Graphics Reference
In-Depth Information
void glEnable (GLenum capability )
specifies the feature that should be turned on and affects
all rendering until the feature is turned off
capabi1ity
void glDisable (GLenum capability )
specifies the feature that should be turned off
capabi1ity
Additionally, you can determine if a feature is in use by calling the
following function:
GLboolean glIsEnabled (GLenum capability )
specifies which feature should be examined to determine
if it's enabled
capability
The capabilities controlled by glEnable and glDisable are listed in
Table 15-3.
Table 15-3
OpenGL ES 3.0 Capabilities Controlled by glEnable and
glDisable
Capability
Description
GL_CULL_FACE
Discard polygons whose vertex
winding order is opposite of
the specified front-facing mode
( GL_CW or GL_CCW , as specified
by glFrontFace )
GL_POLYGON_OFFSET_FILL
Offset the depth value of a
fragment to aid in rendering
coplanar geometry
GL_SCISSOR_TEST
Further restrict rendering to the
scissor box
(continues)
 
 
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