Package org.lwjgl.opengl

Class 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.
        See Also:
        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