void OnResizedSwapChain(int width, int height, float fovy)
{
// Recalculate buffer sizes
m_BBWidth = width / 2;
m_BBHeight = height / 2;
RecompileShader();
UpdateDirs();
// Create the RT
Texture2DDescription pDesc = new Texture2DDescription();
pDesc.Width = m_BBWidth;
pDesc.Height = m_BBHeight;
pDesc.MipLevels = 1;
pDesc.ArraySize = 1;
pDesc.Format = Format.R8G8B8A8_UNorm;
//pDesc.Format = Format.R8_UNorm;
pDesc.SampleDescription = new SampleDescription(1, 0);
pDesc.Usage = ResourceUsage.Default;
pDesc.BindFlags = BindFlags.ShaderResource | BindFlags.RenderTarget;
pDesc.CpuAccessFlags = CpuAccessFlags.None;
pDesc.OptionFlags = ResourceOptionFlags.None;
//SAFE_DELETE(m_SSAOBuffer);
MSsaoBuffer = new SimpleRT(m_D3DDevice, pDesc);
// tanf ?? using normal tan (probl tangent float
m_FocalLen[0] = 1.0f / (float)Math.Tan(fovy * 0.5f) * (float)m_BBHeight / (float)m_BBWidth;
m_FocalLen[1] = 1.0f / (float)Math.Tan(fovy * 0.5f);
m_InvFocalLen[0] = 1.0f / m_FocalLen[0];
m_InvFocalLen[1] = 1.0f / m_FocalLen[1];
m_InvResolution[0] = 1.0f / m_BBWidth;
m_InvResolution[1] = 1.0f / m_BBHeight;
m_Resolution[0] = (float)m_BBWidth;
m_Resolution[1] = (float)m_BBHeight;
m_pFocalLen.Set(m_FocalLen);
m_pInvFocalLen.Set(m_InvFocalLen);
m_pInvResolution.Set(m_InvResolution);
m_pResolution.Set(m_Resolution);
m_Viewport.X = 0;
m_Viewport.Y = 0;
m_Viewport.MinZ = 0;
m_Viewport.MaxZ = 1;
m_Viewport.Width = m_BBWidth;
m_Viewport.Height = m_BBHeight;
}
void initialize()
{
m_BBWidth = 0;
m_BBHeight = 0;
m_Effect = null;
MSsaoBuffer = null;
m_pRndTexture = null;
m_pRndTexSRV = null;
m_RadiusMultiplier = 1.0f;
m_AngleBias = 30;
m_NumDirs = 16;
m_NumSteps = 3;
m_Contrast = 1.25f;
m_Attenuation = 1.0f;
m_QualityMode = 1;
m_AORadius = 0.001f;
}
