glGetMultisamplefv — retrieve the location of a sample
void glGetMultisamplefv(
|
GLenum pname, |
| GLuint index, | |
GLfloat *val); |
pname
Specifies the sample parameter name. pname must be GL_SAMPLE_POSITION.
index
Specifies the index of the sample whose position to query.
val
Specifies the address of an array to receive the position of the sample.
glGetMultisamplefv queries the location of
a given sample. pname specifies the
sample parameter to retrieve and must be
GL_SAMPLE_POSITION.
index corresponds to the sample for which
the location should be returned. The sample location is returned
as two floating-point values in val[0]
and val[1], each between 0 and 1,
corresponding to the x and
y locations respectively in the GL pixel
space of that sample. (0.5, 0.5) thus corresponds to the pixel
center. index must be between zero and
the value of GL_SAMPLES minus one.
If the multisample mode does not have fixed sample locations, the returned values may only reflect the locations of samples within some pixels.
GL_INVALID_ENUM is generated if pname is not one GL_SAMPLE_POSITION.
GL_INVALID_VALUE is generated if index is greater than or equal to the value of
GL_SAMPLES.
| OpenGL ES API Version | ||||
|---|---|---|---|---|
| Function Name | 2.0 | 3.0 | 3.1 | 3.2 |
glGetMultisamplefv
|
- | - | ✔ | ✔ |
Copyright © 2010-2015 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. https://opencontent.org/openpub/.