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eddea78fb3
A simple shader such as
vec4 color;
color.xy.x = 1.0;
would cause ir_assignment::set_lhs() to generate bogus IR:
(swiz xy (swiz x (constant float (1.0))))
We were setting the number of components of each new RHS swizzle based
on the highest channel used in the LHS swizzle. So, .xy.y would
generate (swiz xy (swiz xx ...)), while .xy.x would break.
Our existing Piglit test happened to use .xzy.z, which worked, since
'z' is the third component, resulting in an xxx swizzle.
This patch sets the number of swizzle components based on the size of
the LHS swizzle's inner value, so we always have the correct number
at each step.
Fixes new Piglit tests glsl-vs-swizzle-swizzle-lhs-[23].
Fixes ir_validate assertions in in Metro 2033 Redux.
v2: Move num_components updating completely out of update_rhs_swizzle
(suggested by Timothy Arceri). Simplify.
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <t_arceri@yahoo.com.au>
(cherry picked from commit
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| m4 | ||
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| src | ||
| .dir-locals.el | ||
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| .gitignore | ||
| Android.common.mk | ||
| Android.mk | ||
| autogen.sh | ||
| CleanSpec.mk | ||
| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
| install-lib-links.mk | ||
| Makefile.am | ||
| SConstruct | ||
| VERSION | ||
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.