Francisco Jerez
9383664a9c
This fixes essentially the same problem as for immediates. Registers
of the UNIFORM file are typically accessed according to the formula:
read_uniform(r, channel_index, array_index) =
read_element(r, channel_index * 0 + array_index * 1)
Which matches the general direct addressing formula for stride=0:
read_direct(r, channel_index, array_index) =
read_element(r, channel_index * stride +
array_index * max{1, stride * width})
In either case if reladdr is present the access will be according to
the composition of two register regions, the first one determining the
per-channel array_index used for the second, like:
read_indirect(r, channel_index, array_index) =
read_direct(r, channel_index,
read(r.reladdr, channel_index, array_index))
where:
read(r, channel_index, array_index) = if r.reladdr == NULL
then read_direct(r, channel_index, array_index)
else read_indirect(r, channel_index, array_index)
In conclusion we can handle uniforms consistently with the other
register files if we set stride to zero. After lowering to a GRF
using VARYING_PULL_CONSTANT_LOAD in demote_pull_constant_loads() the
stride of the source is set to one again because the result of
VARYING_PULL_CONSTANT_LOAD is generally non-uniform.
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.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.