private void updatePassTextures(int width, int height, float scale)
{
int numPassTextures = mNumPasses > 1 ? 2 : 1;
bool needsUpdate = mPassTextures == null || mPassTextures.getLength() != numPassTextures || mPassTextures[0].getWidth() != width || mPassTextures[0].getHeight() != height;
if (needsUpdate)
{
if (mPassTextures != null)
{
AsVector <AsTexture> __textures_ = mPassTextures;
if (__textures_ != null)
{
foreach (AsTexture texture in __textures_)
{
texture.dispose();
}
}
mPassTextures.setLength(numPassTextures);
}
else
{
mPassTextures = new AsVector <AsTexture>(numPassTextures);
}
int i = 0;
for (; i < numPassTextures; ++i)
{
mPassTextures[i] = AsTexture.empty(width, height, PMA, true, scale);
}
}
}
private AsQuadBatch renderPasses(AsDisplayObject _object, AsRenderSupport support, float parentAlpha, bool intoCache)
{
AsTexture cacheTexture = null;
AsStage stage = _object.getStage();
AsContext3D context = AsStarling.getContext();
float scale = AsStarling.getCurrent().getContentScaleFactor();
if (stage == null)
{
throw new AsError("Filtered object must be on the stage.");
}
if (context == null)
{
throw new AsMissingContextError();
}
support.finishQuadBatch();
support.raiseDrawCount((uint)(mNumPasses));
support.pushMatrix();
support.setBlendMode(AsBlendMode.NORMAL);
AsRenderSupport.setBlendFactors(PMA);
mProjMatrix.copyFrom(support.getProjectionMatrix());
AsTexture previousRenderTarget = support.getRenderTarget();
if (previousRenderTarget != null)
{
throw new AsIllegalOperationError("It's currently not possible to stack filters! " + "This limitation will be removed in a future Stage3D version.");
}
calculateBounds(_object, stage, sBounds);
updateBuffers(context, sBounds);
updatePassTextures((int)(sBounds.width), (int)(sBounds.height), mResolution * scale);
if (intoCache)
{
cacheTexture = AsTexture.empty((int)(sBounds.width), (int)(sBounds.height), PMA, true, mResolution * scale);
}
support.setRenderTarget(mPassTextures[0]);
support.clear();
support.setOrthographicProjection(sBounds.x, sBounds.y, sBounds.width, sBounds.height);
_object.render(support, parentAlpha);
support.finishQuadBatch();
AsRenderSupport.setBlendFactors(PMA);
support.loadIdentity();
context.setVertexBufferAt(0, mVertexBuffer, AsVertexData.POSITION_OFFSET, AsContext3DVertexBufferFormat.FLOAT_2);
context.setVertexBufferAt(1, mVertexBuffer, AsVertexData.TEXCOORD_OFFSET, AsContext3DVertexBufferFormat.FLOAT_2);
int i = 0;
for (; i < mNumPasses; ++i)
{
if (i < mNumPasses - 1)
{
support.setRenderTarget(getPassTexture(i + 1));
support.clear();
}
else
{
if (intoCache)
{
support.setRenderTarget(cacheTexture);
support.clear();
}
else
{
support.setRenderTarget(previousRenderTarget);
support.getProjectionMatrix().copyFrom(mProjMatrix);
support.translateMatrix(mOffsetX, mOffsetY);
support.setBlendMode(_object.getBlendMode());
support.applyBlendMode(PMA);
}
}
AsTexture passTexture = getPassTexture(i);
context.setProgramConstantsFromMatrix(AsContext3DProgramType.VERTEX, 0, support.getMvpMatrix3D(), true);
context.setTextureAt(0, passTexture.get_base());
activate(i, context, passTexture);
context.drawTriangles(mIndexBuffer, 0, 2);
deactivate(i, context, passTexture);
}
context.setVertexBufferAt(0, null);
context.setVertexBufferAt(1, null);
context.setTextureAt(0, null);
support.popMatrix();
if (intoCache)
{
support.setRenderTarget(previousRenderTarget);
support.getProjectionMatrix().copyFrom(mProjMatrix);
AsQuadBatch quadBatch = new AsQuadBatch();
AsImage image = new AsImage(cacheTexture);
stage.getTransformationMatrix(_object, sTransformationMatrix);
AsMatrixUtil.prependTranslation(sTransformationMatrix, sBounds.x + mOffsetX, sBounds.y + mOffsetY);
quadBatch.addImage(image, 1.0f, sTransformationMatrix);
return(quadBatch);
}
else
{
return(null);
}
}
