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Allow building the Raspberry Pi video driver with standard EGL headers

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This commit is contained in:
Cameron Cawley
2024-05-27 15:55:52 +01:00
committed by Sam Lantinga
parent 6c29778826
commit 65d8c07c7d
4 changed files with 34 additions and 16 deletions
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2
CMakeLists.txt
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@@ -467,7 +467,7 @@ dep_option(SDL_WAYLAND_SHARED "Dynamically load Wayland support" ON "SDL_WA
dep_option(SDL_WAYLAND_LIBDECOR "Use client-side window decorations on Wayland" ON "SDL_WAYLAND" OFF)
dep_option(SDL_WAYLAND_LIBDECOR_SHARED "Dynamically load libdecor support" ON "SDL_WAYLAND_LIBDECOR;SDL_WAYLAND_SHARED" OFF)
dep_option(SDL_WAYLAND_QT_TOUCH "QtWayland server support for Wayland video driver" ON "SDL_WAYLAND" OFF)
set_option(SDL_RPI "Use Raspberry Pi video driver" ${UNIX_SYS})
set_option(SDL_RPI "Use Raspberry Pi 0-3 video driver" ${UNIX_SYS})
set_option(SDL_COCOA "Use Cocoa video driver" ${APPLE})
set_option(SDL_DIRECTX "Use DirectX for Windows audio/video" ${WINDOWS})
set_option(SDL_XINPUT "Use Xinput for Windows" ${WINDOWS})

13
cmake/sdlchecks.cmake
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@@ -1277,13 +1277,18 @@ endmacro()
# - n/a
macro(CheckRPI)
if(SDL_RPI)
pkg_check_modules(VIDEO_RPI bcm_host brcmegl)
pkg_check_modules(VIDEO_RPI bcm_host)
if (NOT VIDEO_RPI_FOUND)
set(VIDEO_RPI_INCLUDE_DIRS "/opt/vc/include" "/opt/vc/include/interface/vcos/pthreads" "/opt/vc/include/interface/vmcs_host/linux/" )
set(VIDEO_RPI_LIBRARY_DIRS "/opt/vc/lib" )
set(VIDEO_RPI_LIBRARIES bcm_host )
set(VIDEO_RPI_LDFLAGS "-Wl,-rpath,/opt/vc/lib")
endif()
pkg_check_modules(VIDEO_RPI_EGL brcmegl)
if (NOT VIDEO_RPI_EGL_FOUND)
set(VIDEO_RPI_EGL_LDFLAGS "-Wl,-rpath,/opt/vc/lib")
endif()
listtostr(VIDEO_RPI_INCLUDE_DIRS VIDEO_RPI_INCLUDE_FLAGS "-I")
listtostr(VIDEO_RPI_LIBRARY_DIRS VIDEO_RPI_LIBRARY_FLAGS "-L")
@@ -1292,9 +1297,7 @@ macro(CheckRPI)
set(CMAKE_REQUIRED_LIBRARIES "${VIDEO_RPI_LIBRARIES}")
check_c_source_compiles("
#include <bcm_host.h>
#include <EGL/eglplatform.h>
int main(int argc, char **argv) {
EGL_DISPMANX_WINDOW_T window;
bcm_host_init();
}" HAVE_RPI)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
@@ -1308,7 +1311,7 @@ macro(CheckRPI)
list(APPEND EXTRA_LIBS ${VIDEO_RPI_LIBRARIES})
# !!! FIXME: shouldn't be using CMAKE_C_FLAGS, right?
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${VIDEO_RPI_INCLUDE_FLAGS} ${VIDEO_RPI_LIBRARY_FLAGS}")
list(APPEND EXTRA_LDFLAGS ${VIDEO_RPI_LDFLAGS})
list(APPEND EXTRA_LDFLAGS ${VIDEO_RPI_LDFLAGS} ${VIDEO_RPI_EGL_LDFLAGS})
endif()
endif()
endmacro()

25
configure.ac
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@@ -1848,18 +1848,27 @@ CheckNativeClient()
CheckRPI()
{
AC_ARG_ENABLE(video-rpi,
[AS_HELP_STRING([--enable-video-rpi], [use Raspberry Pi 2/3 video driver [default=yes]])],
[AS_HELP_STRING([--enable-video-rpi], [use Raspberry Pi 0-3 video driver [default=yes]])],
, enable_video_rpi=yes)
if test x$enable_video = xyes -a x$enable_video_rpi = xyes; then
PKG_CHECK_MODULES([RPI], [bcm_host brcmegl], video_rpi=yes, video_rpi=no)
PKG_CHECK_MODULES([RPI], [bcm_host], video_rpi=yes, video_rpi=no)
PKG_CHECK_MODULES([RPI_EGL], [brcmegl], video_rpi_egl=yes, video_rpi_egl=no)
if test x$video_rpi = xno; then
if test x$ARCH = xnetbsd; then
RPI_CFLAGS="-I/usr/pkg/include -I/usr/pkg/include/interface/vcos/pthreads -I/usr/pkg/include/interface/vmcs_host/linux"
RPI_LIBS="-Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lbcm_host"
RPI_LIBS="-L/usr/pkg/lib -lbcm_host"
else
RPI_CFLAGS="-I/opt/vc/include -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux"
RPI_LIBS="-Wl,-rpath,/opt/vc/lib -L/opt/vc/lib -lbcm_host"
RPI_LIBS="-L/opt/vc/lib -lbcm_host"
fi
fi
if test x$video_rpi_egl = xno; then
if test x$ARCH = xnetbsd; then
RPI_EGL_LIBS="-Wl,-R/usr/pkg/lib"
else
RPI_EGL_LIBS="-Wl,-rpath,/opt/vc/lib"
fi
fi
@@ -1867,15 +1876,13 @@ CheckRPI()
ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
# Add the Raspberry Pi compiler flags and libraries
CFLAGS="$CFLAGS $RPI_CFLAGS"; LIBS="$LIBS $RPI_LIBS"
CFLAGS="$CFLAGS $RPI_CFLAGS"; LIBS="$LIBS $RPI_EGL_LIBS $RPI_LIBS"
AC_MSG_CHECKING(for Raspberry Pi 2/3)
AC_MSG_CHECKING(for Raspberry Pi 0-3)
have_video_rpi=no
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <bcm_host.h>
#include <EGL/eglplatform.h>
]], [[
EGL_DISPMANX_WINDOW_T window;
bcm_host_init();
]])], [have_video_rpi=yes],[])
AC_MSG_RESULT($have_video_rpi)
@@ -1887,7 +1894,7 @@ CheckRPI()
CFLAGS="$CFLAGS $RPI_CFLAGS"
SDL_CFLAGS="$SDL_CFLAGS $RPI_CFLAGS"
EXTRA_CFLAGS="$EXTRA_CFLAGS $RPI_CFLAGS"
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $RPI_LIBS"
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $RPI_EGL_LIBS $RPI_LIBS"
SOURCES="$SOURCES $srcdir/src/video/raspberry/*.c"
AC_DEFINE(SDL_VIDEO_DRIVER_RPI, 1, [ ])
SUMMARY_video="${SUMMARY_video} rpi"

10
src/video/raspberry/SDL_rpivideo.h
View File

@@ -30,6 +30,14 @@
#include "EGL/egl.h"
#include "EGL/eglext.h"
/* This must match the definition of EGL_DISPMANX_WINDOW_T in EGL/eglplatform.h,
and is defined here to allow compiling with standard headers. */
typedef struct {
DISPMANX_ELEMENT_HANDLE_T element;
int width;
int height;
} SDL_EGL_DISPMANX_WINDOW_T;
typedef struct SDL_VideoData
{
uint32_t egl_refcount; /* OpenGL ES reference count */
@@ -42,7 +50,7 @@ typedef struct SDL_DisplayData
typedef struct SDL_WindowData
{
EGL_DISPMANX_WINDOW_T dispman_window;
SDL_EGL_DISPMANX_WINDOW_T dispman_window;
#ifdef SDL_VIDEO_OPENGL_EGL
EGLSurface egl_surface;
#endif