Bug 36821 - [bisected SNB]oglc api-texcoord causes GPU hang
- Bug 36914 - r600g: add rv670 flushing workaround. Causes games and some mesa demos to segfault.
- Bug 36917 - Rendering glitches in ETQW
- Bug 36939 - multitexturing is messed up in quake wars (regression)
- Bug 36987 - Intel GMA 4500 ARB_shader_texture_lod support
- Bug 37028 - Amnesia/HPL2 Demo: Strange graphical bugs on r600g
- Bug 37150 - sRGB textures are too bright in Starcraft 2
- Bug 37154 - main/texstore.c:4187: _mesa_texstore_rgb9_e5: Assertion `baseInternalFormat == 0x1907' failed.
- Bug 37157 - [bisected] KDE KWin crashes on start with delayed BO mapping
- Bug 37168 - Regression: Severe memory leak when running Second Life
- Bug 37366 - [i965 bisected ILK] Fragment shader discard tests occasionally fail
- Bug 37383 - incorrect GLSL optimization
- Bug 37476 - [wine] Devil May Cry 4: TXD tgsi opcode unsupported / translation from TGSI failed / missing vertex shader
- Bug 37743 - [bisected i965]oglc GLSLlinker subcase negative.varying.beyondMaxVaryingFloats aborted
- Bug 37766 - Crash in dri2InvalidateBuffers when resizing Java window with OpenGL pipeline enabled
- Bug 37839 - main/teximage.c:2393: _mesa_choose_texture_format: Assertion `f != MESA_FORMAT_NONE' failed.
- Bug 37934 - Corruption with topogun trace
- Bug 38015 - Some extensions enabled even when not supported by the underlying driver
- Bug 38134 - [bisected i965]piglit fbo/fbo-blit-d24s8 crashed
- Bug 38145 - r600g/evergreen: Incorrect rendering of some effects in doom3
- Bug 38440 - ETQW: Model in team select rendering too bright
- Bug 38566 - [regression] ETQW crashes with 21972c85ea734dbfcf69629c6b0b940efb42d4ba
- Bug 38584 - MESA_GLSL=dump causes SEGV in ir_print_visitor::unique_name
- Bug 38599 - THe value of WGL_PBUFFER_HEIGHT_ARB is returned as width in wglQueryPbufferARB
- Bug 38602 - [bisected] Wrong display after "prefer native texture formats when possible" commit
- Bug 38624 - program/ir_to_mesa.cpp:1440: virtual void ir_to_mesa_visitor::visit(ir_dereference_variable*): Assertion `var->location != -1' failed.
- Bug 38626 - vbo: Don't discount stride breaks piglit on softpipe/r600g
- Bug 38649 - piglit fbo-copyteximage regression
- Bug 38762 - [IVB bisected]3D demos like glxgears abort
- Bug 38771 - [[GM45] DRI] GPU hangs with current Mesa GIT when running certain OpenGL applications
- Bug 38842 - Various valid GLX attributes are rejected by MESA glxChooseFBConfig
- Bug 38971 - [bisected]oglc glsl-autointconv subcase negative.function.ambiguousMatch failed
- Bug 38987 - sampler allowed as non-uniform / non-function parameters
- Bug 39024 - [Pineview webgl] many webgl conformance cases crash the browser
- Bug 39083 - [regression, bisected, r600g] Wrong rendering of Bubbles3D screensaver
- Bug 39119 - setting SQ_LDS_RESOURCE_MGMT register to zero in other applications muddles up font rendering permanently
- Bug 39209 - [bisected] Wrong display after "prefer native texture formats when possible" commit - part2
- Bug 39219 - libgl conflict with xbmc causes lock up on xbmc exit
- Bug 39257 - [bisected SNB]Mesa demos engine causes GPU hang
- Bug 39487 - [i965] brw_wm_surface_state.c:495: brw_update_renderbuffer_surface: Assertion `brw->has_surface_tile_offset || (tile_x == 0 && tile_y == 0)' failed.
- Bug 39515 - FTBFS: libEGL depends on libgbm, but libEGL builds first
- Bug 39572 - Cogs: GPU hang

## Changes

- The Windows MSVC project files have been removed. They haven't been maintained in quite a while. Building with SCons is an alternative.
- Removed GL_SGI_texture_color_table support from swrast driver - the only driver that implemented it.

The full set of changes can be viewed by using the following GIT command:

      git log mesa-7.10..mesa-7.11