VulkanWindowContext_android.cpp

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/*
 * Copyright 2023 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#include "tools/window/android/WindowContextFactory_android.h"
 
#include "tools/window/VulkanWindowContext.h"
 
#include "tools/gpu/vk/VkTestUtils.h"
 
namespace skwindow {
 
std::unique_ptr<WindowContext> MakeVulkanForAndroid(ANativeWindow* window,
                                                    const DisplayParams& params) {
    PFN_vkGetInstanceProcAddr instProc;
    if (!sk_gpu_test::LoadVkLibraryAndGetProcAddrFuncs(&instProc)) {
        return nullptr;
    }
 
    auto createVkSurface = [window, instProc] (VkInstance instance) -> VkSurfaceKHR {
        PFN_vkCreateAndroidSurfaceKHR createAndroidSurfaceKHR =
                (PFN_vkCreateAndroidSurfaceKHR) instProc(instance, "vkCreateAndroidSurfaceKHR");
 
        if (!window) {
            return VK_NULL_HANDLE;
        }
        VkSurfaceKHR surface;
 
        VkAndroidSurfaceCreateInfoKHR surfaceCreateInfo;
        memset(&surfaceCreateInfo, 0, sizeof(VkAndroidSurfaceCreateInfoKHR));
        surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_ANDROID_SURFACE_CREATE_INFO_KHR;
        surfaceCreateInfo.pNext = nullptr;
        surfaceCreateInfo.flags = 0;
        surfaceCreateInfo.window = window;
 
        VkResult res = createAndroidSurfaceKHR(instance, &surfaceCreateInfo,
                                               nullptr, &surface);
        return (VK_SUCCESS == res) ? surface : VK_NULL_HANDLE;
    };
 
    auto canPresent = [](VkInstance, VkPhysicalDevice, uint32_t) { return true; };
 
    std::unique_ptr<WindowContext> ctx(
            new internal::VulkanWindowContext(params, createVkSurface, canPresent, instProc));
    if (!ctx->isValid()) {
        return nullptr;
    }
    return ctx;
}
 
}  // namespace skwindow