blob: 367cb6f4c89feab4ec49935b12a3fec286bb5254 [file] [log] [blame]
/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/gpu/RectanizerPow2.h"
namespace skgpu {
bool RectanizerPow2::addRect(int width, int height, SkIPoint16* loc) {
if ((unsigned)width > (unsigned)this->width() ||
(unsigned)height > (unsigned)this->height()) {
return false;
}
int32_t area = width * height; // computed here since height will be modified
height = GrNextPow2(height);
if (height < kMIN_HEIGHT_POW2) {
height = kMIN_HEIGHT_POW2;
}
Row* row = &fRows[HeightToRowIndex(height)];
SkASSERT(row->fRowHeight == 0 || row->fRowHeight == height);
if (0 == row->fRowHeight) {
if (!this->canAddStrip(height)) {
return false;
}
this->initRow(row, height);
} else {
if (!row->canAddWidth(width, this->width())) {
if (!this->canAddStrip(height)) {
return false;
}
// that row is now "full", so retarget our Row record for
// another one
this->initRow(row, height);
}
}
SkASSERT(row->fRowHeight == height);
SkASSERT(row->canAddWidth(width, this->width()));
*loc = row->fLoc;
row->fLoc.fX += width;
SkASSERT(row->fLoc.fX <= this->width());
SkASSERT(row->fLoc.fY <= this->height());
SkASSERT(fNextStripY <= this->height());
fAreaSoFar += area;
return true;
}
///////////////////////////////////////////////////////////////////////////////
// factory is now in RectanizerSkyline.cpp
//Rectanizer* Rectanizer::Factory(int width, int height) {
// return new RectanizerPow2(width, height);
//}
} // End of namespace skgpu