AuroraMiddleware/skia2
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simulate drawatlas

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BUG=skia:

Review URL: https://codereview.chromium.org/1279733002
This commit is contained in:
reed 2015-08-06 05:14:11 -07:00 committed by Commit bot
parent 1a3976795b
commit fd3d87cf67
1 changed files with 36 additions and 9 deletions
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45
samplecode/SampleAtlas.cpp
View File

@ -15,6 +15,29 @@
#include "SkRSXform.h"
#include "SkSurface.h"
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);
canvas->restore();
}
}
static SkImage* make_atlas(int atlasSize, int cellSize) {
SkImageInfo info = SkImageInfo::MakeN32Premul(atlasSize, atlasSize);
SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
@ -101,6 +124,8 @@ class DrawAtlasDrawable : public SkDrawable {
}
};
DrawAtlasProc fProc;
enum {
N = 256,
};
@ -112,7 +137,9 @@ class DrawAtlasDrawable : public SkDrawable {
bool fUseColors;
public:
DrawAtlasDrawable(const SkRect& r) : fBounds(r), fUseColors(false) {
DrawAtlasDrawable(DrawAtlasProc proc, const SkRect& r)
: fProc(proc), fBounds(r), fUseColors(false)
{
SkRandom rand;
fAtlas.reset(make_atlas(kAtlasSize, kCellSize));
const SkScalar kMaxSpeed = 5;
@ -159,8 +186,7 @@ protected:
const SkRect cull = this->getBounds();
const SkColor* colorsPtr = fUseColors ? colors : NULL;
canvas->drawAtlas(fAtlas, xform, fTex, colorsPtr, N, SkXfermode::kModulate_Mode,
&cull, &paint);
fProc(canvas, fAtlas, xform, fTex, colorsPtr, N, &cull, &paint);
}
SkRect onGetBounds() override {
@ -175,11 +201,12 @@ private:
};
class DrawAtlasView : public SampleView {
DrawAtlasDrawable* fDrawable;
const char* fName;
DrawAtlasDrawable* fDrawable;
public:
DrawAtlasView() {
fDrawable = new DrawAtlasDrawable(SkRect::MakeWH(640, 480));
DrawAtlasView(const char name[], DrawAtlasProc proc) : fName(name) {
fDrawable = new DrawAtlasDrawable(proc, SkRect::MakeWH(640, 480));
}
~DrawAtlasView() override {
@ -189,7 +216,7 @@ public:
protected:
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "DrawAtlas");
SampleCode::TitleR(evt, fName);
return true;
}
SkUnichar uni;
@ -222,5 +249,5 @@ private:
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new DrawAtlasView; }
static SkViewRegister reg(MyFactory);
DEF_SAMPLE( return new DrawAtlasView("DrawAtlas", draw_atlas); )
DEF_SAMPLE( return new DrawAtlasView("DrawAtlasSim", draw_atlas_sim); )