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/*
* 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.
*/
#define LOG_TAG "OpenGLRenderer"
#define ATRACE_TAG ATRACE_TAG_VIEW
#include <utils/Trace.h>
#include "Debug.h"
#include "DisplayListOp.h"
#include "OpenGLRenderer.h"
#if DEBUG_DEFER
#define DEFER_LOGD(...) ALOGD(__VA_ARGS__)
#else
#define DEFER_LOGD(...)
#endif
namespace android {
namespace uirenderer {
class DrawOpBatch {
public:
DrawOpBatch() {
mOps.clear();
}
~DrawOpBatch() {
mOps.clear();
}
void add(DrawOp* op) {
// NOTE: ignore empty bounds special case, since we don't merge across those ops
mBounds.unionWith(op->state.mBounds);
mOps.add(op);
}
bool intersects(Rect& rect) {
if (!rect.intersects(mBounds)) return false;
for (unsigned int i = 0; i < mOps.size(); i++) {
if (rect.intersects(mOps[i]->state.mBounds)) {
#if DEBUG_DEFER
DEFER_LOGD("op intersects with op %p with bounds %f %f %f %f:", mOps[i],
mOps[i]->state.mBounds.left, mOps[i]->state.mBounds.top,
mOps[i]->state.mBounds.right, mOps[i]->state.mBounds.bottom);
mOps[i]->output(2);
#endif
return true;
}
}
return false;
}
Vector<DrawOp*> mOps;
private:
Rect mBounds;
};
void DeferredDisplayList::clear() {
for (int i = 0; i < kOpBatch_Count; i++) {
mBatchIndices[i] = -1;
}
for (unsigned int i = 0; i < mBatches.size(); i++) {
delete mBatches[i];
}
mBatches.clear();
}
void DeferredDisplayList::add(DrawOp* op, bool disallowReorder) {
if (CC_UNLIKELY(disallowReorder)) {
if (!mBatches.isEmpty()) {
mBatches[0]->add(op);
return;
}
DrawOpBatch* b = new DrawOpBatch();
b->add(op);
mBatches.add(b);
return;
}
// disallowReorder isn't set, so find the latest batch of the new op's type, and try to merge
// the new op into it
DrawOpBatch* targetBatch = NULL;
int batchId = op->getBatchId();
if (!mBatches.isEmpty()) {
if (op->state.mBounds.isEmpty()) {
// don't know the bounds for op, so add to last batch and start from scratch on next op
mBatches.top()->add(op);
for (int i = 0; i < kOpBatch_Count; i++) {
mBatchIndices[i] = -1;
}
#if DEBUG_DEFER
DEFER_LOGD("Warning: Encountered op with empty bounds, resetting batches");
op->output(2);
#endif
return;
}
if (batchId >= 0 && mBatchIndices[batchId] != -1) {
int targetIndex = mBatchIndices[batchId];
targetBatch = mBatches[targetIndex];
// iterate back toward target to see if anything drawn since should overlap the new op
for (int i = mBatches.size() - 1; i > targetIndex; i--) {
DrawOpBatch* overBatch = mBatches[i];
if (overBatch->intersects(op->state.mBounds)) {
targetBatch = NULL;
#if DEBUG_DEFER
DEFER_LOGD("op couldn't join batch %d, was intersected by batch %d",
targetIndex, i);
op->output(2);
#endif
break;
}
}
}
}
if (!targetBatch) {
targetBatch = new DrawOpBatch();
mBatches.add(targetBatch);
if (batchId >= 0) {
mBatchIndices[batchId] = mBatches.size() - 1;
}
}
targetBatch->add(op);
}
status_t DeferredDisplayList::flush(OpenGLRenderer& renderer, Rect& dirty, int32_t flags,
uint32_t level) {
ATRACE_CALL();
status_t status = DrawGlInfo::kStatusDone;
if (isEmpty()) return status; // nothing to flush
DEFER_LOGD("--flushing");
renderer.eventMark("Flush");
DrawModifiers restoreDrawModifiers = renderer.getDrawModifiers();
int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
int opCount = 0;
for (unsigned int i = 0; i < mBatches.size(); i++) {
DrawOpBatch* batch = mBatches[i];
for (unsigned int j = 0; j < batch->mOps.size(); j++) {
DrawOp* op = batch->mOps[j];
renderer.restoreDisplayState(op->state);
#if DEBUG_DEFER
op->output(2);
#endif
status |= op->applyDraw(renderer, dirty, level,
op->state.mMultipliedAlpha >= 0, op->state.mMultipliedAlpha);
opCount++;
}
}
DEFER_LOGD("--flushed, drew %d batches (total %d ops)", mBatches.size(), opCount);
renderer.restoreToCount(restoreTo);
renderer.setDrawModifiers(restoreDrawModifiers);
clear();
return status;
}
}; // namespace uirenderer
}; // namespace android
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