Iago Toral Quiroga
b298311d51
We only consider a vgrf defined by a given block if the block writes to it unconditionally. So far we have been checking this by testing that the instruction is not predicated, however, in the case of BRW_OPCODE_SEL, the predication is used to select the value to write, not to decide if the write is actually done. The consequence of this was increased life spans for affected vgrfs, which could lead to additional register pressure. Since NIR generates selects for conditional writes this was causing massive register pressure in a handful of piglit and dEQP tests that had a large number of select operations with the NIR-vec4 backend. Fixes the following piglit tests with the NIR-vec4 backend: spec/glsl-1.50/execution/variable-indexing/vs-output-array-vec4-index-wr-before-gs spec/glsl-1.50/execution/variable-indexing/gs-input-array-vec4-index-rd spec/glsl-1.50/execution/variable-indexing/vs-output-array-vec2-index-wr-before-gs spec/glsl-1.50/execution/variable-indexing/vs-output-array-vec3-index-wr-before-gs spec/glsl-1.50/execution/variable-indexing/vs-output-array-float-index-wr-before-gs Fixes 80 dEQP tests with the NIR-vec4 backend in the following category: dEQP-GLES3.functional.ubo.* Reviewed-by: Francisco Jerez <currojerez@riseup.net> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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.