@Override
public void onDrawFrame(GL10 glUnused) {
// PREPARE
mTexturedRectangle.reset();
// FETCH AND TRANSFER FRAME TO TEXTURE
if (mRenderRequest == RenderRequest.ALL || mExternalSurfaceTexture.isTextureUpdateAvailable()) {
mExternalSurfaceTexture.updateTexture();
mFramebufferIn.bind();
mReadExternalTextureShaderProgram.use();
mReadExternalTextureShaderProgram.setTexture(mExternalSurfaceTexture);
mTexturedRectangle.draw(mReadExternalTextureShaderProgram);
mRenderRequest = RenderRequest.EFFECT;
}
// MANIPULATE TEXTURE WITH SHADER(S)
if (mRenderRequest == RenderRequest.EFFECT) {
if (mEffect != null) {
mEffect.apply(mFramebufferIn.getTexture(), mFramebufferOut);
} else {
mFramebufferOut.bind();
mDefaultShaderProgram.use();
mDefaultShaderProgram.setTexture(mFramebufferIn.getTexture());
mTexturedRectangle.draw(mDefaultShaderProgram);
}
mRenderRequest = RenderRequest.GEOMETRY;
}
// RENDER TEXTURE TO SCREEN
if (mRenderRequest == RenderRequest.GEOMETRY) {
GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0); // framebuffer 0 is the screen
GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
mTextureToScreenShaderProgram.use();
mTextureToScreenShaderProgram.setTexture(mFramebufferOut.getTexture());
mTexturedRectangle.translate(0.0f, 0.0f, -1.0f);
mTexturedRectangle.calculateMVP(mViewMatrix, mProjectionMatrix);
mTexturedRectangle.draw(mTextureToScreenShaderProgram);
}
// STUFF
// mFrameRateCalculator.frame();
mRenderRequest = RenderRequest.DEFAULT;
}
@Override
public void onSurfaceChanged(GL10 glUnused, int width, int height) {
Log.d(TAG, "onSurfaceChanged " + width + "x" + height);
mFramebufferIn = new Framebuffer(width, height);
mFramebufferOut = new Framebuffer(width, height);
mFramebufferOut.getTexture().setFilterMode(-1, GLES20.GL_LINEAR);
for (Effect effect : mEffects) {
/* After a surface change, if the resolution has changed, effects need to be
* reinitialized to update them to the new resolution. */
if (effect.isInitialized()) {
Log.d(TAG, "reinitializing effect " + effect.getName());
effect.init(width, height);
}
}
// adjust the viewport to the surface size
GLES20.glViewport(0, 0, width, height);
mWidth = width;
mHeight = height;
setZoomLevel(1.0f);
// fully re-render current scene to adjust to the change
mRenderRequest = RenderRequest.ALL;
onDrawFrame(glUnused);
}
