view src/video/photon/SDL_ph_video.c @ 910:4ab6d1fd028f

Date: Sat, 26 Jun 2004 14:58:42 +0300 From: "Mike Gorchak" Subject: QNX 6.3 fixes for SDL Sam, I've added new OpenGL framework for SDL, which appeared in the new QNX version - 6.3. I've leave compatibility with previous QNX versions. And I've moved all GL specific functions to the separate module, like it done for the other platforms. SDL is now ready for the QNX 6.3 :)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Jul 2004 19:46:38 +0000
parents 05c551e5bc64
children c9b51268668f
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>

#include "SDL.h"
#include "SDL_error.h"
#include "SDL_timer.h"
#include "SDL_thread.h"
#include "SDL_video.h"
#include "SDL_mouse.h"
#include "SDL_endian.h"
#include "SDL_sysvideo.h"
#include "SDL_pixels_c.h"
#include "SDL_events_c.h"
#include "SDL_ph_video.h"
#include "SDL_ph_modes_c.h"
#include "SDL_ph_image_c.h"
#include "SDL_ph_events_c.h"
#include "SDL_ph_mouse_c.h"
#include "SDL_ph_wm_c.h"
#include "SDL_ph_gl.h"
#include "SDL_phyuv_c.h"
#include "blank_cursor.h"

static int  ph_VideoInit(_THIS, SDL_PixelFormat *vformat);
static SDL_Surface *ph_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
static int  ph_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
static void ph_VideoQuit(_THIS);
static void ph_DeleteDevice(SDL_VideoDevice *device);

static int phstatus=-1;

static int ph_Available(void)
{
    if (phstatus!=0)
    {
        phstatus=PtInit(NULL);
        if (phstatus==0)
        {
           return 1;
        }
        else
        {
           return 0;
        }
    }
    return 1;
}

static SDL_VideoDevice* ph_CreateDevice(int devindex)
{
    SDL_VideoDevice* device;

    /* Initialize all variables that we clean on shutdown */
    device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
    if (device)
    {
        memset(device, 0, (sizeof *device));
        device->hidden = (struct SDL_PrivateVideoData*)malloc((sizeof *device->hidden));
        device->gl_data = NULL;
    }
    if ((device == NULL) || (device->hidden == NULL))
    {
        SDL_OutOfMemory();
        ph_DeleteDevice(device);
        return NULL;
    }
    memset(device->hidden, 0, (sizeof *device->hidden));

    /* Set the driver flags */
    device->handles_any_size = 1;

    /* Set the function pointers */
    device->CreateYUVOverlay = ph_CreateYUVOverlay;
    device->VideoInit = ph_VideoInit;
    device->ListModes = ph_ListModes;
    device->SetVideoMode = ph_SetVideoMode;
    device->ToggleFullScreen = ph_ToggleFullScreen;
    device->UpdateMouse = ph_UpdateMouse;
    device->SetColors = ph_SetColors;
    device->UpdateRects = NULL;                        /* set up in ph_SetupUpdateFunction */
    device->VideoQuit = ph_VideoQuit;
    device->AllocHWSurface = ph_AllocHWSurface;
    device->CheckHWBlit = ph_CheckHWBlit;
    device->FillHWRect = ph_FillHWRect;
    device->SetHWColorKey = ph_SetHWColorKey;
    device->SetHWAlpha = ph_SetHWAlpha;
    device->LockHWSurface = ph_LockHWSurface;
    device->UnlockHWSurface = ph_UnlockHWSurface;
    device->FlipHWSurface = ph_FlipHWSurface;
    device->FreeHWSurface = ph_FreeHWSurface;
    device->SetCaption = ph_SetCaption;
    device->SetIcon = NULL;
    device->IconifyWindow = ph_IconifyWindow;
    device->GrabInput = ph_GrabInput;
    device->GetWMInfo = ph_GetWMInfo;
    device->FreeWMCursor = ph_FreeWMCursor;
    device->CreateWMCursor = ph_CreateWMCursor;
    device->ShowWMCursor = ph_ShowWMCursor;
    device->WarpWMCursor = ph_WarpWMCursor;
    device->MoveWMCursor = NULL;
    device->CheckMouseMode = ph_CheckMouseMode;
    device->InitOSKeymap = ph_InitOSKeymap;
    device->PumpEvents = ph_PumpEvents;

    /* OpenGL support. */
#ifdef HAVE_OPENGL
    device->GL_MakeCurrent = ph_GL_MakeCurrent;
    device->GL_SwapBuffers = ph_GL_SwapBuffers;
    device->GL_GetAttribute = ph_GL_GetAttribute;
    device->GL_LoadLibrary = ph_GL_LoadLibrary;
    device->GL_GetProcAddress = ph_GL_GetProcAddress;
#else
    device->GL_MakeCurrent = NULL;
    device->GL_SwapBuffers = NULL;
    device->GL_GetAttribute = NULL;
    device->GL_LoadLibrary = NULL;
    device->GL_GetProcAddress = NULL;
#endif /* HAVE_OPENGL */

    device->free = ph_DeleteDevice;
    
    return device;
}

VideoBootStrap ph_bootstrap = {
    "photon", "QNX Photon video output",
    ph_Available, ph_CreateDevice
};

static void ph_DeleteDevice(SDL_VideoDevice *device)
{
    if (device)
    {
        if (device->hidden)
        {
            free(device->hidden);
            device->hidden = NULL;
        }
        if (device->gl_data)
        {
            free(device->gl_data);
            device->gl_data = NULL;
        }
        free(device);
        device = NULL;
    }
}

static PtWidget_t *ph_CreateWindow(_THIS)
{
    PtWidget_t *widget;
    
    widget = PtCreateWidget(PtWindow, NULL, 0, NULL);

    return widget;
}

static int ph_SetupWindow(_THIS, int w, int h, int flags)
{
    PtArg_t     args[32];
    PhPoint_t   pos = {0, 0};
    PhDim_t*    olddim;
    PhDim_t     dim = {w, h};
    PhRect_t    desktopextent;
    int         nargs = 0;
    const char* windowpos;
    const char* iscentered;
    int         x, y;

    /* check if window size has been changed by Window Manager */
    PtGetResource(window, Pt_ARG_DIM, &olddim, 0);
    if ((olddim->w!=w) || (olddim->h!=h))
    {
       PtSetArg(&args[nargs++], Pt_ARG_DIM, &dim, 0);
    }

    if ((flags & SDL_RESIZABLE) == SDL_RESIZABLE)
    {
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_FALSE, Ph_WM_CLOSE);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_MAX | Ph_WM_RESTORE | Ph_WM_RESIZE);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_TRUE, Ph_WM_RESIZE | Ph_WM_MOVE | Ph_WM_CLOSE | Ph_WM_MAX | Ph_WM_RESTORE);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_TRUE, Ph_WM_RENDER_RESIZE | Ph_WM_RENDER_MAX | Ph_WM_RENDER_COLLAPSE | Ph_WM_RENDER_RETURN);
        PtSetArg(&args[nargs++], Pt_ARG_RESIZE_FLAGS, Pt_TRUE, Pt_RESIZE_XY_AS_REQUIRED);
    }
    else
    {
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_FALSE, Ph_WM_RESIZE | Ph_WM_MAX | Ph_WM_RESTORE | Ph_WM_CLOSE);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_FALSE, Ph_WM_RESIZE | Ph_WM_MAX | Ph_WM_RESTORE);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_TRUE, Ph_WM_MOVE | Ph_WM_CLOSE);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_FALSE, Ph_WM_RENDER_RESIZE | Ph_WM_RENDER_MAX | Ph_WM_RENDER_COLLAPSE | Ph_WM_RENDER_RETURN);
        PtSetArg(&args[nargs++], Pt_ARG_RESIZE_FLAGS, Pt_FALSE, Pt_RESIZE_XY_AS_REQUIRED);
    }

    if (((flags & SDL_NOFRAME)==SDL_NOFRAME) || ((flags & SDL_FULLSCREEN)==SDL_FULLSCREEN))
    {
       if ((flags & SDL_RESIZABLE) != SDL_RESIZABLE)
       {
           PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_FALSE, Pt_TRUE);
       }
       else
       {
           PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_FALSE, Pt_TRUE);
           PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_TRUE, Ph_WM_RENDER_RESIZE | Ph_WM_RENDER_BORDER);
       }
    }
    else
    {
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_TRUE, Ph_WM_RENDER_BORDER | Ph_WM_RENDER_TITLE |
                                 Ph_WM_RENDER_CLOSE | Ph_WM_RENDER_MENU | Ph_WM_RENDER_MIN);
    }

    if ((flags & SDL_FULLSCREEN) == SDL_FULLSCREEN)
    {
        PtSetArg(&args[nargs++], Pt_ARG_POS, &pos, 0);
        PtSetArg(&args[nargs++], Pt_ARG_BASIC_FLAGS, Pt_TRUE, Pt_BASIC_PREVENT_FILL);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_FFRONT | Ph_WM_MAX | Ph_WM_TOFRONT | Ph_WM_CONSWITCH);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISFRONT | Ph_WM_STATE_ISFOCUS | Ph_WM_STATE_ISALTKEY);
    }
    else
    {
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_FALSE, Ph_WM_FFRONT | Ph_WM_CONSWITCH);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_FALSE, Ph_WM_STATE_ISFRONT);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISALTKEY);

        if ((flags & SDL_HWSURFACE) == SDL_HWSURFACE)
        {
            PtSetArg(&args[nargs++], Pt_ARG_BASIC_FLAGS, Pt_TRUE, Pt_BASIC_PREVENT_FILL);
        }
        else
        {
            PtSetArg(&args[nargs++], Pt_ARG_FILL_COLOR, Pg_BLACK, 0);
        }
        if (!currently_maximized)
        {
            windowpos = getenv("SDL_VIDEO_WINDOW_POS");
            iscentered = getenv("SDL_VIDEO_CENTERED");

            if ((iscentered) || ((windowpos) && (strcmp(windowpos, "center")==0)))
            {
                PhWindowQueryVisible(Ph_QUERY_CONSOLE, 0, 0, &desktopextent);
                if (desktop_mode.width>w)
                {
                    pos.x = (desktop_mode.width - w)/2;
                }
                if (desktop_mode.height>h)
                {
                    pos.y = (desktop_mode.height - h)/2;
                }

                pos.x+=desktopextent.ul.x;
                pos.y+=desktopextent.ul.y;
                PtSetArg(&args[nargs++], Pt_ARG_POS, &pos, 0);
            }
            else
            {
                if (windowpos)
                {
                    if (sscanf(windowpos, "%d,%d", &x, &y) == 2)
                    {
                        if ((x<desktop_mode.width) && (y<desktop_mode.height))
                        {
                            PhWindowQueryVisible(Ph_QUERY_CONSOLE, 0, 0, &desktopextent);
                            pos.x=x+desktopextent.ul.x;
                            pos.y=y+desktopextent.ul.y;
                        }
                        PtSetArg(&args[nargs++], Pt_ARG_POS, &pos, 0);
                    }
                }
            }
        }

        /* if window is maximized render it as maximized */
        if (currently_maximized)
        {
           PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISMAX);
        }
        else
        {
           PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_FALSE, Ph_WM_STATE_ISMAX);
        }

        /* do not grab the keyboard by default */
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_FALSE, Ph_WM_STATE_ISALTKEY);

        /* bring the focus to the window */
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISFOCUS);

        /* allow to catch hide event */
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_HIDE);
        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_TRUE, Ph_WM_HIDE);
    }

    PtSetResources(window, nargs, args);
    PtRealizeWidget(window);
    PtWindowToFront(window);

#if 0 /* FIXME */
    PtGetResource(window, Pt_ARG_POS, &olddim, 0);
    fprintf(stderr, "POSITION: %d, %d\n", olddim->w, olddim->h);
#endif

    return 0;
}

static const struct ColourMasks* ph_GetColourMasks(int bpp)
{
    /* The alpha mask doesn't appears to be needed */
    static const struct ColourMasks phColorMasks[5] = {
        /*  8 bit      */  {0, 0, 0, 0, 8},
        /* 15 bit ARGB */  {0x7C00, 0x03E0, 0x001F, 0x8000, 15},
        /* 16 bit  RGB */  {0xF800, 0x07E0, 0x001F, 0x0000, 16},
        /* 24 bit  RGB */  {0xFF0000, 0x00FF00, 0x0000FF, 0x000000, 24},
        /* 32 bit ARGB */  {0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000, 32},
    };

    switch (bpp)
    {
        case 8:
             return &phColorMasks[0];
        case 15:
             return &phColorMasks[1];
        case 16:
             return &phColorMasks[2];
        case 24:
             return &phColorMasks[3];
        case 32:
             return &phColorMasks[4];
    }
    return NULL;
}

static int ph_VideoInit(_THIS, SDL_PixelFormat* vformat)
{
    PgHWCaps_t hwcaps;
    int i;

    window=NULL;
    desktoppal=SDLPH_PAL_NONE;

#ifdef HAVE_OPENGL
    oglctx=NULL;
    oglbuffers=NULL;
    oglflags=0;
    oglbpp=0;
#endif /* HAVE_OPENGL */
    
    old_video_mode=-1;
    old_refresh_rate=-1;
	
    if (NULL == (event = malloc(EVENT_SIZE)))
    {
        SDL_OutOfMemory();
        return -1;
    }
    memset(event, 0x00, EVENT_SIZE);

    window = ph_CreateWindow(this);
    if (window == NULL)
    {
        SDL_SetError("ph_VideoInit(): Couldn't create video window !\n");
        return -1;
    }

    /* Create the blank cursor */
    SDL_BlankCursor = this->CreateWMCursor(this, blank_cdata, blank_cmask,
                                          (int)BLANK_CWIDTH, (int)BLANK_CHEIGHT,
                                          (int)BLANK_CHOTX, (int)BLANK_CHOTY);

    if (SDL_BlankCursor == NULL)
    {
        return -1;
    }

    if (PgGetGraphicsHWCaps(&hwcaps) < 0)
    {
        SDL_SetError("ph_VideoInit(): GetGraphicsHWCaps function failed !\n");
        this->FreeWMCursor(this, SDL_BlankCursor);
        return -1;
    }

    if (PgGetVideoModeInfo(hwcaps.current_video_mode, &desktop_mode) < 0)
    {
        SDL_SetError("ph_VideoInit(): PgGetVideoModeInfo function failed !\n");
        this->FreeWMCursor(this, SDL_BlankCursor);
        return -1;
    }

    /* We need to return BytesPerPixel as it in used by CreateRGBsurface */
    vformat->BitsPerPixel = desktop_mode.bits_per_pixel;
    vformat->BytesPerPixel = desktop_mode.bytes_per_scanline/desktop_mode.width;
    desktopbpp = desktop_mode.bits_per_pixel;
    
    /* save current palette */
    if (desktopbpp==8)
    {
        PgGetPalette(savedpal);
        PgGetPalette(syspalph);
    }
    else
    {
        for(i=0; i<_Pg_MAX_PALETTE; i++)
        {
            savedpal[i]=PgRGB(0, 0, 0);
            syspalph[i]=PgRGB(0, 0, 0);
        }
    }
         
    currently_fullscreen = 0;
    currently_hided = 0;
    currently_maximized = 0;
    current_overlay = NULL;

    OCImage.direct_context = NULL;
    OCImage.offscreen_context = NULL;
    OCImage.offscreen_backcontext = NULL;
    OCImage.oldDC = NULL;
    OCImage.CurrentFrameData = NULL;
    OCImage.FrameData0 = NULL;
    OCImage.FrameData1 = NULL;
    videomode_emulatemode = 0;
    
    this->info.wm_available = 1;

    ph_UpdateHWInfo(this);
    
    return 0;
}

static SDL_Surface* ph_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags)
{
    const struct ColourMasks* mask;

    /* Lock the event thread, in multi-threading environments */
    SDL_Lock_EventThread();

    current->flags = flags;

    /* if we do not have desired fullscreen mode, then fallback into window mode */
    if (((current->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN) && (ph_GetVideoMode(width, height, bpp)==0))
    {
       current->flags &= ~SDL_FULLSCREEN;
       current->flags &= ~SDL_NOFRAME;
       current->flags &= ~SDL_RESIZABLE;
    }

    ph_SetupWindow(this, width, height, current->flags);

    mask = ph_GetColourMasks(bpp);
    if (mask != NULL)
    {
        SDL_ReallocFormat(current, mask->bpp, mask->red, mask->green, mask->blue, 0);
    }
    else
    {
        SDL_SetError("ph_SetVideoMode(): desired bpp is not supported by photon !\n");
        return NULL;
    }

    if ((current->flags & SDL_OPENGL)==SDL_OPENGL)
    {
#if !defined(HAVE_OPENGL)
        /* if no built-in OpenGL support */
        SDL_SetError("ph_SetVideoMode(): no OpenGL support, you need to recompile SDL.\n");
        current->flags &= ~SDL_OPENGL;
        return NULL;
#endif /* HAVE_OPENGL */
    }
    else
    {
        /* Initialize internal variables */
        if ((current->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN)
        {
            if (bpp==8)
            {
               desktoppal=SDLPH_PAL_SYSTEM;
            }

            current->flags &= ~SDL_RESIZABLE; /* no resize for Direct Context */
            current->flags |= SDL_HWSURFACE;
        }
        else
        {
            /* remove this if we'll have support for the non-fullscreen sw/hw+doublebuf one day */
            current->flags &= ~SDL_DOUBLEBUF;

            /* Use offscreen memory if SDL_HWSURFACE flag is set */
            if ((current->flags & SDL_HWSURFACE) == SDL_HWSURFACE)
            {
                if (desktopbpp!=bpp)
                {
                   current->flags &= ~SDL_HWSURFACE;
                }
            }

            /* using palette emulation code in window mode */
            if (bpp==8)
            {
                if (desktopbpp>=15)
                {
                    desktoppal = SDLPH_PAL_EMULATE;
                }
                else
                {
                    desktoppal = SDLPH_PAL_SYSTEM;
                }
            }
            else
            {
               desktoppal = SDLPH_PAL_NONE;
            }
        }
    }

    current->w = width;
    current->h = height;

    if (desktoppal==SDLPH_PAL_SYSTEM)
    {
       current->flags|=SDL_HWPALETTE;
    }

    /* Must call at least once for setup image planes */
    if (ph_SetupUpdateFunction(this, current, current->flags)==-1)
    {
        /* Error string was filled in the ph_SetupUpdateFunction() */
        return NULL;
    }

    /* finish window drawing, if we are not in fullscreen, of course */
    if ((current->flags & SDL_FULLSCREEN) != SDL_FULLSCREEN)
    {
       PtFlush();
    }
    else
    {
       PgFlush();
    }

    visualbpp=bpp;

    ph_UpdateHWInfo(this);

    SDL_Unlock_EventThread();

    /* We've done! */
    return (current);
}

static void ph_VideoQuit(_THIS)
{
    /* restore palette */
    if (desktopbpp==8)
    {
        PgSetPalette(syspalph, 0, -1, 0, 0, 0);
        PgSetPalette(savedpal, 0, 0, _Pg_MAX_PALETTE, Pg_PALSET_GLOBAL | Pg_PALSET_FORCE_EXPOSE, 0);
        PgFlush();
    }

    ph_DestroyImage(this, SDL_VideoSurface); 

    if (window)
    {
        PtUnrealizeWidget(window);
        PtDestroyWidget(window);
        window=NULL;
    }

    if (event!=NULL)
    {
        free(event);
        event=NULL;
    }
}

static int ph_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
{
    int i;
    SDL_Rect updaterect;

    updaterect.x = updaterect.y = 0;
    updaterect.w = this->screen->w;
    updaterect.h = this->screen->h;

    /* palette emulation code, using palette of the PhImage_t struct */
    if (desktoppal==SDLPH_PAL_EMULATE)
    {
        if ((SDL_Image) && (SDL_Image->palette))
        {
            for (i=firstcolor; i<firstcolor+ncolors; i++)
            {
                syspalph[i] = PgRGB(colors[i-firstcolor].r, colors[i-firstcolor].g, colors[i-firstcolor].b);
                SDL_Image->palette[i] = syspalph[i];
            }

            /* image needs to be redrawn */
            this->UpdateRects(this, 1, &updaterect);
        }
    }
    else
    {
        if (desktoppal==SDLPH_PAL_SYSTEM)
        {
            for (i=firstcolor; i<firstcolor+ncolors; i++)
            {
                syspalph[i] = PgRGB(colors[i-firstcolor].r, colors[i-firstcolor].g, colors[i-firstcolor].b);
            }

            if ((this->screen->flags & SDL_FULLSCREEN) != SDL_FULLSCREEN)
            {
                 /* window mode must use soft palette */
                PgSetPalette(&syspalph[firstcolor], 0, firstcolor, ncolors, Pg_PALSET_GLOBAL, 0);
                /* image needs to be redrawn */
                this->UpdateRects(this, 1, &updaterect);
            }
            else
            {
                /* fullscreen mode must use hardware palette */
                PgSetPalette(&syspalph[firstcolor], 0, firstcolor, ncolors, Pg_PALSET_GLOBAL, 0);
            }
        }
        else
        {
            /* SDLPH_PAL_NONE do nothing */
        }
    }
    
    return 1;
}