<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_NO_ERROR - if set error checking is disabled as per KHR_no_error.
+ This will result in undefined behaviour for invalid use of the api, but
+ can reduce CPU use for apps that are known to be error free.</li>
<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 occurred, and possibly why, will be
glGetString(GL_SHADING_LANGUAGE_VERSION). Valid values are integers, such as
"130". Mesa will not really implement all the features of the given language version
if it's higher than what's normally reported. (for developers only)
+<li>MESA_GLSL_CACHE_DISABLE - if set, disables the GLSL shader cache
+<li>MESA_GLSL_CACHE_MAX_SIZE - if set, determines the maximum size of
+the on-disk cache of compiled GLSL programs. Should be set to a number
+optionally followed by 'K', 'M', or 'G' to specify a size in
+kilobytes, megabytes, or gigabytes. By default, gigabytes will be
+assumed. And if unset, a maximum size of 1GB will be used. Note: A separate
+cache might be created for each architecture that Mesa is installed for on
+your system. For example under the default settings you may end up with a 1GB
+cache for x86_64 and another 1GB cache for i386.
+<li>MESA_GLSL_CACHE_DIR - if set, determines the directory to be used
+for the on-disk cache of compiled GLSL programs. If this variable is
+not set, then the cache will be stored in $XDG_CACHE_HOME/mesa (if
+that variable is set), or else within .cache/mesa within the user's
+home directory.
<li>MESA_GLSL - <a href="shading.html#envvars">shading language compiler options</a>
<li>MESA_NO_MINMAX_CACHE - when set, the minmax index cache is globally disabled.
</ul>
This is useful for debugging hangs, etc.</li>
<li>INTEL_DEBUG - a comma-separated list of named flags, which do various things:
<ul>
- <li>tex - emit messages about textures.</li>
- <li>state - emit messages about state flag tracking</li>
- <li>blit - emit messages about blit operations</li>
- <li>miptree - emit messages about miptrees</li>
- <li>perf - emit messages about performance issues</li>
- <li>perfmon - emit messages about AMD_performance_monitor</li>
+ <li>ann - annotate IR in assembly dumps</li>
+ <li>aub - dump batches into an AUB trace for use with simulation tools</li>
<li>bat - emit batch information</li>
- <li>pix - emit messages about pixel operations</li>
+ <li>blit - emit messages about blit operations</li>
+ <li>blorp - emit messages about the blorp operations (blits & clears)</li>
<li>buf - emit messages about buffer objects</li>
+ <li>clip - emit messages about the clip unit (for old gens, includes the CLIP program)</li>
+ <li>color - use color in output</li>
+ <li>cs - dump shader assembly for compute shaders</li>
+ <li>do32 - generate compute shader SIMD32 programs even if workgroup size doesn't exceed the SIMD16 limit</li>
+ <li>dri - emit messages about the DRI interface</li>
<li>fbo - emit messages about framebuffers</li>
<li>fs - dump shader assembly for fragment shaders</li>
<li>gs - dump shader assembly for geometry shaders</li>
- <li>sync - after sending each batch, emit a message and wait for that batch to finish rendering</li>
- <li>prim - emit messages about drawing primitives</li>
- <li>vert - emit messages about vertex assembly</li>
- <li>dri - emit messages about the DRI interface</li>
- <li>sf - emit messages about the strips & fans unit (for old gens, includes the SF program)</li>
- <li>stats - enable statistics counters. you probably actually want perfmon or intel_gpu_top instead.</li>
- <li>urb - emit messages about URB setup</li>
- <li>vs - dump shader assembly for vertex shaders</li>
- <li>clip - emit messages about the clip unit (for old gens, includes the CLIP program)</li>
- <li>aub - dump batches into an AUB trace for use with simulation tools</li>
- <li>shader_time - record how much GPU time is spent in each shader</li>
+ <li>hex - print instruction hex dump with the disassembly</li>
+ <li>l3 - emit messages about the new L3 state during transitions</li>
+ <li>miptree - emit messages about miptrees</li>
+ <li>no8 - don't generate SIMD8 fragment shader</li>
<li>no16 - suppress generation of 16-wide fragment shaders. useful for debugging broken shaders</li>
- <li>blorp - emit messages about the blorp operations (blits & clears)</li>
+ <li>nocompact - disable instruction compaction</li>
<li>nodualobj - suppress generation of dual-object geometry shader code</li>
+ <li>norbc - disable single sampled render buffer compression</li>
<li>optimizer - dump shader assembly to files at each optimization pass and iteration that make progress</li>
- <li>ann - annotate IR in assembly dumps</li>
- <li>no8 - don't generate SIMD8 fragment shader</li>
- <li>vec4 - force vec4 mode in vertex shader</li>
+ <li>perf - emit messages about performance issues</li>
+ <li>perfmon - emit messages about AMD_performance_monitor</li>
+ <li>pix - emit messages about pixel operations</li>
+ <li>prim - emit messages about drawing primitives</li>
+ <li>sf - emit messages about the strips & fans unit (for old gens, includes the SF program)</li>
+ <li>shader_time - record how much GPU time is spent in each shader</li>
<li>spill_fs - force spilling of all registers in the scalar backend (useful to debug spilling code)</li>
<li>spill_vec4 - force spilling of all registers in the vec4 backend (useful to debug spilling code)</li>
- <li>cs - dump shader assembly for compute shaders</li>
- <li>hex - print instruction hex dump with the disassembly</li>
- <li>nocompact - disable instruction compaction</li>
+ <li>state - emit messages about state flag tracking</li>
+ <li>sync - after sending each batch, emit a message and wait for that batch to finish rendering</li>
<li>tcs - dump shader assembly for tessellation control shaders</li>
<li>tes - dump shader assembly for tessellation evaluation shaders</li>
- <li>l3 - emit messages about the new L3 state during transitions</li>
- <li>do32 - generate compute shader SIMD32 programs even if workgroup size doesn't exceed the SIMD16 limit</li>
- <li>norbc - disable single sampled render buffer compression</li>
+ <li>tex - emit messages about textures.</li>
+ <li>urb - emit messages about URB setup</li>
+ <li>vert - emit messages about vertex assembly</li>
+ <li>vs - dump shader assembly for vertex shaders</li>
</ul>
+<li>INTEL_SCALAR_VS (or TCS, TES, GS) - force scalar/vec4 mode for a shader stage (Gen8-9 only)</li>
+<li>INTEL_PRECISE_TRIG - if set to 1, true or yes, then the driver prefers
+ accuracy over performance in trig functions.</li>
</ul>
disable for unencumbered viewing the rest of the time. For example, set
GALLIUM_HUD_VISIBLE to false and GALLIUM_HUD_TOGGLE_SIGNAL to 10 (SIGUSR1).
Use kill -10 <pid> to toggle the hud as desired.
+<li>GALLIUM_HUD_DUMP_DIR - specifies a directory for writing the displayed
+ hud values into files.
<li>GALLIUM_DRIVER - useful in combination with LIBGL_ALWAYS_SOFTWARE=1 for
choosing one of the software renderers "softpipe", "llvmpipe" or "swr".
<li>GALLIUM_LOG_FILE - specifies a file for logging all errors, warnings, etc.
(will often result in incorrect rendering).
<li>SVGA_DEBUG - for dumping shaders, constant buffers, etc. See the code
for details.
+<li>SVGA_EXTRA_LOGGING - if set, enables extra logging to the vmware.log file,
+such as the OpenGL program's name and command line arguments.
<li>See the driver code for other, lesser-used variables.
</ul>
projects / mesa.git / blobdiff