bool SplatRenderer::beginVisibilityPass()
{
if (!mIsInitialized)
{
init();
}
if (!isSupported())
{
std::cerr << "SplatRenderer error: not supported hardware\n";
return false;
}
if (mCurrentPass!=2)
{
std::cerr << "SplatRenderer error: programming error when calling beginVisibilityPass\n";
return false;
}
viewer->glPushAttrib(GL_ALL_ATTRIB_BITS);
mCurrentPass = 0;
// grab projection info
viewer->glGetIntegerv(GL_VIEWPORT, mCachedVP);
viewer->glGetFloatv(GL_MODELVIEW_MATRIX, mCachedMV);
viewer->glGetFloatv(GL_PROJECTION_MATRIX, mCachedProj);
updateRenderBuffer();
if (mCachedFlags != mFlags)
configureShaders();
// configureShaders may detect that shaders are actually not supported.
if (!isSupported())
{
std::cerr << "SplatRenderer error: not supported hardware\n";
return false;
}
mCachedFlags = mFlags;
mParams.update(mCachedMV, mCachedProj, mCachedVP);
mParams.loadTo(mShaders[mCurrentPass]);
mRenderBuffer->bind();
if (mFlags & DEFERRED_SHADING_BIT)
{
//GLenum buf[2] = {GL_COLOR_ATTACHMENT0_EXT,GL_COLOR_ATTACHMENT1_EXT};
GLenum buf[2] = {GL_COLOR_ATTACHMENT0,GL_COLOR_ATTACHMENT1};
//glDrawBuffersARB(2, buf);
viewer->glDrawBuffers(2, buf);
}
viewer->glViewport(mCachedVP[0],mCachedVP[1],mCachedVP[2],mCachedVP[3]);
viewer->glClearColor(0,0,0,0);
viewer->glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
enablePass(mCurrentPass);
;
return true;
}
int drawTile(int row, int col, int state) {
updateRenderBuffer(row, col, state);
drawAnimation(row,col,state);
}
