SDL_QuartzVideo.m
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997, 1998, 1999, 2000, 2001 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@devolution.com
*/
#include "SDL_QuartzVideo.h"
/* Some variables to share among files, put in device structure eventually */
static SDL_GrabMode currentGrabMode = SDL_GRAB_OFF;
static BOOL inForeground = YES;
static SDLKey keymap[256];
static unsigned int currentMods = 0; /* Current keyboard modifiers, to track modifier state */
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static char QZ_Error[255]; /* Global error buffer to temporarily store more informative error messages */
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/* Include files into one compile unit...break apart eventually */
#include "SDL_QuartzWM.m"
#include "SDL_QuartzEvents.m"
#include "SDL_QuartzWindow.m"
/* Bootstrap binding, enables entry point into the driver */
VideoBootStrap QZ_bootstrap = {
"Quartz", "MacOS X CoreGraphics", QZ_Available, QZ_CreateDevice
};
/* Bootstrap functions */
static int QZ_Available () {
return 1;
}
static SDL_VideoDevice* QZ_CreateDevice (int device_index) {
#pragma unused (device_index)
SDL_VideoDevice *device;
SDL_PrivateVideoData *hidden;
device = (SDL_VideoDevice*) malloc (sizeof (*device) );
hidden = (SDL_PrivateVideoData*) malloc (sizeof (*hidden) );
if (device == NULL || hidden == NULL)
SDL_OutOfMemory ();
memset (device, 0, sizeof (*device) );
memset (hidden, 0, sizeof (*hidden) );
device->hidden = hidden;
device->VideoInit = QZ_VideoInit;
device->ListModes = QZ_ListModes;
device->SetVideoMode = QZ_SetVideoMode;
device->ToggleFullScreen = QZ_ToggleFullScreen;
device->SetColors = QZ_SetColors;
/* device->UpdateRects = QZ_UpdateRects; this is determined by SetVideoMode() */
device->VideoQuit = QZ_VideoQuit;
device->LockHWSurface = QZ_LockHWSurface;
device->UnlockHWSurface = QZ_UnlockHWSurface;
device->FreeHWSurface = QZ_FreeHWSurface;
/* device->FlipHWSurface = QZ_FlipHWSurface */;
device->SetGamma = QZ_SetGamma;
device->GetGamma = QZ_GetGamma;
device->SetGammaRamp = QZ_SetGammaRamp;
device->GetGammaRamp = QZ_GetGammaRamp;
device->GL_GetProcAddress = QZ_GL_GetProcAddress;
device->GL_GetAttribute = QZ_GL_GetAttribute;
device->GL_MakeCurrent = QZ_GL_MakeCurrent;
device->GL_SwapBuffers = QZ_GL_SwapBuffers;
device->GL_LoadLibrary = QZ_GL_LoadLibrary;
device->FreeWMCursor = QZ_FreeWMCursor;
device->CreateWMCursor = QZ_CreateWMCursor;
device->ShowWMCursor = QZ_ShowWMCursor;
device->WarpWMCursor = QZ_WarpWMCursor;
device->MoveWMCursor = QZ_MoveWMCursor;
device->CheckMouseMode = QZ_CheckMouseMode;
device->InitOSKeymap = QZ_InitOSKeymap;
device->PumpEvents = QZ_PumpEvents;
device->SetCaption = QZ_SetCaption;
device->SetIcon = QZ_SetIcon;
device->IconifyWindow = QZ_IconifyWindow;
/*device->GetWMInfo = QZ_GetWMInfo;*/
device->GrabInput = QZ_GrabInput;
device->free = QZ_DeleteDevice;
return device;
}
static void QZ_DeleteDevice (SDL_VideoDevice *device) {
free (device->hidden);
free (device);
}
static int QZ_VideoInit (_THIS, SDL_PixelFormat *video_format) {
/* Initialize the video settings; this data persists between mode switches */
display_id = kCGDirectMainDisplay;
save_mode = CGDisplayCurrentMode (display_id);
mode_list = CGDisplayAvailableModes (display_id);
palette = CGPaletteCreateDefaultColorPalette ();
/* Gather some information that is useful to know about the display */
CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayBitsPerPixel),
kCFNumberSInt32Type, &device_bpp);
CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayWidth),
kCFNumberSInt32Type, &device_width);
CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayHeight),
kCFNumberSInt32Type, &device_height);
video_format->BitsPerPixel = device_bpp;
return 0;
}
static SDL_Rect** QZ_ListModes (_THIS, SDL_PixelFormat *format, Uint32 flags) {
CFIndex num_modes = CFArrayGetCount (mode_list);
CFIndex i;
static SDL_Rect **list = NULL;
int list_size = 0;
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/* Any windowed mode is acceptable */
if ( (flags & SDL_FULLSCREEN) == 0 )
return (SDL_Rect**)-1;
/* Free memory from previous call, if any */
if ( list != NULL ) {
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for (i = 0; list[i] != NULL; i++)
free (list[i]);
free (list);
list = NULL;
}
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/* Build list of modes with the requested bpp */
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for (i = 0; i < num_modes; i++) {
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CFDictionaryRef onemode;
CFNumberRef number;
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int bpp;
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onemode = CFArrayGetValueAtIndex (mode_list, i);
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number = CFDictionaryGetValue (onemode, kCGDisplayBitsPerPixel);
CFNumberGetValue (number, kCFNumberSInt32Type, &bpp);
if (bpp == format->BitsPerPixel) {
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int intvalue;
int hasMode;
int width, height;
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number = CFDictionaryGetValue (onemode, kCGDisplayWidth);
CFNumberGetValue (number, kCFNumberSInt32Type, &intvalue);
width = (Uint16) intvalue;
number = CFDictionaryGetValue (onemode, kCGDisplayHeight);
CFNumberGetValue (number, kCFNumberSInt32Type, &intvalue);
height = (Uint16) intvalue;
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/* Check if mode is already in the list */
{
int i;
hasMode = SDL_FALSE;
for (i = 0; i < list_size; i++) {
if (list[i]->w == width && list[i]->h == height) {
hasMode = SDL_TRUE;
break;
}
}
}
/* Grow the list and add mode to the list */
if ( ! hasMode ) {
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SDL_Rect *rect;
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list_size++;
if ( list == NULL)
list = (SDL_Rect**) malloc (sizeof(*list) * list_size+1);
else
list = (SDL_Rect**) realloc (list, sizeof(*list) * list_size+1);
rect = (SDL_Rect*) malloc (sizeof(**list));
if (list == NULL || rect == NULL)
SDL_OutOfMemory ();
rect->w = width;
rect->h = height;
list[list_size-1] = rect;
list[list_size] = NULL;
}
}
}
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/* Sort list largest to smallest (by area) */
{
int i, j;
for (i = 0; i < list_size; i++) {
for (j = 0; j < list_size-1; j++) {
int area1, area2;
area1 = list[j]->w * list[j]->h;
area2 = list[j+1]->w * list[j+1]->h;
if (area1 < area2) {
SDL_Rect *tmp = list[j];
list[j] = list[j+1];
list[j+1] = tmp;
}
}
}
}
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return list;
}
static void QZ_UnsetVideoMode (_THIS) {
/* Reset values that may change between switches */
this->info.blit_fill = 0;
this->FillHWRect = NULL;
this->UpdateRects = NULL;
/* Restore gamma settings */
CGDisplayRestoreColorSyncSettings ();
/* Restore original screen resolution */
if ( mode_flags & SDL_FULLSCREEN ) {
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if (mode_flags & SDL_OPENGL)
CGLSetFullScreen(NULL);
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CGDisplaySwitchToMode (display_id, save_mode);
CGDisplayRelease (display_id);
}
/* Release window mode data structures */
else {
if ( (mode_flags & SDL_OPENGL) == 0 ) {
UnlockPortBits ( [ windowView qdPort ] );
[ windowView release ];
}
[ window setContentView:nil ];
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[ window setDelegate:nil ];
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[ window close ];
}
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/* Set pixels to null (so other code doesn't try to free it) */
if (this->screen != NULL)
this->screen->pixels = NULL;
/* Release the OpenGL context */
if ( mode_flags & SDL_OPENGL )
QZ_TearDownOpenGL (this);
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/* Ensure the cursor will be visible and working when we quit */
CGDisplayShowCursor (display_id);
CGAssociateMouseAndMouseCursorPosition (1);
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/* Signal successful teardown */
video_set = SDL_FALSE;
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}
static SDL_Surface* QZ_SetVideoFullScreen (_THIS, SDL_Surface *current, int width,
int height, int bpp, Uint32 flags) {
int exact_match;
/* See if requested mode exists */
mode = CGDisplayBestModeForParameters (display_id, bpp, width,
height, &exact_match);
/* Require an exact match to the requested mode */
if ( ! exact_match ) {
sprintf (QZ_Error, "Failed to find display resolution: %dx%dx%d", width, height, bpp);
SDL_SetError (QZ_Error);
goto ERR_NO_MATCH;
}
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/* Put up the blanking window (a window above all other windows) */
if ( CGDisplayNoErr != CGDisplayCapture (display_id) ) {
SDL_SetError ("Failed capturing display");
goto ERR_NO_CAPTURE;
}
/* Do the physical switch */
if ( CGDisplayNoErr != CGDisplaySwitchToMode (display_id, mode) ) {
SDL_SetError ("Failed switching display resolution");
goto ERR_NO_SWITCH;
}
/* None of these methods seem to fix the fullscreen artifacts bug(s) */
#if USE_GDHANDLE
SetGDevice(GetMainDevice());
current->pitch = (**(** GetMainDevice() ).gdPMap).rowBytes & 0x3FFF;
current->pixels = (**(** GetMainDevice() ).gdPMap).baseAddr;
#elif USE_CREATEPORT
device_port = CreateNewPortForCGDisplayID((Uint32*)display_id);
SetPort (device_port);
LockPortBits ( device_port );
current->pixels = GetPixBaseAddr ( GetPortPixMap ( device_port ) );
current->pitch = GetPixRowBytes ( GetPortPixMap ( device_port ) );
UnlockPortBits ( device_port );
#else
current->pixels = (Uint32*) CGDisplayBaseAddress (display_id);
current->pitch = CGDisplayBytesPerRow (display_id);
#endif
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current->flags = 0;
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current->w = width;
current->h = height;
current->flags |= SDL_FULLSCREEN;
current->flags |= SDL_HWSURFACE;
this->UpdateRects = QZ_DirectUpdate;
/* Setup some mode-dependant info */
if ( CGSDisplayCanHWFill (display_id) ) {
this->info.blit_fill = 1;
this->FillHWRect = QZ_FillHWRect;
}
if ( CGDisplayCanSetPalette (display_id) )
current->flags |= SDL_HWPALETTE;
/* Setup OpenGL for a fullscreen context */
if (flags & SDL_OPENGL) {
CGLError err;
CGLContextObj ctx;
if ( ! QZ_SetupOpenGL (this, bpp, flags) ) {
return NULL;
}
ctx = [ gl_context cglContext ];
err = CGLSetFullScreen (ctx);
if (err) {
sprintf (QZ_Error, "Error setting OpenGL fullscreen: %s", CGLErrorString(err));
SDL_SetError (QZ_Error);
goto ERR_NO_GL;
}
[ gl_context makeCurrentContext];
current->flags |= SDL_OPENGL;
}
/* If we don't hide menu bar, it will get events and interrupt the program */
HideMenuBar ();
/* Save the flags to ensure correct tear-down */
mode_flags = current->flags;
return current;
/* Since the blanking window covers *all* windows (even force quit) correct recovery is crutial */
ERR_NO_GL: CGDisplaySwitchToMode (display_id, save_mode);
ERR_NO_SWITCH: CGDisplayRelease (display_id);
ERR_NO_CAPTURE:
ERR_NO_MATCH: return NULL;
}
static SDL_Surface* QZ_SetVideoWindowed (_THIS, SDL_Surface *current, int width,
int height, int bpp, Uint32 flags) {
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unsigned int style;
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NSRect rect;
rect = NSMakeRect (0, 0, width, height);
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#if 1 // FIXME - the resize button doesn't show? Also need resize events...
flags &= ~SDL_RESIZABLE;
#endif
/* Set the window style based on input flags */
if ( flags & SDL_NOFRAME ) {
style = NSBorderlessWindowMask;
} else {
style = NSTitledWindowMask;
style |= (NSMiniaturizableWindowMask | NSClosableWindowMask);
if ( flags & SDL_RESIZABLE )
style |= NSResizableWindowMask;
}
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/* Manually create a window, avoids having a nib file resource */
window = [ [ SDL_QuartzWindow alloc ] initWithContentRect:rect
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styleMask:style backing:NSBackingStoreBuffered defer:NO ];
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if (window == nil) {
SDL_SetError ("Could not create the Cocoa window");
return NULL;
}
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current->flags = 0;
current->w = width;
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current->h = height;
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[ window setReleasedWhenClosed:YES ];
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QZ_SetCaption(this, this->wm_title, this->wm_icon);
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[ window setAcceptsMouseMovedEvents:YES ];
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[ window setViewsNeedDisplay:NO ];
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[ window center ];
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[ window setDelegate:
[ [ [ SDL_QuartzWindowDelegate alloc ] init ] autorelease ] ];
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/* For OpenGL, we set the content view to a NSOpenGLView */
if ( flags & SDL_OPENGL ) {
if ( ! QZ_SetupOpenGL (this, bpp, flags) ) {
return NULL;
}
[ gl_context setView: [ window contentView ] ];
[ gl_context makeCurrentContext];
[ window orderFront:nil ];
current->flags |= SDL_OPENGL;
}
/* For 2D, we set the content view to a NSQuickDrawView */
else {
windowView = [ [ NSQuickDrawView alloc ] init ];
[ window setContentView:windowView ];
[ window orderFront:nil ];
LockPortBits ( [ windowView qdPort ] );
current->pixels = GetPixBaseAddr ( GetPortPixMap ( [ windowView qdPort ] ) );
current->pitch = GetPixRowBytes ( GetPortPixMap ( [ windowView qdPort ] ) );
current->flags |= SDL_SWSURFACE;
current->flags |= SDL_PREALLOC;
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if ( flags & SDL_NOFRAME )
current->flags |= SDL_NOFRAME;
if ( flags & SDL_RESIZABLE )
current->flags |= SDL_RESIZABLE;
/* Offset 22 pixels down to fill the full content region */
if ( ! (current->flags & SDL_NOFRAME) ) {
current->pixels += 22 * current->pitch;
}
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this->UpdateRects = QZ_UpdateRects;
}
return current;
}
static SDL_Surface* QZ_SetVideoMode (_THIS, SDL_Surface *current, int width,
int height, int bpp, Uint32 flags) {
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if (video_set == SDL_TRUE)
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QZ_UnsetVideoMode (this);
current->flags = 0;
/* Setup full screen video */
if ( flags & SDL_FULLSCREEN ) {
current = QZ_SetVideoFullScreen (this, current, width, height, bpp, flags );
if (current == NULL)
return NULL;
}
/* Setup windowed video */
else {
/* Force bpp to the device's bpp */
bpp = current->format->BitsPerPixel;
current = QZ_SetVideoWindowed (this, current, width, height, bpp, flags);
if (current == NULL)
return NULL;
}
/* Setup the new pixel format */
{
int amask = 0,
rmask = 0,
gmask = 0,
bmask = 0;
switch (bpp) {
case 16: /* (1)-5-5-5 RGB */
amask = 0;
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rmask = 0x7C00;
gmask = 0x03E0;
bmask = 0x001F;
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break;
case 24:
SDL_SetError ("24bpp is not available");
return NULL;
case 32: /* (8)-8-8-8 ARGB */
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amask = 0x00000000;
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rmask = 0x00FF0000;
gmask = 0x0000FF00;
bmask = 0x000000FF;
break;
}
if ( ! SDL_ReallocFormat (current, bpp,
rmask, gmask, bmask, amask ) ) {
SDL_SetError ("Couldn't reallocate pixel format");
return NULL;
}
}
/* Warp mouse to origin in order to get passive mouse motion events started correctly */
QZ_PrivateWarpCursor (this, current->flags & SDL_FULLSCREEN, height, 0, 0);
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/* Signal successful completion */
video_set = SDL_TRUE;
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return current;
}
static int QZ_ToggleFullScreen (_THIS, int on) {
return -1;
}
static int QZ_SetColors (_THIS, int first_color, int num_colors,
SDL_Color *colors) {
CGTableCount index;
CGDeviceColor color;
for (index = first_color; index < first_color+num_colors; index++) {
/* Clamp colors between 0.0 and 1.0 */
color.red = colors->r / 255.0;
color.blue = colors->b / 255.0;
color.green = colors->g / 255.0;
colors++;
CGPaletteSetColorAtIndex (palette, color, index);
}
if ( CGDisplayNoErr != CGDisplaySetPalette (display_id, palette) )
return 0;
return 1;
}
static void QZ_DirectUpdate (_THIS, int num_rects, SDL_Rect *rects) {
#pragma unused(this,num_rects,rects)
}
static void QZ_UpdateRects (_THIS, int numRects, SDL_Rect *rects) {
if (SDL_VideoSurface->flags & SDL_OPENGLBLIT) {
QZ_GL_SwapBuffers (this);
}
else {
int i;
RgnHandle dirty = NewRgn ();
RgnHandle temp = NewRgn ();
SetEmptyRgn (dirty);
/* Build the region of dirty rectangles */
for (i = 0; i < numRects; i++) {
MacSetRectRgn (temp, rects[i].x, rects[i].y,
rects[i].x + rects[i].w, rects[i].y + rects[i].h);
MacUnionRgn (dirty, temp, dirty);
}
/* Flush the dirty region */
QDFlushPortBuffer ( [ windowView qdPort ], dirty );
DisposeRgn (dirty);
DisposeRgn (temp);
}
}
static void QZ_VideoQuit (_THIS) {
QZ_UnsetVideoMode (this);
CGPaletteRelease (palette);
}
static int QZ_FillHWRect (_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) {
CGSDisplayHWFill (display_id, rect->x, rect->y, rect->w, rect->h, color);
return 0;
}
static int QZ_LockHWSurface(_THIS, SDL_Surface *surface) {
return 1;
}
static void QZ_UnlockHWSurface(_THIS, SDL_Surface *surface) {
}
static void QZ_FreeHWSurface (_THIS, SDL_Surface *surface) {
}
/*
int QZ_FlipHWSurface (_THIS, SDL_Surface *surface) {
return 0;
}
*/
/* Gamma functions */
static int QZ_SetGamma (_THIS, float red, float green, float blue) {
const CGGammaValue min = 0.0, max = 1.0;
if ( CGDisplayNoErr != CGSetDisplayTransferByFormula
(display_id, min, max, red, min, max, green, min, max, blue) )
return -1;
return 0;
}
static int QZ_GetGamma (_THIS, float *red, float *green, float *blue) {
CGGammaValue dummy;
if ( CGDisplayNoErr != CGGetDisplayTransferByFormula
(display_id, &dummy, &dummy, red,
&dummy, &dummy, green, &dummy, &dummy, blue) )
return -1;
return 0;
}
static int QZ_SetGammaRamp (_THIS, Uint16 *ramp) {
const CGTableCount tableSize = 255;
CGGammaValue redTable[tableSize];
CGGammaValue greenTable[tableSize];
CGGammaValue blueTable[tableSize];
int i;
/* Extract gamma values into separate tables, convert to floats between 0.0 and 1.0 */
for (i = 0; i < 256; i++)
redTable[i % 256] = ramp[i] / 65535.0;
for (i=256; i < 512; i++)
greenTable[i % 256] = ramp[i] / 65535.0;
for (i=512; i < 768; i++)
blueTable[i % 256] = ramp[i] / 65535.0;
if ( CGDisplayNoErr != CGSetDisplayTransferByTable
(display_id, tableSize, redTable, greenTable, blueTable) )
return -1;
return 0;
}
static int QZ_GetGammaRamp (_THIS, Uint16 *ramp) {
const CGTableCount tableSize = 255;
CGGammaValue redTable[tableSize];
CGGammaValue greenTable[tableSize];
CGGammaValue blueTable[tableSize];
CGTableCount actual;
int i;
if ( CGDisplayNoErr != CGGetDisplayTransferByTable
(display_id, tableSize, redTable, greenTable, blueTable, &actual) ||
actual != tableSize)
return -1;
/* Pack tables into one array, with values from 0 to 65535 */
for (i = 0; i < 256; i++)
ramp[i] = redTable[i % 256] * 65535.0;
for (i=256; i < 512; i++)
ramp[i] = greenTable[i % 256] * 65535.0;
for (i=512; i < 768; i++)
ramp[i] = blueTable[i % 256] * 65535.0;
return 0;
}
/* OpenGL helper functions */
static int QZ_SetupOpenGL (_THIS, int bpp, Uint32 flags) {
NSOpenGLPixelFormatAttribute attr[32];
NSOpenGLPixelFormat *fmt;
int i = 0;
int colorBits = bpp;
if ( flags & SDL_FULLSCREEN ) {
attr[i++] = NSOpenGLPFAFullScreen;
}
/* In windowed mode, the OpenGL pixel depth must match device pixel depth */
else if ( colorBits != device_bpp ) {
colorBits = device_bpp;
}
attr[i++] = NSOpenGLPFAColorSize;
attr[i++] = colorBits;
attr[i++] = NSOpenGLPFADepthSize;
attr[i++] = this->gl_config.depth_size;
if ( this->gl_config.double_buffer ) {
attr[i++] = NSOpenGLPFADoubleBuffer;
}
if ( this->gl_config.stencil_size != 0 ) {
attr[i++] = NSOpenGLPFAStencilSize;
attr[i++] = this->gl_config.stencil_size;
}
attr[i++] = NSOpenGLPFAScreenMask;
attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id);
attr[i] = 0;
fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ];
if (fmt == nil) {
SDL_SetError ("Failed creating OpenGL pixel format");
return 0;
}
gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt
shareContext:nil];
if (gl_context == nil) {
SDL_SetError ("Failed creating OpenGL context");
return 0;
}
/* Convince SDL that the GL "driver" is loaded */
this->gl_config.driver_loaded = 1;
[ fmt release ];
return 1;
}
static void QZ_TearDownOpenGL (_THIS) {
[ NSOpenGLContext clearCurrentContext ];
[ gl_context clearDrawable ];
[ gl_context release ];
}
/* SDL OpenGL functions */
static int QZ_GL_LoadLibrary (_THIS, const char *location) {
return 1;
}
static void* QZ_GL_GetProcAddress (_THIS, const char *proc) {
/* We may want to cache the bundleRef at some point */
CFBundleRef bundle;
CFURLRef bundleURL = CFURLCreateWithFileSystemPath (kCFAllocatorDefault,
CFSTR("/System/Library/Frameworks/OpenGL.framework"), kCFURLPOSIXPathStyle, true);
CFStringRef functionName = CFStringCreateWithCString
(kCFAllocatorDefault, proc, kCFStringEncodingASCII);
void *function;
bundle = CFBundleCreate (kCFAllocatorDefault, bundleURL);
assert (bundle != NULL);
function = CFBundleGetFunctionPointerForName (bundle, functionName);
CFRelease ( bundleURL );
CFRelease ( functionName );
CFRelease ( bundle );
return function;
}
static int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) {
/*
CGLContextRef ctx = [ gl_context cglContext ];
CGLContextParameter param;
switch (attrib) {
case SDL_GL_RED_SIZE: param = CGLContextParameter break;
}
CGLGetParameter (ctx, param, (long*)value);
*/
*value = -1;
return -1;
}
static int QZ_GL_MakeCurrent (_THIS) {
[ gl_context makeCurrentContext ];
return 0;
}
static void QZ_GL_SwapBuffers (_THIS) {
[ gl_context flushBuffer ];
}