Package org.lwjgl.opengl

Class ARBTextureStorage

java.lang.Object

org.lwjgl.opengl.ARBTextureStorage

public class ARBTextureStorage
extends java.lang.Object

Native bindings to the ARB_texture_storage extension.

The texture image specification commands in OpenGL allow each level to be separately specified with different sizes, formats, types and so on, and only imposes consistency checks at draw time. This adds overhead for implementations.

This extension provides a mechanism for specifying the entire structure of a texture in a single call, allowing certain consistency checks and memory allocations to be done up front. Once specified, the format and dimensions of the image array become immutable, to simplify completeness checks in the implementation.

When using this extension, it is no longer possible to supply texture data using TexImage*. Instead, data can be uploaded using TexSubImage*, or produced by other means (such as render-to-texture, mipmap generation, or rendering to a sibling EGLImage).

This extension has complicated interactions with other extensions. The goal of most of these interactions is to ensure that a texture is always mipmap complete (and cube complete for cubemap textures).

Requires OpenGL 1.2. Promoted to core in OpenGL 4.2.

Field Summary

Fields

Modifier and Type	Field	Description
static int	GL_TEXTURE_IMMUTABLE_FORMAT	Accepted by the value parameter of GetTexParameter{if}v.

Method Summary

Modifier and Type	Method	Description
static void	glTexStorage1D(int target, int levels, int internalformat, int width)	Simultaneously specifies storage for all levels of a one-dimensional texture.
static void	glTexStorage2D(int target, int levels, int internalformat, int width, int height)	Simultaneously specifies storage for all levels of a two-dimensional or one-dimensional array texture.
static void	glTexStorage3D(int target, int levels, int internalformat, int width, int height, int depth)	Simultaneously specifies storage for all levels of a three-dimensional, two-dimensional array or cube-map array texture.
static void	glTextureStorage1DEXT(int texture, int target, int levels, int internalformat, int width)	DSA version of TexStorage1D.
static void	glTextureStorage2DEXT(int texture, int target, int levels, int internalformat, int width, int height)	DSA version of TexStorage2D.
static void	glTextureStorage3DEXT(int texture, int target, int levels, int internalformat, int width, int height, int depth)	DSA version of TexStorage3D.

Methods inherited from class java.lang.Object

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

Field Detail

GL_TEXTURE_IMMUTABLE_FORMAT

public static final int GL_TEXTURE_IMMUTABLE_FORMAT

Accepted by the value parameter of GetTexParameter{if}v.

See Also:

Constant Field Values

Method Detail

glTexStorage1D

public static void glTexStorage1D(int target,
                                  int levels,
                                  int internalformat,
                                  int width)

Simultaneously specifies storage for all levels of a one-dimensional texture.

Parameters:

target - the target of the operation. One of:

TEXTURE_1D

PROXY_TEXTURE_1D

levels - the number of texture levels

internalformat - the sized internal format to be used to store texture image data

width - the width of the texture, in texels

glTexStorage2D

public static void glTexStorage2D(int target,
                                  int levels,
                                  int internalformat,
                                  int width,
                                  int height)

Simultaneously specifies storage for all levels of a two-dimensional or one-dimensional array texture.

Parameters:

target - the target of the operation. One of:

TEXTURE_2D	TEXTURE_1D_ARRAY	TEXTURE_RECTANGLE	TEXTURE_CUBE_MAP
PROXY_TEXTURE_2D	PROXY_TEXTURE_1D_ARRAY	PROXY_TEXTURE_RECTANGLE	PROXY_TEXTURE_CUBE_MAP

levels - the number of texture levels

internalformat - the sized internal format to be used to store texture image data

width - the width of the texture, in texels

height - the height of the texture, in texels

glTexStorage3D

public static void glTexStorage3D(int target,
                                  int levels,
                                  int internalformat,
                                  int width,
                                  int height,
                                  int depth)

Simultaneously specifies storage for all levels of a three-dimensional, two-dimensional array or cube-map array texture.

Parameters:

target - the target of the operation. One of:

TEXTURE_3D	TEXTURE_2D_ARRAY	TEXTURE_CUBE_MAP_ARRAY	PROXY_TEXTURE_3D
PROXY_TEXTURE_2D_ARRAY	PROXY_TEXTURE_CUBE_MAP_ARRAY

levels - the number of texture levels

internalformat - the sized internal format to be used to store texture image data

width - the width of the texture, in texels

height - the height of the texture, in texels

depth - the depth of the texture, in texels

glTextureStorage1DEXT

public static void glTextureStorage1DEXT(int texture,
                                         int target,
                                         int levels,
                                         int internalformat,
                                         int width)

DSA version of TexStorage1D.

Parameters:

texture - the texture object to update

target - the target of the operation. One of:

TEXTURE_1D

PROXY_TEXTURE_1D

levels - the number of texture levels

internalformat - the sized internal format to be used to store texture image data

width - the width of the texture, in texels

glTextureStorage2DEXT

public static void glTextureStorage2DEXT(int texture,
                                         int target,
                                         int levels,
                                         int internalformat,
                                         int width,
                                         int height)

DSA version of TexStorage2D.

Parameters:

texture - the texture object to update

target - the target of the operation. One of:

TEXTURE_2D	TEXTURE_1D_ARRAY	TEXTURE_RECTANGLE	TEXTURE_CUBE_MAP
PROXY_TEXTURE_2D	PROXY_TEXTURE_1D_ARRAY	PROXY_TEXTURE_RECTANGLE	PROXY_TEXTURE_CUBE_MAP

levels - the number of texture levels

internalformat - the sized internal format to be used to store texture image data

width - the width of the texture, in texels

height - the height of the texture, in texels

glTextureStorage3DEXT

public static void glTextureStorage3DEXT(int texture,
                                         int target,
                                         int levels,
                                         int internalformat,
                                         int width,
                                         int height,
                                         int depth)

DSA version of TexStorage3D.

Parameters:

texture - the texture object to update

target - the target of the operation. One of:

TEXTURE_3D	TEXTURE_2D_ARRAY	TEXTURE_CUBE_MAP_ARRAY	PROXY_TEXTURE_3D
PROXY_TEXTURE_2D_ARRAY	PROXY_TEXTURE_CUBE_MAP_ARRAY

levels - the number of texture levels

internalformat - the sized internal format to be used to store texture image data

width - the width of the texture, in texels

height - the height of the texture, in texels

depth - the depth of the texture, in texels