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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 | 1x 1x 1x | import * as macro from 'vtk.js/Sources/macros'; import vtkWebGPUShaderCache from 'vtk.js/Sources/Rendering/WebGPU/ShaderCache'; // methods we forward to the handle const forwarded = [ 'setBindGroup', 'setIndexBuffer', 'setVertexBuffer', 'draw', 'drawIndexed', ]; // ---------------------------------------------------------------------------- // vtkWebGPURenderEncoder methods // ---------------------------------------------------------------------------- function vtkWebGPURenderEncoder(publicAPI, model) { // Set our className model.classHierarchy.push('vtkWebGPURenderEncoder'); publicAPI.begin = (encoder) => { model.drawCallbacks = []; model.handle = encoder.beginRenderPass(model.description); if (model.label) { model.handle.pushDebugGroup(model.label); } }; publicAPI.end = () => { // loop over registered pipelines and their callbacks for (let i = 0; i < model.drawCallbacks.length; i++) { const pStruct = model.drawCallbacks[i]; const pl = pStruct.pipeline; publicAPI.setPipeline(pl); for (let cb = 0; cb < pStruct.callbacks.length; cb++) { pStruct.callbacks[cb](publicAPI); } } if (model.label) { model.handle.popDebugGroup(); } model.handle.end(); model.boundPipeline = null; }; publicAPI.setPipeline = (pl) => { if (model.boundPipeline === pl) { return; } model.handle.setPipeline(pl.getHandle()); const pd = pl.getPipelineDescription(); // check attachment state if (model.colorTextureViews.length !== pd.fragment.targets.length) { console.log( `mismatched attachment counts on pipeline ${pd.fragment.targets.length} while encoder has ${model.colorTextureViews.length}` ); console.trace(); } else { for (let i = 0; i < model.colorTextureViews.length; i++) { const fmt = model.colorTextureViews[i].getTexture()?.getFormat(); if (fmt && fmt !== pd.fragment.targets[i].format) { console.log( `mismatched attachments for attachment ${i} on pipeline ${pd.fragment.targets[i].format} while encoder has ${fmt}` ); console.trace(); } } } // check depth buffer if (!model.depthTextureView !== !('depthStencil' in pd)) { console.log('mismatched depth attachments'); console.trace(); } else if (model.depthTextureView) { const dfmt = model.depthTextureView.getTexture()?.getFormat(); if (dfmt && dfmt !== pd.depthStencil.format) { console.log( `mismatched depth attachments on pipeline ${pd.depthStencil.format} while encoder has ${dfmt}` ); console.trace(); } } model.boundPipeline = pl; }; publicAPI.replaceShaderCode = (pipeline) => { model.replaceShaderCodeFunction(pipeline); }; publicAPI.setColorTextureView = (idx, view) => { if (model.colorTextureViews[idx] === view) { return; } model.colorTextureViews[idx] = view; }; publicAPI.activateBindGroup = (bg) => { const device = model.boundPipeline.getDevice(); const midx = model.boundPipeline.getBindGroupLayoutCount(bg.getLabel()); model.handle.setBindGroup(midx, bg.getBindGroup(device)); // verify bind group layout matches const bgl1 = device.getBindGroupLayoutDescription( bg.getBindGroupLayout(device) ); const bgl2 = device.getBindGroupLayoutDescription( model.boundPipeline.getBindGroupLayout(midx) ); if (bgl1 !== bgl2) { console.log( `renderEncoder ${model.pipelineHash} mismatched bind group layouts bind group has\n${bgl1}\n versus pipeline\n${bgl2}\n` ); console.trace(); } }; publicAPI.attachTextureViews = () => { // for each texture create a view if we do not already have one for (let i = 0; i < model.colorTextureViews.length; i++) { if (!model.description.colorAttachments[i]) { model.description.colorAttachments[i] = { view: model.colorTextureViews[i].getHandle(), }; } else { model.description.colorAttachments[i].view = model.colorTextureViews[i].getHandle(); } } if (model.depthTextureView) { model.description.depthStencilAttachment.view = model.depthTextureView.getHandle(); } }; // register pipeline callbacks from a mapper publicAPI.registerDrawCallback = (pipeline, cb) => { // if there is a matching pipeline just add the cb for (let i = 0; i < model.drawCallbacks.length; i++) { if (model.drawCallbacks[i].pipeline === pipeline) { model.drawCallbacks[i].callbacks.push(cb); return; } } model.drawCallbacks.push({ pipeline, callbacks: [cb] }); }; // simple forwarders for (let i = 0; i < forwarded.length; i++) { publicAPI[forwarded[i]] = (...args) => model.handle[forwarded[i]](...args); } } // ---------------------------------------------------------------------------- // Object factory // ---------------------------------------------------------------------------- const DEFAULT_VALUES = { description: null, handle: null, boundPipeline: null, pipelineHash: null, pipelineSettings: null, replaceShaderCodeFunction: null, depthTextureView: null, label: null, }; // ---------------------------------------------------------------------------- export function extend(publicAPI, model, initialValues = {}) { Object.assign(model, DEFAULT_VALUES, initialValues); // Build VTK API macro.obj(publicAPI, model); model.description = { colorAttachments: [ { view: undefined, loadOp: 'load', storeOp: 'store', }, ], depthStencilAttachment: { view: undefined, depthLoadOp: 'clear', depthClearValue: 0.0, depthStoreOp: 'store', }, }; // default shader code just writes out the computedColor model.replaceShaderCodeFunction = (pipeline) => { const fDesc = pipeline.getShaderDescription('fragment'); fDesc.addOutput('vec4<f32>', 'outColor'); let code = fDesc.getCode(); code = vtkWebGPUShaderCache.substitute(code, '//VTK::RenderEncoder::Impl', [ 'output.outColor = computedColor;', ]).result; fDesc.setCode(code); }; // default pipeline settings model.pipelineSettings = { primitive: { cullMode: 'none' }, depthStencil: { depthWriteEnabled: true, depthCompare: 'greater-equal', format: 'depth32float', }, fragment: { targets: [ { format: 'rgba16float', blend: { color: { srcFactor: 'src-alpha', dstFactor: 'one-minus-src-alpha', }, alpha: { srcfactor: 'one', dstFactor: 'one-minus-src-alpha' }, }, }, ], }, }; model.colorTextureViews = []; macro.get(publicAPI, model, ['boundPipeline', 'colorTextureViews']); macro.setGet(publicAPI, model, [ 'depthTextureView', 'description', 'handle', 'label', 'pipelineHash', 'pipelineSettings', 'replaceShaderCodeFunction', ]); // For more macro methods, see "Sources/macros.js" // Object specific methods vtkWebGPURenderEncoder(publicAPI, model); } // ---------------------------------------------------------------------------- export const newInstance = macro.newInstance(extend, 'vtkWebGPURenderEncoder'); // ---------------------------------------------------------------------------- export default { newInstance, extend }; |