- The texture array structure in different from GLSL and Unity + HLSL, the sequence of image index i and j must be adjusted. Suppose the light field has structure 16 x 16:
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- In GLSL Shader:
1234567for (int i = 0; i < 16; i++) {for (int j = 0; j < 16; j++) {...tmpColor = texture(texSampler, vec3(pixel.xy,i * DIM + j));...}}-
- In Unity Shader:
1234567for (int i = 0; i < 16; i++) {for (int j = 0; j < 16; j++) {...tmpColor = UNITY_SAMPLE_TEX2DARRAY(_ArrTex, float3(pixel.xy, (15 - j) * DIM + i));...}} -
- The program of using texture array in unity
- Suppose we want to load the images in folder “lytro”, we must mkdir called “Resources” in the folder “Asset”, then drag the folder “lytro” into “Resources”.
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void CreateTex2DArray() { int TotalTexNum = texDim * texDim; mainTexture = new Texture2DArray(width, height, TotalTexNum, TextureFormat.RGB24, false); mainTexture.filterMode = FilterMode.Point; mainTexture.wrapMode = TextureWrapMode.Clamp; string badName = "invalid_texture"; Texture2D badTex = Resources.Load(badName) as Texture2D; if (badTex == null) { Debug.Log(badName + " not found."); } for (int i = 0; i < TotalTexNum; i++) { //string fileName = "test/test" + i.ToString(); int firstIdx = i % texDim; int secondIdx = i / texDim; string fileName = "lytro/out_" + firstIdx.ToString("D2") +"_"+ secondIdx.ToString("D2"); Texture2D smallTex = Resources.Load(fileName) as Texture2D; if (smallTex == null) { Debug.Log(fileName + " not found."); mainTexture.SetPixels(badTex.GetPixels(), i, 0); } else { mainTexture.SetPixels(smallTex.GetPixels(), i, 0); } } mainTexture.Apply(); } |