/**
* Initialize this ProjectedDepthTexture with the renderer
*
* @param r
*/
public void init(final Renderer r) {
// already initialized ?
if (textureRenderer != null) {
return;
}
textureRenderer = ImageUtil.createTextureRenderer(0, 0, r, true);
if (isParallel) {
textureRenderer.getCamera().setProjectionMode(Camera.ProjectionMode.Parallel);
}
// Enforce performance enhancing states on the renderer.
// No textures or colors are required since we're only
// interested in recording depth.
// Also only need front faces when rendering the shadow maps
// turn off clipping
ClipState noClip = new ClipState();
noClip.setEnabled(false);
textureRenderer.enforceState(noClip);
// turn off texturing
TextureState noTexture = new TextureState();
noTexture.setEnabled(false);
textureRenderer.enforceState(noTexture);
// turn off colors
ColorMaskState colorDisabled = new ColorMaskState();
colorDisabled.setAll(false);
textureRenderer.enforceState(colorDisabled);
// cull back faces
CullState cullFace = new CullState();
cullFace.setEnabled(true);
cullFace.setCullFace(CullState.Face.Back);
textureRenderer.enforceState(cullFace);
// turn off lights
LightState noLights = new LightState();
noLights.setEnabled(false);
textureRenderer.enforceState(noLights);
// use flat shading
ShadingState flat = new ShadingState();
flat.setShadingMode(ShadingMode.Flat);
textureRenderer.enforceState(flat);
// disable GLSLShaderObjectsState
GLSLShaderObjectsState glsl = new GLSLShaderObjectsState();
glsl.setEnabled(false);
textureRenderer.enforceState(glsl);
// enforce the shadow offset parameters
textureRenderer.enforceState(offsetState);
if (texture == null) {
createTexture();
}
textureRenderer.setupTexture(texture);
}
/** Clean up. */
public void dispose() {
if (textureRenderer != null) {
try {
textureRenderer.cleanup();
textureRenderer = null;
} catch (Exception e) {
// do nothing
}
}
}
// Render the texture
public void clear(final Renderer r) {
updateProjection();
// Render only vertices, nothing else
setRenderVertexOnly(true);
// render
textureRenderer.clear(texture, Renderer.BUFFER_COLOR_AND_DEPTH);
// restore states
setRenderVertexOnly(false);
// set the texture coordinate matrix
texture.setTextureMatrix(projectionMatrix);
}
/**
* Copy the texture to another
*
* @param tex
*/
public void copyToTexture(Texture tex) {
textureRenderer.copyToTexture(
tex, 0, 0, textureRenderer.getWidth(), textureRenderer.getHeight(), 0, 0);
}