1GLCOPYTEXSUBIMAGE3D(3G) [FIXME: manual] GLCOPYTEXSUBIMAGE3D(3G)
2
6 glCopyTexSubImage3D, glCopyTextureSubImage3D - copy a three-dimensional
7 texture subimage
8
10 void glCopyTexSubImage3D(GLenum target, GLint level, GLint xoffset,
11 GLint yoffset, GLint zoffset, GLint x,
12 GLint y, GLsizei width, GLsizei height);
13 void glCopyTextureSubImage3D(GLuint texture, GLint level,
15 GLint xoffset, GLint yoffset,
16 GLint zoffset, GLint x, GLint y,
17 GLsizei width, GLsizei height);
18
20 target
21 Specifies the target to which the texture object is bound for
22 glCopyTexSubImage3D function. Must be GL_TEXTURE_3D or
23 GL_TEXTURE_2D_ARRAY.
24 texture
26 Specifies the texture object name for glCopyTextureSubImage3D
27 function.
28 level
30 Specifies the level-of-detail number. Level 0 is the base image
31 level. Level n is the nth mipmap reduction image.
32 xoffset
34 Specifies a texel offset in the x direction within the texture
35 array.
36 yoffset
38 Specifies a texel offset in the y direction within the texture
39 array.
40 zoffset
42 Specifies a texel offset in the z direction within the texture
43 array.
44 x, y
46 Specify the window coordinates of the lower left corner of the
47 rectangular region of pixels to be copied.
48 width
50 Specifies the width of the texture subimage.
51 height
53 Specifies the height of the texture subimage.
54
56 glCopyTexSubImage3D and glCopyTextureSubImage3D functions replace a
57 rectangular portion of a three-dimensional or two-dimensional array
58 texture image with pixels from the current GL_READ_BUFFER (rather than
59 from main memory, as is the case for glTexSubImage3D()).
60 The screen-aligned pixel rectangle with lower left corner at (x, y) and
62 with width width and height height replaces the portion of the texture
63 array with x indices xoffset through xoffset + width - 1, inclusive,
64 and y indices yoffset through yoffset + height - 1, inclusive, at z
65 index zoffset and at the mipmap level specified by level.
66 The pixels in the rectangle are processed exactly as if glReadPixels()
68 had been called, but the process stops just before final conversion. At
69 this point, all pixel component values are clamped to the range 0 1 and
70 then converted to the texture's internal format for storage in the
71 texel array.
72 The destination rectangle in the texture array may not include any
74 texels outside the texture array as it was originally specified. It is
75 not an error to specify a subtexture with zero width or height, but
76 such a specification has no effect.
77 If any of the pixels within the specified rectangle of the current
79 GL_READ_BUFFER are outside the read window associated with the current
80 rendering context, then the values obtained for those pixels are
81 undefined.
82 No change is made to the internalformat, width, height, depth, or
84 border parameters of the specified texture array or to texel values
85 outside the specified subregion.
86
88 glPixelStore() modes affect texture images.
89
91 GL_INVALID_ENUM is generated by glCopyTexSubImage3D if target is not
92 GL_TEXTURE_3D, GL_TEXTURE_2D_ARRAY or GL_TEXTURE_CUBE_MAP_ARRAY.
93 GL_INVALID_OPERATION is generated by glCopyTextureSubImage3D if the
95 effective target is not GL_TEXTURE_3D, GL_TEXTURE_2D_ARRAY,
96 GL_TEXTURE_CUBE_MAP_ARRAY or GL_TEXTURE_CUBE_MAP.
97 GL_INVALID_FRAMEBUFFER_OPERATION is generated if the object bound to
99 GL_READ_FRAMEBUFFER_BINDING is not framebuffer complete.
100 GL_INVALID_OPERATION is generated if the texture array has not been
102 defined by a previous glTexImage3D() or glTexStorage3D() operation.
103 GL_INVALID_OPERATION is generated by glCopyTextureSubImage3D if texture
105 is not the name of an existing texture object.
106 GL_INVALID_VALUE is generated if level is less than 0.
108 GL_INVALID_VALUE may be generated if level > log 2 max, where max is
110 the returned value of GL_MAX_3D_TEXTURE_SIZE if target is GL_TEXTURE_3D
111 or the returned value of GL_MAX_ARRAY_TEXTURE_LAYERS if target is
112 GL_TEXTURE_2D_ARRAY.
113 GL_INVALID_VALUE is generated if xoffset < 0, xoffset + width > w,
115 yoffset < 0, yoffset + height > h, zoffset < 0, or zoffset + 1 > d,
116 where w is the GL_TEXTURE_WIDTH, h is the GL_TEXTURE_HEIGHT, d is the
117 GL_TEXTURE_DEPTH and of the texture image being modified. Note that w,
118 h, and d include twice the border width.
119 GL_INVALID_OPERATION is generated if:
121 · the read buffer is GL_NONE, or
123 · the value of GL_READ_FRAMEBUFFER_BINDING is non-zero, and:
125 · the read buffer selects an attachment that has no image
127 attached, or
128 · the effective value of GL_SAMPLE_BUFFERS for the read
130 framebuffer is one.
131
133 glGetTexImage()
134
136 ┌────────────────────────┬───────────────────────────────────────────────────────────────────────┐
137 │ │ OpenGL Version │
138 ├────────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
139 │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 │
140 │/ │ │ │ │ │ │ │ │ │ │ │ │ │
141 │Feature │ │ │ │ │ │ │ │ │ │ │ │ │
142 │Name │ │ │ │ │ │ │ │ │ │ │ │ │
143 ├────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
144 │glCopyTexSubImage3D │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
145 ├────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
146 │glCopyTextureSubImage3D │ - │ - │ - │ - │ - │ - │ - │ - │ - │ - │ - │ ✔ │
147 └────────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘
148
150 glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage1D(),
151 glCopyTexSubImage2D(), glPixelStore(), glReadBuffer(), glTexImage1D(),
152 glTexImage2D(), glTexImage3D(), glTexParameter(), glTexSubImage1D(),
153 glTexSubImage2D(), glTexSubImage3D()
154
156 Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2012-2014
157 Khronos Group. This document is licensed under the SGI Free Software B
158 License. For details, see http://oss.sgi.com/projects/FreeB/.
159
161 Copyright © 2014 Khronos Group
162[FIXME: source] 07/13/2018 GLCOPYTEXSUBIMAGE3D(3G)