cc6e5efe03
With this change I should be able to start merging the rendering implementations of bench_pictures and render_pictures. Review URL: https://codereview.appspot.com/6427061 git-svn-id: http://skia.googlecode.com/svn/trunk@4816 2bbb7eff-a529-9590-31e7-b0007b416f81
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
#include "PictureRenderer.h"
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#include "SamplePipeControllers.h"
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#include "SkCanvas.h"
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#include "SkDevice.h"
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#include "SkGPipe.h"
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#include "SkPicture.h"
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#include "SkTDArray.h"
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#include "SkTypes.h"
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#include "picture_utils.h"
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namespace sk_tools {
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enum {
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kDefaultTileWidth = 256,
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kDefaultTileHeight = 256
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};
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void PipePictureRenderer::render(SkPicture* pict, SkCanvas* canvas) {
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PipeController pipeController(canvas);
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SkGPipeWriter writer;
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SkCanvas* pipeCanvas = writer.startRecording(&pipeController);
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pipeCanvas->drawPicture(*pict);
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writer.endRecording();
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}
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void SimplePictureRenderer::render(SkPicture* pict, SkCanvas* canvas) {
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canvas->drawPicture(*pict);
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}
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TiledPictureRenderer::TiledPictureRenderer()
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: fTileWidth(kDefaultTileWidth)
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, fTileHeight(kDefaultTileHeight) {}
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void TiledPictureRenderer::init(const SkPicture& pict) {
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deleteTiles();
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if (fTileWidthPercentage > 0) {
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fTileWidth = sk_float_ceil2int(fTileWidthPercentage * pict.width() / 100);
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}
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if (fTileHeightPercentage > 0) {
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fTileHeight = sk_float_ceil2int(fTileHeightPercentage * pict.height() / 100);
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}
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setupTiles(pict);
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}
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void TiledPictureRenderer::render(SkPicture* pict, SkCanvas* canvas) {
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for (int i = 0; i < fTiles.count(); ++i) {
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fTiles[i].fCanvas->drawPicture(*pict);
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}
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copyTilesToCanvas(*pict, canvas);
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}
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TiledPictureRenderer::~TiledPictureRenderer() {
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deleteTiles();
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}
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void TiledPictureRenderer::clipTile(const SkPicture& picture, const TileInfo& tile) {
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SkRect clip = SkRect::MakeWH(SkIntToScalar(picture.width()),
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SkIntToScalar(picture.height()));
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tile.fCanvas->clipRect(clip);
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}
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void TiledPictureRenderer::addTile(const SkPicture& picture, int tile_x_start, int tile_y_start) {
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TileInfo* tile = fTiles.push();
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tile->fBitmap = SkNEW(SkBitmap);
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sk_tools::setup_bitmap(tile->fBitmap, fTileWidth, fTileHeight);
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tile->fCanvas = SkNEW_ARGS(SkCanvas, (*(tile->fBitmap)));
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tile->fCanvas->translate(SkIntToScalar(-tile_x_start), SkIntToScalar(-tile_y_start));
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clipTile(picture, *tile);
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}
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void TiledPictureRenderer::setupTiles(const SkPicture& picture) {
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for (int tile_y_start = 0; tile_y_start < picture.height();
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tile_y_start += fTileHeight) {
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for (int tile_x_start = 0; tile_x_start < picture.width();
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tile_x_start += fTileWidth) {
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addTile(picture, tile_x_start, tile_y_start);
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}
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}
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}
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void TiledPictureRenderer::deleteTiles() {
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for (int i = 0; i < fTiles.count(); ++i) {
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SkDELETE(fTiles[i].fCanvas);
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SkDELETE(fTiles[i].fBitmap);
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}
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fTiles.reset();
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}
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void TiledPictureRenderer::copyTilesToCanvas(const SkPicture& pict, SkCanvas* destination) {
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int tile_index = 0;
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for (int tile_y_start = 0; tile_y_start < pict.height();
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tile_y_start += fTileHeight) {
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for (int tile_x_start = 0; tile_x_start < pict.width();
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tile_x_start += fTileWidth) {
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SkASSERT(tile_index < fTiles.count());
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SkBitmap source = fTiles[tile_index].fCanvas->getDevice()->accessBitmap(false);
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destination->drawBitmap(source,
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SkIntToScalar(tile_x_start),
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SkIntToScalar(tile_y_start));
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++tile_index;
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}
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}
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}
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}
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