public static void ApplySliceTransform(ref ShadowSliceData shadowSliceData, int atlasWidth, int atlasHeight)
{
Matrix4x4 sliceTransform = Matrix4x4.identity;
float oneOverAtlasWidth = 1.0f / atlasWidth;
float oneOverAtlasHeight = 1.0f / atlasHeight;
sliceTransform.m00 = shadowSliceData.resolution * oneOverAtlasWidth;
sliceTransform.m11 = shadowSliceData.resolution * oneOverAtlasHeight;
sliceTransform.m03 = shadowSliceData.offsetX * oneOverAtlasWidth;
sliceTransform.m13 = shadowSliceData.offsetY * oneOverAtlasHeight;
// Apply shadow slice scale and offset
shadowSliceData.shadowTransform = sliceTransform * shadowSliceData.shadowTransform;
}
public static void RenderShadowSlice(CommandBuffer cmd, ref ScriptableRenderContext context,
ref ShadowSliceData shadowSliceData, ref ShadowDrawingSettings settings,
Matrix4x4 proj, Matrix4x4 view)
{
cmd.SetViewport(new Rect(shadowSliceData.offsetX, shadowSliceData.offsetY, shadowSliceData.resolution, shadowSliceData.resolution));
cmd.EnableScissorRect(new Rect(shadowSliceData.offsetX + 4, shadowSliceData.offsetY + 4, shadowSliceData.resolution - 8, shadowSliceData.resolution - 8));
cmd.SetViewProjectionMatrices(view, proj);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
context.DrawShadows(ref settings);
cmd.DisableScissorRect();
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
}
public static bool ExtractDirectionalLightMatrix(ref CullingResults cullResults, ref ShadowData shadowData, int shadowLightIndex, int cascadeIndex, int shadowResolution, float shadowNearPlane, out Vector4 cascadeSplitDistance, out ShadowSliceData shadowSliceData, out Matrix4x4 viewMatrix, out Matrix4x4 projMatrix)
{
ShadowSplitData splitData;
bool success = cullResults.ComputeDirectionalShadowMatricesAndCullingPrimitives(shadowLightIndex,
cascadeIndex, shadowData.mainLightShadowCascadesCount, shadowData.mainLightShadowCascadesSplit, shadowResolution, shadowNearPlane, out viewMatrix, out projMatrix,
out splitData);
cascadeSplitDistance = splitData.cullingSphere;
shadowSliceData.offsetX = (cascadeIndex % 2) * shadowResolution;
shadowSliceData.offsetY = (cascadeIndex / 2) * shadowResolution;
shadowSliceData.resolution = shadowResolution;
shadowSliceData.viewMatrix = viewMatrix;
shadowSliceData.projectionMatrix = projMatrix;
shadowSliceData.shadowTransform = GetShadowTransform(projMatrix, viewMatrix);
// If we have shadow cascades baked into the atlas we bake cascade transform
// in each shadow matrix to save shader ALU and L/S
if (shadowData.mainLightShadowCascadesCount > 1)
{
ApplySliceTransform(ref shadowSliceData, shadowData.mainLightShadowmapWidth, shadowData.mainLightShadowmapHeight);
}
return(success);
}
/// <inheritdoc/>
public override void Execute(ScriptableRenderer renderer, ScriptableRenderContext context, ref RenderingData renderingData)
{
if (renderer == null)
{
throw new ArgumentNullException("renderer");
}
if (!renderingData.shadowData.supportsMainCharacterShadows)
{
return;
}
LightData lightData = renderingData.lightData;
int shadowLightIndex = lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return;
}
VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];
ShadowData shadowData = renderingData.shadowData;
if (!GetVPMatrix(shadowLight.light))
{
return;
}
CommandBuffer cmd = CommandBufferPool.Get(k_RenderMainCharacterShadowmapTag);
using (new ProfilingSample(cmd, k_RenderMainCharacterShadowmapTag))
{
m_MainCharacterShadowmapTexture = RenderTexture.GetTemporary(shadowData.mainCharacterShadowmapWidth,
shadowData.mainCharacterShadowmapHeight, k_ShadowmapBufferBits, m_ShadowmapFormat);
m_MainCharacterShadowmapTexture.filterMode = FilterMode.Bilinear;
m_MainCharacterShadowmapTexture.wrapMode = TextureWrapMode.Clamp;
m_MainCharacterShadowmapTexture.name = "m_MainCharacterShadowmapTexture";
SetRenderTarget(cmd, m_MainCharacterShadowmapTexture, RenderBufferLoadAction.DontCare,
RenderBufferStoreAction.Store, ClearFlag.Depth, Color.black, TextureDimension.Tex2D);
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, m_ProjMatrix, shadowData.mainCharacterShadowmapWidth);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
cmd.SetViewProjectionMatrices(m_ViewMatrix, m_ProjMatrix);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
//foreach (var r in _Renderers)
//{
// for (int i = 0, imax = r.sharedMaterials.Length; i < imax; i++)
// {
// cmd.DrawRenderer(r, r.sharedMaterials[i], i, r.sharedMaterials[i].FindPass("ShadowCaster"));
// }
//}
ShadowSliceData slice = new ShadowSliceData()
{
offsetX = 0,
offsetY = 0,
resolution = shadowData.mainCharacterShadowmapWidth
};
DrawShadowsSettings settings = new DrawShadowsSettings(renderingData.cullResults, shadowLightIndex);
settings.splitData.cullingSphere = m_CullingSphere;
ShadowUtils.RenderShadowSlice(cmd, ref context, ref slice, ref settings, m_ProjMatrix, m_ViewMatrix);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
SetupMainCharacterShadowReceiverConstants(cmd, ref shadowData, shadowLight);
}
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainCharacterShadows, true);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, shadowLight.light.shadows == LightShadows.Soft && shadowData.supportsSoftShadows);
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
/// <inheritdoc/>
public override void Execute(ScriptableRenderer renderer, ScriptableRenderContext context, ref RenderingData renderingData)
{
if (renderer == null)
{
throw new ArgumentNullException("renderer");
}
if (!renderingData.shadowData.supportsDeepShadowMaps)
{
return;
}
LightData lightData = renderingData.lightData;
int shadowLightIndex = lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return;
}
VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];
ShadowData shadowData = renderingData.shadowData;
if (!GetVPMatrix(shadowLight.light))
{
return;
}
if (null == _ResetCompute)
{
_ResetCompute = renderer.GetCompute(ComputeHandle.ResetDeepShadowDataCompute);
KernelResetBuffer = _ResetCompute.FindKernel("KernelResetBuffer");
}
CommandBuffer cmd = CommandBufferPool.Get(k_RenderDeepShadowCaster);
using (new ProfilingSample(cmd, k_RenderDeepShadowCaster))
{
int deepShadowMapsSize = shadowData.deepShadowMapsSize;
int deepShadowMapsDepth = shadowData.deepShadowMapsDepth;
// Reset
cmd.SetComputeBufferParam(_ResetCompute, KernelResetBuffer, "_CountBuffer", _CountBuffer);
cmd.SetComputeBufferParam(_ResetCompute, KernelResetBuffer, "_DataBuffer", _DataBuffer);
cmd.SetComputeIntParam(_ResetCompute, "_DeepShadowMapSize", deepShadowMapsSize);
cmd.SetComputeIntParam(_ResetCompute, "_DeepShadowMapDepth", deepShadowMapsDepth);
cmd.DispatchCompute(_ResetCompute, KernelResetBuffer, deepShadowMapsSize / 8, deepShadowMapsSize / 8, 1);
_Temp = RenderTexture.GetTemporary(deepShadowMapsSize, deepShadowMapsSize, 0, RenderTextureFormat.R8); //Without rt, the second row of the vp matrix is negated
// Cast
SetRenderTarget(cmd, _Temp, RenderBufferLoadAction.DontCare, RenderBufferStoreAction.DontCare,
ClearFlag.Color, Color.black, TextureDimension.Tex2D);
cmd.SetViewport(new Rect(Vector2.zero, Vector2.one * deepShadowMapsSize));
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, _ProjMatrix, shadowData.deepShadowMapsSize);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
cmd.SetViewProjectionMatrices(_ViewMatrix, _ProjMatrix);
cmd.SetRandomWriteTarget(1, _CountBuffer);
cmd.SetRandomWriteTarget(2, _DataBuffer);
cmd.SetGlobalInt("_DeepShadowMapSize", deepShadowMapsSize);
cmd.SetGlobalInt("_DeepShadowMapDepth", deepShadowMapsDepth);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
//foreach (var r in _Renderers)
//{
// for (int i = 0, imax = r.sharedMaterials.Length; i < imax; i++)
// {
// cmd.DrawRenderer(r, r.sharedMaterials[i], i, r.sharedMaterials[i].FindPass("DeepShadowCaster"));
// }
//}
ShadowSliceData slice = new ShadowSliceData()
{
offsetX = 0,
offsetY = 0,
resolution = deepShadowMapsSize,
};
cmd.SetGlobalMatrix("_DeepShadowMapsWorldToShadow", _DeepShadowMatrix);
DrawShadowsSettings settings = new DrawShadowsSettings(renderingData.cullResults, shadowLightIndex);
settings.splitData.cullingSphere = _CullingSphere;
cmd.EnableShaderKeyword("_DEEP_SHADOW_CASTER");
cmd.SetGlobalInt("_ShadowCasterZWrite", 0);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref slice, ref settings, _ProjMatrix, _ViewMatrix);
cmd.DisableShaderKeyword("_DEEP_SHADOW_CASTER");
cmd.SetGlobalInt("_ShadowCasterZWrite", 1);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
// For Resolve
SetupDeepShadowMapResolverConstants(cmd, ref shadowData, shadowLight);
cmd.ClearRandomWriteTargets();
}
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
