cc/resources/resource_format.cc - Issue 2121043002: 16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support.

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Issue 2121043002: 16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support. Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: WebGL video to texture support and readPixels from R16UI for CPU access Created 4 years, 4 months ago

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1 // Copyright 2013 The Chromium Authors. All rights reserved.	1 // Copyright 2013 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 #include "cc/resources/resource_format.h"	5 #include "cc/resources/resource_format.h"

6	6

7 #include "third_party/khronos/GLES2/gl2.h"	7 #include "third_party/khronos/GLES2/gl2.h"

8 #include "third_party/khronos/GLES2/gl2ext.h"	8 #include "third_party/khronos/GLES2/gl2ext.h"

9	9

10 namespace cc {	10 namespace cc {

11	11

12 int BitsPerPixel(ResourceFormat format) {	12 int BitsPerPixel(ResourceFormat format) {

13 switch (format) {	13 switch (format) {

14 case BGRA_8888:	14 case BGRA_8888:

15 case RGBA_8888:	15 case RGBA_8888:

16 return 32;	16 return 32;

17 case RGBA_4444:	17 case RGBA_4444:

18 case RGB_565:	18 case RGB_565:

	19 case RG_88:

19 case LUMINANCE_F16:	20 case LUMINANCE_F16:

20 return 16;	21 return 16;

21 case ALPHA_8:	22 case ALPHA_8:

22 case LUMINANCE_8:	23 case LUMINANCE_8:

23 case RED_8:	24 case RED_8:

24 return 8;	25 return 8;

25 case ETC1:	26 case ETC1:

26 return 4;	27 return 4;

27 }	28 }

28 NOTREACHED();	29 NOTREACHED();

29 return 0;	30 return 0;

30 }	31 }

31	32

32 GLenum GLDataType(ResourceFormat format) {	33 GLenum GLDataType(ResourceFormat format) {

33 DCHECK_LE(format, RESOURCE_FORMAT_MAX);	34 DCHECK_LE(format, RESOURCE_FORMAT_MAX);

34 static const GLenum format_gl_data_type[] = {	35 static const GLenum format_gl_data_type[] = {

35 GL_UNSIGNED_BYTE, // RGBA_8888	36 GL_UNSIGNED_BYTE, // RGBA_8888

36 GL_UNSIGNED_SHORT_4_4_4_4, // RGBA_4444	37 GL_UNSIGNED_SHORT_4_4_4_4, // RGBA_4444

37 GL_UNSIGNED_BYTE, // BGRA_8888	38 GL_UNSIGNED_BYTE, // BGRA_8888

38 GL_UNSIGNED_BYTE, // ALPHA_8	39 GL_UNSIGNED_BYTE, // ALPHA_8

39 GL_UNSIGNED_BYTE, // LUMINANCE_8	40 GL_UNSIGNED_BYTE, // LUMINANCE_8

40 GL_UNSIGNED_SHORT_5_6_5, // RGB_565,	41 GL_UNSIGNED_SHORT_5_6_5, // RGB_565,

41 GL_UNSIGNED_BYTE, // ETC1	42 GL_UNSIGNED_BYTE, // ETC1

42 GL_UNSIGNED_BYTE, // RED_8	43 GL_UNSIGNED_BYTE, // RED_8

43 GL_HALF_FLOAT_OES, // LUMINANCE_F16	44 GL_HALF_FLOAT_OES, // LUMINANCE_F16

	45 GL_UNSIGNED_BYTE, // RG_88

44 };	46 };

45 static_assert(arraysize(format_gl_data_type) == (RESOURCE_FORMAT_MAX + 1),	47 static_assert(arraysize(format_gl_data_type) == (RESOURCE_FORMAT_MAX + 1),

46 "format_gl_data_type does not handle all cases.");	48 "format_gl_data_type does not handle all cases.");

47	49

48 return format_gl_data_type[format];	50 return format_gl_data_type[format];

49 }	51 }

50	52

51 GLenum GLDataFormat(ResourceFormat format) {	53 GLenum GLDataFormat(ResourceFormat format) {

52 DCHECK_LE(format, RESOURCE_FORMAT_MAX);	54 DCHECK_LE(format, RESOURCE_FORMAT_MAX);

53 static const GLenum format_gl_data_format[] = {	55 static const GLenum format_gl_data_format[] = {

54 GL_RGBA, // RGBA_8888	56 GL_RGBA, // RGBA_8888

55 GL_RGBA, // RGBA_4444	57 GL_RGBA, // RGBA_4444

56 GL_BGRA_EXT, // BGRA_8888	58 GL_BGRA_EXT, // BGRA_8888

57 GL_ALPHA, // ALPHA_8	59 GL_ALPHA, // ALPHA_8

58 GL_LUMINANCE, // LUMINANCE_8	60 GL_LUMINANCE, // LUMINANCE_8

59 GL_RGB, // RGB_565	61 GL_RGB, // RGB_565

60 GL_ETC1_RGB8_OES, // ETC1	62 GL_ETC1_RGB8_OES, // ETC1

61 GL_RED_EXT, // RED_8	63 GL_RED_EXT, // RED_8

62 GL_LUMINANCE, // LUMINANCE_F16	64 GL_LUMINANCE, // LUMINANCE_F16

	65 GL_RG_EXT, // RG_88

63 };	66 };

64 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),	67 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),

65 "format_gl_data_format does not handle all cases.");	68 "format_gl_data_format does not handle all cases.");

66 return format_gl_data_format[format];	69 return format_gl_data_format[format];

67 }	70 }

68	71

69 GLenum GLInternalFormat(ResourceFormat format) {	72 GLenum GLInternalFormat(ResourceFormat format) {

70 // In GLES2, the internal format must match the texture format. (It no longer	73 // In GLES2, the internal format must match the texture format. (It no longer

71 // is true in GLES3, however it still holds for the BGRA extension.)	74 // is true in GLES3, however it still holds for the BGRA extension.)

72 return GLDataFormat(format);	75 return GLDataFormat(format);

(...skipping 10 matching lines...) Expand all Loading...
83 static const GLenum format_gl_data_format[] = {	86 static const GLenum format_gl_data_format[] = {

84 GL_RGBA, // RGBA_8888	87 GL_RGBA, // RGBA_8888

85 GL_RGBA, // RGBA_4444	88 GL_RGBA, // RGBA_4444

86 GL_RGBA, // BGRA_8888	89 GL_RGBA, // BGRA_8888

87 GL_ALPHA, // ALPHA_8	90 GL_ALPHA, // ALPHA_8

88 GL_LUMINANCE, // LUMINANCE_8	91 GL_LUMINANCE, // LUMINANCE_8

89 GL_RGB, // RGB_565	92 GL_RGB, // RGB_565

90 GL_RGB, // ETC1	93 GL_RGB, // ETC1

91 GL_LUMINANCE, // RED_8	94 GL_LUMINANCE, // RED_8

92 GL_LUMINANCE, // LUMINANCE_F16	95 GL_LUMINANCE, // LUMINANCE_F16

	96 GL_RG_EXT, // RG_88

93 };	97 };

94 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),	98 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),

95 "format_gl_data_format does not handle all cases.");	99 "format_gl_data_format does not handle all cases.");

96 return format_gl_data_format[format];	100 return format_gl_data_format[format];

97 }	101 }

98	102

99 gfx::BufferFormat BufferFormat(ResourceFormat format) {	103 gfx::BufferFormat BufferFormat(ResourceFormat format) {

100 switch (format) {	104 switch (format) {

101 case BGRA_8888:	105 case BGRA_8888:

102 return gfx::BufferFormat::BGRA_8888;	106 return gfx::BufferFormat::BGRA_8888;

103 case RED_8:	107 case RED_8:

104 return gfx::BufferFormat::R_8;	108 return gfx::BufferFormat::R_8;

105 case RGBA_4444:	109 case RGBA_4444:

106 return gfx::BufferFormat::RGBA_4444;	110 return gfx::BufferFormat::RGBA_4444;

107 case RGBA_8888:	111 case RGBA_8888:

108 return gfx::BufferFormat::RGBA_8888;	112 return gfx::BufferFormat::RGBA_8888;

109 case ETC1:	113 case ETC1:

110 return gfx::BufferFormat::ETC1;	114 return gfx::BufferFormat::ETC1;

111 case ALPHA_8:	115 case ALPHA_8:

112 case LUMINANCE_8:	116 case LUMINANCE_8:

113 case RGB_565:	117 case RGB_565:

114 case LUMINANCE_F16:	118 case LUMINANCE_F16:

	119 case RG_88:

115 break;	120 break;

116 }	121 }

117 NOTREACHED();	122 NOTREACHED();

118 return gfx::BufferFormat::RGBA_8888;	123 return gfx::BufferFormat::RGBA_8888;

119 }	124 }

120	125

121 bool IsResourceFormatCompressed(ResourceFormat format) {	126 bool IsResourceFormatCompressed(ResourceFormat format) {

122 return format == ETC1;	127 return format == ETC1;

123 }	128 }

124	129

125 bool DoesResourceFormatSupportAlpha(ResourceFormat format) {	130 bool DoesResourceFormatSupportAlpha(ResourceFormat format) {

126 switch (format) {	131 switch (format) {

127 case RGBA_4444:	132 case RGBA_4444:

128 case RGBA_8888:	133 case RGBA_8888:

129 case BGRA_8888:	134 case BGRA_8888:

130 case ALPHA_8:	135 case ALPHA_8:

131 return true;	136 return true;

132 case LUMINANCE_8:	137 case LUMINANCE_8:

133 case RGB_565:	138 case RGB_565:

134 case ETC1:	139 case ETC1:

135 case RED_8:	140 case RED_8:

136 case LUMINANCE_F16:	141 case LUMINANCE_F16:

	142 case RG_88:

137 return false;	143 return false;

138 }	144 }

139 NOTREACHED();	145 NOTREACHED();

140 return false;	146 return false;

141 }	147 }

142	148

143 } // namespace cc	149 } // namespace cc

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