molstar
Version:
A comprehensive macromolecular library.
55 lines (54 loc) • 2.61 kB
JavaScript
/**
* Copyright (c) 2018-2025 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
import { createRenderable } from '../renderable.js';
import { createGraphicsRenderItem } from '../webgl/render-item.js';
import { AttributeSpec, UniformSpec, GlobalUniformSchema, InternalSchema, TextureSpec, ElementsSpec, DefineSpec, GlobalTextureSchema, BaseSchema, ValueSpec, GlobalDefineSchema } from './schema.js';
import { DirectVolumeShaderCode } from '../shader-code.js';
import { ValueCell } from '../../mol-util/index.js';
export const DirectVolumeSchema = {
...BaseSchema,
aPosition: AttributeSpec('float32', 3, 0),
elements: ElementsSpec('uint32'),
uBboxMin: UniformSpec('v3'),
uBboxMax: UniformSpec('v3'),
uBboxSize: UniformSpec('v3'),
uMaxSteps: UniformSpec('i'),
uStepScale: UniformSpec('f'),
uJumpLength: UniformSpec('f'),
uTransform: UniformSpec('m4'),
uGridDim: UniformSpec('v3'),
tTransferTex: TextureSpec('image-uint8', 'alpha', 'ubyte', 'linear'),
uTransferScale: UniformSpec('f', 'material'),
dGridTexType: DefineSpec('string', ['2d', '3d']),
uGridTexDim: UniformSpec('v3'),
tGridTex: TextureSpec('texture', 'rgba', 'ubyte', 'linear'),
uGridStats: UniformSpec('v4'), // [min, max, mean, sigma]
uCellDim: UniformSpec('v3'),
uCartnToUnit: UniformSpec('m4'),
uUnitToCartn: UniformSpec('m4'),
dPackedGroup: DefineSpec('boolean'),
dAxisOrder: DefineSpec('string', ['012', '021', '102', '120', '201', '210']),
dIgnoreLight: DefineSpec('boolean'),
dCelShaded: DefineSpec('boolean'),
dXrayShaded: DefineSpec('string', ['off', 'on', 'inverted']),
meta: ValueSpec('unknown')
};
export function DirectVolumeRenderable(ctx, id, values, state, materialId, transparency, globals) {
const schema = { ...GlobalUniformSchema, ...GlobalTextureSchema, ...GlobalDefineSchema, ...InternalSchema, ...DirectVolumeSchema };
if (!ctx.isWebGL2) {
// workaround for webgl1 limitation that loop counters need to be `const`
schema.uMaxSteps = DefineSpec('number');
}
const renderValues = {
...values,
uObjectId: ValueCell.create(id),
dLightCount: ValueCell.create(globals.dLightCount),
dColorMarker: ValueCell.create(globals.dColorMarker),
};
const shaderCode = DirectVolumeShaderCode;
const renderItem = createGraphicsRenderItem(ctx, 'triangles', shaderCode, schema, renderValues, materialId, transparency);
return createRenderable(renderItem, renderValues, state);
}