android_frameworks_base/libs/hwui/DeferredDisplayList.h
Chris Craik c3566d0642 DisplayList draw operation reordering
bug:8037003

The reordering enables similar operations to draw together, minimizing the
OpenGL state change operations that go inbetween draws. Eventually, multiple
complete canvas draw operations will be merged (into a single glDrawArrays call,
for example)

Reorders DisplayList draw operations when:

-They can move backwards in the command stream to be after similar
operations without violating draw ordering

-The OpenGLRenderer is in a simple, replayable state (no complex clip,
or filter/shadow etc)

Also adds two system properties to control the deferral/reordering:
    "debug.hwui.disable_draw_defer"
    "debug.hwui.disable_draw_reorder"
which can be set to "true" to control the display list manipulation

Change-Id: I5e89f3cb0ea2d2afd3e15c64d7f32b8406777a32
2013-02-15 13:30:09 -08:00

79 lines
2.1 KiB
C++

/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_HWUI_DEFERRED_DISPLAY_LIST_H
#define ANDROID_HWUI_DEFERRED_DISPLAY_LIST_H
#include <utils/Errors.h>
#include <utils/Vector.h>
#include "Matrix.h"
#include "Rect.h"
namespace android {
namespace uirenderer {
class DrawOp;
class DrawOpBatch;
class OpenGLRenderer;
class SkiaShader;
class DeferredDisplayList {
public:
DeferredDisplayList() { clear(); }
~DeferredDisplayList() { clear(); }
enum OpBatchId {
kOpBatch_None = -1, // Don't batch
kOpBatch_Bitmap,
kOpBatch_Patch,
kOpBatch_AlphaVertices,
kOpBatch_Vertices,
kOpBatch_AlphaMaskTexture,
kOpBatch_Text,
kOpBatch_ColorText,
kOpBatch_Count, // Add other batch ids before this
};
bool isEmpty() { return mBatches.isEmpty(); }
/**
* Plays back all of the draw ops recorded into batches to the renderer.
* Adjusts the state of the renderer as necessary, and restores it when complete
*/
status_t flush(OpenGLRenderer& renderer, Rect& dirty, int32_t flags,
uint32_t level);
/**
* Add a draw op into the DeferredDisplayList, reordering as needed (for performance) if
* disallowReorder is false, respecting draw order when overlaps occur
*/
void add(DrawOp* op, bool disallowReorder);
private:
void clear();
Vector<DrawOpBatch*> mBatches;
int mBatchIndices[kOpBatch_Count];
};
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_HWUI_DEFERRED_DISPLAY_LIST_H