skia2/tools/skottie_ios_app/SkMetalViewBridge.mm
Jim Van Verth e27670172b Add method to delay drawable acquisition from MTKView
Change-Id: Iad9fadd113d0c97e8ece51df19c7824252d7eb9c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/263197
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
2020-01-08 18:28:13 +00:00

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// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/skottie_ios_app/SkMetalViewBridge.h"
#include "include/core/SkSurface.h"
#include "include/gpu/GrBackendSurface.h"
#include "include/gpu/GrContext.h"
#include "include/gpu/GrContextOptions.h"
#include "include/gpu/mtl/GrMtlTypes.h"
#import <Metal/Metal.h>
#import <MetalKit/MetalKit.h>
sk_sp<SkSurface> SkMtkViewToSurface(MTKView* mtkView, GrContext* grContext) {
if (!grContext ||
MTLPixelFormatDepth32Float_Stencil8 != [mtkView depthStencilPixelFormat] ||
MTLPixelFormatBGRA8Unorm != [mtkView colorPixelFormat]) {
return nullptr;
}
const SkColorType colorType = kBGRA_8888_SkColorType; // MTLPixelFormatBGRA8Unorm
sk_sp<SkColorSpace> colorSpace = nullptr; // MTLPixelFormatBGRA8Unorm
const GrSurfaceOrigin origin = kTopLeft_GrSurfaceOrigin;
const SkSurfaceProps surfaceProps(SkSurfaceProps::kLegacyFontHost_InitType);
int sampleCount = (int)[mtkView sampleCount];
return SkSurface::MakeFromMTKView(grContext, (__bridge GrMTLHandle)mtkView, origin, sampleCount,
colorType, colorSpace, &surfaceProps);
}
void GrContextRelease::operator()(GrContext* ptr) { SkSafeUnref(ptr); }
GrContextHolder SkMetalDeviceToGrContext(id<MTLDevice> device, id<MTLCommandQueue> queue) {
GrContextOptions grContextOptions; // set different options here.
return GrContextHolder(GrContext::MakeMetal((__bridge void*)device,
(__bridge void*)queue,
grContextOptions).release());
}
void SkMtkViewConfigForSkia(MTKView* mtkView) {
[mtkView setDepthStencilPixelFormat:MTLPixelFormatDepth32Float_Stencil8];
[mtkView setColorPixelFormat:MTLPixelFormatBGRA8Unorm];
[mtkView setSampleCount:1];
}