mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-24 00:20:01 +00:00
462 lines
12 KiB
Objective-C
462 lines
12 KiB
Objective-C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2018 - Stuart Carnie
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#import <Metal/Metal.h>
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#import <MetalKit/MetalKit.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <math.h>
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#include <string.h>
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#include <compat/strl.h>
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#include <gfx/scaler/scaler.h>
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#include <gfx/video_frame.h>
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#include <formats/image.h>
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#include <retro_inline.h>
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#include <retro_miscellaneous.h>
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#include <retro_math.h>
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#include <retro_assert.h>
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#include <libretro.h>
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#ifdef HAVE_CONFIG_H
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#import "../../config.h"
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#endif
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#ifdef HAVE_MENU
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#import "../../menu/menu_driver.h"
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#ifdef HAVE_MENU_WIDGETS
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#import "../../menu/widgets/menu_widgets.h"
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#endif
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#endif
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#import "../font_driver.h"
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#import "../common/metal_common.h"
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#import "../../driver.h"
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#import "../../configuration.h"
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#import "../../record/record_driver.h"
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#import "../../retroarch.h"
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#import "../../verbosity.h"
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#import "../video_coord_array.h"
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static bool metal_set_shader(void *data,
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enum rarch_shader_type type, const char *path);
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static void *metal_init(const video_info_t *video,
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const input_driver_t **input,
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void **input_data)
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{
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[apple_platform setViewType:APPLE_VIEW_TYPE_METAL];
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MetalDriver *md = [[MetalDriver alloc] initWithVideo:video input:input inputData:input_data];
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if (md == nil)
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{
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return NULL;
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}
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const char *shader_path = retroarch_get_shader_preset();
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if (shader_path)
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{
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enum rarch_shader_type type = video_shader_parse_type(shader_path, RARCH_SHADER_SLANG);
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metal_set_shader(((__bridge void *)md), type, shader_path);
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}
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return (__bridge_retained void *)md;
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}
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static bool metal_frame(void *data, const void *frame,
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unsigned frame_width, unsigned frame_height,
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uint64_t frame_count,
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unsigned pitch, const char *msg, video_frame_info_t *video_info)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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return [md renderFrame:frame
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width:frame_width
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height:frame_height
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frameCount:frame_count
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pitch:pitch
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msg:msg
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info:video_info];
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}
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static void metal_set_nonblock_state(void *data, bool non_block)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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md.context.displaySyncEnabled = !non_block;
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}
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static bool metal_alive(void *data)
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{
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return true;
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}
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static bool metal_has_windowed(void *data)
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{
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return true;
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}
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static bool metal_focus(void *data)
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{
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return apple_platform.hasFocus;
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}
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static bool metal_suppress_screensaver(void *data, bool disable)
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{
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RARCH_LOG("[Metal]: suppress screen saver: %s\n", disable ? "YES" : "NO");
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return [apple_platform setDisableDisplaySleep:disable];
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}
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static bool metal_set_shader(void *data,
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enum rarch_shader_type type, const char *path)
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{
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#if defined(HAVE_SLANG) && defined(HAVE_SPIRV_CROSS)
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return false;
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if (!path)
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return true;
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if (type != RARCH_SHADER_SLANG)
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{
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RARCH_WARN("[Metal] Only .slang or .slangp shaders are supported. Falling back to stock.\n");
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return false;
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}
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return [md.frameView setShaderFromPath:[NSString stringWithUTF8String:path]];
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#else
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return false;
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#endif
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}
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static void metal_free(void *data)
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{
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MetalDriver *md = (__bridge_transfer MetalDriver *)data;
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md = nil;
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}
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static void metal_set_viewport(void *data, unsigned viewport_width,
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unsigned viewport_height, bool force_full, bool allow_rotate)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (md == nil) {
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return;
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}
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[md setViewportWidth:viewport_width height:viewport_height forceFull:force_full allowRotate:allow_rotate];
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}
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static void metal_set_rotation(void *data, unsigned rotation)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (md == nil) {
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return;
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}
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[md setRotation:rotation];
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}
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static void metal_viewport_info(void *data, struct video_viewport *vp)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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*vp = *md.viewport;
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}
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static bool metal_read_viewport(void *data, uint8_t *buffer, bool is_idle)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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return [md.frameView readViewport:buffer isIdle:is_idle];
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}
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static uintptr_t metal_load_texture(void *video_data, void *data,
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bool threaded, enum texture_filter_type filter_type)
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{
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MetalDriver *md = (__bridge MetalDriver *)video_data;
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struct texture_image *img = (struct texture_image *)data;
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if (!img)
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return 0;
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struct texture_image image = *img;
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Texture *t = [md.context newTexture:image filter:filter_type];
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return (uintptr_t)(__bridge_retained void *)(t);
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}
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static void metal_unload_texture(void *data, uintptr_t handle)
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{
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if (!handle)
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return;
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Texture *t = (__bridge_transfer Texture *)(void *)handle;
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t = nil;
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}
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static void metal_set_video_mode(void *data,
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unsigned width, unsigned height,
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bool fullscreen)
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{
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RARCH_LOG("[Metal]: set_video_mode res=%dx%d fullscreen=%s\n",
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width, height,
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fullscreen ? "YES" : "NO");
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}
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static float metal_get_refresh_rate(void *data)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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(void)md;
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return 0.0f;
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}
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static void metal_set_filtering(void *data, unsigned index, bool smooth)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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[md.frameView setFilteringIndex:index smooth:smooth];
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}
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static void metal_set_aspect_ratio(void *data, unsigned aspect_ratio_idx)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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switch (aspect_ratio_idx)
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{
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case ASPECT_RATIO_SQUARE:
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video_driver_set_viewport_square_pixel();
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break;
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case ASPECT_RATIO_CORE:
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video_driver_set_viewport_core();
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break;
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case ASPECT_RATIO_CONFIG:
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video_driver_set_viewport_config();
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break;
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default:
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break;
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}
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video_driver_set_aspect_ratio_value(
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aspectratio_lut[aspect_ratio_idx].value);
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md.keepAspect = YES;
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[md setNeedsResize];
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}
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static void metal_apply_state_changes(void *data)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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[md setNeedsResize];
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}
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static void metal_set_texture_frame(void *data, const void *frame,
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bool rgb32, unsigned width, unsigned height,
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float alpha)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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settings_t *settings = config_get_ptr();
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[md.menu updateWidth:width
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height:height
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format:rgb32 ? RPixelFormatBGRA8Unorm : RPixelFormatBGRA4Unorm
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filter:settings->bools.menu_linear_filter ? RTextureFilterLinear : RTextureFilterNearest];
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[md.menu updateFrame:frame];
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md.menu.alpha = alpha;
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}
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static void metal_set_texture_enable(void *data, bool state, bool full_screen)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return;
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md.menu.enabled = state;
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#if 0
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md.menu.fullScreen = full_screen;
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#endif
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}
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static void metal_set_osd_msg(void *data,
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video_frame_info_t *video_info,
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const char *msg,
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const void *params, void *font)
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{
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font_driver_render_msg(video_info, font, msg, (const struct font_params *)params);
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}
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static void metal_show_mouse(void *data, bool state)
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{
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[apple_platform setCursorVisible:state];
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}
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static struct video_shader *metal_get_current_shader(void *data)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return NULL;
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return md.frameView.shader;
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}
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static uint32_t metal_get_flags(void *data)
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{
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uint32_t flags = 0;
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BIT32_SET(flags, GFX_CTX_FLAGS_CUSTOMIZABLE_SWAPCHAIN_IMAGES);
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BIT32_SET(flags, GFX_CTX_FLAGS_BLACK_FRAME_INSERTION);
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BIT32_SET(flags, GFX_CTX_FLAGS_MENU_FRAME_FILTERING);
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#if defined(HAVE_SLANG) && defined(HAVE_SPIRV_CROSS)
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BIT32_SET(flags, GFX_CTX_FLAGS_SHADERS_SLANG);
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#endif
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BIT32_SET(flags, GFX_CTX_FLAGS_SCREENSHOTS_SUPPORTED);
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return flags;
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}
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static const video_poke_interface_t metal_poke_interface = {
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.get_flags = metal_get_flags,
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.load_texture = metal_load_texture,
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.unload_texture = metal_unload_texture,
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.set_video_mode = metal_set_video_mode,
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.get_refresh_rate = metal_get_refresh_rate,
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.set_filtering = metal_set_filtering,
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.set_aspect_ratio = metal_set_aspect_ratio,
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.apply_state_changes = metal_apply_state_changes,
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.set_texture_frame = metal_set_texture_frame,
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.set_texture_enable = metal_set_texture_enable,
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.set_osd_msg = metal_set_osd_msg,
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.show_mouse = metal_show_mouse,
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.get_current_shader = metal_get_current_shader,
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};
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static void metal_get_poke_interface(void *data,
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const video_poke_interface_t **iface)
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{
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(void)data;
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*iface = &metal_poke_interface;
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}
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#ifdef HAVE_OVERLAY
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static void metal_overlay_enable(void *data, bool state)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return;
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md.overlay.enabled = state;
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}
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static bool metal_overlay_load(void *data,
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const void *images, unsigned num_images)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return NO;
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return [md.overlay loadImages:(const struct texture_image *)images count:num_images];
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}
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static void metal_overlay_tex_geom(void *data, unsigned index,
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float x, float y, float w, float h)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return;
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[md.overlay updateTextureCoordsX:x y:y w:w h:h index:index];
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}
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static void metal_overlay_vertex_geom(void *data, unsigned index,
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float x, float y, float w, float h)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return;
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[md.overlay updateVertexX:x y:y w:w h:h index:index];
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}
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static void metal_overlay_full_screen(void *data, bool enable)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return;
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md.overlay.fullscreen = enable;
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}
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static void metal_overlay_set_alpha(void *data, unsigned index, float mod)
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{
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MetalDriver *md = (__bridge MetalDriver *)data;
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if (!md)
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return;
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[md.overlay updateAlpha:mod index:index];
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}
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static const video_overlay_interface_t metal_overlay_interface = {
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.enable = metal_overlay_enable,
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.load = metal_overlay_load,
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.tex_geom = metal_overlay_tex_geom,
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.vertex_geom = metal_overlay_vertex_geom,
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.full_screen = metal_overlay_full_screen,
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.set_alpha = metal_overlay_set_alpha,
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};
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static void metal_get_overlay_interface(void *data,
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const video_overlay_interface_t **iface)
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{
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(void)data;
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*iface = &metal_overlay_interface;
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}
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#endif
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#if defined(HAVE_MENU) && defined(HAVE_MENU_WIDGETS)
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static bool metal_menu_widgets_enabled(void *data)
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{
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(void)data;
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return true;
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}
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#endif
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video_driver_t video_metal = {
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metal_init,
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metal_frame,
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metal_set_nonblock_state,
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metal_alive,
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metal_focus,
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metal_suppress_screensaver,
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metal_has_windowed,
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metal_set_shader,
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metal_free,
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"metal",
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metal_set_viewport,
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metal_set_rotation,
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metal_viewport_info,
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metal_read_viewport,
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NULL, /* read_frame_raw */
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#ifdef HAVE_OVERLAY
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metal_get_overlay_interface,
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#endif
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metal_get_poke_interface,
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NULL, /* metal_wrap_type_to_enum */
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#if defined(HAVE_MENU) && defined(HAVE_MENU_WIDGETS)
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metal_menu_widgets_enabled
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#endif
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};
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