From b365b150a1d0832da381a9693797cdc8fe39fdd5 Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Sat, 3 Jul 2010 17:18:40 +0800 Subject: [PATCH] docs: Update EGL doc. Updated for the reorganization of st/egl targets. --- docs/egl.html | 69 ++++++++++++++------------------------------------- 1 file changed, 19 insertions(+), 50 deletions(-) diff --git a/docs/egl.html b/docs/egl.html index b2198e931d0..a6cd111f875 100644 --- a/docs/egl.html +++ b/docs/egl.html @@ -32,7 +32,7 @@ cards.

the Gallium driver for your hardware. For example

-  $ ./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

The main library and OpenGL is enabled by default. The first option enables @@ -71,12 +71,12 @@ drivers will be installed to ${libdir}/egl.

  • --with-egl-platforms -

    List the native platform window system(s) to support. It is by default -x11, which supports the X Window System. Its argument is a comma -separated string like, for example, --with-egl-platforms=x11,kms. -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).

    +

    List the platforms (window systems) to support. Its argument is a comma +seprated string such as --with-egl-platforms=x11,kms. 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 EGLNativeDisplayType or +EGLNativeWindowType defined for.

    The available platforms are x11, kms, fbdev, and gdi. The gdi platform can @@ -87,9 +87,8 @@ only be built with SCons.

  • --with-state-trackers

    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 egl state tracker. They will -not be built without the egl state tracker.

    +rendering APIs, such as OpenVG, to build. But it is also used to specify +egl state tracker that egl_gallium depends on.

    • @@ -105,19 +104,10 @@ ES, this option must be explicitly given.

    Unlike --enable-gles-overlay, 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 -egl_dri2 EGL driver. +one big library that supports multiple APIs.

    -
  • --enable-gallium-swrast - -

    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.

    - -

    • Use EGL

    @@ -153,12 +143,10 @@ specific driver. This variable is ignored for setuid/setgid binaries.

  • EGL_PLATFORM -

    When EGL_DRIVER is not set, the main library loads all -EGL drivers that support a certain window system. EGL_PLATFORM -can be used to specify the window system and the valid values are, for example, -x11 or kms. When the variable is not set, the main -library defaults the value to the first window system listed in ---with-egl-platforms at configuration time. +

    This variable specifies the native platform. The valid values are the same +as those for --with-egl-platforms. When the variable is not set, +the main library uses the first platform listed in +--with-egl-platforms as the native platform

    • @@ -180,31 +168,15 @@ variable to true forces the use of software rendering.

    EGL Drivers

    -

    There are two categories of EGL drivers: Gallium and classic.

    - -

    Gallium EGL drivers supports all rendering APIs specified in EGL 1.4. These -drivers depend on the egl state tracker to build. The available -drivers are

    - +
  • egl_gallium -

    <dpy> is given by --with-egl-platforms 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.

    +

    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.

    -

    Classic EGL drivers, on the other hand, support only a subset of the -available rendering APIs. They can be found under -src/egl/drivers/. There are 3 of them

    +
    • - -

    To use the classic drivers, one must manually set EGL_DRIVER at -runtime.

    -

    Developers

    The sources of the main library and the classic drivers can be found at -- 2.30.2