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74 行
3.0 KiB
74 行
3.0 KiB
namespace UnityEngine.Rendering.Universal
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{
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public static class PostProcessUtils
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{
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public static int ConfigureDithering(PostProcessData data, int index, Camera camera, Material material)
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{
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var blueNoise = data.textures.blueNoise16LTex;
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if (blueNoise == null || blueNoise.Length == 0)
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return 0; // Safe guard
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#if LWRP_DEBUG_STATIC_POSTFX // Used by QA for automated testing
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index = 0;
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float rndOffsetX = 0f;
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float rndOffsetY = 0f;
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#else
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if (++index >= blueNoise.Length)
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index = 0;
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float rndOffsetX = Random.value;
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float rndOffsetY = Random.value;
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#endif
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// Ideally we would be sending a texture array once and an index to the slice to use
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// on every frame but these aren't supported on all Universal targets
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var noiseTex = blueNoise[index];
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material.SetTexture(ShaderConstants._BlueNoise_Texture, noiseTex);
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material.SetVector(ShaderConstants._Dithering_Params, new Vector4(
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camera.pixelWidth / (float)noiseTex.width,
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camera.pixelHeight / (float)noiseTex.height,
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rndOffsetX,
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rndOffsetY
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));
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return index;
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}
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public static void ConfigureFilmGrain(PostProcessData data, FilmGrain settings, Camera camera, Material material)
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{
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var texture = settings.texture.value;
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if (settings.type.value != FilmGrainLookup.Custom)
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texture = data.textures.filmGrainTex[(int)settings.type.value];
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#if LWRP_DEBUG_STATIC_POSTFX
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float offsetX = 0f;
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float offsetY = 0f;
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#else
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float offsetX = Random.value;
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float offsetY = Random.value;
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#endif
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var tilingParams = texture == null
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? Vector4.zero
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: new Vector4(camera.pixelWidth / (float)texture.width, camera.pixelHeight / (float)texture.height, offsetX, offsetY);
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material.SetTexture(ShaderConstants._Grain_Texture, texture);
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material.SetVector(ShaderConstants._Grain_Params, new Vector2(settings.intensity.value * 4f, settings.response.value));
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material.SetVector(ShaderConstants._Grain_TilingParams, tilingParams);
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}
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// Precomputed shader ids to same some CPU cycles (mostly affects mobile)
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static class ShaderConstants
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{
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public static readonly int _Grain_Texture = Shader.PropertyToID("_Grain_Texture");
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public static readonly int _Grain_Params = Shader.PropertyToID("_Grain_Params");
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public static readonly int _Grain_TilingParams = Shader.PropertyToID("_Grain_TilingParams");
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public static readonly int _BlueNoise_Texture = Shader.PropertyToID("_BlueNoise_Texture");
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public static readonly int _Dithering_Params = Shader.PropertyToID("_Dithering_Params");
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}
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}
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}
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