The WebGLRenderingContext.copyTexImage2D()
method of the WebGL API copies pixels from the current WebGLFramebuffer
into a 2D texture image.
The WebGLRenderingContext.copyTexImage2D()
method of the WebGL API copies pixels from the current WebGLFramebuffer
into a 2D texture image.
js
copyTexImage2D(target, level, internalformat, x, y, width, height, border)
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 n-th mipmap reduction level.
internalformat
A GLenum
specifying the color components in the texture. Possible values:
gl.ALPHA
: Discards the red, green and blue components and reads the alpha component. gl.RGB
: Discards the alpha components and reads the red, green and blue components. gl.RGBA
: Red, green, blue and alpha components are read from the color buffer. gl.LUMINANCE
: Each color component is a luminance component, alpha is 1.0. gl.LUMINANCE_ALPHA
: Each component is a luminance/alpha component.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.
border
A GLint
specifying the width of the border. Must be 0.
None (undefined
).
js
gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, 512, 512, 0);
Specification |
---|
WebGL Specification # 5.14.8 |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
copyTexImage2D |
9 | 12 | 4 | 11 | 12 | 5.1 | 4.4.3 | 25 | 4 | 12 | 8 | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/copyTexImage2D