com.threerings.opengl.renderer
Class SimpleBatch

java.lang.Object
  com.threerings.opengl.renderer.Batch
      com.threerings.opengl.renderer.SimpleBatch

All Implemented Interfaces:

Cloneable

public class SimpleBatch
extends Batch

A batch that consists of a set of render states and a stateless draw command.

Nested Class Summary

static class	SimpleBatch.CallList Draws the batch by calling a display list containing the geometry.
static class	SimpleBatch.DrawArrays Draws the batch by calling GL11.glDrawArrays(int, int, int).
static class	SimpleBatch.DrawBufferElements Draws the batch by calling GL11.glDrawElements(int, java.nio.ByteBuffer) using the current buffer object.
static class	SimpleBatch.DrawBufferRangeElements Draws the batch by calling GL12.glDrawRangeElements(int, int, int, java.nio.ByteBuffer) using the current buffer object.
static class	SimpleBatch.DrawCommand The superclass for the stateless draw commands that actually draw the primitives.
static class	SimpleBatch.DrawElements Draws the batch by calling GL11.glDrawElements(int, java.nio.ByteBuffer).
static class	SimpleBatch.DrawRangeElements Draws the batch by calling GL12.glDrawRangeElements(int, int, int, java.nio.ByteBuffer).
static class	SimpleBatch.DrawShortElements Draws the batch by calling GL11.glDrawElements(int, java.nio.ByteBuffer) using a short buffer.
static class	SimpleBatch.DrawShortRangeElements Draws the batch by calling GL12.glDrawRangeElements(int, int, int, java.nio.ByteBuffer) using a short buffer.

Field Summary

protected SimpleBatch.DrawCommand	_command The stateless draw command that actually draws the batch.
protected RenderState[]	_states The render states to apply before drawing.

Fields inherited from class com.threerings.opengl.renderer.Batch

depth, key

Constructor Summary

SimpleBatch(RenderState[] states, SimpleBatch.DrawCommand command)
Creates a new batch with the specified states and command.

Method Summary

SimpleBatch	clone()
static SimpleBatch.DrawElements	createDrawBufferElements(int mode, int start, int end, int count, int type, long offset) Creates a SimpleBatch.DrawBufferRangeElements if the driver supports it; otherwise, falls back and creates a SimpleBatch.DrawBufferElements.
static SimpleBatch.DrawElements	createDrawShortElements(int mode, int start, int end, ShortBuffer indices) Creates a SimpleBatch.DrawShortRangeElements if the driver supports it; otherwise, falls back and creates a SimpleBatch.DrawShortElements.
boolean	draw(Renderer renderer) Draws this batch using the specified renderer.
SimpleBatch.DrawCommand	getCommand() Returns a reference to the batch's draw command.
int	getPrimitiveCount() Returns the number of primitives in this batch (optional; returns zero by default).
protected static int	getPrimitiveCount(int mode, int count) Returns the number of primitives rendered based on the mode and index count.
RenderState[]	getStates() Returns a reference to the batch's set of render states.
protected static int	sizeof(int type) Returns the size, in bytes, of the specified OpenGL primitive type.
void	updateKey() Updates the batch's state key using the current set of states.

Methods inherited from class com.threerings.opengl.renderer.Batch

compareKeys

Methods inherited from class java.lang.Object

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

Field Detail

_states

protected RenderState[] _states

The render states to apply before drawing.

_command

protected SimpleBatch.DrawCommand _command

The stateless draw command that actually draws the batch.

Constructor Detail

SimpleBatch

public SimpleBatch(RenderState[] states,
                   SimpleBatch.DrawCommand command)

Creates a new batch with the specified states and command.

Method Detail

createDrawBufferElements

public static SimpleBatch.DrawElements createDrawBufferElements(int mode,
                                                                int start,
                                                                int end,
                                                                int count,
                                                                int type,
                                                                long offset)

Creates a SimpleBatch.DrawBufferRangeElements if the driver supports it; otherwise, falls back and creates a SimpleBatch.DrawBufferElements.

createDrawShortElements

public static SimpleBatch.DrawElements createDrawShortElements(int mode,
                                                               int start,
                                                               int end,
                                                               ShortBuffer indices)

Creates a SimpleBatch.DrawShortRangeElements if the driver supports it; otherwise, falls back and creates a SimpleBatch.DrawShortElements.

getStates

public RenderState[] getStates()

Returns a reference to the batch's set of render states.

getCommand

public SimpleBatch.DrawCommand getCommand()

Returns a reference to the batch's draw command.

updateKey

public void updateKey()

Updates the batch's state key using the current set of states.

draw

public boolean draw(Renderer renderer)

Description copied from class: Batch

Draws this batch using the specified renderer.

Specified by:

draw in class Batch

Returns:

true if the batch changed the color state, in which case it should be invalidated.

getPrimitiveCount

public int getPrimitiveCount()

Description copied from class: Batch

Returns the number of primitives in this batch (optional; returns zero by default).

Overrides:

getPrimitiveCount in class Batch

clone

public SimpleBatch clone()

Overrides:

clone in class Batch

sizeof

protected static int sizeof(int type)

Returns the size, in bytes, of the specified OpenGL primitive type.

getPrimitiveCount

protected static int getPrimitiveCount(int mode,
                                       int count)

Returns the number of primitives rendered based on the mode and index count.