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Issue 864513004: gpu: introduce glCopySubTextureCHROMIUM (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 11 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, 40
41 GLint internal_format, GLenum dest_type) 41 void glCopyTextureCHROMIUM (GLenum target, GLenum source_id,
42 GLenum dest_id, GLint level,
43 GLint internal_format, GLenum dest_type)
42 44
43 Copies the contents of texture referred to by <source_id> to texture 45 Copies the contents of texture referred to by <source_id> to texture
44 <dest_id>. 46 <dest_id>.
45 47
46 Texture level 0 is copied from the source image to level <level> of the 48 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. 49 destination texture. The level parameter must be 0 at present.
48 50
49 The internal format of the destination texture is converted to that 51 The internal format of the destination texture is converted to that
50 specified by <internal_format>. Must be one of the following symbolic 52 specified by <internal_format>. Must be one of the following symbolic
51 constants: GL_RGB, GL_RGBA 53 constants: GL_RGB, GL_RGBA
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83 INVALID_VALUE is generated if textures corresponding to <dest_id> have not 85 INVALID_VALUE is generated if textures corresponding to <dest_id> have not
84 been bound as GL_TEXTURE_2D object. 86 been bound as GL_TEXTURE_2D object.
85 87
86 INVALID_VALUE is generated if textures corresponding to <source_id> have not 88 INVALID_VALUE is generated if textures corresponding to <source_id> have not
87 been bound as GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_ARB or 89 been bound as GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_ARB or
88 GL_TEXTURE_EXTERNAL_OES objects. 90 GL_TEXTURE_EXTERNAL_OES objects.
89 91
90 INVALID_VALUE is generated if <level> is not a valid level of the 92 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. 93 destination texture, or if level 0 of the source texture is not defined.
92 94
95 The command
96
97 void glCopySubTextureCHROMIUM (GLenum target, GLenum source_id,
98 GLenum dest_id, GLint level,
99 GLint xoffset, GLint yoffset)
100
101 Copies the sub contents of texture referred to by <source_id> to texture
102 <dest_id>.
103
104 See CopyTextureCHROMIUM for the interpretation of the <target> and <level>
105 arguments.
106
107 <xoffset> and <yoffset> specify a texel offset in the x and y direction
108 respectively within the destination texture.
109
110 INVALID_OPERATION is generated if source internal_format and destination
111 internal_format are not one of the valid formats described above.
112
113 INVALID_VALUE is generated if <target> is not GL_TEXTURE_2D.
114
115 INVALID_OPERATION is generated if the destination texture has not been
116 defined.
117
118 INVALID_VALUE is generated if <level> is less than 0.
119
120 INVALID_VALUE may be generated if <level> >log2(max), where max is
121 the returned value of GL_MAX_TEXTURE_SIZE.
122
123 INVALID_VALUE is generated if <xoffset> < 0 , or <yoffset> < 0.
124
125 INVALID_VALUE is generated if (<xoffset> + source_width) > dest_width,
126 or (<yoffset> + source_height) > dest_height.
127
93 Errors 128 Errors
94 129
95 None. 130 None.
96 131
97 New Tokens 132 New Tokens
98 133
99 None. 134 None.
100 135
101 New State 136 New State
102 137
103 None. 138 None.
104 139
105 Revision History 140 Revision History
106 141
107 8/1/2011 Documented the extension 142 8/1/2011 Documented the extension
108 7/4/2013 Add a new parameter dest_type to glCopyTextureCHROMIUM() 143 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. 144 16/7/2014 Add GL_TEXTURE_RECTANGLE_ARB as valid source_id target.
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