Kenneth Graunke
cb9a4ae6c0
The GL_EXT_texture_sRGB_decode spec says: "The conversion of sRGB color space components to linear color space is always performed if the texel lookup function is one of the texelFetch builtin functions. Otherwise, if the texel lookup function is one of the texture builtin functions or one of the texture gather functions, the conversion of sRGB color space components to linear color space is controlled by the TEXTURE_SRGB_DECODE_EXT parameter. If the TEXTURE_SRGB_DECODE_EXT parameter is DECODE_EXT, the conversion of sRGB color space components to linear color space is performed. If the TEXTURE_SRGB_DECODE_EXT parameter is SKIP_DECODE_EXT, the value is returned without decoding. However, if the texture is also accessed with a texelFetch function, then the result of texture builtin functions and/or texture gather functions may be returned with decoding or without decoding." This patch makes i965 force sRGB decoding for any textures accessed via texelFetch(). If textures are accessed via texelFetch() and a regular texture access function, this will affect the other ones too - which is fine - it's undefined according to the last paragraph quoted. We could make both work, but we'd have to emit multiple SURFACE_STATEs, and have two binding table sections, like we do for texture gather hacks on older platforms. Fixes the following Android O CTS test: dEQP-GLES31.functional.srgb_texture_decode.skip_decode.srgba8.texel_fetch Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
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.