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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_CANVAS_COLOR_PARAMS_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_CANVAS_COLOR_PARAMS_H_
#include "components/viz/common/resources/resource_format.h"
#include "third_party/blink/renderer/platform/graphics/graphics_types.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/skia/include/core/SkColorSpace.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "ui/gfx/buffer_types.h"
class SkSurfaceProps;
namespace cc {
class PaintCanvas;
}
namespace gfx {
class ColorSpace;
}
namespace blink {
enum class CanvasColorSpace {
kSRGB,
kLinearRGB,
kRec2020,
kP3,
};
enum class CanvasPixelFormat {
kRGBA8,
kF16,
};
// todo(crbug/1021986) remove force_rgba in canvasColorParams
enum class CanvasForceRGBA { kForced, kNotForced };
class PLATFORM_EXPORT CanvasColorParams {
DISALLOW_NEW();
public:
// The default constructor will create an output-blended 8-bit surface.
CanvasColorParams();
CanvasColorParams(CanvasColorSpace,
CanvasPixelFormat,
OpacityMode,
CanvasForceRGBA);
explicit CanvasColorParams(const SkImageInfo&);
CanvasColorSpace ColorSpace() const { return color_space_; }
CanvasPixelFormat PixelFormat() const { return pixel_format_; }
OpacityMode GetOpacityMode() const { return opacity_mode_; }
CanvasForceRGBA GetForceRGBA() const { return force_rgba_; }
void SetCanvasColorSpace(CanvasColorSpace c) { color_space_ = c; }
void SetCanvasPixelFormat(CanvasPixelFormat f) { pixel_format_ = f; }
void SetOpacityMode(OpacityMode m) { opacity_mode_ = m; }
// Indicates if pixels in this canvas color settings require any color
// conversion to be used in the passed canvas color settings.
bool NeedsColorConversion(const CanvasColorParams&) const;
// The SkColorSpace to use in the SkImageInfo for allocated SkSurfaces. This
// is nullptr in legacy rendering mode and when the surface is supposed to be
// in sRGB (for which we wrap the canvas into a PaintCanvas along with an
// SkColorSpaceXformCanvas).
sk_sp<SkColorSpace> GetSkColorSpaceForSkSurfaces() const;
// The pixel format to use for allocating SkSurfaces.
SkColorType GetSkColorType() const;
uint8_t BytesPerPixel() const;
// The color space in which pixels read from the canvas via a shader will be
// returned. Note that for canvases with linear pixel math, these will be
// converted from their storage space into a linear space.
gfx::ColorSpace GetSamplerGfxColorSpace() const;
// Return the color space of the underlying data for the canvas.
gfx::ColorSpace GetStorageGfxColorSpace() const;
sk_sp<SkColorSpace> GetSkColorSpace() const;
SkAlphaType GetSkAlphaType() const;
const SkSurfaceProps* GetSkSurfaceProps() const;
// Gpu memory buffer parameters
gfx::BufferFormat GetBufferFormat() const;
uint32_t GLSizedInternalFormat() const; // For GLES2, use Unsized
uint32_t GLUnsizedInternalFormat() const;
uint32_t GLType() const;
viz::ResourceFormat TransferableResourceFormat() const;
private:
CanvasColorParams(const sk_sp<SkColorSpace> color_space,
SkColorType color_type);
CanvasColorSpace color_space_ = CanvasColorSpace::kSRGB;
CanvasPixelFormat pixel_format_ = CanvasPixelFormat::kRGBA8;
OpacityMode opacity_mode_ = kNonOpaque;
CanvasForceRGBA force_rgba_ = CanvasForceRGBA::kNotForced;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_CANVAS_COLOR_PARAMS_H_
|
