/// <summary>
/// Updates host shaders based on the guest GPU state.
/// </summary>
/// <param name="state">Current GPU state</param>
private void UpdateShaderState(GpuState state)
{
ShaderAddresses addresses = new ShaderAddresses();
Span <ShaderAddresses> addressesSpan = MemoryMarshal.CreateSpan(ref addresses, 1);
Span <ulong> addressesArray = MemoryMarshal.Cast <ShaderAddresses, ulong>(addressesSpan);
ulong baseAddress = state.Get <GpuVa>(MethodOffset.ShaderBaseAddress).Pack();
for (int index = 0; index < 6; index++)
{
var shader = state.Get <ShaderState>(MethodOffset.ShaderState, index);
if (!shader.UnpackEnable() && index != 1)
{
continue;
}
addressesArray[index] = baseAddress + shader.Offset;
}
ShaderBundle gs = ShaderCache.GetGraphicsShader(state, addresses);
_vsUsesInstanceId = gs.Shaders[0]?.Info.UsesInstanceId ?? false;
int storageBufferBindingsCount = 0;
int uniformBufferBindingsCount = 0;
for (int stage = 0; stage < Constants.ShaderStages; stage++)
{
ShaderProgramInfo info = gs.Shaders[stage]?.Info;
_currentProgramInfo[stage] = info;
if (info == null)
{
TextureManager.SetGraphicsTextures(stage, Array.Empty <TextureBindingInfo>());
TextureManager.SetGraphicsImages(stage, Array.Empty <TextureBindingInfo>());
BufferManager.SetGraphicsStorageBufferBindings(stage, null);
BufferManager.SetGraphicsUniformBufferBindings(stage, null);
continue;
}
var textureBindings = new TextureBindingInfo[info.Textures.Count];
for (int index = 0; index < info.Textures.Count; index++)
{
var descriptor = info.Textures[index];
Target target = ShaderTexture.GetTarget(descriptor.Type);
textureBindings[index] = new TextureBindingInfo(
target,
descriptor.Binding,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
}
TextureManager.SetGraphicsTextures(stage, textureBindings);
var imageBindings = new TextureBindingInfo[info.Images.Count];
for (int index = 0; index < info.Images.Count; index++)
{
var descriptor = info.Images[index];
Target target = ShaderTexture.GetTarget(descriptor.Type);
Format format = ShaderTexture.GetFormat(descriptor.Format);
imageBindings[index] = new TextureBindingInfo(
target,
format,
descriptor.Binding,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
}
TextureManager.SetGraphicsImages(stage, imageBindings);
BufferManager.SetGraphicsStorageBufferBindings(stage, info.SBuffers);
BufferManager.SetGraphicsUniformBufferBindings(stage, info.CBuffers);
if (info.SBuffers.Count != 0)
{
storageBufferBindingsCount = Math.Max(storageBufferBindingsCount, info.SBuffers.Max(x => x.Binding) + 1);
}
if (info.CBuffers.Count != 0)
{
uniformBufferBindingsCount = Math.Max(uniformBufferBindingsCount, info.CBuffers.Max(x => x.Binding) + 1);
}
}
BufferManager.SetGraphicsStorageBufferBindingsCount(storageBufferBindingsCount);
BufferManager.SetGraphicsUniformBufferBindingsCount(uniformBufferBindingsCount);
_context.Renderer.Pipeline.SetProgram(gs.HostProgram);
}