glDepthRangeArray — specify mapping of depth values from normalized device coordinates to window coordinates for a specified set of viewports
void glDepthRangeArrayv(
|
GLuint first, |
| GLsizei count, | |
const GLdouble *v); |
first
Specifies the index of the first viewport whose depth range to update.
count
Specifies the number of viewports whose depth range to update.
v
Specifies the address of an array containing the near and far values for the depth range of each modified viewport.
After clipping and division by w,
depth coordinates range from
glDepthRangeArray specifies a linear mapping of the normalized depth coordinates
in this range to window depth coordinates for each viewport in the range [first,
first + count).
Thus,
the values accepted by glDepthRangeArray are both clamped to this range
before they are accepted.
The first parameter specifies the index of the first viewport whose depth
range to modify and must be less than the value of GL_MAX_VIEWPORTS.
count specifies the number of viewports whose depth range to modify.
first + count must be less than or equal to
the value of GL_MAX_VIEWPORTS. v specifies the address of an
array of pairs of double precision floating point values representing the near and far values of the
depth range for each viewport, in that order.
The setting of (0,1) maps the near plane to 0 and the far plane to 1. With this mapping, the depth buffer range is fully utilized.
It is not necessary that the near plane distance be less than the far plane distance.
Reverse mappings such as
The type of the v parameter was
changed from GLclampd to GLdouble. This change is
transparent to user code and is described in detail on the
removedTypes
page.
GL_INVALID_VALUE is generated if first is greater than or equal to
the value of GL_MAX_VIEWPORTS.
GL_INVALID_VALUE is generated if first + count
is greater than or equal to the value of GL_MAX_VIEWPORTS.
glGet with argument GL_DEPTH_RANGE
| OpenGL Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Function / Feature Name | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
glDepthRangeArrayv
|
- | - | - | - | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ |
glDepthFunc, glDepthRange, glDepthRangeIndexed, glPolygonOffset, glViewportArray, glViewport, removedTypes
Copyright © 2010-2014 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. http://opencontent.org/openpub/.