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This patch validates those sampler views with backing copy of texture whose original copy has been updated since the view is last validated. This is done here at draw time because the texture binding might not have modified, hence validation is not triggered at state update time, and yet the texture might have been updated in another context, so we need to re-validate the sampler view in order to update the backing copy of the updated texture. This fixes a rendering flickering issue with Photoshop running in Linux VM with HWversion 11. The problem is Photoshop renders to texture A in context X, and then bind texture A to context Y. The first time when texture A is bound to context Y, cso calls pipe->set_sampler_views(). Validation of sampler views is done, rendering is fine. But when texture A is rendered to again in context X, and rebound in context Y, cso skips pipe->set_sampler_views() because texture A is already bound in context Y. SVGA driver is not given a chance to re-validate the texture binding, the backing copy of the texture is not updated, and hence causes black image. Tested with Photoshop, MTT glretrace, piglit. Fixes VMware bug 1769103. Reviewed-by: Jose Fonseca <jfonseca@vmware.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 https://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.