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a09baca0dd
This is supposed to make Viktor's game faster, but it's not clear to me that it actually does. I've left the code using the dart version of drawAtlas for now until Viktor can verify that it looks correct. I also added a wrapper for SkFilterQuality in the process of debugging SkCanvas.drawAtlas since all drawAtlas examples in Skia use FilterQuality.low. The bug which blocked me for so long turned out to be that SkCanvas.drawAtlas doesn't draw anything if antialiasing is turned on. Issue #138. R=abarth@google.com
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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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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#include "sky/engine/core/painting/Rect.h"
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#include "sky/engine/core/script/dom_dart_state.h"
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#include "sky/engine/tonic/dart_error.h"
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#include "sky/engine/tonic/dart_value.h"
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#include "base/logging.h"
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namespace blink {
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// Convert dart_rect._value[0...3] ==> SkRect
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Rect DartConverter<Rect>::FromDart(Dart_Handle dart_rect) {
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Rect result;
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result.is_null = true;
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if (Dart_IsNull(dart_rect))
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return result;
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Dart_Handle value =
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Dart_GetField(dart_rect, DOMDartState::Current()->value_handle());
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if (Dart_IsNull(value))
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return result;
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Dart_TypedData_Type type;
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float* data = nullptr;
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intptr_t num_elements = 0;
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Dart_TypedDataAcquireData(
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value, &type, reinterpret_cast<void**>(&data), &num_elements);
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DCHECK(!LogIfError(value));
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ASSERT(type == Dart_TypedData_kFloat32 && num_elements == 4);
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SkScalar* dest[] = {
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&result.sk_rect.fLeft,
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&result.sk_rect.fTop,
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&result.sk_rect.fRight,
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&result.sk_rect.fBottom
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};
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for (intptr_t i = 0; i < 4; ++i)
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*dest[i] = data[i];
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Dart_TypedDataReleaseData(value);
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result.is_null = false;
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return result;
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}
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Rect DartConverter<Rect>::FromArgumentsWithNullCheck(Dart_NativeArguments args,
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int index,
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Dart_Handle& exception) {
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Dart_Handle dart_rect = Dart_GetNativeArgument(args, index);
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DCHECK(!LogIfError(dart_rect));
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return FromDart(dart_rect);
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}
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} // namespace blink
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