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{\n gl,\n IModel,\n IModelDrawOptions,\n IModelInitializationOptions,\n IUniform,\n} from '@antv/g-webgpu-core';\nimport regl from 'regl';\nimport { extractUniforms } from '../utils/uniform';\nimport {\n blendEquationMap,\n blendFuncMap,\n cullFaceMap,\n depthFuncMap,\n primitiveMap,\n stencilFuncMap,\n stencilOpMap,\n} from './constants';\nimport ReglAttribute from './ReglAttribute';\nimport ReglElements from './ReglElements';\nimport ReglFramebuffer from './ReglFramebuffer';\nimport ReglTexture2D from './ReglTexture2D';\n\n/**\n * adaptor for regl.DrawCommand\n */\nexport default class ReglModel implements IModel {\n private reGl: regl.Regl;\n private drawCommand: regl.DrawCommand;\n private uniforms: {\n [key: string]: IUniform;\n } = {};\n\n constructor(reGl: regl.Regl, options: IModelInitializationOptions) {\n this.reGl = reGl;\n const {\n vs,\n fs,\n attributes,\n uniforms,\n primitive,\n count,\n elements,\n depth,\n blend,\n stencil,\n cull,\n instances,\n scissor,\n viewport,\n } = options;\n const reglUniforms: { [key: string]: IUniform } = {};\n if (uniforms) {\n this.uniforms = extractUniforms(uniforms);\n Object.keys(uniforms).forEach((uniformName) => {\n // use regl prop API\n // @ts-ignore\n reglUniforms[uniformName] = reGl.prop(uniformName);\n });\n }\n\n const reglAttributes: { [key: string]: regl.Attribute } = {};\n Object.keys(attributes).forEach((name: string) => {\n reglAttributes[name] = (attributes[name] as ReglAttribute).get();\n });\n const drawParams: regl.DrawConfig = {\n attributes: reglAttributes,\n frag: `#ifdef GL_FRAGMENT_PRECISION_HIGH\n precision highp float;\n#else\n precision mediump float;\n#endif\n${fs}`,\n uniforms: reglUniforms,\n vert: vs,\n primitive:\n primitiveMap[primitive === undefined ? gl.TRIANGLES : primitive],\n };\n if (instances) {\n drawParams.instances = instances;\n }\n\n // elements 中可能包含 count，此时不应传入\n if (count) {\n drawParams.count = count;\n }\n\n if (elements) {\n drawParams.elements = (elements as ReglElements).get();\n }\n\n if (scissor) {\n drawParams.scissor = scissor;\n }\n\n if (viewport) {\n drawParams.viewport = viewport;\n }\n\n this.initDepthDrawParams({ depth }, drawParams);\n this.initBlendDrawParams({ blend }, drawParams);\n this.initStencilDrawParams({ stencil }, drawParams);\n this.initCullDrawParams({ cull }, drawParams);\n\n this.drawCommand = reGl(drawParams);\n }\n\n public addUniforms(uniforms: { [key: string]: IUniform }) {\n this.uniforms = {\n ...this.uniforms,\n ...extractUniforms(uniforms),\n };\n }\n\n public draw(options: IModelDrawOptions) {\n const uniforms: {\n [key: string]: IUniform;\n } = {\n ...this.uniforms,\n ...extractUniforms(options.uniforms || {}),\n };\n\n const reglDrawProps: {\n [key: string]:\n | regl.Framebuffer\n | regl.Texture2D\n | number\n | number[]\n | boolean;\n } = {};\n\n Object.keys(uniforms).forEach((uniformName: string) => {\n const type = typeof uniforms[uniformName];\n if (\n type === 'boolean' ||\n type === 'number' ||\n Array.isArray(uniforms[uniformName]) ||\n // @ts-ignore\n uniforms[uniformName].BYTES_PER_ELEMENT\n ) {\n reglDrawProps[uniformName] = uniforms[uniformName] as\n | number\n | number[]\n | boolean;\n } else {\n reglDrawProps[uniformName] = (uniforms[uniformName] as\n | ReglFramebuffer\n | ReglTexture2D).get();\n }\n });\n this.drawCommand(reglDrawProps);\n }\n\n public destroy() {\n // don't need do anything since we will call `rendererService.cleanup()`\n }\n\n /**\n * @see https://github.com/regl-project/regl/blob/gh-pages/API.md#depth-buffer\n */\n private initDepthDrawParams(\n { depth }: Pick<IModelInitializationOptions, 'depth'>,\n drawParams: regl.DrawConfig,\n ) {\n if (depth) {\n drawParams.depth = {\n enable: depth.enable === undefined ? true : !!depth.enable,\n mask: depth.mask === undefined ? true : !!depth.mask,\n func: depthFuncMap[depth.func || gl.LESS],\n range: depth.range || [0, 1],\n };\n }\n }\n\n /**\n * @see https://github.com/regl-project/regl/blob/gh-pages/API.md#blending\n */\n private initBlendDrawParams(\n { blend }: Pick<IModelInitializationOptions, 'blend'>,\n drawParams: regl.DrawConfig,\n ) {\n if (blend) {\n const { enable, func, equation, color = [0, 0, 0, 0] } = blend;\n // @ts-ignore\n drawParams.blend = {\n enable: !!enable,\n func: {\n srcRGB: blendFuncMap[(func && func.srcRGB) || gl.SRC_ALPHA],\n srcAlpha: blendFuncMap[(func && func.srcAlpha) || gl.SRC_ALPHA],\n dstRGB: blendFuncMap[(func && func.dstRGB) || gl.ONE_MINUS_SRC_ALPHA],\n dstAlpha:\n blendFuncMap[(func && func.dstAlpha) || gl.ONE_MINUS_SRC_ALPHA],\n },\n equation: {\n rgb: blendEquationMap[(equation && equation.rgb) || gl.FUNC_ADD],\n alpha: blendEquationMap[(equation && equation.alpha) || gl.FUNC_ADD],\n },\n color,\n };\n }\n }\n\n /**\n * @see https://github.com/regl-project/regl/blob/gh-pages/API.md#stencil\n */\n private initStencilDrawParams(\n { stencil }: Pick<IModelInitializationOptions, 'stencil'>,\n drawParams: regl.DrawConfig,\n ) {\n if (stencil) {\n const {\n enable,\n mask = -1,\n func = {\n cmp: gl.ALWAYS,\n ref: 0,\n mask: -1,\n },\n opFront = {\n fail: gl.KEEP,\n zfail: gl.KEEP,\n zpass: gl.KEEP,\n },\n opBack = {\n fail: gl.KEEP,\n zfail: gl.KEEP,\n zpass: gl.KEEP,\n },\n } = stencil;\n drawParams.stencil = {\n enable: !!enable,\n mask,\n func: {\n ...func,\n cmp: stencilFuncMap[func.cmp],\n },\n opFront: {\n fail: stencilOpMap[opFront.fail],\n zfail: stencilOpMap[opFront.zfail],\n zpass: stencilOpMap[opFront.zpass],\n },\n opBack: {\n fail: stencilOpMap[opBack.fail],\n zfail: stencilOpMap[opBack.zfail],\n zpass: stencilOpMap[opBack.zpass],\n },\n };\n }\n }\n\n /**\n * @see https://github.com/regl-project/regl/blob/gh-pages/API.md#culling\n */\n private initCullDrawParams(\n { cull }: Pick<IModelInitializationOptions, 'cull'>,\n drawParams: regl.DrawConfig,\n ) {\n if (cull) {\n const { enable, face = gl.BACK } = cull;\n drawParams.cull = {\n enable: !!enable,\n face: cullFaceMap[face],\n };\n }\n }\n}\n"],"file":"ReglModel.js"} |