src/viewer/scene/model/dtx/triangles/lib/DTXTrianglesTextureFactory.js
import {BindableDataTexture} from "./../../BindableDataTexture.js";
import {dataTextureRamStats} from "./dataTextureRamStats.js";
/**
* @private
*/
export class DTXTrianglesTextureFactory {
constructor() {
}
/**
* Enables the currently binded ````WebGLTexture```` to be used as a data texture.
*
* @param {WebGL2RenderingContext} gl
*
* @private
*/
disableBindedTextureFiltering(gl) {
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
}
/**
* This will generate an RGBA texture for:
* - colors
* - pickColors
* - flags
* - flags2
* - vertex bases
* - vertex base offsets
*
* The texture will have:
* - 4 RGBA columns per row: for each object (pick) color and flags(2)
* - N rows where N is the number of objects
*
* @param {WebGL2RenderingContext} gl
* @param {ArrayLike<ArrayLike<int>>} colors Array of colors for all objects in the layer
* @param {ArrayLike<ArrayLike<int>>} pickColors Array of pickColors for all objects in the layer
* @param {ArrayLike<int>} vertexBases Array of position-index-bases foteh all objects in the layer
* @param {ArrayLike<int>} indexBaseOffsets For triangles: array of offests between the (gl_VertexID / 3) and the position where the indices start in the texture layer
* @param {ArrayLike<int>} edgeIndexBaseOffsets For edges: Array of offests between the (gl_VertexID / 2) and the position where the edge indices start in the texture layer
* @param {ArrayLike<boolean>} solid Array is-solid flag for all objects in the layer
*
* @returns {BindableDataTexture}
*/
createTextureForColorsAndFlags(gl, colors, pickColors, vertexBases, indexBaseOffsets, edgeIndexBaseOffsets, solid) {
const numPortions = colors.length;
// The number of rows in the texture is the number of
// objects in the layer.
this.numPortions = numPortions;
const textureWidth = 512 * 8;
const textureHeight = Math.ceil(numPortions / (textureWidth / 8));
if (textureHeight === 0) {
throw "texture height===0";
}
// 8 columns per texture row:
// - col0: (RGBA) object color RGBA
// - col1: (packed Uint32 as RGBA) object pick color
// - col2: (packed 4 bytes as RGBA) object flags
// - col3: (packed 4 bytes as RGBA) object flags2
// - col4: (packed Uint32 bytes as RGBA) vertex base
// - col5: (packed Uint32 bytes as RGBA) index base offset
// - col6: (packed Uint32 bytes as RGBA) edge index base offset
// - col7: (packed 4 bytes as RGBA) is-solid flag for objects
const texArray = new Uint8Array(4 * textureWidth * textureHeight);
dataTextureRamStats.sizeDataColorsAndFlags += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0; i < numPortions; i++) {
// object color
texArray.set(colors [i], i * 32 + 0);
texArray.set(pickColors [i], i * 32 + 4); // object pick color
texArray.set([0, 0, 0, 0], i * 32 + 8); // object flags
texArray.set([0, 0, 0, 0], i * 32 + 12); // object flags2
// vertex base
texArray.set([
(vertexBases[i] >> 24) & 255,
(vertexBases[i] >> 16) & 255,
(vertexBases[i] >> 8) & 255,
(vertexBases[i]) & 255,
],
i * 32 + 16
);
// triangles index base offset
texArray.set(
[
(indexBaseOffsets[i] >> 24) & 255,
(indexBaseOffsets[i] >> 16) & 255,
(indexBaseOffsets[i] >> 8) & 255,
(indexBaseOffsets[i]) & 255,
],
i * 32 + 20
);
// edge index base offset
texArray.set(
[
(edgeIndexBaseOffsets[i] >> 24) & 255,
(edgeIndexBaseOffsets[i] >> 16) & 255,
(edgeIndexBaseOffsets[i] >> 8) & 255,
(edgeIndexBaseOffsets[i]) & 255,
],
i * 32 + 24
);
// is-solid flag
texArray.set([solid[i] ? 1 : 0, 0, 0, 0], i * 32 + 28);
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGBA8UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGBA_INTEGER, gl.UNSIGNED_BYTE, texArray, 0);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight, texArray);
}
/**
* This will generate a texture for all object offsets.
*
* @param {WebGL2RenderingContext} gl
* @param {int[]} offsets Array of int[3], one XYZ offset array for each object
*
* @returns {BindableDataTexture}
*/
createTextureForObjectOffsets(gl, numOffsets) {
const textureWidth = 512;
const textureHeight = Math.ceil(numOffsets / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArray = new Float32Array(3 * textureWidth * textureHeight).fill(0);
dataTextureRamStats.sizeDataTextureOffsets += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGB32F, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGB, gl.FLOAT, texArray, 0);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight, texArray);
}
/**
* This will generate a texture for all positions decode matrices in the layer.
*
* The texture will have:
* - 4 RGBA columns per row (each column will contain 4 packed half-float (16 bits) components).
* Thus, each row will contain 16 packed half-floats corresponding to a complete positions decode matrix)
* - N rows where N is the number of objects
*
* @param {WebGL2RenderingContext} gl
* @param {ArrayLike<Matrix4x4>} instanceMatrices Array of geometry instancing matrices for all objects in the layer. Null if the objects are not instanced.
*
* @returns {BindableDataTexture}
*/
createTextureForInstancingMatrices(gl, instanceMatrices) {
const numMatrices = instanceMatrices.length;
if (numMatrices === 0) {
throw "num instance matrices===0";
}
// in one row we can fit 512 matrices
const textureWidth = 512 * 4;
const textureHeight = Math.ceil(numMatrices / (textureWidth / 4));
const texArray = new Float32Array(4 * textureWidth * textureHeight);
// dataTextureRamStats.sizeDataPositionDecodeMatrices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0; i < instanceMatrices.length; i++) { // 4x4 values
texArray.set(instanceMatrices[i], i * 16);
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGBA32F, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGBA, gl.FLOAT, texArray, 0);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight, texArray);
}
/**
* This will generate a texture for all positions decode matrices in the layer.
*
* The texture will have:
* - 4 RGBA columns per row (each column will contain 4 packed half-float (16 bits) components).
* Thus, each row will contain 16 packed half-floats corresponding to a complete positions decode matrix)
* - N rows where N is the number of objects
*
* @param {WebGL2RenderingContext} gl
* @param {ArrayLike<Matrix4x4>} positionDecodeMatrices Array of positions decode matrices for all objects in the layer
*
* @returns {BindableDataTexture}
*/
createTextureForPositionsDecodeMatrices(gl, positionDecodeMatrices) {
const numMatrices = positionDecodeMatrices.length;
if (numMatrices === 0) {
throw "num decode+entity matrices===0";
}
// in one row we can fit 512 matrices
const textureWidth = 512 * 4;
const textureHeight = Math.ceil(numMatrices / (textureWidth / 4));
const texArray = new Float32Array(4 * textureWidth * textureHeight);
dataTextureRamStats.sizeDataPositionDecodeMatrices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0; i < positionDecodeMatrices.length; i++) { // 4x4 values
texArray.set(positionDecodeMatrices[i], i * 16);
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGBA32F, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGBA, gl.FLOAT, texArray, 0);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param indicesArrays
* @param lenIndices
*
* @returns {BindableDataTexture}
*/
createTextureFor8BitIndices(gl, indicesArrays, lenIndices) {
if (lenIndices === 0) {
return {texture: null, textureHeight: 0,};
}
const textureWidth = 4096;
const textureHeight = Math.ceil(lenIndices / 3 / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight * 3;
const texArray = new Uint8Array(texArraySize);
dataTextureRamStats.sizeDataTextureIndices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0, j = 0, len = indicesArrays.length; i < len; i++) {
const pc = indicesArrays[i];
texArray.set(pc, j);
j += pc.length;
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGB8UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGB_INTEGER, gl.UNSIGNED_BYTE, texArray, 0);
this.disableBindedTextureFiltering(gl);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param indicesArrays
* @param lenIndices
*
* @returns {BindableDataTexture}
*/
createTextureFor16BitIndices(gl, indicesArrays, lenIndices) {
if (lenIndices === 0) {
return {texture: null, textureHeight: 0,};
}
const textureWidth = 4096;
const textureHeight = Math.ceil(lenIndices / 3 / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight * 3;
const texArray = new Uint16Array(texArraySize);
dataTextureRamStats.sizeDataTextureIndices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0, j = 0, len = indicesArrays.length; i < len; i++) {
const pc = indicesArrays[i];
texArray.set(pc, j);
j += pc.length;
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGB16UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGB_INTEGER, gl.UNSIGNED_SHORT, texArray, 0);
this.disableBindedTextureFiltering(gl);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param indicesArrays
* @param lenIndices
*
* @returns {BindableDataTexture}
*/
createTextureFor32BitIndices(gl, indicesArrays, lenIndices) {
if (lenIndices === 0) {
return {texture: null, textureHeight: 0,};
}
const textureWidth = 4096;
const textureHeight = Math.ceil(lenIndices / 3 / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight * 3;
const texArray = new Uint32Array(texArraySize);
dataTextureRamStats.sizeDataTextureIndices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0, j = 0, len = indicesArrays.length; i < len; i++) {
const pc = indicesArrays[i];
texArray.set(pc, j);
j += pc.length;
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGB32UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGB_INTEGER, gl.UNSIGNED_INT, texArray, 0);
this.disableBindedTextureFiltering(gl);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param indicesArrays
* @param lenIndices
*
* @returns {BindableDataTexture}
*/
createTextureFor8BitsEdgeIndices(gl, indicesArrays, lenIndices) {
if (lenIndices === 0) {
return {texture: null, textureHeight: 0,};
}
const textureWidth = 4096;
const textureHeight = Math.ceil(lenIndices / 2 / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight * 2;
const texArray = new Uint8Array(texArraySize);
dataTextureRamStats.sizeDataTextureEdgeIndices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0, j = 0, len = indicesArrays.length; i < len; i++) {
const pc = indicesArrays[i];
texArray.set(pc, j);
j += pc.length;
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RG8UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RG_INTEGER, gl.UNSIGNED_BYTE, texArray, 0);
this.disableBindedTextureFiltering(gl);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param indicesArrays
* @param lenIndices
*
* @returns {BindableDataTexture}
*/
createTextureFor16BitsEdgeIndices(gl, indicesArrays, lenIndices) {
if (lenIndices === 0) {
return {texture: null, textureHeight: 0,};
}
const textureWidth = 4096;
const textureHeight = Math.ceil(lenIndices / 2 / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight * 2;
const texArray = new Uint16Array(texArraySize);
dataTextureRamStats.sizeDataTextureEdgeIndices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0, j = 0, len = indicesArrays.length; i < len; i++) {
const pc = indicesArrays[i];
texArray.set(pc, j);
j += pc.length;
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RG16UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RG_INTEGER, gl.UNSIGNED_SHORT, texArray, 0);
this.disableBindedTextureFiltering(gl);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param indicesArrays
* @param lenIndices
*
* @returns {BindableDataTexture}
*/
createTextureFor32BitsEdgeIndices(gl, indicesArrays, lenIndices) {
if (lenIndices === 0) {
return {texture: null, textureHeight: 0,};
}
const textureWidth = 4096;
const textureHeight = Math.ceil(lenIndices / 2 / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight * 2;
const texArray = new Uint32Array(texArraySize);
dataTextureRamStats.sizeDataTextureEdgeIndices += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0, j = 0, len = indicesArrays.length; i < len; i++) {
const pc = indicesArrays[i];
texArray.set(pc, j);
j += pc.length;
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RG32UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RG_INTEGER, gl.UNSIGNED_INT, texArray, 0);
this.disableBindedTextureFiltering(gl);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param {ArrayLike<int>} positionsArrays Arrays of quantized positions in the layer
* @param lenPositions
*
* This will generate a texture for positions in the layer.
*
* The texture will have:
* - 1024 columns, where each pixel will be a 16-bit-per-component RGB texture, corresponding to the XYZ of the position
* - a number of rows R where R*1024 is just >= than the number of vertices (positions / 3)
*
* @returns {BindableDataTexture}
*/
createTextureForPositions(gl, positionsArrays, lenPositions) {
const numVertices = lenPositions / 3;
const textureWidth = 4096;
const textureHeight = Math.ceil(numVertices / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight * 3;
const texArray = new Uint16Array(texArraySize);
dataTextureRamStats.sizeDataTexturePositions += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
for (let i = 0, j = 0, len = positionsArrays.length; i < len; i++) {
const pc = positionsArrays[i];
texArray.set(pc, j);
j += pc.length;
}
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.RGB16UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RGB_INTEGER, gl.UNSIGNED_SHORT, texArray, 0);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
/**
* @param {WebGL2RenderingContext} gl
* @param {ArrayLike<int>} portionIdsArray
*
* @returns {BindableDataTexture}
*/
createTextureForPackedPortionIds(gl, portionIdsArray) {
if (portionIdsArray.length === 0) {
return {texture: null, textureHeight: 0,};
}
const lenArray = portionIdsArray.length;
const textureWidth = 4096;
const textureHeight = Math.ceil(lenArray / textureWidth);
if (textureHeight === 0) {
throw "texture height===0";
}
const texArraySize = textureWidth * textureHeight;
const texArray = new Uint16Array(texArraySize);
texArray.set(portionIdsArray, 0);
dataTextureRamStats.sizeDataTexturePortionIds += texArray.byteLength;
dataTextureRamStats.numberOfTextures++;
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texStorage2D(gl.TEXTURE_2D, 1, gl.R16UI, textureWidth, textureHeight);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.RED_INTEGER, gl.UNSIGNED_SHORT, texArray, 0);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.bindTexture(gl.TEXTURE_2D, null);
return new BindableDataTexture(gl, texture, textureWidth, textureHeight);
}
}
