1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrTextureMaker_DEFINED
#define GrTextureMaker_DEFINED
#include "GrTextureProducer.h"
/**
* Base class for sources that start out as something other than a texture (encoded image,
* picture, ...).
*/
class GrTextureMaker : public GrTextureProducer {
public:
enum class AllowedTexGenType : bool { kCheap, kAny };
std::unique_ptr<GrFragmentProcessor> createFragmentProcessor(
const SkMatrix& textureMatrix,
const SkRect& constraintRect,
FilterConstraint filterConstraint,
bool coordsLimitedToConstraintRect,
const GrSamplerState::Filter* filterOrNullForBicubic,
SkColorSpace* dstColorSpace) override;
protected:
GrTextureMaker(GrContext* context, int width, int height, bool isAlphaOnly)
: INHERITED(context, width, height, isAlphaOnly) {}
/**
* Return the maker's "original" texture. It is the responsibility of the maker to handle any
* caching of the original if desired.
* If "genType" argument equals AllowedTexGenType::kCheap and the texture is not trivial to
* construct then refOriginalTextureProxy should return nullptr (for example if texture is made
* by drawing into a render target).
*/
virtual sk_sp<GrTextureProxy> refOriginalTextureProxy(bool willBeMipped,
SkColorSpace* dstColorSpace,
AllowedTexGenType genType) = 0;
/**
* Returns the color space of the maker's "original" texture, assuming it was retrieved with
* the same destination color space.
*/
virtual sk_sp<SkColorSpace> getColorSpace(SkColorSpace* dstColorSpace) = 0;
GrContext* context() const { return fContext; }
private:
sk_sp<GrTextureProxy> onRefTextureProxyForParams(const GrSamplerState&,
SkColorSpace* dstColorSpace,
sk_sp<SkColorSpace>* proxyColorSpace,
bool willBeMipped,
SkScalar scaleAdjust[2]) override;
typedef GrTextureProducer INHERITED;
};
#endif
|
