vulkan/nulldrv/null_driver_gen.cpp.tmpl

{{/*
 * Copyright 2015 The Android Open Source Project
 *
 * 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.
 */}}

{{Include "../api/templates/vulkan_common.tmpl"}}
{{Global "clang-format" (Strings "clang-format" "-style=file")}}
{{Macro "DefineGlobals" $}}
{{$ | Macro "null_driver_gen.cpp" | Format (Global "clang-format") | Write "null_driver_gen.cpp"}}


{{/*
-------------------------------------------------------------------------------
  Entry point
-------------------------------------------------------------------------------
*/}}
{{define "null_driver_gen.cpp"}}
/*
 * Copyright 2015 The Android Open Source Project
 *
 * 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.
 */
¶
// This file is generated. Do not edit manually!
// To regenerate: $ apic template ../api/vulkan.api null_driver_gen.cpp.tmpl
// Requires apic from https://android.googlesource.com/platform/tools/gpu/.
¶
#include <algorithm>
#include "null_driver.h"
¶
using namespace null_driver;
¶
namespace {
¶
struct NameProcEntry {
    const char* name;
    PFN_vkVoidFunction proc;
};
¶
template <size_t N>
PFN_vkVoidFunction LookupProcAddr(const NameProcEntry (&table)[N], const char* name) {
    auto entry = std::lower_bound(
        table, table + N, name,
        [](const NameProcEntry& e, const char* n) { return strcmp(e.name, n) < 0; });
    if (entry != (table + N) && strcmp(entry->name, name) == 0)
        return entry->proc;
    return nullptr;
}
¶
// The reinterpret_cast<..>(static_cast<..>(..)) business is there to ensure
// that the function declaration in null_driver.h matches the function pointer
// type in vulkan.h. If we just used reinterpret_cast<>, the compiler wouldn't
// tell us if there's a mistake in null_driver.h. A better solution would be to
// generate the declarations in null_driver.h.
const NameProcEntry kInstanceProcTbl[] = {«
  // clang-format off
  {{range $f := SortBy (AllCommands $) "FunctionName"}}
    {{if not (GetAnnotation $f "extension")}}
      {{if eq (Macro "Vtbl" $f) "Instance"}}
        {"{{Macro "FunctionName" $f}}", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vk{{Macro "FunctionNameNoPrefix" $f}}>({{Macro "FunctionNameNoPrefix" $f}}))},
      {{end}}
    {{end}}
  {{end}}
  // clang-format on
»};
¶
const NameProcEntry kDeviceProcTbl[] = {«
  // clang-format off
  {{range $f := SortBy (AllCommands $) "FunctionName"}}
    {{if not (GetAnnotation $f "extension")}}
      {{if eq (Macro "Vtbl" $f) "Device"}}
        {"{{Macro "FunctionName" $f}}", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vk{{Macro "FunctionNameNoPrefix" $f}}>({{Macro "FunctionNameNoPrefix" $f}}))},
      {{end}}
    {{end}}
  {{end}}
  // clang-format on
»};
¶
} // namespace
¶
namespace null_driver {
¶
PFN_vkVoidFunction LookupInstanceProcAddr(const char* name) {
    return LookupProcAddr(kInstanceProcTbl, name);
}
¶
PFN_vkVoidFunction LookupDeviceProcAddr(const char* name) {
    return LookupProcAddr(kDeviceProcTbl, name);
}
¶
} // namespace null_driver
¶
{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits the name of a function without the "vk" prefix.
-------------------------------------------------------------------------------
*/}}
{{define "FunctionNameNoPrefix"}}{{AssertType $ "Function"}}{{TrimPrefix "vk" $.Name}}{{end}}