GLAPI/glPointParameter: Difference between revisions
< GLAPI
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; pname | ; pname | ||
: Specifies a single-valued point parameter. {{ | : Specifies a single-valued point parameter. {{enum|GL_POINT_FADE_THRESHOLD_SIZE}}, and {{enum|GL_POINT_SPRITE_COORD_ORIGIN}} are accepted. | ||
; param | ; param | ||
: Specifies the value that {{param|pname}} will be set to. | : Specifies the value that {{param|pname}} will be set to. | ||
| Line 22: | Line 22: | ||
; pname | ; pname | ||
: Specifies a point parameter. {{ | : Specifies a point parameter. {{enum|GL_POINT_FADE_THRESHOLD_SIZE}}, and {{enum|GL_POINT_SPRITE_COORD_ORIGIN}} are accepted. | ||
; params | ; params | ||
: Specifies the value to be assigned to {{param|pname}}.. | : Specifies the value to be assigned to {{param|pname}}.. | ||
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The following values are accepted for {{param|pname}}: | The following values are accepted for {{param|pname}}: | ||
; {{ | ; {{enum|GL_POINT_FADE_THRESHOLD_SIZE}} | ||
: | : | ||
{{param|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. | {{param|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. | ||
; {{ | ; {{enum|GL_POINT_SPRITE_COORD_ORIGIN}} | ||
: | : | ||
{{param|params}} is a single enum specifying the point sprite texture coordinate origin, either {{ | {{param|params}} is a single enum specifying the point sprite texture coordinate origin, either {{enum|GL_LOWER_LEFT}} or {{enum|GL_UPPER_LEFT}}. The default value is {{enum|GL_UPPER_LEFT}}. | ||
== Errors == | == Errors == | ||
{{ | {{enum|GL_INVALID_VALUE}} is generated if the value specified for {{enum|GL_POINT_FADE_THRESHOLD_SIZE}} is less than zero. | ||
{{ | {{enum|GL_INVALID_ENUM}} is generated If the value specified for {{enum|GL_POINT_SPRITE_COORD_ORIGIN}} is not {{enum|GL_LOWER_LEFT}} or {{enum|GL_UPPER_LEFT}}. | ||
== Associated Gets == | == Associated Gets == | ||
{{apifunc|glGet}} with argument {{ | {{apifunc|glGet}} with argument {{enum|GL_POINT_FADE_THRESHOLD_SIZE}} | ||
{{apifunc|glGet}} with argument {{ | {{apifunc|glGet}} with argument {{enum|GL_POINT_SPRITE_COORD_ORIGIN}} | ||
== See Also == | == See Also == | ||
Revision as of 17:27, 29 April 2012
| 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 http://oss.sgi.com/projects/FreeB/.