glEnable — enable or disable server-side GL capabilities
glEnable and glDisable enable and disable various capabilities.
Use glIsEnabled or glGet to determine the current setting
of any capability. The initial value for each capability with the
GL_FALSE. The initial value for
glEnable and glDisable take a single argument,
which can assume one of the following values:
If enabled, blend the computed fragment color values with the values in the color buffers. See glBlendFunc.
If enabled, cull polygons based on their winding in window coordinates. See glCullFace.
If enabled, do depth comparisons and update the depth buffer. Note that even if the depth buffer exists and the depth mask is non-zero, the depth buffer is not updated if the depth test is disabled. See glDepthFunc and glDepthRangef.
If enabled, dither color components or indices before they are written to the color buffer.
If enabled, an offset is added to depth values of a polygon's fragments produced by rasterization. See glPolygonOffset.
If enabled, compute a temporary coverage value where each bit is determined by the alpha value at the corresponding sample location. The temporary coverage value is then ANDed with the fragment coverage value.
the fragment's coverage is ANDed with the temporary coverage value. If
GL_SAMPLE_COVERAGE_INVERT is set to
GL_TRUE, invert the coverage
If enabled, discard fragments that are outside the scissor rectangle. See glScissor.
open.gl - Depth and Stencil Buffers
open.gl - Transform Feedback
opengl-tutorial.org - Tutorial 10 : Transparency
opengl-tutorial.org - Tutorial 4 : A Colored Cube
opengl-tutorial.org - Tutorial 5 : A Textured Cube
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