The WebGLRenderingContext.copyTexSubImage2D()
method of the WebGL API copies pixels from the current WebGLFramebuffer
into an existing 2D texture sub-image.
WebGLRenderingContext.copyTexSubImage2D()
Syntax
copyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height)
Parameters
-
target
-
A
GLenum
specifying the binding point (target) of the active texture. Possible values:-
gl.TEXTURE_2D
: A two-dimensional texture. -
gl.TEXTURE_CUBE_MAP_POSITIVE_X
: Positive X face for a cube-mapped texture. -
gl.TEXTURE_CUBE_MAP_NEGATIVE_X
: Negative X face for a cube-mapped texture. -
gl.TEXTURE_CUBE_MAP_POSITIVE_Y
: Positive Y face for a cube-mapped texture. -
gl.TEXTURE_CUBE_MAP_NEGATIVE_Y
: Negative Y face for a cube-mapped texture. -
gl.TEXTURE_CUBE_MAP_POSITIVE_Z
: Positive Z face for a cube-mapped texture. -
gl.TEXTURE_CUBE_MAP_NEGATIVE_Z
: Negative Z face for a cube-mapped texture.
-
-
level
-
A
GLint
specifying the level of detail. Level 0 is the base image level and level n is the nth mipmap reduction level. -
xoffset
-
A
GLint
specifying the horizontal offset within the texture image. -
yoffset
-
A
GLint
specifying the vertical offset within the texture image. -
x
-
A
GLint
specifying the x coordinate of the lower left corner where to start copying. -
y
-
A
GLint
specifying the y coordinate of the lower left corner where to start copying. -
width
-
A
GLsizei
specifying the width of the texture. -
height
-
A
GLsizei
specifying the height of the texture.
Return value
None.
Examples
gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0, 0, 16, 16);
Specifications
Specification |
---|
WebGL Specification # 5.14.8 |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
copyTexSubImage2D |
9
|
12
|
4
|
11
|
12
|
5.1
|
4.4.3
|
25
|
4
|
12
|
8
|
1.5
|
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/copyTexSubImage2D