Class NVSampleLocations
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- org.lwjgl.opengles.NVSampleLocations
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public class NVSampleLocations extends java.lang.Object
Native bindings to the NV_sample_locations extension.This extension allows an application to modify the locations of samples within a pixel used in multisample rasterization. Additionally, it allows applications to specify different sample locations for each pixel in a group of adjacent pixels, which may increase antialiasing quality (particularly if a custom resolve shader is used that takes advantage of these different locations).
It is common for implementations to optimize the storage of depth values by storing values that can be used to reconstruct depth at each sample location, rather than storing separate depth values for each sample. For example, the depth values from a single triangle can be represented using plane equations. When the depth value for a sample is needed, it is automatically evaluated at the sample location. Modifying the sample locations causes the reconstruction to no longer evaluate the same depth values as when the samples were originally generated. This extension provides a command to "resolve" and store per-sample depth values using the currently programmed sample locations, which allows the application to manage this issue if/when necessary.
The programmable sample locations are used during rasterization and for evaluation of depth functions during normal geometric rendering. The programmable locations are associated with a framebuffer object rather than an individual depth buffer, so if the depth buffer is used as a texture the texture sampling may be done at the standard sample locations. Additionally, commands that do not render geometric primitives (e.g. ReadPixels, BlitFramebuffer, CopyTexSubImage2D, etc.) may use the standard sample locations to resolve depth functions rather than the programmable locations. If a single depth buffer is used at different times with different sample locations, the depth functions may be interpreted using the current sample locations.
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Field Summary
Fields Modifier and Type Field Description static int
GL_FRAMEBUFFER_PROGRAMMABLE_SAMPLE_LOCATIONS_NV
GL_FRAMEBUFFER_SAMPLE_LOCATION_PIXEL_GRID_NVAccepted by thepname
parameter of FramebufferParameteri, GetFramebufferParameteriv.static int
GL_PROGRAMMABLE_SAMPLE_LOCATION_NV
Accepted by thepname
parameter of GetMultisamplefv.static int
GL_PROGRAMMABLE_SAMPLE_LOCATION_TABLE_SIZE_NV
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static int
GL_SAMPLE_LOCATION_NV
Accepted by thepname
parameter of GetMultisamplefv.static int
GL_SAMPLE_LOCATION_PIXEL_GRID_HEIGHT_NV
GL_SAMPLE_LOCATION_PIXEL_GRID_WIDTH_NV
GL_SAMPLE_LOCATION_SUBPIXEL_BITS_NVAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static void
glFramebufferSampleLocationsfvNV(int target, int start, float[] v)
Array version of:FramebufferSampleLocationsfvNV
static void
glFramebufferSampleLocationsfvNV(int target, int start, java.nio.FloatBuffer v)
static void
glNamedFramebufferSampleLocationsfvNV(int framebuffer, int start, float[] v)
Array version of:NamedFramebufferSampleLocationsfvNV
static void
glNamedFramebufferSampleLocationsfvNV(int framebuffer, int start, java.nio.FloatBuffer v)
static void
glResolveDepthValuesNV()
static void
nglFramebufferSampleLocationsfvNV(int target, int start, int count, long v)
static void
nglNamedFramebufferSampleLocationsfvNV(int framebuffer, int start, int count, long v)
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Field Detail
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GL_SAMPLE_LOCATION_SUBPIXEL_BITS_NV, GL_SAMPLE_LOCATION_PIXEL_GRID_WIDTH_NV, GL_SAMPLE_LOCATION_PIXEL_GRID_HEIGHT_NV, GL_PROGRAMMABLE_SAMPLE_LOCATION_TABLE_SIZE_NV
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.
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GL_SAMPLE_LOCATION_NV, GL_PROGRAMMABLE_SAMPLE_LOCATION_NV
Accepted by thepname
parameter of GetMultisamplefv.
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GL_FRAMEBUFFER_PROGRAMMABLE_SAMPLE_LOCATIONS_NV, GL_FRAMEBUFFER_SAMPLE_LOCATION_PIXEL_GRID_NV
Accepted by thepname
parameter of FramebufferParameteri, GetFramebufferParameteriv.
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Method Detail
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nglFramebufferSampleLocationsfvNV
public static void nglFramebufferSampleLocationsfvNV(int target, int start, int count, long v)
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glFramebufferSampleLocationsfvNV
public static void glFramebufferSampleLocationsfvNV(int target, int start, java.nio.FloatBuffer v)
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nglNamedFramebufferSampleLocationsfvNV
public static void nglNamedFramebufferSampleLocationsfvNV(int framebuffer, int start, int count, long v)
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glNamedFramebufferSampleLocationsfvNV
public static void glNamedFramebufferSampleLocationsfvNV(int framebuffer, int start, java.nio.FloatBuffer v)
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glResolveDepthValuesNV
public static void glResolveDepthValuesNV()
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glFramebufferSampleLocationsfvNV
public static void glFramebufferSampleLocationsfvNV(int target, int start, float[] v)
Array version of:FramebufferSampleLocationsfvNV
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glNamedFramebufferSampleLocationsfvNV
public static void glNamedFramebufferSampleLocationsfvNV(int framebuffer, int start, float[] v)
Array version of:NamedFramebufferSampleLocationsfvNV
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