示例#1
0
        void RenderMainLightCascadeShadowmap(ref ScriptableRenderContext context, ref CullResults cullResults, ref LightData lightData, ref ShadowData shadowData)
        {
            int shadowLightIndex = lightData.mainLightIndex;

            if (shadowLightIndex == -1)
            {
                return;
            }

            VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];

            CommandBuffer cmd = CommandBufferPool.Get(k_RenderMainLightShadowmapTag);

            using (new ProfilingSample(cmd, k_RenderMainLightShadowmapTag))
            {
                var settings = new DrawShadowsSettings(cullResults, shadowLightIndex);

                m_MainLightShadowmapTexture = RenderTexture.GetTemporary(shadowData.mainLightShadowmapWidth,
                                                                         shadowData.mainLightShadowmapHeight, k_ShadowmapBufferBits, m_ShadowmapFormat);
                m_MainLightShadowmapTexture.filterMode = FilterMode.Bilinear;
                m_MainLightShadowmapTexture.wrapMode   = TextureWrapMode.Clamp;
                SetRenderTarget(cmd, m_MainLightShadowmapTexture, RenderBufferLoadAction.DontCare,
                                RenderBufferStoreAction.Store, ClearFlag.Depth, Color.black, TextureDimension.Tex2D);

                for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
                {
                    settings.splitData.cullingSphere = m_CascadeSplitDistances[cascadeIndex];
                    Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].resolution);
                    ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
                    ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_CascadeSlices[cascadeIndex],
                                                  ref settings, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].viewMatrix);
                }

                SetupMainLightShadowReceiverConstants(cmd, ref shadowData, shadowLight);
            }

            CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadows, true);
            CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadowCascades, shadowData.mainLightShadowCascadesCount > 1);
            CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, shadowLight.light.shadows == LightShadows.Soft && shadowData.supportsSoftShadows);
            context.ExecuteCommandBuffer(cmd);
            CommandBufferPool.Release(cmd);
        }