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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/egl.html | 69 |
1 files changed, 19 insertions, 50 deletions
diff --git a/docs/egl.html b/docs/egl.html index b2198e931d..a6cd111f87 100644 --- a/docs/egl.html +++ b/docs/egl.html @@ -32,7 +32,7 @@ cards.</p> the Gallium driver for your hardware. For example</p> <pre> - $ ./configure --enable-gles-overlay --with-state-trackers=egl,vega --enable-gallium-{swrast,intel} + $ ./configure --enable-gles-overlay --with-state-trackers=egl,vega --enable-gallium-intel </pre> <p>The main library and OpenGL is enabled by default. The first option enables @@ -71,12 +71,12 @@ drivers will be installed to <code>${libdir}/egl</code>.</p> <li><code>--with-egl-platforms</code> -<p>List the native platform window system(s) to support. It is by default -<code>x11</code>, which supports the X Window System. Its argument is a comma -separated string like, for example, <code>--with-egl-platforms=x11,kms</code>. -Because an EGL driver decides which window system to support, this example will -enable two (sets of) EGL drivers. One supports the X window system and the -other supports bare KMS (kernel modesetting).</p> +<p>List the platforms (window systems) to support. Its argument is a comma +seprated string such as <code>--with-egl-platforms=x11,kms</code>. It decides +the platforms a driver may support. The first listed platform is also used by +the main library to decide the native platform: the platform the EGL native +types such as <code>EGLNativeDisplayType</code> or +<code>EGLNativeWindowType</code> defined for.</p> <p>The available platforms are <code>x11</code>, <code>kms</code>, <code>fbdev</code>, and <code>gdi</code>. The <code>gdi</code> platform can @@ -87,9 +87,8 @@ only be built with SCons.</p> <li><code>--with-state-trackers</code> <p>The argument is a comma separated string. It is usually used to specify the -rendering APIs, such as OpenVG, to build. But it should be noted that a number -of EGL drivers depend on the <code>egl</code> state tracker. They will -<em>not</em> be built without the <code>egl</code> state tracker.</p> +rendering APIs, such as OpenVG, to build. But it is also used to specify +<code>egl</code> state tracker that <code>egl_gallium</code> depends on.</p> </li> @@ -105,19 +104,10 @@ ES, this option must be explicitly given.</p> <p>Unlike <code>--enable-gles-overlay</code>, which builds one library for each rendering API, these options enable OpenGL ES support in OpenGL. The result is -one big library that supports multiple APIs. This is used by DRI drivers and -<code>egl_dri2</code> EGL driver. +one big library that supports multiple APIs.</p> </li> -<li><code>--enable-gallium-swrast</code> - -<p>This option is not specific to EGL. But if there is no driver for your -hardware, or you are experiencing problems with the hardware driver, you can -enable the swrast DRM driver. It is a dummy driver and EGL will fallback to -software rendering automatically.</p> - -</li> </ul> <h2>Use EGL</h2> @@ -153,12 +143,10 @@ specific driver. This variable is ignored for setuid/setgid binaries.</p> <li><code>EGL_PLATFORM</code> -<p>When <code>EGL_DRIVER</code> is not set, the main library loads <em>all</em> -EGL drivers that support a certain window system. <code>EGL_PLATFORM</code> -can be used to specify the window system and the valid values are, for example, -<code>x11</code> or <code>kms</code>. When the variable is not set, the main -library defaults the value to the first window system listed in -<code>--with-egl-platforms</code> at configuration time. +<p>This variable specifies the native platform. The valid values are the same +as those for <code>--with-egl-platforms</code>. When the variable is not set, +the main library uses the first platform listed in +<code>--with-egl-platforms</code> as the native platform</p> </li> @@ -180,31 +168,15 @@ variable to true forces the use of software rendering.</p> <h2>EGL Drivers</h2> -<p>There are two categories of EGL drivers: Gallium and classic.</p> - -<p>Gallium EGL drivers supports all rendering APIs specified in EGL 1.4. These -drivers depend on the <code>egl</code> state tracker to build. The available -drivers are</p> - <ul> -<li><code>egl_<dpy>_i915</code></li> -<li><code>egl_<dpy>_i965</code></li> -<li><code>egl_<dpy>_nouveau</code></li> -<li><code>egl_<dpy>_radeon</code></li> -<li><code>egl_<dpy>_swrast</code></li> -<li><code>egl_<dpy>_vmwgfx</code></li> -</ul> +<li><code>egl_gallium</code> -<p><code><dpy></code> is given by <code>--with-egl-platforms</code> at -configuration time. There is usually one EGL driver for each combination of -the platforms listed and the pipe drivers enabled. When the platform is pure -software or pure hardware, non-working combinations will not be built.</p> +<p>This driver is based on Gallium3D. It supports all rendering APIs and +hardwares supported by Gallium3D. It is the only driver that supports OpenVG. +The supported platforms are X11, KMS, FBDEV, and GDI.</p> -<p>Classic EGL drivers, on the other hand, support only a subset of the -available rendering APIs. They can be found under -<code>src/egl/drivers/</code>. There are 3 of them</p> +</li> -<ul> <li><code>egl_glx</code> <p>This driver provides a wrapper to GLX. It uses exclusively GLX to implement @@ -231,9 +203,6 @@ are phasing out, it might eventually be replaced by <code>egl_dri2</code>.</p> </li> </ul> -<p>To use the classic drivers, one must manually set <code>EGL_DRIVER</code> at -runtime.</p> - <h2>Developers</h2> <p>The sources of the main library and the classic drivers can be found at |