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1 // Copyright 2017 The Chromium Authors. All rights reserved. | 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_GL_GL_SURFACE_FORMAT_H_ | 5 #ifndef UI_GL_GL_SURFACE_FORMAT_H_ |
6 #define UI_GL_GL_SURFACE_FORMAT_H_ | 6 #define UI_GL_GL_SURFACE_FORMAT_H_ |
7 | 7 |
8 #include "ui/gl/gl_export.h" | 8 #include "ui/gl/gl_export.h" |
9 | 9 |
10 namespace gl { | 10 namespace gl { |
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28 GLSurfaceFormat(); | 28 GLSurfaceFormat(); |
29 | 29 |
30 // Use a specified pixel layout, cf. gl_surface_osmesa. | 30 // Use a specified pixel layout, cf. gl_surface_osmesa. |
31 GLSurfaceFormat(SurfacePixelLayout layout); | 31 GLSurfaceFormat(SurfacePixelLayout layout); |
32 | 32 |
33 // Copy constructor from pre-existing format. | 33 // Copy constructor from pre-existing format. |
34 GLSurfaceFormat(const GLSurfaceFormat& other); | 34 GLSurfaceFormat(const GLSurfaceFormat& other); |
35 | 35 |
36 ~GLSurfaceFormat(); | 36 ~GLSurfaceFormat(); |
37 | 37 |
38 // Helper method to determine if the format is unchanged from the | |
39 // default at creation time. TODO(klausw): can this be removed? | |
40 bool IsDefault(); | |
41 | |
42 // Surfaceless appears as a format property for backwards | |
43 // compatibility with the previous enum-based implementation. | |
44 // TODO(klausw): consider removing it and/or merging it into the | |
45 // pre-existing IsSurfaceless() predicate for the various Surface | |
46 // subclasses? | |
47 void SetIsSurfaceless(); | |
48 bool IsSurfaceless(); | |
49 | |
50 // A given pair of surfaces is considered compatible if glSetSurface | 38 // A given pair of surfaces is considered compatible if glSetSurface |
51 // can be used to switch between them without generating BAD_MATCH | 39 // can be used to switch between them without generating BAD_MATCH |
52 // errors, visual errors, or gross inefficiency, and incompatible | 40 // errors, visual errors, or gross inefficiency, and incompatible |
53 // otherwise. For example, a pixel layout mismatch would be | 41 // otherwise. For example, a pixel layout mismatch would be |
54 // considered incompatible. This comparison only makes sense within | 42 // considered incompatible. This comparison only makes sense within |
55 // the context of a single gl_surface subtype. | 43 // the context of a single gl_surface subtype. |
56 bool IsCompatible(GLSurfaceFormat other_format); | 44 bool IsCompatible(GLSurfaceFormat other_format); |
57 | 45 |
58 // Default pixel format is RGBA8888. Use this method to select | 46 // Default pixel format is RGBA8888. Use this method to select |
59 // a preference of RGB565. TODO(klausw): use individual setter | 47 // a preference of RGB565. TODO(klausw): use individual setter |
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73 void SetDefaultPixelLayout(SurfacePixelLayout layout); | 61 void SetDefaultPixelLayout(SurfacePixelLayout layout); |
74 | 62 |
75 SurfacePixelLayout GetPixelLayout(); | 63 SurfacePixelLayout GetPixelLayout(); |
76 | 64 |
77 // Compute number of bits needed for storing one pixel, not | 65 // Compute number of bits needed for storing one pixel, not |
78 // including any padding. At this point mainly used to distinguish | 66 // including any padding. At this point mainly used to distinguish |
79 // RGB565 (16) from RGBA8888 (32). | 67 // RGB565 (16) from RGBA8888 (32). |
80 int GetBufferSize(); | 68 int GetBufferSize(); |
81 | 69 |
82 private: | 70 private: |
83 bool is_default_ = true; | |
84 SurfacePixelLayout pixel_layout_ = PIXEL_LAYOUT_DONT_CARE; | 71 SurfacePixelLayout pixel_layout_ = PIXEL_LAYOUT_DONT_CARE; |
85 bool is_surfaceless_ = false; | |
86 int red_bits_ = -1; | 72 int red_bits_ = -1; |
87 int green_bits_ = -1; | 73 int green_bits_ = -1; |
88 int blue_bits_ = -1; | 74 int blue_bits_ = -1; |
89 int alpha_bits_ = -1; | 75 int alpha_bits_ = -1; |
90 int depth_bits_ = -1; | 76 int depth_bits_ = -1; |
91 int samples_ = -1; | 77 int samples_ = -1; |
92 int stencil_bits_ = -1; | 78 int stencil_bits_ = -1; |
93 }; | 79 }; |
94 | 80 |
95 } // namespace gl | 81 } // namespace gl |
96 | 82 |
97 #endif // UI_GL_GL_SURFACE_FORMAT_H_ | 83 #endif // UI_GL_GL_SURFACE_FORMAT_H_ |
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