67 lines
2.0 KiB
C#
67 lines
2.0 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Text;
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using UnityEngine;
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namespace Thousandto.Core.Base
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{
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/// <summary>
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/// 图形处理的工具类
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/// </summary>
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public class GraphicsUtils
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{
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//往renderTexture上画图,使用材质mat
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public static void Blit(RenderTexture renderTarget, Material mat)
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{
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Graphics.SetRenderTarget(renderTarget);
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if (renderTarget != null)
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{
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renderTarget.MarkRestoreExpected();
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}
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RenderQuad(mat);
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}
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//渲染一个矩形
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public static void RenderQuad(Material mat)
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{
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GL.PushMatrix(); //保存矩阵状态
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GL.LoadOrtho(); //加载正交
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mat.SetPass(0); //选择Pass{}
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GL.Begin(GL.QUADS); //开始画4边行
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GL.TexCoord2(0.0f, 1.0f); //设置UV
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GL.Vertex3(0.0f, 1.0f, 0.1f); //设置顶点
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GL.TexCoord2(1.0f, 1.0f);
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GL.Vertex3(1.0f, 1.0f, 0.1f);
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GL.TexCoord2(1.0f, 0.0f);
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GL.Vertex3(1.0f, 0.0f, 0.1f);
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GL.TexCoord2(0.0f, 0.0f);
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GL.Vertex3(0.0f, 0.0f, 0.1f);
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GL.End();
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GL.PopMatrix(); //弹出矩阵状态
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}
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//渲染一个矩形
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public static void RenderQuad(Material mat, Rect src, Rect dest)
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{
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GL.PushMatrix();
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GL.LoadOrtho();
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mat.SetPass(0);
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GL.Begin(GL.QUADS);
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GL.TexCoord2(0.0f, 1.0f);
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GL.Vertex3(src.xMin / dest.width, src.yMax / dest.height, 0.1f);
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GL.TexCoord2(1.0f, 1.0f);
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GL.Vertex3(src.xMax / dest.width, src.yMax / dest.height, 0.1f);
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GL.TexCoord2(1.0f, 0.0f);
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GL.Vertex3(src.xMax / dest.width, src.yMin / dest.height, 0.1f);
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GL.TexCoord2(0.0f, 0.0f);
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GL.Vertex3(src.xMin / dest.width, src.yMin / dest.height, 0.1f);
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GL.End();
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GL.PopMatrix();
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}
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}
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}
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