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Always cache SkSL when using the Metal backend. (flutter/engine#17468)

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There is no ability to compile shaders online and cache those binaries when
using the Metal backend. SkSL caching must always be used.
This commit is contained in:
Chinmay Garde 2020-04-02 13:00:29 -07:00 committed by GitHub
parent 5a49380308
commit 165af3205c
1 changed files with 18 additions and 2 deletions
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20
engine/src/flutter/shell/platform/darwin/ios/ios_context_metal.mm
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@ -5,10 +5,22 @@
#include "flutter/shell/platform/darwin/ios/ios_context_metal.h"
#include "flutter/fml/logging.h"
#include "flutter/shell/common/persistent_cache.h"
#include "flutter/shell/platform/darwin/ios/ios_external_texture_metal.h"
#include "third_party/skia/include/gpu/GrContextOptions.h"
namespace flutter {
static GrContextOptions CreateMetalGrContextOptions() {
GrContextOptions options = {};
if (PersistentCache::cache_sksl()) {
options.fShaderCacheStrategy = GrContextOptions::ShaderCacheStrategy::kSkSL;
}
PersistentCache::MarkStrategySet();
options.fPersistentCache = PersistentCache::GetCacheForProcess();
return options;
}
IOSContextMetal::IOSContextMetal() {
device_.reset([MTLCreateSystemDefaultDevice() retain]);
if (!device_) {
@ -25,16 +37,20 @@ IOSContextMetal::IOSContextMetal() {
[main_queue_ setLabel:@"Flutter Main Queue"];
const auto& context_options = CreateMetalGrContextOptions();
// Skia expect arguments to `MakeMetal` transfer ownership of the reference in for release later
// when the GrContext is collected.
main_context_ = GrContext::MakeMetal([device_ retain], [main_queue_ retain]);
resource_context_ = GrContext::MakeMetal([device_ retain], [main_queue_ retain]);
main_context_ = GrContext::MakeMetal([device_ retain], [main_queue_ retain], context_options);
resource_context_ = GrContext::MakeMetal([device_ retain], [main_queue_ retain], context_options);
if (!main_context_ || !resource_context_) {
FML_DLOG(ERROR) << "Could not create Skia Metal contexts.";
return;
}
resource_context_->setResourceCacheLimits(0u, 0u);
CVMetalTextureCacheRef texture_cache_raw = NULL;
auto cv_return = CVMetalTextureCacheCreate(kCFAllocatorDefault, // allocator
NULL, // cache attributes (NULL default)