| /* |
| * Copyright 2020 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrBackendSurfaceMutableState_DEFINED |
| #define GrBackendSurfaceMutableState_DEFINED |
| |
| #include "include/gpu/GrTypes.h" |
| |
| #ifdef SK_VULKAN |
| #include "include/private/GrVkTypesPriv.h" |
| #endif |
| |
| /** |
| * Since Skia and clients can both modify gpu textures and their connected state, Skia needs a way |
| * for clients to inform us if they have modifiend any of this state. In order to not need setters |
| * for every single API and state, we use this class to be a generic wrapper around all the mutable |
| * state. This class is used for calls that inform Skia of these texture/image state changes by the |
| * client as well as for requesting state changes to be done by Skia. The backend specific state |
| * that is wrapped by this class are: |
| * |
| * Vulkan: VkImageLayout and QueueFamilyIndex |
| */ |
| class GrBackendSurfaceMutableState { |
| public: |
| #ifdef SK_VULKAN |
| GrBackendSurfaceMutableState(VkImageLayout layout, uint32_t queueFamilyIndex) |
| : fVkState(layout, queueFamilyIndex) |
| , fBackend(GrBackend::kVulkan) {} |
| #endif |
| |
| GrBackendSurfaceMutableState& operator=(const GrBackendSurfaceMutableState& that) { |
| switch (fBackend) { |
| case GrBackend::kVulkan: |
| #ifdef SK_VULKAN |
| SkASSERT(that.fBackend == GrBackend::kVulkan); |
| fVkState = that.fVkState; |
| #endif |
| break; |
| |
| default: |
| (void)that; |
| SkUNREACHABLE; |
| } |
| fBackend = that.fBackend; |
| return *this; |
| } |
| |
| private: |
| friend class GrBackendSurfaceMutableStateImpl; |
| friend class GrVkGpu; |
| |
| union { |
| char fDummy; |
| #ifdef SK_VULKAN |
| GrVkSharedImageInfo fVkState; |
| #endif |
| }; |
| |
| GrBackend fBackend; |
| }; |
| |
| #endif |