glViewport — set the viewport
void glViewport(
|
GLint x, |
| GLint y, | |
| GLsizei width, | |
GLsizei height); |
x,
y
Specify the lower left corner of the viewport rectangle, in pixels. The initial value is (0,0).
width,
height
Specify the width and height
of the viewport.
When a GL context is first attached to a window,
width and height are set to the dimensions of that
window.
glViewport specifies the affine transformation of
Viewport width and height are silently clamped
to a range that depends on the implementation.
To query this range, call glGet with argument
GL_MAX_VIEWPORT_DIMS.
GL_INVALID_VALUE is generated if either width or height is negative.
| OpenGL ES API Version | ||||
|---|---|---|---|---|
| Function Name | 2.0 | 3.0 | 3.1 | 3.2 |
| glViewport | ✔ | ✔ | ✔ | ✔ |
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