GLInstancedRenderable

java.lang.Object
- com.atakmap.android.vehicle.model.opengl.GLInstancedRenderable

Direct Known Subclasses:

GLInstancedMesh, GLInstancedPolyline
```
public abstract class GLInstancedRenderable
extends java.lang.Object
```
A single renderable used for multiple instances of a map item

Field Summary

Fields
Modifier and Type	Field and Description
`protected java.util.List<GLInstanceData>`	`_drawInstances`
`protected int`	`_drawVersion`
`protected int`	`_instanceLimit`
`protected LocalCoordinateSystem`	`_lcs`
`protected java.nio.FloatBuffer`	`_mxBuffer`
`protected int[]`	`_mxBufferID`
`protected long`	`_mxBufferPtr`
`protected int`	`_mxBufferSize`
`protected java.lang.String`	`_name`
`protected java.util.List<GLInstanceData>`	`_pendingInstances`
`protected java.lang.Integer`	`_programID`
`protected boolean`	`_released`
`protected int`	`_renderPass`
`protected int[]`	`_vao`
`protected static int`	`SIZE_BUF`
`protected static int`	`SIZE_MAT4`
`protected static int`	`SIZE_VEC2`
`protected static int`	`SIZE_VEC3`
`protected static int`	`SIZE_VEC4`

Constructor Summary

Constructors
Constructor and Description

GLInstancedRenderable(java.lang.String name, int renderPass)

Constructors
Constructor and Description
`GLInstancedRenderable(java.lang.String name, int renderPass)`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addInstance(GLInstanceData instance)` Add an instance of this mesh to be drawn
`protected abstract java.lang.Integer`	`compileShader()` Compile the main program shader
`protected static int`	`compileShader(java.lang.String vtxShader, java.lang.String fragShader)` Compile the main program shader
`protected static java.nio.FloatBuffer`	`createFloatBuffer(int size)` Create a simple float buffer in native memory
`protected static int[]`	`deleteBuffers(java.nio.Buffer buffer, int[] bufIndex)` Delete a buffer and return null so we can nullify the reference in 1 line
`protected static int[]`	`deleteBuffers(int[] bufIndex)`
`void`	`draw(GLMapView view, int renderPass)`
`protected abstract void`	`drawInstanced(GLMapView view)` Perform instanced draw calls here At this point the matrices have been set up
`protected void`	`expandInstanceBuffers()`
`void`	`flagRelease()`
`protected int`	`getNumInstances()` Get the number of instances to draw Use this for your glDrawArraysInstanced call
`protected abstract int`	`getPositionPointer()` Get the layout index of the location pointer (the matrix used to position the renderable)
`int`	`getRenderPass()`
`void`	`release()`
`void`	`reset()` Reset instance data
`protected static int[]`	`setupInstanceBuffer(java.nio.Buffer buffer, int size)` Setup an instance buffer
`protected static void`	`setupInstancePointer(int idx, int size, int stride, int offset)` Setup instance pointer
`protected abstract void`	`setupVertexBuffers()` Setup vertex buffers
`protected void`	`updateMatrices(GLMapView view)`

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

Field Detail

SIZE_BUF
```
protected static final int SIZE_BUF
```
See Also:

Constant Field Values

SIZE_VEC2
```
protected static final int SIZE_VEC2
```
See Also:

Constant Field Values

SIZE_VEC3
```
protected static final int SIZE_VEC3
```
See Also:

Constant Field Values

SIZE_VEC4
```
protected static final int SIZE_VEC4
```
See Also:

Constant Field Values

SIZE_MAT4
```
protected static final int SIZE_MAT4
```
See Also:

Constant Field Values

_name
```
protected final java.lang.String _name
```

_renderPass
```
protected final int _renderPass
```

_programID
```
protected java.lang.Integer _programID
```

_drawVersion
```
protected int _drawVersion
```

_drawInstances

protected final java.util.List<GLInstanceData> _drawInstances

_pendingInstances

protected final java.util.List<GLInstanceData> _pendingInstances

_vao
```
protected int[] _vao
```

_instanceLimit
```
protected int _instanceLimit
```

_lcs
```
protected LocalCoordinateSystem _lcs
```

_released
```
protected boolean _released
```

_mxBufferID
```
protected int[] _mxBufferID
```

_mxBufferSize
```
protected int _mxBufferSize
```

_mxBufferPtr
```
protected long _mxBufferPtr
```

_mxBuffer

protected java.nio.FloatBuffer _mxBuffer

Constructor Detail

GLInstancedRenderable

public GLInstancedRenderable(java.lang.String name,
                             int renderPass)

Method Detail
- getRenderPass
```
public int getRenderPass()
```
- reset
```
public void reset()
```
  Reset instance data
- addInstance
```
public void addInstance(GLInstanceData instance)
```
  Add an instance of this mesh to be drawn
  
  Parameters:
  
  instance - Instance data
- getNumInstances
```
protected int getNumInstances()
```
  Get the number of instances to draw Use this for your glDrawArraysInstanced call
  
  Returns:
  
  Number of instances to draw
- compileShader
```
protected abstract java.lang.Integer compileShader()
```
  Compile the main program shader
- draw
```
public void draw(GLMapView view,
                 int renderPass)
```
- setupVertexBuffers
```
protected abstract void setupVertexBuffers()
```
  Setup vertex buffers
- drawInstanced
```
protected abstract void drawInstanced(GLMapView view)
```
  Perform instanced draw calls here At this point the matrices have been set up
  
  Parameters:
  
  view - Map view
- getPositionPointer
```
protected abstract int getPositionPointer()
```
  Get the layout index of the location pointer (the matrix used to position the renderable)
- expandInstanceBuffers
```
protected void expandInstanceBuffers()
```
- updateMatrices
```
protected void updateMatrices(GLMapView view)
```
- release
```
public void release()
```
- flagRelease
```
public void flagRelease()
```
- compileShader
```
protected static int compileShader(java.lang.String vtxShader,
                                   java.lang.String fragShader)
```
  Compile the main program shader
- deleteBuffers
```
protected static int[] deleteBuffers(java.nio.Buffer buffer,
                                     int[] bufIndex)
```
  Delete a buffer and return null so we can nullify the reference in 1 line
  
  Parameters:
  
  buffer - Buffer to delete (null to ignore)
  
  bufIndex - Buffer index (null to ignore)
  
  Returns:
  
  Null
- deleteBuffers
```
protected static int[] deleteBuffers(int[] bufIndex)
```
- createFloatBuffer
```
protected static java.nio.FloatBuffer createFloatBuffer(int size)
```
  Create a simple float buffer in native memory
  
  Parameters:
  
  size - Size of buffer in bytes
  
  Returns:
  
  New float buffer
- setupInstanceBuffer
```
protected static int[] setupInstanceBuffer(java.nio.Buffer buffer,
                                           int size)
```
  Setup an instance buffer
  
  Parameters:
  
  buffer - Underlying buffer data
  
  size - Size of buffer
  
  Returns:
  
  Generated buffer ID
- setupInstancePointer
```
protected static void setupInstancePointer(int idx,
                                           int size,
                                           int stride,
                                           int offset)
```
  Setup instance pointer
  
  Parameters:
  
  idx - Vertex attribute array index (see vertex shader layout locations)
  
  size - Size of each data point in the buffer
  
  stride - Data stride in bytes
  
  offset - Offset in bytes

Class GLInstancedRenderable

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SIZE_BUF

SIZE_VEC2

SIZE_VEC3

SIZE_VEC4

SIZE_MAT4

_name

_renderPass

_programID

_drawVersion

_drawInstances

_pendingInstances

_vao

_instanceLimit

_lcs

_released

_mxBufferID

_mxBufferSize

_mxBufferPtr

_mxBuffer

Constructor Detail

GLInstancedRenderable

Method Detail

getRenderPass

reset

addInstance

getNumInstances

compileShader

draw

setupVertexBuffers

drawInstanced

getPositionPointer

expandInstanceBuffers

updateMatrices

release

flagRelease

compileShader

deleteBuffers

deleteBuffers

createFloatBuffer

setupInstanceBuffer

setupInstancePointer