1 /* 2 * Copyright 2018 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 // We use this header to include vk_mem_alloc.h to make sure we have the corect defines before we 9 // include vulkan.h inside of vk_mem_alloc.h 10 11 #ifndef VulkanMemoryAllocatorWrapper_DEFINED 12 #define VulkanMemoryAllocatorWrapper_DEFINED 13 14 // We only ever include this from src files which have already included vulkan. 15 #ifndef VULKAN_CORE_H_ 16 #error "vulkan_core.h has not been included before trying to include the GrVulkanMemoryAllocator" 17 #endif 18 19 // TODO: We currently lock down our API to Vulkan 1.1. When we update Skia to support 1.3 then we 20 // can remove this macro. We should also update the setting of the API level in the vma createInfo 21 // struct when we do this 22 #define VMA_VULKAN_VERSION 1001000 23 24 // vk_mem_alloc.h checks to see if VULKAN_H_ has been included before trying to include vulkan.h. 25 // However, some builds of Skia may not have access to vulkan.h and just have access to 26 // vulkan_core.h. So we pretend we've already included vulkan.h (if it already hasn't been) which 27 // will be fine for building internal skia files. If we do fake it out by defining VULKAN_H_ we 28 // need to make sure to undefine it incase outside client code does later try to include the 29 // real vulkan.h 30 #ifndef VULKAN_H_ 31 #define VULKAN_H_ 32 #define GR_NEEDED_TO_DEFINE_VULKAN_H 33 #endif 34 // TODO: b/306154574 - Investigate whether it's possible to handle the 35 // aforementioned preconditions while also allowing Skia to use the canonical 36 // VMA without a wrapper. Inclusion of `vk_mem_alloc.h` causes an ODR violation. 37 // This could cause an ODR issue if multiple users are including the same header 38 // and implementation but passing in different defines. If there will be uses of 39 // VMA outside of Skia, the client should instead tell Skia not to use VMA. 40 // Then they should wrap their own instance of VMA into an implementation of 41 // Skia's VulkanMemoryAllocator interface, and pass that object into context creation. 42 #include "vk_mem_alloc.h" // NO_G3_REWRITE 43 #ifdef GR_NEEDED_TO_DEFINE_VULKAN_H 44 #undef VULKAN_H_ 45 #endif 46 47 #endif 48