@pixi/core/lib/shader/utils/generateUniformBufferSync.mjs

Core PixiJS

import "./index.mjs";
import { uniformParsers } from "./uniformParsers.mjs";
import { mapSize } from "./mapSize.mjs";
function uboUpdate(_ud, _uv, _renderer, _syncData, buffer) {
  _renderer.buffer.update(buffer);
}
const UBO_TO_SINGLE_SETTERS = {
  float: `
        data[offset] = v;
    `,
  vec2: `
        data[offset] = v[0];
        data[offset+1] = v[1];
    `,
  vec3: `
        data[offset] = v[0];
        data[offset+1] = v[1];
        data[offset+2] = v[2];

    `,
  vec4: `
        data[offset] = v[0];
        data[offset+1] = v[1];
        data[offset+2] = v[2];
        data[offset+3] = v[3];
    `,
  mat2: `
        data[offset] = v[0];
        data[offset+1] = v[1];

        data[offset+4] = v[2];
        data[offset+5] = v[3];
    `,
  mat3: `
        data[offset] = v[0];
        data[offset+1] = v[1];
        data[offset+2] = v[2];

        data[offset + 4] = v[3];
        data[offset + 5] = v[4];
        data[offset + 6] = v[5];

        data[offset + 8] = v[6];
        data[offset + 9] = v[7];
        data[offset + 10] = v[8];
    `,
  mat4: `
        for(var i = 0; i < 16; i++)
        {
            data[offset + i] = v[i];
        }
    `
}, GLSL_TO_STD40_SIZE = {
  float: 4,
  vec2: 8,
  vec3: 12,
  vec4: 16,
  int: 4,
  ivec2: 8,
  ivec3: 12,
  ivec4: 16,
  uint: 4,
  uvec2: 8,
  uvec3: 12,
  uvec4: 16,
  bool: 4,
  bvec2: 8,
  bvec3: 12,
  bvec4: 16,
  mat2: 16 * 2,
  mat3: 16 * 3,
  mat4: 16 * 4
};
function createUBOElements(uniformData) {
  const uboElements = uniformData.map((data) => ({
    data,
    offset: 0,
    dataLen: 0,
    dirty: 0
  }));
  let size = 0, chunkSize = 0, offset = 0;
  for (let i = 0; i < uboElements.length; i++) {
    const uboElement = uboElements[i];
    if (size = GLSL_TO_STD40_SIZE[uboElement.data.type], uboElement.data.size > 1 && (size = Math.max(size, 16) * uboElement.data.size), uboElement.dataLen = size, chunkSize % size !== 0 && chunkSize < 16) {
      const lineUpValue = chunkSize % size % 16;
      chunkSize += lineUpValue, offset += lineUpValue;
    }
    chunkSize + size > 16 ? (offset = Math.ceil(offset / 16) * 16, uboElement.offset = offset, offset += size, chunkSize = size) : (uboElement.offset = offset, chunkSize += size, offset += size);
  }
  return offset = Math.ceil(offset / 16) * 16, { uboElements, size: offset };
}
function getUBOData(uniforms, uniformData) {
  const usedUniformDatas = [];
  for (const i in uniforms)
    uniformData[i] && usedUniformDatas.push(uniformData[i]);
  return usedUniformDatas.sort((a, b) => a.index - b.index), usedUniformDatas;
}
function generateUniformBufferSync(group, uniformData) {
  if (!group.autoManage)
    return { size: 0, syncFunc: uboUpdate };
  const usedUniformDatas = getUBOData(group.uniforms, uniformData), { uboElements, size } = createUBOElements(usedUniformDatas), funcFragments = [`
    var v = null;
    var v2 = null;
    var cv = null;
    var t = 0;
    var gl = renderer.gl
    var index = 0;
    var data = buffer.data;
    `];
  for (let i = 0; i < uboElements.length; i++) {
    const uboElement = uboElements[i], uniform = group.uniforms[uboElement.data.name], name = uboElement.data.name;
    let parsed = !1;
    for (let j = 0; j < uniformParsers.length; j++) {
      const uniformParser = uniformParsers[j];
      if (uniformParser.codeUbo && uniformParser.test(uboElement.data, uniform)) {
        funcFragments.push(
          `offset = ${uboElement.offset / 4};`,
          uniformParsers[j].codeUbo(uboElement.data.name, uniform)
        ), parsed = !0;
        break;
      }
    }
    if (!parsed)
      if (uboElement.data.size > 1) {
        const size2 = mapSize(uboElement.data.type), rowSize = Math.max(GLSL_TO_STD40_SIZE[uboElement.data.type] / 16, 1), elementSize = size2 / rowSize, remainder = (4 - elementSize % 4) % 4;
        funcFragments.push(`
                cv = ud.${name}.value;
                v = uv.${name};
                offset = ${uboElement.offset / 4};

                t = 0;

                for(var i=0; i < ${uboElement.data.size * rowSize}; i++)
                {
                    for(var j = 0; j < ${elementSize}; j++)
                    {
                        data[offset++] = v[t++];
                    }
                    offset += ${remainder};
                }

                `);
      } else {
        const template = UBO_TO_SINGLE_SETTERS[uboElement.data.type];
        funcFragments.push(`
                cv = ud.${name}.value;
                v = uv.${name};
                offset = ${uboElement.offset / 4};
                ${template};
                `);
      }
  }
  return funcFragments.push(`
       renderer.buffer.update(buffer);
    `), {
    size,
    // eslint-disable-next-line no-new-func
    syncFunc: new Function(
      "ud",
      "uv",
      "renderer",
      "syncData",
      "buffer",
      funcFragments.join(`
`)
    )
  };
}
export {
  createUBOElements,
  generateUniformBufferSync,
  getUBOData
};
//# sourceMappingURL=generateUniformBufferSync.mjs.map