vulkan: rewrite top of loader

The top is responsible for layer discovery and chaining, and the bottom is
like a regular layer that is always enabled and is inserted just before
the driver.  Make the separation clear by rewriting the top and stripping
the layer managment code from loader.cpp.

Change-Id: I64e525e27bd4c297bccd94a1eb9b88e28088e85d

1 files changed, 61 insertions, 0 deletions

diff --git a/vulkan/libvulkan/api.h b/vulkan/libvulkan/api.h
new file mode 100644
index 0000000000..ded7d1779f
--- /dev/null
+++ b/vulkan/libvulkan/api.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2016 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.
+ */
+
+#ifndef LIBVULKAN_API_H
+#define LIBVULKAN_API_H 1
+
+#include <vulkan/vulkan.h>
+#include "api_gen.h"
+#include "driver.h"
+
+namespace vulkan {
+namespace api {
+
+// clang-format off
+VKAPI_ATTR VkResult CreateInstance(const VkInstanceCreateInfo* pCreateInfo, const VkAllocationCallbacks* pAllocator, VkInstance* pInstance);
+VKAPI_ATTR void DestroyInstance(VkInstance instance, const VkAllocationCallbacks* pAllocator);
+VKAPI_ATTR VkResult CreateDevice(VkPhysicalDevice physicalDevice, const VkDeviceCreateInfo* pCreateInfo, const VkAllocationCallbacks* pAllocator, VkDevice* pDevice);
+VKAPI_ATTR void DestroyDevice(VkDevice device, const VkAllocationCallbacks* pAllocator);
+VKAPI_ATTR VkResult EnumerateInstanceLayerProperties(uint32_t* pPropertyCount, VkLayerProperties* pProperties);
+VKAPI_ATTR VkResult EnumerateInstanceExtensionProperties(const char* pLayerName, uint32_t* pPropertyCount, VkExtensionProperties* pProperties);
+VKAPI_ATTR VkResult EnumerateDeviceLayerProperties(VkPhysicalDevice physicalDevice, uint32_t* pPropertyCount, VkLayerProperties* pProperties);
+VKAPI_ATTR VkResult EnumerateDeviceExtensionProperties(VkPhysicalDevice physicalDevice, const char* pLayerName, uint32_t* pPropertyCount, VkExtensionProperties* pProperties);
+// clang-format on
+
+inline InstanceData& GetData(VkInstance instance) {
+    return driver::GetData(instance).opaque_api_data;
+}
+
+inline InstanceData& GetData(VkPhysicalDevice physical_dev) {
+    return driver::GetData(physical_dev).opaque_api_data;
+}
+
+inline DeviceData& GetData(VkDevice dev) {
+    return driver::GetData(dev).opaque_api_data;
+}
+
+inline DeviceData& GetData(VkQueue queue) {
+    return driver::GetData(queue).opaque_api_data;
+}
+
+inline DeviceData& GetData(VkCommandBuffer cmd) {
+    return driver::GetData(cmd).opaque_api_data;
+}
+
+}  // namespace api
+}  // namespace vulkan
+
+#endif  // LIBVULKAN_API_H