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| author | marha <marha@users.sourceforge.net> | 2011-02-20 12:29:25 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2011-02-20 12:29:25 +0000 |
| commit | 8a191c08ddda2e66fa26f148d6c21959bb08f923 (patch) | |
| tree | 78c31efc6a4cbb138fd32d2a866c94b72b004343 /mesalib/docs/envvars.html | |
| parent | 48d0dcbd5b7f80810ce259bc9ed6f57f99e27ca9 (diff) | |
| download | vcxsrv-8a191c08ddda2e66fa26f148d6c21959bb08f923.tar.gz vcxsrv-8a191c08ddda2e66fa26f148d6c21959bb08f923.tar.bz2 vcxsrv-8a191c08ddda2e66fa26f148d6c21959bb08f923.zip | |
xserver xkeyboard-config libX11 pixman mesa git update 2011
Diffstat (limited to 'mesalib/docs/envvars.html')
| -rw-r--r-- | mesalib/docs/envvars.html | 233 |
1 files changed, 155 insertions, 78 deletions
diff --git a/mesalib/docs/envvars.html b/mesalib/docs/envvars.html index fd1700a02..5240c803f 100644 --- a/mesalib/docs/envvars.html +++ b/mesalib/docs/envvars.html @@ -1,78 +1,155 @@ -<HTML> - -<TITLE>Environment Variables</TITLE> - -<link rel="stylesheet" type="text/css" href="mesa.css"></head> - -<BODY> - -<H1>Environment Variables</H1> - -<p> -Mesa supports the following environment variables: -</p> -<ul> -<li>MESA_NO_ASM - if set, disables all assembly language optimizations -<li>MESA_NO_MMX - if set, disables Intel MMX optimizations -<li>MESA_NO_3DNOW - if set, disables AMD 3DNow! optimizations -<li>MESA_NO_SSE - if set, disables Intel SSE optimizations -<li>MESA_DEBUG - if set, error messages are printed to stderr. -If the value of MESA_DEBUG is "FP" floating point arithmetic errors will -generate exceptions. -<li>MESA_NO_DITHER - if set, disables dithering, overriding glEnable(GL_DITHER) -<li>MESA_TEX_PROG - if set, implement conventional texture env modes with -fragment programs (intended for developers only) -<li>MESA_TNL_PROG - if set, implement conventional vertex transformation -operations with vertex programs (intended for developers only). -Setting this variable automatically sets the MESA_TEX_PROG variable as well. -<li>MESA_EXTENSION_OVERRIDE - can be used to enable/disable extensions. -A value such as "GL_EXT_foo -GL_EXT_bar" will enable the GL_EXT_foo extension -and disable the GL_EXT_bar extension. -<li>MESA_GLSL - <a href="shading.html#envvars">shading language options</a> -</ul> - -<p> -The following are only applicable to the Xlib software driver. -See the <A HREF="xlibdriver.html">Xlib software driver page</A> for details. -</p> -<ul> -<li>MESA_RGB_VISUAL - specifies the X visual and depth for RGB mode -<li>MESA_CI_VISUAL - specifies the X visual and depth for CI mode -<li>MESA_BACK_BUFFER - specifies how to implement the back color buffer, - either "pixmap" or "ximage" -<li>MESA_GAMMA - gamma correction coefficients for red, green, blue channels -<li>MESA_XSYNC - enable synchronous X behavior (for debugging only) -<li>MESA_GLX_FORCE_CI - if set, force GLX to treat 8bpp visuals as CI visuals -<li>MESA_GLX_FX - set to either "fullscreen" for full-screen rendering, - "window" to render into a window, or "disable" to disable the Glide driver. -<li>MESA_GLX_FORCE_ALPHA - if set, forces RGB windows to have an alpha channel. -<li>MESA_GLX_DEPTH_BITS - specifies default number of bits for depth buffer. -<li>MESA_GLX_ALPHA_BITS - specifies default number of bits for alpha channel. -</ul> - - -<p> -These environment variables are for the Intel i945/i965 drivers: -</p> -<ul> -<li>INTEL_STRICT_CONFORMANCE - if set to 1, enable sw fallbacks to improve - OpenGL conformance. If set to 2, always use software rendering. -<li>INTEL_NO_BLIT - if set, disable hardware-accelerated glBitmap, - glCopyPixels, glDrawPixels. -</ul> - - -<p> -These environment variables are for the Radeon R300 driver: -</p> -<ul> -<li>R300_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting. -</ul> - -<p> -Mesa EGL supports different sets of environment variables. See the -<a href="egl.html">Mesa EGL</a> page for the details. -</p> - -</BODY> -</HTML> +<HTML>
+
+<TITLE>Environment Variables</TITLE>
+
+<link rel="stylesheet" type="text/css" href="mesa.css"></head>
+
+<BODY>
+
+<H1>Environment Variables</H1>
+
+<p>
+Normally, no environment variables need to be set. Most of the environment
+variables used by Mesa/Gallium are for debugging purposes, but they can
+sometimes be useful for debugging end-user issues.
+</p>
+
+
+<H2>LibGL environment variables</H2>
+
+<ul>
+<li>LIBGL_DEBUG - If defined debug information will be printed to stderr.
+ If set to 'verbose' additional information will be printed.
+<li>LIBGL_DRIVERS_PATH - colon-separated list of paths to search for DRI drivers
+<li>LIBGL_ALWAYS_INDIRECT - forces an indirect rendering context/connection.
+<li>LIBGL_ALWAYS_SOFTWARE - if set, always use software rendering
+<li>LIBGL_NO_DRAWARRAYS - if set do not use DrawArrays GLX protocol (for debugging)
+</ul>
+
+
+
+<H2>Core Mesa environment variables</H2>
+
+<ul>
+<li>MESA_NO_ASM - if set, disables all assembly language optimizations
+<li>MESA_NO_MMX - if set, disables Intel MMX optimizations
+<li>MESA_NO_3DNOW - if set, disables AMD 3DNow! optimizations
+<li>MESA_NO_SSE - if set, disables Intel SSE optimizations
+<li>MESA_DEBUG - if set, error messages are printed to stderr. For example,
+ if the application generates a GL_INVALID_ENUM error, a corresponding error
+ message indicating where the error occured, and possibly why, will be
+ printed to stderr.<br>
+ If the value of MESA_DEBUG is 'FP' floating point arithmetic errors will
+ generate exceptions.
+<li>MESA_TEX_PROG - if set, implement conventional texture env modes with
+fragment programs (intended for developers only)
+<li>MESA_TNL_PROG - if set, implement conventional vertex transformation
+operations with vertex programs (intended for developers only).
+Setting this variable automatically sets the MESA_TEX_PROG variable as well.
+<li>MESA_EXTENSION_OVERRIDE - can be used to enable/disable extensions.
+A value such as "GL_EXT_foo -GL_EXT_bar" will enable the GL_EXT_foo extension
+and disable the GL_EXT_bar extension.
+<li>MESA_GLSL - <a href="shading.html#envvars">shading language compiler options</a>
+</ul>
+
+
+<H2>Mesa Xlib driver environment variables</H2>
+
+<p>
+The following are only applicable to the Mesa Xlib software driver.
+See the <A HREF="xlibdriver.html">Xlib software driver page</A> for details.
+</p>
+<ul>
+<li>MESA_RGB_VISUAL - specifies the X visual and depth for RGB mode
+<li>MESA_CI_VISUAL - specifies the X visual and depth for CI mode
+<li>MESA_BACK_BUFFER - specifies how to implement the back color buffer,
+ either "pixmap" or "ximage"
+<li>MESA_GAMMA - gamma correction coefficients for red, green, blue channels
+<li>MESA_XSYNC - enable synchronous X behavior (for debugging only)
+<li>MESA_GLX_FORCE_CI - if set, force GLX to treat 8bpp visuals as CI visuals
+<li>MESA_GLX_FX - set to either "fullscreen" for full-screen rendering,
+ "window" to render into a window, or "disable" to disable the Glide driver.
+<li>MESA_GLX_FORCE_ALPHA - if set, forces RGB windows to have an alpha channel.
+<li>MESA_GLX_DEPTH_BITS - specifies default number of bits for depth buffer.
+<li>MESA_GLX_ALPHA_BITS - specifies default number of bits for alpha channel.
+</ul>
+
+
+<h2>i945/i965 driver environment variables (non-Gallium)</h2>
+
+<ul>
+<li>INTEL_STRICT_CONFORMANCE - if set to 1, enable sw fallbacks to improve
+ OpenGL conformance. If set to 2, always use software rendering.
+<li>INTEL_NO_BLIT - if set, disable hardware-accelerated glBitmap,
+ glCopyPixels, glDrawPixels.
+</ul>
+
+
+<h2>Radeon R300 driver environment variables (non-Gallium)</h2>
+
+<ul>
+<li>R300_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting.
+</ul>
+
+
+<h2>EGL environment variables</h2>
+
+<p>
+Mesa EGL supports different sets of environment variables. See the
+<a href="egl.html">Mesa EGL</a> page for the details.
+</p>
+
+
+<h2>Gallium environment variables</h2>
+
+<ul>
+<li>GALLIUM_PRINT_OPTIONS - if non-zero, print all the Gallium environment
+ variables which are used, and their current values.
+<li>GALLIUM_NOSSE - if non-zero, do not use SSE runtime code generation for
+ shader execution
+<li>GALLIUM_NOPPC - if non-zero, do not use PPC runtime code generation for
+ shader execution
+<li>GALLIUM_DUMP_CPU - if non-zero, print information about the CPU on start-up
+<li>TGSI_PRINT_SANITY - if set, do extra sanity checking on TGSI shaders and
+ print any errors to stderr.
+<LI>DRAW_FSE - ???
+<LI>DRAW_NO_FSE - ???
+<li>DRAW_USE_LLVM - if set to zero, the draw module will not use LLVM to execute
+ shaders, vertex fetch, etc.
+</ul>
+
+<h3>Softpipe driver environment variables</h3>
+<ul>
+<li>SOFTPIPE_DUMP_FS - if set, the softpipe driver will print fragment shaders
+ to stderr
+<li>SOFTPIPE_DUMP_GS - if set, the softpipe driver will print geometry shaders
+ to stderr
+<li>SOFTPIPE_NO_RAST - if set, rasterization is no-op'd. For profiling purposes.
+</ul>
+
+
+<h3>LLVMpipe driver environment variables</h3>
+<ul>
+<li>LP_NO_RAST - if set LLVMpipe will no-op rasterization
+<li>LP_DEBUG - a comma-separated list of debug options is acceptec. See the
+ source code for details.
+<li>LP_PERF - a comma-separated list of options to selectively no-op various
+ parts of the driver. See the source code for details.
+<li>LP_NUM_THREADS - an integer indicating how many threads to use for rendering.
+ Zero turns of threading completely. The default value is the number of CPU
+ cores present.
+</ul>
+
+
+<p>
+Other Gallium drivers have their own environment variables. These may change
+frequently so the source code should be consulted for details.
+</p>
+
+
+<br>
+<br>
+
+
+</BODY>
+</HTML>
|