Skottie Rendering to frame buffer - Strange behaviour

[Ranjith pillai]

Hi Skia Community,

I am trying to render skottie animation to an offscreen surface. I modified the skottielib

platform_tools\android\apps\skottie\skottielib\src\main\cpp

to pass a FBO to the DrawFrame jni function

extern "C" JNIEXPORT bool
JNICALL
Java_org_skia_skottie_SkottieAnimation_nDrawFrame(JNIEnv *env, jclass clazz,
jlong nativeProxy, jint width,
jint height,
jboolean wideColorGamut,
jfloat progress,
jint backgroundColor,
jboolean forceDraw,
jint fboID) {

GrGLFramebufferInfo fboInfo;
fboInfo.fFBOID = fboID;

auto backendRT = GrBackendRenderTargets::MakeGL(width, height, 0, STENCIL_BUFFER_SIZE, fboInfo);

sk_sp<SkSurface> renderTarget(SkSurfaces::WrapBackendRenderTarget(
dContext, backendRT, kBottomLeft_GrSurfaceOrigin, colorType, nullptr, &props));

auto canvas = renderTarget->getCanvas();
canvas->clear(backgroundColor);

If I clear the canvas with background color it works well. I was able to confirm the background color inside the texture which is associated with FBO.

But if I call 

skottieAnimation->mAnimation->render(canvas, &bounds);

Skottie Animation does not gets rendered to FBO, also messes up my subsequent opengl rendering pipeline outside skia. Please suggest the reason for this strange behaviour. The return value of mAnimation->render is TRUE

Regards,

Ranjith

[Duong Nguyen]

Hi, it's been a while but currently I'm facing the same problem as yours. Did you find a solution for this? Can you share it with me?