public class ARBMultisample
extends java.lang.Object
This extension provides a mechanism to antialias all GL primitives: points, lines, polygons, bitmaps, and images. The technique is to sample all primitives multiple times at each pixel. The color sample values are resolved to a single, displayable color each time a pixel is updated, so the antialiasing appears to be automatic at the application level. Because each sample includes depth and stencil information, the depth and stencil functions perform equivalently to the single-sample mode.
An additional buffer, called the multisample buffer, is added to the framebuffer. Pixel sample values, including color, depth, and stencil values, are stored in this buffer. When the framebuffer includes a multisample buffer, it does not also include separate depth or stencil buffers, even if the multisample buffer does not store depth or stencil values. Color buffers (left/right, front/back, and aux) do coexist with the multisample buffer, however.
Multisample antialiasing is most valuable for rendering polygons, because it requires no sorting for hidden surface elimination, and it correctly handles adjacent polygons, object silhouettes, and even intersecting polygons. If only points or lines are being rendered, the "smooth" antialiasing mechanism provided by the base GL may result in a higher quality image. This extension is designed to allow multisample and smooth antialiasing techniques to be alternated during the rendering of a single scene.
| Modifier and Type | Field and Description |
|---|---|
static int |
GL_MULTISAMPLE_ARB
Accepted by the
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev. |
static int |
GL_MULTISAMPLE_BIT_ARB
Accepted by the
mask parameter of PushAttrib. |
static int |
GL_SAMPLE_ALPHA_TO_COVERAGE_ARB
Accepted by the
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev. |
static int |
GL_SAMPLE_ALPHA_TO_ONE_ARB
Accepted by the
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev. |
static int |
GL_SAMPLE_BUFFERS_ARB
Accepted by the
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv. |
static int |
GL_SAMPLE_COVERAGE_ARB
Accepted by the
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev. |
static int |
GL_SAMPLE_COVERAGE_INVERT_ARB
Accepted by the
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv. |
static int |
GL_SAMPLE_COVERAGE_VALUE_ARB
Accepted by the
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv. |
static int |
GL_SAMPLES_ARB
Accepted by the
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv. |
| Modifier and Type | Method and Description |
|---|---|
static void |
glSampleCoverageARB(float value,
boolean invert)
Specifies simultaneously the values of
SAMPLE_COVERAGE_VALUE_ARB and SAMPLE_COVERAGE_INVERT_ARB. |
public static final int GL_MULTISAMPLE_ARB
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev.public static final int GL_SAMPLE_ALPHA_TO_COVERAGE_ARB
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev.public static final int GL_SAMPLE_ALPHA_TO_ONE_ARB
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev.public static final int GL_SAMPLE_COVERAGE_ARB
cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and
GetDoublev.public static final int GL_MULTISAMPLE_BIT_ARB
mask parameter of PushAttrib.public static final int GL_SAMPLE_BUFFERS_ARB
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv.public static final int GL_SAMPLES_ARB
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv.public static final int GL_SAMPLE_COVERAGE_VALUE_ARB
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv.public static final int GL_SAMPLE_COVERAGE_INVERT_ARB
pname parameter of GetBooleanv, GetDoublev, GetIntegerv, and GetFloatv.public static void glSampleCoverageARB(float value,
boolean invert)
SAMPLE_COVERAGE_VALUE_ARB and SAMPLE_COVERAGE_INVERT_ARB.
If SAMPLE_COVERAGE_ARB is enabled, the fragment coverage is ANDed with another temporary coverage. This temporary coverage is a function of the value
of SAMPLE_COVERAGE_VALUE_ARB. If SAMPLE_COVERAGE_INVERT_ARB is TRUE, the temporary coverage is inverted (all bit values are inverted) before it
is ANDed with the fragment coverage.
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