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gpu-dawn: do not build webgpu.h Dawn symbols in by default

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Helps hexops/mach#580

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-10-18 09:40:25 -07:00
parent 1abf5d6c45
commit 802b7cd6b0
2 changed files with 7 additions and 2 deletions
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7
libs/gpu-dawn/README.md
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@ -63,7 +63,12 @@ Dawn and other WebGPU implementations (like the Rust one) do not agree on a stan
When you call a Dawn `webgpu.h` function, Dawn internally diverts this call through a vtable which must be initialized using a call to `dawnProcSetProcs`. When you call a Dawn `webgpu.h` function, Dawn internally diverts this call through a vtable which must be initialized using a call to `dawnProcSetProcs`.
`mach/gpu-dawn` builds since Oct 17th 2022 no longer include the `webgpu.h` symbols by default. If you intend to actually call the WebGPU API, you should build [`dawn_proc.c`](https://raw.githubusercontent.com/hexops/dawn/generated-2022-08-06/out/Debug/gen/src/dawn/dawn_proc.c) as part of your application and call `dawnProcSetProcs`. `mach/gpu-dawn` builds since Oct 17th 2022 no longer include the `webgpu.h` symbols by default. If you intend to actually call the WebGPU API, you should build these two source files as part of your application:
1. [`dawn_proc.c`](https://raw.githubusercontent.com/hexops/dawn/generated-2022-08-06/out/Debug/gen/src/dawn/dawn_proc.c)
2. [`webgpu_dawn_native_proc.cpp`](https://raw.githubusercontent.com/hexops/dawn/generated-2022-08-06/out/Debug/gen/src/dawn/native/webgpu_dawn_native_proc.cpp)
And call `dawnProcSetProcs` to set up the proc table.
## A warning about API stability ## A warning about API stability

2
libs/gpu-dawn/sdk.zig
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@ -791,7 +791,7 @@ pub fn Sdk(comptime deps: anytype) type {
"libs/dawn/out/Debug/gen/src/dawn/native/", "libs/dawn/out/Debug/gen/src/dawn/native/",
}, },
.flags = flags.items, .flags = flags.items,
.excluding_contains = &.{ "test", "benchmark", "mock" }, .excluding_contains = &.{ "test", "benchmark", "mock", "webgpu_dawn_native_proc.cpp" },
}); });
// TODO(build-system): could allow enable_vulkan_validation_layers here. See src/dawn/native/BUILD.gn // TODO(build-system): could allow enable_vulkan_validation_layers here. See src/dawn/native/BUILD.gn