namespace UnityEngine.PostProcessing
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{
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using UnityObject = Object;
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public static class GraphicsUtils
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{
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public static bool isLinearColorSpace
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{
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get { return QualitySettings.activeColorSpace == ColorSpace.Linear; }
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}
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public static bool supportsDX11
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{
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#if UNITY_WEBGL
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get { return false; }
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#else
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get { return SystemInfo.graphicsShaderLevel >= 50 && SystemInfo.supportsComputeShaders; }
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#endif
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}
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static Texture2D s_WhiteTexture;
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public static Texture2D whiteTexture
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{
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get
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{
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if (s_WhiteTexture != null)
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return s_WhiteTexture;
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s_WhiteTexture = new Texture2D(1, 1, TextureFormat.ARGB32, false);
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s_WhiteTexture.SetPixel(0, 0, new Color(1f, 1f, 1f, 1f));
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s_WhiteTexture.Apply();
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return s_WhiteTexture;
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}
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}
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static Mesh s_Quad;
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public static Mesh quad
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{
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get
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{
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if (s_Quad != null)
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return s_Quad;
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var vertices = new[]
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{
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new Vector3(-1f, -1f, 0f),
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new Vector3( 1f, 1f, 0f),
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new Vector3( 1f, -1f, 0f),
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new Vector3(-1f, 1f, 0f)
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};
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var uvs = new[]
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{
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new Vector2(0f, 0f),
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new Vector2(1f, 1f),
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new Vector2(1f, 0f),
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new Vector2(0f, 1f)
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};
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var indices = new[] { 0, 1, 2, 1, 0, 3 };
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s_Quad = new Mesh
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{
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vertices = vertices,
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uv = uvs,
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triangles = indices
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};
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s_Quad.RecalculateNormals();
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s_Quad.RecalculateBounds();
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return s_Quad;
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}
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}
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// Useful when rendering to MRT
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public static void Blit(Material material, int pass)
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{
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GL.PushMatrix();
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{
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GL.LoadOrtho();
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material.SetPass(pass);
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GL.Begin(GL.TRIANGLE_STRIP);
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{
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GL.TexCoord2(0f, 0f); GL.Vertex3(0f, 0f, 0.1f);
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GL.TexCoord2(1f, 0f); GL.Vertex3(1f, 0f, 0.1f);
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GL.TexCoord2(0f, 1f); GL.Vertex3(0f, 1f, 0.1f);
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GL.TexCoord2(1f, 1f); GL.Vertex3(1f, 1f, 0.1f);
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}
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GL.End();
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}
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GL.PopMatrix();
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}
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public static void ClearAndBlit(Texture source, RenderTexture destination, Material material, int pass, bool clearColor = true, bool clearDepth = false)
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{
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var oldRT = RenderTexture.active;
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RenderTexture.active = destination;
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GL.Clear(false, clearColor, Color.clear);
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GL.PushMatrix();
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{
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GL.LoadOrtho();
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material.SetTexture("_MainTex", source);
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material.SetPass(pass);
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GL.Begin(GL.TRIANGLE_STRIP);
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{
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GL.TexCoord2(0f, 0f); GL.Vertex3(0f, 0f, 0.1f);
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GL.TexCoord2(1f, 0f); GL.Vertex3(1f, 0f, 0.1f);
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GL.TexCoord2(0f, 1f); GL.Vertex3(0f, 1f, 0.1f);
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GL.TexCoord2(1f, 1f); GL.Vertex3(1f, 1f, 0.1f);
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}
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GL.End();
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}
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GL.PopMatrix();
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RenderTexture.active = oldRT;
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}
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public static void Destroy(UnityObject obj)
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{
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if (obj != null)
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{
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#if UNITY_EDITOR
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if (Application.isPlaying)
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UnityObject.Destroy(obj);
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else
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UnityObject.DestroyImmediate(obj);
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#else
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UnityObject.Destroy(obj);
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#endif
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}
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}
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public static void Dispose()
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{
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Destroy(s_Quad);
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}
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}
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}
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