src/video/raspberry/SDL_rpivideo.c
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Mon, 18 Jul 2016 22:03:47 +0200
changeset 10202 16c283d1dcca
parent 9998 f67cf37e9cd4
permissions -rw-r--r--
Updated comments in video implementations.
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_RPI
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/* References
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 * http://elinux.org/RPi_VideoCore_APIs
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 * https://github.com/raspberrypi/firmware/blob/master/opt/vc/src/hello_pi/hello_triangle/triangle.c
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 * http://cgit.freedesktop.org/wayland/weston/tree/src/rpi-renderer.c
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 * http://cgit.freedesktop.org/wayland/weston/tree/src/compositor-rpi.c
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 */
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/* SDL internals */
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#include "../SDL_sysvideo.h"
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#include "SDL_version.h"
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#include "SDL_syswm.h"
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#include "SDL_loadso.h"
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#include "SDL_events.h"
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#include "../../events/SDL_mouse_c.h"
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#include "../../events/SDL_keyboard_c.h"
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#ifdef SDL_INPUT_LINUXEV
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#include "../../core/linux/SDL_evdev.h"
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#endif
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/* RPI declarations */
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#include "SDL_rpivideo.h"
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#include "SDL_rpievents_c.h"
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#include "SDL_rpiopengles.h"
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#include "SDL_rpimouse.h"
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static int
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RPI_Available(void)
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{
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    return 1;
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}
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static void
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RPI_Destroy(SDL_VideoDevice * device)
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{
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    /*    SDL_VideoData *phdata = (SDL_VideoData *) device->driverdata; */
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    if (device->driverdata != NULL) {
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        device->driverdata = NULL;
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    }
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}
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static SDL_VideoDevice *
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RPI_Create()
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{
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    SDL_VideoDevice *device;
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    SDL_VideoData *phdata;
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    /* Initialize SDL_VideoDevice structure */
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    device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
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    if (device == NULL) {
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        SDL_OutOfMemory();
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        return NULL;
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    }
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    /* Initialize internal data */
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    phdata = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
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    if (phdata == NULL) {
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        SDL_OutOfMemory();
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        SDL_free(device);
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        return NULL;
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    }
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    device->driverdata = phdata;
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    /* Setup amount of available displays */
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    device->num_displays = 0;
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    /* Set device free function */
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    device->free = RPI_Destroy;
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    /* Setup all functions which we can handle */
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    device->VideoInit = RPI_VideoInit;
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    device->VideoQuit = RPI_VideoQuit;
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    device->GetDisplayModes = RPI_GetDisplayModes;
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    device->SetDisplayMode = RPI_SetDisplayMode;
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    device->CreateWindow = RPI_CreateWindow;
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    device->CreateWindowFrom = RPI_CreateWindowFrom;
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    device->SetWindowTitle = RPI_SetWindowTitle;
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    device->SetWindowIcon = RPI_SetWindowIcon;
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    device->SetWindowPosition = RPI_SetWindowPosition;
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    device->SetWindowSize = RPI_SetWindowSize;
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    device->ShowWindow = RPI_ShowWindow;
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    device->HideWindow = RPI_HideWindow;
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    device->RaiseWindow = RPI_RaiseWindow;
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    device->MaximizeWindow = RPI_MaximizeWindow;
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    device->MinimizeWindow = RPI_MinimizeWindow;
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    device->RestoreWindow = RPI_RestoreWindow;
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    device->SetWindowGrab = RPI_SetWindowGrab;
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    device->DestroyWindow = RPI_DestroyWindow;
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    device->GetWindowWMInfo = RPI_GetWindowWMInfo;
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    device->GL_LoadLibrary = RPI_GLES_LoadLibrary;
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    device->GL_GetProcAddress = RPI_GLES_GetProcAddress;
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    device->GL_UnloadLibrary = RPI_GLES_UnloadLibrary;
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    device->GL_CreateContext = RPI_GLES_CreateContext;
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    device->GL_MakeCurrent = RPI_GLES_MakeCurrent;
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    device->GL_SetSwapInterval = RPI_GLES_SetSwapInterval;
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    device->GL_GetSwapInterval = RPI_GLES_GetSwapInterval;
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    device->GL_SwapWindow = RPI_GLES_SwapWindow;
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    device->GL_DeleteContext = RPI_GLES_DeleteContext;
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    device->PumpEvents = RPI_PumpEvents;
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    return device;
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}
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VideoBootStrap RPI_bootstrap = {
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    "RPI",
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    "RPI Video Driver",
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    RPI_Available,
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    RPI_Create
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};
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/*****************************************************************************/
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/* SDL Video and Display initialization/handling functions                   */
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/*****************************************************************************/
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int
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RPI_VideoInit(_THIS)
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{
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    SDL_VideoDisplay display;
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    SDL_DisplayMode current_mode;
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a67ccdd0c03a Patched to compile in C90 mode.
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    SDL_DisplayData *data;
7753
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    uint32_t w,h;
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    /* Initialize BCM Host */
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    bcm_host_init();
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    SDL_zero(current_mode);
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    if (graphics_get_display_size( 0, &w, &h) < 0) {
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        return -1;
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    }
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    current_mode.w = w;
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    current_mode.h = h;
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    /* FIXME: Is there a way to tell the actual refresh rate? */
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    current_mode.refresh_rate = 60;
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    /* 32 bpp for default */
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    current_mode.format = SDL_PIXELFORMAT_ABGR8888;
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    current_mode.driverdata = NULL;
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    SDL_zero(display);
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    display.desktop_mode = current_mode;
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    display.current_mode = current_mode;
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    /* Allocate display internal data */
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    data = (SDL_DisplayData *) SDL_calloc(1, sizeof(SDL_DisplayData));
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    if (data == NULL) {
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        return SDL_OutOfMemory();
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    }
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    data->dispman_display = vc_dispmanx_display_open( 0 /* LCD */);
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    display.driverdata = data;
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    SDL_AddVideoDisplay(&display);
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#ifdef SDL_INPUT_LINUXEV    
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    SDL_EVDEV_Init();
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#endif    
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    RPI_InitMouse(_this);
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    return 1;
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}
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void
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RPI_VideoQuit(_THIS)
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{
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#ifdef SDL_INPUT_LINUXEV    
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    SDL_EVDEV_Quit();
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#endif    
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}
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void
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RPI_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
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{
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    /* Only one display mode available, the current one */
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    SDL_AddDisplayMode(display, &display->current_mode);
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}
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int
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RPI_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
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{
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   211
    return 0;
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}
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int
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RPI_CreateWindow(_THIS, SDL_Window * window)
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{
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    SDL_WindowData *wdata;
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    SDL_VideoDisplay *display;
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    SDL_DisplayData *displaydata;
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    VC_RECT_T dst_rect;
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    VC_RECT_T src_rect;
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    VC_DISPMANX_ALPHA_T         dispman_alpha;
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    DISPMANX_UPDATE_HANDLE_T dispman_update;
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   224
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    /* Disable alpha, otherwise the app looks composed with whatever dispman is showing (X11, console,etc) */
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    dispman_alpha.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS; 
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    dispman_alpha.opacity = 0xFF; 
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    dispman_alpha.mask = 0;
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    /* Allocate window internal data */
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   231
    wdata = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));
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   232
    if (wdata == NULL) {
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   233
        return SDL_OutOfMemory();
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   234
    }
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   235
    display = SDL_GetDisplayForWindow(window);
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   236
    displaydata = (SDL_DisplayData *) display->driverdata;
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   238
    /* Windows have one size for now */
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   239
    window->w = display->desktop_mode.w;
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   240
    window->h = display->desktop_mode.h;
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   241
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    /* OpenGL ES is the law here, buddy */
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    window->flags |= SDL_WINDOW_OPENGL;
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    /* Create a dispman element and associate a window to it */
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    dst_rect.x = 0;
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    dst_rect.y = 0;
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    dst_rect.width = window->w;
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   249
    dst_rect.height = window->h;
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   250
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    src_rect.x = 0;
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    src_rect.y = 0;
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   253
    src_rect.width = window->w << 16;
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    src_rect.height = window->h << 16;
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    dispman_update = vc_dispmanx_update_start( 0 );
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   257
    wdata->dispman_window.element = vc_dispmanx_element_add ( dispman_update, displaydata->dispman_display, SDL_RPI_VIDEOLAYER /* layer */, &dst_rect, 0/*src*/, &src_rect, DISPMANX_PROTECTION_NONE, &dispman_alpha /*alpha*/, 0/*clamp*/, 0/*transform*/);
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   258
    wdata->dispman_window.width = window->w;
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   259
    wdata->dispman_window.height = window->h;
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    vc_dispmanx_update_submit_sync( dispman_update );
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   261
    
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   262
    if (!_this->egl_data) {
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   263
        if (SDL_GL_LoadLibrary(NULL) < 0) {
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   264
            return -1;
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   265
        }
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   266
    }
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   267
    wdata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType) &wdata->dispman_window);
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   268
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   269
    if (wdata->egl_surface == EGL_NO_SURFACE) {
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   270
        return SDL_SetError("Could not create GLES window surface");
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   271
    }
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    /* Setup driver data for this window */
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   274
    window->driverdata = wdata;
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   275
    
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    /* One window, it always has focus */
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    SDL_SetMouseFocus(window);
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    SDL_SetKeyboardFocus(window);
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   279
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    /* Window has been successfully created */
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    return 0;
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}
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   283
7986
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   284
void
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parents: 7799
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   285
RPI_DestroyWindow(_THIS, SDL_Window * window)
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   286
{
9711
0a329b2a297f RPi: Patched to compile without OpenGL (thanks, Simon!), other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
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   287
    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
0a329b2a297f RPi: Patched to compile without OpenGL (thanks, Simon!), other cleanups.
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   288
    if(data) {
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   289
#if SDL_VIDEO_OPENGL_EGL
7986
ffb7bf531644 Clean up the EGL related video backends (X11, Android, RPi)
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diff changeset
   290
        if (data->egl_surface != EGL_NO_SURFACE) {
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diff changeset
   291
            SDL_EGL_DestroySurface(_this, data->egl_surface);
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parents: 7799
diff changeset
   292
        }
9711
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   293
#endif
0a329b2a297f RPi: Patched to compile without OpenGL (thanks, Simon!), other cleanups.
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   294
        SDL_free(data);
7986
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   295
        window->driverdata = NULL;
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diff changeset
   296
    }
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   297
}
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   298
7753
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int
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RPI_CreateWindowFrom(_THIS, SDL_Window * window, const void *data)
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   301
{
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   302
    return -1;
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   303
}
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   304
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   305
void
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   306
RPI_SetWindowTitle(_THIS, SDL_Window * window)
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   307
{
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   308
}
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   309
void
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   310
RPI_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   311
{
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parents:
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   312
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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   313
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   314
RPI_SetWindowPosition(_THIS, SDL_Window * window)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   315
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   316
}
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   317
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   318
RPI_SetWindowSize(_THIS, SDL_Window * window)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   319
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   320
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   321
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   322
RPI_ShowWindow(_THIS, SDL_Window * window)
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parents:
diff changeset
   323
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   324
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   325
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   326
RPI_HideWindow(_THIS, SDL_Window * window)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   327
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   328
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   329
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   330
RPI_RaiseWindow(_THIS, SDL_Window * window)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   331
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   332
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   333
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   334
RPI_MaximizeWindow(_THIS, SDL_Window * window)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   335
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   336
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   337
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   338
RPI_MinimizeWindow(_THIS, SDL_Window * window)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   339
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   340
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   341
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   342
RPI_RestoreWindow(_THIS, SDL_Window * window)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   343
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   344
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   345
void
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   346
RPI_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   347
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   348
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   349
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   350
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   351
/*****************************************************************************/
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   352
/* SDL Window Manager function                                               */
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   353
/*****************************************************************************/
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   354
SDL_bool
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   355
RPI_GetWindowWMInfo(_THIS, SDL_Window * window, struct SDL_SysWMinfo *info)
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   356
{
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   357
    if (info->version.major <= SDL_MAJOR_VERSION) {
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   358
        return SDL_TRUE;
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   359
    } else {
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   360
        SDL_SetError("application not compiled with SDL %d.%d\n",
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   361
                     SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   362
        return SDL_FALSE;
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   363
    }
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   364
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   365
    /* Failed to get window manager information */
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   366
    return SDL_FALSE;
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   367
}
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   368
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
Gabriel Jacobo <gabomdq@gmail.com>
parents:
diff changeset
   369
#endif /* SDL_VIDEO_DRIVER_RPI */
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parents:
diff changeset
   370
e4c38f17bfad Raspberry Pi support (also unified UDEV and EVDEV support)
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parents:
diff changeset
   371
/* vi: set ts=4 sw=4 expandtab: */