Pixmap_writable_addrF16.cpp File Reference

#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions
	REG_FIDDLE (Pixmap_writable_addrF16, 256, 64, false, 0)

Function Documentation

REG_FIDDLE()

REG_FIDDLE	(	Pixmap_writable_addrF16	,
		256	,
		64	,
		false	,
		0
	)

Definition at line 5 of file Pixmap_writable_addrF16.cpp.

                                                       {
void draw(SkCanvas* canvas) {
    SkImageInfo info = SkImageInfo::Make(1, 2, kRGBA_F16_SkColorType, kPremul_SkAlphaType);
    uint16_t storage[2][4];
    SkPixmap pixmap(info, storage[0], sizeof(uint64_t));
    SkIRect topPixelBounds = {0, 0, 1, 1};
    pixmap.erase({ 0.65f, 0.45f, 0.25f, 1 }, &topPixelBounds);
    SkIRect bottomPixelBounds = {0, 1, 1, 2};
    pixmap.erase({ 0.25f, 0.65f, 0.45f, 1 }, &bottomPixelBounds);
    SkBitmap bitmap;
    canvas->scale(20, 20);
    bitmap.installPixels(pixmap);
    canvas->drawImage(bitmap.asImage(), 0, 0);
    uint16_t* pixel2 = pixmap.writable_addrF16(0, 1);
    for (int i = 0; i < 4; ++i) {
        pixel2[i] = storage[0][i];
    }
    bitmap.installPixels(pixmap);
    canvas->drawImage(bitmap.asImage(), 4, 0);
}
}  // END FIDDLE