src/webgpu/constants.ts

import { ResolveType } from '../common/framework/params_builder.js';

export const GPUConst = {
  BufferUsage: {
    MAP_READ: 0x0001,
    MAP_WRITE: 0x0002,
    COPY_SRC: 0x0004,
    COPY_DST: 0x0008,
    INDEX: 0x0010,
    VERTEX: 0x0020,
    UNIFORM: 0x0040,
    STORAGE: 0x0080,
    INDIRECT: 0x0100,
    QUERY_RESOLVE: 0x0200,
  },

  TextureUsage: {
    COPY_SRC: 0x01,
    COPY_DST: 0x02,
    SAMPLED: 0x04,
    STORAGE: 0x08,
    OUTPUT_ATTACHMENT: 0x10,
  },

  ColorWrite: {
    RED: 0x1,
    GREEN: 0x2,
    BLUE: 0x4,
    ALPHA: 0x8,
    ALL: 0xf,
  },

  ShaderStage: {
    VERTEX: 0x1,
    FRAGMENT: 0x2,
    COMPUTE: 0x4,
  },

  MapMode: {
    READ: 0x1,
    WRITE: 0x2,
  },
} as const;

// Type ensures every field is specified.
export const DefaultLimits: ResolveType<Required<Readonly<GPULimits>>> = {
  maxBindGroups: 4,
  maxDynamicUniformBuffersPerPipelineLayout: 8,
  maxDynamicStorageBuffersPerPipelineLayout: 4,
  maxSampledTexturesPerShaderStage: 16,
  maxSamplersPerShaderStage: 16,
  maxStorageBuffersPerShaderStage: 4,
  maxStorageTexturesPerShaderStage: 4,
  maxUniformBuffersPerShaderStage: 12,
  maxUniformBufferBindingSize: 16384,
};