GrVkMSAALoadManager.h

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/*
 * 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 GrVkMSAALoadManager_DEFINED
#define GrVkMSAALoadManager_DEFINED
 
#include "include/gpu/GrTypes.h"
#include "include/gpu/vk/GrVkTypes.h"
#include "src/gpu/ganesh/GrNativeRect.h"
#include "src/gpu/ganesh/vk/GrVkDescriptorSetManager.h"
 
class GrAttachment;
class GrSurface;
class GrVkCommandBuffer;
class GrVkGpu;
class GrVkImage;
class GrVkRenderPass;
struct SkIRect;
 
class GrVkMSAALoadManager {
public:
    GrVkMSAALoadManager();
 
    ~GrVkMSAALoadManager();
 
    bool loadMSAAFromResolve(GrVkGpu* gpu,
                             GrVkCommandBuffer* commandBuffer,
                             const GrVkRenderPass& renderPass,
                             GrAttachment* dst,
                             GrVkImage* src,
                             const SkIRect& srcRect);
 
    void destroyResources(GrVkGpu* gpu);
 
private:
    bool createMSAALoadProgram(GrVkGpu* gpu);
 
    // Everything below is only created once and shared by all msaa load pipelines
    VkShaderModule fVertShaderModule;
    VkShaderModule fFragShaderModule;
    VkPipelineShaderStageCreateInfo fShaderStageInfo[2];
 
    // All pipelines used by this class use the same VkPipelineLayout. Therefore, unlike regular
    // GrVkPipelines, we have the manager own the layout instead of the GrVkPipeline.
    VkPipelineLayout fPipelineLayout;
};
 
#endif