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Fixed bug 3690 - SDL2 KMS/DRM render context support

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Manuel

The attached patch adds support for KMS/DRM context graphics.

It builds with no problem on X86_64 GNU/Linux systems, provided the needed libraries are present, and on ARM GNU/Linux systems that have KMS/DRM support and a GLES2 implementation.
Tested on Raspberry Pi: KMS/DRM is what the Raspberry Pi will use as default in the near future, once the propietary DispmanX API by Broadcom is overtaken by open graphics stack, it's possible to boot current Raspbian system in KMS mode by adding "dtoverlay=vc4-kms-v3d" to config.txt on Raspbian's boot partition.
X86 systems use KMS right away in every current GNU/Linux system.

Simple build instructions:

$./autogen.sh
$./configure --enable-video-kmsdrm
$make
This commit is contained in:
Sam Lantinga
2017-08-02 10:22:48 -07:00
parent 2ffd6d0208
commit 56363ebf61
28 changed files with 2059 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
configure.in
View File

@@ -2084,6 +2084,81 @@ AC_MSG_WARN("directfb $directfb_lib")
fi
}
dnl Find KMSDRM
CheckKMSDRM()
{
AC_ARG_ENABLE(video-kmsdrm,
AC_HELP_STRING([--enable-video-kmsdrm], [use KMSDRM video driver [[default=no]]]),
, enable_video_kmsdrm=no)
if test x$enable_video = xyes -a x$enable_video_kmsdrm = xyes; then
video_kmsdrm=no
libdrm_avail=no
libgbm_avail=no
LIBDRM_REQUIRED_VERSION=2.4.46
LIBGBM_REQUIRED_VERSION=9.0.0
AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
if test x$PKG_CONFIG != xno; then
if $PKG_CONFIG --atleast-pkgconfig-version 0.7; then
if $PKG_CONFIG --atleast-version $LIBDRM_REQUIRED_VERSION libdrm; then
LIBDRM_CFLAGS=`$PKG_CONFIG --cflags libdrm`
LIBDRM_LIBS=`$PKG_CONFIG --libs libdrm`
LIBDRM_PREFIX=`$PKG_CONFIG --variable=prefix libdrm`
libdrm_avail=yes
fi
if $PKG_CONFIG --atleast-version $LIBGBM_REQUIRED_VERSION gbm; then
LIBGBM_CFLAGS=`$PKG_CONFIG --cflags gbm`
LIBGBM_LIBS=`$PKG_CONFIG --libs gbm`
LIBGBM_PREFIX=`$PKG_CONFIG --variable=prefix gbm`
libgbm_avail=yes
fi
if test x$libdrm_avail = xyes -a x$libgbm_avail = xyes; then
video_kmsdrm=yes
fi
AC_MSG_CHECKING(for libdrm $LIBDRM_REQUIRED_VERSION library for kmsdrm support)
AC_MSG_RESULT($libdrm_avail)
AC_MSG_CHECKING(for libgbm $LIBGBM_REQUIRED_VERSION library for kmsdrm support)
AC_MSG_RESULT($libgbm_avail)
if test x$video_kmsdrm = xyes; then
AC_ARG_ENABLE(kmsdrm-shared,
AC_HELP_STRING([--enable-kmsdrm-shared], [dynamically load kmsdrm support [[default=yes]]]),
, enable_kmsdrm_shared=yes)
AC_DEFINE(SDL_VIDEO_DRIVER_KMSDRM, 1, [ ])
SOURCES="$SOURCES $srcdir/src/video/kmsdrm/*.c"
EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBDRM_CFLAGS $LIBGBM_CFLAGS"
AC_MSG_CHECKING(for kmsdrm dynamic loading support)
kmsdrm_shared=no
drm_lib=[`find_lib "libdrm.so.*" "$DRM_LIBS"`]
gbm_lib=[`find_lib "libgbm.so.*" "$DRM_LIBS"`]
if test x$have_loadso != xyes && \
test x$enable_kmsdrm_shared = xyes; then
AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic kmsdrm loading])
fi
if test x$have_loadso = xyes && \
test x$enable_kmsdrm_shared = xyes && test x$drm_lib != x && test x$gbm_lib != x; then
kmsdrm_shared=yes
AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC, "$drm_lib", [ ])
AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM, "$gbm_lib", [ ])
AC_DEFINE_UNQUOTED(HAVE_KMSDRM_SHARED, "TRUE", [ ])
SUMMARY_video="${SUMMARY_video} kmsdrm(dynamic)"
else
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBDRM_LIBS $LIBGBM_LIBS"
SUMMARY_video="${SUMMARY_video} kmsdrm"
fi
AC_MSG_RESULT($kmsdrm_shared)
have_video=yes
fi
fi
fi
fi
}
dnl rcg04172001 Set up the Null video driver.
CheckDummyVideo()
{
@@ -3148,6 +3223,7 @@ case "$host" in
CheckLibSampleRate
CheckX11
CheckDirectFB
CheckKMSDRM
CheckOpenGLX11
CheckOpenGLESX11
CheckMir