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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 "src/gpu/GrRenderTarget.h"
#include "include/gpu/GrBackendSurface.h"
#include "src/gpu/GrGpu.h"
#import <Metal/Metal.h>
class GrMtlGpu;
class GrMtlRenderTarget: public GrRenderTarget {
// If sampleCnt is greater than 1 and the texture is single sampled, then a MSAA texture
// is created that will resolve to the wrapped single sample texture.
static sk_sp<GrMtlRenderTarget> MakeWrappedRenderTarget(GrMtlGpu*,
int sampleCnt,
~GrMtlRenderTarget() override;
bool canAttemptStencilAttachment() const override {
return true;
id<MTLTexture> mtlColorTexture() const { return fColorTexture; }
id<MTLTexture> mtlResolveTexture() const { return fResolveTexture; }
GrBackendRenderTarget getBackendRenderTarget() const override;
GrBackendFormat backendFormat() const override;
GrMtlRenderTarget(GrMtlGpu* gpu,
int sampleCnt,
id<MTLTexture> colorTexture,
id<MTLTexture> resolveTexture);
GrMtlRenderTarget(GrMtlGpu* gpu, SkISize, id<MTLTexture> colorTexture);
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->backendFormat(), this->dimensions(),
numColorSamples, GrMipmapped::kNo);
id<MTLTexture> fColorTexture;
id<MTLTexture> fResolveTexture;
// Extra param to disambiguate from constructor used by subclasses.
enum Wrapped { kWrapped };
GrMtlRenderTarget(GrMtlGpu* gpu,
int sampleCnt,
id<MTLTexture> colorTexture,
id<MTLTexture> resolveTexture,
GrMtlRenderTarget(GrMtlGpu* gpu, SkISize, id<MTLTexture> colorTexture, Wrapped);
bool completeStencilAttachment() override;
using INHERITED = GrRenderTarget;