Mesa Frequently Asked Questions

Frequently Asked Questions

Last updated: 19 September 2018
@@ -29,11 +29,9 @@ Last updated: 19 September 2018

+

1. High-level Questions and Answers

- -

1. High-level Questions and Answers

- -

1.1 What is Mesa?

Mesa is an open-source implementation of the OpenGL specification. OpenGL is a programming library for writing interactive 3D applications. @@ -180,17 +178,17 @@ popular and feature-complete.
-

2. Compilation and Installation Problems

2.1 What's the easiest way to install Mesa?

If you're using a Linux-based system, your distro CD most likely already has Mesa packages (like RPM or DEB) which you can easily install.

2.2 I get undefined symbols such as bgnpolygon, v3f, etc...

You're application is written in IRIS GL, not OpenGL. IRIS GL was the predecessor to OpenGL and is a different thing (almost) @@ -199,7 +197,7 @@ Mesa's not the solution.

2.3 Where is the GLUT library?

GLUT (OpenGL Utility Toolkit) is no longer in the separate MesaGLUT-x.y.z.tar.gz file. If you don't already have GLUT installed, you should grab @@ -207,7 +205,7 @@ If you don't already have GLUT installed, you should grab

2.4 Where is the GLw library?

GLw (OpenGL widget library) is now available from a separate git repository. Unless you're using very old Xt/Motif applications with OpenGL, you shouldn't need it.

@@ -253,9 +251,9 @@ and then install with sudo ninja install.
-

3. Runtime / Rendering Problems

3.1 Rendering is slow / why isn't my graphics hardware being used?

If Mesa can't use its hardware accelerated drivers it falls back on one of its software renderers. (eg. classic swrast, softpipe or llvmpipe) @@ -276,7 +274,7 @@ If your DRI-based driver isn't working, go to the

3.2 I'm seeing errors in depth (Z) buffering. Why?

Make sure the ratio of the far to near clipping planes isn't too great. Look @@ -291,7 +289,7 @@ If you need a deeper you can modify the parameters to

3.3 Why Isn't depth buffering working at all?

Be sure you're requesting a depth buffered-visual. If you set the MESA_DEBUG environment variable it will warn you about trying to enable depth testing @@ -306,14 +304,14 @@ alpha channels too.

3.4 Why does glGetString() always return NULL?

Be sure you have an active/current OpenGL rendering context before calling glGetString.

3.5 GL_POINTS and GL_LINES don't touch the right pixels

If you're trying to draw a filled region by using GL_POINTS or GL_LINES and seeing holes or gaps it's because of a float-to-int rounding problem. @@ -327,9 +325,9 @@ will fix the problem.
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4. Developer Questions

4.1 How can I contribute?

First, join the mesa-dev mailing list. That's where Mesa development is discussed. @@ -343,7 +341,7 @@ You should read it. extensions, writing hardware drivers (for the DRI), and code optimization.

4.2 How do I write a new device driver?

Unfortunately, writing a device driver isn't easy. It requires detailed understanding of OpenGL, the Mesa code, and your @@ -367,7 +365,7 @@ the archives) is a good way to get information.

4.3 Why isn't GL_EXT_texture_compression_s3tc implemented in Mesa?

Oh but it is! Prior to 2nd October 2017, the Mesa project did not include s3tc support due to intellectual property (IP) and/or patent issues around the s3tc diff --git a/docs/install.html b/docs/install.html index 036e1d8..4730a0c 100644 --- a/docs/install.html +++ b/docs/install.html @@ -31,9 +31,9 @@ -

1. Prerequisites for building

1.1 General

Build system. @@ -114,7 +114,7 @@ the packaging tool used by your distro. ... # others -

2. Building with meson

Meson is the latest build system in mesa, it is currently able to build for @@ -134,7 +134,7 @@ Please read the detailed meson instructions for more information

3. Building with autoconf (Linux/Unix/X11)

Autoconf support was removed in Mesa 19.1.0. Please use meson instead. @@ -142,7 +142,7 @@ for more information -

4. Building with SCons (Windows/Linux)

To build Mesa with SCons on Linux or Windows do @@ -178,7 +178,7 @@ Additional information is available in README.WIN32. -

5. Building with AOSP (Android)

Currently one can build Mesa for Android as part of the AOSP project, yet @@ -197,7 +197,7 @@ Android-x86 and/or other resources.

6. Library Information

When compilation has finished, look in the top-level lib/ @@ -235,7 +235,7 @@ versions of libGL and device drivers.

7. Building OpenGL programs with pkg-config

Running ninja install will install package configuration files diff --git a/docs/intro.html b/docs/intro.html index be164c8..47cc698 100644 --- a/docs/intro.html +++ b/docs/intro.html @@ -2,7 +2,7 @@ - Mesa Introduction + Introduction @@ -50,7 +50,7 @@ systems. -

Project History

The Mesa project was originally started by Brian Paul. @@ -185,7 +185,7 @@ of the OpenGL, OpenGL ES and Vulkan specifications. -

Major Versions

This is a summary of the major versions of Mesa. @@ -194,7 +194,7 @@ of the OpenGL specification is implemented.

Version 12.x features

Version 12.x of Mesa implements the OpenGL 4.3 API, but not all drivers support OpenGL 4.3. @@ -204,21 +204,21 @@ Initial support for Vulkan is also included.

Version 11.x features

Version 11.x of Mesa implements the OpenGL 4.1 API, but not all drivers support OpenGL 4.1.

Version 10.x features

Version 10.x of Mesa implements the OpenGL 3.3 API, but not all drivers support OpenGL 3.3.

Version 9.x features

Version 9.x of Mesa implements the OpenGL 3.1 API. While the driver for Intel Sandy Bridge and Ivy Bridge is the only @@ -233,7 +233,7 @@ tracker for OpenCL.

Version 8.x features

Version 8.x of Mesa implements the OpenGL 3.0 API. The developers at Intel deserve a lot of credit for implementing most @@ -242,14 +242,14 @@ the i965 driver.

Version 7.x features

Version 7.x of Mesa implements the OpenGL 2.1 API. The main feature of OpenGL 2.x is the OpenGL Shading Language.

Version 6.x features

Version 6.x of Mesa implements the OpenGL 1.5 API with the following extensions incorporated as standard features: @@ -289,7 +289,7 @@ OpenGL specification for more details. -

Version 5.x features

Version 5.x of Mesa implements the OpenGL 1.4 API with the following extensions incorporated as standard features: @@ -315,7 +315,7 @@ extensions incorporated as standard features: -

Version 4.x features

Version 4.x of Mesa implements the OpenGL 1.3 API with the following @@ -334,7 +334,7 @@ extensions incorporated as standard features:

GL_ARB_transpose_matrix -

Version 3.x features

Version 3.x of Mesa implements the OpenGL 1.2 API with the following @@ -350,7 +350,7 @@ features: -

Version 2.x features

Version 2.x of Mesa implements the OpenGL 1.1 API with the following features. diff --git a/docs/license.html b/docs/license.html index 57d946c..6ba6ce9 100644 --- a/docs/license.html +++ b/docs/license.html @@ -2,7 +2,7 @@ - License / Copyright Information + License and Copyright @@ -14,7 +14,9 @@

Disclaimer

License and Copyright

+ +

Disclaimer

Mesa is a 3-D graphics library with an API which is very similar to @@ -42,7 +44,7 @@ library.
-

License / Copyright Information

The Mesa distribution consists of several components. Different copyrights @@ -82,7 +84,7 @@ SOFTWARE. -

Attention, Contributors

When contributing to the Mesa project you must agree to the licensing terms @@ -92,7 +94,7 @@ and their respective licenses.

Mesa Component Licenses

 Component         Location               License
diff --git a/docs/lists.html b/docs/lists.html
index 0b451a0..399bd33 100644
--- a/docs/lists.html
+++ b/docs/lists.html
@@ -2,7 +2,7 @@
 
 
   
-  Mesa Mailing Lists
+  Mailing Lists
   
 
 
@@ -68,14 +68,14 @@ kernels, see the
 
 
 
-IRC
+IRC
 
 join #dri-devel channel
 on irc.freenode.net
 
 
 
-OpenGL Forums
+OpenGL Forums
 
 
 Here are some other OpenGL-related forums you might find useful:
diff --git a/docs/llvmpipe.html b/docs/llvmpipe.html
index fec698f..10faaa4 100644
--- a/docs/llvmpipe.html
+++ b/docs/llvmpipe.html
@@ -2,7 +2,7 @@
 
 
   
-  llvmpipe
+  Gallium LLVMpipe Driver
   
 
 
@@ -14,7 +14,9 @@
 
 

 
-Introduction
+Gallium LLVMpipe Driver
+
+Introduction
 
 
 The Gallium llvmpipe driver is a software rasterizer that uses LLVM to
@@ -28,7 +30,7 @@ It's the fastest software rasterizer for Mesa.
 
 
 
-Requirements
+Requirements
 
 
 
@@ -112,7 +114,7 @@ It's the fastest software rasterizer for Mesa.
 
 
 
-Building
+Building
 
 To build everything on Linux invoke scons as:
 
@@ -137,9 +139,9 @@ For Windows the procedure is similar except the target:

Using

Linux

On Linux, building will create a drop-in alternative for libGL.so into

@@ -157,7 +159,7 @@ or lib directory without the "-debug" suffix.

Windows

On Windows, building will create @@ -192,7 +194,7 @@ any OpenGL drivers): -

Profiling

To profile llvmpipe you should build as @@ -206,7 +208,7 @@ This will ensure that frame pointers are used both in C and JIT functions, and that no tail call optimizations are done by gcc.

Linux perf integration

On Linux, it is possible to have symbol resolution of JIT code with Linux perf: @@ -228,7 +230,7 @@ the generated code annotated with the samples. Gprof2Dot.

Unit testing

Building will also create several unit tests in @@ -250,7 +252,7 @@ for later analysis, e.g.: -

Development Notes

@@ -272,7 +274,7 @@ for later analysis, e.g.: