web api instance method
WebGLRenderingContext: copyTexSubImage2D() method
Available in workers
The copyTexSubImage2D() method of the WebGLRenderingContext interface of the WebGL API copies pixels from the current WebGLFramebuffer into a 2D texture sub-image.
Syntax
copyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height)
Parameters
target- : A
GLenumspecifying 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.
- : A
level- : A
GLintspecifying the level of detail. Level 0 is the base image level and level n is the n-th mipmap reduction level.
- : A
xoffset- : A
GLintspecifying the horizontal offset within the texture image.
- : A
yoffset- : A
GLintspecifying the vertical offset within the texture image.
- : A
x- : A
GLintspecifying the x coordinate of the lower left corner where to start copying.
- : A
y- : A
GLintspecifying the y coordinate of the lower left corner where to start copying.
- : A
width- : A
GLsizeispecifying the width of the texture in texels.
- : A
height- : A
GLsizeispecifying the height of the texture in texels.
- : A
Return value
None (undefined).
Examples
gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, 16, 16);
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.