gl_SamplePosition — contains the location of the current sample within the current fragment
in vec2 gl_SamplePosition ;
gl_SamplePosition is a fragment language input variable that contains
the location within a fragment of the sample currently being processed. The x and y components
of gl_SamplePosition contain the sub-pixel coordinate of the current
sample and will have values in the range 0.0 to 1.0. The sub-pixel coordinates of the center
of the pixel are always (0.5, 0.5). Any static use of gl_SamplePosition
causes the entire fragment shader to be evaluated per-sample rather than per-fragment. When rendering
to a non-multisample buffer, gl_SamplePosition will be (0.5, 0.5).
| OpenGL ES Shading Language Version | ||||
|---|---|---|---|---|
| Function Name | 1.00 | 3.00 | 3.10 | 3.20 |
| gl_SamplePosition | - | - | - | ✔ |
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