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[Impeller] adds hardware gate for wide gamut #46051

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merged 3 commits into from
Sep 19, 2023
Merged

[Impeller] adds hardware gate for wide gamut #46051

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87ec967
[Impeller] adds hardware check on gpu for wide gamut
gaaclarke Sep 19, 2023
de3eee2
chris feedback
gaaclarke Sep 19, 2023
f1e297d
removed unused lint
gaaclarke Sep 19, 2023
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25 changes: 24 additions & 1 deletion shell/platform/darwin/ios/framework/Source/FlutterDartProject.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@

#include <syslog.h>

#import <Metal/Metal.h>
#include <sstream>
#include <string>

Expand All @@ -22,6 +23,8 @@
#import "flutter/shell/platform/darwin/common/command_line.h"
#import "flutter/shell/platform/darwin/ios/framework/Headers/FlutterViewController.h"

FLUTTER_ASSERT_NOT_ARC

extern "C" {
#if FLUTTER_RUNTIME_MODE == FLUTTER_RUNTIME_MODE_DEBUG
// Used for debugging dart:* sources.
Expand All @@ -32,6 +35,23 @@

static const char* kApplicationKernelSnapshotFileName = "kernel_blob.bin";

static BOOL DoesHardwareSupportWideGamut() {
static BOOL result = NO;
static dispatch_once_t once_token = 0;
dispatch_once(&once_token, ^{
id<MTLDevice> device = MTLCreateSystemDefaultDevice();
if (@available(iOS 13.0, *)) {
// MTLGPUFamilyApple2 = A9/A10
result = [device supportsFamily:MTLGPUFamilyApple2];
} else {
// A9/A10 on iOS 10+
result = [device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily3_v2];
}
[device release];
});
return result;
}

flutter::Settings FLTDefaultSettingsForBundle(NSBundle* bundle, NSProcessInfo* processInfoOrNil) {
auto command_line = flutter::CommandLineFromNSProcessInfo(processInfoOrNil);

Expand Down Expand Up @@ -153,9 +173,12 @@
// As of Xcode 14.1, the wide gamut surface pixel formats are not supported by
// the simulator.
settings.enable_wide_gamut = false;
// Removes unused function warning.
(void)DoesHardwareSupportWideGamut;
#else
NSNumber* nsEnableWideGamut = [mainBundle objectForInfoDictionaryKey:@"FLTEnableWideGamut"];
BOOL enableWideGamut = nsEnableWideGamut ? nsEnableWideGamut.boolValue : YES;
BOOL enableWideGamut =
(nsEnableWideGamut ? nsEnableWideGamut.boolValue : YES) && DoesHardwareSupportWideGamut();
settings.enable_wide_gamut = enableWideGamut;
#endif

Expand Down