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RetroArch/gfx/drivers_context/cocoa_gl_ctx.m

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2013-2014 - Jason Fetters
* Copyright (C) 2011-2016 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#if TARGET_OS_IPHONE
#include <CoreGraphics/CoreGraphics.h>
#else
#include <ApplicationServices/ApplicationServices.h>
#endif
#if defined(HAVE_COCOA)
#include <OpenGL/CGLTypes.h>
#include <OpenGL/OpenGL.h>
#include <AppKit/NSScreen.h>
#include <AppKit/NSOpenGL.h>
#elif defined(HAVE_COCOATOUCH)
#include <GLKit/GLKit.h>
#ifdef HAVE_AVFOUNDATION
#import <AVFoundation/AVFoundation.h>
#endif
#endif
#include <retro_assert.h>
#import "../../ui/drivers/cocoa/cocoa_common.h"
#include "../video_context_driver.h"
#include "../../configuration.h"
#include "../../runloop.h"
#include "../../verbosity.h"
#if defined(HAVE_COCOATOUCH)
#define GLContextClass EAGLContext
#define GLFrameworkID CFSTR("com.apple.opengles")
#define RAScreen UIScreen
#ifndef UIUserInterfaceIdiomTV
#define UIUserInterfaceIdiomTV 2
#endif
@interface EAGLContext (OSXCompat) @end
@implementation EAGLContext (OSXCompat)
+ (void)clearCurrentContext { [EAGLContext setCurrentContext:nil]; }
- (void)makeCurrentContext { [EAGLContext setCurrentContext:self]; }
@end
#else
@interface NSScreen (IOSCompat) @end
@implementation NSScreen (IOSCompat)
- (CGRect)bounds
{
CGRect cgrect = NSRectToCGRect(self.frame);
return CGRectMake(0, 0, CGRectGetWidth(cgrect), CGRectGetHeight(cgrect));
}
- (float) scale { return 1.0f; }
@end
#define GLContextClass NSOpenGLContext
#define GLFrameworkID CFSTR("com.apple.opengl")
#define RAScreen NSScreen
#endif
#if defined(HAVE_COCOATOUCH)
static GLKView *g_view;
UIView *g_pause_indicator_view;
#endif
static GLContextClass* g_hw_ctx;
static GLContextClass* g_context;
static int g_fast_forward_skips;
static bool g_is_syncing = true;
static bool g_use_hw_ctx;
#if defined(HAVE_COCOA)
static NSOpenGLPixelFormat* g_format;
void *glcontext_get_ptr(void)
{
return g_context;
}
#endif
static unsigned g_minor = 0;
static unsigned g_major = 0;
/* forward declaration */
void *nsview_get_ptr(void);
#if defined(HAVE_COCOATOUCH)
static void glkitview_init_xibs(void)
{
/* iOS Pause menu and lifecycle. */
UINib *xib = (UINib*)[UINib nibWithNibName:BOXSTRING("PauseIndicatorView") bundle:nil];
g_pause_indicator_view = [[xib instantiateWithOwner:[RetroArch_iOS get] options:nil] lastObject];
}
#endif
void *glkitview_init(void)
{
#if defined(HAVE_COCOATOUCH)
glkitview_init_xibs();
g_view = [GLKView new];
g_view.multipleTouchEnabled = YES;
g_view.enableSetNeedsDisplay = NO;
[g_view addSubview:g_pause_indicator_view];
return (__bridge void *)((GLKView*)g_view);
#else
return nsview_get_ptr();
#endif
}
#if defined(HAVE_COCOATOUCH)
void cocoagl_bind_game_view_fbo(void)
{
#ifdef HAVE_AVFOUNDATION
/* Implicitly initializes your audio session */
AVAudioSession *audio_session = [AVAudioSession sharedInstance];
[audio_session setCategory:AVAudioSessionCategoryAmbient error:nil];
[audio_session setActive:YES error:nil];
#endif
if (g_context)
[g_view bindDrawable];
}
#endif
static float get_from_selector(Class obj_class, id obj_id, SEL selector, CGFloat *ret)
{
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:
[obj_class instanceMethodSignatureForSelector:selector]];
[invocation setSelector:selector];
[invocation setTarget:obj_id];
[invocation invoke];
[invocation getReturnValue:ret];
return *ret;
}
void *get_chosen_screen(void)
{
settings_t *settings = config_get_ptr();
NSArray *screens = [RAScreen screens];
if (!screens || !settings)
return NULL;
if (settings->video.monitor_index >= screens.count)
{
RARCH_WARN("video_monitor_index is greater than the number of connected monitors; using main screen instead.\n");
#if __has_feature(objc_arc)
return (__bridge void*)screens;
#else
return (void*)screens;
#endif
}
#if __has_feature(objc_arc)
return ((__bridge void*)[screens objectAtIndex:settings->video.monitor_index]);
#else
return ((void*)[screens objectAtIndex:settings->video.monitor_index]);
#endif
}
float get_backing_scale_factor(void)
{
#if __has_feature(objc_arc)
RAScreen *screen = (__bridge RAScreen*)get_chosen_screen();
#else
RAScreen *screen = (RAScreen*)get_chosen_screen();
#endif
if (!screen)
return 0.0;
#ifdef HAVE_COCOA
CGFloat ret;
CocoaView *g_view = (CocoaView*)nsview_get_ptr();
SEL selector = NSSelectorFromString(BOXSTRING("backingScaleFactor"));
if ([screen respondsToSelector:selector])
return (float)get_from_selector([[g_view window] class], [g_view window], selector, &ret);
#endif
return 1.0f;
}
void cocoagl_gfx_ctx_update(void)
{
#if defined(HAVE_COCOA)
#if MAC_OS_X_VERSION_10_7
CGLUpdateContext(g_context.CGLContextObj);
#else
[g_context update];
#endif
#endif
}
static void *cocoagl_gfx_ctx_init(void *video_driver)
{
(void)video_driver;
#if defined(HAVE_COCOA)
CocoaView *g_view = (CocoaView*)nsview_get_ptr();
if ([g_view respondsToSelector: @selector(setWantsBestResolutionOpenGLSurface:)])
[g_view setWantsBestResolutionOpenGLSurface:YES];
NSOpenGLPixelFormatAttribute attributes [] = {
NSOpenGLPFAColorSize, 24,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAAllowOfflineRenderers,
NSOpenGLPFADepthSize,
(NSOpenGLPixelFormatAttribute)16, // 16 bit depth buffer
#ifdef MAC_OS_X_VERSION_10_7
(g_major || g_minor) ? NSOpenGLPFAOpenGLProfile : 0,
(g_major << 12) | (g_minor << 8),
#endif
(NSOpenGLPixelFormatAttribute)0
};
g_format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attributes];
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
if (g_format == nil)
{
/* NSOpenGLFPAAllowOfflineRenderers is
not supported on this OS version. */
attributes[3] = (NSOpenGLPixelFormatAttribute)0;
g_format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attributes];
}
#endif
if (g_use_hw_ctx)
{
//g_hw_ctx = [[NSOpenGLContext alloc] initWithFormat:g_format shareContext:nil];
}
g_context = [[NSOpenGLContext alloc] initWithFormat:g_format shareContext:(g_use_hw_ctx) ? g_hw_ctx : nil];
[g_context setView:g_view];
#else
g_context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
g_view.context = g_context;
#endif
[g_context makeCurrentContext];
// Make sure the view was created
[CocoaView get];
return (void*)"cocoa";
}
static void cocoagl_gfx_ctx_destroy(void *data)
{
(void)data;
[GLContextClass clearCurrentContext];
#if defined(HAVE_COCOA)
[g_context clearDrawable];
if (g_context)
[g_context release];
g_context = nil;
if (g_format)
[g_format release];
g_format = nil;
if (g_hw_ctx)
[g_hw_ctx release];
g_hw_ctx = nil;
#endif
[GLContextClass clearCurrentContext];
g_context = nil;
}
static bool cocoagl_gfx_ctx_bind_api(void *data, enum gfx_ctx_api api, unsigned major, unsigned minor)
{
(void)data;
#if defined(HAVE_COCOATOUCH)
if (api != GFX_CTX_OPENGL_ES_API)
return false;
#elif defined(HAVE_COCOA)
if (api != GFX_CTX_OPENGL_API)
return false;
#endif
g_minor = minor;
g_major = major;
return true;
}
static void cocoagl_gfx_ctx_swap_interval(void *data, unsigned interval)
{
(void)data;
#if defined(HAVE_COCOATOUCH) // < No way to disable Vsync on iOS?
// Just skip presents so fast forward still works.
g_is_syncing = interval ? true : false;
g_fast_forward_skips = interval ? 0 : 3;
#elif defined(HAVE_COCOA)
GLint value = interval ? 1 : 0;
[g_context setValues:&value forParameter:NSOpenGLCPSwapInterval];
#endif
}
static void cocoagl_gfx_ctx_show_mouse(void *data, bool state)
{
(void)data;
#ifdef HAVE_COCOA
if (state)
[NSCursor unhide];
else
[NSCursor hide];
#endif
}
static bool cocoagl_gfx_ctx_set_video_mode(void *data,
unsigned width, unsigned height, bool fullscreen)
{
#if defined(HAVE_COCOA)
static bool has_went_fullscreen = false;
CocoaView *g_view = (CocoaView*)nsview_get_ptr();
/* TODO: Screen mode support. */
if (fullscreen)
{
if (!has_went_fullscreen)
{
[g_view enterFullScreenMode:get_chosen_screen() withOptions:nil];
cocoagl_gfx_ctx_show_mouse(data, false);
}
}
else
{
if (has_went_fullscreen)
{
[g_view exitFullScreenModeWithOptions:nil];
[[g_view window] makeFirstResponder:g_view];
cocoagl_gfx_ctx_show_mouse(data, true);
}
[[g_view window] setContentSize:NSMakeSize(width, height)];
}
has_went_fullscreen = fullscreen;
#endif
(void)data;
// TODO: Maybe iOS users should be able to show/hide the status bar here?
return true;
}
float cocoagl_gfx_ctx_get_native_scale(void)
{
static CGFloat ret = 0.0f;
SEL selector = NSSelectorFromString(BOXSTRING("nativeScale"));
#if __has_feature(objc_arc)
RAScreen *screen = (__bridge RAScreen*)get_chosen_screen();
#else
RAScreen *screen = (RAScreen*)get_chosen_screen();
#endif
if (ret != 0.0f)
return ret;
if (!screen)
return 0.0f;
if ([screen respondsToSelector:selector])
return (float)get_from_selector([screen class], screen, selector, &ret);
ret = 1.0f;
selector = NSSelectorFromString(BOXSTRING("scale"));
if ([screen respondsToSelector:selector])
ret = screen.scale;
return ret;
}
static void cocoagl_gfx_ctx_get_video_size(void *data, unsigned* width, unsigned* height)
{
float screenscale = cocoagl_gfx_ctx_get_native_scale();
#if defined(HAVE_COCOA)
CGRect size;
GLsizei backingPixelWidth, backingPixelHeight;
CocoaView *g_view = (CocoaView*)nsview_get_ptr();
CGRect cgrect = NSRectToCGRect([g_view frame]);
#if MAC_OS_X_VERSION_10_7
SEL selector = NSSelectorFromString(BOXSTRING("convertRectToBacking:"));
if ([g_view respondsToSelector:selector])
cgrect = NSRectToCGRect([g_view convertRectToBacking:[g_view bounds]]);
#endif
backingPixelWidth = CGRectGetWidth(cgrect);
backingPixelHeight = CGRectGetHeight(cgrect);
size = CGRectMake(0, 0, backingPixelWidth, backingPixelHeight);
#else
CGRect size = g_view.bounds;
#endif
*width = CGRectGetWidth(size) * screenscale;
*height = CGRectGetHeight(size) * screenscale;
}
static void cocoagl_gfx_ctx_update_window_title(void *data)
{
static char buf[128] = {0};
static char buf_fps[128] = {0};
bool got_text = video_monitor_get_fps(buf, sizeof(buf),
buf_fps, sizeof(buf_fps));
settings_t *settings = config_get_ptr();
(void)got_text;
#if defined(HAVE_COCOA)
CocoaView *g_view = (CocoaView*)nsview_get_ptr();
static const char* const text = buf; /* < Can't access buffer directly in the block */
if (got_text)
[[g_view window] setTitle:[NSString stringWithCString:text encoding:NSUTF8StringEncoding]];
#endif
if (settings->fps_show)
runloop_msg_queue_push(buf_fps, 1, 1, false);
}
static bool cocoagl_gfx_ctx_get_metrics(void *data, enum display_metric_types type,
float *value)
{
#if __has_feature(objc_arc)
RAScreen *screen = (__bridge RAScreen*)get_chosen_screen();
#else
RAScreen *screen = (RAScreen*)get_chosen_screen();
#endif
#if defined(HAVE_COCOA)
NSDictionary *description = [screen deviceDescription];
NSSize display_pixel_size = [[description objectForKey:NSDeviceSize] sizeValue];
CGSize display_physical_size = CGDisplayScreenSize(
[[description objectForKey:@"NSScreenNumber"] unsignedIntValue]);
float display_width = display_pixel_size.width;
float display_height = display_pixel_size.height;
float physical_width = display_physical_size.width;
float physical_height = display_physical_size.height;
float scale = get_backing_scale_factor();
float dpi = (display_width/ physical_width) * 25.4f * scale;
#elif defined(HAVE_COCOATOUCH)
float scale = cocoagl_gfx_ctx_get_native_scale();
CGRect screen_rect = [screen bounds];
float display_height = screen_rect.size.height;
float physical_width = screen_rect.size.width * scale;
float physical_height = screen_rect.size.height * scale;
float dpi = 160 * scale;
switch (UI_USER_INTERFACE_IDIOM())
{
case UIUserInterfaceIdiomUnspecified:
/* TODO */
break;
case UIUserInterfaceIdiomPad:
dpi = 132 * scale;
break;
case UIUserInterfaceIdiomPhone:
dpi = 163 * scale;
break;
case UIUserInterfaceIdiomTV:
/* TODO */
break;
}
#endif
(void)display_height;
switch (type)
{
case DISPLAY_METRIC_MM_WIDTH:
*value = physical_width;
break;
case DISPLAY_METRIC_MM_HEIGHT:
*value = physical_height;
break;
case DISPLAY_METRIC_DPI:
*value = dpi;
break;
case DISPLAY_METRIC_NONE:
default:
*value = 0;
return false;
}
return true;
}
static bool cocoagl_gfx_ctx_has_focus(void *data)
{
(void)data;
#if defined(HAVE_COCOATOUCH)
return ([[UIApplication sharedApplication] applicationState] == UIApplicationStateActive);
#else
return [NSApp isActive];
#endif
}
static bool cocoagl_gfx_ctx_suppress_screensaver(void *data, bool enable)
{
(void)data;
(void)enable;
return false;
}
static bool cocoagl_gfx_ctx_has_windowed(void *data)
{
(void)data;
#if defined(HAVE_COCOATOUCH)
return false;
#else
return true;
#endif
}
static void cocoagl_gfx_ctx_swap_buffers(void *data)
{
if (!(--g_fast_forward_skips < 0))
return;
#if defined(HAVE_COCOA)
[g_context flushBuffer];
#elif defined(HAVE_COCOATOUCH)
if (g_view)
[g_view display];
#endif
g_fast_forward_skips = g_is_syncing ? 0 : 3;
}
static gfx_ctx_proc_t cocoagl_gfx_ctx_get_proc_address(const char *symbol_name)
{
return (gfx_ctx_proc_t)CFBundleGetFunctionPointerForName(CFBundleGetBundleWithIdentifier(GLFrameworkID),
(
#if __has_feature(objc_arc)
__bridge
#endif
CFStringRef)BOXSTRING(symbol_name)
);
}
static void cocoagl_gfx_ctx_check_window(void *data, bool *quit,
bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
{
unsigned new_width, new_height;
(void)frame_count;
*quit = false;
cocoagl_gfx_ctx_get_video_size(data, &new_width, &new_height);
if (new_width != *width || new_height != *height)
{
*width = new_width;
*height = new_height;
*resize = true;
}
}
static bool cocoagl_gfx_ctx_set_resize(void *data, unsigned width, unsigned height)
{
(void)data;
(void)width;
(void)height;
return false;
}
static void cocoagl_gfx_ctx_input_driver(void *data, const input_driver_t **input, void **input_data)
{
(void)data;
*input = NULL;
*input_data = NULL;
}
static void cocoagl_gfx_ctx_bind_hw_render(void *data, bool enable)
{
(void)data;
g_use_hw_ctx = enable;
if (enable)
[g_hw_ctx makeCurrentContext];
else
[g_context makeCurrentContext];
}
const gfx_ctx_driver_t gfx_ctx_cocoagl = {
cocoagl_gfx_ctx_init,
cocoagl_gfx_ctx_destroy,
cocoagl_gfx_ctx_bind_api,
cocoagl_gfx_ctx_swap_interval,
cocoagl_gfx_ctx_set_video_mode,
cocoagl_gfx_ctx_get_video_size,
NULL, /* get_video_output_size */
NULL, /* get_video_output_prev */
NULL, /* get_video_output_next */
cocoagl_gfx_ctx_get_metrics,
NULL,
cocoagl_gfx_ctx_update_window_title,
cocoagl_gfx_ctx_check_window,
cocoagl_gfx_ctx_set_resize,
cocoagl_gfx_ctx_has_focus,
cocoagl_gfx_ctx_suppress_screensaver,
cocoagl_gfx_ctx_has_windowed,
cocoagl_gfx_ctx_swap_buffers,
cocoagl_gfx_ctx_input_driver,
cocoagl_gfx_ctx_get_proc_address,
NULL,
NULL,
NULL,
"cocoagl",
cocoagl_gfx_ctx_bind_hw_render,
};
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