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: bilinear filter for rg88, float and half float added. Created 4 years, 5 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 case LUMINANCE_F32:

16 return 32;	17 return 32;

17 case RGBA_4444:	18 case RGBA_4444:

18 case RGB_565:	19 case RGB_565:

	20 case RG_88:

19 case LUMINANCE_F16:	21 case LUMINANCE_F16:

20 return 16;	22 return 16;

21 case ALPHA_8:	23 case ALPHA_8:

22 case LUMINANCE_8:	24 case LUMINANCE_8:

23 case RED_8:	25 case RED_8:

24 return 8;	26 return 8;

25 case ETC1:	27 case ETC1:

26 return 4;	28 return 4;

27 }	29 }

28 NOTREACHED();	30 NOTREACHED();

29 return 0;	31 return 0;

30 }	32 }

31	33

32 GLenum GLDataType(ResourceFormat format) {	34 GLenum GLDataType(ResourceFormat format) {

33 DCHECK_LE(format, RESOURCE_FORMAT_MAX);	35 DCHECK_LE(format, RESOURCE_FORMAT_MAX);

34 static const GLenum format_gl_data_type[] = {	36 static const GLenum format_gl_data_type[] = {

35 GL_UNSIGNED_BYTE, // RGBA_8888	37 GL_UNSIGNED_BYTE, // RGBA_8888

36 GL_UNSIGNED_SHORT_4_4_4_4, // RGBA_4444	38 GL_UNSIGNED_SHORT_4_4_4_4, // RGBA_4444

37 GL_UNSIGNED_BYTE, // BGRA_8888	39 GL_UNSIGNED_BYTE, // BGRA_8888

38 GL_UNSIGNED_BYTE, // ALPHA_8	40 GL_UNSIGNED_BYTE, // ALPHA_8

39 GL_UNSIGNED_BYTE, // LUMINANCE_8	41 GL_UNSIGNED_BYTE, // LUMINANCE_8

40 GL_UNSIGNED_SHORT_5_6_5, // RGB_565,	42 GL_UNSIGNED_SHORT_5_6_5, // RGB_565,

41 GL_UNSIGNED_BYTE, // ETC1	43 GL_UNSIGNED_BYTE, // ETC1

42 GL_UNSIGNED_BYTE, // RED_8	44 GL_UNSIGNED_BYTE, // RED_8

43 GL_HALF_FLOAT_OES, // LUMINANCE_F16	45 GL_HALF_FLOAT_OES, // LUMINANCE_F16

	46 GL_FLOAT, // LUMINANCE_F32

	47 GL_UNSIGNED_BYTE, // RG_88

44 };	48 };

45 static_assert(arraysize(format_gl_data_type) == (RESOURCE_FORMAT_MAX + 1),	49 static_assert(arraysize(format_gl_data_type) == (RESOURCE_FORMAT_MAX + 1),

46 "format_gl_data_type does not handle all cases.");	50 "format_gl_data_type does not handle all cases.");

47	51

48 return format_gl_data_type[format];	52 return format_gl_data_type[format];

49 }	53 }

50	54

51 GLenum GLDataFormat(ResourceFormat format) {	55 GLenum GLDataFormat(ResourceFormat format) {

52 DCHECK_LE(format, RESOURCE_FORMAT_MAX);	56 DCHECK_LE(format, RESOURCE_FORMAT_MAX);

53 static const GLenum format_gl_data_format[] = {	57 static const GLenum format_gl_data_format[] = {

54 GL_RGBA, // RGBA_8888	58 GL_RGBA, // RGBA_8888

55 GL_RGBA, // RGBA_4444	59 GL_RGBA, // RGBA_4444

56 GL_BGRA_EXT, // BGRA_8888	60 GL_BGRA_EXT, // BGRA_8888

57 GL_ALPHA, // ALPHA_8	61 GL_ALPHA, // ALPHA_8

58 GL_LUMINANCE, // LUMINANCE_8	62 GL_LUMINANCE, // LUMINANCE_8

59 GL_RGB, // RGB_565	63 GL_RGB, // RGB_565

60 GL_ETC1_RGB8_OES, // ETC1	64 GL_ETC1_RGB8_OES, // ETC1

61 GL_RED_EXT, // RED_8	65 GL_RED_EXT, // RED_8

62 GL_LUMINANCE, // LUMINANCE_F16	66 GL_LUMINANCE, // LUMINANCE_F16

	67 GL_LUMINANCE, // LUMINANCE_F32

	68 GL_RG_EXT, // RG_88

63 };	69 };

64 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),	70 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),

65 "format_gl_data_format does not handle all cases.");	71 "format_gl_data_format does not handle all cases.");

66 return format_gl_data_format[format];	72 return format_gl_data_format[format];

67 }	73 }

68	74

69 GLenum GLInternalFormat(ResourceFormat format) {	75 GLenum GLInternalFormat(ResourceFormat format) {

70 // In GLES2, the internal format must match the texture format. (It no longer	76 // 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.)	77 // is true in GLES3, however it still holds for the BGRA extension.)

72 return GLDataFormat(format);	78 return GLDataFormat(format);

(...skipping 10 matching lines...) Expand all Loading...
83 static const GLenum format_gl_data_format[] = {	89 static const GLenum format_gl_data_format[] = {

84 GL_RGBA, // RGBA_8888	90 GL_RGBA, // RGBA_8888

85 GL_RGBA, // RGBA_4444	91 GL_RGBA, // RGBA_4444

86 GL_RGBA, // BGRA_8888	92 GL_RGBA, // BGRA_8888

87 GL_ALPHA, // ALPHA_8	93 GL_ALPHA, // ALPHA_8

88 GL_LUMINANCE, // LUMINANCE_8	94 GL_LUMINANCE, // LUMINANCE_8

89 GL_RGB, // RGB_565	95 GL_RGB, // RGB_565

90 GL_RGB, // ETC1	96 GL_RGB, // ETC1

91 GL_LUMINANCE, // RED_8	97 GL_LUMINANCE, // RED_8

92 GL_LUMINANCE, // LUMINANCE_F16	98 GL_LUMINANCE, // LUMINANCE_F16

	99 GL_LUMINANCE, // LUMINANCE_F32

	100 GL_RG_EXT, // RG_88

93 };	101 };

94 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),	102 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),

95 "format_gl_data_format does not handle all cases.");	103 "format_gl_data_format does not handle all cases.");

96 return format_gl_data_format[format];	104 return format_gl_data_format[format];

97 }	105 }

98	106

99 gfx::BufferFormat BufferFormat(ResourceFormat format) {	107 gfx::BufferFormat BufferFormat(ResourceFormat format) {

100 switch (format) {	108 switch (format) {

101 case BGRA_8888:	109 case BGRA_8888:

102 return gfx::BufferFormat::BGRA_8888;	110 return gfx::BufferFormat::BGRA_8888;

103 case RED_8:	111 case RED_8:

104 return gfx::BufferFormat::R_8;	112 return gfx::BufferFormat::R_8;

105 case RGBA_4444:	113 case RGBA_4444:

106 return gfx::BufferFormat::RGBA_4444;	114 return gfx::BufferFormat::RGBA_4444;

107 case RGBA_8888:	115 case RGBA_8888:

108 return gfx::BufferFormat::RGBA_8888;	116 return gfx::BufferFormat::RGBA_8888;

109 case ETC1:	117 case ETC1:

110 return gfx::BufferFormat::ETC1;	118 return gfx::BufferFormat::ETC1;

111 case ALPHA_8:	119 case ALPHA_8:

112 case LUMINANCE_8:	120 case LUMINANCE_8:

113 case RGB_565:	121 case RGB_565:

114 case LUMINANCE_F16:	122 case LUMINANCE_F16:

	123 case LUMINANCE_F32:

	124 case RG_88:

115 break;	125 break;

116 }	126 }

117 NOTREACHED();	127 NOTREACHED();

118 return gfx::BufferFormat::RGBA_8888;	128 return gfx::BufferFormat::RGBA_8888;

119 }	129 }

120	130

121 bool IsResourceFormatCompressed(ResourceFormat format) {	131 bool IsResourceFormatCompressed(ResourceFormat format) {

122 return format == ETC1;	132 return format == ETC1;

123 }	133 }

124	134

125 bool DoesResourceFormatSupportAlpha(ResourceFormat format) {	135 bool DoesResourceFormatSupportAlpha(ResourceFormat format) {

126 switch (format) {	136 switch (format) {

127 case RGBA_4444:	137 case RGBA_4444:

128 case RGBA_8888:	138 case RGBA_8888:

129 case BGRA_8888:	139 case BGRA_8888:

130 case ALPHA_8:	140 case ALPHA_8:

131 return true;	141 return true;

132 case LUMINANCE_8:	142 case LUMINANCE_8:

133 case RGB_565:	143 case RGB_565:

134 case ETC1:	144 case ETC1:

135 case RED_8:	145 case RED_8:

136 case LUMINANCE_F16:	146 case LUMINANCE_F16:

	147 case LUMINANCE_F32:

	148 case RG_88:

137 return false;	149 return false;

138 }	150 }

139 NOTREACHED();	151 NOTREACHED();

140 return false;	152 return false;

141 }	153 }

142	154

143 } // namespace cc	155 } // namespace cc

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