org.lwjgl.opengl

Class ARBInternalformatQuery

java.lang.Object

org.lwjgl.opengl.ARBInternalformatQuery

public class ARBInternalformatQuery
extends java.lang.Object

Native bindings to the ARB_internalformat_query extension.

OpenGL 4.1 has a number of queries to indicate the maximum number of samples available for different formats. These give a coarse-grained query mechanism e.g. an implementation can expose different sample counts for integer and floating-point formats, but not for different floating-point formats. There is also no convenient way for the user to determine the granularity of sample counts available, only the maximum.

This extension adds a query mechanism that allows the user to determine which sample counts are available for a specific internal format.

Requires OpenGL 3.0 or ARB_framebuffer_object. Promoted to core in OpenGL 4.2.

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_NUM_SAMPLE_COUNTS Accepted by the pname parameter of GetInternalformativ.

Method Summary

Modifier and Type	Method and Description
static int	glGetInternalformati(int target, int internalformat, int pname) Retrieves information about implementation-dependent support for internal formats.
static void	glGetInternalformativ(int target, int internalformat, int pname, int[] params) Array version of: GetInternalformativ
static void	glGetInternalformativ(int target, int internalformat, int pname, java.nio.IntBuffer params) Retrieves information about implementation-dependent support for internal formats.
static void	nglGetInternalformativ(int target, int internalformat, int pname, int bufSize, long params) Unsafe version of: GetInternalformativ

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

GL_NUM_SAMPLE_COUNTS

public static final int GL_NUM_SAMPLE_COUNTS

Accepted by the pname parameter of GetInternalformativ.

See Also:

Constant Field Values

Method Detail

nglGetInternalformativ

public static void nglGetInternalformativ(int target,
                                          int internalformat,
                                          int pname,
                                          int bufSize,
                                          long params)

Unsafe version of: GetInternalformativ

Parameters:

bufSize - the maximum number of values that may be written to params by the function

glGetInternalformativ

public static void glGetInternalformativ(int target,
                                         int internalformat,
                                         int pname,
                                         java.nio.IntBuffer params)

Retrieves information about implementation-dependent support for internal formats.

Parameters:

target - the usage of the internal format. One of:

TEXTURE_1D	TEXTURE_2D	TEXTURE_1D_ARRAY	TEXTURE_RECTANGLE	TEXTURE_CUBE_MAP
TEXTURE_3D	TEXTURE_2D_ARRAY	TEXTURE_CUBE_MAP_ARRAY	RENDERBUFFER	TEXTURE_BUFFER
TEXTURE_2D_MULTISAMPLE	TEXTURE_2D_MULTISAMPLE_ARRAY

internalformat - the internal format about which to retrieve information

pname - the type of information to query

params - a variable into which to write the retrieved information

glGetInternalformati

public static int glGetInternalformati(int target,
                                       int internalformat,
                                       int pname)

Retrieves information about implementation-dependent support for internal formats.

Parameters:

target - the usage of the internal format. One of:

TEXTURE_1D	TEXTURE_2D	TEXTURE_1D_ARRAY	TEXTURE_RECTANGLE	TEXTURE_CUBE_MAP
TEXTURE_3D	TEXTURE_2D_ARRAY	TEXTURE_CUBE_MAP_ARRAY	RENDERBUFFER	TEXTURE_BUFFER
TEXTURE_2D_MULTISAMPLE	TEXTURE_2D_MULTISAMPLE_ARRAY

internalformat - the internal format about which to retrieve information

pname - the type of information to query

glGetInternalformativ

public static void glGetInternalformativ(int target,
                                         int internalformat,
                                         int pname,
                                         int[] params)

Array version of: GetInternalformativ