fbaea53366
I also had to offset the matrix passed to filter evaluation by drawSprite() and internalDrawBitmap() by the primitive position. This is the same offset that is applied when drawing the primitive, to compensate for the internal saveLayer(). Also apply the total matrix to the filter params in asNewEffect(), so that (for example) lighting params are offset by both the compositor clipping and upstream crop rects. R=reed@google.com Review URL: https://codereview.chromium.org/23295017 git-svn-id: http://skia.googlecode.com/svn/trunk@10961 2bbb7eff-a529-9590-31e7-b0007b416f81
129 lines
4.7 KiB
C++
129 lines
4.7 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkLightingImageFilter.h"
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#define WIDTH 330
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#define HEIGHT 440
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namespace skiagm {
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class ImageLightingGM : public GM {
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public:
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ImageLightingGM() : fInitialized(false) {
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this->setBGColor(0xFF000000);
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}
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protected:
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virtual SkString onShortName() {
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return SkString("lighting");
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}
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void make_bitmap() {
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fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
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fBitmap.allocPixels();
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SkDevice device(fBitmap);
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SkCanvas canvas(&device);
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canvas.clear(0x00000000);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(0xFFFFFFFF);
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paint.setTextSize(SkIntToScalar(96));
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const char* str = "e";
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canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
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}
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virtual SkISize onISize() {
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return make_isize(WIDTH, HEIGHT);
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}
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void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) {
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->clipRect(SkRect::MakeWH(
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SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
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canvas->drawBitmap(fBitmap, 0, 0, &paint);
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canvas->restore();
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}
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virtual void onDraw(SkCanvas* canvas) {
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if (!fInitialized) {
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make_bitmap();
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fInitialized = true;
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}
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canvas->clear(0xFF101010);
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SkPaint checkPaint;
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checkPaint.setColor(0xFF202020);
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for (int y = 0; y < HEIGHT; y += 16) {
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for (int x = 0; x < WIDTH; x += 16) {
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->drawRect(SkRect::MakeXYWH(8, 0, 8, 8), checkPaint);
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canvas->drawRect(SkRect::MakeXYWH(0, 8, 8, 8), checkPaint);
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canvas->restore();
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}
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}
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SkPoint3 pointLocation(0, 0, SkIntToScalar(10));
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SkScalar azimuthRad = SkDegreesToRadians(SkIntToScalar(225));
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SkScalar elevationRad = SkDegreesToRadians(SkIntToScalar(5));
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SkPoint3 distantDirection(SkScalarMul(SkScalarCos(azimuthRad), SkScalarCos(elevationRad)),
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SkScalarMul(SkScalarSin(azimuthRad), SkScalarCos(elevationRad)),
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SkScalarSin(elevationRad));
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SkPoint3 spotLocation(SkIntToScalar(-10), SkIntToScalar(-10), SkIntToScalar(20));
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SkPoint3 spotTarget(SkIntToScalar(40), SkIntToScalar(40), 0);
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SkScalar spotExponent = SK_Scalar1;
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SkScalar cutoffAngle = SkIntToScalar(15);
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SkScalar kd = SkIntToScalar(2);
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SkScalar ks = SkIntToScalar(1);
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SkScalar shininess = SkIntToScalar(8);
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SkScalar surfaceScale = SkIntToScalar(1);
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SkColor white(0xFFFFFFFF);
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SkPaint paint;
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SkIRect cropRect = SkIRect::MakeXYWH(20, 10, 60, 65);
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int y = 0;
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for (int i = 0; i < 2; i++) {
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const SkIRect* cr = (i == 0) ? NULL : &cropRect;
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paint.setImageFilter(SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, white, surfaceScale, kd, NULL, cr))->unref();
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drawClippedBitmap(canvas, paint, 0, y);
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paint.setImageFilter(SkLightingImageFilter::CreateDistantLitDiffuse(distantDirection, white, surfaceScale, kd, NULL, cr))->unref();
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drawClippedBitmap(canvas, paint, 110, y);
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paint.setImageFilter(SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, kd, NULL, cr))->unref();
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drawClippedBitmap(canvas, paint, 220, y);
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y += 110;
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paint.setImageFilter(SkLightingImageFilter::CreatePointLitSpecular(pointLocation, white, surfaceScale, ks, shininess, NULL, cr))->unref();
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drawClippedBitmap(canvas, paint, 0, y);
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paint.setImageFilter(SkLightingImageFilter::CreateDistantLitSpecular(distantDirection, white, surfaceScale, ks, shininess, NULL, cr))->unref();
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drawClippedBitmap(canvas, paint, 110, y);
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paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, ks, shininess, NULL, cr))->unref();
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drawClippedBitmap(canvas, paint, 220, y);
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y += 110;
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}
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}
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private:
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typedef GM INHERITED;
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SkBitmap fBitmap;
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bool fInitialized;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new ImageLightingGM; }
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static GMRegistry reg(MyFactory);
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}
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