JinxRyu/Ryujinx.HLE/Gpu/Texture/TextureReader.cs

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using ChocolArm64.Memory;
using Ryujinx.Graphics.Gal;
using System;
namespace Ryujinx.HLE.Gpu.Texture
{
static class TextureReader
{
public static byte[] Read(IAMemory Memory, TextureInfo Texture)
{
switch (Texture.Format)
{
case GalTextureFormat.R32G32B32A32: return Read16Bpp (Memory, Texture);
case GalTextureFormat.R16G16B16A16: return Read8Bpp (Memory, Texture);
case GalTextureFormat.A8B8G8R8: return Read4Bpp (Memory, Texture);
case GalTextureFormat.R32: return Read4Bpp (Memory, Texture);
case GalTextureFormat.A1B5G5R5: return Read5551 (Memory, Texture);
case GalTextureFormat.B5G6R5: return Read565 (Memory, Texture);
case GalTextureFormat.G8R8: return Read2Bpp (Memory, Texture);
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case GalTextureFormat.R16: return Read2Bpp (Memory, Texture);
case GalTextureFormat.R8: return Read1Bpp (Memory, Texture);
case GalTextureFormat.BC7U: return Read16Bpt4x4(Memory, Texture);
case GalTextureFormat.BC1: return Read8Bpt4x4 (Memory, Texture);
case GalTextureFormat.BC2: return Read16Bpt4x4(Memory, Texture);
case GalTextureFormat.BC3: return Read16Bpt4x4(Memory, Texture);
case GalTextureFormat.BC4: return Read8Bpt4x4 (Memory, Texture);
case GalTextureFormat.BC5: return Read16Bpt4x4(Memory, Texture);
case GalTextureFormat.Astc2D4x4: return Read16Bpt4x4(Memory, Texture);
}
throw new NotImplementedException(Texture.Format.ToString());
}
private unsafe static byte[] Read1Bpp(IAMemory Memory, TextureInfo Texture)
{
int Width = Texture.Width;
int Height = Texture.Height;
byte[] Output = new byte[Width * Height];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 1);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
byte Pixel = CpuMem.ReadByteUnchecked(Position + Offset);
*(BuffPtr + OutOffs) = Pixel;
OutOffs++;
}
}
return Output;
}
private unsafe static byte[] Read5551(IAMemory Memory, TextureInfo Texture)
{
int Width = Texture.Width;
int Height = Texture.Height;
byte[] Output = new byte[Width * Height * 2];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 2);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
uint Pixel = (uint)CpuMem.ReadInt16Unchecked(Position + Offset);
Pixel = (Pixel & 0x001f) << 11 |
(Pixel & 0x03e0) << 1 |
(Pixel & 0x7c00) >> 9 |
(Pixel & 0x8000) >> 15;
*(short*)(BuffPtr + OutOffs) = (short)Pixel;
OutOffs += 2;
}
}
return Output;
}
private unsafe static byte[] Read565(IAMemory Memory, TextureInfo Texture)
{
int Width = Texture.Width;
int Height = Texture.Height;
byte[] Output = new byte[Width * Height * 2];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 2);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
uint Pixel = (uint)CpuMem.ReadInt16Unchecked(Position + Offset);
Pixel = (Pixel & 0x001f) << 11 |
(Pixel & 0x07e0) |
(Pixel & 0xf800) >> 11;
*(short*)(BuffPtr + OutOffs) = (short)Pixel;
OutOffs += 2;
}
}
return Output;
}
private unsafe static byte[] Read2Bpp(IAMemory Memory, TextureInfo Texture)
{
int Width = Texture.Width;
int Height = Texture.Height;
byte[] Output = new byte[Width * Height * 2];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 2);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
short Pixel = CpuMem.ReadInt16Unchecked(Position + Offset);
*(short*)(BuffPtr + OutOffs) = Pixel;
OutOffs += 2;
}
}
return Output;
}
private unsafe static byte[] Read4Bpp(IAMemory Memory, TextureInfo Texture)
{
int Width = Texture.Width;
int Height = Texture.Height;
byte[] Output = new byte[Width * Height * 4];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 4);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
int Pixel = CpuMem.ReadInt32Unchecked(Position + Offset);
*(int*)(BuffPtr + OutOffs) = Pixel;
OutOffs += 4;
}
}
return Output;
}
private unsafe static byte[] Read8Bpp(IAMemory Memory, TextureInfo Texture)
{
int Width = Texture.Width;
int Height = Texture.Height;
byte[] Output = new byte[Width * Height * 8];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 8);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
long Pixel = CpuMem.ReadInt64Unchecked(Position + Offset);
*(long*)(BuffPtr + OutOffs) = Pixel;
OutOffs += 8;
}
}
return Output;
}
private unsafe static byte[] Read16Bpp(IAMemory Memory, TextureInfo Texture)
{
int Width = Texture.Width;
int Height = Texture.Height;
byte[] Output = new byte[Width * Height * 16];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 16);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
long PxLow = CpuMem.ReadInt64Unchecked(Position + Offset + 0);
long PxHigh = CpuMem.ReadInt64Unchecked(Position + Offset + 8);
*(long*)(BuffPtr + OutOffs + 0) = PxLow;
*(long*)(BuffPtr + OutOffs + 8) = PxHigh;
OutOffs += 16;
}
}
return Output;
}
private unsafe static byte[] Read8Bpt4x4(IAMemory Memory, TextureInfo Texture)
{
int Width = (Texture.Width + 3) / 4;
int Height = (Texture.Height + 3) / 4;
byte[] Output = new byte[Width * Height * 8];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 8);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
long Tile = CpuMem.ReadInt64Unchecked(Position + Offset);
*(long*)(BuffPtr + OutOffs) = Tile;
OutOffs += 8;
}
}
return Output;
}
private unsafe static byte[] Read16Bpt4x4(IAMemory Memory, TextureInfo Texture)
{
int Width = (Texture.Width + 3) / 4;
int Height = (Texture.Height + 3) / 4;
byte[] Output = new byte[Width * Height * 16];
ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 16);
(AMemory CpuMem, long Position) = TextureHelper.GetMemoryAndPosition(
Memory,
Texture.Position);
fixed (byte* BuffPtr = Output)
{
long OutOffs = 0;
for (int Y = 0; Y < Height; Y++)
for (int X = 0; X < Width; X++)
{
long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
long Tile0 = CpuMem.ReadInt64Unchecked(Position + Offset + 0);
long Tile1 = CpuMem.ReadInt64Unchecked(Position + Offset + 8);
*(long*)(BuffPtr + OutOffs + 0) = Tile0;
*(long*)(BuffPtr + OutOffs + 8) = Tile1;
OutOffs += 16;
}
}
return Output;
}
}
}