private void RenderCamera(ref ScriptableRenderContext context, Camera camera)
{
if (m_ShadowMap == null)
{
m_ShadowMap = new RenderTexture(1024, 1024, 24, RenderTextureFormat.Shadowmap);
m_ShadowMap.name = "Shadow Map";
m_ShadowMap.Create();
}
if (camera.TryGetCullingParameters(out ScriptableCullingParameters cullingParameters))
{
// Start camera render
RenderPipeline.BeginCameraRendering(context, camera);
cullingParameters.shadowDistance = 30;
// Perform culling operations
CullingResults cullingResults = context.Cull(ref cullingParameters);
// Shadow map rendering
Matrix4x4 worldToShadowMatrix = Matrix4x4.identity;
bool didRenderShadowMap = RenderShadowMaps(ref context, ref cullingResults, ref worldToShadowMatrix);
// Setup camera for rendering
context.SetupCameraProperties(camera);
// Clear camera
CommandBuffer cb_ClearCamera = new CommandBuffer();
cb_ClearCamera.name = "ClearCamera";
cb_ClearCamera.SetRenderTarget(camera.targetTexture);
cb_ClearCamera.ClearRenderTarget(true, true, camera.backgroundColor);
context.ExecuteCommandBuffer(cb_ClearCamera);
// Draw opaque objects
SortingSettings sortSettings = new SortingSettings(camera);
sortSettings.criteria = SortingCriteria.CommonOpaque;
FilteringSettings filterSettings = FilteringSettings.defaultValue;
filterSettings.renderQueueRange = RenderQueueRange.opaque;
if (didRenderShadowMap)
{
CommandBuffer cb = new CommandBuffer();
cb.name = "Set up shadow shader properties";
cb.SetGlobalTexture("_ShadowMapTexture", m_ShadowMap);
cb.SetGlobalMatrix("_WorldToShadowMatrix", worldToShadowMatrix);
cb.SetGlobalVector("_LightDirection", -cullingResults.visibleLights[0].light.transform.forward); // Direction towards the light
context.ExecuteCommandBuffer(cb);
}
DrawingSettings opaqueDrawSettings = new DrawingSettings(s_OpaquePassTag, sortSettings);
context.DrawRenderers(cullingResults, ref opaqueDrawSettings, ref filterSettings);
// Draw skybox
context.DrawSkybox(camera);
// Final submission
context.Submit();
// End camera render
RenderPipeline.EndCameraRendering(context, camera);
}
}