src/video/pandora/SDL_pandora.c
author Sam Lantinga <slouken@libsdl.org>
Sun, 31 May 2009 11:53:12 +0000
changeset 3161 494559cc723b
child 3235 d35b649858e0
permissions -rw-r--r--
OpenPandora support added by David Carré
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2009 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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    Open Pandora SDL driver
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    Copyright (C) 2009 David Carré
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    (cpasjuste@gmail.com)
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*/
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/* SDL internals */
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#include "SDL_config.h"
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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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/* PND declarations */
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#include "SDL_pandora.h"
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#include "SDL_pandora_events.h"
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static SDL_bool PND_initialized = SDL_FALSE;
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static int
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PND_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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PND_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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PND_create()
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{
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    SDL_VideoDevice *device;
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    SDL_VideoData *phdata;
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    int status;
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    /* Check if pandora could be initialized */
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    status = PND_available();
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    if (status == 0) {
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        /* PND could not be used */
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        return NULL;
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    }
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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 Pandora specific 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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    phdata->egl_initialized = SDL_TRUE;
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    /* Setup amount of available displays and current display */
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    device->num_displays = 1;
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    device->current_display = 1;
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    /* Set device free function */
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    device->free = PND_destroy;
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    /* Setup all functions which we can handle */
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    device->VideoInit = PND_videoinit;
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    device->VideoQuit = PND_videoquit;
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    device->GetDisplayModes = PND_getdisplaymodes;
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    device->SetDisplayMode = PND_setdisplaymode;
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    device->SetDisplayPalette = PND_setdisplaypalette;
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    device->GetDisplayPalette = PND_getdisplaypalette;
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    device->SetDisplayGammaRamp = PND_setdisplaygammaramp;
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    device->GetDisplayGammaRamp = PND_getdisplaygammaramp;
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    device->CreateWindow = PND_createwindow;
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    device->CreateWindowFrom = PND_createwindowfrom;
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    device->SetWindowTitle = PND_setwindowtitle;
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    device->SetWindowIcon = PND_setwindowicon;
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    device->SetWindowPosition = PND_setwindowposition;
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    device->SetWindowSize = PND_setwindowsize;
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    device->ShowWindow = PND_showwindow;
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    device->HideWindow = PND_hidewindow;
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    device->RaiseWindow = PND_raisewindow;
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    device->MaximizeWindow = PND_maximizewindow;
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    device->MinimizeWindow = PND_minimizewindow;
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    device->RestoreWindow = PND_restorewindow;
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    device->SetWindowGrab = PND_setwindowgrab;
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    device->DestroyWindow = PND_destroywindow;
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    device->GetWindowWMInfo = PND_getwindowwminfo;
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    device->GL_LoadLibrary = PND_gl_loadlibrary;
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    device->GL_GetProcAddress = PND_gl_getprocaddres;
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    device->GL_UnloadLibrary = PND_gl_unloadlibrary;
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    device->GL_CreateContext = PND_gl_createcontext;
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    device->GL_MakeCurrent = PND_gl_makecurrent;
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    device->GL_SetSwapInterval = PND_gl_setswapinterval;
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    device->GL_GetSwapInterval = PND_gl_getswapinterval;
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    device->GL_SwapWindow = PND_gl_swapwindow;
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    device->GL_DeleteContext = PND_gl_deletecontext;
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    device->PumpEvents = PND_PumpEvents;
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    return device;
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}
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VideoBootStrap PND_bootstrap = {
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    "pandora",
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    "SDL Pandora Video Driver",
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    PND_available,
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    PND_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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PND_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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    SDL_zero(current_mode);
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    current_mode.w = 800;
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    current_mode.h = 480;
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    current_mode.refresh_rate = 60;
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    current_mode.format = SDL_PIXELFORMAT_RGB565;
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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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    display.driverdata = NULL;
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    SDL_AddVideoDisplay(&display);
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    return 1;
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}
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void
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PND_videoquit(_THIS)
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{
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}
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void
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PND_getdisplaymodes(_THIS)
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{
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}
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int
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PND_setdisplaymode(_THIS, SDL_DisplayMode * mode)
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{
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    return 0;
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}
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int
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PND_setdisplaypalette(_THIS, SDL_Palette * palette)
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{
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    SDL_DisplayData *didata =
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        (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
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    /* Setting display palette operation has been failed */
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    return -1;
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}
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int
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PND_getdisplaypalette(_THIS, SDL_Palette * palette)
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{
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    SDL_DisplayData *didata =
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        (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
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    /* Getting display palette operation has been failed */
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    return -1;
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}
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int
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PND_setdisplaygammaramp(_THIS, Uint16 * ramp)
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{
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    SDL_DisplayData *didata =
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        (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
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    /* Setting display gamma ramp operation has been failed */
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    return -1;
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}
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int
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PND_getdisplaygammaramp(_THIS, Uint16 * ramp)
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{
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    /* Getting display gamma ramp operation has been failed */
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    return -1;
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}
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int
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PND_createwindow(_THIS, SDL_Window * window)
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{
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    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
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    SDL_WindowData *wdata;
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    uint32_t winargc = 0;
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    int32_t status;
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    /* Allocate window internal data */
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    wdata = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));
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    if (wdata == NULL) {
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        SDL_OutOfMemory();
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        return -1;
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    }
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    /* Setup driver data for this window */
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    window->driverdata = wdata;
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    /* Check if window must support OpenGL ES rendering */
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    if ((window->flags & SDL_WINDOW_OPENGL) == SDL_WINDOW_OPENGL) {
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        EGLBoolean initstatus;
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        /* Mark this window as OpenGL ES compatible */
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        wdata->uses_gles = SDL_TRUE;
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        /* Create connection to OpenGL ES */
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        if (phdata->egl_display == EGL_NO_DISPLAY) {
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            phdata->egl_display = eglGetDisplay((NativeDisplayType) 0);
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            if (phdata->egl_display == EGL_NO_DISPLAY) {
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                SDL_SetError("PND: Can't get connection to OpenGL ES");
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                return -1;
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            }
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            initstatus = eglInitialize(phdata->egl_display, NULL, NULL);
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            if (initstatus != EGL_TRUE) {
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                SDL_SetError("PND: Can't init OpenGL ES library");
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                return -1;
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            }
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        }
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        phdata->egl_refcount++;
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    }
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    /* Window has been successfully created */
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    return 0;
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}
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int
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PND_createwindowfrom(_THIS, SDL_Window * window, const void *data)
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{
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    return -1;
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}
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void
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PND_setwindowtitle(_THIS, SDL_Window * window)
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{
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}
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void
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PND_setwindowicon(_THIS, SDL_Window * window, SDL_Surface * icon)
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{
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}
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void
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PND_setwindowposition(_THIS, SDL_Window * window)
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{
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}
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void
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PND_setwindowsize(_THIS, SDL_Window * window)
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{
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}
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void
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PND_showwindow(_THIS, SDL_Window * window)
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{
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}
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void
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PND_hidewindow(_THIS, SDL_Window * window)
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{
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}
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void
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PND_raisewindow(_THIS, SDL_Window * window)
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{
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}
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void
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PND_maximizewindow(_THIS, SDL_Window * window)
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{
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}
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void
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PND_minimizewindow(_THIS, SDL_Window * window)
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{
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}
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void
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PND_restorewindow(_THIS, SDL_Window * window)
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{
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}
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void
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PND_setwindowgrab(_THIS, SDL_Window * window)
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{
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}
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void
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PND_destroywindow(_THIS, SDL_Window * window)
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{
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}
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/*****************************************************************************/
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/* SDL Window Manager function                                               */
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/*****************************************************************************/
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SDL_bool
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PND_getwindowwminfo(_THIS, SDL_Window * window, struct SDL_SysWMinfo *info)
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{
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    if (info->version.major <= SDL_MAJOR_VERSION) {
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        return SDL_TRUE;
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    } else {
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        SDL_SetError("application not compiled with SDL %d.%d\n",
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                     SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
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        return SDL_FALSE;
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    }
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    /* Failed to get window manager information */
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    return SDL_FALSE;
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}
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/*****************************************************************************/
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/* SDL OpenGL/OpenGL ES functions                                            */
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/*****************************************************************************/
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int
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PND_gl_loadlibrary(_THIS, const char *path)
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{
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    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
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    /* Check if OpenGL ES library is specified for GF driver */
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    if (path == NULL) {
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        path = SDL_getenv("SDL_OPENGL_LIBRARY");
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        if (path == NULL) {
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            path = SDL_getenv("SDL_OPENGLES_LIBRARY");
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        }
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    }
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    /* Check if default library loading requested */
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    if (path == NULL) {
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        /* Already linked with GF library which provides egl* subset of  */
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        /* functions, use Common profile of OpenGL ES library by default */
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        path = "/usr/lib/libGLES_CM.so";
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    }
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    /* Load dynamic library */
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    _this->gl_config.dll_handle = SDL_LoadObject(path);
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    if (!_this->gl_config.dll_handle) {
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        /* Failed to load new GL ES library */
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        SDL_SetError("PND: Failed to locate OpenGL ES library");
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        return -1;
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    }
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    /* Store OpenGL ES library path and name */
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    SDL_strlcpy(_this->gl_config.driver_path, path,
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                SDL_arraysize(_this->gl_config.driver_path));
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    /* New OpenGL ES library is loaded */
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    return 0;
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}
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void *
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PND_gl_getprocaddres(_THIS, const char *proc)
slouken@3161
   391
{
slouken@3161
   392
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   393
    void *function_address;
slouken@3161
   394
slouken@3161
   395
    /* Try to get function address through the egl interface */
slouken@3161
   396
    function_address = eglGetProcAddress(proc);
slouken@3161
   397
    if (function_address != NULL) {
slouken@3161
   398
        return function_address;
slouken@3161
   399
    }
slouken@3161
   400
slouken@3161
   401
    /* Then try to get function in the OpenGL ES library */
slouken@3161
   402
    if (_this->gl_config.dll_handle) {
slouken@3161
   403
        function_address =
slouken@3161
   404
            SDL_LoadFunction(_this->gl_config.dll_handle, proc);
slouken@3161
   405
        if (function_address != NULL) {
slouken@3161
   406
            return function_address;
slouken@3161
   407
        }
slouken@3161
   408
    }
slouken@3161
   409
slouken@3161
   410
    /* Failed to get GL ES function address pointer */
slouken@3161
   411
    SDL_SetError("PND: Cannot locate OpenGL ES function name");
slouken@3161
   412
    return NULL;
slouken@3161
   413
}
slouken@3161
   414
slouken@3161
   415
void
slouken@3161
   416
PND_gl_unloadlibrary(_THIS)
slouken@3161
   417
{
slouken@3161
   418
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   419
slouken@3161
   420
    if (phdata->egl_initialized == SDL_TRUE) {
slouken@3161
   421
        /* Unload OpenGL ES library */
slouken@3161
   422
        if (_this->gl_config.dll_handle) {
slouken@3161
   423
            SDL_UnloadObject(_this->gl_config.dll_handle);
slouken@3161
   424
            _this->gl_config.dll_handle = NULL;
slouken@3161
   425
        }
slouken@3161
   426
    } else {
slouken@3161
   427
        SDL_SetError("PND: GF initialization failed, no OpenGL ES support");
slouken@3161
   428
    }
slouken@3161
   429
}
slouken@3161
   430
slouken@3161
   431
SDL_GLContext
slouken@3161
   432
PND_gl_createcontext(_THIS, SDL_Window * window)
slouken@3161
   433
{
slouken@3161
   434
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   435
    SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
slouken@3161
   436
    SDL_DisplayData *didata =
slouken@3161
   437
        (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
slouken@3161
   438
    EGLBoolean status;
slouken@3161
   439
    int32_t gfstatus;
slouken@3161
   440
    EGLint configs;
slouken@3161
   441
    uint32_t attr_pos;
slouken@3161
   442
    EGLint attr_value;
slouken@3161
   443
    EGLint cit;
slouken@3161
   444
slouken@3161
   445
    /* Check if EGL was initialized */
slouken@3161
   446
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   447
        SDL_SetError("PND: EGL initialization failed, no OpenGL ES support");
slouken@3161
   448
        return NULL;
slouken@3161
   449
    }
slouken@3161
   450
slouken@3161
   451
    /* Prepare attributes list to pass them to OpenGL ES */
slouken@3161
   452
    attr_pos = 0;
slouken@3161
   453
    wdata->gles_attributes[attr_pos++] = EGL_SURFACE_TYPE;
slouken@3161
   454
    wdata->gles_attributes[attr_pos++] = EGL_WINDOW_BIT;
slouken@3161
   455
    wdata->gles_attributes[attr_pos++] = EGL_RED_SIZE;
slouken@3161
   456
    wdata->gles_attributes[attr_pos++] = _this->gl_config.red_size;
slouken@3161
   457
    wdata->gles_attributes[attr_pos++] = EGL_GREEN_SIZE;
slouken@3161
   458
    wdata->gles_attributes[attr_pos++] = _this->gl_config.green_size;
slouken@3161
   459
    wdata->gles_attributes[attr_pos++] = EGL_BLUE_SIZE;
slouken@3161
   460
    wdata->gles_attributes[attr_pos++] = _this->gl_config.blue_size;
slouken@3161
   461
    wdata->gles_attributes[attr_pos++] = EGL_ALPHA_SIZE;
slouken@3161
   462
slouken@3161
   463
    /* Setup alpha size in bits */
slouken@3161
   464
    if (_this->gl_config.alpha_size) {
slouken@3161
   465
        wdata->gles_attributes[attr_pos++] = _this->gl_config.alpha_size;
slouken@3161
   466
    } else {
slouken@3161
   467
        wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   468
    }
slouken@3161
   469
slouken@3161
   470
    /* Setup color buffer size */
slouken@3161
   471
    if (_this->gl_config.buffer_size) {
slouken@3161
   472
        wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
slouken@3161
   473
        wdata->gles_attributes[attr_pos++] = _this->gl_config.buffer_size;
slouken@3161
   474
    } else {
slouken@3161
   475
        wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
slouken@3161
   476
        wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   477
    }
slouken@3161
   478
slouken@3161
   479
    /* Setup depth buffer bits */
slouken@3161
   480
    wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
slouken@3161
   481
    wdata->gles_attributes[attr_pos++] = _this->gl_config.depth_size;
slouken@3161
   482
slouken@3161
   483
    /* Setup stencil bits */
slouken@3161
   484
    if (_this->gl_config.stencil_size) {
slouken@3161
   485
        wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   486
        wdata->gles_attributes[attr_pos++] = _this->gl_config.buffer_size;
slouken@3161
   487
    } else {
slouken@3161
   488
        wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   489
        wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   490
    }
slouken@3161
   491
slouken@3161
   492
    /* Set number of samples in multisampling */
slouken@3161
   493
    if (_this->gl_config.multisamplesamples) {
slouken@3161
   494
        wdata->gles_attributes[attr_pos++] = EGL_SAMPLES;
slouken@3161
   495
        wdata->gles_attributes[attr_pos++] =
slouken@3161
   496
            _this->gl_config.multisamplesamples;
slouken@3161
   497
    }
slouken@3161
   498
slouken@3161
   499
    /* Multisample buffers, OpenGL ES 1.0 spec defines 0 or 1 buffer */
slouken@3161
   500
    if (_this->gl_config.multisamplebuffers) {
slouken@3161
   501
        wdata->gles_attributes[attr_pos++] = EGL_SAMPLE_BUFFERS;
slouken@3161
   502
        wdata->gles_attributes[attr_pos++] =
slouken@3161
   503
            _this->gl_config.multisamplebuffers;
slouken@3161
   504
    }
slouken@3161
   505
slouken@3161
   506
    /* Finish attributes list */
slouken@3161
   507
    wdata->gles_attributes[attr_pos] = EGL_NONE;
slouken@3161
   508
slouken@3161
   509
    /* Request first suitable framebuffer configuration */
slouken@3161
   510
    status = eglChooseConfig(phdata->egl_display, wdata->gles_attributes,
slouken@3161
   511
                             wdata->gles_configs, 1, &configs);
slouken@3161
   512
    if (status != EGL_TRUE) {
slouken@3161
   513
        SDL_SetError("PND: Can't find closest configuration for OpenGL ES");
slouken@3161
   514
        return NULL;
slouken@3161
   515
    }
slouken@3161
   516
slouken@3161
   517
    /* Check if nothing has been found, try "don't care" settings */
slouken@3161
   518
    if (configs == 0) {
slouken@3161
   519
        int32_t it;
slouken@3161
   520
        int32_t jt;
slouken@3161
   521
        GLint depthbits[4] = { 32, 24, 16, EGL_DONT_CARE };
slouken@3161
   522
slouken@3161
   523
        for (it = 0; it < 4; it++) {
slouken@3161
   524
            for (jt = 16; jt >= 0; jt--) {
slouken@3161
   525
                /* Don't care about color buffer bits, use what exist */
slouken@3161
   526
                /* Replace previous set data with EGL_DONT_CARE       */
slouken@3161
   527
                attr_pos = 0;
slouken@3161
   528
                wdata->gles_attributes[attr_pos++] = EGL_SURFACE_TYPE;
slouken@3161
   529
                wdata->gles_attributes[attr_pos++] = EGL_WINDOW_BIT;
slouken@3161
   530
                wdata->gles_attributes[attr_pos++] = EGL_RED_SIZE;
slouken@3161
   531
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   532
                wdata->gles_attributes[attr_pos++] = EGL_GREEN_SIZE;
slouken@3161
   533
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   534
                wdata->gles_attributes[attr_pos++] = EGL_BLUE_SIZE;
slouken@3161
   535
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   536
                wdata->gles_attributes[attr_pos++] = EGL_ALPHA_SIZE;
slouken@3161
   537
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   538
                wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
slouken@3161
   539
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   540
slouken@3161
   541
                /* Try to find requested or smallest depth */
slouken@3161
   542
                if (_this->gl_config.depth_size) {
slouken@3161
   543
                    wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
slouken@3161
   544
                    wdata->gles_attributes[attr_pos++] = depthbits[it];
slouken@3161
   545
                } else {
slouken@3161
   546
                    wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
slouken@3161
   547
                    wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   548
                }
slouken@3161
   549
slouken@3161
   550
                if (_this->gl_config.stencil_size) {
slouken@3161
   551
                    wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   552
                    wdata->gles_attributes[attr_pos++] = jt;
slouken@3161
   553
                } else {
slouken@3161
   554
                    wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   555
                    wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   556
                }
slouken@3161
   557
slouken@3161
   558
                wdata->gles_attributes[attr_pos++] = EGL_SAMPLES;
slouken@3161
   559
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   560
                wdata->gles_attributes[attr_pos++] = EGL_SAMPLE_BUFFERS;
slouken@3161
   561
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   562
                wdata->gles_attributes[attr_pos] = EGL_NONE;
slouken@3161
   563
slouken@3161
   564
                /* Request first suitable framebuffer configuration */
slouken@3161
   565
                status =
slouken@3161
   566
                    eglChooseConfig(phdata->egl_display,
slouken@3161
   567
                                    wdata->gles_attributes,
slouken@3161
   568
                                    wdata->gles_configs, 1, &configs);
slouken@3161
   569
slouken@3161
   570
                if (status != EGL_TRUE) {
slouken@3161
   571
                    SDL_SetError
slouken@3161
   572
                        ("PND: Can't find closest configuration for OpenGL ES");
slouken@3161
   573
                    return NULL;
slouken@3161
   574
                }
slouken@3161
   575
                if (configs != 0) {
slouken@3161
   576
                    break;
slouken@3161
   577
                }
slouken@3161
   578
            }
slouken@3161
   579
            if (configs != 0) {
slouken@3161
   580
                break;
slouken@3161
   581
            }
slouken@3161
   582
        }
slouken@3161
   583
slouken@3161
   584
        /* No available configs */
slouken@3161
   585
        if (configs == 0) {
slouken@3161
   586
            SDL_SetError("PND: Can't find any configuration for OpenGL ES");
slouken@3161
   587
            return NULL;
slouken@3161
   588
        }
slouken@3161
   589
    }
slouken@3161
   590
slouken@3161
   591
    /* Initialize config index */
slouken@3161
   592
    wdata->gles_config = 0;
slouken@3161
   593
slouken@3161
   594
    /* Now check each configuration to find out the best */
slouken@3161
   595
    for (cit = 0; cit < configs; cit++) {
slouken@3161
   596
        uint32_t stencil_found;
slouken@3161
   597
        uint32_t depth_found;
slouken@3161
   598
slouken@3161
   599
        stencil_found = 0;
slouken@3161
   600
        depth_found = 0;
slouken@3161
   601
slouken@3161
   602
        if (_this->gl_config.stencil_size) {
slouken@3161
   603
            status =
slouken@3161
   604
                eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   605
                                   wdata->gles_configs[cit], EGL_STENCIL_SIZE,
slouken@3161
   606
                                   &attr_value);
slouken@3161
   607
            if (status == EGL_TRUE) {
slouken@3161
   608
                if (attr_value != 0) {
slouken@3161
   609
                    stencil_found = 1;
slouken@3161
   610
                }
slouken@3161
   611
            }
slouken@3161
   612
        } else {
slouken@3161
   613
            stencil_found = 1;
slouken@3161
   614
        }
slouken@3161
   615
slouken@3161
   616
        if (_this->gl_config.depth_size) {
slouken@3161
   617
            status =
slouken@3161
   618
                eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   619
                                   wdata->gles_configs[cit], EGL_DEPTH_SIZE,
slouken@3161
   620
                                   &attr_value);
slouken@3161
   621
            if (status == EGL_TRUE) {
slouken@3161
   622
                if (attr_value != 0) {
slouken@3161
   623
                    depth_found = 1;
slouken@3161
   624
                }
slouken@3161
   625
            }
slouken@3161
   626
        } else {
slouken@3161
   627
            depth_found = 1;
slouken@3161
   628
        }
slouken@3161
   629
slouken@3161
   630
        /* Exit from loop if found appropriate configuration */
slouken@3161
   631
        if ((depth_found != 0) && (stencil_found != 0)) {
slouken@3161
   632
            break;
slouken@3161
   633
        }
slouken@3161
   634
    }
slouken@3161
   635
slouken@3161
   636
    /* If best could not be found, use first */
slouken@3161
   637
    if (cit == configs) {
slouken@3161
   638
        cit = 0;
slouken@3161
   639
    }
slouken@3161
   640
    wdata->gles_config = cit;
slouken@3161
   641
slouken@3161
   642
    /* Create OpenGL ES context */
slouken@3161
   643
    wdata->gles_context =
slouken@3161
   644
        eglCreateContext(phdata->egl_display,
slouken@3161
   645
                         wdata->gles_configs[wdata->gles_config], NULL, NULL);
slouken@3161
   646
    if (wdata->gles_context == EGL_NO_CONTEXT) {
slouken@3161
   647
        SDL_SetError("PND: OpenGL ES context creation has been failed");
slouken@3161
   648
        return NULL;
slouken@3161
   649
    }
slouken@3161
   650
slouken@3161
   651
    wdata->gles_surface =
slouken@3161
   652
        eglCreateWindowSurface(phdata->egl_display,
slouken@3161
   653
                               wdata->gles_configs[wdata->gles_config],
slouken@3161
   654
                               (NativeWindowType) 0, NULL);
slouken@3161
   655
    if (wdata->gles_surface == 0) {
slouken@3161
   656
        SDL_SetError("Error : eglCreateWindowSurface failed;\n");
slouken@3161
   657
        return NULL;
slouken@3161
   658
    }
slouken@3161
   659
slouken@3161
   660
    /* Make just created context current */
slouken@3161
   661
    status =
slouken@3161
   662
        eglMakeCurrent(phdata->egl_display, wdata->gles_surface,
slouken@3161
   663
                       wdata->gles_surface, wdata->gles_context);
slouken@3161
   664
    if (status != EGL_TRUE) {
slouken@3161
   665
        /* Destroy OpenGL ES surface */
slouken@3161
   666
        eglDestroySurface(phdata->egl_display, wdata->gles_surface);
slouken@3161
   667
        eglDestroyContext(phdata->egl_display, wdata->gles_context);
slouken@3161
   668
        wdata->gles_context = EGL_NO_CONTEXT;
slouken@3161
   669
        SDL_SetError("PND: Can't set OpenGL ES context on creation");
slouken@3161
   670
        return NULL;
slouken@3161
   671
    }
slouken@3161
   672
slouken@3161
   673
    _this->gl_config.accelerated = 1;
slouken@3161
   674
slouken@3161
   675
    /* Always clear stereo enable, since OpenGL ES do not supports stereo */
slouken@3161
   676
    _this->gl_config.stereo = 0;
slouken@3161
   677
slouken@3161
   678
    /* Get back samples and samplebuffers configurations. Rest framebuffer */
slouken@3161
   679
    /* parameters could be obtained through the OpenGL ES API              */
slouken@3161
   680
    status =
slouken@3161
   681
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   682
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   683
                           EGL_SAMPLES, &attr_value);
slouken@3161
   684
    if (status == EGL_TRUE) {
slouken@3161
   685
        _this->gl_config.multisamplesamples = attr_value;
slouken@3161
   686
    }
slouken@3161
   687
    status =
slouken@3161
   688
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   689
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   690
                           EGL_SAMPLE_BUFFERS, &attr_value);
slouken@3161
   691
    if (status == EGL_TRUE) {
slouken@3161
   692
        _this->gl_config.multisamplebuffers = attr_value;
slouken@3161
   693
    }
slouken@3161
   694
slouken@3161
   695
    /* Get back stencil and depth buffer sizes */
slouken@3161
   696
    status =
slouken@3161
   697
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   698
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   699
                           EGL_DEPTH_SIZE, &attr_value);
slouken@3161
   700
    if (status == EGL_TRUE) {
slouken@3161
   701
        _this->gl_config.depth_size = attr_value;
slouken@3161
   702
    }
slouken@3161
   703
    status =
slouken@3161
   704
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   705
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   706
                           EGL_STENCIL_SIZE, &attr_value);
slouken@3161
   707
    if (status == EGL_TRUE) {
slouken@3161
   708
        _this->gl_config.stencil_size = attr_value;
slouken@3161
   709
    }
slouken@3161
   710
slouken@3161
   711
    /* Under PND OpenGL ES output can't be double buffered */
slouken@3161
   712
    _this->gl_config.double_buffer = 0;
slouken@3161
   713
slouken@3161
   714
    /* GL ES context was successfully created */
slouken@3161
   715
    return wdata->gles_context;
slouken@3161
   716
}
slouken@3161
   717
slouken@3161
   718
int
slouken@3161
   719
PND_gl_makecurrent(_THIS, SDL_Window * window, SDL_GLContext context)
slouken@3161
   720
{
slouken@3161
   721
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   722
    SDL_WindowData *wdata;
slouken@3161
   723
    EGLBoolean status;
slouken@3161
   724
slouken@3161
   725
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   726
        SDL_SetError("PND: GF initialization failed, no OpenGL ES support");
slouken@3161
   727
        return -1;
slouken@3161
   728
    }
slouken@3161
   729
slouken@3161
   730
    if ((window == NULL) && (context == NULL)) {
slouken@3161
   731
        status =
slouken@3161
   732
            eglMakeCurrent(phdata->egl_display, EGL_NO_SURFACE,
slouken@3161
   733
                           EGL_NO_SURFACE, EGL_NO_CONTEXT);
slouken@3161
   734
        if (status != EGL_TRUE) {
slouken@3161
   735
            /* Failed to set current GL ES context */
slouken@3161
   736
            SDL_SetError("PND: Can't set OpenGL ES context");
slouken@3161
   737
            return -1;
slouken@3161
   738
        }
slouken@3161
   739
    } else {
slouken@3161
   740
        wdata = (SDL_WindowData *) window->driverdata;
slouken@3161
   741
        if (wdata->gles_surface == EGL_NO_SURFACE) {
slouken@3161
   742
            SDL_SetError
slouken@3161
   743
                ("PND: OpenGL ES surface is not initialized for this window");
slouken@3161
   744
            return -1;
slouken@3161
   745
        }
slouken@3161
   746
        if (wdata->gles_context == EGL_NO_CONTEXT) {
slouken@3161
   747
            SDL_SetError
slouken@3161
   748
                ("PND: OpenGL ES context is not initialized for this window");
slouken@3161
   749
            return -1;
slouken@3161
   750
        }
slouken@3161
   751
        if (wdata->gles_context != context) {
slouken@3161
   752
            SDL_SetError
slouken@3161
   753
                ("PND: OpenGL ES context is not belong to this window");
slouken@3161
   754
            return -1;
slouken@3161
   755
        }
slouken@3161
   756
        status =
slouken@3161
   757
            eglMakeCurrent(phdata->egl_display, wdata->gles_surface,
slouken@3161
   758
                           wdata->gles_surface, wdata->gles_context);
slouken@3161
   759
        if (status != EGL_TRUE) {
slouken@3161
   760
            /* Failed to set current GL ES context */
slouken@3161
   761
            SDL_SetError("PND: Can't set OpenGL ES context");
slouken@3161
   762
            return -1;
slouken@3161
   763
        }
slouken@3161
   764
    }
slouken@3161
   765
    return 0;
slouken@3161
   766
}
slouken@3161
   767
slouken@3161
   768
int
slouken@3161
   769
PND_gl_setswapinterval(_THIS, int interval)
slouken@3161
   770
{
slouken@3161
   771
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   772
    EGLBoolean status;
slouken@3161
   773
slouken@3161
   774
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   775
        SDL_SetError("PND: EGL initialization failed, no OpenGL ES support");
slouken@3161
   776
        return -1;
slouken@3161
   777
    }
slouken@3161
   778
slouken@3161
   779
    /* Check if OpenGL ES connection has been initialized */
slouken@3161
   780
    if (phdata->egl_display != EGL_NO_DISPLAY) {
slouken@3161
   781
        /* Set swap OpenGL ES interval */
slouken@3161
   782
        status = eglSwapInterval(phdata->egl_display, interval);
slouken@3161
   783
        if (status == EGL_TRUE) {
slouken@3161
   784
            /* Return success to upper level */
slouken@3161
   785
            phdata->swapinterval = interval;
slouken@3161
   786
            return 0;
slouken@3161
   787
        }
slouken@3161
   788
    }
slouken@3161
   789
slouken@3161
   790
    /* Failed to set swap interval */
slouken@3161
   791
    SDL_SetError("PND: Cannot set swap interval");
slouken@3161
   792
    return -1;
slouken@3161
   793
}
slouken@3161
   794
slouken@3161
   795
int
slouken@3161
   796
PND_gl_getswapinterval(_THIS)
slouken@3161
   797
{
slouken@3161
   798
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   799
slouken@3161
   800
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   801
        SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
slouken@3161
   802
        return -1;
slouken@3161
   803
    }
slouken@3161
   804
slouken@3161
   805
    /* Return default swap interval value */
slouken@3161
   806
    return phdata->swapinterval;
slouken@3161
   807
}
slouken@3161
   808
slouken@3161
   809
void
slouken@3161
   810
PND_gl_swapwindow(_THIS, SDL_Window * window)
slouken@3161
   811
{
slouken@3161
   812
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   813
    SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
slouken@3161
   814
    SDL_DisplayData *didata =
slouken@3161
   815
        (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
slouken@3161
   816
slouken@3161
   817
slouken@3161
   818
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   819
        SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
slouken@3161
   820
        return;
slouken@3161
   821
    }
slouken@3161
   822
slouken@3161
   823
    /* Many applications do not uses glFinish(), so we call it for them */
slouken@3161
   824
    glFinish();
slouken@3161
   825
slouken@3161
   826
    /* Wait until OpenGL ES rendering is completed */
slouken@3161
   827
    eglWaitGL();
slouken@3161
   828
slouken@3161
   829
    eglSwapBuffers(phdata->egl_display, wdata->gles_surface);
slouken@3161
   830
}
slouken@3161
   831
slouken@3161
   832
void
slouken@3161
   833
PND_gl_deletecontext(_THIS, SDL_GLContext context)
slouken@3161
   834
{
slouken@3161
   835
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   836
    EGLBoolean status;
slouken@3161
   837
slouken@3161
   838
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   839
        SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
slouken@3161
   840
        return;
slouken@3161
   841
    }
slouken@3161
   842
slouken@3161
   843
    /* Check if OpenGL ES connection has been initialized */
slouken@3161
   844
    if (phdata->egl_display != EGL_NO_DISPLAY) {
slouken@3161
   845
        if (context != EGL_NO_CONTEXT) {
slouken@3161
   846
            status = eglDestroyContext(phdata->egl_display, context);
slouken@3161
   847
            if (status != EGL_TRUE) {
slouken@3161
   848
                /* Error during OpenGL ES context destroying */
slouken@3161
   849
                SDL_SetError("PND: OpenGL ES context destroy error");
slouken@3161
   850
                return;
slouken@3161
   851
            }
slouken@3161
   852
        }
slouken@3161
   853
    }
slouken@3161
   854
slouken@3161
   855
    return;
slouken@3161
   856
}
slouken@3161
   857
slouken@3161
   858
/* vi: set ts=4 sw=4 expandtab: */