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Side by Side Diff: gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt

Issue 972833004: Revert of gpu: introduce glCopySubTextureCHROMIUM (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 9 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 The command 39 void glCopyTextureCHROMIUM (GLenum target, GLenum source_id,
40 GLenum dest_id, GLint level,
41 GLint internal_format, GLenum dest_type)
40 42
41 void glCopyTextureCHROMIUM (GLenum target, GLenum source_id, 43 Copies the contents of texture referred to by <source_id> to texture
42 GLenum dest_id, 44 <dest_id>.
43 GLint internal_format, GLenum dest_type)
44 45
45 Copies the contents of texture referred to by <source_id> to <dest_id> 46 Texture level 0 is copied from the source image to level <level> of the
46 texture. If <source_id> texture is not defined or has different dimension 47 destination texture. The level parameter must be 0 at present.
47 to <dest_id> texture, define <source_id> texture same to <dest_id> texture.
48
49 Texture level 0 is copied from the source image to level 0 of the
50 destination texture.
51 48
52 The internal format of the destination texture is converted to that 49 The internal format of the destination texture is converted to that
53 specified by <internal_format>. Must be one of the following symbolic 50 specified by <internal_format>. Must be one of the following symbolic
54 constants: GL_RGB, GL_RGBA 51 constants: GL_RGB, GL_RGBA
55 The internal format of <source_id> texture must be one of the following 52 The internal format of <source_id> texture must be one of the following
56 symbolic constants: GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_RGB, 53 symbolic constants: GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_RGB,
57 GL_RGBA, GL_BGRA_EXT 54 GL_RGBA, GL_BGRA_EXT
58 When <source_id> texture doens't contain a superset of the component 55 When <source_id> texture doens't contain a superset of the component
59 required by <internal_format>, fill the components by following rules. 56 required by <internal_format>, fill the components by following rules.
60 57
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83 INVALID_VALUE is generated if <source_id> or <dest_id> are not valid texture 80 INVALID_VALUE is generated if <source_id> or <dest_id> are not valid texture
84 objects. 81 objects.
85 82
86 INVALID_VALUE is generated if textures corresponding to <dest_id> have not 83 INVALID_VALUE is generated if textures corresponding to <dest_id> have not
87 been bound as GL_TEXTURE_2D object. 84 been bound as GL_TEXTURE_2D object.
88 85
89 INVALID_VALUE is generated if textures corresponding to <source_id> have not 86 INVALID_VALUE is generated if textures corresponding to <source_id> have not
90 been bound as GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_ARB or 87 been bound as GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_ARB or
91 GL_TEXTURE_EXTERNAL_OES objects. 88 GL_TEXTURE_EXTERNAL_OES objects.
92 89
93 INVALID_VALUE is generated if level 0 of the source texture is not defined. 90 INVALID_VALUE is generated if <level> is not a valid level of the
94 91 destination texture, or if level 0 of the source texture is not defined.
95 The command
96
97 void glCopySubTextureCHROMIUM (GLenum target, GLenum source_id,
98 GLenum dest_id,
99 GLint xoffset, GLint yoffset)
100
101 Copies the sub contents of texture referred to by <source_id> to <dest_id>
102 texture without redefining <dest_id> texture.
103
104 See CopyTextureCHROMIUM for the interpretation of the <target> arguments.
105
106 <xoffset> and <yoffset> specify a texel offset in the x and y direction
107 respectively within the destination texture.
108
109 INVALID_OPERATION is generated if source internal_format and destination
110 internal_format are not one of the valid formats described above.
111
112 INVALID_VALUE is generated if <target> is not GL_TEXTURE_2D.
113
114 INVALID_OPERATION is generated if the destination texture has not been
115 defined.
116
117 INVALID_VALUE is generated if level 0 of the source texture or
118 the destination texture is not defined.
119
120 INVALID_VALUE is generated if <xoffset> < 0 , or <yoffset> < 0.
121
122 INVALID_VALUE is generated if (<xoffset> + source_width) > dest_width,
123 or (<yoffset> + source_height) > dest_height.
124 92
125 Errors 93 Errors
126 94
127 None. 95 None.
128 96
129 New Tokens 97 New Tokens
130 98
131 None. 99 None.
132 100
133 New State 101 New State
134 102
135 None. 103 None.
136 104
137 Revision History 105 Revision History
138 106
139 8/1/2011 Documented the extension 107 8/1/2011 Documented the extension
140 7/4/2013 Add a new parameter dest_type to glCopyTextureCHROMIUM() 108 7/4/2013 Add a new parameter dest_type to glCopyTextureCHROMIUM()
141 16/7/2014 Add GL_TEXTURE_RECTANGLE_ARB as valid source_id target. 109 16/7/2014 Add GL_TEXTURE_RECTANGLE_ARB as valid source_id target.
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