diff options
author | marha <marha@users.sourceforge.net> | 2011-09-12 11:27:51 +0200 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2011-09-12 11:27:51 +0200 |
commit | dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0 (patch) | |
tree | bdf833cc6a4fc9035411779e10dd9e8478201885 /mesalib/docs/envvars.html | |
parent | 0b40f5f4b54453a77f4b09c431f8efc6875da61f (diff) | |
download | vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.tar.gz vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.tar.bz2 vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.zip |
Synchronised line endinge with release branch
Diffstat (limited to 'mesalib/docs/envvars.html')
-rw-r--r-- | mesalib/docs/envvars.html | 328 |
1 files changed, 164 insertions, 164 deletions
diff --git a/mesalib/docs/envvars.html b/mesalib/docs/envvars.html index c710bca51..986d2f8eb 100644 --- a/mesalib/docs/envvars.html +++ b/mesalib/docs/envvars.html @@ -1,164 +1,164 @@ -<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_EXTENSION_MAX_YEAR - The GL_EXTENSIONS string returned by Mesa is sorted
-by extension year.
-If this variable is set to year X, only extensions defined on or before year
-X will be reported.
-This is to work-around a bug in some games where the extension string is
-copied into a fixed-size buffer without truncating.
-If the extension string is too long, the buffer overrun can cause the game
-to crash.
-This is a work-around for that.
-<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>
+<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_EXTENSION_MAX_YEAR - The GL_EXTENSIONS string returned by Mesa is sorted +by extension year. +If this variable is set to year X, only extensions defined on or before year +X will be reported. +This is to work-around a bug in some games where the extension string is +copied into a fixed-size buffer without truncating. +If the extension string is too long, the buffer overrun can cause the game +to crash. +This is a work-around for that. +<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> |