public void Init(Shader bakeShader, Shader mixShader, BakeSettings settings)
{
m_Camera = GetComponent <Camera>();
m_CommandBuffer = new CommandBuffer();
m_Camera.AddCommandBuffer(CameraEvent.AfterImageEffectsOpaque, m_CommandBuffer);
m_BakeMaterial = new Material(bakeShader);
m_MixMaterial = new Material(mixShader);
float weight = 1.0f / (settings.numSamples * 3);
m_MixMaterial.SetFloat("_MixFactor", weight);
m_BakeMaterial.SetFloat("_TraceRadius", settings.traceRadius);
m_BakeMaterial.SetFloat("_CullBack", settings.cullBack ? 1.0f : 0.0f);
m_PreTex = RenderTexture.GetTemporary(settings.aoMapSize, settings.aoMapSize);
m_PreTex.DiscardContents(true, true);
m_Settings = settings;
m_Sampler = CreateSampler(settings.samplerType, settings.numSamples);
}
/// <summary>
/// 烘焙场景
/// </summary>
/// <param name="target"></param>
/// <param name="batches"></param>
/// <param name="settings"></param>
/// <returns></returns>
public static Texture2D BakeScene(MeshRenderer target, List <AOBakeBatch> batches, BakeSettings settings)
{
if (batches == null || batches.Count <= 0)
{
return(null);
}
if (!target)
{
return(null);
}
Shader bakeShader = AssetDatabase.LoadAssetAtPath <Shader>(AOBakeConstants.kAOBakeShader);
Shader mixShader = AssetDatabase.LoadAssetAtPath <Shader>(AOBakeConstants.kAOMixShader);
if (!bakeShader)
{
Debug.LogError("Shader Missing! :" + AOBakeConstants.kAOBakeShader);
return(null);
}
if (!mixShader)
{
Debug.LogError("Shader Missing! :" + AOBakeConstants.kAOMixShader);
return(null);
}
Camera cam = new GameObject("[BakeCam]").AddComponent <Camera>();
cam.gameObject.hideFlags = HideFlags.HideAndDontSave;
cam.enabled = false;
cam.clearFlags = CameraClearFlags.SolidColor;
cam.cullingMask = 0;
cam.backgroundColor = new Color(0, 0, 0, 0);
var script = cam.gameObject.AddComponent <AOBakeCamera>();
script.Init(bakeShader, mixShader, settings);
var result = script.Render(batches, target, RaytracingCallBack);
Texture2D texture = null;
if (result)
{
texture = RenderTextureToTexture(result);
RenderTexture.ReleaseTemporary(result);
}
Object.DestroyImmediate(cam.gameObject);
EditorUtility.ClearProgressBar();
return(texture);
}
