Jose Maria Casanova Crespo
8dd8be0323
16-bit load_ubo/ssbo operations that call do_untyped_read_vector don't
guarantee that offsets are multiple of 4-bytes as required by untyped_read
message. This happens for example in the case of f16mat3x3 when then
VK_KHR_relaxed_block_layout is enabled.
Vectors reads when we have non-constant offsets are implemented with
multiple byte_scattered_read messages that not require 32-bit aligned offsets.
Now for all constant offsets we can use the untyped_read_surface message.
In the case of constant offsets not aligned to 32-bits, we calculate a
start offset 32-bit aligned and use the shuffle_32bit_load_result_to_16bit_data
function and the first_component parameter to skip the copy of the unneeded
component.
v2: (Jason Ekstrand)
Use untyped_read_surface messages always we have constant offsets.
v3: (Jason Ekstrand)
Simplify loop for reads with non constant offsets.
Use end - start to calculate the number of 32-bit components to read with
constant offsets.
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.