523 lines
28 KiB
C#
523 lines
28 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine.Experimental.Rendering;
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using UnityEngine.Assertions;
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using System.Text.RegularExpressions;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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namespace UnityEngine.Rendering
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{
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/// <summary>
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/// Various blit (texture copy) utilities for the Scriptable Render Pipelines.
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/// </summary>
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public static class Blitter
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{
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static Material s_Blit;
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static Material s_BlitTexArray;
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static Material s_BlitTexArraySingleSlice;
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static Material s_BlitColorAndDepth;
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static MaterialPropertyBlock s_PropertyBlock = new MaterialPropertyBlock();
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static Mesh s_TriangleMesh;
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static Mesh s_QuadMesh;
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static class BlitShaderIDs
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{
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public static readonly int _BlitTexture = Shader.PropertyToID("_BlitTexture");
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public static readonly int _BlitCubeTexture = Shader.PropertyToID("_BlitCubeTexture");
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public static readonly int _BlitScaleBias = Shader.PropertyToID("_BlitScaleBias");
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public static readonly int _BlitScaleBiasRt = Shader.PropertyToID("_BlitScaleBiasRt");
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public static readonly int _BlitMipLevel = Shader.PropertyToID("_BlitMipLevel");
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public static readonly int _BlitTextureSize = Shader.PropertyToID("_BlitTextureSize");
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public static readonly int _BlitPaddingSize = Shader.PropertyToID("_BlitPaddingSize");
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public static readonly int _InputDepth = Shader.PropertyToID("_InputDepthTexture");
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}
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/// <summary>
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/// Initialize Blitter resources. Must be called once before any use
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/// </summary>
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/// <param name="blitPS"></param> Blit shader
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/// <param name="blitColorAndDepthPS"></param> Blit shader
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public static void Initialize(Shader blitPS, Shader blitColorAndDepthPS)
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{
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s_Blit = CoreUtils.CreateEngineMaterial(blitPS);
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s_BlitColorAndDepth = CoreUtils.CreateEngineMaterial(blitColorAndDepthPS);
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// With texture array enabled, we still need the normal blit version for other systems like atlas
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if (TextureXR.useTexArray)
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{
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s_Blit.EnableKeyword("DISABLE_TEXTURE2D_X_ARRAY");
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s_BlitTexArray = CoreUtils.CreateEngineMaterial(blitPS);
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s_BlitTexArraySingleSlice = CoreUtils.CreateEngineMaterial(blitPS);
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s_BlitTexArraySingleSlice.EnableKeyword("BLIT_SINGLE_SLICE");
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}
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if (SystemInfo.graphicsShaderLevel < 30)
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{
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/*UNITY_NEAR_CLIP_VALUE*/
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float nearClipZ = -1;
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if (SystemInfo.usesReversedZBuffer)
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nearClipZ = 1;
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if (!s_TriangleMesh)
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{
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s_TriangleMesh = new Mesh();
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s_TriangleMesh.vertices = GetFullScreenTriangleVertexPosition(nearClipZ);
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s_TriangleMesh.uv = GetFullScreenTriangleTexCoord();
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s_TriangleMesh.triangles = new int[3] { 0, 1, 2 };
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}
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if (!s_QuadMesh)
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{
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s_QuadMesh = new Mesh();
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s_QuadMesh.vertices = GetQuadVertexPosition(nearClipZ);
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s_QuadMesh.uv = GetQuadTexCoord();
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s_QuadMesh.triangles = new int[6] { 0, 1, 2, 0, 2, 3 };
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}
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// Should match Common.hlsl
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static Vector3[] GetFullScreenTriangleVertexPosition(float z /*= UNITY_NEAR_CLIP_VALUE*/)
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{
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var r = new Vector3[3];
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for (int i = 0; i < 3; i++)
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{
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Vector2 uv = new Vector2((i << 1) & 2, i & 2);
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r[i] = new Vector3(uv.x * 2.0f - 1.0f, uv.y * 2.0f - 1.0f, z);
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}
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return r;
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}
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// Should match Common.hlsl
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static Vector2[] GetFullScreenTriangleTexCoord()
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{
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var r = new Vector2[3];
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for (int i = 0; i < 3; i++)
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{
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if (SystemInfo.graphicsUVStartsAtTop)
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r[i] = new Vector2((i << 1) & 2, 1.0f - (i & 2));
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else
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r[i] = new Vector2((i << 1) & 2, i & 2);
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}
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return r;
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}
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// Should match Common.hlsl
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static Vector3[] GetQuadVertexPosition(float z /*= UNITY_NEAR_CLIP_VALUE*/)
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{
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var r = new Vector3[4];
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for (uint i = 0; i < 4; i++)
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{
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uint topBit = i >> 1;
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uint botBit = (i & 1);
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float x = topBit;
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float y = 1 - (topBit + botBit) & 1; // produces 1 for indices 0,3 and 0 for 1,2
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r[i] = new Vector3(x, y, z);
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}
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return r;
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}
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// Should match Common.hlsl
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static Vector2[] GetQuadTexCoord()
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{
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var r = new Vector2[4];
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for (uint i = 0; i < 4; i++)
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{
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uint topBit = i >> 1;
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uint botBit = (i & 1);
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float u = topBit;
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float v = (topBit + botBit) & 1; // produces 0 for indices 0,3 and 1 for 1,2
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if (SystemInfo.graphicsUVStartsAtTop)
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v = 1.0f - v;
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r[i] = new Vector2(u, v);
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}
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return r;
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}
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}
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}
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/// <summary>
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/// Release Blitter resources.
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/// </summary>
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public static void Cleanup()
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{
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CoreUtils.Destroy(s_Blit);
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CoreUtils.Destroy(s_BlitTexArray);
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CoreUtils.Destroy(s_BlitTexArraySingleSlice);
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}
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/// <summary>
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/// Returns the default blit material.
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/// </summary>
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/// <param name="dimension">Dimension of the texture to blit, either 2D or 2D Array.</param>
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/// <param name="singleSlice">Blit only a single slice of the array if applicable.</param>
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/// <returns></returns>
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static public Material GetBlitMaterial(TextureDimension dimension, bool singleSlice = false)
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{
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bool useTexArray = dimension == TextureDimension.Tex2DArray;
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return useTexArray ? (singleSlice ? s_BlitTexArraySingleSlice : s_BlitTexArray) : s_Blit;
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}
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static private void DrawTriangle(CommandBuffer cmd, Material material, int shaderPass)
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{
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if (SystemInfo.graphicsShaderLevel < 30)
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cmd.DrawMesh(s_TriangleMesh, Matrix4x4.identity, material, 0, shaderPass, s_PropertyBlock);
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else
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cmd.DrawProcedural(Matrix4x4.identity, material, shaderPass, MeshTopology.Triangles, 3, 1, s_PropertyBlock);
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}
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static internal void DrawQuad(CommandBuffer cmd, Material material, int shaderPass)
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{
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if (SystemInfo.graphicsShaderLevel < 30)
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cmd.DrawMesh(s_QuadMesh, Matrix4x4.identity, material, 0, shaderPass, s_PropertyBlock);
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else
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cmd.DrawProcedural(Matrix4x4.identity, material, shaderPass, MeshTopology.Quads, 4, 1, s_PropertyBlock);
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}
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/// <summary>
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/// Blit a RTHandle texture.
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="scaleBias">Scale and bias for sampling the input texture.</param>
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/// <param name="mipLevel">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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public static void BlitTexture(CommandBuffer cmd, RTHandle source, Vector4 scaleBias, float mipLevel, bool bilinear)
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{
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevel);
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BlitTexture(cmd, source, scaleBias, GetBlitMaterial(TextureXR.dimension), bilinear ? 1 : 0);
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}
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/// <summary>
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/// Blit a RTHandle texture 2D.
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="scaleBias">Scale and bias for sampling the input texture.</param>
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/// <param name="mipLevel">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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public static void BlitTexture2D(CommandBuffer cmd, RTHandle source, Vector4 scaleBias, float mipLevel, bool bilinear)
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{
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevel);
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BlitTexture(cmd, source, scaleBias, GetBlitMaterial(TextureDimension.Tex2D), bilinear ? 1 : 0);
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}
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/// <summary>
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/// Blit a 2D texture and depth buffer.
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="sourceColor">Source Texture for color.</param>
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/// <param name="sourceDepth">Source RenderTexture for depth.</param>
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/// <param name="scaleBias">Scale and bias for sampling the input texture.</param>
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/// <param name="mipLevel">Mip level to blit.</param>
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/// <param name="blitDepth">Enable depth blit.</param>
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public static void BlitColorAndDepth(CommandBuffer cmd, Texture sourceColor, RenderTexture sourceDepth, Vector4 scaleBias, float mipLevel, bool blitDepth)
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{
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevel);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBias);
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s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, sourceColor);
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if (blitDepth)
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s_PropertyBlock.SetTexture(BlitShaderIDs._InputDepth, sourceDepth, RenderTextureSubElement.Depth);
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DrawTriangle(cmd, s_BlitColorAndDepth, blitDepth ? 1 : 0);
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}
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/// <summary>
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/// Blit a RTHandle texture
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="scaleBias">Scale and bias for sampling the input texture.</param>
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/// <param name="material">Material to invoke when blitting.</param>
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/// <param name="pass">Pass idx within the material to invoke.</param>
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public static void BlitTexture(CommandBuffer cmd, RTHandle source, Vector4 scaleBias, Material material, int pass)
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{
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBias);
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s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, source);
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DrawTriangle(cmd, material, pass);
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}
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/// <summary>
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/// Blit a RTHandle to another RTHandle.
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/// This will properly account for partial usage (in term of resolution) of the texture for the current viewport.
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="destination">Destination RTHandle.</param>
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/// <param name="mipLevel">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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public static void BlitCameraTexture(CommandBuffer cmd, RTHandle source, RTHandle destination, float mipLevel = 0.0f, bool bilinear = false)
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{
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Vector2 viewportScale = new Vector2(source.rtHandleProperties.rtHandleScale.x, source.rtHandleProperties.rtHandleScale.y);
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// Will set the correct camera viewport as well.
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CoreUtils.SetRenderTarget(cmd, destination);
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BlitTexture(cmd, source, viewportScale, mipLevel, bilinear);
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}
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/// <summary>
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/// Blit a RThandle Texture2D RTHandle to another RTHandle.
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/// This will properly account for partial usage (in term of resolution) of the texture for the current viewport.
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="destination">Destination RTHandle.</param>
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/// <param name="mipLevel">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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public static void BlitCameraTexture2D(CommandBuffer cmd, RTHandle source, RTHandle destination, float mipLevel = 0.0f, bool bilinear = false)
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{
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Vector2 viewportScale = new Vector2(source.rtHandleProperties.rtHandleScale.x, source.rtHandleProperties.rtHandleScale.y);
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// Will set the correct camera viewport as well.
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CoreUtils.SetRenderTarget(cmd, destination);
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BlitTexture2D(cmd, source, viewportScale, mipLevel, bilinear);
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}
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/// <summary>
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/// Blit a RTHandle to another RTHandle.
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/// This will properly account for partial usage (in term of resolution) of the texture for the current viewport.
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/// This overloads allows the user to override the default blit shader
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="destination">Destination RTHandle.</param>
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/// <param name="material">The material to use when blitting</param>
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/// <param name="pass">pass to use of the provided material</param>
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public static void BlitCameraTexture(CommandBuffer cmd, RTHandle source, RTHandle destination, Material material, int pass)
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{
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Vector2 viewportScale = new Vector2(source.rtHandleProperties.rtHandleScale.x, source.rtHandleProperties.rtHandleScale.y);
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// Will set the correct camera viewport as well.
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CoreUtils.SetRenderTarget(cmd, destination);
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BlitTexture(cmd, source, viewportScale, material, pass);
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}
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/// <summary>
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/// Blit a RTHandle to another RTHandle.
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/// This will properly account for partial usage (in term of resolution) of the texture for the current viewport.
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/// This overload allows user to override the scale and bias used when sampling the input RTHandle.
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="destination">Destination RTHandle.</param>
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/// <param name="scaleBias">Scale and bias used to sample the input RTHandle.</param>
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/// <param name="mipLevel">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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public static void BlitCameraTexture(CommandBuffer cmd, RTHandle source, RTHandle destination, Vector4 scaleBias, float mipLevel = 0.0f, bool bilinear = false)
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{
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// Will set the correct camera viewport as well.
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CoreUtils.SetRenderTarget(cmd, destination);
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BlitTexture(cmd, source, scaleBias, mipLevel, bilinear);
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}
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/// <summary>
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/// Blit a RTHandle to another RTHandle.
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/// This will properly account for partial usage (in term of resolution) of the texture for the current viewport.
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/// This overload allows user to override the viewport of the destination RTHandle.
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/// </summary>
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/// <param name="cmd">Command Buffer used for rendering.</param>
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/// <param name="source">Source RTHandle.</param>
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/// <param name="destination">Destination RTHandle.</param>
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/// <param name="destViewport">Viewport of the destination RTHandle.</param>
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/// <param name="mipLevel">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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public static void BlitCameraTexture(CommandBuffer cmd, RTHandle source, RTHandle destination, Rect destViewport, float mipLevel = 0.0f, bool bilinear = false)
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{
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Vector2 viewportScale = new Vector2(source.rtHandleProperties.rtHandleScale.x, source.rtHandleProperties.rtHandleScale.y);
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CoreUtils.SetRenderTarget(cmd, destination);
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cmd.SetViewport(destViewport);
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BlitTexture(cmd, source, viewportScale, mipLevel, bilinear);
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}
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/// <summary>
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/// Blit a texture using a quad in the current render target.
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/// </summary>
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/// <param name="cmd">Command buffer used for rendering.</param>
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/// <param name="source">Source texture.</param>
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/// <param name="scaleBiasTex">Scale and bias for the input texture.</param>
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/// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
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/// <param name="mipLevelTex">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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public static void BlitQuad(CommandBuffer cmd, Texture source, Vector4 scaleBiasTex, Vector4 scaleBiasRT, int mipLevelTex, bool bilinear)
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{
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s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, source);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBiasTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
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DrawQuad(cmd, GetBlitMaterial(source.dimension), bilinear ? 3 : 2);
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}
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/// <summary>
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/// Blit a texture using a quad in the current render target.
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/// </summary>
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/// <param name="cmd">Command buffer used for rendering.</param>
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/// <param name="source">Source texture.</param>
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/// <param name="textureSize">Source texture size.</param>
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/// <param name="scaleBiasTex">Scale and bias for sampling the input texture.</param>
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/// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
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/// <param name="mipLevelTex">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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/// <param name="paddingInPixels">Padding in pixels.</param>
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public static void BlitQuadWithPadding(CommandBuffer cmd, Texture source, Vector2 textureSize, Vector4 scaleBiasTex, Vector4 scaleBiasRT, int mipLevelTex, bool bilinear, int paddingInPixels)
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{
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s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, source);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBiasTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitTextureSize, textureSize);
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s_PropertyBlock.SetInt(BlitShaderIDs._BlitPaddingSize, paddingInPixels);
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if (source.wrapMode == TextureWrapMode.Repeat)
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DrawQuad(cmd, GetBlitMaterial(source.dimension), bilinear ? 7 : 6);
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else
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DrawQuad(cmd, GetBlitMaterial(source.dimension), bilinear ? 5 : 4);
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}
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/// <summary>
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/// Blit a texture using a quad in the current render target, by performing an alpha blend with the existing content on the render target.
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/// </summary>
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/// <param name="cmd">Command buffer used for rendering.</param>
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/// <param name="source">Source texture.</param>
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/// <param name="textureSize">Source texture size.</param>
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/// <param name="scaleBiasTex">Scale and bias for sampling the input texture.</param>
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/// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
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/// <param name="mipLevelTex">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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/// <param name="paddingInPixels">Padding in pixels.</param>
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public static void BlitQuadWithPaddingMultiply(CommandBuffer cmd, Texture source, Vector2 textureSize, Vector4 scaleBiasTex, Vector4 scaleBiasRT, int mipLevelTex, bool bilinear, int paddingInPixels)
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{
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s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, source);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBiasTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitTextureSize, textureSize);
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s_PropertyBlock.SetInt(BlitShaderIDs._BlitPaddingSize, paddingInPixels);
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if (source.wrapMode == TextureWrapMode.Repeat)
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DrawQuad(cmd, GetBlitMaterial(source.dimension), bilinear ? 12 : 11);
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else
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DrawQuad(cmd, GetBlitMaterial(source.dimension), bilinear ? 10 : 9);
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}
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/// <summary>
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/// Blit a texture (which is a Octahedral projection) using a quad in the current render target.
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/// </summary>
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/// <param name="cmd">Command buffer used for rendering.</param>
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/// <param name="source">Source texture.</param>
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/// <param name="textureSize">Source texture size.</param>
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/// <param name="scaleBiasTex">Scale and bias for sampling the input texture.</param>
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/// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
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/// <param name="mipLevelTex">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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/// <param name="paddingInPixels">Padding in pixels.</param>
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public static void BlitOctahedralWithPadding(CommandBuffer cmd, Texture source, Vector2 textureSize, Vector4 scaleBiasTex, Vector4 scaleBiasRT, int mipLevelTex, bool bilinear, int paddingInPixels)
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{
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s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, source);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBiasTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitTextureSize, textureSize);
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s_PropertyBlock.SetInt(BlitShaderIDs._BlitPaddingSize, paddingInPixels);
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DrawQuad(cmd, GetBlitMaterial(source.dimension), 8);
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}
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/// <summary>
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/// Blit a texture (which is a Octahedral projection) using a quad in the current render target, by performing an alpha blend with the existing content on the render target.
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/// </summary>
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/// <param name="cmd">Command buffer used for rendering.</param>
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/// <param name="source">Source texture.</param>
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/// <param name="textureSize">Source texture size.</param>
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/// <param name="scaleBiasTex">Scale and bias for sampling the input texture.</param>
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/// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
|
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/// <param name="mipLevelTex">Mip level to blit.</param>
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/// <param name="bilinear">Enable bilinear filtering.</param>
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/// <param name="paddingInPixels">Padding in pixels.</param>
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public static void BlitOctahedralWithPaddingMultiply(CommandBuffer cmd, Texture source, Vector2 textureSize, Vector4 scaleBiasTex, Vector4 scaleBiasRT, int mipLevelTex, bool bilinear, int paddingInPixels)
|
|
{
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|
s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, source);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBiasTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
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s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
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s_PropertyBlock.SetVector(BlitShaderIDs._BlitTextureSize, textureSize);
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s_PropertyBlock.SetInt(BlitShaderIDs._BlitPaddingSize, paddingInPixels);
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DrawQuad(cmd, GetBlitMaterial(source.dimension), 13);
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|
}
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|
|
|
/// <summary>
|
|
/// Blit a cube texture into 2d texture as octahedral quad. (projection)
|
|
/// </summary>
|
|
/// <param name="cmd">Command buffer used for rendering.</param>
|
|
/// <param name="source">Source cube texture.</param>
|
|
/// <param name="mipLevelTex">Mip level to sample.</param>
|
|
/// /// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
|
|
public static void BlitCubeToOctahedral2DQuad(CommandBuffer cmd, Texture source, Vector4 scaleBiasRT, int mipLevelTex)
|
|
{
|
|
s_PropertyBlock.SetTexture(BlitShaderIDs._BlitCubeTexture, source);
|
|
s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
|
|
s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, new Vector4(1, 1, 0, 0));
|
|
s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
|
|
DrawQuad(cmd, GetBlitMaterial(source.dimension), 14);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Blit a cube texture into 2d texture as octahedral quad. (projection)
|
|
/// Conversion between single and multi channel formats.
|
|
/// RGB(A) to YYYY (luminance).
|
|
/// R to RRRR.
|
|
/// A to AAAA.
|
|
/// </summary>
|
|
/// <param name="cmd">Command buffer used for rendering.</param>
|
|
/// <param name="source">Source texture.</param>
|
|
/// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
|
|
/// <param name="mipLevelTex">Mip level to blit.</param>
|
|
public static void BlitCubeToOctahedral2DQuadSingleChannel(CommandBuffer cmd, Texture source, Vector4 scaleBiasRT, int mipLevelTex)
|
|
{
|
|
int pass = 15;
|
|
uint sourceChnCount = GraphicsFormatUtility.GetComponentCount(source.graphicsFormat);
|
|
if (sourceChnCount == 1)
|
|
{
|
|
if (GraphicsFormatUtility.IsAlphaOnlyFormat(source.graphicsFormat))
|
|
pass = 16;
|
|
if (GraphicsFormatUtility.GetSwizzleR(source.graphicsFormat) == FormatSwizzle.FormatSwizzleR)
|
|
pass = 17;
|
|
}
|
|
|
|
s_PropertyBlock.SetTexture(BlitShaderIDs._BlitCubeTexture, source);
|
|
s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
|
|
s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, new Vector4(1, 1, 0, 0));
|
|
s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
|
|
DrawQuad(cmd, GetBlitMaterial(source.dimension), pass);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Bilinear Blit a texture using a quad in the current render target.
|
|
/// Conversion between single and multi channel formats.
|
|
/// RGB(A) to YYYY (luminance).
|
|
/// R to RRRR.
|
|
/// A to AAAA.
|
|
/// </summary>
|
|
/// <param name="cmd">Command buffer used for rendering.</param>
|
|
/// <param name="source">Source texture.</param>
|
|
/// <param name="scaleBiasTex">Scale and bias for the input texture.</param>
|
|
/// <param name="scaleBiasRT">Scale and bias for the output texture.</param>
|
|
/// <param name="mipLevelTex">Mip level to blit.</param>
|
|
public static void BlitQuadSingleChannel(CommandBuffer cmd, Texture source, Vector4 scaleBiasTex, Vector4 scaleBiasRT, int mipLevelTex)
|
|
{
|
|
int pass = 18;
|
|
uint sourceChnCount = GraphicsFormatUtility.GetComponentCount(source.graphicsFormat);
|
|
if (sourceChnCount == 1)
|
|
{
|
|
if (GraphicsFormatUtility.IsAlphaOnlyFormat(source.graphicsFormat))
|
|
pass = 19;
|
|
if (GraphicsFormatUtility.GetSwizzleR(source.graphicsFormat) == FormatSwizzle.FormatSwizzleR)
|
|
pass = 20;
|
|
}
|
|
|
|
s_PropertyBlock.SetTexture(BlitShaderIDs._BlitTexture, source);
|
|
s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBias, scaleBiasTex);
|
|
s_PropertyBlock.SetVector(BlitShaderIDs._BlitScaleBiasRt, scaleBiasRT);
|
|
s_PropertyBlock.SetFloat(BlitShaderIDs._BlitMipLevel, mipLevelTex);
|
|
|
|
DrawQuad(cmd, GetBlitMaterial(source.dimension), pass);
|
|
}
|
|
}
|
|
}
|