Give each source file a unique name
This commit is contained in:
Tom Payne
642
src/ol/renderer/webgl/webglmaprenderer.js
Normal file
642
src/ol/renderer/webgl/webglmaprenderer.js
Normal file
@@ -0,0 +1,642 @@
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// FIXME clear textureCache
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// FIXME defer texture loads until after render when animating
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// FIXME generational tile texture garbage collector newFrame/get
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// FIXME defer cleanup until post-render
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// FIXME check against gl.getParameter(webgl.MAX_TEXTURE_SIZE)
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goog.provide('ol.renderer.webgl.Map');
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goog.provide('ol.renderer.webgl.map.shader');
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goog.require('goog.debug.Logger');
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goog.require('goog.dispose');
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goog.require('goog.dom');
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goog.require('goog.dom.TagName');
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goog.require('goog.events');
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goog.require('goog.events.Event');
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goog.require('goog.events.EventType');
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goog.require('goog.functions');
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goog.require('goog.style');
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goog.require('goog.webgl');
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goog.require('ol.layer.Layer');
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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.TileLayer');
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goog.require('ol.renderer.webgl.VertexShader');
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goog.require('ol.webgl');
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goog.require('ol.webgl.WebGLContextEventType');
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/**
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* @typedef {{magFilter: number, minFilter: number, texture: WebGLTexture}}
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*/
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ol.renderer.webgl.TextureCacheEntry;
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/**
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* @constructor
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* @extends {ol.renderer.webgl.FragmentShader}
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* @see https://github.com/evanw/glfx.js/blob/master/src/filters/adjust/brightnesscontrast.js
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* @see https://github.com/evanw/glfx.js/blob/master/src/filters/adjust/huesaturation.js
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*/
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ol.renderer.webgl.map.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 float uBrightness;',
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'uniform float uContrast;',
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'uniform float uHue;',
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'uniform float uOpacity;',
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'uniform mat4 uMatrix;',
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'uniform float uSaturation;',
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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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'',
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' vec4 texCoord = uMatrix * vec4(vTexCoord, 0., 1.);',
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' vec4 color = texture2D(uTexture, texCoord.st);',
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'',
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' if (uHue != 0.) {',
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' float angle = uHue * 3.14159265;',
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' float s = sin(angle), c = cos(angle);',
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' vec3 weights = (vec3(2. * c, -sqrt(3.) * s - c, sqrt(3.) * s - c)',
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' + 1.) / 3.;',
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' color.rgb = vec3(',
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' dot(color.rgb, weights.xyz),',
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' dot(color.rgb, weights.zxy),',
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' dot(color.rgb, weights.yzx)',
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' );',
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' }',
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'',
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' if (uSaturation != 0.) {',
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' float average = (color.r + color.g + color.b) / 3.;',
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' if (uSaturation > 0.) {',
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' color.rgb += (average - color.rgb)',
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' * (1. - 1. / (1. - uSaturation));',
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' } else {',
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' color.rgb += (average - color.rgb) * -uSaturation;',
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' }',
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' }',
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'',
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' color.rgb += uBrightness;',
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'',
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' if (uContrast != 0.) {',
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' if (uContrast > 0.) {',
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' color.rgb = (color.rgb - 0.5) / (1. - uContrast) + 0.5;',
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' } else {',
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' color.rgb = (color.rgb - 0.5) * (1. + uContrast) + 0.5;',
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' }',
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' }',
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'',
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' color.a = color.a * uOpacity;',
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'',
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' gl_FragColor = color;',
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'',
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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.map.shader.Fragment, ol.renderer.webgl.FragmentShader);
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goog.addSingletonGetter(ol.renderer.webgl.map.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.map.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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'void main(void) {',
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' gl_Position = vec4(aPosition, 0., 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.map.shader.Vertex, ol.renderer.webgl.VertexShader);
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goog.addSingletonGetter(ol.renderer.webgl.map.shader.Vertex);
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/**
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* @constructor
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* @extends {ol.renderer.Map}
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* @param {Element} container Container.
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* @param {ol.Map} map Map.
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*/
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ol.renderer.webgl.Map = function(container, map) {
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goog.base(this, container, map);
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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.maprenderer.' + goog.getUid(this));
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}
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/**
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* @private
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* @type {Element}
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*/
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this.canvas_ = goog.dom.createElement(goog.dom.TagName.CANVAS);
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this.canvas_.height = container.clientHeight;
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this.canvas_.width = container.clientWidth;
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this.canvas_.className = 'ol-unselectable';
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goog.dom.insertChildAt(container, this.canvas_, 0);
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/**
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* @private
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* @type {ol.Size}
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*/
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this.canvasSize_ = new ol.Size(container.clientHeight, container.clientWidth);
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/**
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* @private
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* @type {WebGLRenderingContext}
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*/
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this.gl_ = ol.webgl.getContext(this.canvas_, {
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alpha: false,
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antialias: true,
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depth: false,
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preserveDrawingBuffer: false,
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stencil: false
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});
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goog.asserts.assert(!goog.isNull(this.gl_));
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goog.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.LOST,
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this.handleWebGLContextLost, false, this);
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goog.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.RESTORED,
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this.handleWebGLContextResourced, false, this);
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/**
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* @private
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* @type {ol.Color}
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*/
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this.clearColor_ = new ol.Color(1, 1, 1, 1);
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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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* uBrightness: WebGLUniformLocation,
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* uContrast: WebGLUniformLocation,
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* uHue: WebGLUniformLocation,
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* uMatrix: WebGLUniformLocation,
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* uOpacity: WebGLUniformLocation,
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* uSaturation: 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 {Object.<number, WebGLShader>}
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*/
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this.shaderCache_ = {};
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/**
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* @private
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* @type {Object.<string, WebGLProgram>}
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*/
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this.programCache_ = {};
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/**
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* @private
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* @type {Object.<string, ol.renderer.webgl.TextureCacheEntry>}
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*/
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this.textureCache_ = {};
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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_ = ol.renderer.webgl.map.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_ = ol.renderer.webgl.map.shader.Vertex.getInstance();
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/**
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* @private
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* @type {Object.<number, null|number>}
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*/
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this.layerRendererChangeListenKeys_ = {};
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this.initializeGL_();
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};
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goog.inherits(ol.renderer.webgl.Map, ol.renderer.Map);
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/**
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* @inheritDoc
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*/
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ol.renderer.webgl.Map.prototype.addLayer = function(layer) {
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goog.base(this, 'addLayer', layer);
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if (layer.getVisible()) {
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this.getMap().render();
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}
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};
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/**
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* @param {Image} image Image.
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* @param {number} magFilter Mag filter.
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* @param {number} minFilter Min filter.
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*/
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ol.renderer.webgl.Map.prototype.bindImageTexture =
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function(image, magFilter, minFilter) {
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var gl = this.getGL();
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var imageKey = image.src;
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var textureCacheEntry = this.textureCache_[imageKey];
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if (goog.isDef(textureCacheEntry)) {
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gl.bindTexture(goog.webgl.TEXTURE_2D, textureCacheEntry.texture);
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if (textureCacheEntry.magFilter != magFilter) {
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gl.texParameteri(
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goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MAG_FILTER, magFilter);
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textureCacheEntry.magFilter = magFilter;
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}
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if (textureCacheEntry.minFilter != minFilter) {
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gl.texParameteri(
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goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MAG_FILTER, minFilter);
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textureCacheEntry.minFilter = minFilter;
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}
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} else {
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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, goog.webgl.RGBA,
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goog.webgl.UNSIGNED_BYTE, image);
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gl.texParameteri(
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goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MAG_FILTER, magFilter);
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gl.texParameteri(
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goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_MIN_FILTER, minFilter);
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gl.texParameteri(goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_S,
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goog.webgl.CLAMP_TO_EDGE);
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gl.texParameteri(goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_T,
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goog.webgl.CLAMP_TO_EDGE);
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this.textureCache_[imageKey] = {
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texture: texture,
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magFilter: magFilter,
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minFilter: minFilter
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};
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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.Map.prototype.canRotate = goog.functions.TRUE;
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/**
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* @inheritDoc
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*/
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ol.renderer.webgl.Map.prototype.createLayerRenderer = function(layer) {
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var gl = this.getGL();
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if (layer instanceof ol.layer.TileLayer) {
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return new ol.renderer.webgl.TileLayer(this, layer);
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} else {
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goog.asserts.assert(false);
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return null;
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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.Map.prototype.disposeInternal = function() {
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var gl = this.getGL();
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if (!gl.isContextLost()) {
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goog.object.forEach(this.programCache_, function(program) {
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gl.deleteProgram(program);
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});
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goog.object.forEach(this.shaderCache_, function(shader) {
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gl.deleteShader(shader);
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});
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goog.object.forEach(this.textureCache_, function(textureCacheEntry) {
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gl.deleteTexture(textureCacheEntry.texture);
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});
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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 {WebGLRenderingContext} GL.
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*/
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ol.renderer.webgl.Map.prototype.getGL = function() {
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return this.gl_;
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};
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/**
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* @param {ol.renderer.webgl.FragmentShader} fragmentShaderObject
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* Fragment shader.
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* @param {ol.renderer.webgl.VertexShader} vertexShaderObject Vertex shader.
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* @return {WebGLProgram} Program.
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*/
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ol.renderer.webgl.Map.prototype.getProgram = function(
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fragmentShaderObject, vertexShaderObject) {
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var programKey =
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goog.getUid(fragmentShaderObject) + '/' + goog.getUid(vertexShaderObject);
|
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if (programKey in this.programCache_) {
|
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return this.programCache_[programKey];
|
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} else {
|
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var gl = this.getGL();
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var program = gl.createProgram();
|
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gl.attachShader(program, this.getShader(fragmentShaderObject));
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gl.attachShader(program, this.getShader(vertexShaderObject));
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gl.linkProgram(program);
|
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if (goog.DEBUG) {
|
||||
if (!gl.getProgramParameter(program, goog.webgl.LINK_STATUS) &&
|
||||
!gl.isContextLost()) {
|
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this.logger.severe(gl.getProgramInfoLog(program));
|
||||
goog.asserts.assert(
|
||||
gl.getProgramParameter(program, goog.webgl.LINK_STATUS));
|
||||
}
|
||||
}
|
||||
this.programCache_[programKey] = program;
|
||||
return program;
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @param {ol.renderer.webgl.Shader} shaderObject Shader object.
|
||||
* @return {WebGLShader} Shader.
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.getShader = function(shaderObject) {
|
||||
var shaderKey = goog.getUid(shaderObject);
|
||||
if (shaderKey in this.shaderCache_) {
|
||||
return this.shaderCache_[shaderKey];
|
||||
} else {
|
||||
var gl = this.getGL();
|
||||
var shader = gl.createShader(shaderObject.getType());
|
||||
gl.shaderSource(shader, shaderObject.getSource());
|
||||
gl.compileShader(shader);
|
||||
if (goog.DEBUG) {
|
||||
if (!gl.getShaderParameter(shader, goog.webgl.COMPILE_STATUS) &&
|
||||
!gl.isContextLost()) {
|
||||
this.logger.severe(gl.getShaderInfoLog(shader));
|
||||
goog.asserts.assert(
|
||||
gl.getShaderParameter(shader, goog.webgl.COMPILE_STATUS));
|
||||
}
|
||||
}
|
||||
this.shaderCache_[shaderKey] = shader;
|
||||
return shader;
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleBackgroundColorChanged = function() {
|
||||
var backgroundColor = this.getMap().getBackgroundColor();
|
||||
this.clearColor_ = new ol.Color(
|
||||
backgroundColor.r / 255,
|
||||
backgroundColor.g / 255,
|
||||
backgroundColor.b / 255,
|
||||
backgroundColor.a / 255);
|
||||
this.getMap().render();
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleCenterChanged = function() {
|
||||
goog.base(this, 'handleCenterChanged');
|
||||
this.getMap().render();
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @param {goog.events.Event} event Event.
|
||||
* @protected
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleLayerRendererChange = function(event) {
|
||||
this.getMap().render();
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleResolutionChanged = function() {
|
||||
goog.base(this, 'handleResolutionChanged');
|
||||
this.getMap().render();
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleRotationChanged = function() {
|
||||
goog.base(this, 'handleRotationChanged');
|
||||
this.getMap().render();
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleSizeChanged = function() {
|
||||
goog.base(this, 'handleSizeChanged');
|
||||
this.getMap().render();
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @param {goog.events.Event} event Event.
|
||||
* @protected
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleWebGLContextLost = function(event) {
|
||||
if (goog.DEBUG) {
|
||||
this.logger.info('WebGLContextLost');
|
||||
}
|
||||
event.preventDefault();
|
||||
this.locations_ = null;
|
||||
this.arrayBuffer_ = null;
|
||||
this.shaderCache_ = {};
|
||||
this.programCache_ = {};
|
||||
this.textureCache_ = {};
|
||||
goog.object.forEach(this.layerRenderers, function(layerRenderer) {
|
||||
layerRenderer.handleWebGLContextLost();
|
||||
});
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @protected
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.handleWebGLContextResourced = function() {
|
||||
if (goog.DEBUG) {
|
||||
this.logger.info('WebGLContextResourced');
|
||||
}
|
||||
this.initializeGL_();
|
||||
this.getMap().render();
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @private
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.initializeGL_ = function() {
|
||||
var gl = this.gl_;
|
||||
gl.activeTexture(goog.webgl.TEXTURE0);
|
||||
gl.blendFunc(goog.webgl.SRC_ALPHA, goog.webgl.ONE_MINUS_SRC_ALPHA);
|
||||
gl.disable(goog.webgl.CULL_FACE);
|
||||
gl.disable(goog.webgl.DEPTH_TEST);
|
||||
gl.disable(goog.webgl.SCISSOR_TEST);
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @param {Image} image Image.
|
||||
* @return {boolean} Is image texture loaded.
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.isImageTextureLoaded = function(image) {
|
||||
return image.src in this.textureCache_;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.removeLayer = function(layer) {
|
||||
goog.base(this, 'removeLayer', layer);
|
||||
if (layer.getVisible()) {
|
||||
this.getMap().render();
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.removeLayerRenderer = function(layer) {
|
||||
var layerRenderer = goog.base(this, 'removeLayerRenderer', layer);
|
||||
if (!goog.isNull(layerRenderer)) {
|
||||
var layerKey = goog.getUid(layer);
|
||||
goog.events.unlistenByKey(this.layerRendererChangeListenKeys_[layerKey]);
|
||||
delete this.layerRendererChangeListenKeys_[layerKey];
|
||||
}
|
||||
return layerRenderer;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.render = function() {
|
||||
|
||||
if (!this.getMap().isDef()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
var size = /** @type {ol.Size} */ this.getMap().getSize();
|
||||
if (!this.canvasSize_.equals(size)) {
|
||||
this.canvas_.width = size.width;
|
||||
this.canvas_.height = size.height;
|
||||
this.canvasSize_ = size;
|
||||
}
|
||||
|
||||
var animate = goog.base(this, 'render');
|
||||
|
||||
var gl = this.getGL();
|
||||
|
||||
gl.bindFramebuffer(goog.webgl.FRAMEBUFFER, null);
|
||||
|
||||
gl.clearColor(this.clearColor_.r, this.clearColor_.g, this.clearColor_.b,
|
||||
this.clearColor_.a);
|
||||
gl.clear(goog.webgl.COLOR_BUFFER_BIT);
|
||||
gl.enable(goog.webgl.BLEND);
|
||||
gl.viewport(0, 0, size.width, size.height);
|
||||
|
||||
var program = this.getProgram(this.fragmentShader_, this.vertexShader_);
|
||||
gl.useProgram(program);
|
||||
if (goog.isNull(this.locations_)) {
|
||||
this.locations_ = {
|
||||
aPosition: gl.getAttribLocation(program, 'aPosition'),
|
||||
aTexCoord: gl.getAttribLocation(program, 'aTexCoord'),
|
||||
uBrightness: gl.getUniformLocation(program, 'uBrightness'),
|
||||
uContrast: gl.getUniformLocation(program, 'uContrast'),
|
||||
uHue: gl.getUniformLocation(program, 'uHue'),
|
||||
uMatrix: gl.getUniformLocation(program, 'uMatrix'),
|
||||
uOpacity: gl.getUniformLocation(program, 'uOpacity'),
|
||||
uSaturation: gl.getUniformLocation(program, 'uSaturation'),
|
||||
uTexture: gl.getUniformLocation(program, 'uTexture')
|
||||
};
|
||||
}
|
||||
|
||||
if (goog.isNull(this.arrayBuffer_)) {
|
||||
var arrayBuffer = gl.createBuffer();
|
||||
gl.bindBuffer(goog.webgl.ARRAY_BUFFER, arrayBuffer);
|
||||
gl.bufferData(goog.webgl.ARRAY_BUFFER, new Float32Array([
|
||||
-1, -1, 0, 0,
|
||||
1, -1, 1, 0,
|
||||
-1, 1, 0, 1,
|
||||
1, 1, 1, 1
|
||||
]), goog.webgl.STATIC_DRAW);
|
||||
this.arrayBuffer_ = arrayBuffer;
|
||||
} else {
|
||||
gl.bindBuffer(goog.webgl.ARRAY_BUFFER, this.arrayBuffer_);
|
||||
}
|
||||
|
||||
gl.enableVertexAttribArray(this.locations_.aPosition);
|
||||
gl.vertexAttribPointer(
|
||||
this.locations_.aPosition, 2, goog.webgl.FLOAT, false, 16, 0);
|
||||
gl.enableVertexAttribArray(this.locations_.aTexCoord);
|
||||
gl.vertexAttribPointer(
|
||||
this.locations_.aTexCoord, 2, goog.webgl.FLOAT, false, 16, 8);
|
||||
gl.uniform1i(this.locations_.uTexture, 0);
|
||||
|
||||
this.forEachReadyVisibleLayer(function(layer, layerRenderer) {
|
||||
gl.uniformMatrix4fv(
|
||||
this.locations_.uMatrix, false, layerRenderer.getMatrix());
|
||||
gl.uniform1f(this.locations_.uBrightness, layer.getBrightness());
|
||||
gl.uniform1f(this.locations_.uContrast, layer.getContrast());
|
||||
gl.uniform1f(this.locations_.uHue, layer.getHue());
|
||||
gl.uniform1f(this.locations_.uOpacity, layer.getOpacity());
|
||||
gl.uniform1f(this.locations_.uSaturation, layer.getSaturation());
|
||||
gl.bindTexture(goog.webgl.TEXTURE_2D, layerRenderer.getTexture());
|
||||
gl.drawArrays(goog.webgl.TRIANGLE_STRIP, 0, 4);
|
||||
}, this);
|
||||
|
||||
return animate;
|
||||
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.renderer.webgl.Map.prototype.setLayerRenderer = function(
|
||||
layer, layerRenderer) {
|
||||
goog.base(this, 'setLayerRenderer', layer, layerRenderer);
|
||||
var layerKey = goog.getUid(layer);
|
||||
this.layerRendererChangeListenKeys_[layerKey] = goog.events.listen(
|
||||
layerRenderer, goog.events.EventType.CHANGE,
|
||||
this.handleLayerRendererChange, false, this);
|
||||
};
|
||||
Reference in New Issue
Block a user