1GLCOPYTEXSUBIMAGE1D(3G) [FIXME: manual] GLCOPYTEXSUBIMAGE1D(3G)
2
6 glCopyTexSubImage1D, glCopyTextureSubImage1D - copy a one-dimensional
7 texture subimage
8
10 void glCopyTexSubImage1D(GLenum target, GLint level, GLint xoffset,
11 GLint x, GLint y, GLsizei width);
12 void glCopyTextureSubImage1D(GLuint texture, GLint level,
14 GLint xoffset, GLint x, GLint y,
15 GLsizei width);
16
18 target
19 Specifies the target to which the texture object is bound for
20 glCopyTexSubImage1D function. Must be GL_TEXTURE_1D.
21 texture
23 Specifies the texture object name for glCopyTextureSubImage1D
24 function.
25 level
27 Specifies the level-of-detail number. Level 0 is the base image
28 level. Level n is the nth mipmap reduction image.
29 xoffset
31 Specifies the texel offset within the texture array.
32 x, y
34 Specify the window coordinates of the left corner of the row of
35 pixels to be copied.
36 width
38 Specifies the width of the texture subimage.
39
41 glCopyTexSubImage1D and glCopyTextureSubImage1D replace a portion of a
42 one-dimensional texture image with pixels from the current
43 GL_READ_BUFFER (rather than from main memory, as is the case for
44 glTexSubImage1D()). For glCopyTexSubImage1D, the texture object that is
45 bound to target will be used for the process. For
46 glCopyTextureSubImage1D, texture tells which texture object should be
47 used for the purpose of the call.
48 The screen-aligned pixel row with left corner at (x,\ y), and with
50 length width replaces the portion of the texture array with x indices
51 xoffset through xoffset + width - 1, inclusive. The destination in the
52 texture array may not include any texels outside the texture array as
53 it was originally specified.
54 The pixels in the row are processed exactly as if glReadPixels() had
56 been called, but the process stops just before final conversion. At
57 this point, all pixel component values are clamped to the range 0 1 and
58 then converted to the texture's internal format for storage in the
59 texel array.
60 It is not an error to specify a subtexture with zero width, but such a
62 specification has no effect. If any of the pixels within the specified
63 row of the current GL_READ_BUFFER are outside the read window
64 associated with the current rendering context, then the values obtained
65 for those pixels are undefined.
66 No change is made to the internalformat or width parameters of the
68 specified texture array or to texel values outside the specified
69 subregion.
70
72 The glPixelStore() mode affects texture images.
73
75 GL_INVALID_ENUM is generated by glCopyTexSubImage1D if target is not
76 GL_TEXTURE_1D.
77 GL_INVALID_FRAMEBUFFER_OPERATION is generated if the object bound to
79 GL_READ_FRAMEBUFFER_BINDING is not framebuffer complete.
80 GL_INVALID_OPERATION is generated by glCopyTextureSubImage1D if texture
82 is not the name of an existing texture object, or if the effective
83 target of texture is not GL_TEXTURE_1D.
84 GL_INVALID_OPERATION is generated if the texture array has not been
86 defined by a previous glTexImage1D(), glCopyTexImage1D(), or
87 glTexStorage1D() operation.
88 GL_INVALID_VALUE is generated if level is less than 0.
90 GL_INVALID_VALUE may be generated if level > log 2 max, where max is
92 the returned value of GL_MAX_TEXTURE_SIZE.
93 GL_INVALID_VALUE is generated if xoffset < 0, or xoffset + width > w,
95 where w is the GL_TEXTURE_WIDTH of the texture image being modified.
96 GL_INVALID_OPERATION is generated if:
98 · the read buffer is GL_NONE, or
100 · the value of GL_READ_FRAMEBUFFER_BINDING is non-zero, and:
102 · the read buffer selects an attachment that has no image
104 attached, or
105 · the effective value of GL_SAMPLE_BUFFERS for the read
107 framebuffer is one.
108
110 glGetTexImage()
111
113 ┌────────────────────────┬───────────────────────────────────────────────────────────────────────┐
114 │ │ OpenGL Version │
115 ├────────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
116 │Function │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
117 │/ │ │ │ │ │ │ │ │ │ │ │ │ │
118 │Feature │ │ │ │ │ │ │ │ │ │ │ │ │
119 │Name │ │ │ │ │ │ │ │ │ │ │ │ │
120 ├────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
121 │glCopyTexSubImage1D │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
122 ├────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
123 │glCopyTextureSubImage1D │ - │ - │ - │ - │ - │ - │ - │ - │ - │ - │ - │ ✔ │
124 └────────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘
125
127 glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage2D(),
128 glCopyTexSubImage3D(), glPixelStore(), glReadBuffer(), glTexImage1D(),
129 glTexImage2D(), glTexImage3D(), glTexParameter(), glTexSubImage1D(),
130 glTexSubImage2D(), glTexSubImage3D()
131
133 Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2012-2014
134 Khronos Group. This document is licensed under the SGI Free Software B
135 License. For details, see http://oss.sgi.com/projects/FreeB/.
136
138 Copyright © 2014 Khronos Group
139[FIXME: source] 03/06/2019 GLCOPYTEXSUBIMAGE1D(3G)