private void Setup(ScriptableRenderContext context, ref MyRenderingData renderingData)
{
if (!rtCreated)
{
rtCreated = true;
var camera = renderingData.camera;
var cmd = CommandBufferPool.Get();
renderingData.colorBufferFormat =
settings.HDR ? RenderTextureFormat.DefaultHDR : RenderTextureFormat.Default;
colorTarget = Shader.PropertyToID("_ColorTarget");
depthTarget = Shader.PropertyToID("_DepthTarget");
cmd.GetTemporaryRT(colorTarget, camera.pixelWidth, camera.pixelHeight, 0, FilterMode.Point,
renderingData.colorBufferFormat);
cmd.GetTemporaryRT(depthTarget, camera.pixelWidth, camera.pixelHeight, 32, FilterMode.Point,
RenderTextureFormat.Depth);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
CommandBufferPool.Release(cmd);
}
renderingData.colorTarget = colorTarget;
renderingData.depthTarget = depthTarget;
}
private void Cleanup(ScriptableRenderContext context, ref MyRenderingData renderingData)
{
var cmd = CommandBufferPool.Get();
cmd.ReleaseTemporaryRT(colorTarget);
cmd.ReleaseTemporaryRT(depthTarget);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
CommandBufferPool.Release(cmd);
rtCreated = false;
}
protected virtual void RenderCamera(ScriptableRenderContext context, Camera camera)
{
camera.TryGetCullingParameters(out var cullingParameters);
var cmd = CommandBufferPool.Get(camera.name);
cmd.Clear();
#if UNITY_EDITOR
//Emit UI
if (camera.cameraType == CameraType.SceneView)
{
ScriptableRenderContext.EmitWorldGeometryForSceneView(camera);
}
#endif
var cullResults = context.Cull(ref cullingParameters);
var projectionMat = camera.projectionMatrix;
var jitteredProjectionMat = projectionMat;
//隔帧数抖动
jitteredProjectionMat.m02 += (projectionJitter.Current.x * 2 - 1) / camera.pixelWidth;
jitteredProjectionMat.m12 += (projectionJitter.Current.y * 2 - 1) / camera.pixelHeight;
var renderingData = new MyRenderingData()
{
camera = camera,
cullResults = cullResults,
colorTarget = BuiltinRenderTextureType.CameraTarget,
depthTarget = BuiltinRenderTextureType.CameraTarget,
colorBufferFormat = RenderTextureFormat.Default,
shadowMapData = new Dictionary <Light, MyShadowMapData>(),
frameID = frameID,
discardFrameBuffer = true,
viewMatrix = camera.worldToCameraMatrix,
projectionMatrix = projectionMat,
jitteredProjectionMatrix = jitteredProjectionMat,
projectionJitter = projectionJitter.Current,
nextProjectionJitter = new Vector2(0.5f, 0.5f),
resolutionScale = settings.ResolutionScale
};
Setup(context, ref renderingData);
context.SetupCameraProperties(camera, false);
InitRenderQueue(camera);
SetupLight(ref renderingData);
cmd.SetRenderTarget(colorTarget, RenderBufferLoadAction.DontCare, RenderBufferStoreAction.Store, depthTarget,
RenderBufferLoadAction.DontCare, RenderBufferStoreAction.Store);
cmd.ClearRenderTarget(true, true, Color.black, 1);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
context.DrawSkybox(camera);
foreach (var pass in renderPassQueue)
{
pass.Setup(context, ref renderingData);
pass.Render(context, ref renderingData);
}
foreach (var pass in globalUserPasses)
{
pass.Setup(context, ref renderingData);
pass.Render(context, ref renderingData);
}
var userPasses = camera.GetComponents <MyUserPass>();
foreach (var pass in userPasses)
{
if (pass.global)
{
continue;
}
pass.Setup(context, ref renderingData);
pass.Render(context, ref renderingData);
}
cmd.SetViewProjectionMatrices(renderingData.viewMatrix, renderingData.projectionMatrix);
cmd.Blit(renderingData.colorTarget, BuiltinRenderTextureType.CameraTarget);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
if (camera.cameraType == CameraType.SceneView)
{
//draw Gizmos
context.DrawGizmos(camera, GizmoSubset.PreImageEffects);
context.DrawGizmos(camera, GizmoSubset.PostImageEffects);
}
foreach (var pass in renderPassQueue)
{
pass.Cleanup(context, ref renderingData);
}
foreach (var pass in globalUserPasses)
{
pass.Cleanup(context, ref renderingData);
}
foreach (var pass in userPasses)
{
pass.Cleanup(context, ref renderingData);
}
Cleanup(context, ref renderingData);
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
context.Submit();
projectionJitter.Next = renderingData.nextProjectionJitter;
}
private void SetupLight(ref MyRenderingData renderingData)
{
renderingData.lights = renderingData.cullResults.visibleLights;
}