java.lang.Object
- org.lwjgl.opengl.GL21

```
public class GL21
extends java.lang.Object
```
The core OpenGL 2.1 functionality. OpenGL 2.1 implementations must support at least revision 1.20 of the OpenGL Shading Language.
Extensions promoted to core in this release:
- ARB_pixel_buffer_object
- EXT_texture_sRGB

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`GL_COMPRESSED_SLUMINANCE GL_COMPRESSED_SLUMINANCE_ALPHA GL_COMPRESSED_SRGB GL_COMPRESSED_SRGB_ALPHA` Accepted by the `internalformat` parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
`static int`	`GL_CURRENT_RASTER_SECONDARY_COLOR` Accepted by the `pname` parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
`static int`	`GL_FLOAT_MAT2x3 GL_FLOAT_MAT2x4 GL_FLOAT_MAT3x2 GL_FLOAT_MAT3x4 GL_FLOAT_MAT4x2 GL_FLOAT_MAT4x3` Returned by the `type` parameter of GetActiveUniform.
`static int`	`GL_PIXEL_PACK_BUFFER` Accepted by the `target` parameters of BindBuffer, BufferData, BufferSubData, MapBuffer, UnmapBuffer, GetBufferSubData, GetBufferParameteriv, and GetBufferPointerv.
`static int`	`GL_PIXEL_PACK_BUFFER_BINDING` Accepted by the `pname` parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
`static int`	`GL_PIXEL_UNPACK_BUFFER` Accepted by the `target` parameters of BindBuffer, BufferData, BufferSubData, MapBuffer, UnmapBuffer, GetBufferSubData, GetBufferParameteriv, and GetBufferPointerv.
`static int`	`GL_PIXEL_UNPACK_BUFFER_BINDING` Accepted by the `pname` parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
`static int`	`GL_SLUMINANCE GL_SLUMINANCE_ALPHA GL_SLUMINANCE8 GL_SLUMINANCE8_ALPHA8 GL_SRGB GL_SRGB_ALPHA GL_SRGB8 GL_SRGB8_ALPHA8` Accepted by the `internalformat` parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`glUniformMatrix2x3fv(int location, boolean transpose, float[] value)` OpenGL SDK Reference
`static void`	`glUniformMatrix2x3fv(int location, boolean transpose, java.nio.FloatBuffer value)` OpenGL SDK Reference
`static void`	`glUniformMatrix2x4fv(int location, boolean transpose, float[] value)` OpenGL SDK Reference
`static void`	`glUniformMatrix2x4fv(int location, boolean transpose, java.nio.FloatBuffer value)` OpenGL SDK Reference
`static void`	`glUniformMatrix3x2fv(int location, boolean transpose, float[] value)` OpenGL SDK Reference
`static void`	`glUniformMatrix3x2fv(int location, boolean transpose, java.nio.FloatBuffer value)` OpenGL SDK Reference
`static void`	`glUniformMatrix3x4fv(int location, boolean transpose, float[] value)` OpenGL SDK Reference
`static void`	`glUniformMatrix3x4fv(int location, boolean transpose, java.nio.FloatBuffer value)` OpenGL SDK Reference
`static void`	`glUniformMatrix4x2fv(int location, boolean transpose, float[] value)` OpenGL SDK Reference
`static void`	`glUniformMatrix4x2fv(int location, boolean transpose, java.nio.FloatBuffer value)` OpenGL SDK Reference
`static void`	`glUniformMatrix4x3fv(int location, boolean transpose, float[] value)` OpenGL SDK Reference
`static void`	`glUniformMatrix4x3fv(int location, boolean transpose, java.nio.FloatBuffer value)` OpenGL SDK Reference

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - GL_CURRENT_RASTER_SECONDARY_COLOR
```
public static final int GL_CURRENT_RASTER_SECONDARY_COLOR
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
    
    See Also:
    
    Constant Field Values
  - GL_FLOAT_MAT2x3
```
public static final int GL_FLOAT_MAT2x3
```
    Returned by the type parameter of GetActiveUniform.
    
    See Also:
    
    Constant Field Values
  - GL_FLOAT_MAT2x4
```
public static final int GL_FLOAT_MAT2x4
```
    Returned by the type parameter of GetActiveUniform.
    
    See Also:
    
    Constant Field Values
  - GL_FLOAT_MAT3x2
```
public static final int GL_FLOAT_MAT3x2
```
    Returned by the type parameter of GetActiveUniform.
    
    See Also:
    
    Constant Field Values
  - GL_FLOAT_MAT3x4
```
public static final int GL_FLOAT_MAT3x4
```
    Returned by the type parameter of GetActiveUniform.
    
    See Also:
    
    Constant Field Values
  - GL_FLOAT_MAT4x2
```
public static final int GL_FLOAT_MAT4x2
```
    Returned by the type parameter of GetActiveUniform.
    
    See Also:
    
    Constant Field Values
  - GL_FLOAT_MAT4x3
```
public static final int GL_FLOAT_MAT4x3
```
    Returned by the type parameter of GetActiveUniform.
    
    See Also:
    
    Constant Field Values
  - GL_PIXEL_PACK_BUFFER
```
public static final int GL_PIXEL_PACK_BUFFER
```
    Accepted by the target parameters of BindBuffer, BufferData, BufferSubData, MapBuffer, UnmapBuffer, GetBufferSubData, GetBufferParameteriv, and GetBufferPointerv.
    
    See Also:
    
    Constant Field Values
  - GL_PIXEL_UNPACK_BUFFER
```
public static final int GL_PIXEL_UNPACK_BUFFER
```
    Accepted by the target parameters of BindBuffer, BufferData, BufferSubData, MapBuffer, UnmapBuffer, GetBufferSubData, GetBufferParameteriv, and GetBufferPointerv.
    
    See Also:
    
    Constant Field Values
  - GL_PIXEL_PACK_BUFFER_BINDING
```
public static final int GL_PIXEL_PACK_BUFFER_BINDING
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
    
    See Also:
    
    Constant Field Values
  - GL_PIXEL_UNPACK_BUFFER_BINDING
```
public static final int GL_PIXEL_UNPACK_BUFFER_BINDING
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
    
    See Also:
    
    Constant Field Values
  - GL_SRGB
```
public static final int GL_SRGB
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_SRGB8
```
public static final int GL_SRGB8
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_SRGB_ALPHA
```
public static final int GL_SRGB_ALPHA
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_SRGB8_ALPHA8
```
public static final int GL_SRGB8_ALPHA8
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_SLUMINANCE_ALPHA
```
public static final int GL_SLUMINANCE_ALPHA
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_SLUMINANCE8_ALPHA8
```
public static final int GL_SLUMINANCE8_ALPHA8
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_SLUMINANCE
```
public static final int GL_SLUMINANCE
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_SLUMINANCE8
```
public static final int GL_SLUMINANCE8
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_COMPRESSED_SRGB
```
public static final int GL_COMPRESSED_SRGB
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_COMPRESSED_SRGB_ALPHA
```
public static final int GL_COMPRESSED_SRGB_ALPHA
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_COMPRESSED_SLUMINANCE
```
public static final int GL_COMPRESSED_SLUMINANCE
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
  - GL_COMPRESSED_SLUMINANCE_ALPHA
```
public static final int GL_COMPRESSED_SLUMINANCE_ALPHA
```
    Accepted by the internalformat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, CopyTexImage2D.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - glUniformMatrix2x3fv
```
public static void glUniformMatrix2x3fv(int location,
                                        boolean transpose,
                                        java.nio.FloatBuffer value)
```
    OpenGL SDK Reference
    Specifies the value of a single mat2x3 uniform variable or a mat2x3 uniform variable array for the current program object.
    
    Parameters:
    
    location - the location of the uniform variable to be modified
    
    transpose - whether to transpose the matrix as the values are loaded into the uniform variable
    
    value - a pointer to an array of count values that will be used to update the specified uniform variable
  - glUniformMatrix3x2fv
```
public static void glUniformMatrix3x2fv(int location,
                                        boolean transpose,
                                        java.nio.FloatBuffer value)
```
    OpenGL SDK Reference
    Specifies the value of a single mat3x2 uniform variable or a mat3x2 uniform variable array for the current program object.
    
    Parameters:
    
    location - the location of the uniform variable to be modified
    
    transpose - whether to transpose the matrix as the values are loaded into the uniform variable
    
    value - a pointer to an array of count values that will be used to update the specified uniform variable
  - glUniformMatrix2x4fv
```
public static void glUniformMatrix2x4fv(int location,
                                        boolean transpose,
                                        java.nio.FloatBuffer value)
```
    OpenGL SDK Reference
    Specifies the value of a single mat2x4 uniform variable or a mat2x4 uniform variable array for the current program object.
    
    Parameters:
    
    location - the location of the uniform variable to be modified
    
    transpose - whether to transpose the matrix as the values are loaded into the uniform variable
    
    value - a pointer to an array of count values that will be used to update the specified uniform variable
  - glUniformMatrix4x2fv
```
public static void glUniformMatrix4x2fv(int location,
                                        boolean transpose,
                                        java.nio.FloatBuffer value)
```
    OpenGL SDK Reference
    Specifies the value of a single mat4x2 uniform variable or a mat4x2 uniform variable array for the current program object.
    
    Parameters:
    
    location - the location of the uniform variable to be modified
    
    transpose - whether to transpose the matrix as the values are loaded into the uniform variable
    
    value - a pointer to an array of count values that will be used to update the specified uniform variable
  - glUniformMatrix3x4fv
```
public static void glUniformMatrix3x4fv(int location,
                                        boolean transpose,
                                        java.nio.FloatBuffer value)
```
    OpenGL SDK Reference
    Specifies the value of a single mat3x4 uniform variable or a mat3x4 uniform variable array for the current program object.
    
    Parameters:
    
    location - the location of the uniform variable to be modified
    
    transpose - whether to transpose the matrix as the values are loaded into the uniform variable
    
    value - a pointer to an array of count values that will be used to update the specified uniform variable
  - glUniformMatrix4x3fv
```
public static void glUniformMatrix4x3fv(int location,
                                        boolean transpose,
                                        java.nio.FloatBuffer value)
```
    OpenGL SDK Reference
    Specifies the value of a single mat4x3 uniform variable or a mat4x3 uniform variable array for the current program object.
    
    Parameters:
    
    location - the location of the uniform variable to be modified
    
    transpose - whether to transpose the matrix as the values are loaded into the uniform variable
    
    value - a pointer to an array of count values that will be used to update the specified uniform variable
  - glUniformMatrix2x3fv
```
public static void glUniformMatrix2x3fv(int location,
                                        boolean transpose,
                                        float[] value)
```
    OpenGL SDK Reference
    Array version of: UniformMatrix2x3fv
  - glUniformMatrix3x2fv
```
public static void glUniformMatrix3x2fv(int location,
                                        boolean transpose,
                                        float[] value)
```
    OpenGL SDK Reference
    Array version of: UniformMatrix3x2fv
  - glUniformMatrix2x4fv
```
public static void glUniformMatrix2x4fv(int location,
                                        boolean transpose,
                                        float[] value)
```
    OpenGL SDK Reference
    Array version of: UniformMatrix2x4fv
  - glUniformMatrix4x2fv
```
public static void glUniformMatrix4x2fv(int location,
                                        boolean transpose,
                                        float[] value)
```
    OpenGL SDK Reference
    Array version of: UniformMatrix4x2fv
  - glUniformMatrix3x4fv
```
public static void glUniformMatrix3x4fv(int location,
                                        boolean transpose,
                                        float[] value)
```
    OpenGL SDK Reference
    Array version of: UniformMatrix3x4fv
  - glUniformMatrix4x3fv
```
public static void glUniformMatrix4x3fv(int location,
                                        boolean transpose,
                                        float[] value)
```
    OpenGL SDK Reference
    Array version of: UniformMatrix4x3fv

Class GL21

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

GL_CURRENT_RASTER_SECONDARY_COLOR

GL_FLOAT_MAT2x3

GL_FLOAT_MAT2x4

GL_FLOAT_MAT3x2

GL_FLOAT_MAT3x4

GL_FLOAT_MAT4x2

GL_FLOAT_MAT4x3

GL_PIXEL_PACK_BUFFER

GL_PIXEL_UNPACK_BUFFER

GL_PIXEL_PACK_BUFFER_BINDING

GL_PIXEL_UNPACK_BUFFER_BINDING

GL_SRGB

GL_SRGB8

GL_SRGB_ALPHA

GL_SRGB8_ALPHA8

GL_SLUMINANCE_ALPHA

GL_SLUMINANCE8_ALPHA8

GL_SLUMINANCE

GL_SLUMINANCE8

GL_COMPRESSED_SRGB

GL_COMPRESSED_SRGB_ALPHA

GL_COMPRESSED_SLUMINANCE

GL_COMPRESSED_SLUMINANCE_ALPHA

Method Detail

glUniformMatrix2x3fv

glUniformMatrix3x2fv

glUniformMatrix2x4fv

glUniformMatrix4x2fv

glUniformMatrix3x4fv

glUniformMatrix4x3fv

glUniformMatrix2x3fv

glUniformMatrix3x2fv

glUniformMatrix2x4fv

glUniformMatrix4x2fv

glUniformMatrix3x4fv

glUniformMatrix4x3fv