add gm for shader tilemodes
git-svn-id: http://skia.googlecode.com/svn/trunk@231 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/tilemodes.cpp b/gm/tilemodes.cpp
new file mode 100644
index 0000000..d836ea5
--- /dev/null
+++ b/gm/tilemodes.cpp
@@ -0,0 +1,155 @@
+#include "gm.h"
+#include "SkPath.h"
+#include "SkRegion.h"
+#include "SkShader.h"
+#include "SkUtils.h"
+#include "SkColorPriv.h"
+#include "SkColorFilter.h"
+#include "SkTypeface.h"
+
+// effects
+#include "SkGradientShader.h"
+#include "SkUnitMappers.h"
+#include "SkBlurDrawLooper.h"
+
+namespace skiagm {
+
+static void makebm(SkBitmap* bm, SkBitmap::Config config, int w, int h) {
+ bm->setConfig(config, w, h);
+ bm->allocPixels();
+ bm->eraseColor(0);
+
+ SkCanvas canvas(*bm);
+ SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} };
+ SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
+ SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
+ SkPaint paint;
+
+ SkUnitMapper* um = NULL;
+
+ um = new SkCosineMapper;
+// um = new SkDiscreteMapper(12);
+
+ SkAutoUnref au(um);
+
+ paint.setDither(true);
+ paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos,
+ SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref();
+ canvas.drawPaint(paint);
+}
+
+static void setup(SkPaint* paint, const SkBitmap& bm, bool filter,
+ SkShader::TileMode tmx, SkShader::TileMode tmy) {
+ SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy);
+ paint->setShader(shader)->unref();
+ paint->setFilterBitmap(filter);
+}
+
+static const SkBitmap::Config gConfigs[] = {
+ SkBitmap::kARGB_8888_Config,
+ SkBitmap::kRGB_565_Config,
+ SkBitmap::kARGB_4444_Config
+};
+static const int gWidth = 32;
+static const int gHeight = 32;
+
+class TilingGM : public GM {
+ SkBlurDrawLooper fLooper;
+public:
+ TilingGM()
+ : fLooper(SkIntToScalar(1), SkIntToScalar(2), SkIntToScalar(2),
+ 0x88000000) {
+ for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) {
+ makebm(&fTexture[i], gConfigs[i], gWidth, gHeight);
+ }
+ }
+
+ SkBitmap fTexture[SK_ARRAY_COUNT(gConfigs)];
+
+protected:
+ SkString onShortName() {
+ return SkString("tilemodes");
+ }
+
+ SkISize onISize() { return make_isize(880, 560); }
+
+ void drawBG(SkCanvas* canvas) {
+ canvas->drawColor(SK_ColorWHITE);
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ this->drawBG(canvas);
+
+ SkRect r = { 0, 0, SkIntToScalar(gWidth*2), SkIntToScalar(gHeight*2) };
+
+ static const char* gConfigNames[] = { "8888", "565", "4444" };
+
+ static const bool gFilters[] = { false, true };
+ static const char* gFilterNames[] = { "point", "bilinear" };
+
+ static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode };
+ static const char* gModeNames[] = { "C", "R", "M" };
+
+ SkScalar y = SkIntToScalar(24);
+ SkScalar x = SkIntToScalar(10);
+
+ for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
+ for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
+ SkPaint p;
+ SkString str;
+ p.setAntiAlias(true);
+ p.setDither(true);
+ p.setLooper(&fLooper);
+ str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
+
+ p.setTextAlign(SkPaint::kCenter_Align);
+ canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p);
+
+ x += r.width() * 4 / 3;
+ }
+ }
+
+ y += SkIntToScalar(16);
+
+ for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) {
+ for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) {
+ x = SkIntToScalar(10);
+ for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
+ for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
+ SkPaint paint;
+ setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]);
+ paint.setDither(true);
+
+ canvas->save();
+ canvas->translate(x, y);
+ canvas->drawRect(r, paint);
+ canvas->restore();
+
+ x += r.width() * 4 / 3;
+ }
+ }
+ {
+ SkPaint p;
+ SkString str;
+ p.setAntiAlias(true);
+ p.setLooper(&fLooper);
+ str.printf("%s, %s", gConfigNames[i], gFilterNames[j]);
+ canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p);
+ }
+
+ y += r.height() * 4 / 3;
+ }
+ }
+ }
+
+private:
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new TilingGM; }
+static GMRegistry reg(MyFactory);
+
+}
+