mirror of
https://github.com/visgl/luma.gl.git
synced 2026-01-25 14:08:58 +00:00
19 lines
1.2 KiB
Markdown
19 lines
1.2 KiB
Markdown
# Using GPU Buffers
|
|
|
|
|
|
## Buffer Operations
|
|
|
|
The ability to copy memory between CPU, buffers and textures
|
|
|
|
| Dimension | WebGPU | WebGL2 | Description |
|
|
| --------------------- | ------ | ------ | ----------------------------------------------------- | |
|
|
| `writeBuffer` | ✅ | ✅ | Read a buffer synchronously |
|
|
| `readBuffer (sync)` | ❌ | ✅ | Read a buffer synchronously |
|
|
| `readBuffer (async)` | ✅ | ❌ \* | Read a buffer asynchronously |
|
|
| `copyBufferToBuffer` | ✅ | ✅ | Copy a buffer to another buffer without CPU roundtrip |
|
|
| `copyBufferToTexture` | ✅ | ✅ | Copy a buffer to a texture without CPU roundtrip |
|
|
| `copyTextureToBuffer` | ✅ | ✅ | Copy a buffer to a texture without CPU roundtrip |
|
|
|
|
Remarks:
|
|
- A WebGL extension does exist that enables asynchronous buffer reads, but it is not implemented on MacOS which is the primary development environment for luma.gl.
|
|
- Asynchronous reads are emulated by luma.gl by providing a Promise style API. The actual reads are still asynchronous though. |