Eric Anholt
cc4ddc3a1e
A driver trying to set up builtin uniforms is faced with a problem: How do I walk the ir_variable structure (representing an array of structs, or array of matrices, or struct, or whatever), and set up driver structures so that dereference of that uniform gets the corresponding ParameterValues[] entry. The rule in general is that each corresponding vector-sized field of an array of structs is one builtin uniform state slot. i965 relied on another invariant: each state slot has a number of unique channel swizzles corresponding to the number of elements in the field's vector, to avoid needing to walk the glsl_type in parallel to get at vector_elements. All of the builtin uniforms followed this behavior, except for gl_NormalMatrix. That's a mat3 (so 3 vec3s), but it was swizzled as 3 vec4s. Fixes piglit glsl-fs-normalmatrix. Reviewed-by: Paul Berry <stereotype441@gmail.com>
File: docs/README.WIN32 Last updated: 23 April 2011 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons osmesa mesagdi to build classic mesa Windows GDI drivers; or 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. 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.