protected:
void update(int dt)
{
mUpdateProgram->enable();
mUpdateProgram->setUniform("u_fTime", (float)mTime);
mUpdateProgram->setUniform("u_fDeltaTime", (float)dt);
mRandomTexture->bind(OGL_TEXTURE_GENERIC);
glEnable(GL_RASTERIZER_DISCARD);
glBindBuffer(GL_ARRAY_BUFFER, mVBOs[mActiveVBO]);
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, mTBOs[mActiveTBO]);
glBindVertexArray(mVAOs[0]);
glBeginTransformFeedback(GL_POINTS); ///////////////////////////////////////////////////////////////////////////
if(mFirst)
{
glDrawArrays(GL_POINTS, 0, 1);
mFirst = false;
}
else
{
glDrawTransformFeedback(GL_POINTS, mTBOs[mActiveVBO]);
}
glEndTransformFeedback(); //////////////////////////////////////////////////////////////////////////////////////
// glExitIfError();
glBindVertexArray(0);
glDisable(GL_RASTERIZER_DISCARD);
void render()
{
mRenderProgram->enable();
mRenderProgram->setUniform("u_vCameraPosition", mCameraPosition);
mRenderProgram->setUniform("u_mVP", mProjectionMatrix * mViewMatrix);
mDiffuseTexture->bind(OGL_TEXTURE_DIFFUSE);
glBindBuffer(GL_ARRAY_BUFFER, mVBOs[mActiveTBO]);
glBindVertexArray(mVAOs[1]);
glDrawTransformFeedback(GL_POINTS, mTBOs[mActiveTBO]);
// glExitIfError();
glBindVertexArray(0);
