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* Copyright 2017 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrMtlRenderTarget_DEFINED
#define GrMtlRenderTarget_DEFINED
#include "include/gpu/GrRenderTarget.h"
#include "include/gpu/GrBackendSurface.h"
#import <Metal/Metal.h>
class GrMtlGpu;
class GrMtlRenderTarget: public GrRenderTarget {
static sk_sp<GrMtlRenderTarget> MakeWrappedRenderTarget(GrMtlGpu*,
const GrSurfaceDesc&,
~GrMtlRenderTarget() override;
// override of GrRenderTarget
ResolveType getResolveType() const override {
return kCantResolve_ResolveType;
#if 0 // TODO figure this once we support msaa
if (this->numSamples() > 1) {
return kCanResolve_ResolveType;
return kAutoResolves_ResolveType;
bool canAttemptStencilAttachment() const override {
return true;
id<MTLTexture> mtlRenderTexture() const { return fRenderTexture; }
GrBackendRenderTarget getBackendRenderTarget() const override;
GrBackendFormat backendFormat() const override;
GrMtlRenderTarget(GrMtlGpu* gpu,
const GrSurfaceDesc& desc,
id<MTLTexture> renderTexture);
GrMtlGpu* getMtlGpu() const;
void onAbandon() override;
void onRelease() override;
// This accounts for the texture's memory and any MSAA renderbuffer's memory.
size_t onGpuMemorySize() const override {
int numColorSamples = this->numSamples();
// TODO: When used as render targets certain formats may actually have a larger size than
// the base format size. Check to make sure we are reporting the correct value here.
// The plus 1 is to account for the resolve texture or if not using msaa the RT itself
if (numColorSamples > 1) {
return GrSurface::ComputeSize(this->config(), this->width(), this->height(),
numColorSamples, GrMipMapped::kNo);
id<MTLTexture> fRenderTexture;
id<MTLTexture> fResolveTexture;
// Extra param to disambiguate from constructor used by subclasses.
enum Wrapped { kWrapped };
GrMtlRenderTarget(GrMtlGpu* gpu,
const GrSurfaceDesc& desc,
id<MTLTexture> renderTexture,
bool completeStencilAttachment() override;
typedef GrRenderTarget INHERITED;