src/video/pandora/SDL_pandora.c
author Sam Lantinga <slouken@libsdl.org>
Mon, 31 Oct 2011 05:56:58 -0400
changeset 6044 35448a5ea044
parent 5535 96594ac5fd1a
child 6138 4c64952a58fb
permissions -rw-r--r--
Lots of fixes importing SDL source wholesale into a new iOS project
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2011 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_config.h"
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#if SDL_VIDEO_DRIVER_PANDORA
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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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/* PND declarations */
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#include "SDL_pandora.h"
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#include "SDL_pandora_events.h"
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/* WIZ declarations */
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#include "GLES/gl.h"
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#ifdef WIZ_GLES_LITE
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static NativeWindowType hNativeWnd = 0; // A handle to the window we will create.
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#endif
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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 = 0;
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    device->current_display = 0;
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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->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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#ifdef WIZ_GLES_LITE
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    "wiz",
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    "SDL Wiz Video Driver",
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#else
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    "pandora",
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    "SDL Pandora Video Driver",
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#endif
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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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#ifdef WIZ_GLES_LITE
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    current_mode.w = 320;
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    current_mode.h = 240;
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#else
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    current_mode.w = 800;
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    current_mode.h = 480;
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#endif
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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, SDL_VideoDisplay * display)
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{
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}
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int
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PND_setdisplaymode(_THIS, SDL_VideoDisplay * display, 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_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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    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
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    eglTerminate(phdata->egl_display);
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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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    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
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    eglTerminate(phdata->egl_display);
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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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#ifdef WIZ_GLES_LITE
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	path = "/lib/libopengles_lite.so";
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#else
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        path = "/usr/lib/libGLES_CM.so";
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#endif
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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)
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{
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    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
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    void *function_address;
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    /* Try to get function address through the egl interface */
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    function_address = eglGetProcAddress(proc);
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    if (function_address != NULL) {
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        return function_address;
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    }
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    /* Then try to get function in the OpenGL ES library */
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    if (_this->gl_config.dll_handle) {
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        function_address =
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   384
            SDL_LoadFunction(_this->gl_config.dll_handle, proc);
slouken@3161
   385
        if (function_address != NULL) {
slouken@3161
   386
            return function_address;
slouken@3161
   387
        }
slouken@3161
   388
    }
slouken@3161
   389
slouken@3161
   390
    /* Failed to get GL ES function address pointer */
slouken@3161
   391
    SDL_SetError("PND: Cannot locate OpenGL ES function name");
slouken@3161
   392
    return NULL;
slouken@3161
   393
}
slouken@3161
   394
slouken@3161
   395
void
slouken@3161
   396
PND_gl_unloadlibrary(_THIS)
slouken@3161
   397
{
slouken@3161
   398
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   399
slouken@3161
   400
    if (phdata->egl_initialized == SDL_TRUE) {
slouken@3161
   401
        /* Unload OpenGL ES library */
slouken@3161
   402
        if (_this->gl_config.dll_handle) {
slouken@3161
   403
            SDL_UnloadObject(_this->gl_config.dll_handle);
slouken@3161
   404
            _this->gl_config.dll_handle = NULL;
slouken@3161
   405
        }
slouken@3161
   406
    } else {
slouken@3161
   407
        SDL_SetError("PND: GF initialization failed, no OpenGL ES support");
slouken@3161
   408
    }
slouken@3161
   409
}
slouken@3161
   410
slouken@3161
   411
SDL_GLContext
slouken@3161
   412
PND_gl_createcontext(_THIS, SDL_Window * window)
slouken@3161
   413
{
slouken@3161
   414
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   415
    SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
slouken@3161
   416
    SDL_DisplayData *didata =
slouken@5246
   417
        (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata;
slouken@3161
   418
    EGLBoolean status;
slouken@3161
   419
    int32_t gfstatus;
slouken@3161
   420
    EGLint configs;
slouken@3161
   421
    uint32_t attr_pos;
slouken@3161
   422
    EGLint attr_value;
slouken@3161
   423
    EGLint cit;
slouken@3161
   424
slouken@3161
   425
    /* Check if EGL was initialized */
slouken@3161
   426
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   427
        SDL_SetError("PND: EGL initialization failed, no OpenGL ES support");
slouken@3161
   428
        return NULL;
slouken@3161
   429
    }
slouken@3161
   430
slouken@3161
   431
    /* Prepare attributes list to pass them to OpenGL ES */
slouken@3161
   432
    attr_pos = 0;
slouken@3161
   433
    wdata->gles_attributes[attr_pos++] = EGL_SURFACE_TYPE;
slouken@3161
   434
    wdata->gles_attributes[attr_pos++] = EGL_WINDOW_BIT;
slouken@3161
   435
    wdata->gles_attributes[attr_pos++] = EGL_RED_SIZE;
slouken@3161
   436
    wdata->gles_attributes[attr_pos++] = _this->gl_config.red_size;
slouken@3161
   437
    wdata->gles_attributes[attr_pos++] = EGL_GREEN_SIZE;
slouken@3161
   438
    wdata->gles_attributes[attr_pos++] = _this->gl_config.green_size;
slouken@3161
   439
    wdata->gles_attributes[attr_pos++] = EGL_BLUE_SIZE;
slouken@3161
   440
    wdata->gles_attributes[attr_pos++] = _this->gl_config.blue_size;
slouken@3161
   441
    wdata->gles_attributes[attr_pos++] = EGL_ALPHA_SIZE;
slouken@3161
   442
slouken@3161
   443
    /* Setup alpha size in bits */
slouken@3161
   444
    if (_this->gl_config.alpha_size) {
slouken@3161
   445
        wdata->gles_attributes[attr_pos++] = _this->gl_config.alpha_size;
slouken@3161
   446
    } else {
slouken@3161
   447
        wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   448
    }
slouken@3161
   449
slouken@3161
   450
    /* Setup color buffer size */
slouken@3161
   451
    if (_this->gl_config.buffer_size) {
slouken@3161
   452
        wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
slouken@3161
   453
        wdata->gles_attributes[attr_pos++] = _this->gl_config.buffer_size;
slouken@3161
   454
    } else {
slouken@3161
   455
        wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
slouken@3161
   456
        wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   457
    }
slouken@3161
   458
slouken@3161
   459
    /* Setup depth buffer bits */
slouken@3161
   460
    wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
slouken@3161
   461
    wdata->gles_attributes[attr_pos++] = _this->gl_config.depth_size;
slouken@3161
   462
slouken@3161
   463
    /* Setup stencil bits */
slouken@3161
   464
    if (_this->gl_config.stencil_size) {
slouken@3161
   465
        wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   466
        wdata->gles_attributes[attr_pos++] = _this->gl_config.buffer_size;
slouken@3161
   467
    } else {
slouken@3161
   468
        wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   469
        wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   470
    }
slouken@3161
   471
slouken@3161
   472
    /* Set number of samples in multisampling */
slouken@3161
   473
    if (_this->gl_config.multisamplesamples) {
slouken@3161
   474
        wdata->gles_attributes[attr_pos++] = EGL_SAMPLES;
slouken@3161
   475
        wdata->gles_attributes[attr_pos++] =
slouken@3161
   476
            _this->gl_config.multisamplesamples;
slouken@3161
   477
    }
slouken@3161
   478
slouken@3161
   479
    /* Multisample buffers, OpenGL ES 1.0 spec defines 0 or 1 buffer */
slouken@3161
   480
    if (_this->gl_config.multisamplebuffers) {
slouken@3161
   481
        wdata->gles_attributes[attr_pos++] = EGL_SAMPLE_BUFFERS;
slouken@3161
   482
        wdata->gles_attributes[attr_pos++] =
slouken@3161
   483
            _this->gl_config.multisamplebuffers;
slouken@3161
   484
    }
slouken@3161
   485
slouken@3161
   486
    /* Finish attributes list */
slouken@3161
   487
    wdata->gles_attributes[attr_pos] = EGL_NONE;
slouken@3161
   488
slouken@3161
   489
    /* Request first suitable framebuffer configuration */
slouken@3161
   490
    status = eglChooseConfig(phdata->egl_display, wdata->gles_attributes,
slouken@3161
   491
                             wdata->gles_configs, 1, &configs);
slouken@3161
   492
    if (status != EGL_TRUE) {
slouken@3161
   493
        SDL_SetError("PND: Can't find closest configuration for OpenGL ES");
slouken@3161
   494
        return NULL;
slouken@3161
   495
    }
slouken@3161
   496
slouken@3161
   497
    /* Check if nothing has been found, try "don't care" settings */
slouken@3161
   498
    if (configs == 0) {
slouken@3161
   499
        int32_t it;
slouken@3161
   500
        int32_t jt;
slouken@3161
   501
        GLint depthbits[4] = { 32, 24, 16, EGL_DONT_CARE };
slouken@3161
   502
slouken@3161
   503
        for (it = 0; it < 4; it++) {
slouken@3161
   504
            for (jt = 16; jt >= 0; jt--) {
slouken@3161
   505
                /* Don't care about color buffer bits, use what exist */
slouken@3161
   506
                /* Replace previous set data with EGL_DONT_CARE       */
slouken@3161
   507
                attr_pos = 0;
slouken@3161
   508
                wdata->gles_attributes[attr_pos++] = EGL_SURFACE_TYPE;
slouken@3161
   509
                wdata->gles_attributes[attr_pos++] = EGL_WINDOW_BIT;
slouken@3161
   510
                wdata->gles_attributes[attr_pos++] = EGL_RED_SIZE;
slouken@3161
   511
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   512
                wdata->gles_attributes[attr_pos++] = EGL_GREEN_SIZE;
slouken@3161
   513
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   514
                wdata->gles_attributes[attr_pos++] = EGL_BLUE_SIZE;
slouken@3161
   515
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   516
                wdata->gles_attributes[attr_pos++] = EGL_ALPHA_SIZE;
slouken@3161
   517
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   518
                wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
slouken@3161
   519
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   520
slouken@3161
   521
                /* Try to find requested or smallest depth */
slouken@3161
   522
                if (_this->gl_config.depth_size) {
slouken@3161
   523
                    wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
slouken@3161
   524
                    wdata->gles_attributes[attr_pos++] = depthbits[it];
slouken@3161
   525
                } else {
slouken@3161
   526
                    wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
slouken@3161
   527
                    wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   528
                }
slouken@3161
   529
slouken@3161
   530
                if (_this->gl_config.stencil_size) {
slouken@3161
   531
                    wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   532
                    wdata->gles_attributes[attr_pos++] = jt;
slouken@3161
   533
                } else {
slouken@3161
   534
                    wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
slouken@3161
   535
                    wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   536
                }
slouken@3161
   537
slouken@3161
   538
                wdata->gles_attributes[attr_pos++] = EGL_SAMPLES;
slouken@3161
   539
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   540
                wdata->gles_attributes[attr_pos++] = EGL_SAMPLE_BUFFERS;
slouken@3161
   541
                wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
slouken@3161
   542
                wdata->gles_attributes[attr_pos] = EGL_NONE;
slouken@3161
   543
slouken@3161
   544
                /* Request first suitable framebuffer configuration */
slouken@3161
   545
                status =
slouken@3161
   546
                    eglChooseConfig(phdata->egl_display,
slouken@3161
   547
                                    wdata->gles_attributes,
slouken@3161
   548
                                    wdata->gles_configs, 1, &configs);
slouken@3161
   549
slouken@3161
   550
                if (status != EGL_TRUE) {
slouken@3161
   551
                    SDL_SetError
slouken@3161
   552
                        ("PND: Can't find closest configuration for OpenGL ES");
slouken@3161
   553
                    return NULL;
slouken@3161
   554
                }
slouken@3161
   555
                if (configs != 0) {
slouken@3161
   556
                    break;
slouken@3161
   557
                }
slouken@3161
   558
            }
slouken@3161
   559
            if (configs != 0) {
slouken@3161
   560
                break;
slouken@3161
   561
            }
slouken@3161
   562
        }
slouken@3161
   563
slouken@3161
   564
        /* No available configs */
slouken@3161
   565
        if (configs == 0) {
slouken@3161
   566
            SDL_SetError("PND: Can't find any configuration for OpenGL ES");
slouken@3161
   567
            return NULL;
slouken@3161
   568
        }
slouken@3161
   569
    }
slouken@3161
   570
slouken@3161
   571
    /* Initialize config index */
slouken@3161
   572
    wdata->gles_config = 0;
slouken@3161
   573
slouken@3161
   574
    /* Now check each configuration to find out the best */
slouken@3161
   575
    for (cit = 0; cit < configs; cit++) {
slouken@3161
   576
        uint32_t stencil_found;
slouken@3161
   577
        uint32_t depth_found;
slouken@3161
   578
slouken@3161
   579
        stencil_found = 0;
slouken@3161
   580
        depth_found = 0;
slouken@3161
   581
slouken@3161
   582
        if (_this->gl_config.stencil_size) {
slouken@3161
   583
            status =
slouken@3161
   584
                eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   585
                                   wdata->gles_configs[cit], EGL_STENCIL_SIZE,
slouken@3161
   586
                                   &attr_value);
slouken@3161
   587
            if (status == EGL_TRUE) {
slouken@3161
   588
                if (attr_value != 0) {
slouken@3161
   589
                    stencil_found = 1;
slouken@3161
   590
                }
slouken@3161
   591
            }
slouken@3161
   592
        } else {
slouken@3161
   593
            stencil_found = 1;
slouken@3161
   594
        }
slouken@3161
   595
slouken@3161
   596
        if (_this->gl_config.depth_size) {
slouken@3161
   597
            status =
slouken@3161
   598
                eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   599
                                   wdata->gles_configs[cit], EGL_DEPTH_SIZE,
slouken@3161
   600
                                   &attr_value);
slouken@3161
   601
            if (status == EGL_TRUE) {
slouken@3161
   602
                if (attr_value != 0) {
slouken@3161
   603
                    depth_found = 1;
slouken@3161
   604
                }
slouken@3161
   605
            }
slouken@3161
   606
        } else {
slouken@3161
   607
            depth_found = 1;
slouken@3161
   608
        }
slouken@3161
   609
slouken@3161
   610
        /* Exit from loop if found appropriate configuration */
slouken@3161
   611
        if ((depth_found != 0) && (stencil_found != 0)) {
slouken@3161
   612
            break;
slouken@3161
   613
        }
slouken@3161
   614
    }
slouken@3161
   615
slouken@3161
   616
    /* If best could not be found, use first */
slouken@3161
   617
    if (cit == configs) {
slouken@3161
   618
        cit = 0;
slouken@3161
   619
    }
slouken@3161
   620
    wdata->gles_config = cit;
slouken@3161
   621
slouken@3161
   622
    /* Create OpenGL ES context */
slouken@3161
   623
    wdata->gles_context =
slouken@3161
   624
        eglCreateContext(phdata->egl_display,
slouken@3161
   625
                         wdata->gles_configs[wdata->gles_config], NULL, NULL);
slouken@3161
   626
    if (wdata->gles_context == EGL_NO_CONTEXT) {
slouken@3161
   627
        SDL_SetError("PND: OpenGL ES context creation has been failed");
slouken@3161
   628
        return NULL;
slouken@3161
   629
    }
slouken@3161
   630
slouken@3438
   631
#ifdef WIZ_GLES_LITE
slouken@3438
   632
    if( !hNativeWnd ) {
slouken@3438
   633
	hNativeWnd = (NativeWindowType)malloc(16*1024);
slouken@3438
   634
slouken@3438
   635
	if(!hNativeWnd)
slouken@3438
   636
	    printf( "Error : Wiz framebuffer allocatation failed\n" ); 
slouken@3438
   637
	else
slouken@3438
   638
	    printf( "SDL13: Wiz framebuffer allocated: %X\n", hNativeWnd );
slouken@3438
   639
    }
slouken@3438
   640
    else {
slouken@3438
   641
	printf( "SDL13: Wiz framebuffer already allocated: %X\n", hNativeWnd );
slouken@3438
   642
    }
slouken@3438
   643
slouken@3438
   644
    wdata->gles_surface =
slouken@3438
   645
	eglCreateWindowSurface(phdata->egl_display, 
slouken@3438
   646
			       wdata->gles_configs[wdata->gles_config],
slouken@3438
   647
			       hNativeWnd, NULL );
slouken@3438
   648
#else
slouken@3161
   649
    wdata->gles_surface =
slouken@3161
   650
        eglCreateWindowSurface(phdata->egl_display,
slouken@3161
   651
                               wdata->gles_configs[wdata->gles_config],
slouken@3161
   652
                               (NativeWindowType) 0, NULL);
slouken@3438
   653
#endif
slouken@3438
   654
slouken@3438
   655
slouken@3161
   656
    if (wdata->gles_surface == 0) {
slouken@3161
   657
        SDL_SetError("Error : eglCreateWindowSurface failed;\n");
slouken@3161
   658
        return NULL;
slouken@3161
   659
    }
slouken@3161
   660
slouken@3161
   661
    /* Make just created context current */
slouken@3161
   662
    status =
slouken@3161
   663
        eglMakeCurrent(phdata->egl_display, wdata->gles_surface,
slouken@3161
   664
                       wdata->gles_surface, wdata->gles_context);
slouken@3161
   665
    if (status != EGL_TRUE) {
slouken@3161
   666
        /* Destroy OpenGL ES surface */
slouken@3161
   667
        eglDestroySurface(phdata->egl_display, wdata->gles_surface);
slouken@3161
   668
        eglDestroyContext(phdata->egl_display, wdata->gles_context);
slouken@3161
   669
        wdata->gles_context = EGL_NO_CONTEXT;
slouken@3161
   670
        SDL_SetError("PND: Can't set OpenGL ES context on creation");
slouken@3161
   671
        return NULL;
slouken@3161
   672
    }
slouken@3161
   673
slouken@3161
   674
    _this->gl_config.accelerated = 1;
slouken@3161
   675
slouken@3161
   676
    /* Always clear stereo enable, since OpenGL ES do not supports stereo */
slouken@3161
   677
    _this->gl_config.stereo = 0;
slouken@3161
   678
slouken@3161
   679
    /* Get back samples and samplebuffers configurations. Rest framebuffer */
slouken@3161
   680
    /* parameters could be obtained through the OpenGL ES API              */
slouken@3161
   681
    status =
slouken@3161
   682
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   683
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   684
                           EGL_SAMPLES, &attr_value);
slouken@3161
   685
    if (status == EGL_TRUE) {
slouken@3161
   686
        _this->gl_config.multisamplesamples = attr_value;
slouken@3161
   687
    }
slouken@3161
   688
    status =
slouken@3161
   689
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   690
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   691
                           EGL_SAMPLE_BUFFERS, &attr_value);
slouken@3161
   692
    if (status == EGL_TRUE) {
slouken@3161
   693
        _this->gl_config.multisamplebuffers = attr_value;
slouken@3161
   694
    }
slouken@3161
   695
slouken@3161
   696
    /* Get back stencil and depth buffer sizes */
slouken@3161
   697
    status =
slouken@3161
   698
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   699
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   700
                           EGL_DEPTH_SIZE, &attr_value);
slouken@3161
   701
    if (status == EGL_TRUE) {
slouken@3161
   702
        _this->gl_config.depth_size = attr_value;
slouken@3161
   703
    }
slouken@3161
   704
    status =
slouken@3161
   705
        eglGetConfigAttrib(phdata->egl_display,
slouken@3161
   706
                           wdata->gles_configs[wdata->gles_config],
slouken@3161
   707
                           EGL_STENCIL_SIZE, &attr_value);
slouken@3161
   708
    if (status == EGL_TRUE) {
slouken@3161
   709
        _this->gl_config.stencil_size = attr_value;
slouken@3161
   710
    }
slouken@3161
   711
slouken@3161
   712
    /* Under PND OpenGL ES output can't be double buffered */
slouken@3161
   713
    _this->gl_config.double_buffer = 0;
slouken@3161
   714
slouken@3161
   715
    /* GL ES context was successfully created */
slouken@3161
   716
    return wdata->gles_context;
slouken@3161
   717
}
slouken@3161
   718
slouken@3161
   719
int
slouken@3161
   720
PND_gl_makecurrent(_THIS, SDL_Window * window, SDL_GLContext context)
slouken@3161
   721
{
slouken@3161
   722
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   723
    SDL_WindowData *wdata;
slouken@3161
   724
    EGLBoolean status;
slouken@3161
   725
slouken@3161
   726
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   727
        SDL_SetError("PND: GF initialization failed, no OpenGL ES support");
slouken@3161
   728
        return -1;
slouken@3161
   729
    }
slouken@3161
   730
slouken@3161
   731
    if ((window == NULL) && (context == NULL)) {
slouken@3161
   732
        status =
slouken@3161
   733
            eglMakeCurrent(phdata->egl_display, EGL_NO_SURFACE,
slouken@3161
   734
                           EGL_NO_SURFACE, EGL_NO_CONTEXT);
slouken@3161
   735
        if (status != EGL_TRUE) {
slouken@3161
   736
            /* Failed to set current GL ES context */
slouken@3161
   737
            SDL_SetError("PND: Can't set OpenGL ES context");
slouken@3161
   738
            return -1;
slouken@3161
   739
        }
slouken@3161
   740
    } else {
slouken@3161
   741
        wdata = (SDL_WindowData *) window->driverdata;
slouken@3161
   742
        if (wdata->gles_surface == EGL_NO_SURFACE) {
slouken@3161
   743
            SDL_SetError
slouken@3161
   744
                ("PND: OpenGL ES surface is not initialized for this window");
slouken@3161
   745
            return -1;
slouken@3161
   746
        }
slouken@3161
   747
        if (wdata->gles_context == EGL_NO_CONTEXT) {
slouken@3161
   748
            SDL_SetError
slouken@3161
   749
                ("PND: OpenGL ES context is not initialized for this window");
slouken@3161
   750
            return -1;
slouken@3161
   751
        }
slouken@3161
   752
        if (wdata->gles_context != context) {
slouken@3161
   753
            SDL_SetError
slouken@3161
   754
                ("PND: OpenGL ES context is not belong to this window");
slouken@3161
   755
            return -1;
slouken@3161
   756
        }
slouken@3161
   757
        status =
slouken@3161
   758
            eglMakeCurrent(phdata->egl_display, wdata->gles_surface,
slouken@3161
   759
                           wdata->gles_surface, wdata->gles_context);
slouken@3161
   760
        if (status != EGL_TRUE) {
slouken@3161
   761
            /* Failed to set current GL ES context */
slouken@3161
   762
            SDL_SetError("PND: Can't set OpenGL ES context");
slouken@3161
   763
            return -1;
slouken@3161
   764
        }
slouken@3161
   765
    }
slouken@3161
   766
    return 0;
slouken@3161
   767
}
slouken@3161
   768
slouken@3161
   769
int
slouken@3161
   770
PND_gl_setswapinterval(_THIS, int interval)
slouken@3161
   771
{
slouken@3161
   772
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   773
    EGLBoolean status;
slouken@3161
   774
slouken@3161
   775
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   776
        SDL_SetError("PND: EGL initialization failed, no OpenGL ES support");
slouken@3161
   777
        return -1;
slouken@3161
   778
    }
slouken@3161
   779
slouken@3161
   780
    /* Check if OpenGL ES connection has been initialized */
slouken@3161
   781
    if (phdata->egl_display != EGL_NO_DISPLAY) {
slouken@3161
   782
        /* Set swap OpenGL ES interval */
slouken@3161
   783
        status = eglSwapInterval(phdata->egl_display, interval);
slouken@3161
   784
        if (status == EGL_TRUE) {
slouken@3161
   785
            /* Return success to upper level */
slouken@3161
   786
            phdata->swapinterval = interval;
slouken@3161
   787
            return 0;
slouken@3161
   788
        }
slouken@3161
   789
    }
slouken@3161
   790
slouken@3161
   791
    /* Failed to set swap interval */
slouken@3161
   792
    SDL_SetError("PND: Cannot set swap interval");
slouken@3161
   793
    return -1;
slouken@3161
   794
}
slouken@3161
   795
slouken@3161
   796
int
slouken@3161
   797
PND_gl_getswapinterval(_THIS)
slouken@3161
   798
{
slouken@3161
   799
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   800
slouken@3161
   801
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   802
        SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
slouken@3161
   803
        return -1;
slouken@3161
   804
    }
slouken@3161
   805
slouken@3161
   806
    /* Return default swap interval value */
slouken@3161
   807
    return phdata->swapinterval;
slouken@3161
   808
}
slouken@3161
   809
slouken@3161
   810
void
slouken@3161
   811
PND_gl_swapwindow(_THIS, SDL_Window * window)
slouken@3161
   812
{
slouken@3161
   813
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   814
    SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
slouken@3161
   815
    SDL_DisplayData *didata =
slouken@5246
   816
        (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata;
slouken@3161
   817
slouken@3161
   818
slouken@3161
   819
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   820
        SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
slouken@3161
   821
        return;
slouken@3161
   822
    }
slouken@3161
   823
slouken@3161
   824
    /* Many applications do not uses glFinish(), so we call it for them */
slouken@3161
   825
    glFinish();
slouken@3161
   826
slouken@3161
   827
    /* Wait until OpenGL ES rendering is completed */
slouken@3161
   828
    eglWaitGL();
slouken@3161
   829
slouken@3161
   830
    eglSwapBuffers(phdata->egl_display, wdata->gles_surface);
slouken@3161
   831
}
slouken@3161
   832
slouken@3161
   833
void
slouken@3161
   834
PND_gl_deletecontext(_THIS, SDL_GLContext context)
slouken@3161
   835
{
slouken@3161
   836
    SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
slouken@3161
   837
    EGLBoolean status;
slouken@3161
   838
slouken@3161
   839
    if (phdata->egl_initialized != SDL_TRUE) {
slouken@3161
   840
        SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
slouken@3161
   841
        return;
slouken@3161
   842
    }
slouken@3161
   843
slouken@3161
   844
    /* Check if OpenGL ES connection has been initialized */
slouken@3161
   845
    if (phdata->egl_display != EGL_NO_DISPLAY) {
slouken@3161
   846
        if (context != EGL_NO_CONTEXT) {
slouken@3161
   847
            status = eglDestroyContext(phdata->egl_display, context);
slouken@3161
   848
            if (status != EGL_TRUE) {
slouken@3161
   849
                /* Error during OpenGL ES context destroying */
slouken@3161
   850
                SDL_SetError("PND: OpenGL ES context destroy error");
slouken@3161
   851
                return;
slouken@3161
   852
            }
slouken@3161
   853
        }
slouken@3161
   854
    }
slouken@3161
   855
slouken@3438
   856
#ifdef WIZ_GLES_LITE
slouken@3438
   857
    if( hNativeWnd != 0 )
slouken@3438
   858
    {
slouken@3438
   859
	  free(hNativeWnd);
slouken@3438
   860
	  hNativeWnd = 0;
slouken@3438
   861
	  printf( "SDL13: Wiz framebuffer released\n" );
slouken@3438
   862
    }
slouken@3438
   863
#endif
slouken@3438
   864
slouken@3161
   865
    return;
slouken@3161
   866
}
slouken@3161
   867
slouken@6044
   868
#endif /* SDL_VIDEO_DRIVER_PANDORA */
slouken@6044
   869
slouken@3161
   870
/* vi: set ts=4 sw=4 expandtab: */