vulkan/libvulkan/get_proc_addr.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 "get_proc_addr.cpp" | Format (Global "clang-format") | Write "get_proc_addr.cpp"}}


{{/*
-------------------------------------------------------------------------------
  Entry point
-------------------------------------------------------------------------------
*/}}
{{define "get_proc_addr.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 get_proc_addr.cpp.tmpl
// Requires apic from https://android.googlesource.com/platform/tools/gpu/.
¶
#include <algorithm>
#include <log/log.h>
#include "loader.h"
using namespace vulkan;
¶
#define UNLIKELY(expr) __builtin_expect((expr), 0)
¶
namespace {
¶
struct NameProcEntry {
    const char* name;
    PFN_vkVoidFunction proc;
};
¶
struct NameOffsetEntry {
    const char* name;
    size_t offset;
};
¶
template <typename TEntry, size_t N>
const TEntry* FindProcEntry(const TEntry(&table)[N], const char* name) {
    auto entry = std::lower_bound(
        table, table + N, name,
        [](const TEntry& e, const char* n) { return strcmp(e.name, n) < 0; });
    if (entry != (table + N) && strcmp(entry->name, name) == 0)
        return entry;
    return nullptr;
}
¶
const NameProcEntry kInstanceProcTbl[] = {«
  // clang-format off
  {{range $f := SortBy (AllCommands $) "FunctionName"}}
    {{if eq (Macro "Vtbl" $f) "Instance"}}
      {"{{Macro "FunctionName" $f}}", reinterpret_cast<PFN_vkVoidFunction>({{Macro "FunctionName" $f}})},
    {{end}}
  {{end}}
  // clang-format on
»};
¶
const NameProcEntry kDeviceProcTbl[] = {«
  // clang-format off
  {{range $f := SortBy (AllCommands $) "FunctionName"}}
    {{if eq (Macro "Vtbl" $f) "Device"}}
      {"{{Macro "FunctionName" $f}}", reinterpret_cast<PFN_vkVoidFunction>({{Macro "FunctionName" $f}})},
    {{end}}
  {{end}}
  // clang-format on
»};
¶
const NameOffsetEntry kInstanceOffsetTbl[] = {«
  // clang-format off
  {{range $f := SortBy (AllCommands $) "FunctionName"}}
    {{if eq (Macro "Vtbl" $f) "Instance"}}
      {"{{Macro "FunctionName" $f}}", offsetof(InstanceVtbl, {{TrimPrefix "vk" (Macro "FunctionName" $f)}})},
    {{end}}
  {{end}}
  // clang-format on
»};
¶
const NameOffsetEntry kDeviceOffsetTbl[] = {«
  // clang-format off
  {{range $f := SortBy (AllCommands $) "FunctionName"}}
    {{if eq (Macro "Vtbl" $f) "Device"}}
      {"{{Macro "FunctionName" $f}}", offsetof(DeviceVtbl, {{TrimPrefix "vk" (Macro "FunctionName" $f)}})},
    {{end}}
  {{end}}
  // clang-format on
»};
¶
} // namespace
¶
namespace vulkan {
¶
PFN_vkVoidFunction GetGlobalInstanceProcAddr(const char* name) {
    if (strcmp(name, "vkGetDeviceProcAddr") == 0)
        return reinterpret_cast<PFN_vkVoidFunction>(vkGetDeviceProcAddr);
    const NameProcEntry* entry = FindProcEntry(kInstanceProcTbl, name);
    return entry ? entry->proc : nullptr;
}
¶
PFN_vkVoidFunction GetGlobalDeviceProcAddr(const char* name) {
    const NameProcEntry* entry = FindProcEntry(kDeviceProcTbl, name);
    return entry ? entry->proc : nullptr;
}
¶
PFN_vkVoidFunction GetSpecificInstanceProcAddr(const InstanceVtbl* vtbl,
                                               const char* name) {
    const NameOffsetEntry* entry = FindProcEntry(kInstanceOffsetTbl, name);
    if (!entry)
        return nullptr;
    const unsigned char* base = reinterpret_cast<const unsigned char*>(vtbl);
    return reinterpret_cast<PFN_vkVoidFunction>(
        const_cast<unsigned char*>(base) + entry->offset);
}
¶
PFN_vkVoidFunction GetSpecificDeviceProcAddr(const DeviceVtbl* vtbl,
                                             const char* name) {
    const NameOffsetEntry* entry = FindProcEntry(kDeviceOffsetTbl, name);
    if (!entry)
        return nullptr;
    const unsigned char* base = reinterpret_cast<const unsigned char*>(vtbl);
    return reinterpret_cast<PFN_vkVoidFunction>(
        const_cast<unsigned char*>(base) + entry->offset);
}
¶
bool LoadInstanceVtbl(VkInstance instance,
                      PFN_vkGetInstanceProcAddr get_proc_addr,
                      InstanceVtbl& vtbl) {«
    bool success = true;
    // clang-format off
    {{range $f := AllCommands $}}
      {{if eq (Macro "Vtbl" $f) "Instance"}}
    vtbl.{{TrimPrefix "vk" (Macro "FunctionName" $f)}} = §
        reinterpret_cast<{{Macro "FunctionPtrName" $f}}>(§
            get_proc_addr(instance, "{{Macro "FunctionName" $f}}"));
    if (UNLIKELY(!vtbl.{{TrimPrefix "vk" (Macro "FunctionName" $f)}})) {
        ALOGE("missing instance proc: %s", "{{Macro "FunctionName" $f}}");
        success = false;
    }
      {{end}}
    {{end}}
    // clang-format on
    return success;
»}
¶
bool LoadDeviceVtbl(VkDevice device,
                    PFN_vkGetDeviceProcAddr get_proc_addr,
                    DeviceVtbl& vtbl) {«
    bool success = true;
    // clang-format off
    {{range $f := AllCommands $}}
      {{if eq (Macro "Vtbl" $f) "Device"}}
    vtbl.{{TrimPrefix "vk" (Macro "FunctionName" $f)}} = §
        reinterpret_cast<{{Macro "FunctionPtrName" $f}}>(§
            get_proc_addr(device, "{{Macro "FunctionName" $f}}"));
    if (UNLIKELY(!vtbl.{{TrimPrefix "vk" (Macro "FunctionName" $f)}})) {
        ALOGE("missing device proc: %s", "{{Macro "FunctionName" $f}}");
        success = false;
    }
      {{end}}
    {{end}}
    // clang-format on
    return success;
»}
¶
} // namespace vulkan
¶
{{end}}