mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
14d52769dc
Reverts b12088a1f6
After some investigation, it appears that ClearType rendering is
unsuitable when
- the render target has translucent pixels underneath rendered text, or
- the render ouput is rotated, scaled, subpixel-translated, or otherwise
transformed before display.
This necessitates avoiding ClearType when rendering into transparent
bitmaps.
Unfortunately, a commmon use-case for transparent bitmaps is buffered
component images. Even if ClearType were enabled for opaque targets,
ClearType text could then end up displaying next to non-ClearType text
rendered to an intermediate texture, leading to an inconsistent
appearance.
There's also not a straightforward way of exposing a ClearType rendering
option in all of the places that it would be required, and a change of
this size is difficult to justify given that subpixel text rendering
controls would only have an effect on Windows.
571 lines
22 KiB
C++
571 lines
22 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 (DxgiAdapter::Ptr adapter)
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{
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return create (Direct2DDeviceContext::create (adapter));
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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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result.deviceContext = context;
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if (const auto hr = result.deviceContext->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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DxgiAdapter::Ptr findAdapter (const DxgiAdapters& adapters) const
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{
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return findAdapter (adapters, deviceContext);
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}
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ComSmartPtr<ID2D1DeviceContext1> deviceContext;
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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))
|
|
{
|
|
release();
|
|
return hr;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
Rectangle<int> getSize() const
|
|
{
|
|
if (buffer == nullptr)
|
|
return {};
|
|
|
|
auto size = buffer->GetPixelSize();
|
|
return { (int) size.width, (int) size.height };
|
|
}
|
|
|
|
static constexpr uint32 swapChainFlags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
|
|
static constexpr uint32 presentSyncInterval = 1;
|
|
static constexpr uint32 presentFlags = 0;
|
|
ComSmartPtr<IDXGISwapChain1> chain;
|
|
ComSmartPtr<ID2D1Bitmap1> buffer;
|
|
std::optional<WindowsScopedEvent> swapChainEvent;
|
|
|
|
enum class State
|
|
{
|
|
idle,
|
|
chainAllocated,
|
|
bufferAllocated,
|
|
bufferFilled
|
|
};
|
|
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
|