Image_isValid.cpp File Reference

#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions
	REG_FIDDLE (Image_isValid, 256, 256, false, 5)

Function Documentation

REG_FIDDLE()

REG_FIDDLE	(	Image_isValid	,
		256	,
		256	,
		false	,
		5
	)

Definition at line 4 of file Image_isValid.cpp.

                                              {
void draw(SkCanvas* canvas) {
    auto dContext = GrAsDirectContext(canvas->recordingContext());
    if (!dContext) {
        return;
    }
 
    auto drawImage = [=](sk_sp<SkImage> image, const char* label) -> void {
        if (nullptr == image) {
            return;
        }
        SkFont font = SkFont(fontMgr->matchFamilyStyle(nullptr, {}));
        SkPaint paint;
        paint.setAntiAlias(true);
        canvas->drawImage(image, 0, 0);
        canvas->drawString(label, image->width() / 2, image->height() / 4, font, paint);
        if (dContext) {
            const char* msg = image->isValid(dContext) ? "is valid on GPU"
                                                       : "not valid on GPU";
            canvas->drawString(msg, 20, image->height() * 5 / 8, font, paint);
        }
 
        const char* msg = image->isValid(nullptr) ? "is valid on CPU" : "not valid on CPU";
 
        canvas->drawString(msg, 20, image->height() * 7 / 8, font, paint);
    };
    sk_sp<SkImage> bitmapImage(source.asImage());
    sk_sp<SkImage> textureImage(SkImages::BorrowTextureFrom(dContext,
                                                            backEndTexture,
                                                            kTopLeft_GrSurfaceOrigin,
                                                            kRGBA_8888_SkColorType,
                                                            kOpaque_SkAlphaType,
                                                            nullptr));
    drawImage(image, "image");
    canvas->translate(image->width(), 0);
    drawImage(bitmapImage, "source");
    canvas->translate(-image->width(), image->height());
    drawImage(textureImage, "backEndTexture");
}
}  // END FIDDLE