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

```
public class ARBShaderSubroutine
extends java.lang.Object
```
Native bindings to the ARB_shader_subroutine extension.
This extension adds support to shaders for "indirect subroutine calls", where a single shader can include many subroutines and dynamically select through the API which subroutine is called from each call site. Switching subroutines dynamically in this fashion can avoid the cost of recompiling and managing multiple shaders, while still retaining most of the performance of specialized shaders.

Requires ARB_gpu_shader5. Promoted to core in OpenGL 4.0.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`GL_ACTIVE_SUBROUTINE_MAX_LENGTH GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH GL_ACTIVE_SUBROUTINE_UNIFORMS GL_ACTIVE_SUBROUTINES` Accepted by the `pname` parameter of GetProgramStageiv.
`static int`	`GL_COMPATIBLE_SUBROUTINES` Accepted by the `pname` parameter of GetActiveSubroutineUniformiv.
`static int`	`GL_MAX_SUBROUTINE_UNIFORM_LOCATIONS GL_MAX_SUBROUTINES` Accepted by the `pname` parameter of GetBooleanv, GetIntegerv, GetFloatv, GetDoublev, and GetInteger64v.
`static int`	`GL_NUM_COMPATIBLE_SUBROUTINES` Accepted by the `pname` parameter of GetActiveSubroutineUniformiv.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static java.lang.String`	`glGetActiveSubroutineName(int program, int shadertype, int index)` Queries the name of an active shader subroutine.
`static java.lang.String`	`glGetActiveSubroutineName(int program, int shadertype, int index, int bufsize)` Queries the name of an active shader subroutine.
`static void`	`glGetActiveSubroutineName(int program, int shadertype, int index, int[] length, java.nio.ByteBuffer name)` Array version of: `GetActiveSubroutineName`
`static void`	`glGetActiveSubroutineName(int program, int shadertype, int index, java.nio.IntBuffer length, java.nio.ByteBuffer name)` Queries the name of an active shader subroutine.
`static int`	`glGetActiveSubroutineUniformi(int program, int shadertype, int index, int pname)` Queries a property of an active shader subroutine uniform.
`static void`	`glGetActiveSubroutineUniformiv(int program, int shadertype, int index, int pname, int[] values)` Array version of: `GetActiveSubroutineUniformiv`
`static void`	`glGetActiveSubroutineUniformiv(int program, int shadertype, int index, int pname, java.nio.IntBuffer values)` Queries a property of an active shader subroutine uniform.
`static java.lang.String`	`glGetActiveSubroutineUniformName(int program, int shadertype, int index)` Queries the name of an active shader subroutine uniform.
`static java.lang.String`	`glGetActiveSubroutineUniformName(int program, int shadertype, int index, int bufsize)` Queries the name of an active shader subroutine uniform.
`static void`	`glGetActiveSubroutineUniformName(int program, int shadertype, int index, int[] length, java.nio.ByteBuffer name)` Array version of: `GetActiveSubroutineUniformName`
`static void`	`glGetActiveSubroutineUniformName(int program, int shadertype, int index, java.nio.IntBuffer length, java.nio.ByteBuffer name)` Queries the name of an active shader subroutine uniform.
`static int`	`glGetProgramStagei(int program, int shadertype, int pname)` Retrieves properties of a program object corresponding to a specified shader stage.
`static void`	`glGetProgramStageiv(int program, int shadertype, int pname, int[] values)` Array version of: `GetProgramStageiv`
`static void`	`glGetProgramStageiv(int program, int shadertype, int pname, java.nio.IntBuffer values)` Retrieves properties of a program object corresponding to a specified shader stage.
`static int`	`glGetSubroutineIndex(int program, int shadertype, java.nio.ByteBuffer name)` Retrieves the index of a subroutine function of a given shader stage within a program.
`static int`	`glGetSubroutineIndex(int program, int shadertype, java.lang.CharSequence name)` Retrieves the index of a subroutine function of a given shader stage within a program.
`static int`	`glGetSubroutineUniformLocation(int program, int shadertype, java.nio.ByteBuffer name)` Retrieves the location of a subroutine uniform of a given shader stage within a program.
`static int`	`glGetSubroutineUniformLocation(int program, int shadertype, java.lang.CharSequence name)` Retrieves the location of a subroutine uniform of a given shader stage within a program.
`static int`	`glGetUniformSubroutineui(int shadertype, int location)` Retrieves the value of a subroutine uniform of a given shader stage of the current program.
`static void`	`glGetUniformSubroutineuiv(int shadertype, int location, int[] params)` Array version of: `GetUniformSubroutineuiv`
`static void`	`glGetUniformSubroutineuiv(int shadertype, int location, java.nio.IntBuffer params)` Retrieves the value of a subroutine uniform of a given shader stage of the current program.
`static void`	`glUniformSubroutinesui(int shadertype, int index)` Loads active subroutine uniforms.
`static void`	`glUniformSubroutinesuiv(int shadertype, int[] indices)` Array version of: `UniformSubroutinesuiv`
`static void`	`glUniformSubroutinesuiv(int shadertype, java.nio.IntBuffer indices)` Loads active subroutine uniforms.

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

- Field Detail
  - GL_ACTIVE_SUBROUTINES, GL_ACTIVE_SUBROUTINE_UNIFORMS, GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS, GL_ACTIVE_SUBROUTINE_MAX_LENGTH, GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
    
    Accepted by the pname parameter of GetProgramStageiv.
  - GL_MAX_SUBROUTINES, GL_MAX_SUBROUTINE_UNIFORM_LOCATIONS
    
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, GetDoublev, and GetInteger64v.
  - GL_NUM_COMPATIBLE_SUBROUTINES, GL_COMPATIBLE_SUBROUTINES
    
    Accepted by the pname parameter of GetActiveSubroutineUniformiv.
- Method Detail
  - glGetSubroutineUniformLocation
```
public static int glGetSubroutineUniformLocation(int program,
                                                 int shadertype,
                                                 java.nio.ByteBuffer name)

public static int glGetSubroutineUniformLocation(int program,
                                                 int shadertype,
                                                 java.lang.CharSequence name)
```
    Retrieves the location of a subroutine uniform of a given shader stage within a program.
    
    Parameters:
    
    program - the name of the program containing shader stage
    
    shadertype - the shader stage from which to query for subroutine uniform index. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    name - the name of the subroutine uniform whose index to query.
  - glGetSubroutineIndex
```
public static int glGetSubroutineIndex(int program,
                                       int shadertype,
                                       java.nio.ByteBuffer name)

public static int glGetSubroutineIndex(int program,
                                       int shadertype,
                                       java.lang.CharSequence name)
```
    Retrieves the index of a subroutine function of a given shader stage within a program.
    
    Parameters:
    
    program - the name of the program containing shader stage
    
    shadertype - the shader stage from which to query for subroutine function index. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    name - the name of the subroutine function whose index to query
  - glGetActiveSubroutineUniformiv
```
public static void glGetActiveSubroutineUniformiv(int program,
                                                  int shadertype,
                                                  int index,
                                                  int pname,
                                                  java.nio.IntBuffer values)
```
    Queries a property of an active shader subroutine uniform.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query for the subroutine parameter. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
    
    pname - the parameter of the shader subroutine uniform to query. One of:
    NUM_COMPATIBLE_SUBROUTINES COMPATIBLE_SUBROUTINES UNIFORM_SIZE UNIFORM_NAME_LENGTH
    
    values - the address of a buffer into which the queried value or values will be placed
  - glGetActiveSubroutineUniformi
```
public static int glGetActiveSubroutineUniformi(int program,
                                                int shadertype,
                                                int index,
                                                int pname)
```
    Queries a property of an active shader subroutine uniform.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query for the subroutine parameter. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
    
    pname - the parameter of the shader subroutine uniform to query. One of:
    NUM_COMPATIBLE_SUBROUTINES COMPATIBLE_SUBROUTINES UNIFORM_SIZE UNIFORM_NAME_LENGTH
  - glGetActiveSubroutineUniformName
```
public static void glGetActiveSubroutineUniformName(int program,
                                                    int shadertype,
                                                    int index,
                                                    java.nio.IntBuffer length,
                                                    java.nio.ByteBuffer name)
```
    Queries the name of an active shader subroutine uniform.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query for the subroutine parameter. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
    
    length - the address of a variable into which is written the number of characters copied into name
    
    name - the address of a buffer that will receive the name of the specified shader subroutine uniform
  - glGetActiveSubroutineUniformName
```
public static java.lang.String glGetActiveSubroutineUniformName(int program,
                                                                int shadertype,
                                                                int index,
                                                                int bufsize)
```
    Queries the name of an active shader subroutine uniform.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query for the subroutine parameter. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
    
    bufsize - the size of the buffer whose address is given in name
  - glGetActiveSubroutineUniformName
```
public static java.lang.String glGetActiveSubroutineUniformName(int program,
                                                                int shadertype,
                                                                int index)
```
    Queries the name of an active shader subroutine uniform.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query for the subroutine parameter. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
  - glGetActiveSubroutineName
```
public static void glGetActiveSubroutineName(int program,
                                             int shadertype,
                                             int index,
                                             java.nio.IntBuffer length,
                                             java.nio.ByteBuffer name)
```
    Queries the name of an active shader subroutine.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query the subroutine name. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
    
    length - a variable which is to receive the length of the shader subroutine uniform name
    
    name - an array into which the name of the shader subroutine uniform will be written
  - glGetActiveSubroutineName
```
public static java.lang.String glGetActiveSubroutineName(int program,
                                                         int shadertype,
                                                         int index,
                                                         int bufsize)
```
    Queries the name of an active shader subroutine.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query the subroutine name. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
    
    bufsize - the size of the buffer whose address is given in name
  - glGetActiveSubroutineName
```
public static java.lang.String glGetActiveSubroutineName(int program,
                                                         int shadertype,
                                                         int index)
```
    Queries the name of an active shader subroutine.
    
    Parameters:
    
    program - the name of the program containing the subroutine
    
    shadertype - the shader stage from which to query the subroutine name. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    index - the index of the shader subroutine uniform
  - glUniformSubroutinesuiv
```
public static void glUniformSubroutinesuiv(int shadertype,
                                           java.nio.IntBuffer indices)
```
    Loads active subroutine uniforms.
    
    Parameters:
    
    shadertype - the shader stage to update. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    indices - an array holding the indices to load into the shader subroutine variables
  - glUniformSubroutinesui
```
public static void glUniformSubroutinesui(int shadertype,
                                          int index)
```
    Loads active subroutine uniforms.
    
    Parameters:
    
    shadertype - the shader stage to update. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
  - glGetUniformSubroutineuiv
```
public static void glGetUniformSubroutineuiv(int shadertype,
                                             int location,
                                             java.nio.IntBuffer params)
```
    Retrieves the value of a subroutine uniform of a given shader stage of the current program.
    
    Parameters:
    
    shadertype - the shader stage from which to query for subroutine uniform index. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    location - the location of the subroutine uniform
    
    params - a variable to receive the value or values of the subroutine uniform
  - glGetUniformSubroutineui
```
public static int glGetUniformSubroutineui(int shadertype,
                                           int location)
```
    Retrieves the value of a subroutine uniform of a given shader stage of the current program.
    
    Parameters:
    
    shadertype - the shader stage from which to query for subroutine uniform index. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    location - the location of the subroutine uniform
  - glGetProgramStageiv
```
public static void glGetProgramStageiv(int program,
                                       int shadertype,
                                       int pname,
                                       java.nio.IntBuffer values)
```
    Retrieves properties of a program object corresponding to a specified shader stage.
    
    Parameters:
    
    program - the name of the program containing shader stage
    
    shadertype - the shader stage from which to query for the subroutine parameter. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    pname - the parameter of the shader to query. One of:
    ACTIVE_SUBROUTINES ACTIVE_SUBROUTINE_UNIFORMS
    ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS ACTIVE_SUBROUTINE_MAX_LENGTH
    ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
    
    values - a variable into which the queried value or values will be placed
  - glGetProgramStagei
```
public static int glGetProgramStagei(int program,
                                     int shadertype,
                                     int pname)
```
    Retrieves properties of a program object corresponding to a specified shader stage.
    
    Parameters:
    
    program - the name of the program containing shader stage
    
    shadertype - the shader stage from which to query for the subroutine parameter. One of:
    VERTEX_SHADER FRAGMENT_SHADER GEOMETRY_SHADER TESS_CONTROL_SHADER
    TESS_EVALUATION_SHADER
    
    pname - the parameter of the shader to query. One of:
    ACTIVE_SUBROUTINES ACTIVE_SUBROUTINE_UNIFORMS
    ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS ACTIVE_SUBROUTINE_MAX_LENGTH
    ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
  - glGetActiveSubroutineUniformiv
```
public static void glGetActiveSubroutineUniformiv(int program,
                                                  int shadertype,
                                                  int index,
                                                  int pname,
                                                  int[] values)
```
    Array version of: GetActiveSubroutineUniformiv
  - glGetActiveSubroutineUniformName
```
public static void glGetActiveSubroutineUniformName(int program,
                                                    int shadertype,
                                                    int index,
                                                    int[] length,
                                                    java.nio.ByteBuffer name)
```
    Array version of: GetActiveSubroutineUniformName
  - glGetActiveSubroutineName
```
public static void glGetActiveSubroutineName(int program,
                                             int shadertype,
                                             int index,
                                             int[] length,
                                             java.nio.ByteBuffer name)
```
    Array version of: GetActiveSubroutineName
  - glUniformSubroutinesuiv
```
public static void glUniformSubroutinesuiv(int shadertype,
                                           int[] indices)
```
    Array version of: UniformSubroutinesuiv
  - glGetUniformSubroutineuiv
```
public static void glGetUniformSubroutineuiv(int shadertype,
                                             int location,
                                             int[] params)
```
    Array version of: GetUniformSubroutineuiv
  - glGetProgramStageiv
```
public static void glGetProgramStageiv(int program,
                                       int shadertype,
                                       int pname,
                                       int[] values)
```
    Array version of: GetProgramStageiv

`VERTEX_SHADER`	`FRAGMENT_SHADER`	`GEOMETRY_SHADER`	`TESS_CONTROL_SHADER`
`TESS_EVALUATION_SHADER`

`ACTIVE_SUBROUTINES`	`ACTIVE_SUBROUTINE_UNIFORMS`
`ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS`	`ACTIVE_SUBROUTINE_MAX_LENGTH`
`ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH`

Class ARBShaderSubroutine

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

GL_ACTIVE_SUBROUTINES, GL_ACTIVE_SUBROUTINE_UNIFORMS, GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS, GL_ACTIVE_SUBROUTINE_MAX_LENGTH, GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH

GL_MAX_SUBROUTINES, GL_MAX_SUBROUTINE_UNIFORM_LOCATIONS

GL_NUM_COMPATIBLE_SUBROUTINES, GL_COMPATIBLE_SUBROUTINES

Method Detail

glGetSubroutineUniformLocation

glGetSubroutineIndex

glGetActiveSubroutineUniformiv

glGetActiveSubroutineUniformi

glGetActiveSubroutineUniformName

glGetActiveSubroutineUniformName

glGetActiveSubroutineUniformName

glGetActiveSubroutineName

glGetActiveSubroutineName

glGetActiveSubroutineName

glUniformSubroutinesuiv

glUniformSubroutinesui

glGetUniformSubroutineuiv

glGetUniformSubroutineui

glGetProgramStageiv

glGetProgramStagei

glGetActiveSubroutineUniformiv

glGetActiveSubroutineUniformName

glGetActiveSubroutineName

glUniformSubroutinesuiv

glGetUniformSubroutineuiv

glGetProgramStageiv