Give each source file a unique name
This commit is contained in:
Tom Payne
531
src/ol/renderer/webgl/webgltilelayerrenderer.js
Normal file
531
src/ol/renderer/webgl/webgltilelayerrenderer.js
Normal file
@@ -0,0 +1,531 @@
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// FIXME large resolutions lead to too large framebuffers :-(
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// FIXME animated shaders! check in redraw
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goog.provide('ol.renderer.webgl.TileLayer');
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goog.provide('ol.renderer.webgl.tilelayerrenderer');
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goog.provide('ol.renderer.webgl.tilelayerrenderer.shader.Fragment');
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goog.provide('ol.renderer.webgl.tilelayerrenderer.shader.Vertex');
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goog.require('goog.array');
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goog.require('goog.asserts');
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goog.require('goog.debug.Logger');
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goog.require('goog.events.EventType');
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goog.require('goog.object');
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goog.require('goog.vec.Mat4');
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goog.require('goog.vec.Vec4');
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goog.require('goog.webgl');
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goog.require('ol.Coordinate');
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goog.require('ol.Size');
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goog.require('ol.TileState');
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goog.require('ol.layer.TileLayer');
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goog.require('ol.renderer.webgl.FragmentShader');
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goog.require('ol.renderer.webgl.Layer');
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goog.require('ol.renderer.webgl.VertexShader');
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/**
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* @constructor
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* @extends {ol.renderer.webgl.FragmentShader}
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*/
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ol.renderer.webgl.tilelayerrenderer.shader.Fragment = function() {
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goog.base(this, [
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'precision mediump float;',
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'',
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'uniform sampler2D uTexture;',
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'',
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'varying vec2 vTexCoord;',
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'',
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'void main(void) {',
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' gl_FragColor = texture2D(uTexture, vTexCoord);',
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'}'
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].join('\n'));
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};
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goog.inherits(
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ol.renderer.webgl.tilelayerrenderer.shader.Fragment,
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ol.renderer.webgl.FragmentShader);
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goog.addSingletonGetter(ol.renderer.webgl.tilelayerrenderer.shader.Fragment);
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/**
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* @constructor
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* @extends {ol.renderer.webgl.VertexShader}
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*/
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ol.renderer.webgl.tilelayerrenderer.shader.Vertex = function() {
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goog.base(this, [
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'attribute vec2 aPosition;',
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'attribute vec2 aTexCoord;',
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'',
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'varying vec2 vTexCoord;',
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'',
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'uniform vec4 uTileOffset;',
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'',
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'void main(void) {',
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' gl_Position.xy = aPosition * uTileOffset.xy + uTileOffset.zw;',
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' gl_Position.z = 0.;',
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' gl_Position.w = 1.;',
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' vTexCoord = aTexCoord;',
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'}'
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].join('\n'));
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};
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goog.inherits(
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ol.renderer.webgl.tilelayerrenderer.shader.Vertex,
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ol.renderer.webgl.VertexShader);
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goog.addSingletonGetter(ol.renderer.webgl.tilelayerrenderer.shader.Vertex);
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/**
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* @constructor
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* @extends {ol.renderer.webgl.Layer}
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* @param {ol.renderer.Map} mapRenderer Map renderer.
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* @param {ol.layer.TileLayer} tileLayer Tile layer.
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*/
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ol.renderer.webgl.TileLayer = function(mapRenderer, tileLayer) {
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goog.base(this, mapRenderer, tileLayer);
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if (goog.DEBUG) {
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/**
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* @inheritDoc
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*/
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this.logger = goog.debug.Logger.getLogger(
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'ol.renderer.webgl.tilelayerrenderer.' + goog.getUid(this));
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}
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/**
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* @private
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* @type {ol.renderer.webgl.FragmentShader}
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*/
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this.fragmentShader_ =
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ol.renderer.webgl.tilelayerrenderer.shader.Fragment.getInstance();
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/**
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* @private
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* @type {ol.renderer.webgl.VertexShader}
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*/
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this.vertexShader_ =
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ol.renderer.webgl.tilelayerrenderer.shader.Vertex.getInstance();
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/**
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* @private
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* @type {{aPosition: number,
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* aTexCoord: number,
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* uTileOffset: WebGLUniformLocation,
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* uTexture: WebGLUniformLocation}|null}
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*/
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this.locations_ = null;
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/**
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* @private
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* @type {WebGLBuffer}
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*/
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this.arrayBuffer_ = null;
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/**
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* @private
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* @type {WebGLTexture}
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*/
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this.texture_ = null;
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/**
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* @private
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* @type {WebGLFramebuffer}
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*/
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this.framebuffer_ = null;
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/**
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* @private
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* @type {number|undefined}
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*/
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this.framebufferDimension_ = undefined;
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/**
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* @private
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* @type {Object.<number, (number|null)>}
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*/
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this.tileChangeListenerKeys_ = {};
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/**
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* @private
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* @type {goog.vec.Mat4.AnyType}
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*/
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this.matrix_ = goog.vec.Mat4.createNumber();
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/**
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* @private
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* @type {ol.TileRange}
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*/
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this.renderedTileRange_ = null;
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/**
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* @private
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* @type {ol.Extent}
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*/
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this.renderedFramebufferExtent_ = null;
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};
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goog.inherits(ol.renderer.webgl.TileLayer, ol.renderer.webgl.Layer);
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/**
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* @param {number} framebufferDimension Framebuffer dimension.
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* @private
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*/
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ol.renderer.webgl.TileLayer.prototype.bindFramebuffer_ =
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function(framebufferDimension) {
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var mapRenderer = this.getMapRenderer();
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var gl = mapRenderer.getGL();
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if (!goog.isDef(this.framebufferDimension_) ||
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this.framebufferDimension_ != framebufferDimension) {
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if (goog.DEBUG) {
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this.logger.info('re-sizing framebuffer');
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}
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if (ol.renderer.webgl.FREE_RESOURCES_IMMEDIATELY) {
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if (goog.DEBUG) {
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this.logger.info('freeing WebGL resources');
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}
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if (!gl.isContextLost()) {
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gl.deleteFramebuffer(this.framebuffer_);
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gl.deleteTexture(this.texture_);
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}
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} else {
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var map = this.getMap();
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goog.events.listenOnce(
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map,
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ol.MapEventType.POSTRENDER,
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goog.partial(function(gl, framebuffer, texture) {
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if (goog.DEBUG) {
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this.logger.info('freeing WebGL resources on postrender');
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}
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if (!gl.isContextLost()) {
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gl.deleteFramebuffer(framebuffer);
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gl.deleteTexture(texture);
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}
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}, gl, this.framebuffer_, this.texture_));
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}
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var texture = gl.createTexture();
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gl.bindTexture(goog.webgl.TEXTURE_2D, texture);
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gl.texImage2D(goog.webgl.TEXTURE_2D, 0, goog.webgl.RGBA,
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framebufferDimension, framebufferDimension, 0, goog.webgl.RGBA,
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goog.webgl.UNSIGNED_BYTE, null);
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gl.texParameteri(goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MAG_FILTER,
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goog.webgl.LINEAR);
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gl.texParameteri(goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MIN_FILTER,
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goog.webgl.LINEAR);
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var framebuffer = gl.createFramebuffer();
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gl.bindFramebuffer(goog.webgl.FRAMEBUFFER, framebuffer);
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gl.framebufferTexture2D(goog.webgl.FRAMEBUFFER,
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goog.webgl.COLOR_ATTACHMENT0, goog.webgl.TEXTURE_2D, texture, 0);
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this.texture_ = texture;
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this.framebuffer_ = framebuffer;
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this.framebufferDimension_ = framebufferDimension;
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} else {
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gl.bindFramebuffer(goog.webgl.FRAMEBUFFER, this.framebuffer_);
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}
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};
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/**
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* @inheritDoc
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*/
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ol.renderer.webgl.TileLayer.prototype.disposeInternal = function() {
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var mapRenderer = this.getMapRenderer();
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var gl = mapRenderer.getGL();
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if (!gl.isContextLost()) {
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gl.deleteBuffer(this.arrayBuffer_);
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gl.deleteFramebuffer(this.framebuffer_);
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gl.deleteTexture(this.texture_);
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}
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goog.base(this, 'disposeInternal');
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};
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/**
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* @return {ol.layer.TileLayer} Layer.
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* @inheritDoc
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*/
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ol.renderer.webgl.TileLayer.prototype.getLayer = function() {
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return /** @type {ol.layer.TileLayer} */ goog.base(this, 'getLayer');
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};
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/**
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* @inheritDoc
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*/
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ol.renderer.webgl.TileLayer.prototype.getMatrix = function() {
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return this.matrix_;
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};
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/**
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* @inheritDoc
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*/
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ol.renderer.webgl.TileLayer.prototype.getTexture = function() {
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return this.texture_;
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};
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/**
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* @protected
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*/
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ol.renderer.webgl.TileLayer.prototype.handleTileChange = function() {
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this.dispatchChangeEvent();
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};
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/**
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* @inheritDoc
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*/
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ol.renderer.webgl.TileLayer.prototype.handleWebGLContextLost = function() {
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this.locations_ = null;
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this.arrayBuffer_ = null;
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this.texture_ = null;
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this.framebuffer_ = null;
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this.framebufferDimension_ = undefined;
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};
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/**
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* @inheritDoc
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*/
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ol.renderer.webgl.TileLayer.prototype.render = function() {
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var animate = false;
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var mapRenderer = this.getMapRenderer();
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var map = this.getMap();
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var gl = mapRenderer.getGL();
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goog.asserts.assert(map.isDef());
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var mapCenter = map.getCenter();
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var mapExtent = map.getExtent();
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var mapResolution = /** @type {number} */ map.getResolution();
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var mapRotatedExtent = map.getRotatedExtent();
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var mapRotation = map.getRotation();
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var tileLayer = this.getLayer();
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var tileSource = tileLayer.getTileSource();
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var tileGrid = tileSource.getTileGrid();
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var z = tileGrid.getZForResolution(mapResolution);
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var tileResolution = tileGrid.getResolution(z);
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var tileRange = tileGrid.getTileRangeForExtentAndResolution(
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mapRotatedExtent, tileResolution);
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var framebufferExtent;
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if (!goog.isNull(this.renderedTileRange_) &&
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this.renderedTileRange_.equals(tileRange)) {
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framebufferExtent = this.renderedFramebufferExtent_;
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} else {
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var tileRangeSize = tileRange.getSize();
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var tileSize = tileGrid.getTileSize();
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var maxDimension = Math.max(
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tileRangeSize.width * tileSize.width,
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tileRangeSize.height * tileSize.height);
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var framebufferDimension =
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Math.pow(2, Math.ceil(Math.log(maxDimension) / Math.log(2)));
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var framebufferExtentSize = new ol.Size(
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tileResolution * framebufferDimension,
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tileResolution * framebufferDimension);
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var origin = tileGrid.getOrigin(z);
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var minX = origin.x + tileRange.minX * tileSize.width * tileResolution;
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var minY = origin.y + tileRange.minY * tileSize.height * tileResolution;
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framebufferExtent = new ol.Extent(
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minX,
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minY,
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minX + framebufferExtentSize.width,
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minY + framebufferExtentSize.height);
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this.bindFramebuffer_(framebufferDimension);
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gl.viewport(0, 0, framebufferDimension, framebufferDimension);
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gl.clearColor(0, 0, 0, 0);
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gl.clear(goog.webgl.COLOR_BUFFER_BIT);
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gl.disable(goog.webgl.BLEND);
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var program = mapRenderer.getProgram(
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this.fragmentShader_, this.vertexShader_);
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gl.useProgram(program);
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if (goog.isNull(this.locations_)) {
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this.locations_ = {
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aPosition: gl.getAttribLocation(program, 'aPosition'),
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aTexCoord: gl.getAttribLocation(program, 'aTexCoord'),
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uTileOffset: gl.getUniformLocation(program, 'uTileOffset'),
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uTexture: gl.getUniformLocation(program, 'uTexture')
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};
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}
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if (goog.isNull(this.arrayBuffer_)) {
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var arrayBuffer = gl.createBuffer();
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gl.bindBuffer(goog.webgl.ARRAY_BUFFER, arrayBuffer);
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gl.bufferData(goog.webgl.ARRAY_BUFFER, new Float32Array([
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0, 0, 0, 1,
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1, 0, 1, 1,
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0, 1, 0, 0,
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1, 1, 1, 0
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]), goog.webgl.STATIC_DRAW);
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this.arrayBuffer_ = arrayBuffer;
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} else {
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gl.bindBuffer(goog.webgl.ARRAY_BUFFER, this.arrayBuffer_);
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}
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gl.enableVertexAttribArray(this.locations_.aPosition);
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gl.vertexAttribPointer(
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this.locations_.aPosition, 2, goog.webgl.FLOAT, false, 16, 0);
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gl.enableVertexAttribArray(this.locations_.aTexCoord);
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gl.vertexAttribPointer(
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this.locations_.aTexCoord, 2, goog.webgl.FLOAT, false, 16, 8);
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gl.uniform1i(this.locations_.uTexture, 0);
|
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|
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/**
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* @type {Object.<number, Object.<string, ol.Tile>>}
|
||||
*/
|
||||
var tilesToDrawByZ = {};
|
||||
|
||||
/**
|
||||
* @type {Array.<Image>}
|
||||
*/
|
||||
var imagesToLoad = [];
|
||||
|
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var allTilesLoaded = true;
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|
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tilesToDrawByZ[z] = {};
|
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tileRange.forEachTileCoord(z, function(tileCoord) {
|
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var tile = tileSource.getTile(tileCoord);
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||||
|
||||
if (goog.isNull(tile)) {
|
||||
// FIXME consider returning here as this is outside the source's extent
|
||||
} else if (tile.getState() == ol.TileState.LOADED) {
|
||||
if (mapRenderer.isImageTextureLoaded(tile.getImage())) {
|
||||
tilesToDrawByZ[z][tileCoord.toString()] = tile;
|
||||
return;
|
||||
} else {
|
||||
imagesToLoad.push(tile.getImage());
|
||||
allTilesLoaded = false;
|
||||
}
|
||||
} else {
|
||||
var tileKey = goog.getUid(tile);
|
||||
if (!(tileKey in this.tileChangeListenerKeys_)) {
|
||||
tile.load();
|
||||
// FIXME will need to handle aborts as well
|
||||
this.tileChangeListenerKeys_[tileKey] = goog.events.listen(tile,
|
||||
goog.events.EventType.CHANGE, this.handleTileChange, false, this);
|
||||
}
|
||||
allTilesLoaded = false;
|
||||
}
|
||||
|
||||
// FIXME this could be more efficient about filling partial holes
|
||||
tileGrid.forEachTileCoordParentTileRange(
|
||||
tileCoord,
|
||||
function(z, tileRange) {
|
||||
var fullyCovered = true;
|
||||
tileRange.forEachTileCoord(z, function(tileCoord) {
|
||||
var tileCoordKey = tileCoord.toString();
|
||||
if (tilesToDrawByZ[z] && tilesToDrawByZ[z][tileCoordKey]) {
|
||||
return;
|
||||
}
|
||||
var tile = tileSource.getTile(tileCoord);
|
||||
if (!goog.isNull(tile) &&
|
||||
tile.getState() == ol.TileState.LOADED) {
|
||||
if (!tilesToDrawByZ[z]) {
|
||||
tilesToDrawByZ[z] = {};
|
||||
}
|
||||
tilesToDrawByZ[z][tileCoordKey] = tile;
|
||||
} else {
|
||||
fullyCovered = false;
|
||||
}
|
||||
});
|
||||
return fullyCovered;
|
||||
});
|
||||
|
||||
}, this);
|
||||
|
||||
/** @type {Array.<number>} */
|
||||
var zs = goog.array.map(goog.object.getKeys(tilesToDrawByZ), Number);
|
||||
goog.array.sort(zs);
|
||||
var uTileOffset = goog.vec.Vec4.createFloat32();
|
||||
goog.array.forEach(zs, function(z) {
|
||||
goog.object.forEach(tilesToDrawByZ[z], function(tile) {
|
||||
var tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord);
|
||||
var sx = 2 * tileExtent.getWidth() / framebufferExtentSize.width;
|
||||
var sy = 2 * tileExtent.getHeight() / framebufferExtentSize.height;
|
||||
var tx = 2 * (tileExtent.minX - framebufferExtent.minX) /
|
||||
framebufferExtentSize.width - 1;
|
||||
var ty = 2 * (tileExtent.minY - framebufferExtent.minY) /
|
||||
framebufferExtentSize.height - 1;
|
||||
goog.vec.Vec4.setFromValues(uTileOffset, sx, sy, tx, ty);
|
||||
gl.uniform4fv(this.locations_.uTileOffset, uTileOffset);
|
||||
mapRenderer.bindImageTexture(
|
||||
tile.getImage(), goog.webgl.LINEAR, goog.webgl.LINEAR);
|
||||
gl.drawArrays(goog.webgl.TRIANGLE_STRIP, 0, 4);
|
||||
}, this);
|
||||
}, this);
|
||||
|
||||
if (!goog.array.isEmpty(imagesToLoad)) {
|
||||
goog.events.listenOnce(
|
||||
map,
|
||||
ol.MapEventType.POSTRENDER,
|
||||
goog.partial(function(mapRenderer, imagesToLoad) {
|
||||
if (goog.DEBUG) {
|
||||
this.logger.info(
|
||||
'uploading ' + imagesToLoad.length + ' textures');
|
||||
}
|
||||
goog.array.forEach(imagesToLoad, function(image) {
|
||||
mapRenderer.bindImageTexture(
|
||||
image, goog.webgl.LINEAR, goog.webgl.LINEAR);
|
||||
});
|
||||
if (goog.DEBUG) {
|
||||
this.logger.info('uploaded textures');
|
||||
}
|
||||
}, mapRenderer, imagesToLoad));
|
||||
animate = true;
|
||||
}
|
||||
|
||||
if (allTilesLoaded) {
|
||||
this.renderedTileRange_ = tileRange;
|
||||
this.renderedFramebufferExtent_ = framebufferExtent;
|
||||
} else {
|
||||
this.renderedTileRange_ = null;
|
||||
this.renderedFramebufferExtent_ = null;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
goog.vec.Mat4.makeIdentity(this.matrix_);
|
||||
goog.vec.Mat4.translate(this.matrix_,
|
||||
(mapCenter.x - framebufferExtent.minX) /
|
||||
(framebufferExtent.maxX - framebufferExtent.minX),
|
||||
(mapCenter.y - framebufferExtent.minY) /
|
||||
(framebufferExtent.maxY - framebufferExtent.minY),
|
||||
0);
|
||||
if (goog.isDef(mapRotation)) {
|
||||
goog.vec.Mat4.rotateZ(this.matrix_, mapRotation);
|
||||
}
|
||||
goog.vec.Mat4.scale(this.matrix_,
|
||||
(mapExtent.maxX - mapExtent.minX) /
|
||||
(framebufferExtent.maxX - framebufferExtent.minX),
|
||||
(mapExtent.maxY - mapExtent.minY) /
|
||||
(framebufferExtent.maxY - framebufferExtent.minY),
|
||||
1);
|
||||
goog.vec.Mat4.translate(this.matrix_,
|
||||
-0.5,
|
||||
-0.5,
|
||||
0);
|
||||
|
||||
return animate;
|
||||
|
||||
};
|
||||
Reference in New Issue
Block a user