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using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Gpu.Engine;
using Ryujinx.Graphics.Gpu.Image;
using Ryujinx.Graphics.Shader;
using System;
using System.Linq;
namespace Ryujinx.Graphics.Gpu.Shader
{
/// <summary>
/// A collection of shader bindings ready for insertion into the buffer and texture managers.
/// </summary>
internal class CachedShaderBindings
{
public TextureBindingInfo[][] TextureBindings { get; }
public TextureBindingInfo[][] ImageBindings { get; }
public BufferDescriptor[][] ConstantBufferBindings { get; }
public BufferDescriptor[][] StorageBufferBindings { get; }
public int[] TextureCounts { get; }
public int MaxTextureBinding { get; }
public int MaxImageBinding { get; }
/// <summary>
/// Create a new cached shader bindings collection.
/// </summary>
/// <param name="isCompute">Whether the shader is for compute</param>
/// <param name="stages">The stages used by the shader</param>
public CachedShaderBindings(bool isCompute, CachedShaderStage[] stages)
{
int stageCount = isCompute ? 1 : Constants.ShaderStages;
TextureBindings = new TextureBindingInfo[stageCount][];
ImageBindings = new TextureBindingInfo[stageCount][];
ConstantBufferBindings = new BufferDescriptor[stageCount][];
StorageBufferBindings = new BufferDescriptor[stageCount][];
TextureCounts = new int[stageCount];
int maxTextureBinding = -1;
int maxImageBinding = -1;
int offset = isCompute ? 0 : 1;
for (int i = 0; i < stageCount; i++)
{
CachedShaderStage stage = stages[i + offset];
if (stage == null)
{
TextureBindings[i] = Array.Empty<TextureBindingInfo>();
ImageBindings[i] = Array.Empty<TextureBindingInfo>();
ConstantBufferBindings[i] = Array.Empty<BufferDescriptor>();
StorageBufferBindings[i] = Array.Empty<BufferDescriptor>();
continue;
}
TextureBindings[i] = stage.Info.Textures.Select(descriptor =>
{
Target target = descriptor.Type != SamplerType.None ? ShaderTexture.GetTarget(descriptor.Type) : default;
var result = new TextureBindingInfo(
target,
descriptor.Binding,
descriptor.ArrayLength,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags,
descriptor.Type == SamplerType.None);
if (descriptor.ArrayLength <= 1)
{
if (descriptor.Binding > maxTextureBinding)
{
maxTextureBinding = descriptor.Binding;
}
TextureCounts[i]++;
}
return result;
}).ToArray();
ImageBindings[i] = stage.Info.Images.Select(descriptor =>
{
Target target = ShaderTexture.GetTarget(descriptor.Type);
Format format = ShaderTexture.GetFormat(descriptor.Format);
var result = new TextureBindingInfo(
target,
format,
descriptor.Binding,
descriptor.ArrayLength,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
if (descriptor.ArrayLength <= 1 && descriptor.Binding > maxImageBinding)
{
maxImageBinding = descriptor.Binding;
}
return result;
}).ToArray();
ConstantBufferBindings[i] = stage.Info.CBuffers.ToArray();
StorageBufferBindings[i] = stage.Info.SBuffers.ToArray();
}
MaxTextureBinding = maxTextureBinding;
MaxImageBinding = maxImageBinding;
}
}
}
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