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); } }