org.lwjgl.opengl

Class ARBTextureRectangle

java.lang.Object

org.lwjgl.opengl.ARBTextureRectangle

public final class ARBTextureRectangle
extends java.lang.Object

Native bindings to the ARB_texture_rectangle extension.

OpenGL texturing is limited to images with power-of-two dimensions and an optional 1-texel border. The ARB_texture_rectangle extension adds a new texture target that supports 2D textures without requiring power-of-two dimensions.

Non-power-of-two sized (NPOTS) textures are useful for storing video images that do not have power-of-two sized (POTS). Re-sampling artifacts are avoided and less texture memory may be required by using non-power-of-two sized textures. Non-power-of-two sized textures are also useful for shadow maps and window-space texturing.

However, non-power-of-two sized textures have limitations that do not apply to power-of-two sized textures. NPOTS textures may not use mipmap filtering; POTS textures support both mipmapped and non-mipmapped filtering. NPOTS textures support only the CLAMP, CLAMP_TO_EDGE, and CLAMP_TO_BORDER wrap modes; POTS textures support CLAMP_TO_EDGE, REPEAT, CLAMP, MIRRORED_REPEAT, and CLAMP_TO_BORDER (and GL_MIRROR_CLAMP_ATI and GL_MIRROR_CLAMP_TO_EDGE_ATI if ATI_texture_mirror_once is supported). NPOTS textures do not support an optional 1-texel border; POTS textures do support an optional 1-texel border.

NPOTS textures are accessed by dimension-dependent (aka non-normalized) texture coordinates. So instead of thinking of the texture image lying in a [0..1]x[0..1] range, the NPOTS texture image lies in a [0..w]x[0..h] range.

This extension adds a new texture target and related state (proxy, binding, max texture size).

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB Accepted by the pname parameter of GetBooleanv, GetDoublev, GetIntegerv and GetFloatv.
static int	GL_PROXY_TEXTURE_RECTANGLE_ARB Accepted by the target parameter of GetTexLevelParameteriv, GetTexLevelParameterfv, GetTexParameteriv and TexImage2D.
static int	GL_SAMPLER_2D_RECT_ARB TEXTURE_RECTANGLE_ARB Returned by type parameter of GetActiveUniform when the location index for program object program is of type sampler2DRect.
static int	GL_SAMPLER_2D_RECT_SHADOW_ARB Returned by type parameter of GetActiveUniform when the location index for program object program is of type sampler2DRectShadow.
static int	GL_TEXTURE_BINDING_RECTANGLE_ARB Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv and GetDoublev.
static int	GL_TEXTURE_RECTANGLE_ARB Accepted by the cap parameter of Enable, Disable and IsEnabled; by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv and GetDoublev; and by the target parameter of BindTexture, GetTexParameterfv, GetTexParameteriv, TexParameterf, TexParameteri, TexParameterfv and TexParameteriv.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

GL_TEXTURE_RECTANGLE_ARB

public static final int GL_TEXTURE_RECTANGLE_ARB

Accepted by the cap parameter of Enable, Disable and IsEnabled; by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv and GetDoublev; and by the target parameter of BindTexture, GetTexParameterfv, GetTexParameteriv, TexParameterf, TexParameteri, TexParameterfv and TexParameteriv.

See Also:

Constant Field Values

GL_TEXTURE_BINDING_RECTANGLE_ARB

public static final int GL_TEXTURE_BINDING_RECTANGLE_ARB

Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv and GetDoublev.

See Also:

Constant Field Values

GL_PROXY_TEXTURE_RECTANGLE_ARB

public static final int GL_PROXY_TEXTURE_RECTANGLE_ARB

Accepted by the target parameter of GetTexLevelParameteriv, GetTexLevelParameterfv, GetTexParameteriv and TexImage2D.

See Also:

Constant Field Values

GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB

public static final int GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB

Accepted by the pname parameter of GetBooleanv, GetDoublev, GetIntegerv and GetFloatv.

See Also:

Constant Field Values

GL_SAMPLER_2D_RECT_ARB

public static final int GL_SAMPLER_2D_RECT_ARB

TEXTURE_RECTANGLE_ARB Returned by type parameter of GetActiveUniform when the location index for program object program is of type sampler2DRect.

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Constant Field Values

GL_SAMPLER_2D_RECT_SHADOW_ARB

public static final int GL_SAMPLER_2D_RECT_SHADOW_ARB

Returned by type parameter of GetActiveUniform when the location index for program object program is of type sampler2DRectShadow.

See Also:

Constant Field Values