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49 lines
1.2 KiB
49 lines
1.2 KiB
4 months ago
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/*
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* Copyright 2020 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef VkYcbcrSamplerHelper_DEFINED
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#define VkYcbcrSamplerHelper_DEFINED
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#include "include/core/SkTypes.h"
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#ifdef SK_VULKAN
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#include "include/gpu/GrBackendSurface.h"
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class GrContext;
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class GrVkGpu;
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// This helper will create and hold data for a Vulkan YCbCr backend texture. This format is
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// particularly interesting because its sampler is immutable.
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class VkYcbcrSamplerHelper {
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public:
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VkYcbcrSamplerHelper(GrDirectContext*);
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~VkYcbcrSamplerHelper();
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bool isYCbCrSupported();
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bool createBackendTexture(uint32_t width, uint32_t height);
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const GrBackendTexture& backendTexture() const { return fTexture; }
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static int GetExpectedY(int x, int y, int width, int height);
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static std::pair<int, int> GetExpectedUV(int x, int y, int width, int height);
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private:
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GrVkGpu* vkGpu();
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GrDirectContext* fDContext;
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VkImage fImage = VK_NULL_HANDLE;
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VkDeviceMemory fImageMemory = VK_NULL_HANDLE;
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GrBackendTexture fTexture;
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};
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#endif // SK_VULKAN
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#endif // VkYcbcrSamplerHelper_DEFINED
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