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RetroArch/gfx/drivers_context/cocoa_gl_ctx_metal.m

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2018 - Stuart Carnie
*
* 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/>.
*/
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#if TARGET_OS_IPHONE
#include <CoreGraphics/CoreGraphics.h>
#else
#include <ApplicationServices/ApplicationServices.h>
#endif
#if defined(HAVE_COCOA_METAL)
#include <OpenGL/CGLTypes.h>
#include <OpenGL/OpenGL.h>
#include <AppKit/NSScreen.h>
#include <AppKit/NSOpenGL.h>
#elif defined(HAVE_COCOATOUCH)
#include <GLKit/GLKit.h>
#endif
#include <retro_assert.h>
#include <compat/apple_compat.h>
#include "../../ui/drivers/ui_cocoa.h"
#include "../../ui/drivers/cocoa/cocoa_common.h"
#include "../video_driver.h"
#include "../../configuration.h"
#include "../../verbosity.h"
#ifdef HAVE_VULKAN
#include "../common/vulkan_common.h"
#endif
#if defined(HAVE_COCOATOUCH)
#define GLContextClass EAGLContext
#define GLFrameworkID CFSTR("com.apple.opengles")
#define RAScreen UIScreen
#ifndef UIUserInterfaceIdiomTV
#define UIUserInterfaceIdiomTV 2
#endif
#ifndef UIUserInterfaceIdiomCarPlay
#define UIUserInterfaceIdiomCarPlay 3
#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
static enum gfx_ctx_api cocoagl_api = GFX_CTX_NONE;
typedef struct cocoa_ctx_data
{
bool core_hw_context_enable;
#ifdef HAVE_VULKAN
gfx_ctx_vulkan_data_t vk;
int swap_interval;
#endif
unsigned width;
unsigned height;
} cocoa_ctx_data_t;
#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 = false;
#if defined(HAVE_COCOA_METAL)
static NSOpenGLPixelFormat* g_format;
void *glcontext_get_ptr(void)
{
return (BRIDGE void *)g_context;
}
#endif
static unsigned g_minor = 0;
static unsigned g_major = 0;
/* forward declaration */
void *nsview_get_ptr(void);
#include "cocoa_gl_shared.h"
static void *cocoagl_gfx_ctx_init(video_frame_info_t *video_info, void *video_driver)
{
cocoa_ctx_data_t *cocoa_ctx = (cocoa_ctx_data_t*)
calloc(1, sizeof(cocoa_ctx_data_t));
if (!cocoa_ctx)
return NULL;
switch (cocoagl_api)
{
#if defined(HAVE_COCOATOUCH)
case GFX_CTX_OPENGL_ES_API:
// setViewType is not (yet?) defined for iOS
// [apple_platform setViewType:APPLE_VIEW_TYPE_OPENGL_ES];
break;
#elif defined(HAVE_COCOA_METAL)
case GFX_CTX_OPENGL_API:
[apple_platform setViewType:APPLE_VIEW_TYPE_OPENGL];
break;
#endif
case GFX_CTX_VULKAN_API:
#ifdef HAVE_VULKAN
[apple_platform setViewType:APPLE_VIEW_TYPE_VULKAN];
if (!vulkan_context_init(&cocoa_ctx->vk, VULKAN_WSI_MVK_MACOS))
goto error;
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
return cocoa_ctx;
error:
free(cocoa_ctx);
return NULL;
}
static bool cocoagl_gfx_ctx_bind_api(void *data, enum gfx_ctx_api api,
unsigned major, unsigned minor)
{
(void)data;
switch (api)
{
#if defined(HAVE_COCOATOUCH)
case GFX_CTX_OPENGL_ES_API:
break;
#elif defined(HAVE_COCOA_METAL)
case GFX_CTX_OPENGL_API:
break;
#ifdef HAVE_VULKAN
case GFX_CTX_VULKAN_API:
break;
#endif
#endif
case GFX_CTX_NONE:
default:
return false;
}
cocoagl_api = api;
g_minor = minor;
g_major = major;
return true;
}
static void cocoagl_gfx_ctx_swap_interval(void *data, int interval)
{
#ifdef HAVE_VULKAN
cocoa_ctx_data_t *cocoa_ctx = (cocoa_ctx_data_t*)data;
#endif
switch (cocoagl_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
{
#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_METAL)
GLint value = interval ? 1 : 0;
[g_context setValues:&value forParameter:NSOpenGLCPSwapInterval];
#endif
break;
}
case GFX_CTX_VULKAN_API:
#ifdef HAVE_VULKAN
if (cocoa_ctx->swap_interval != interval)
{
cocoa_ctx->swap_interval = interval;
if (cocoa_ctx->vk.swapchain)
cocoa_ctx->vk.need_new_swapchain = true;
}
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
}
static bool cocoagl_gfx_ctx_set_video_mode(void *data,
video_frame_info_t *video_info,
unsigned width, unsigned height, bool fullscreen)
{
#if defined(HAVE_COCOA_METAL)
NSView *g_view = apple_platform.renderView;
#elif defined(HAVE_COCOA)
CocoaView *g_view = (CocoaView*)nsview_get_ptr();
#endif
cocoa_ctx_data_t *cocoa_ctx = (cocoa_ctx_data_t*)data;
cocoa_ctx->width = width;
cocoa_ctx->height = height;
switch (cocoagl_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
{
#if defined(HAVE_COCOA_METAL)
if ([g_view respondsToSelector: @selector(setWantsBestResolutionOpenGLSurface:)])
[g_view setWantsBestResolutionOpenGLSurface:YES];
NSOpenGLPixelFormatAttribute attributes [] = {
NSOpenGLPFAColorSize,
24,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAAllowOfflineRenderers,
NSOpenGLPFADepthSize,
(NSOpenGLPixelFormatAttribute)16, // 16 bit depth buffer
0, /* profile */
0, /* profile enum */
(NSOpenGLPixelFormatAttribute)0
};
#if MAC_OS_X_VERSION_10_7
if (g_major == 3 && (g_minor >= 1 && g_minor <= 3))
{
attributes[6] = NSOpenGLPFAOpenGLProfile;
attributes[7] = NSOpenGLProfileVersion3_2Core;
}
#endif
#if MAC_OS_X_VERSION_10_10
if (g_major == 4 && g_minor == 1)
{
attributes[6] = NSOpenGLPFAOpenGLProfile;
attributes[7] = NSOpenGLProfileVersion4_1Core;
}
#endif
g_format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attributes];
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1050
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
if (g_use_hw_ctx)
g_hw_ctx = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
g_context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
g_view.context = g_context;
#endif
[g_context makeCurrentContext];
break;
}
case GFX_CTX_VULKAN_API:
#ifdef HAVE_VULKAN
RARCH_LOG("[macOS]: Native window size: %u x %u.\n", cocoa_ctx->width, cocoa_ctx->height);
if (!vulkan_surface_create(&cocoa_ctx->vk,
VULKAN_WSI_MVK_MACOS, NULL,
(BRIDGE void *)g_view, cocoa_ctx->width, cocoa_ctx->height,
cocoa_ctx->swap_interval))
{
RARCH_ERR("[macOS]: Failed to create surface.\n");
return false;
}
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
#if defined(HAVE_COCOA_METAL)
static bool has_went_fullscreen = false;
/* TODO: Screen mode support. */
if (fullscreen)
{
if (!has_went_fullscreen)
{
[g_view enterFullScreenMode:(BRIDGE NSScreen *)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
/* TODO: Maybe iOS users should be able to show/hide the status bar here? */
return true;
}
#ifdef HAVE_VULKAN
static void *cocoagl_gfx_ctx_get_context_data(void *data)
{
cocoa_ctx_data_t *cocoa_ctx = (cocoa_ctx_data_t*)data;
return &cocoa_ctx->vk.context;
}
#endif
static void cocoagl_gfx_ctx_swap_buffers(void *data, void *data2)
{
#ifdef HAVE_VULKAN
cocoa_ctx_data_t *cocoa_ctx = (cocoa_ctx_data_t*)data;
#endif
switch (cocoagl_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
if (!(--g_fast_forward_skips < 0))
return;
#if defined(HAVE_COCOA_METAL)
[g_context flushBuffer];
[g_hw_ctx flushBuffer];
#elif defined(HAVE_COCOATOUCH)
if (g_view)
[g_view display];
#endif
g_fast_forward_skips = g_is_syncing ? 0 : 3;
break;
case GFX_CTX_VULKAN_API:
#ifdef HAVE_VULKAN
vulkan_present(&cocoa_ctx->vk, cocoa_ctx->vk.context.current_swapchain_index);
vulkan_acquire_next_image(&cocoa_ctx->vk);
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
}
static gfx_ctx_proc_t cocoagl_gfx_ctx_get_proc_address(const char *symbol_name)
{
switch (cocoagl_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
return (gfx_ctx_proc_t)CFBundleGetFunctionPointerForName(
CFBundleGetBundleWithIdentifier(GLFrameworkID),
(BRIDGE CFStringRef)BOXSTRING(symbol_name)
);
case GFX_CTX_NONE:
default:
break;
}
return NULL;
}
static bool cocoagl_gfx_ctx_set_resize(void *data, unsigned width, unsigned height)
{
#ifdef HAVE_VULKAN
cocoa_ctx_data_t *cocoa_ctx = (cocoa_ctx_data_t*)data;
#endif
switch (cocoagl_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
break;
case GFX_CTX_VULKAN_API:
#ifdef HAVE_VULKAN
cocoa_ctx->width = width;
cocoa_ctx->height = height;
if (vulkan_create_swapchain(&cocoa_ctx->vk,
width, height, cocoa_ctx->swap_interval))
{
cocoa_ctx->vk.context.invalid_swapchain = true;
if (cocoa_ctx->vk.created_new_swapchain)
vulkan_acquire_next_image(&cocoa_ctx->vk);
}
else
{
RARCH_ERR("[macOS/Vulkan]: Failed to update swapchain.\n");
return false;
}
cocoa_ctx->vk.need_new_swapchain = false;
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
return true;
}
static void cocoagl_gfx_ctx_check_window(void *data, bool *quit,
bool *resize, unsigned *width, unsigned *height, bool is_shutdown)
{
unsigned new_width, new_height;
#ifdef HAVE_VULKAN
cocoa_ctx_data_t *cocoa_ctx = (cocoa_ctx_data_t*)data;
#endif
*quit = false;
switch (cocoagl_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
break;
case GFX_CTX_VULKAN_API:
#ifdef HAVE_VULKAN
*resize = cocoa_ctx->vk.need_new_swapchain;
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
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 void cocoagl_gfx_ctx_bind_hw_render(void *data, bool enable)
{
(void)data;
switch (cocoagl_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
g_use_hw_ctx = enable;
if (enable)
[g_hw_ctx makeCurrentContext];
else
[g_context makeCurrentContext];
break;
case GFX_CTX_NONE:
default:
break;
}
}
const gfx_ctx_driver_t gfx_ctx_cocoagl = {
.init = cocoagl_gfx_ctx_init,
.destroy = cocoagl_gfx_ctx_destroy,
.get_api = cocoagl_gfx_ctx_get_api,
.bind_api = cocoagl_gfx_ctx_bind_api,
.swap_interval = cocoagl_gfx_ctx_swap_interval,
.set_video_mode = cocoagl_gfx_ctx_set_video_mode,
.get_video_size = cocoagl_gfx_ctx_get_video_size,
.get_metrics = cocoagl_gfx_ctx_get_metrics,
#if defined(HAVE_COCOA_METAL)
.update_window_title = cocoagl_gfx_ctx_update_title,
#endif
.check_window = cocoagl_gfx_ctx_check_window,
.set_resize = cocoagl_gfx_ctx_set_resize,
.has_focus = cocoagl_gfx_ctx_has_focus,
.suppress_screensaver = cocoagl_gfx_ctx_suppress_screensaver,
#if !defined(HAVE_COCOATOUCH)
.has_windowed = cocoagl_gfx_ctx_has_windowed,
#endif
.swap_buffers = cocoagl_gfx_ctx_swap_buffers,
.input_driver = cocoagl_gfx_ctx_input_driver,
.get_proc_address = cocoagl_gfx_ctx_get_proc_address,
.ident = "macOS",
.get_flags = cocoagl_gfx_ctx_get_flags,
.set_flags = cocoagl_gfx_ctx_set_flags,
.bind_hw_render = cocoagl_gfx_ctx_bind_hw_render,
#if defined(HAVE_VULKAN)
.get_context_data = cocoagl_gfx_ctx_get_context_data,
#else
.get_context_data = NULL,
#endif
};
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