| /* |
| * 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 SK_API GrBackendSurfaceMutableState { |
| public: |
| GrBackendSurfaceMutableState() {} |
| |
| #ifdef SK_VULKAN |
| GrBackendSurfaceMutableState(VkImageLayout layout, uint32_t queueFamilyIndex) |
| : fVkState(layout, queueFamilyIndex) |
| , fBackend(GrBackend::kVulkan) |
| , fIsValid(true) {} |
| #endif |
| |
| GrBackendSurfaceMutableState(const GrBackendSurfaceMutableState& that); |
| GrBackendSurfaceMutableState& operator=(const GrBackendSurfaceMutableState& that); |
| |
| #ifdef SK_VULKAN |
| // If this class is not Vulkan backed it will return value of VK_IMAGE_LAYOUT_UNDEFINED. |
| // Otherwise it will return the VkImageLayout. |
| VkImageLayout getVkImageLayout() const { |
| if (this->isValid() && fBackend != GrBackendApi::kVulkan) { |
| return VK_IMAGE_LAYOUT_UNDEFINED; |
| } |
| return fVkState.getImageLayout(); |
| } |
| |
| // If this class is not Vulkan backed it will return value of VK_QUEUE_FAMILY_IGNORED. |
| // Otherwise it will return the VkImageLayout. |
| uint32_t getQueueFamilyIndex() const { |
| if (this->isValid() && fBackend != GrBackendApi::kVulkan) { |
| return VK_QUEUE_FAMILY_IGNORED; |
| } |
| return fVkState.getQueueFamilyIndex(); |
| } |
| #endif |
| |
| // Returns true if the backend mutable state has been initialized. |
| bool isValid() const { return fIsValid; } |
| |
| GrBackendApi backend() const { return fBackend; } |
| |
| private: |
| friend class GrBackendSurfaceMutableStateImpl; |
| friend class GrVkGpu; |
| |
| #ifdef SK_VULKAN |
| void setVulkanState(VkImageLayout layout, uint32_t queueFamilyIndex) { |
| SkASSERT(!this->isValid() || fBackend == GrBackendApi::kVulkan); |
| fVkState.setImageLayout(layout); |
| fVkState.setQueueFamilyIndex(queueFamilyIndex); |
| fBackend = GrBackendApi::kVulkan; |
| fIsValid = true; |
| } |
| #endif |
| |
| union { |
| char fPlaceholder; |
| #ifdef SK_VULKAN |
| GrVkSharedImageInfo fVkState; |
| #endif |
| }; |
| |
| GrBackend fBackend = GrBackendApi::kMock; |
| bool fIsValid = false; |
| }; |
| |
| #endif |