bf7b6262f6
From: "Mike Gorchak" Subject: QNX fixes improved sound code for the QNX, added workarounds for known bugs, fixed photon detect code. Update .qpg file. --HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40719
109 lines
4.8 KiB
Text
109 lines
4.8 KiB
Text
README by Mike Gorchak <mike@malva.ua>, <lestat@i.com.ua>
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Last changed at 12 Aug 2003.
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======================================================================
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OpenGL:
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OpenGL works well and is stable, but fullscreen mode has not been
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heavily tested yet.
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If you have QNX RtP version 6.1.0 or above you must download the
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Photon3D runtime from http://developers.qnx.com or install it from the
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public repository or the public CD, available with QNX. OS versions
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below 6.1.0 are not supported.
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When creating an OpenGL context, software renderer mode is artifi-
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cially selected (QSSL made acceleration only for Voodoo boards in
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fullscreen mode, sorry but I don't have this board to test OpenGL -
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maybe it works or maybe not :)). If you want acceleration - you can
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remove one line in the source code: find the file SDL_ph_video.c and
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remove the following
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OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FORCE_SW;
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line in the ph_SetupOpenGLContext() function or change the argument to
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PHOGL_ATTRIB_FORCE_HW or PHOGL_ATTRIB_FAVOR_HW.
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======================================================================
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Wheel and multi-button mouses:
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Photon emits keyboard events (key up and down) when the mouse
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wheel is moved. The key_scan field appears valid, and it contains zero.
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That is a basic method of detecting mouse wheel events under Photon.
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It looks like a hack, but it works for me :) on various PC configura-
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tions.
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I've tested it on:
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1. Genius Optical NetScroll/+ (1 wheel)
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2. A4Tech Optical GreatEye WheelMouse, model: WOP-35. (2 wheels + 2
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additional buttons). The wheel for vertical scrolling works as usu-
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al, but the second wheel for horizontal scrolling emits two sequen-
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tial events up or down, so it can provide faster scrolling than the
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first wheel. Additional buttons don't emit any events, but it looks
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like they're handled by photon in an unusual way - like click to
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front, but works not with any window, looks like bug-o-feature :).
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======================================================================
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CDROM handling issues:
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Access to CDROM can only be provided with 'root' privileges. I
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can't do anything about that, /dev/cd0 has brw------- permissions and
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root:root rights.
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======================================================================
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Video Overlays:
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Overlays can flicker during window movement, resizing, etc. It
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happens because the photon driver updates the real window contents be-
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hind the overlay, then draws the temporary chroma key color over the
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window contents. It can be done without using the chroma key but that
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causes the overlay to always be on top. So flickering during window
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movement is preferred instead.
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Double buffering code is temporarily disabled in the photon driver
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code, because on my GF2-MX it can accidentally cause a buffer switch,
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which causes the old frame to show. S3 Savage4 has the same problem,
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but ATI Rage 128 doesn't. I think it can be fixed later. Current code
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works very well, so maybe double buffering is not needed right now.
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Something strange happens when you try to move the window with the
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overlay beyond the left border of the screen. The overlay tries to
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stay at position x=0, but when attempting to move it a bit more it
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jumps to position x=-60 (on GF2-MX, on ATI Rage128 this value a bit
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smaller). It's really strange, looks like the overlay doesn't like
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negative coordinates.
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=======================================================================
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Shared library building:
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A shared library can be built, but before running the autogen.sh
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script you must manually delete the libtool.m4 stuff from the acinclu-
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de.m4 file (it comes after the ESD detection code up to the end of the
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file), because the libtool stuff in the acinclude.m4 file is very old
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and doesn't know anything about QNX. Just remove it, then run
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"libtoolize --force --copy" and after that run the autogen.sh script.
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======================================================================
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Some building issues:
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Feel free to not use the --disable-shared configure option if you'
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ve read the above comment about 'Shared library building'. Otherwise
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this option is strongly recommended, as without it the sdl-config
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script will be broken.
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Run the configure script without x11 support, e.g.:
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a) for OpenGL support:
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./configure --prefix=/usr \
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--disable-video-x11 \
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--disable-shared
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b) without OpenGL support:
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./configure --prefix=/usr \
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--disable-video-x11 \
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--disable-shared \
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--disable-video-opengl
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In the test directory also run the ./configure script without
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x11 support, e.g.:
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./configure --with-sdl-prefix=/usr \
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--with-sdl-exec-prefix=/usr \
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--prefix=/usr --without-x
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