80 lines
2.0 KiB
JavaScript
80 lines
2.0 KiB
JavaScript
import BoundingRectangle from "../Core/BoundingRectangle.js";
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import destroyObject from "../Core/destroyObject.js";
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import FramebufferManager from "../Renderer/FramebufferManager.js";
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import PassState from "../Renderer/PassState.js";
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/**
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* @private
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*/
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function PickDepthFramebuffer() {
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this._framebuffer = new FramebufferManager({
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color: false,
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depthStencil: true,
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supportsDepthTexture: true,
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});
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this._passState = undefined;
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}
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Object.defineProperties(PickDepthFramebuffer.prototype, {
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framebuffer: {
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get: function () {
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return this._framebuffer.framebuffer;
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},
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},
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});
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function destroyResources(pickDepth) {
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pickDepth._framebuffer.destroy();
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}
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function createResources(pickDepth, context) {
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const width = context.drawingBufferWidth;
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const height = context.drawingBufferHeight;
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pickDepth._framebuffer.update(context, width, height);
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const passState = new PassState(context);
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passState.blendingEnabled = false;
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passState.scissorTest = {
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enabled: true,
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rectangle: new BoundingRectangle(),
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};
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passState.viewport = new BoundingRectangle();
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pickDepth._passState = passState;
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}
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PickDepthFramebuffer.prototype.update = function (
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context,
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drawingBufferPosition,
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viewport
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) {
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const width = viewport.width;
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const height = viewport.height;
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if (this._framebuffer.isDirty(width, height)) {
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createResources(this, context);
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}
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const framebuffer = this.framebuffer;
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const passState = this._passState;
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passState.framebuffer = framebuffer;
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passState.viewport.width = width;
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passState.viewport.height = height;
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passState.scissorTest.rectangle.x = drawingBufferPosition.x;
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passState.scissorTest.rectangle.y = height - drawingBufferPosition.y;
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passState.scissorTest.rectangle.width = 1;
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passState.scissorTest.rectangle.height = 1;
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return passState;
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};
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PickDepthFramebuffer.prototype.isDestroyed = function () {
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return false;
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};
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PickDepthFramebuffer.prototype.destroy = function () {
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destroyResources(this);
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return destroyObject(this);
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};
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export default PickDepthFramebuffer;
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