GLAPI/glPointParameter: Difference between revisions
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== Copyright == | == Copyright == | ||
Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see [ | Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see [https://khronos.org/registry/OpenGL-Refpages/LICENSES/LicenseRef-FreeB.txt LicenseRef-FreeB]. | ||
[[Category:Core API Ref Rasterization|PointParameter]] | [[Category:Core API Ref Rasterization|PointParameter]] | ||
[[Category:Core API Reference|PointParameter]] | [[Category:Core API Reference|PointParameter]] | ||
Latest revision as of 21:06, 5 February 2021
| Core in version | 4.6 | |
|---|---|---|
| Core since version | 1.4 | |
glPointParameter: specify point parameters
Function Definition
void glPointParameterf(GLenum pname, GLfloat param); void glPointParameteri(GLenum pname, GLint param);
- pname
- Specifies a single-valued point parameter. GL_POINT_FADE_THRESHOLD_SIZE, and GL_POINT_SPRITE_COORD_ORIGIN are accepted.
- param
- Specifies the value that pname will be set to.
Function Definition
void glPointParameterfv(GLenum pname, const GLfloat * params); void glPointParameteriv(GLenum pname, const GLint * params);
- pname
- Specifies a point parameter. GL_POINT_FADE_THRESHOLD_SIZE, and GL_POINT_SPRITE_COORD_ORIGIN are accepted.
- params
- Specifies the value to be assigned to pname..
Description
The following values are accepted for pname:
- GL_POINT_FADE_THRESHOLD_SIZE
params is a single floating-point value that specifies the threshold value to which point sizes are clamped if they exceed the specified value. The default value is 1.0.
- GL_POINT_SPRITE_COORD_ORIGIN
params is a single enum specifying the point sprite texture coordinate origin, either GL_LOWER_LEFT or GL_UPPER_LEFT. The default value is GL_UPPER_LEFT.
Errors
GL_INVALID_VALUE is generated if the value specified for GL_POINT_FADE_THRESHOLD_SIZE is less than zero.
GL_INVALID_ENUM is generated If the value specified for GL_POINT_SPRITE_COORD_ORIGIN is not GL_LOWER_LEFT or GL_UPPER_LEFT.
Associated Gets
glGet with argument GL_POINT_FADE_THRESHOLD_SIZE
glGet with argument GL_POINT_SPRITE_COORD_ORIGIN
See Also
Copyright
Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see LicenseRef-FreeB.