Compile all fiddle examples locally
Motivation: it would be a good idea if the API documentation examples
were checked into the skia repository, so we could make sure they
compile as part of the commit queue.
Fiddle would make/update a named fiddle each time it gets a new
commit of Skia, extracted from the code in the examples/ directory.
The docs would point at those named fiddles. Named fiddles have urls
in the form:
https://fiddle.skia.org/c/@Bitmap_000
Then we would stick a link to the example into the header documentation
like this:
/** Allocates the pixel memory for the bitmap, given its dimensions
and SkColorType. Returns true on success, where success means
either setPixels() or setPixelRef() was called.
@param bitmap SkBitmap containing SkImageInfo as input, and
SkPixelRef as output
@return true if SkPixelRef was allocated
@example https://fiddle.skia.org/c/@Bitmap_000
*/
bool allocPixelRef(SkBitmap* bitmap) override;
There are still around 200 disabled examples that need to be fixed
(these result from API changes since the author left).
Change-Id: I14a31348a9ccaaa31f65424b91e3a3533d2583a7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/198824
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
diff --git a/docs/examples/Image_040.cpp b/docs/examples/Image_040.cpp
new file mode 100644
index 0000000..7f8488e
--- /dev/null
+++ b/docs/examples/Image_040.cpp
@@ -0,0 +1,34 @@
+// Copyright 2019 Google LLC.
+// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
+#include "fiddle/examples.h"
+// HASH=06aeb3cf63ffccf7b49fe556e5def351
+REG_FIDDLE(Image_040, 256, 64, false, 0) {
+static sk_sp<SkImage> create_gpu_image(GrContext* grContext) {
+ const SkImageInfo info = SkImageInfo::MakeN32(20, 20, kOpaque_SkAlphaType);
+ auto surface(SkSurface::MakeRenderTarget(grContext, SkBudgeted::kNo, info));
+ SkCanvas* canvas = surface->getCanvas();
+ canvas->clear(SK_ColorWHITE);
+ SkPaint paint;
+ paint.setColor(SK_ColorBLACK);
+ canvas->drawRect(SkRect::MakeXYWH(5, 5, 10, 10), paint);
+ return surface->makeImageSnapshot();
+}
+
+void draw(SkCanvas* canvas) {
+ GrContext* grContext = canvas->getGrContext();
+ if (!grContext) {
+ return;
+ }
+ sk_sp<SkImage> backEndImage = create_gpu_image(grContext);
+ canvas->drawImage(backEndImage, 0, 0);
+ GrBackendTexture texture;
+ SkImage::BackendTextureReleaseProc proc;
+ if (!SkImage::MakeBackendTextureFromSkImage(grContext, std::move(backEndImage),
+ &texture, &proc)) {
+ return;
+ }
+ sk_sp<SkImage> i2 = SkImage::MakeFromTexture(grContext, texture, kTopLeft_GrSurfaceOrigin,
+ kN32_SkColorType, kOpaque_SkAlphaType, nullptr);
+ canvas->drawImage(i2, 30, 30);
+}
+} // END FIDDLE