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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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x | import macro from 'vtk.js/Sources/macros';
import vtkWebGPURenderEncoder from 'vtk.js/Sources/Rendering/WebGPU/RenderEncoder';
import vtkWebGPUTexture from 'vtk.js/Sources/Rendering/WebGPU/Texture';
import vtkWebGPUShaderCache from 'vtk.js/Sources/Rendering/WebGPU/ShaderCache';
import vtkRenderPass from 'vtk.js/Sources/Rendering/SceneGraph/RenderPass';
// ----------------------------------------------------------------------------
function vtkWebGPUHardwareSelectionPass(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkWebGPUHardwareSelectionPass');
// this pass implements a forward rendering pipeline
// if both volumes and opaque geometry are present
// it will mix the two together by capturing a zbuffer
// first
publicAPI.traverse = (viewNode, renNode) => {
if (model.deleted) {
return;
}
model._currentParent = null;
// build
publicAPI.setCurrentOperation('buildPass');
viewNode.traverse(publicAPI);
const device = viewNode.getDevice();
if (!model.selectionRenderEncoder) {
publicAPI.createRenderEncoder();
// create color texture
model.colorTexture = vtkWebGPUTexture.newInstance({
label: 'hardwareSelectorColor',
});
model.colorTexture.create(device, {
width: viewNode.getCanvas().width,
height: viewNode.getCanvas().height,
format: 'rgba32uint',
/* eslint-disable no-undef */
/* eslint-disable no-bitwise */
usage: GPUTextureUsage.RENDER_ATTACHMENT | GPUTextureUsage.COPY_SRC,
});
const v1 = model.colorTexture.createView('hardwareSelectColorTexture');
model.selectionRenderEncoder.setColorTextureView(0, v1);
// create depth texture
model.depthTexture = vtkWebGPUTexture.newInstance({
label: 'hardwareSelectorDepth',
});
model.depthTexture.create(device, {
width: viewNode.getCanvas().width,
height: viewNode.getCanvas().height,
format: 'depth32float',
/* eslint-disable no-undef */
/* eslint-disable no-bitwise */
usage: GPUTextureUsage.RENDER_ATTACHMENT | GPUTextureUsage.COPY_SRC,
});
const v2 = model.depthTexture.createView('hardwareSelectDepthTexture');
model.selectionRenderEncoder.setDepthTextureView(v2);
} else {
model.colorTexture.resize(
viewNode.getCanvas().width,
viewNode.getCanvas().height
);
model.depthTexture.resizeToMatch(model.colorTexture);
}
model.selectionRenderEncoder.attachTextureViews();
renNode.setRenderEncoder(model.selectionRenderEncoder);
publicAPI.setCurrentOperation('cameraPass');
renNode.traverse(publicAPI);
// opaque pass is used for selection
publicAPI.setCurrentOperation('opaquePass');
renNode.traverse(publicAPI);
};
publicAPI.createRenderEncoder = () => {
model.selectionRenderEncoder = vtkWebGPURenderEncoder.newInstance({
label: 'HardwareSelectionPass',
});
// default settings are fine for this
model.selectionRenderEncoder.setPipelineHash('sel');
model.selectionRenderEncoder.setReplaceShaderCodeFunction((pipeline) => {
const fDesc = pipeline.getShaderDescription('fragment');
fDesc.addOutput('vec4<u32>', 'outColor');
let code = fDesc.getCode();
code = vtkWebGPUShaderCache.substitute(
code,
'//VTK::RenderEncoder::Impl',
['output.outColor = vec4<u32>(mapperUBO.PropID, compositeID, 0u, 0u);']
).result;
fDesc.setCode(code);
});
const renDesc = model.selectionRenderEncoder.getDescription();
renDesc.colorAttachments[0].clearValue = [0.0, 0.0, 0.0, 0.0];
model.selectionRenderEncoder.setPipelineSettings({
primitive: { cullMode: 'none' },
depthStencil: {
depthWriteEnabled: true,
depthCompare: 'greater',
format: 'depth32float',
},
fragment: {
targets: [
{
format: 'rgba32uint',
blend: undefined,
},
],
},
});
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
selectionRenderEncoder: null,
colorTexture: null,
depthTexture: null,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
vtkRenderPass.extend(publicAPI, model, initialValues);
macro.get(publicAPI, model, ['colorTexture', 'depthTexture']);
// Object methods
vtkWebGPUHardwareSelectionPass(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(
extend,
'vtkWebGPUHardwareSelectionPass'
);
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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