src/viewer/scene/webgl/Renderer.js
import {FrameContext} from './FrameContext.js';
import {RenderBuffer} from './RenderBuffer.js';
import {math} from '../math/math.js';
import {stats} from '../stats.js';
import {WEBGL_INFO} from '../webglInfo.js';
import {Map} from "../utils/Map.js";
import {PickResult} from "./PickResult.js";
import {OcclusionTester} from "./occlusion/OcclusionTester.js";
import {SAOOcclusionRenderer} from "./sao/SAOOcclusionRenderer.js";
import {SAOBlendRenderer} from "./sao/SAOBlendRenderer.js";
import {SAOBlurRenderer} from "./sao/SAOBlurRenderer.js";
import {createRTCViewMat} from "../math/rtcCoords.js";
/**
* @private
*/
const Renderer = function (scene, options) {
options = options || {};
const frameCtx = new FrameContext(scene);
const canvas = scene.canvas.canvas;
const gl = scene.canvas.gl;
const canvasTransparent = (!!options.transparent);
const alphaDepthMask = options.alphaDepthMask;
const pickIDs = new Map({});
let drawableTypeInfo = {};
let drawables = {};
let drawableListDirty = true;
let stateSortDirty = true;
let imageDirty = true;
let shadowsDirty = true;
const saoDepthBuffer = new RenderBuffer(canvas, gl);
const occlusionBuffer1 = new RenderBuffer(canvas, gl);
const occlusionBuffer2 = new RenderBuffer(canvas, gl);
const pickBuffer = new RenderBuffer(canvas, gl);
const snapshotBuffer = new RenderBuffer(canvas, gl);
let snapshotBound = false;
const bindOutputFrameBuffer = null;
const unbindOutputFrameBuffer = null;
const saoOcclusionRenderer = new SAOOcclusionRenderer(scene);
const saoBlurRenderer = new SAOBlurRenderer(scene);
const saoBlendRenderer = new SAOBlendRenderer(scene);
this._occlusionTester = null; // Lazy-created in #addMarker()
this.needStateSort = function () {
stateSortDirty = true;
};
this.shadowsDirty = function () {
shadowsDirty = true;
};
this.imageDirty = function () {
imageDirty = true;
};
this.webglContextLost = function () {
};
this.webglContextRestored = function (gl) {
pickBuffer.webglContextRestored(gl);
snapshotBuffer.webglContextRestored(gl);
saoDepthBuffer.webglContextRestored(gl);
occlusionBuffer1.webglContextRestored(gl);
occlusionBuffer2.webglContextRestored(gl);
saoOcclusionRenderer.init();
saoBlurRenderer.init();
saoBlendRenderer.init();
imageDirty = true;
};
/**
* Inserts a drawable into this renderer.
* @private
*/
this.addDrawable = function (id, drawable) {
const type = drawable.type;
if (!type) {
console.error("Renderer#addDrawable() : drawable with ID " + id + " has no 'type' - ignoring");
return;
}
let drawableInfo = drawableTypeInfo[type];
if (!drawableInfo) {
drawableInfo = {
type: drawable.type,
count: 0,
isStateSortable: drawable.isStateSortable,
stateSortCompare: drawable.stateSortCompare,
drawableMap: {},
drawableListPreCull: [],
drawableList: []
};
drawableTypeInfo[type] = drawableInfo;
}
drawableInfo.count++;
drawableInfo.drawableMap[id] = drawable;
drawables[id] = drawable;
drawableListDirty = true;
};
/**
* Removes a drawable from this renderer.
* @private
*/
this.removeDrawable = function (id) {
const drawable = drawables[id];
if (!drawable) {
console.error("Renderer#removeDrawable() : drawable not found with ID " + id + " - ignoring");
return;
}
const type = drawable.type;
const drawableInfo = drawableTypeInfo[type];
if (--drawableInfo.count <= 0) {
delete drawableTypeInfo[type];
} else {
delete drawableInfo.drawableMap[id];
}
delete drawables[id];
drawableListDirty = true;
};
/**
* Gets a unique pick ID for the given Pickable. A Pickable can be a {@link Mesh} or a {@link PerformanceMesh}.
* @returns {Number} New pick ID.
*/
this.getPickID = function (entity) {
return pickIDs.addItem(entity);
};
/**
* Released a pick ID for reuse.
* @param {Number} pickID Pick ID to release.
*/
this.putPickID = function (pickID) {
pickIDs.removeItem(pickID);
};
/**
* Clears the canvas.
* @private
*/
this.clear = function (params) {
params = params || {};
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
if (canvasTransparent) {
gl.clearColor(0, 0, 0, 0);
} else {
const color = params.ambientColor || scene.canvas.backgroundColor || this.lights.getAmbientColor();
gl.clearColor(color[0], color[1], color[2], 1.0);
}
if (bindOutputFrameBuffer) {
bindOutputFrameBuffer(params.pass);
}
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT);
if (unbindOutputFrameBuffer) {
unbindOutputFrameBuffer(params.pass);
}
};
/**
* Renders inserted drawables.
* @private
*/
this.render = function (params) {
params = params || {};
if (params.force) {
imageDirty = true;
}
updateDrawlist();
if (imageDirty) {
draw(params);
stats.frame.frameCount++;
imageDirty = false;
}
};
function updateDrawlist() { // Prepares state-sorted array of drawables from maps of inserted drawables
if (drawableListDirty) {
buildDrawableList();
drawableListDirty = false;
stateSortDirty = true;
}
if (stateSortDirty) {
sortDrawableList();
stateSortDirty = false;
imageDirty = true;
}
if (imageDirty) { // Image is usually dirty because the camera moved
cullDrawableList();
}
}
function buildDrawableList() {
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
const drawableMap = drawableInfo.drawableMap;
const drawableListPreCull = drawableInfo.drawableListPreCull;
let lenDrawableList = 0;
for (let id in drawableMap) {
if (drawableMap.hasOwnProperty(id)) {
drawableListPreCull[lenDrawableList++] = drawableMap[id];
}
}
drawableListPreCull.length = lenDrawableList;
}
}
}
function sortDrawableList() {
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
if (drawableInfo.isStateSortable) {
drawableInfo.drawableListPreCull.sort(drawableInfo.stateSortCompare);
}
}
}
}
function cullDrawableList() {
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
const drawableListPreCull = drawableInfo.drawableListPreCull;
const drawableList = drawableInfo.drawableList;
let lenDrawableList = 0;
for (let i = 0, len = drawableListPreCull.length; i < len; i++) {
const drawable = drawableListPreCull[i];
drawable.rebuildRenderFlags();
if (!drawable.renderFlags.culled) {
drawableList[lenDrawableList++] = drawable;
}
}
drawableList.length = lenDrawableList;
}
}
}
function draw(params) {
if (WEBGL_INFO.SUPPORTED_EXTENSIONS["OES_element_index_uint"]) { // In case context lost/recovered
gl.getExtension("OES_element_index_uint");
}
const sao = scene.sao;
if (sao.possible) {
drawSAOBuffers(params);
}
drawShadowMaps();
drawColor(params);
}
function drawSAOBuffers(params) {
const sao = scene.sao;
// Render depth buffer
saoDepthBuffer.bind();
saoDepthBuffer.clear();
drawDepth(params);
saoDepthBuffer.unbind();
// Render occlusion buffer
occlusionBuffer1.bind();
occlusionBuffer1.clear();
saoOcclusionRenderer.render(saoDepthBuffer.getTexture(), null);
occlusionBuffer1.unbind();
if (sao.blur) {
// Horizontally blur occlusion buffer 1 into occlusion buffer 2
occlusionBuffer2.bind();
occlusionBuffer2.clear();
saoBlurRenderer.render(saoDepthBuffer.getTexture(), occlusionBuffer1.getTexture(), 0);
occlusionBuffer2.unbind();
// Vertically blur occlusion buffer 2 back into occlusion buffer 1
occlusionBuffer1.bind();
occlusionBuffer1.clear();
saoBlurRenderer.render(saoDepthBuffer.getTexture(), occlusionBuffer2.getTexture(), 1);
occlusionBuffer1.unbind();
}
}
function drawDepth(params) {
frameCtx.reset();
frameCtx.pass = params.pass;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
gl.clearColor(0, 0, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.frontFace(gl.CCW);
gl.enable(gl.CULL_FACE);
gl.depthMask(true);
if (params.clear !== false) {
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT);
}
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
const drawableList = drawableInfo.drawableList;
for (let i = 0, len = drawableList.length; i < len; i++) {
const drawable = drawableList[i];
if (drawable.culled === true || drawable.visible === false || !drawable.drawDepth) {
continue;
}
if (drawable.renderFlags.normalFillOpaque) {
drawable.drawDepth(frameCtx);
}
}
}
}
// const numVertexAttribs = WEBGL_INFO.MAX_VERTEX_ATTRIBS; // Fixes https://github.com/xeokit/xeokit-sdk/issues/174
// for (let ii = 0; ii < numVertexAttribs; ii++) {
// gl.disableVertexAttribArray(ii);
// }
}
function drawShadowMaps() {
let lights = scene._lightsState.lights;
for (let i = 0, len = lights.length; i < len; i++) {
const light = lights[i];
if (!light.castsShadow) {
continue;
}
drawShadowMap(light);
}
// const numVertexAttribs = WEBGL_INFO.MAX_VERTEX_ATTRIBS; // Fixes https://github.com/xeokit/xeokit-sdk/issues/174
// for (let ii = 0; ii < numVertexAttribs; ii++) {
// gl.disableVertexAttribArray(ii);
// }
//
shadowsDirty = false;
}
function drawShadowMap(light) {
const castsShadow = light.castsShadow;
if (!castsShadow) {
return;
}
const shadowRenderBuf = light.getShadowRenderBuf();
if (!shadowRenderBuf) {
return;
}
shadowRenderBuf.bind();
frameCtx.reset();
frameCtx.backfaces = true;
frameCtx.frontface = true;
frameCtx.shadowViewMatrix = light.getShadowViewMatrix();
frameCtx.shadowProjMatrix = light.getShadowProjMatrix();
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
gl.clearColor(0, 0, 0, 1);
gl.enable(gl.DEPTH_TEST);
gl.disable(gl.BLEND);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
const drawableList = drawableInfo.drawableList;
for (let i = 0, len = drawableList.length; i < len; i++) {
const drawable = drawableList[i];
if (drawable.visible === false || !drawable.castsShadow || !drawable.drawShadow) {
continue;
}
if (drawable.renderFlags.normalFillOpaque) { // Transparent objects don't cast shadows (yet)
drawable.drawShadow(frameCtx);
}
}
}
}
shadowRenderBuf.unbind();
}
const drawColor = (function () { // Draws the drawables in drawableListSorted
const normalDrawSAOBin = [];
const normalEdgesOpaqueBin = [];
const normalFillTransparentBin = [];
const normalEdgesTransparentBin = [];
const xrayedFillOpaqueBin = [];
const xrayEdgesOpaqueBin = [];
const xrayedFillTransparentBin = [];
const xrayEdgesTransparentBin = [];
const highlightedFillOpaqueBin = [];
const highlightedEdgesOpaqueBin = [];
const highlightedFillTransparentBin = [];
const highlightedEdgesTransparentBin = [];
const selectedFillOpaqueBin = [];
const selectedEdgesOpaqueBin = [];
const selectedFillTransparentBin = [];
const selectedEdgesTransparentBin = [];
return function (params) {
const ambientColor = scene._lightsState.getAmbientColor();
frameCtx.reset();
frameCtx.pass = params.pass;
frameCtx.withSAO = false;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
if (canvasTransparent) {
gl.clearColor(0, 0, 0, 0);
} else {
const clearColor = scene.canvas.backgroundColor || ambientColor;
gl.clearColor(clearColor[0], clearColor[1], clearColor[2], 1.0);
}
gl.enable(gl.DEPTH_TEST);
gl.frontFace(gl.CCW);
gl.enable(gl.CULL_FACE);
gl.depthMask(true);
gl.lineWidth(1);
frameCtx.lineWidth = 1;
const saoPossible = scene.sao.possible;
frameCtx.occlusionTexture = saoPossible ? occlusionBuffer1.getTexture() : null;
let i;
let len;
let drawable;
const startTime = Date.now();
if (bindOutputFrameBuffer) {
bindOutputFrameBuffer(params.pass);
}
if (params.clear !== false) {
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT);
}
let normalDrawSAOBinLen = 0;
let normalEdgesOpaqueBinLen = 0;
let normalFillTransparentBinLen = 0;
let normalEdgesTransparentBinLen = 0;
let xrayedFillOpaqueBinLen = 0;
let xrayEdgesOpaqueBinLen = 0;
let xrayedFillTransparentBinLen = 0;
let xrayEdgesTransparentBinLen = 0;
let highlightedFillOpaqueBinLen = 0;
let highlightedEdgesOpaqueBinLen = 0;
let highlightedFillTransparentBinLen = 0;
let highlightedEdgesTransparentBinLen = 0;
let selectedFillOpaqueBinLen = 0;
let selectedEdgesOpaqueBinLen = 0;
let selectedFillTransparentBinLen = 0;
let selectedEdgesTransparentBinLen = 0;
//------------------------------------------------------------------------------------------------------
// Render normal opaque solids, defer others to bins to render after
//------------------------------------------------------------------------------------------------------
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
const drawableList = drawableInfo.drawableList;
for (i = 0, len = drawableList.length; i < len; i++) {
drawable = drawableList[i];
if (drawable.culled === true || drawable.visible === false) {
continue;
}
const renderFlags = drawable.renderFlags;
if (renderFlags.normalFillOpaque) {
if (saoPossible && drawable.saoEnabled) {
normalDrawSAOBin[normalDrawSAOBinLen++] = drawable;
} else {
drawable.drawNormalFillOpaque(frameCtx);
}
}
if (renderFlags.normalEdgesOpaque) {
normalEdgesOpaqueBin[normalEdgesOpaqueBinLen++] = drawable;
}
if (renderFlags.normalFillTransparent) {
normalFillTransparentBin[normalFillTransparentBinLen++] = drawable;
}
if (renderFlags.normalEdgesTransparent) {
normalEdgesTransparentBin[normalEdgesTransparentBinLen++] = drawable;
}
if (renderFlags.xrayedFillTransparent) {
xrayedFillTransparentBin[xrayedFillTransparentBinLen++] = drawable;
}
if (renderFlags.xrayedFillOpaque) {
xrayedFillOpaqueBin[xrayedFillOpaqueBinLen++] = drawable;
}
if (renderFlags.xrayedEdgesTransparent) {
xrayEdgesTransparentBin[xrayEdgesTransparentBinLen++] = drawable;
}
if (renderFlags.xrayedEdgesOpaque) {
xrayEdgesOpaqueBin[xrayEdgesOpaqueBinLen++] = drawable;
}
if (renderFlags.highlightedFillTransparent) {
highlightedFillTransparentBin[highlightedFillTransparentBinLen++] = drawable;
}
if (renderFlags.highlightedFillOpaque) {
highlightedFillOpaqueBin[highlightedFillOpaqueBinLen++] = drawable;
}
if (renderFlags.highlightedEdgesTransparent) {
highlightedEdgesTransparentBin[highlightedEdgesTransparentBinLen++] = drawable;
}
if (renderFlags.highlightedEdgesOpaque) {
highlightedEdgesOpaqueBin[highlightedEdgesOpaqueBinLen++] = drawable;
}
if (renderFlags.selectedFillTransparent) {
selectedFillTransparentBin[selectedFillTransparentBinLen++] = drawable;
}
if (renderFlags.selectedFillOpaque) {
selectedFillOpaqueBin[selectedFillOpaqueBinLen++] = drawable;
}
if (renderFlags.selectedEdgesTransparent) {
selectedEdgesTransparentBin[selectedEdgesTransparentBinLen++] = drawable;
}
if (renderFlags.selectedEdgesOpaque) {
selectedEdgesOpaqueBin[selectedEdgesOpaqueBinLen++] = drawable;
}
}
}
}
//------------------------------------------------------------------------------------------------------
// Render deferred bins
//------------------------------------------------------------------------------------------------------
if (normalDrawSAOBinLen > 0) {
frameCtx.withSAO = true;
for (i = 0; i < normalDrawSAOBinLen; i++) {
normalDrawSAOBin[i].drawNormalFillOpaque(frameCtx);
}
}
if (normalEdgesOpaqueBinLen > 0) {
for (i = 0; i < normalEdgesOpaqueBinLen; i++) {
normalEdgesOpaqueBin[i].drawNormalEdgesOpaque(frameCtx);
}
}
if (xrayedFillOpaqueBinLen > 0) {
for (i = 0; i < xrayedFillOpaqueBinLen; i++) {
xrayedFillOpaqueBin[i].drawXRayedFillOpaque(frameCtx);
}
}
if (xrayEdgesOpaqueBinLen > 0) {
for (i = 0; i < xrayEdgesOpaqueBinLen; i++) {
xrayEdgesOpaqueBin[i].drawXRayedEdgesOpaque(frameCtx);
}
}
if (xrayedFillTransparentBinLen > 0 || xrayEdgesTransparentBinLen > 0 || normalFillTransparentBinLen > 0 || normalEdgesTransparentBinLen > 0) {
gl.enable(gl.CULL_FACE);
gl.enable(gl.BLEND);
if (canvasTransparent) {
gl.blendEquation(gl.FUNC_ADD);
gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
} else {
gl.blendEquation(gl.FUNC_ADD);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
}
frameCtx.backfaces = false;
if (!alphaDepthMask) {
gl.depthMask(false);
}
if (xrayEdgesTransparentBinLen > 0) {
for (i = 0; i < xrayEdgesTransparentBinLen; i++) {
xrayEdgesTransparentBin[i].drawXRayedEdgesTransparent(frameCtx);
}
}
if (xrayedFillTransparentBinLen > 0) {
for (i = 0; i < xrayedFillTransparentBinLen; i++) {
xrayedFillTransparentBin[i].drawXRayedFillTransparent(frameCtx);
}
}
if (normalFillTransparentBinLen > 0 || normalEdgesTransparentBinLen > 0) {
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
}
if (normalEdgesTransparentBinLen > 0) {
for (i = 0; i < normalEdgesTransparentBinLen; i++) {
drawable = normalEdgesTransparentBin[i];
drawable.drawNormalEdgesTransparent(frameCtx);
}
}
if (normalFillTransparentBinLen > 0) {
for (i = 0; i < normalFillTransparentBinLen; i++) {
drawable = normalFillTransparentBin[i];
drawable.drawNormalFillTransparent(frameCtx);
}
}
gl.disable(gl.BLEND);
if (!alphaDepthMask) {
gl.depthMask(true);
}
}
if (highlightedFillOpaqueBinLen > 0 || highlightedEdgesOpaqueBinLen > 0) {
frameCtx.lastProgramId = null;
gl.clear(gl.DEPTH_BUFFER_BIT);
if (highlightedEdgesOpaqueBinLen > 0) {
for (i = 0; i < highlightedEdgesOpaqueBinLen; i++) {
highlightedEdgesOpaqueBin[i].drawHighlightedEdgesOpaque(frameCtx);
}
}
if (highlightedFillOpaqueBinLen > 0) {
for (i = 0; i < highlightedFillOpaqueBinLen; i++) {
highlightedFillOpaqueBin[i].drawHighlightedFillOpaque(frameCtx);
}
}
}
if (highlightedFillTransparentBinLen > 0 || highlightedEdgesTransparentBinLen > 0 || highlightedFillOpaqueBinLen > 0) {
frameCtx.lastProgramId = null;
gl.clear(gl.DEPTH_BUFFER_BIT);
gl.enable(gl.CULL_FACE);
gl.enable(gl.BLEND);
if (canvasTransparent) {
gl.blendEquation(gl.FUNC_ADD);
gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
} else {
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
}
if (highlightedEdgesTransparentBinLen > 0) {
for (i = 0; i < highlightedEdgesTransparentBinLen; i++) {
highlightedEdgesTransparentBin[i].drawHighlightedEdgesTransparent(frameCtx);
}
}
if (highlightedFillTransparentBinLen > 0) {
for (i = 0; i < highlightedFillTransparentBinLen; i++) {
highlightedFillTransparentBin[i].drawHighlightedFillTransparent(frameCtx);
}
}
gl.disable(gl.BLEND);
}
if (selectedFillOpaqueBinLen > 0 || selectedEdgesOpaqueBinLen > 0) {
frameCtx.lastProgramId = null;
gl.clear(gl.DEPTH_BUFFER_BIT);
if (selectedEdgesOpaqueBinLen > 0) {
for (i = 0; i < selectedEdgesOpaqueBinLen; i++) {
selectedEdgesOpaqueBin[i].drawSelectedEdgesOpaque(frameCtx);
}
}
if (selectedFillOpaqueBinLen > 0) {
for (i = 0; i < selectedFillOpaqueBinLen; i++) {
selectedFillOpaqueBin[i].drawSelectedFillOpaque(frameCtx);
}
}
}
if (selectedFillTransparentBinLen > 0 || selectedEdgesTransparentBinLen > 0) {
frameCtx.lastProgramId = null;
gl.clear(gl.DEPTH_BUFFER_BIT);
gl.enable(gl.CULL_FACE);
gl.enable(gl.BLEND);
if (canvasTransparent) {
gl.blendEquation(gl.FUNC_ADD);
gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
} else {
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
}
if (selectedEdgesTransparentBinLen > 0) {
for (i = 0; i < selectedEdgesTransparentBinLen; i++) {
selectedEdgesTransparentBin[i].drawSelectedEdgesTransparent(frameCtx);
}
}
if (selectedFillTransparentBinLen > 0) {
for (i = 0; i < selectedFillTransparentBinLen; i++) {
selectedFillTransparentBin[i].drawSelectedFillTransparent(frameCtx);
}
}
gl.disable(gl.BLEND);
}
const endTime = Date.now();
const frameStats = stats.frame;
frameStats.renderTime = (endTime - startTime) / 1000.0;
frameStats.drawElements = frameCtx.drawElements;
frameStats.drawElements = frameCtx.drawElements;
frameStats.useProgram = frameCtx.useProgram;
frameStats.bindTexture = frameCtx.bindTexture;
frameStats.bindArray = frameCtx.bindArray;
const numTextureUnits = WEBGL_INFO.MAX_TEXTURE_UNITS;
for (let ii = 0; ii < numTextureUnits; ii++) {
gl.activeTexture(gl.TEXTURE0 + ii);
}
gl.bindTexture(gl.TEXTURE_CUBE_MAP, null);
gl.bindTexture(gl.TEXTURE_2D, null);
const numVertexAttribs = WEBGL_INFO.MAX_VERTEX_ATTRIBS; // Fixes https://github.com/xeokit/xeokit-sdk/issues/174
for (let ii = 0; ii < numVertexAttribs; ii++) {
gl.disableVertexAttribArray(ii);
}
if (unbindOutputFrameBuffer) {
unbindOutputFrameBuffer(params.pass);
}
};
})();
/**
* Picks an Entity.
* @private
*/
this.pick = (function () {
const tempVec3a = math.vec3();
const tempMat4a = math.mat4();
const tempMat4b = math.mat4();
const up = math.vec3([0, 1, 0]);
const _pickResult = new PickResult();
return function (params, pickResult = _pickResult) {
pickResult.reset();
updateDrawlist();
if (WEBGL_INFO.SUPPORTED_EXTENSIONS["OES_element_index_uint"]) { // In case context lost/recovered
gl.getExtension("OES_element_index_uint");
}
let canvasX;
let canvasY;
let origin;
let direction;
let look;
let pickViewMatrix = null;
let pickProjMatrix = null;
pickResult.pickSurface = params.pickSurface;
if (params.canvasPos) {
canvasX = params.canvasPos[0];
canvasY = params.canvasPos[1];
pickViewMatrix = scene.camera.viewMatrix;
pickProjMatrix = scene.camera.projMatrix;
pickResult.canvasPos = params.canvasPos;
} else {
// Picking with arbitrary World-space ray
// Align camera along ray and fire ray through center of canvas
const pickFrustumMatrix = math.frustumMat4(-1, 1, -1, 1, 0.1, scene.camera.project.far, tempMat4a);
if (params.matrix) {
pickViewMatrix = params.matrix;
pickProjMatrix = pickFrustumMatrix;
} else {
origin = params.origin || math.vec3([0, 0, 0]);
direction = params.direction || math.vec3([0, 0, 1]);
look = math.addVec3(origin, direction, tempVec3a);
pickViewMatrix = math.lookAtMat4v(origin, look, up, tempMat4b);
pickProjMatrix = pickFrustumMatrix;
pickResult.origin = origin;
pickResult.direction = direction;
}
canvasX = canvas.clientWidth * 0.5;
canvasY = canvas.clientHeight * 0.5;
}
pickBuffer.bind();
const pickable = pickPickable(canvasX, canvasY, pickViewMatrix, pickProjMatrix, params);
if (!pickable) {
pickBuffer.unbind();
return null;
}
const pickedEntity = (pickable.delegatePickedEntity) ? pickable.delegatePickedEntity() : pickable;
if (!pickedEntity) {
return null;
}
if (params.pickSurface) {
if (pickable.canPickTriangle && pickable.canPickTriangle()) {
pickTriangle(pickable, canvasX, canvasY, pickViewMatrix, pickProjMatrix, pickResult);
pickable.pickTriangleSurface(pickViewMatrix, pickProjMatrix, pickResult);
} else {
if (pickable.canPickWorldPos && pickable.canPickWorldPos()) {
pickWorldPos(pickable, canvasX, canvasY, pickViewMatrix, pickProjMatrix, pickResult);
pickWorldNormal(pickable, canvasX, canvasY, pickViewMatrix, pickProjMatrix, pickResult);
}
}
}
pickBuffer.unbind();
pickResult.entity = pickedEntity;
return pickResult;
};
})();
function pickPickable(canvasX, canvasY, pickViewMatrix, pickProjMatrix, params) {
frameCtx.reset();
frameCtx.backfaces = true;
frameCtx.frontface = true; // "ccw"
frameCtx.pickViewMatrix = pickViewMatrix;
frameCtx.pickProjMatrix = pickProjMatrix;
frameCtx.pickInvisible = !!params.pickInvisible;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
gl.clearColor(0, 0, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.enable(gl.CULL_FACE);
gl.disable(gl.BLEND);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
let i;
let len;
const includeEntityIds = params.includeEntityIds;
const excludeEntityIds = params.excludeEntityIds;
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
const drawableList = drawableInfo.drawableList;
for (i = 0, len = drawableList.length; i < len; i++) {
const drawable = drawableList[i];
if (!drawable.drawPickMesh || drawable.culled === true || (params.pickInvisible !== true && drawable.visible === false) || drawable.pickable === false) {
continue;
}
if (includeEntityIds && !includeEntityIds[drawable.id]) { // TODO: push this logic into drawable
continue;
}
if (excludeEntityIds && excludeEntityIds[drawable.id]) {
continue;
}
drawable.drawPickMesh(frameCtx);
}
}
}
const pix = pickBuffer.read(Math.round(canvasX), Math.round(canvasY));
let pickID = pix[0] + (pix[1] * 256) + (pix[2] * 256 * 256) + (pix[3] * 256 * 256 * 256);
if (pickID < 0) {
return;
}
const pickable = pickIDs.items[pickID];
return pickable;
}
function pickTriangle(pickable, canvasX, canvasY, pickViewMatrix, pickProjMatrix, pickResult) {
if (!pickable.drawPickTriangles) {
return;
}
frameCtx.reset();
frameCtx.backfaces = true;
frameCtx.frontface = true; // "ccw"
frameCtx.pickViewMatrix = pickViewMatrix; // Can be null
frameCtx.pickProjMatrix = pickProjMatrix; // Can be null
// frameCtx.pickInvisible = !!params.pickInvisible;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
gl.clearColor(0, 0, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.enable(gl.CULL_FACE);
gl.disable(gl.BLEND);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
pickable.drawPickTriangles(frameCtx);
const pix = pickBuffer.read(canvasX, canvasY);
let primIndex = pix[0] + (pix[1] * 256) + (pix[2] * 256 * 256) + (pix[3] * 256 * 256 * 256);
primIndex *= 3; // Convert from triangle number to first vertex in indices
pickResult.primIndex = primIndex;
}
const pickWorldPos = (function () {
const tempVec4a = math.vec4();
const tempVec4b = math.vec4();
const tempVec4c = math.vec4();
const tempVec4d = math.vec4();
const tempVec4e = math.vec4();
const tempMat4a = math.mat4();
const tempMat4b = math.mat4();
const tempMat4c = math.mat4();
return function (pickable, canvasX, canvasY, pickViewMatrix, pickProjMatrix, pickResult) {
frameCtx.reset();
frameCtx.backfaces = true;
frameCtx.frontface = true; // "ccw"
frameCtx.pickViewMatrix = pickViewMatrix;
frameCtx.pickProjMatrix = pickProjMatrix;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
gl.clearColor(0, 0, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.enable(gl.CULL_FACE);
gl.disable(gl.BLEND);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
pickable.drawPickDepths(frameCtx); // Draw color-encoded fragment screen-space depths
const pix = pickBuffer.read(Math.round(canvasX), Math.round(canvasY));
const screenZ = unpackDepth(pix); // Get screen-space Z at the given canvas coords
// Calculate clip space coordinates, which will be in range of x=[-1..1] and y=[-1..1], with y=(+1) at top
const x = (canvasX - canvas.width / 2) / (canvas.width / 2);
const y = -(canvasY - canvas.height / 2) / (canvas.height / 2);
const rtcCenter = pickable.rtcCenter;
let pvMat;
if (rtcCenter) {
const rtcPickViewMat = createRTCViewMat(pickViewMatrix, rtcCenter, tempMat4a);
pvMat = math.mulMat4(pickProjMatrix, rtcPickViewMat, tempMat4b);
} else {
pvMat = math.mulMat4(pickProjMatrix, pickViewMatrix, tempMat4b);
}
const pvMatInverse = math.inverseMat4(pvMat, tempMat4c);
tempVec4a[0] = x;
tempVec4a[1] = y;
tempVec4a[2] = -1;
tempVec4a[3] = 1;
let world1 = math.transformVec4(pvMatInverse, tempVec4a);
world1 = math.mulVec4Scalar(world1, 1 / world1[3]);
tempVec4b[0] = x;
tempVec4b[1] = y;
tempVec4b[2] = 1;
tempVec4b[3] = 1;
let world2 = math.transformVec4(pvMatInverse, tempVec4b);
world2 = math.mulVec4Scalar(world2, 1 / world2[3]);
const dir = math.subVec3(world2, world1, tempVec4c);
const worldPos = math.addVec3(world1, math.mulVec4Scalar(dir, screenZ, tempVec4d), tempVec4e);
if (rtcCenter) {
math.addVec3(worldPos, rtcCenter);
}
pickResult.worldPos = worldPos;
}
})();
function unpackDepth(depthZ) {
const vec = [depthZ[0] / 256.0, depthZ[1] / 256.0, depthZ[2] / 256.0, depthZ[3] / 256.0];
const bitShift = [1.0 / (256.0 * 256.0 * 256.0), 1.0 / (256.0 * 256.0), 1.0 / 256.0, 1.0];
return math.dotVec4(vec, bitShift);
}
function pickWorldNormal(pickable, canvasX, canvasY, pickViewMatrix, pickProjMatrix, pickResult) {
frameCtx.reset();
frameCtx.backfaces = true;
frameCtx.frontface = true; // "ccw"
frameCtx.pickViewMatrix = pickViewMatrix;
frameCtx.pickProjMatrix = pickProjMatrix;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
gl.clearColor(0, 0, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.enable(gl.CULL_FACE);
gl.disable(gl.BLEND);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
pickable.drawPickNormals(frameCtx); // Draw color-encoded fragment World-space normals
const pix = pickBuffer.read(Math.round(canvasX), Math.round(canvasY));
const worldNormal = [(pix[0] / 256.0) - 0.5, (pix[1] / 256.0) - 0.5, (pix[2] / 256.0) - 0.5];
math.normalizeVec3(worldNormal);
pickResult.worldNormal = worldNormal;
}
/**
* Adds a {@link Marker} for occlusion testing.
* @param marker
*/
this.addMarker = function (marker) {
this._occlusionTester = this._occlusionTester || new OcclusionTester(scene);
this._occlusionTester.addMarker(marker);
scene.occlusionTestCountdown = 0;
};
/**
* Notifies that a {@link Marker#worldPos} has updated.
* @param marker
*/
this.markerWorldPosUpdated = function (marker) {
this._occlusionTester.markerWorldPosUpdated(marker);
};
/**
* Removes a {@link Marker} from occlusion testing.
* @param marker
*/
this.removeMarker = function (marker) {
this._occlusionTester.removeMarker(marker);
};
/**
* Performs an occlusion test for all added {@link Marker}s, updating
* their {@link Marker#visible} properties accordingly.
*/
this.doOcclusionTest = function () {
if (this._occlusionTester && this._occlusionTester.needOcclusionTest) {
updateDrawlist();
this._occlusionTester.bindRenderBuf();
frameCtx.reset();
frameCtx.backfaces = true;
frameCtx.frontface = true; // "ccw"
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
gl.clearColor(0, 0, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.enable(gl.CULL_FACE);
gl.disable(gl.BLEND);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
for (let type in drawableTypeInfo) {
if (drawableTypeInfo.hasOwnProperty(type)) {
const drawableInfo = drawableTypeInfo[type];
const drawableList = drawableInfo.drawableList;
for (let i = 0, len = drawableList.length; i < len; i++) {
const drawable = drawableList[i];
if (!drawable.drawOcclusion || drawable.culled === true || drawable.visible === false || drawable.pickable === false) { // TODO: Option to exclude transparent?
continue;
}
drawable.drawOcclusion(frameCtx);
}
}
}
this._occlusionTester.drawMarkers(frameCtx);
this._occlusionTester.doOcclusionTest(); // Updates Marker "visible" properties
this._occlusionTester.unbindRenderBuf();
}
};
/**
* Read pixels from the renderer's current output. Performs a force-render first.
* @param pixels
* @param colors
* @param len
* @param opaqueOnly
* @private
*/
this.readPixels = function (pixels, colors, len, opaqueOnly) {
snapshotBuffer.bind();
snapshotBuffer.clear();
this.render({force: true, opaqueOnly: opaqueOnly});
let color;
let i;
let j;
let k;
for (i = 0; i < len; i++) {
j = i * 2;
k = i * 4;
color = snapshotBuffer.read(pixels[j], pixels[j + 1]);
colors[k] = color[0];
colors[k + 1] = color[1];
colors[k + 2] = color[2];
colors[k + 3] = color[3];
}
snapshotBuffer.unbind();
imageDirty = true;
};
/**
* Enter snapshot mode.
*
* Switches rendering to a hidden snapshot canvas.
*
* Exit snapshot mode using endSnapshot().
*/
this.beginSnapshot = function () {
snapshotBuffer.bind();
snapshotBuffer.clear();
snapshotBound = true;
};
/**
* When in snapshot mode, renders a frame of the current Scene state to the snapshot canvas.
*/
this.renderSnapshot = function () {
if (!snapshotBound) {
return;
}
snapshotBuffer.clear();
this.render({force: true, opaqueOnly: false});
imageDirty = true;
};
/**
* When in snapshot mode, gets an image of the snapshot canvas.
*
* @private
* @returns {String} The image data URI.
*/
this.readSnapshot = function (params) {
const imageDataURI = snapshotBuffer.readImage(params);
return imageDataURI;
};
/**
* Exists snapshot mode.
*
* Switches rendering back to the main canvas.
*/
this.endSnapshot = function () {
if (!snapshotBound) {
return;
}
snapshotBuffer.unbind();
snapshotBound = false;
};
/**
* Destroys this renderer.
* @private
*/
this.destroy = function () {
drawableTypeInfo = {};
drawables = {};
pickBuffer.destroy();
snapshotBuffer.destroy();
saoDepthBuffer.destroy();
occlusionBuffer1.destroy();
occlusionBuffer2.destroy();
saoOcclusionRenderer.destroy();
saoBlurRenderer.destroy();
saoBlendRenderer.destroy();
if (this._occlusionTester) {
this._occlusionTester.destroy();
}
};
};
export {Renderer};
