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https://github.com/juce-framework/JUCE.git
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c57041e5bc
Previously, IDXGISwapChain::Present was called on a background thread, which made it difficult to avoid race conditions. e.g. during a live-resize of a window, we would occasionally draw old incomplete frames instead of new frames at the correct size. The new approach moves the Present call to the main thread via AsyncUpdater. We attempt to present whenever the swap event wakes, and whenever a frame is drawn. Only a single Present call may be made after the swap event wakes. Subsequent Present calls will be ignored until the next time the swap event wakes.
558 lines
21 KiB
C++
558 lines
21 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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static ComSmartPtr<ID2D1GradientStopCollection> makeGradientStopCollection (const ColourGradient& gradient,
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ComSmartPtr<ID2D1DeviceContext1> deviceContext,
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[[maybe_unused]] Direct2DMetrics* metrics) noexcept
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{
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JUCE_D2DMETRICS_SCOPED_ELAPSED_TIME (metrics, createGradientTime);
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const int numColors = gradient.getNumColours();
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std::vector<D2D1_GRADIENT_STOP> stops ((size_t) numColors);
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for (auto [index, stop] : enumerate (stops, int{}))
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{
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stop.color = D2DUtilities::toCOLOR_F (gradient.getColour (index));
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stop.position = (FLOAT) gradient.getColourPosition (index);
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}
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ComSmartPtr<ID2D1GradientStopCollection> result;
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deviceContext->CreateGradientStopCollection (stops.data(), (UINT32) stops.size(), result.resetAndGetPointerAddress());
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return result;
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}
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class LinearGradientCache
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{
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public:
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ComSmartPtr<ID2D1LinearGradientBrush> get (const ColourGradient& gradient,
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ComSmartPtr<ID2D1DeviceContext1> deviceContext,
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Direct2DMetrics* metrics)
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{
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jassert (! gradient.isRadial);
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return cache.get (gradient, [&deviceContext, &metrics] (const auto& key)
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{
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const auto gradientStops = makeGradientStopCollection (key, deviceContext, metrics);
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const auto p1 = key.point1;
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const auto p2 = key.point2;
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const auto linearGradientBrushProperties = D2D1::LinearGradientBrushProperties ({ p1.x, p1.y }, { p2.x, p2.y });
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const D2D1_BRUSH_PROPERTIES brushProps { 1.0f, D2D1::IdentityMatrix() };
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ComSmartPtr<ID2D1LinearGradientBrush> result;
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deviceContext->CreateLinearGradientBrush (linearGradientBrushProperties,
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brushProps,
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gradientStops,
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result.resetAndGetPointerAddress());
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return result;
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});
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}
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private:
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LruCache<ColourGradient, ComSmartPtr<ID2D1LinearGradientBrush>> cache;
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};
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class RadialGradientCache
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{
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public:
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ComSmartPtr<ID2D1RadialGradientBrush> get (const ColourGradient& gradient,
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ComSmartPtr<ID2D1DeviceContext1> deviceContext,
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Direct2DMetrics* metrics)
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{
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jassert (gradient.isRadial);
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return cache.get (gradient, [&deviceContext, &metrics] (const auto& key)
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{
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const auto gradientStops = makeGradientStopCollection (key, deviceContext, metrics);
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const auto p1 = key.point1;
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const auto p2 = key.point2;
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const auto r = p1.getDistanceFrom (p2);
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const auto radialGradientBrushProperties = D2D1::RadialGradientBrushProperties ({ p1.x, p1.y }, {}, r, r);
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const D2D1_BRUSH_PROPERTIES brushProps { 1.0F, D2D1::IdentityMatrix() };
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ComSmartPtr<ID2D1RadialGradientBrush> result;
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deviceContext->CreateRadialGradientBrush (radialGradientBrushProperties,
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brushProps,
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gradientStops,
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result.resetAndGetPointerAddress());
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return result;
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});
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}
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private:
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LruCache<ColourGradient, ComSmartPtr<ID2D1RadialGradientBrush>> cache;
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};
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class RectangleListSpriteBatch
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{
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public:
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RectangleListSpriteBatch() = default;
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~RectangleListSpriteBatch()
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{
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release();
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}
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void release()
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{
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whiteRectangle = nullptr;
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spriteBatches = {};
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destinations.free();
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destinationsCapacity = 0;
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}
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template <typename TransformRectangle>
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void fillRectangles (ComSmartPtr<ID2D1DeviceContext1> deviceContext,
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const RectangleList<float>& rectangles,
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const Colour colour,
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TransformRectangle&& transformRectangle,
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[[maybe_unused]] Direct2DMetrics* metrics)
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{
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if (rectangles.isEmpty())
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return;
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JUCE_D2DMETRICS_SCOPED_ELAPSED_TIME (metrics, spriteBatchTime)
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auto numRectanglesPainted = 0;
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while (numRectanglesPainted < rectangles.getNumRectangles())
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{
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auto numRectanglesRemaining = rectangles.getNumRectangles() - numRectanglesPainted;
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auto spriteBatchSize = isPowerOfTwo (numRectanglesRemaining) ? numRectanglesRemaining : (nextPowerOfTwo (numRectanglesRemaining) >> 1);
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{
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JUCE_D2DMETRICS_SCOPED_ELAPSED_TIME (metrics, spriteBatchSetupTime);
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if (destinationsCapacity < (size_t) spriteBatchSize)
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{
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destinations.calloc (spriteBatchSize);
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destinationsCapacity = (size_t) spriteBatchSize;
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}
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auto destination = destinations.getData();
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for (int i = numRectanglesPainted; i < numRectanglesPainted + spriteBatchSize; ++i)
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{
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auto r = rectangles.getRectangle (i);
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r = transformRectangle (r);
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*destination = D2DUtilities::toRECT_F (r);
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++destination;
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}
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}
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if (! whiteRectangle)
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{
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JUCE_D2DMETRICS_SCOPED_ELAPSED_TIME (metrics, createSpriteSourceTime);
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auto hr = deviceContext->CreateCompatibleRenderTarget (D2D1_SIZE_F { (float) rectangleSize, (float) rectangleSize },
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D2D1_SIZE_U { rectangleSize, rectangleSize },
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D2D1_PIXEL_FORMAT { DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_PREMULTIPLIED },
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whiteRectangle.resetAndGetPointerAddress());
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if (FAILED (hr))
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return;
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whiteRectangle->BeginDraw();
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whiteRectangle->Clear (D2D1_COLOR_F { 1.0f, 1.0f, 1.0f, 1.0f });
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whiteRectangle->EndDraw();
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}
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ComSmartPtr<ID2D1Bitmap> bitmap;
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if (auto hr = whiteRectangle->GetBitmap (bitmap.resetAndGetPointerAddress()); SUCCEEDED (hr))
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{
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ComSmartPtr<ID2D1DeviceContext3> deviceContext3;
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if (hr = deviceContext->QueryInterface<ID2D1DeviceContext3> (deviceContext3.resetAndGetPointerAddress()); SUCCEEDED (hr))
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{
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auto d2dColour = D2DUtilities::toCOLOR_F (colour);
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auto spriteBatch = getSpriteBatch (*deviceContext3, (uint32) spriteBatchSize);
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if (spriteBatch == nullptr)
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return;
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auto setCount = jmin ((uint32) spriteBatchSize, spriteBatch->GetSpriteCount());
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auto addCount = (uint32) spriteBatchSize > setCount ? (uint32) spriteBatchSize - setCount : 0;
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if (setCount != 0)
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{
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JUCE_D2DMETRICS_SCOPED_ELAPSED_TIME (metrics, setSpritesTime);
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spriteBatch->SetSprites (0, setCount, destinations.getData(), nullptr, &d2dColour, nullptr, sizeof (D2D1_RECT_F), 0, 0, 0);
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}
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if (addCount != 0)
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{
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JUCE_D2DMETRICS_SCOPED_ELAPSED_TIME (metrics, addSpritesTime);
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spriteBatch->AddSprites (addCount, destinations.getData() + setCount, nullptr, &d2dColour, nullptr, sizeof (D2D1_RECT_F), 0, 0, 0);
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}
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JUCE_D2DMETRICS_SCOPED_ELAPSED_TIME (metrics, drawSpritesTime);
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deviceContext3->SetAntialiasMode (D2D1_ANTIALIAS_MODE_ALIASED);
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deviceContext3->DrawSpriteBatch (spriteBatch, bitmap);
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deviceContext3->SetAntialiasMode (D2D1_ANTIALIAS_MODE_PER_PRIMITIVE);
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}
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}
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numRectanglesPainted += spriteBatchSize;
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}
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}
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private:
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ComSmartPtr<ID2D1SpriteBatch> getSpriteBatch (ID2D1DeviceContext3& dc, uint32 key)
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{
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return spriteBatches.get ((uint32) key, [&dc] (auto) -> ComSmartPtr<ID2D1SpriteBatch>
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{
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ComSmartPtr<ID2D1SpriteBatch> result;
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if (const auto hr = dc.CreateSpriteBatch (result.resetAndGetPointerAddress()); SUCCEEDED (hr))
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return result;
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return nullptr;
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});
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}
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static constexpr uint32 rectangleSize = 32;
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ComSmartPtr<ID2D1BitmapRenderTarget> whiteRectangle;
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HeapBlock<D2D1_RECT_F> destinations;
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size_t destinationsCapacity = 0;
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LruCache<uint32, ComSmartPtr<ID2D1SpriteBatch>, 8> spriteBatches;
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};
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class Direct2DDeviceResources
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{
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public:
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static DxgiAdapter::Ptr findAdapter (const DxgiAdapters& adapters, ID2D1Bitmap1* bitmap)
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{
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if (bitmap == nullptr)
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return {};
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ComSmartPtr<IDXGISurface> surface;
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bitmap->GetSurface (surface.resetAndGetPointerAddress());
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if (surface == nullptr)
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return {};
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ComSmartPtr<IDXGIDevice> device;
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JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE ("-Wlanguage-extension-token")
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surface->GetDevice (__uuidof (device), (void**) device.resetAndGetPointerAddress());
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JUCE_END_IGNORE_WARNINGS_GCC_LIKE
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return findAdapter (adapters, device);
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}
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static DxgiAdapter::Ptr findAdapter (const DxgiAdapters& dxgiAdapters, IDXGIDevice* dxgiDevice)
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{
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if (dxgiDevice == nullptr)
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return {};
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ComSmartPtr<IDXGIAdapter> adapter;
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dxgiDevice->GetAdapter (adapter.resetAndGetPointerAddress());
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if (adapter == nullptr)
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return {};
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ComSmartPtr<IDXGIAdapter1> adapter1;
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adapter.QueryInterface (adapter1);
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if (adapter1 == nullptr)
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return {};
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const auto adapterLuid = getLUID (adapter1);
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const auto& adapters = dxgiAdapters.getAdapterArray();
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const auto it = std::find_if (adapters.begin(), adapters.end(), [&] (DxgiAdapter::Ptr ptr)
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{
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const auto tie = [] (const LUID& x) { return std::tie (x.LowPart, x.HighPart); };
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const auto thisLuid = getLUID (ptr->dxgiAdapter);
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return tie (thisLuid) == tie (adapterLuid);
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});
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if (it == adapters.end())
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return {};
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return *it;
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}
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static DxgiAdapter::Ptr findAdapter (const DxgiAdapters& dxgiAdapters, ID2D1DeviceContext1* context)
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{
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if (context == nullptr)
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return {};
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ComSmartPtr<ID2D1Device> device;
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context->GetDevice (device.resetAndGetPointerAddress());
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if (device == nullptr)
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return {};
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ComSmartPtr<IDXGIDevice> dxgiDevice;
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device.QueryInterface (dxgiDevice);
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return findAdapter (dxgiAdapters, dxgiDevice);
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}
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static LUID getLUID (ComSmartPtr<IDXGIAdapter1> adapter)
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{
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DXGI_ADAPTER_DESC1 desc{};
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adapter->GetDesc1 (&desc);
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return desc.AdapterLuid;
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}
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static std::optional<Direct2DDeviceResources> create (ComSmartPtr<ID2D1DeviceContext1> context)
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{
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if (context == nullptr)
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return {};
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Direct2DDeviceResources result;
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if (const auto hr = context->CreateSolidColorBrush (D2D1::ColorF (0.0f, 0.0f, 0.0f, 1.0f),
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result.colourBrush.resetAndGetPointerAddress());
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FAILED (hr))
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{
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jassertfalse;
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return {};
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}
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result.rectangleListSpriteBatch = std::make_unique<RectangleListSpriteBatch>();
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return result;
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}
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ComSmartPtr<ID2D1SolidColorBrush> colourBrush;
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LinearGradientCache linearGradientCache;
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RadialGradientCache radialGradientCache;
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std::unique_ptr<RectangleListSpriteBatch> rectangleListSpriteBatch;
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private:
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Direct2DDeviceResources() = default;
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};
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class SwapChain
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{
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public:
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SwapChain() = default;
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HRESULT create (HWND hwnd, Rectangle<int> size, DxgiAdapter::Ptr adapter)
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{
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if (chain != nullptr || hwnd == nullptr)
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return S_OK;
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SharedResourcePointer<DirectX> directX;
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auto dxgiFactory = directX->adapters.getFactory();
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if (dxgiFactory == nullptr || adapter->direct3DDevice == nullptr)
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return E_FAIL;
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buffer = nullptr;
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chain = nullptr;
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// Make the waitable swap chain
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// Create the swap chain with premultiplied alpha support for transparent windows
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DXGI_SWAP_CHAIN_DESC1 swapChainDescription = {};
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swapChainDescription.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
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swapChainDescription.Width = (UINT) size.getWidth();
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swapChainDescription.Height = (UINT) size.getHeight();
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swapChainDescription.SampleDesc.Count = 1;
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swapChainDescription.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
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swapChainDescription.BufferCount = 2;
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swapChainDescription.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
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swapChainDescription.Flags = swapChainFlags;
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swapChainDescription.Scaling = DXGI_SCALING_STRETCH;
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swapChainDescription.AlphaMode = DXGI_ALPHA_MODE_PREMULTIPLIED;
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if (const auto hr = dxgiFactory->CreateSwapChainForComposition (adapter->direct3DDevice,
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&swapChainDescription,
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nullptr,
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chain.resetAndGetPointerAddress());
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FAILED (hr))
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{
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return hr;
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}
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// Get the waitable swap chain presentation event and set the maximum frame latency
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ComSmartPtr<IDXGISwapChain2> chain2;
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if (const auto hr = chain.QueryInterface (chain2); FAILED (hr))
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return hr;
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if (chain2 == nullptr)
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return E_FAIL;
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swapChainEvent.emplace (chain2->GetFrameLatencyWaitableObject());
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if (swapChainEvent->getHandle() == INVALID_HANDLE_VALUE)
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return E_NOINTERFACE;
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if (const auto hr = chain2->SetMaximumFrameLatency (1); SUCCEEDED (hr))
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state = State::chainAllocated;
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return S_OK;
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}
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HRESULT createBuffer (ComSmartPtr<ID2D1DeviceContext> deviceContext)
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{
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if (deviceContext == nullptr || chain == nullptr || buffer != nullptr)
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return S_OK;
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ComSmartPtr<IDXGISurface> surface;
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JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE ("-Wlanguage-extension-token")
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if (const auto hr = chain->GetBuffer (0, __uuidof (surface), reinterpret_cast<void**> (surface.resetAndGetPointerAddress())); FAILED (hr))
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return hr;
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JUCE_END_IGNORE_WARNINGS_GCC_LIKE
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D2D1_BITMAP_PROPERTIES1 bitmapProperties{};
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bitmapProperties.bitmapOptions = D2D1_BITMAP_OPTIONS_TARGET | D2D1_BITMAP_OPTIONS_CANNOT_DRAW;
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bitmapProperties.pixelFormat.format = DXGI_FORMAT_B8G8R8A8_UNORM;
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bitmapProperties.pixelFormat.alphaMode = D2D1_ALPHA_MODE_PREMULTIPLIED;
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if (const auto hr = deviceContext->CreateBitmapFromDxgiSurface (surface, bitmapProperties, buffer.resetAndGetPointerAddress()); FAILED (hr))
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return hr;
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state = State::bufferAllocated;
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return S_OK;
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}
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void release()
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{
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buffer = nullptr;
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chain = nullptr;
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state = State::idle;
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}
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bool canPaint() const
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{
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return chain != nullptr && buffer != nullptr && state >= State::bufferAllocated;
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}
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HRESULT resize (Rectangle<int> newSize, ComSmartPtr<ID2D1DeviceContext> deviceContext)
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{
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if (chain == nullptr)
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return E_FAIL;
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auto scaledSize = newSize.getUnion ({ Direct2DGraphicsContext::minFrameSize, Direct2DGraphicsContext::minFrameSize })
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.getIntersection ({ Direct2DGraphicsContext::maxFrameSize, Direct2DGraphicsContext::maxFrameSize });
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buffer = nullptr;
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state = State::chainAllocated;
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if (const auto hr = chain->ResizeBuffers (0, (UINT) scaledSize.getWidth(), (UINT) scaledSize.getHeight(), DXGI_FORMAT_B8G8R8A8_UNORM, swapChainFlags); FAILED (hr))
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return hr;
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if (const auto hr = createBuffer (deviceContext); FAILED (hr))
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{
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release();
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return hr;
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}
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return S_OK;
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}
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Rectangle<int> getSize() const
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{
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if (buffer == nullptr)
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return {};
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auto size = buffer->GetPixelSize();
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return { (int) size.width, (int) size.height };
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}
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static constexpr uint32 swapChainFlags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
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static constexpr uint32 presentSyncInterval = 1;
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static constexpr uint32 presentFlags = 0;
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ComSmartPtr<IDXGISwapChain1> chain;
|
|
ComSmartPtr<ID2D1Bitmap1> buffer;
|
|
std::optional<WindowsScopedEvent> swapChainEvent;
|
|
|
|
enum class State
|
|
{
|
|
idle,
|
|
chainAllocated,
|
|
bufferAllocated,
|
|
};
|
|
State state = State::idle;
|
|
};
|
|
|
|
//==============================================================================
|
|
/* DirectComposition
|
|
Using DirectComposition enables transparent windows and smoother window
|
|
resizing
|
|
|
|
This class builds a simple DirectComposition tree that ultimately contains
|
|
the swap chain
|
|
*/
|
|
class CompositionTree
|
|
{
|
|
public:
|
|
static std::optional<CompositionTree> create (IDXGIDevice* dxgiDevice, HWND hwnd, IDXGISwapChain1* swapChain)
|
|
{
|
|
if (dxgiDevice == nullptr)
|
|
return {};
|
|
|
|
CompositionTree result;
|
|
|
|
JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE ("-Wlanguage-extension-token")
|
|
if (const auto hr = DCompositionCreateDevice (dxgiDevice,
|
|
__uuidof (IDCompositionDevice),
|
|
reinterpret_cast<void**> (result.compositionDevice.resetAndGetPointerAddress()));
|
|
FAILED (hr))
|
|
{
|
|
return {};
|
|
}
|
|
JUCE_END_IGNORE_WARNINGS_GCC_LIKE
|
|
|
|
if (const auto hr = result.compositionDevice->CreateTargetForHwnd (hwnd, FALSE, result.compositionTarget.resetAndGetPointerAddress()); FAILED (hr))
|
|
return {};
|
|
if (const auto hr = result.compositionDevice->CreateVisual (result.compositionVisual.resetAndGetPointerAddress()); FAILED (hr))
|
|
return {};
|
|
if (const auto hr = result.compositionTarget->SetRoot (result.compositionVisual); FAILED (hr))
|
|
return {};
|
|
if (const auto hr = result.compositionVisual->SetContent (swapChain); FAILED (hr))
|
|
return {};
|
|
if (const auto hr = result.compositionDevice->Commit(); FAILED (hr))
|
|
return {};
|
|
|
|
return result;
|
|
}
|
|
|
|
private:
|
|
CompositionTree() = default;
|
|
|
|
ComSmartPtr<IDCompositionDevice> compositionDevice;
|
|
ComSmartPtr<IDCompositionTarget> compositionTarget;
|
|
ComSmartPtr<IDCompositionVisual> compositionVisual;
|
|
};
|
|
|
|
} // namespace juce
|