de2bca28cb
This will also expose the Vulkan precompilation path to immutable samplers. Change-Id: Ida31bd70455299fbcc8f4d728aa15179f7685311 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/295799 Reviewed-by: Greg Daniel <egdaniel@google.com> Commit-Queue: Robert Phillips <robertphillips@google.com>
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
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* Copyright 2020 Google LLC
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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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#include "gm/gm.h"
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// This test only works with the Vulkan backend.
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#ifdef SK_VULKAN
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#include "include/core/SkCanvas.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/gpu/GrContext.h"
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#include "tools/gpu/vk/VkYcbcrSamplerHelper.h"
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namespace skiagm {
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// This GM exercises the native YCbCr image format on Vulkan
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class YCbCrImageGM : public GpuGM {
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public:
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YCbCrImageGM() {
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this->setBGColor(0xFFCCCCCC);
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}
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protected:
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SkString onShortName() override {
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return SkString("ycbcrimage");
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}
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SkISize onISize() override {
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return SkISize::Make(2*kPad+kImageSize, 2*kPad+kImageSize);
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}
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DrawResult onDraw(GrContext* context, GrRenderTargetContext*, SkCanvas* canvas,
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SkString* errorMsg) override {
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if (context->backend() != GrBackendApi::kVulkan) {
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*errorMsg = "This GM requires a Vulkan context.";
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return DrawResult::kSkip;
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}
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VkYcbcrSamplerHelper ycbcrHelper(context);
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if (!ycbcrHelper.isYCbCrSupported()) {
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*errorMsg = "YCbCr sampling not supported.";
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return DrawResult::kSkip;
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}
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sk_sp<SkImage> ycbcrImage = ycbcrHelper.createI420Image(kImageSize, kImageSize);
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if (!ycbcrImage) {
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*errorMsg = "Failed to create I420 image.";
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return DrawResult::kFail;
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}
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SkPaint paint;
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paint.setFilterQuality(kLow_SkFilterQuality);
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canvas->drawImage(ycbcrImage, kPad, kPad, &paint);
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// The VkYcbcrSamplerHelper holds the actual memory for 'ycbcrImage' so nothing can
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// be allowed to exist beyond this method.
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GrFlushInfo flushInfo;
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flushInfo.fFlags = kSyncCpu_GrFlushFlag;
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context->flush(flushInfo);
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context->submit(true);
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return DrawResult::kOk;
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}
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private:
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static const int kImageSize = 112;
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static const int kPad = 8;
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typedef GpuGM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new YCbCrImageGM;)
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} // skiagm
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#endif // SK_VULKAN
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