org.lwjgl.opengl

Class NVQueryResource

java.lang.Object

org.lwjgl.opengl.NVQueryResource

public class NVQueryResource
extends java.lang.Object

Native bindings to the NV_query_resource extension.

OpenGL implementations manage the residence of textures, shaders, and other graphical objects in GPU accessible memory (whether in on-board video memory or addressable system memory is implementation dependent). With more insight into OpenGL's memory usage 1) applications could make educated decisions on better utilizing the limited GPU resources, 2) users could better optimize their workflow when working with multiple tools, and 3) administrators can make better decisions regarding resource allocation and system configurations.

The purpose of this extension is to return a more detailed breakdown of memory usage in terms of the OpenGL objects residing in memory (textures, render buffers, buffer objects, system reserved objects, ...). This extension differs from GL_NVX_gpu_memory_info in that this extension returns detailed memory usage at the object level for video memory while the other extension only reports total vidmem usage.

For the purposes of this specification the term vidmem refers to video memory resident on the graphics card that is directly accessible to the GPU at the highest performance level.

Requires OpenGL 2.0.

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_QUERY_RESOURCE_BUFFEROBJECT_NV New enums defined.
static int	GL_QUERY_RESOURCE_MEMTYPE_VIDMEM_NV New enums defined.
static int	GL_QUERY_RESOURCE_RENDERBUFFER_NV New enums defined.
static int	GL_QUERY_RESOURCE_SYS_RESERVED_NV New enums defined.
static int	GL_QUERY_RESOURCE_TEXTURE_NV New enums defined.
static int	GL_QUERY_RESOURCE_TYPE_VIDMEM_ALLOC_NV Accepted by the queryType parameter of QueryResourceNV.

Method Summary

Modifier and Type	Method and Description
static int	glQueryResourceNV(int queryType, int pname, int[] buffer) Array version of: QueryResourceNV
static int	glQueryResourceNV(int queryType, int pname, java.nio.IntBuffer buffer)
static int	nglQueryResourceNV(int queryType, int pname, int bufSize, long buffer) Unsafe version of: QueryResourceNV

Methods inherited from class java.lang.Object

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

Field Detail

GL_QUERY_RESOURCE_TYPE_VIDMEM_ALLOC_NV

public static final int GL_QUERY_RESOURCE_TYPE_VIDMEM_ALLOC_NV

Accepted by the queryType parameter of QueryResourceNV.

See Also:

Constant Field Values

GL_QUERY_RESOURCE_MEMTYPE_VIDMEM_NV

public static final int GL_QUERY_RESOURCE_MEMTYPE_VIDMEM_NV

New enums defined.

See Also:

Constant Field Values

GL_QUERY_RESOURCE_SYS_RESERVED_NV

public static final int GL_QUERY_RESOURCE_SYS_RESERVED_NV

New enums defined.

See Also:

Constant Field Values

GL_QUERY_RESOURCE_TEXTURE_NV

public static final int GL_QUERY_RESOURCE_TEXTURE_NV

New enums defined.

See Also:

Constant Field Values

GL_QUERY_RESOURCE_RENDERBUFFER_NV

public static final int GL_QUERY_RESOURCE_RENDERBUFFER_NV

New enums defined.

See Also:

Constant Field Values

GL_QUERY_RESOURCE_BUFFEROBJECT_NV

public static final int GL_QUERY_RESOURCE_BUFFEROBJECT_NV

New enums defined.

See Also:

Constant Field Values

Method Detail

nglQueryResourceNV

public static int nglQueryResourceNV(int queryType,
                                     int pname,
                                     int bufSize,
                                     long buffer)

Unsafe version of: QueryResourceNV

glQueryResourceNV

public static int glQueryResourceNV(int queryType,
                                    int pname,
                                    java.nio.IntBuffer buffer)

Parameters:

queryType - must be:

QUERY_RESOURCE_TYPE_VIDMEM_ALLOC_NV

glQueryResourceNV

public static int glQueryResourceNV(int queryType,
                                    int pname,
                                    int[] buffer)

Array version of: QueryResourceNV