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Camera3D render flags to help with Starling integration.

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Add flags to allow disabling of calls to "Context3D.clear" and "Context3D.present" during render pass to help support Alternativa3D/Starling integration.
This commit is contained in:
ChrisDenham
2013-02-06 17:25:54 +00:00
parent 05c165eb82
commit 035312e5a7
1 changed files with 26 additions and 12 deletions
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38
src/alternativa/engine3d/core/Camera3D.as
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@@ -78,6 +78,16 @@ public class Camera3D extends Object3D {
*/ */
public var orthographic:Boolean = false; public var orthographic:Boolean = false;
/**
* Determines whether context 3D is cleared prior to render (e.g. for layering with Starling output)
*/
public var renderClearsContext:Boolean = true;
/**
* Determines whether context 3D is presented after render (e.g. set false if Starling takes responsibilty for that)
*/
public var renderPresentsContext:Boolean = true;
/** /**
* @private * @private
*/ */
@@ -355,17 +365,19 @@ public class Camera3D extends Object3D {
directions[i] = new Vector3D(); directions[i] = new Vector3D();
} }
raysLength = view.raysLength; raysLength = view.raysLength;
var r:Number = ((view.backgroundColor >> 16) & 0xff)/0xff; if (renderClearsContext) {
var g:Number = ((view.backgroundColor >> 8) & 0xff)/0xff; var r:Number = ((view.backgroundColor >> 16) & 0xff)/0xff;
var b:Number = (view.backgroundColor & 0xff)/0xff; var g:Number = ((view.backgroundColor >> 8) & 0xff)/0xff;
if (view._canvas != null) { var b:Number = (view.backgroundColor & 0xff)/0xff;
r *= view.backgroundAlpha; if (view._canvas != null) {
g *= view.backgroundAlpha; r *= view.backgroundAlpha;
b *= view.backgroundAlpha; g *= view.backgroundAlpha;
b *= view.backgroundAlpha;
}
context3D.clear(r, g, b, view.backgroundAlpha);
} }
context3D.clear(r, g, b, view.backgroundAlpha);
// Check getting in frustum and occluding // Check getting in frustum and occluding
if (root.culling >= 0 && (root.boundBox == null || occludersLength == 0 || !root.boundBox.checkOcclusion(occluders, occludersLength, root.localToCameraTransform))) { if (root.culling >= 0 && (root.boundBox == null || occludersLength == 0 || !root.boundBox.checkOcclusion(occluders, occludersLength, root.localToCameraTransform))) {
// Check if the ray crossing the bounding box // Check if the ray crossing the bounding box
@@ -426,7 +438,9 @@ public class Camera3D extends Object3D {
} }
// Output // Output
if (view._canvas == null) { if (view._canvas == null) {
context3D.present(); if (renderPresentsContext) {
context3D.present();
}
} else { } else {
context3D.drawToBitmapData(view._canvas); context3D.drawToBitmapData(view._canvas);
context3D.present(); context3D.present();
@@ -510,7 +524,7 @@ public class Camera3D extends Object3D {
/** /**
* Calculates a ray in global space. The ray defines by its <code>origin</code> and <code>direction</code>. * Calculates a ray in global space. The ray defines by its <code>origin</code> and <code>direction</code>.
* The ray goes like from the global camera position * The ray goes like from the global camera position
* trough the point corresponding to the viewport point with coordinates <code>viewX</code> и <code>viewY</code>. * trough the point corresponding to the viewport point with coordinates <code>viewX</code> и <code>viewY</code>.
* The ray origin placed within <code>nearClipping</code> plane. * The ray origin placed within <code>nearClipping</code> plane.
* This ray can be used in the <code>Object3D.intersectRay()</code> method. The result writes to passed arguments. * This ray can be used in the <code>Object3D.intersectRay()</code> method. The result writes to passed arguments.
* *