1 /*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "GrRenderTargetProxy.h"
9
10 #include "GrCaps.h"
11 #include "GrGpuResourcePriv.h"
12 #include "GrRenderTargetOpList.h"
13 #include "GrRenderTargetPriv.h"
14 #include "GrResourceProvider.h"
15 #include "GrTextureRenderTargetProxy.h"
16 #include "SkMathPriv.h"
17
18 // Deferred version
19 // TODO: we can probably munge the 'desc' in both the wrapped and deferred
20 // cases to make the sampleConfig/numSamples stuff more rational.
GrRenderTargetProxy(const GrCaps & caps,const GrSurfaceDesc & desc,SkBackingFit fit,SkBudgeted budgeted,uint32_t flags)21 GrRenderTargetProxy::GrRenderTargetProxy(const GrCaps& caps, const GrSurfaceDesc& desc,
22 SkBackingFit fit, SkBudgeted budgeted, uint32_t flags)
23 : INHERITED(desc, fit, budgeted, flags)
24 , fSampleCnt(desc.fSampleCnt)
25 , fRenderTargetFlags(GrRenderTargetFlags::kNone) {
26 // Since we know the newly created render target will be internal, we are able to precompute
27 // what the flags will ultimately end up being.
28 if (caps.usesMixedSamples() && fSampleCnt > 0) {
29 fRenderTargetFlags |= GrRenderTargetFlags::kMixedSampled;
30 }
31 if (caps.maxWindowRectangles() > 0) {
32 fRenderTargetFlags |= GrRenderTargetFlags::kWindowRectsSupport;
33 }
34 }
35
36 // Wrapped version
GrRenderTargetProxy(sk_sp<GrSurface> surf)37 GrRenderTargetProxy::GrRenderTargetProxy(sk_sp<GrSurface> surf)
38 : INHERITED(std::move(surf), SkBackingFit::kExact)
39 , fSampleCnt(fTarget->asRenderTarget()->numStencilSamples())
40 , fRenderTargetFlags(fTarget->asRenderTarget()->renderTargetPriv().flags()) {
41 }
42
maxWindowRectangles(const GrCaps & caps) const43 int GrRenderTargetProxy::maxWindowRectangles(const GrCaps& caps) const {
44 return (fRenderTargetFlags & GrRenderTargetFlags::kWindowRectsSupport)
45 ? caps.maxWindowRectangles()
46 : 0;
47 }
48
instantiate(GrResourceProvider * resourceProvider)49 bool GrRenderTargetProxy::instantiate(GrResourceProvider* resourceProvider) {
50 static constexpr GrSurfaceFlags kFlags = kRenderTarget_GrSurfaceFlag;
51
52 if (!this->instantiateImpl(resourceProvider, fSampleCnt, kFlags,
53 /* isMipped = */ false,
54 SkDestinationSurfaceColorMode::kLegacy)) {
55 return false;
56 }
57 SkASSERT(fTarget->asRenderTarget());
58 // Check that our a priori computation matched the ultimate reality
59 SkASSERT(fRenderTargetFlags == fTarget->asRenderTarget()->renderTargetPriv().flags());
60
61 return true;
62 }
63
createSurface(GrResourceProvider * resourceProvider) const64 sk_sp<GrSurface> GrRenderTargetProxy::createSurface(GrResourceProvider* resourceProvider) const {
65 static constexpr GrSurfaceFlags kFlags = kRenderTarget_GrSurfaceFlag;
66
67 sk_sp<GrSurface> surface = this->createSurfaceImpl(resourceProvider, fSampleCnt, kFlags,
68 /* isMipped = */ false,
69 SkDestinationSurfaceColorMode::kLegacy);
70 if (!surface) {
71 return nullptr;
72 }
73 SkASSERT(surface->asRenderTarget());
74 // Check that our a priori computation matched the ultimate reality
75 SkASSERT(fRenderTargetFlags == surface->asRenderTarget()->renderTargetPriv().flags());
76
77 return surface;
78 }
79
worstCaseWidth() const80 int GrRenderTargetProxy::worstCaseWidth() const {
81 if (fTarget) {
82 return fTarget->width();
83 }
84
85 if (SkBackingFit::kExact == fFit) {
86 return fWidth;
87 }
88 return SkTMax(GrResourceProvider::kMinScratchTextureSize, GrNextPow2(fWidth));
89 }
90
worstCaseHeight() const91 int GrRenderTargetProxy::worstCaseHeight() const {
92 if (fTarget) {
93 return fTarget->height();
94 }
95
96 if (SkBackingFit::kExact == fFit) {
97 return fHeight;
98 }
99 return SkTMax(GrResourceProvider::kMinScratchTextureSize, GrNextPow2(fHeight));
100 }
101
onUninstantiatedGpuMemorySize() const102 size_t GrRenderTargetProxy::onUninstantiatedGpuMemorySize() const {
103 int colorSamplesPerPixel = this->numColorSamples() + 1;
104 // TODO: do we have enough information to improve this worst case estimate?
105 return GrSurface::ComputeSize(fConfig, fWidth, fHeight, colorSamplesPerPixel, false,
106 SkBackingFit::kApprox == fFit);
107 }
108
refsWrappedObjects() const109 bool GrRenderTargetProxy::refsWrappedObjects() const {
110 if (!fTarget) {
111 return false;
112 }
113
114 return fTarget->resourcePriv().refsWrappedObjects();
115 }
116