Glgetpixelmap - HP b2600 Reference Manual
Opengl 1.1 reference
Hide thumbs
Also See for b2600:
- Technical reference (206 pages) ,
- Administration manual (171 pages) ,
- Supplementary manual (108 pages)
Table of Contents
G
glGetPixelMap
glGetPixelMap
glGetPixelMapfv, glGetPixelMapuiv, glGetPixelMapusv: return the specified
pixel map.
C Specification
void glGetPixelMapfv
void glGetPixelMapuiv
void glGetPixelMapusv
Parameters
map
values
Description
See the glPixelMap reference page for a description of the acceptable values for the map
parameter. glGetPixelMap returns in values the contents of the pixel map specified in
map. Pixel maps are used during the execution of glReadPixels, glDrawPixels,
glCopyPixels, glTexImage1D, and glTexImage2D to map color indices, stencil indices,
color components, and depth components to other values.
Unsigned integer values, if requested, are linearly mapped from the internal fixed or
floating-point representation such that 1.0 maps to the largest representable integer
value, and 0.0 maps to 0. Return unsigned integer values are undefined if the map value
was not in the range [0, 1].
To determine the required size of map, call glGet with the appropriate symbolic
constant.
Notes
If an error is generated, no change is made to the contents of values.
Errors
•
204
GLenum map
GLfloat *values
GLenum map
GLuint *values
GLenum map
GLushort *values)
Specifies the name of the pixel map to return. Accepted values are
GL_PIXEL_MAP_I_TO_I, GL_PIXEL_MAP_S_TO_S,
GL_PIXEL_MAP_I_TO_R, GL_PIXEL_MAP_I_TO_G,
GL_PIXEL_MAP_I_TO_B, GL_PIXEL_MAP_I_TO_A,
GL_PIXEL_MAP_R_TO_R, GL_PIXEL_MAP_G_TO_G,
GL_PIXEL_MAP_B_TO_B, and GL_PIXEL_MAP_A_TO_A.
Returns the pixel map contents.
GL_INVALID_ENUM is generated if map is not an accepted value.
Chapter 7
- Quick Links:
- Legal Notices
- Table of Contents
Hide quick links:
Table of Contents
