blob: eba8e320d8fa2b2df52ba12f723642f128a2f7e7 (
plain)
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
|
/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkGammaColorFilter.h"
#include "SkReadBuffer.h"
#include "SkString.h"
#if SK_SUPPORT_GPU
#include "effects/GrGammaEffect.h"
#endif
void SkGammaColorFilter::filterSpan(const SkPMColor src[], int count,
SkPMColor dst[]) const {
// Gamma-correcting bytes to bytes is pretty questionable.
SkASSERT(0);
for (int i = 0; i < count; ++i) {
SkPMColor c = src[i];
// TODO: implement cpu gamma correction?
dst[i] = c;
}
}
sk_sp<SkColorFilter> SkGammaColorFilter::Make(SkScalar gamma) {
return sk_sp<SkColorFilter>(new SkGammaColorFilter(gamma));
}
SkGammaColorFilter::SkGammaColorFilter(SkScalar gamma) : fGamma(gamma) {}
sk_sp<SkFlattenable> SkGammaColorFilter::CreateProc(SkReadBuffer& buffer) {
SkScalar gamma = buffer.readScalar();
return Make(gamma);
}
void SkGammaColorFilter::flatten(SkWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writeScalar(fGamma);
}
#ifndef SK_IGNORE_TO_STRING
void SkGammaColorFilter::toString(SkString* str) const {
str->appendf("SkGammaColorFilter (%.2f)", fGamma);
}
#endif
#if SK_SUPPORT_GPU
sk_sp<GrFragmentProcessor> SkGammaColorFilter::asFragmentProcessor(GrContext*) const {
return GrGammaEffect::Make(fGamma);
}
#endif
|
