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using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Shader;
using System;
namespace Ryujinx.Graphics.Gpu.Image
{
class TextureBindingsManager
{
private GpuContext _context;
private bool _isCompute;
private SamplerPool _samplerPool;
private ulong _texturePoolAddress;
private int _texturePoolMaximumId;
private TexturePoolCache _texturePoolCache;
private TextureBindingInfo[][] _textureBindings;
private TextureBindingInfo[][] _imageBindings;
private struct TextureStatePerStage
{
public ITexture Texture;
public ISampler Sampler;
}
private TextureStatePerStage[][] _textureState;
private TextureStatePerStage[][] _imageState;
private int _textureBufferIndex;
private bool _rebind;
public TextureBindingsManager(GpuContext context, bool isCompute)
{
_context = context;
_isCompute = isCompute;
_texturePoolCache = new TexturePoolCache(context);
int stages = isCompute ? 1 : Constants.TotalShaderStages;
_textureBindings = new TextureBindingInfo[stages][];
_imageBindings = new TextureBindingInfo[stages][];
_textureState = new TextureStatePerStage[stages][];
_imageState = new TextureStatePerStage[stages][];
}
public void SetTextures(int stage, TextureBindingInfo[] bindings)
{
_textureBindings[stage] = bindings;
_textureState[stage] = new TextureStatePerStage[bindings.Length];
}
public void SetImages(int stage, TextureBindingInfo[] bindings)
{
_imageBindings[stage] = bindings;
_imageState[stage] = new TextureStatePerStage[bindings.Length];
}
public void SetTextureBufferIndex(int index)
{
_textureBufferIndex = index;
}
public void SetSamplerPool(ulong gpuVa, int maximumId)
{
ulong address = _context.MemoryManager.Translate(gpuVa);
if (_samplerPool != null)
{
if (_samplerPool.Address == address)
{
return;
}
_samplerPool.Dispose();
}
_samplerPool = new SamplerPool(_context, address, maximumId);
}
public void SetTexturePool(ulong gpuVa, int maximumId)
{
ulong address = _context.MemoryManager.Translate(gpuVa);
_texturePoolAddress = address;
_texturePoolMaximumId = maximumId;
}
public void CommitBindings()
{
TexturePool texturePool = _texturePoolCache.FindOrCreate(
_texturePoolAddress,
_texturePoolMaximumId);
if (_isCompute)
{
CommitTextureBindings(texturePool, ShaderStage.Compute, 0);
CommitImageBindings (texturePool, ShaderStage.Compute, 0);
}
else
{
for (ShaderStage stage = ShaderStage.Vertex; stage <= ShaderStage.Fragment; stage++)
{
int stageIndex = (int)stage - 1;
CommitTextureBindings(texturePool, stage, stageIndex);
CommitImageBindings (texturePool, stage, stageIndex);
}
}
_rebind = false;
}
private void CommitTextureBindings(TexturePool pool, ShaderStage stage, int stageIndex)
{
if (_textureBindings[stageIndex] == null)
{
return;
}
for (int index = 0; index < _textureBindings[stageIndex].Length; index++)
{
TextureBindingInfo binding = _textureBindings[stageIndex][index];
int packedId = ReadPackedId(stageIndex, binding.Handle);
int textureId = UnpackTextureId(packedId);
int samplerId = UnpackSamplerId(packedId);
Texture texture = pool.Get(textureId);
ITexture hostTexture = texture?.GetTargetTexture(binding.Target);
if (_textureState[stageIndex][index].Texture != hostTexture || _rebind)
{
_textureState[stageIndex][index].Texture = hostTexture;
_context.Renderer.Pipeline.BindTexture(index, stage, hostTexture);
}
Sampler sampler = _samplerPool.Get(samplerId);
ISampler hostSampler = sampler?.HostSampler;
if (_textureState[stageIndex][index].Sampler != hostSampler || _rebind)
{
_textureState[stageIndex][index].Sampler = hostSampler;
_context.Renderer.Pipeline.BindSampler(index, stage, hostSampler);
}
}
}
private void CommitImageBindings(TexturePool pool, ShaderStage stage, int stageIndex)
{
if (_imageBindings[stageIndex] == null)
{
return;
}
for (int index = 0; index < _imageBindings[stageIndex].Length; index++)
{
TextureBindingInfo binding = _imageBindings[stageIndex][index];
int packedId = ReadPackedId(stageIndex, binding.Handle);
int textureId = UnpackTextureId(packedId);
Texture texture = pool.Get(textureId);
ITexture hostTexture = texture?.GetTargetTexture(binding.Target);
if (_imageState[stageIndex][index].Texture != hostTexture || _rebind)
{
_imageState[stageIndex][index].Texture = hostTexture;
_context.Renderer.Pipeline.BindImage(index, stage, hostTexture);
}
}
}
private int ReadPackedId(int stage, int wordOffset)
{
ulong address;
var bufferManager = _context.Methods.BufferManager;
if (_isCompute)
{
address = bufferManager.GetComputeUniformBufferAddress(_textureBufferIndex);
}
else
{
address = bufferManager.GetGraphicsUniformBufferAddress(stage, _textureBufferIndex);
}
address += (uint)wordOffset * 4;
return BitConverter.ToInt32(_context.PhysicalMemory.Read(address, 4));
}
private static int UnpackTextureId(int packedId)
{
return (packedId >> 0) & 0xfffff;
}
private static int UnpackSamplerId(int packedId)
{
return (packedId >> 20) & 0xfff;
}
public void InvalidatePoolRange(ulong address, ulong size)
{
_samplerPool?.InvalidateRange(address, size);
_texturePoolCache.InvalidateRange(address, size);
}
public void Rebind()
{
_rebind = true;
}
}
}
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