mirror of
https://github.com/GreemDev/Ryujinx.git
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127 lines
4 KiB
C#
127 lines
4 KiB
C#
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using ChocolArm64.Memory;
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using Ryujinx.Graphics.Gal;
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using System;
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namespace Ryujinx.Graphics.Gpu
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{
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static class TextureReader
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{
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public static byte[] Read(AMemory Memory, Texture Texture)
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{
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switch (Texture.Format)
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{
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case GalTextureFormat.A8B8G8R8: return Read4Bpp (Memory, Texture);
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case GalTextureFormat.BC1: return Read8Bpt4x4 (Memory, Texture);
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case GalTextureFormat.BC2: return Read16Bpt4x4(Memory, Texture);
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case GalTextureFormat.BC3: return Read16Bpt4x4(Memory, Texture);
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}
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throw new NotImplementedException(Texture.Format.ToString());
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}
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private unsafe static byte[] Read4Bpp(AMemory Memory, Texture Texture)
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{
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int Width = Texture.Width;
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int Height = Texture.Height;
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byte[] Output = new byte[Width * Height * 4];
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ISwizzle Swizzle = GetSwizzle(Texture.Swizzle, Width, 4, Texture.BlockHeight);
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fixed (byte* BuffPtr = Output)
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{
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long OutOffs = 0;
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for (int Y = 0; Y < Height; Y++)
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for (int X = 0; X < Width; X++)
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{
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long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
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int Pixel = Memory.ReadInt32Unchecked(Texture.Position + Offset);
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*(int*)(BuffPtr + OutOffs) = Pixel;
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OutOffs += 4;
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}
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}
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return Output;
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}
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private unsafe static byte[] Read8Bpt4x4(AMemory Memory, Texture Texture)
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{
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int Width = (Texture.Width + 3) / 4;
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int Height = (Texture.Height + 3) / 4;
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byte[] Output = new byte[Width * Height * 8];
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ISwizzle Swizzle = GetSwizzle(Texture.Swizzle, Width, 8, Texture.BlockHeight);
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fixed (byte* BuffPtr = Output)
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{
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long OutOffs = 0;
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for (int Y = 0; Y < Height; Y++)
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for (int X = 0; X < Width; X++)
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{
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long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
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long Tile = Memory.ReadInt64Unchecked(Texture.Position + Offset);
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*(long*)(BuffPtr + OutOffs) = Tile;
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OutOffs += 8;
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}
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}
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return Output;
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}
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private unsafe static byte[] Read16Bpt4x4(AMemory Memory, Texture Texture)
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{
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int Width = (Texture.Width + 3) / 4;
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int Height = (Texture.Height + 3) / 4;
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byte[] Output = new byte[Width * Height * 16];
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ISwizzle Swizzle = GetSwizzle(Texture.Swizzle, Width, 16, Texture.BlockHeight);
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fixed (byte* BuffPtr = Output)
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{
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long OutOffs = 0;
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for (int Y = 0; Y < Height; Y++)
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for (int X = 0; X < Width; X++)
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{
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long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
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long Tile0 = Memory.ReadInt64Unchecked(Texture.Position + Offset + 0);
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long Tile1 = Memory.ReadInt64Unchecked(Texture.Position + Offset + 8);
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*(long*)(BuffPtr + OutOffs + 0) = Tile0;
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*(long*)(BuffPtr + OutOffs + 8) = Tile1;
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OutOffs += 16;
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}
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}
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return Output;
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}
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private static ISwizzle GetSwizzle(TextureSwizzle Swizzle, int Width, int Bpp, int BlockHeight)
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{
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switch (Swizzle)
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{
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case TextureSwizzle.Pitch:
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case TextureSwizzle.PitchColorKey:
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return new LinearSwizzle(Width, Bpp);
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case TextureSwizzle.BlockLinear:
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case TextureSwizzle.BlockLinearColorKey:
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return new BlockLinearSwizzle(Width, Bpp, BlockHeight);
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}
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throw new NotImplementedException(Swizzle.ToString());
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}
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}
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}
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