/**
* 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);
}
private void copyLightState(final LightState pkLState, final LightState lightState) {
lightState.setTwoSidedLighting(pkLState.getTwoSidedLighting());
lightState.setLocalViewer(pkLState.getLocalViewer());
lightState.setSeparateSpecular(pkLState.getSeparateSpecular());
lightState.setEnabled(pkLState.isEnabled());
for (int i = 0, maxL = pkLState.getLightList().size(); i < maxL; i++) {
final Light pkLight = pkLState.get(i);
if (pkLight != null) {
lightState.attach(pkLight);
}
}
}
@Override
public RenderState extract(final Stack<? extends RenderState> stack, final Spatial spat) {
if (spat == null) {
return stack.peek();
}
final LightCombineMode mode = spat.getLightCombineMode();
final Mesh mesh = (Mesh) spat;
LightState lightState = mesh.getLightState();
if (lightState == null) {
lightState = new LightState();
mesh.setLightState(lightState);
}
lightState.detachAll();
if (mode == LightCombineMode.Replace || (mode != LightCombineMode.Off && stack.size() == 1)) {
// todo: use dummy state if off?
final LightState copyLightState = (LightState) stack.peek();
copyLightState(copyLightState, lightState);
} else {
// accumulate the lights in the stack into a single LightState object
final Object states[] = stack.toArray();
boolean foundEnabled = false;
switch (mode) {
case CombineClosest:
case CombineClosestEnabled:
for (int iIndex = states.length - 1; iIndex >= 0; iIndex--) {
final LightState pkLState = (LightState) states[iIndex];
if (!pkLState.isEnabled()) {
if (mode == LightCombineMode.CombineClosestEnabled) {
break;
}
continue;
}
foundEnabled = true;
copyLightState(pkLState, lightState);
}
break;
case CombineFirst:
for (int iIndex = 0, max = states.length; iIndex < max; iIndex++) {
final LightState pkLState = (LightState) states[iIndex];
if (!pkLState.isEnabled()) {
continue;
}
foundEnabled = true;
copyLightState(pkLState, lightState);
}
break;
case Off:
break;
}
lightState.setEnabled(foundEnabled);
}
return lightState;
}