Nicolai Hähnle
784269aa40
There is an annoying corner case that I stumbled across while looking into piglit's arb_shader_image_load_store/execution/load-from-cleared-image.shader_test (which can be easily adapted to demonstrate the bug without the ARB_shader_image_load_store extension) When we bind a texture and then clear it using glClear (by attaching it to the current framebuffer) for the first time, we allocate a separate cmask for the texture to do fast clear, but the corresponding bit in compressed_colortex_mask is not set. Subsequent rendering will use incorrect data. Conversely, when a currently bound texture with an existing cmask is exported leading to that cmask being disabled, the compressed_colortex_mask bit will remain set, leading to an assertion later on in debug builds. Since iterating through all contexts and/or remembering where every texture is bound would be costly, and cmask enable/disable should be rare, we will maintain a global counter to signal contexts that they must update their compressed_colortex_masks. This patch introduces the global counter, and subsequent patches will do the mask update. Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Reviewed-by: Marek Olšák <marek.olsak@amd.com>
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see http://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.