public void UpdateDirectionalLights(ref Dictionary <Light, int> light_table, ref ScriptableRenderContext renderContext, List <Light> dirlights, Camera camera, ref CommandBuffer setup_properties)
{
if (helper_ == null)
{
return;
}
light_table.Clear();
//helper.name = camera.name + "_helper";
if (dirlights.Count == 0)
{
return;
}
Transform helper_trans = helper_.transform;
Matrix4x4 proj_mat = GL.GetGPUProjectionMatrix(camera.projectionMatrix, false) * camera.worldToCameraMatrix;
proj_mat = proj_mat.inverse;
//spilt the view frustrum
CascadeHelper cascadeHelper = new CascadeHelper(proj_mat, camera.transform.position, m_asset.cascadeNum);
//setup property
setup_properties.SetGlobalVector(shaderPropertyID.dirctionalShadowSplitDistance, cascadeHelper.SplitVolum(m_asset.cascadeDistribution, m_asset.shadowDistance));
setup_properties.SetGlobalInt(shaderPropertyID.maxCascadeNum, m_asset.cascadeNum);
setup_properties.SetGlobalVector(shaderPropertyID.dirShadowResolution, new Vector4((int)m_asset.directionalShadowResolution, (int)m_asset.directionalShadowResolution,
1f / (float)m_asset.directionalShadowResolution, 1f / (float)m_asset.directionalShadowResolution));
m_DirShadowArray.TestNeedModify((int)m_asset.directionalShadowResolution, (int)m_asset.directionalShadowResolution, dirlights.Count);
if (m_DirShadowArray.IsValid())
{
setup_properties.SetGlobalTexture(shaderPropertyID.dirShadowArray, m_DirShadowArray.data);
}
m_shadowcascade_matrix_vp.TestNeedModify(dirlights.Count);
if (m_shadowcascade_matrix_vp.IsValid())
{
setup_properties.SetGlobalBuffer(shaderPropertyID.shadowcascade_matrix_vp, m_shadowcascade_matrix_vp.data);
}
var cb = CommandBufferPool.Get("Directional light shadowmap");
List <ShadowCascadeMatrix> mts = new List <ShadowCascadeMatrix>();
for (int i = 0; i < dirlights.Count; i++)
{
var light = dirlights[i];
light_table[light] = i;
Matrix4x4 l2w = light.transform.localToWorldMatrix;
Vector4 dir = new Vector4(l2w.m02, l2w.m12, l2w.m22, 0);
cb.SetRenderTarget(m_DirShadowArray.data, 0, CubemapFace.Unknown, i);
cb.ClearRenderTarget(false, true, Color.clear);
renderContext.ExecuteCommandBuffer(cb);
cb.Clear();
Matrix4x4[] mats_per_light = new Matrix4x4[4];
for (int j = 0; j < m_asset.cascadeNum; j++)
{
//correct the forward of the helper camera to light dir
helper_trans.forward = dir;
float[] bias = cascadeHelper.GetCascadeVolum(helper_trans.worldToLocalMatrix, j);
helper_trans.position = new Vector3(bias[0], bias[1], bias[2]) - helper_trans.forward * m_asset.shadowDistance;
helper.orthographicSize = bias[4] / 2;
helper.farClipPlane = bias[5] + m_asset.shadowDistance;
helper.aspect = bias[3] / bias[4];
cb.ClearRenderTarget(true, false, Color.clear);
mats_per_light[j] = GL.GetGPUProjectionMatrix(helper.projectionMatrix, true) * helper.worldToCameraMatrix;
cb.SetGlobalMatrix(shaderPropertyID.shadow_mat, mats_per_light[j]);
renderContext.ExecuteCommandBuffer(cb);
cb.Clear();
var cullResults = new CullResults();
CullResults.Cull(helper, renderContext, out cullResults);
var filterSetting = new FilterRenderersSettings(true);
filterSetting.renderQueueRange = RenderQueueRange.opaque;
filterSetting.layerMask = helper.cullingMask;
var renderSetting = new DrawRendererSettings(camera, new ShaderPassName(string.Format("VRP_DS_{0:G}", j)));
renderSetting.sorting.flags = SortFlags.None;
renderContext.DrawRenderers(cullResults.visibleRenderers, ref renderSetting, filterSetting);
}
var mt = new ShadowCascadeMatrix();
mt.a = mats_per_light[0]; mt.b = mats_per_light[1]; mt.c = mats_per_light[2]; mt.d = mats_per_light[3];
mts.Add(mt);
}
CommandBufferPool.Release(cb);
m_shadowcascade_matrix_vp.data.SetData(mts);
}
public void UpdatePointLights(ref Dictionary <Light, int> light_table, ref ScriptableRenderContext renderContext, List <Light> plights, Camera camera, ref CommandBuffer setup_properties)
{
//todo: now will update every light for every camera, which is not totally necessary.
if (helper_ == null)
{
return;
}
if (plights.Count == 0)
{
return;
}
Transform helper_trans = helper_.transform;
m_PointShadowArray.TestNeedModify((int)m_asset.pointShadowResolution, (int)m_asset.pointShadowResolution, plights.Count);
if (m_PointShadowArray.IsValid())
{
setup_properties.SetGlobalTexture(shaderPropertyID.pointShadowArray, m_PointShadowArray.data);
}
m_pointLightMatrix.TestNeedModify(plights.Count);
if (m_pointLightMatrix.IsValid())
{
setup_properties.SetGlobalBuffer(shaderPropertyID.pointLightMatrixArray, m_pointLightMatrix.data);
}
helper_trans.up = Vector3.up;
helper.aspect = 1f;
var cb = CommandBufferPool.Get("Point light shadow map");
ShadowCascadeMatrix[] light_mats = new ShadowCascadeMatrix[plights.Count];
string tes = m_asset.enableTessellation ? "_TES" : "";
for (int i = 0; i < plights.Count; i++)
{
var light = plights[i];
light_table[light] = i;
helper_trans.position = light.transform.position;
helper.orthographicSize = light.range * 2;
helper.farClipPlane = light.range;
cb.SetRenderTarget(m_PointShadowArray.data, 0, CubemapFace.Unknown, i);
cb.ClearRenderTarget(true, true, Color.clear);
renderContext.ExecuteCommandBuffer(cb);
cb.Clear();
helper_trans.forward = Vector3.forward;
var mats = new ShadowCascadeMatrix();
mats.a = helper.worldToCameraMatrix;
mats.b = GL.GetGPUProjectionMatrix(helper.projectionMatrix, true);
cb.SetGlobalMatrix(shaderPropertyID.shadow_mat, mats.a);
cb.SetGlobalMatrix(shaderPropertyID.shadow_mat2, mats.b);
cb.SetGlobalVector(shaderPropertyID.shadow_Range, new Vector4(helper.farClipPlane, helper.farClipPlane));
renderContext.ExecuteCommandBuffer(cb);
cb.Clear();
var cullResults = new CullResults();
CullResults.Cull(helper, renderContext, out cullResults);
var filterSetting = new FilterRenderersSettings(true);
filterSetting.renderQueueRange = RenderQueueRange.opaque;
filterSetting.layerMask = helper.cullingMask;
var renderSetting = new DrawRendererSettings(camera, new ShaderPassName("VRP_PS_0" + tes));
renderSetting.sorting.flags = SortFlags.None;
renderContext.DrawRenderers(cullResults.visibleRenderers, ref renderSetting, filterSetting);
helper_trans.forward = -Vector3.forward;
mats.c = helper.worldToCameraMatrix;
mats.d = mats.b;
cb.ClearRenderTarget(true, false, Color.clear);
cb.SetGlobalMatrix("_Shadow_mat", mats.c);
renderContext.ExecuteCommandBuffer(cb);
cb.Clear();
cullResults = new CullResults();
CullResults.Cull(helper, renderContext, out cullResults);
renderSetting = new DrawRendererSettings(camera, new ShaderPassName("VRP_PS_1" + tes));
renderSetting.sorting.flags = SortFlags.None;
renderContext.DrawRenderers(cullResults.visibleRenderers, ref renderSetting, filterSetting);
light_mats[i] = mats;
}
CommandBufferPool.Release(cb);
m_pointLightMatrix.data.SetData(light_mats);
}
