gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt - Issue 864513004: gpu: introduce glCopySubTextureCHROMIUM

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Issue 864513004: gpu: introduce glCopySubTextureCHROMIUM (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: address concerns of owners Created 5 years, 10 months ago

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1 Name	1 Name

2	2

3 CHROMIUM_copy_texture	3 CHROMIUM_copy_texture

4	4

5 Name Strings	5 Name Strings

6	6

7 GL_CHROMIUM_copy_texture	7 GL_CHROMIUM_copy_texture

8	8

9 Version	9 Version

10	10

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29 If GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM and	29 If GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM and

30 GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM are enabled. Then no alpha	30 GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM are enabled. Then no alpha

31 processing occurs. This is the equivalent of having neither flag set.	31 processing occurs. This is the equivalent of having neither flag set.

32	32

33 The extension also supports copying BGRA textures and copying	33 The extension also supports copying BGRA textures and copying

34 EXTERNAL_OES texture to BGRA texture, which is not explicitly	34 EXTERNAL_OES texture to BGRA texture, which is not explicitly

35 granted by EXT_texture_format_BGRA8888.	35 granted by EXT_texture_format_BGRA8888.

36	36

37 New Procedures and Functions	37 New Procedures and Functions

38	38

39 void glCopyTextureCHROMIUM (GLenum target, GLenum source_id,	39 The command

40 GLenum dest_id, GLint level,

41 GLint internal_format, GLenum dest_type)

42	40

43 Copies the contents of texture referred to by <source_id> to texture	41 void glCopyTextureCHROMIUM (GLenum target, GLenum source_id,

44 <dest_id>.	42 GLenum dest_id, GLint level,

	43 GLint internal_format, GLenum dest_type)

	44

	45 Copies the contents of texture referred to by <source_id> to <dest_id>

	46 texture. If <source_id> texture is not defined or has different dimension

	47 to <dest_id> texture, define <source_id> texture same to <dest_id> texture.

45	48

46 Texture level 0 is copied from the source image to level <level> of the	49 Texture level 0 is copied from the source image to level <level> of the

47 destination texture. The level parameter must be 0 at present.	50 destination texture. The level parameter must be 0 at present.

48	51

49 The internal format of the destination texture is converted to that	52 The internal format of the destination texture is converted to that

50 specified by <internal_format>. Must be one of the following symbolic	53 specified by <internal_format>. Must be one of the following symbolic

51 constants: GL_RGB, GL_RGBA	54 constants: GL_RGB, GL_RGBA

52 The internal format of <source_id> texture must be one of the following	55 The internal format of <source_id> texture must be one of the following

53 symbolic constants: GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_RGB,	56 symbolic constants: GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_RGB,

54 GL_RGBA, GL_BGRA_EXT	57 GL_RGBA, GL_BGRA_EXT

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83 INVALID_VALUE is generated if textures corresponding to <dest_id> have not	86 INVALID_VALUE is generated if textures corresponding to <dest_id> have not

84 been bound as GL_TEXTURE_2D object.	87 been bound as GL_TEXTURE_2D object.

85	88

86 INVALID_VALUE is generated if textures corresponding to <source_id> have not	89 INVALID_VALUE is generated if textures corresponding to <source_id> have not

87 been bound as GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_ARB or	90 been bound as GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_ARB or

88 GL_TEXTURE_EXTERNAL_OES objects.	91 GL_TEXTURE_EXTERNAL_OES objects.

89	92

90 INVALID_VALUE is generated if <level> is not a valid level of the	93 INVALID_VALUE is generated if <level> is not a valid level of the

91 destination texture, or if level 0 of the source texture is not defined.	94 destination texture, or if level 0 of the source texture is not defined.

92	95

	96 The command

	97

	98 void glCopySubTextureCHROMIUM (GLenum target, GLenum source_id,

	99 GLenum dest_id, GLint level,

	100 GLint xoffset, GLint yoffset)

	101

	102 Copies the sub contents of texture referred to by <source_id> to <dest_id>

	103 texture without redefining <dest_id> texture.

	104

	105 See CopyTextureCHROMIUM for the interpretation of the <target> and <level>

	106 arguments.

	107

	108 <xoffset> and <yoffset> specify a texel offset in the x and y direction

	109 respectively within the destination texture.

	110

	111 INVALID_OPERATION is generated if source internal_format and destination

	112 internal_format are not one of the valid formats described above.

	113

	114 INVALID_VALUE is generated if <target> is not GL_TEXTURE_2D.

	115

	116 INVALID_OPERATION is generated if the destination texture has not been

	117 defined.

	118

	119 INVALID_VALUE is generated if <level> is less than 0.

	120

	121 INVALID_VALUE may be generated if <level> >log2(max), where max is
	Ken Russell (switch to Gerrit) 2015/02/25 22:19:10 I think this should say "is" instead of "may be". I think this should say "is" instead of "may be".
	122 the returned value of GL_MAX_TEXTURE_SIZE.

	123

	124 INVALID_VALUE is generated if <xoffset> < 0 , or <yoffset> < 0.

	125

	126 INVALID_VALUE is generated if (<xoffset> + source_width) > dest_width,

	127 or (<yoffset> + source_height) > dest_height.

	128

93 Errors	129 Errors

94	130

95 None.	131 None.

96	132

97 New Tokens	133 New Tokens

98	134

99 None.	135 None.

100	136

101 New State	137 New State

102	138

103 None.	139 None.

104	140

105 Revision History	141 Revision History

106	142

107 8/1/2011 Documented the extension	143 8/1/2011 Documented the extension

108 7/4/2013 Add a new parameter dest_type to glCopyTextureCHROMIUM()	144 7/4/2013 Add a new parameter dest_type to glCopyTextureCHROMIUM()

109 16/7/2014 Add GL_TEXTURE_RECTANGLE_ARB as valid source_id target.	145 16/7/2014 Add GL_TEXTURE_RECTANGLE_ARB as valid source_id target.

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