/// <summary>
/// Set camera matrices. This method will set <c>UNITY_MATRIX_V</c>, <c>UNITY_MATRIX_P</c>, <c>UNITY_MATRIX_VP</c> to camera matrices.
/// Additionally this will also set <c>unity_CameraProjection</c> and <c>unity_CameraProjection</c>.
/// If <c>setInverseMatrices</c> is set to true this function will also set <c>UNITY_MATRIX_I_V</c> and <c>UNITY_MATRIX_I_VP</c>.
/// This function has no effect when rendering in stereo. When in stereo rendering you cannot override camera matrices.
/// If you need to set general purpose view and projection matrices call <see cref="SetViewAndProjectionMatrices(CommandBuffer, Matrix4x4, Matrix4x4, bool)"/> instead.
/// </summary>
/// <param name="cmd">CommandBuffer to submit data to GPU.</param>
/// <param name="cameraData">CameraData containing camera matrices information.</param>
/// <param name="setInverseMatrices">Set this to true if you also need to set inverse camera matrices.</param>
public static void SetCameraMatrices(CommandBuffer cmd, ref CameraData cameraData, bool setInverseMatrices)
{
// We cannot override camera matrices in VR. They are set using context.SetupCameraProperties until XR Pure SDK lands.
if (cameraData.isStereoEnabled)
{
return;
}
Matrix4x4 viewMatrix = cameraData.GetViewMatrix();
Matrix4x4 projectionMatrix = cameraData.GetProjectionMatrix();
// TODO: Investigate why SetViewAndProjectionMatrices is causing y-flip / winding order issue
// for now using cmd.SetViewProjecionMatrices
//SetViewAndProjectionMatrices(cmd, viewMatrix, cameraData.GetDeviceProjectionMatrix(), setInverseMatrices);
cmd.SetViewProjectionMatrices(viewMatrix, projectionMatrix);
if (setInverseMatrices)
{
Matrix4x4 inverseViewMatrix = Matrix4x4.Inverse(viewMatrix);
cmd.SetGlobalMatrix(ShaderPropertyId.cameraToWorldMatrix, inverseViewMatrix);
Matrix4x4 viewAndProjectionMatrix = cameraData.GetGPUProjectionMatrix() * viewMatrix;
Matrix4x4 inverseViewProjection = Matrix4x4.Inverse(viewAndProjectionMatrix);
cmd.SetGlobalMatrix(ShaderPropertyId.inverseViewAndProjectionMatrix, inverseViewProjection);
}
// TODO: missing unity_CameraWorldClipPlanes[6], currently set by context.SetupCameraProperties
}
/// <summary>
/// Set camera matrices. This method will set <c>UNITY_MATRIX_V</c>, <c>UNITY_MATRIX_P</c>, <c>UNITY_MATRIX_VP</c> to camera matrices.
/// Additionally this will also set <c>unity_CameraProjection</c> and <c>unity_CameraProjection</c>.
/// If <c>setInverseMatrices</c> is set to true this function will also set <c>UNITY_MATRIX_I_V</c> and <c>UNITY_MATRIX_I_VP</c>.
/// This function has no effect when rendering in stereo. When in stereo rendering you cannot override camera matrices.
/// If you need to set general purpose view and projection matrices call <see cref="SetViewAndProjectionMatrices(CommandBuffer, Matrix4x4, Matrix4x4, bool)"/> instead.
/// </summary>
/// <param name="cmd">CommandBuffer to submit data to GPU.</param>
/// <param name="cameraData">CameraData containing camera matrices information.</param>
/// <param name="setInverseMatrices">Set this to true if you also need to set inverse camera matrices.</param>
public static void SetCameraMatrices(CommandBuffer cmd, ref CameraData cameraData, bool setInverseMatrices)
{
#if ENABLE_VR && ENABLE_XR_MODULE
if (cameraData.xr.enabled)
{
cameraData.xr.UpdateGPUViewAndProjectionMatrices(cmd, ref cameraData, cameraData.xr.renderTargetIsRenderTexture);
return;
}
#endif
Matrix4x4 viewMatrix = cameraData.GetViewMatrix();
Matrix4x4 projectionMatrix = cameraData.GetProjectionMatrix();
// TODO: Investigate why SetViewAndProjectionMatrices is causing y-flip / winding order issue
// for now using cmd.SetViewProjecionMatrices
//SetViewAndProjectionMatrices(cmd, viewMatrix, cameraData.GetDeviceProjectionMatrix(), setInverseMatrices);
cmd.SetViewProjectionMatrices(viewMatrix, projectionMatrix);
if (setInverseMatrices)
{
Matrix4x4 inverseViewMatrix = Matrix4x4.Inverse(viewMatrix);
cmd.SetGlobalMatrix(ShaderPropertyId.cameraToWorldMatrix, inverseViewMatrix);
Matrix4x4 viewAndProjectionMatrix = cameraData.GetGPUProjectionMatrix() * viewMatrix;
Matrix4x4 inverseViewProjection = Matrix4x4.Inverse(viewAndProjectionMatrix);
cmd.SetGlobalMatrix(ShaderPropertyId.inverseViewAndProjectionMatrix, inverseViewProjection);
}
// TODO: missing unity_CameraWorldClipPlanes[6], currently set by context.SetupCameraProperties
}
