Brian Paul
12b959c351
Previously we only examined the GL_DEPTH_MODE state to determine the sampler view swizzle for depth textures. Now we also consider the texture base format for color textures too. The basic idea is if we're sampling from a RGB texture we always want to get A=1, even if the actual hardware format might be RGBA. We had assumed that the texture's A values were always one since that's what Mesa's texstore code does. But if we render to the RGBA texture, the A values might not be 1. Subsequent sampling didn't return the right values. Now we examine the user-specified texture base format vs. the actual gallium format to determine the right swizzle. Fixes several fbo-blending-formats, fbo-clear-formats and fbo-tex-rgbx failures with VMware/svga driver (and possibly other drivers). No other piglit regressions with softpipe or VMware/svga. Reviewed-by: Marek Olšák <maraeo@gmail.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 osmesa mesagdi to build classic mesa Windows GDI drivers; or 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.