| 1 | {"version":3,"file":"generateUniformBufferSync.js","sources":["../../../src/shader/utils/generateUniformBufferSync.ts"],"sourcesContent":["import { mapSize } from '../utils';\nimport { uniformParsers } from './uniformParsers';\n\nimport type { Dict } from '@pixi/utils';\nimport type { Buffer } from '../../geometry/Buffer';\nimport type { Renderer } from '../../Renderer';\nimport type { IUniformData } from '../Program';\nimport type { UniformGroup } from '../UniformGroup';\n\nexport type UniformsSyncCallback = (...args: any[]) => void;\n\nfunction uboUpdate(_ud: any, _uv: any, _renderer: Renderer, _syncData: any, buffer: Buffer): void\n{\n _renderer.buffer.update(buffer);\n}\n\n// cv = CachedValue\n// v = value\n// ud = uniformData\n// uv = uniformValue\n// l = location\nconst UBO_TO_SINGLE_SETTERS: Dict<string> = {\n float: `\n data[offset] = v;\n `,\n vec2: `\n data[offset] = v[0];\n data[offset+1] = v[1];\n `,\n vec3: `\n data[offset] = v[0];\n data[offset+1] = v[1];\n data[offset+2] = v[2];\n\n `,\n vec4: `\n data[offset] = v[0];\n data[offset+1] = v[1];\n data[offset+2] = v[2];\n data[offset+3] = v[3];\n `,\n mat2: `\n data[offset] = v[0];\n data[offset+1] = v[1];\n\n data[offset+4] = v[2];\n data[offset+5] = v[3];\n `,\n mat3: `\n data[offset] = v[0];\n data[offset+1] = v[1];\n data[offset+2] = v[2];\n\n data[offset + 4] = v[3];\n data[offset + 5] = v[4];\n data[offset + 6] = v[5];\n\n data[offset + 8] = v[6];\n data[offset + 9] = v[7];\n data[offset + 10] = v[8];\n `,\n mat4: `\n for(var i = 0; i < 16; i++)\n {\n data[offset + i] = v[i];\n }\n `\n};\n\nconst GLSL_TO_STD40_SIZE: Dict<number> = {\n float: 4,\n vec2: 8,\n vec3: 12,\n vec4: 16,\n\n int: 4,\n ivec2: 8,\n ivec3: 12,\n ivec4: 16,\n\n uint: 4,\n uvec2: 8,\n uvec3: 12,\n uvec4: 16,\n\n bool: 4,\n bvec2: 8,\n bvec3: 12,\n bvec4: 16,\n\n mat2: 16 * 2,\n mat3: 16 * 3,\n mat4: 16 * 4,\n};\n\ninterface UBOElement\n{\n data: IUniformData\n offset: number,\n dataLen: number,\n dirty: number\n}\n\n/**\n * logic originally from here: https://github.com/sketchpunk/FunWithWebGL2/blob/master/lesson_022/Shaders.js\n * rewrote it, but this was a great starting point to get a solid understanding of whats going on :)\n * @ignore\n * @param uniformData\n */\nexport function createUBOElements(uniformData: IUniformData[]): {uboElements: UBOElement[], size: number}\n{\n const uboElements: UBOElement[] = uniformData.map((data: IUniformData) =>\n ({\n data,\n offset: 0,\n dataLen: 0,\n dirty: 0\n }));\n\n let size = 0;\n let chunkSize = 0;\n let offset = 0;\n\n for (let i = 0; i < uboElements.length; i++)\n {\n const uboElement = uboElements[i];\n\n size = GLSL_TO_STD40_SIZE[uboElement.data.type];\n\n if (uboElement.data.size > 1)\n {\n size = Math.max(size, 16) * uboElement.data.size;\n }\n\n uboElement.dataLen = size;\n\n // add some size offset..\n // must align to the nearest 16 bytes or internally nearest round size\n\n if (chunkSize % size !== 0 && chunkSize < 16)\n {\n // diff required to line up..\n const lineUpValue = (chunkSize % size) % 16;\n\n chunkSize += lineUpValue;\n offset += lineUpValue;\n }\n\n if ((chunkSize + size) > 16)\n {\n offset = Math.ceil(offset / 16) * 16;\n uboElement.offset = offset;\n offset += size;\n chunkSize = size;\n }\n else\n {\n uboElement.offset = offset;\n chunkSize += size;\n offset += size;\n }\n }\n\n offset = Math.ceil(offset / 16) * 16;\n\n return { uboElements, size: offset };\n}\n\nexport function getUBOData(uniforms: Dict<any>, uniformData: Dict<any>): any[]\n{\n const usedUniformDatas = [];\n\n // build..\n for (const i in uniforms)\n {\n if (uniformData[i])\n {\n usedUniformDatas.push(uniformData[i]);\n }\n }\n\n // sort them out by index!\n usedUniformDatas.sort((a, b) => a.index - b.index);\n\n return usedUniformDatas;\n}\n\nexport function generateUniformBufferSync(\n group: UniformGroup,\n uniformData: Dict<any>\n): {size: number, syncFunc: UniformsSyncCallback}\n{\n if (!group.autoManage)\n {\n // if the group is nott automatically managed, we don't need to generate a special function for it...\n return { size: 0, syncFunc: uboUpdate };\n }\n\n const usedUniformDatas = getUBOData(group.uniforms, uniformData);\n\n const { uboElements, size } = createUBOElements(usedUniformDatas);\n\n const funcFragments = [`\n var v = null;\n var v2 = null;\n var cv = null;\n var t = 0;\n var gl = renderer.gl\n var index = 0;\n var data = buffer.data;\n `];\n\n for (let i = 0; i < uboElements.length; i++)\n {\n const uboElement = uboElements[i];\n const uniform = group.uniforms[uboElement.data.name];\n\n const name = uboElement.data.name;\n\n let parsed = false;\n\n for (let j = 0; j < uniformParsers.length; j++)\n {\n const uniformParser = uniformParsers[j];\n\n if (uniformParser.codeUbo && uniformParser.test(uboElement.data, uniform))\n {\n funcFragments.push(\n `offset = ${uboElement.offset / 4};`,\n uniformParsers[j].codeUbo(uboElement.data.name, uniform));\n parsed = true;\n\n break;\n }\n }\n\n if (!parsed)\n {\n if (uboElement.data.size > 1)\n {\n const size = mapSize(uboElement.data.type);\n const rowSize = Math.max(GLSL_TO_STD40_SIZE[uboElement.data.type] / 16, 1);\n const elementSize = size / rowSize;\n const remainder = (4 - (elementSize % 4)) % 4;\n\n funcFragments.push(`\n cv = ud.${name}.value;\n v = uv.${name};\n offset = ${uboElement.offset / 4};\n\n t = 0;\n\n for(var i=0; i < ${uboElement.data.size * rowSize}; i++)\n {\n for(var j = 0; j < ${elementSize}; j++)\n {\n data[offset++] = v[t++];\n }\n offset += ${remainder};\n }\n\n `);\n }\n else\n {\n const template = UBO_TO_SINGLE_SETTERS[uboElement.data.type];\n\n funcFragments.push(`\n cv = ud.${name}.value;\n v = uv.${name};\n offset = ${uboElement.offset / 4};\n ${template};\n `);\n }\n }\n }\n\n funcFragments.push(`\n renderer.buffer.update(buffer);\n `);\n\n return {\n size,\n // eslint-disable-next-line no-new-func\n syncFunc: new Function(\n 'ud',\n 'uv',\n 'renderer',\n 'syncData',\n 'buffer',\n 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