private void OnRenderImage(RenderTexture source, RenderTexture destination)
{
if (m_Camera == null)
{
return;
}
// Calculate Frustum origins and rays for mask camera.
Matrix4x4 frustumOrigins;
Matrix4x4 frustumRays;
LOSHelper.CalculateViewVectors(m_Camera, out frustumRays, out frustumOrigins);
// Push parameters which are identical for all LOS sources.
Materials.Mask.SetMatrix(ShaderID.FrustumRays, frustumRays);
Materials.Mask.SetMatrix(ShaderID.FrustumOrigins, frustumOrigins);
Materials.Mask.SetMatrix(ShaderID.WorldToCameraMatrix, m_Camera.worldToCameraMatrix);
// Store original skybox.
Material originalSkybox = RenderSettings.skybox;
// Set-up skybox material which clears render texture to farplane depth.
RenderSettings.skybox = Materials.SkyBox;
// Create Mask Render Texture.
RenderTexture maskRenderTexture = CreateMaskRenderTexture();
// Get list with all LOS sources.
List <LOSSource> losSources = LOSManager.Instance.LOSSources;
// Iterate over all LOS sources.
for (int i = 0; i < losSources.Count; i++)
{
RenderSourceToMask(losSources[i], ref maskRenderTexture);
}
// Revert original skybox.
RenderSettings.skybox = originalSkybox;
// Get unmodified screen buffer.
Materials.Combine.SetTexture(ShaderID.PreEffectTex, m_BufferStorage.BufferTexture);
// Set-up material.
Materials.Combine.SetTexture(ShaderID.MaskTex, maskRenderTexture);
// Check if Stencil Mask component is used.
bool isStencilMaskEnabled = (m_StencilMask != null) && (m_StencilMask.enabled == true);
if (isStencilMaskEnabled)
{
// Set Stencil Mask texture.
Materials.Combine.SetTexture(ShaderID.StencilMaskTex, m_StencilMask.MaskTexture);
}
// Render final effect.
Graphics.Blit(source, destination, Materials.Combine, isStencilMaskEnabled ? 1 : 0);
RenderTexture.ReleaseTemporary(maskRenderTexture);
}
private void RenderWorldPosition(RenderTexture source, RenderTexture destination)
{
// Calculate Frustum origins and rays for mask camera.
Matrix4x4 frustumOrigins;
Matrix4x4 frustumRays;
LOSHelper.CalculateViewVectors(m_Camera, out frustumRays, out frustumOrigins);
// Push parameters which are identical for all LOS sources.
Materials.Debug.SetMatrix(ShaderID.FrustumRays, frustumRays);
Materials.Debug.SetMatrix(ShaderID.FrustumOrigins, frustumOrigins);
Materials.Debug.SetPass(2);
LOSMask.IndexedGraphicsBlit(destination);
}