Updates DawnInstanceDescriptor to pass in the Platform.
Notes:
- Separates ChainedStruct to be reusable without cpp header. (Also
updates native structs to directly use it.)
- Manually implements the descriptor in DawnNative.
- Reworks ChainUtils with mapping from struct to STypes.
- Updates the tests to use either SetPlatformForTesting which is still
required because DawnTest uses a "global" instance for all tests and
some tests require setting (and cleaning up) a test specific platform.
Bug: dawn:1374
Change-Id: I078c78f22c5137030cf3cf0e8358fe4373ee9c6c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132268
Reviewed-by: Austin Eng <enga@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Loko Kung <lokokung@google.com>
diff --git a/generator/templates/api_cpp_chained_struct.h b/generator/templates/api_cpp_chained_struct.h
new file mode 100644
index 0000000..59a0fd0
--- /dev/null
+++ b/generator/templates/api_cpp_chained_struct.h
@@ -0,0 +1,48 @@
+//* Copyright 2023 The Dawn Authors
+//*
+//* Licensed under the Apache License, Version 2.0 (the "License");
+//* you may not use this file except in compliance with the License.
+//* You may obtain a copy of the License at
+//*
+//* http://www.apache.org/licenses/LICENSE-2.0
+//*
+//* Unless required by applicable law or agreed to in writing, software
+//* distributed under the License is distributed on an "AS IS" BASIS,
+//* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//* See the License for the specific language governing permissions and
+//* limitations under the License.
+{% set API = metadata.api.upper() %}
+{% if 'dawn' in enabled_tags %}
+ #ifdef __EMSCRIPTEN__
+ #error "Do not include this header. Emscripten already provides headers needed for {{metadata.api}}."
+ #endif
+{% endif %}
+#ifndef {{API}}_CPP_CHAINED_STRUCT_H_
+#define {{API}}_CPP_CHAINED_STRUCT_H_
+
+// This header file declares the ChainedStruct structures separately from the {{metadata.api}}
+// headers so that dependencies can directly extend structures without including the larger header
+// which exposes capabilities that may require correctly set proc tables.
+namespace {{metadata.namespace}} {
+
+ namespace detail {
+ constexpr size_t ConstexprMax(size_t a, size_t b) {
+ return a > b ? a : b;
+ }
+ } // namespace detail
+
+ enum class SType : uint32_t;
+
+ struct ChainedStruct {
+ ChainedStruct const * nextInChain = nullptr;
+ SType sType = SType(0u);
+ };
+
+ struct ChainedStructOut {
+ ChainedStructOut * nextInChain = nullptr;
+ SType sType = SType(0u);
+ };
+
+} // namespace {{metadata.namespace}}}
+
+#endif // {{API}}_CPP_CHAINED_STRUCT_H_
