19 lines
704 B
Markdown
19 lines
704 B
Markdown
# Dawn Internal Usages
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The `dawn-internal-usages` feature allows adding additional usage which affects how a texture is allocated, but does not affect frontend validation.
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One use case for this is so that Chromium can use an internal copyTextureToTexture command to implement copies from a WebGPU texture-backed canvas to other Web platform primitives when the swapchain texture was not explicitly created with CopySrc usage in Javascript.
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```
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Usage:
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wgpu::DawnTextureInternalUsageDescriptor internalDesc = {};
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internalDesc.internalUsage = wgpu::TextureUsage::CopySrc;
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wgpu::TextureDescriptor desc = {};
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// set properties of desc.
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desc.nextInChain = &internalDesc;
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device.createTexture(&desc);
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```
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