static const int kWidth = 960;
static const int kHeight = 640;
-class DrawShipView : public SampleView {
- const char* fName;
+typedef void (*DrawAtlasProc)(SkCanvas*, SkImage*, const SkRSXform[], const SkRect[],
+const SkColor[], int, const SkRect*, const SkPaint*);
+
+static void draw_atlas(SkCanvas* canvas, SkImage* atlas, const SkRSXform xform[],
+ const SkRect tex[], const SkColor colors[], int count, const SkRect* cull,
+ const SkPaint* paint) {
+ canvas->drawAtlas(atlas, xform, tex, colors, count, SkXfermode::kModulate_Mode, cull, paint);
+}
+
+static void draw_atlas_sim(SkCanvas* canvas, SkImage* atlas, const SkRSXform xform[],
+ const SkRect tex[], const SkColor colors[], int count, const SkRect* cull,
+ const SkPaint* paint) {
+ for (int i = 0; i < count; ++i) {
+ SkMatrix matrix;
+ matrix.setRSXform(xform[i]);
+
+ canvas->save();
+ canvas->concat(matrix);
+ canvas->drawImageRect(atlas, tex[i], tex[i].makeOffset(-tex[i].x(), -tex[i].y()), paint,
+ SkCanvas::kFast_SrcRectConstraint);
+ canvas->restore();
+ }
+}
+
+class DrawShipView : public SampleView {
public:
- DrawShipView(const char name[]) : fName(name) {
+ DrawShipView(const char name[], DrawAtlasProc proc) : fName(name), fProc(proc) {
fAtlas.reset(GetResourceAsImage("ship.png"));
if (!fAtlas) {
SkDebugf("\nCould not decode file ship.png. Falling back to penguin mode.\n");
fXform[i].fTy += dy;
}
- canvas->drawAtlas(fAtlas, fXform, fTex, nullptr, kGrid*kGrid+1, SkXfermode::kSrcOver_Mode,
- nullptr, &paint);
+ fProc(canvas, fAtlas, fXform, fTex, nullptr, kGrid*kGrid+1, nullptr, &paint);
canvas->drawText(outString.c_str(), outString.size(), 100.f, 100.f, paint);
this->inval(nullptr);
#endif
private:
+ const char* fName;
+ DrawAtlasProc fProc;
+
SkAutoTUnref<SkImage> fAtlas;
SkRSXform fXform[kGrid*kGrid+1];
SkRect fTex[kGrid*kGrid+1];
//////////////////////////////////////////////////////////////////////////////
-DEF_SAMPLE( return new DrawShipView("DrawShip"); )
+DEF_SAMPLE( return new DrawShipView("DrawShip", draw_atlas); )
+DEF_SAMPLE( return new DrawShipView("DrawShipSim", draw_atlas_sim); )