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using System;
using UnityEngine;
namespace XMainClient
{
public class ShadowMapInfo
{
private const int m_shadowMapWidth = 512;
private const int m_shadowMapHeight = 512;
public RenderTexture shadowMap = null;
public const int RChannel = 1;
public const int GChannel = 2;
public const int BChannel = 4;
public const int AChannel = 8;
public const int EmpytChannel = 0;
private int m_shadowChannelState = 0;
private static bool hasShadowMap = false;
public void CreateShadowMap()
{
this.shadowMap = new RenderTexture(512, 512, 0,(RenderTextureFormat)16, 0);
this.shadowMap.name = "ShadowMap";
this.shadowMap.autoGenerateMips = false;
this.shadowMap.Create();
Shader.SetGlobalTexture("_CustomShadowMapTexture", this.shadowMap);
Shader.SetGlobalFloat("shadowScale", XCustomShadow.scale);
ShadowMapInfo.hasShadowMap = true;
ShadowMapInfo.EnableShadow(true);
}
public void DestroyShadowMap()
{
bool flag = this.shadowMap != null;
if (flag)
{
this.shadowMap.Release();
this.shadowMap = null;
ShadowMapInfo.hasShadowMap = false;
}
}
public static void ClearShadowRes()
{
Shader.SetGlobalTexture("_CustomShadowMapTexture", null);
ShadowMapInfo.EnableShadow(false);
}
public static void EnableShadow(bool enable)
{
bool flag = enable && ShadowMapInfo.hasShadowMap;
if (flag)
{
Shader.EnableKeyword("CUSTOM_SHADOW_ON");
}
else
{
Shader.DisableKeyword("CUSTOM_SHADOW_ON");
}
}
public int AllocChannel()
{
bool flag = (this.m_shadowChannelState & 1) == 0;
int result;
if (flag)
{
this.m_shadowChannelState |= 1;
result = 1;
}
else
{
bool flag2 = (this.m_shadowChannelState & 2) == 0;
if (flag2)
{
this.m_shadowChannelState |= 2;
result = 2;
}
else
{
bool flag3 = (this.m_shadowChannelState & 4) == 0;
if (flag3)
{
this.m_shadowChannelState |= 4;
result = 4;
}
else
{
bool flag4 = (this.m_shadowChannelState & 8) == 0;
if (flag4)
{
this.m_shadowChannelState |= 8;
result = 8;
}
else
{
result = 0;
}
}
}
}
return result;
}
public void FreeChannel(int channle)
{
this.m_shadowChannelState &= ~channle;
}
public void Clear()
{
this.m_shadowChannelState = 0;
this.DestroyShadowMap();
}
}
}
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