public virtual void ReadXml(XmlNode node, string ddsfolder)
{
Name = Xml.GetChildInnerText(node, "Name");
NameHash = JenkHash.GenHash(Name?.ToLowerInvariant());
Unknown_32h = (ushort)Xml.GetChildUIntAttribute(node, "Unk32", "value");
Usage = Xml.GetChildEnumInnerText <TextureUsage>(node, "Usage");
UsageFlags = Xml.GetChildEnumInnerText <TextureUsageFlags>(node, "UsageFlags");
ExtraFlags = Xml.GetChildUIntAttribute(node, "ExtraFlags", "value");
}
public TextureDescriptor(int binding, SamplerType type, TextureFormat format, int cbufSlot, int handleIndex)
{
Binding = binding;
Type = type;
Format = format;
CbufSlot = cbufSlot;
HandleIndex = handleIndex;
Flags = TextureUsageFlags.None;
}
/// <summary>
/// Updates the texture scale for a given texture or image.
/// </summary>
/// <param name="texture">Start GPU virtual address of the pool</param>
/// <param name="usageFlags">The related texture usage flags</param>
/// <param name="index">The texture/image binding index</param>
/// <param name="stage">The active shader stage</param>
/// <returns>True if the given texture has become blacklisted, indicating that its host texture may have changed.</returns>
private bool UpdateScale(Texture texture, TextureUsageFlags usageFlags, int index, ShaderStage stage)
{
float result = 1f;
bool changed = false;
if ((usageFlags & TextureUsageFlags.NeedsScaleValue) != 0 && texture != null)
{
if ((usageFlags & TextureUsageFlags.ResScaleUnsupported) != 0)
{
changed = texture.ScaleMode != TextureScaleMode.Blacklisted;
texture.BlacklistScale();
}
else
{
switch (stage)
{
case ShaderStage.Fragment:
float scale = texture.ScaleFactor;
if (scale != 1)
{
Texture activeTarget = _channel.TextureManager.GetAnyRenderTarget();
if (activeTarget != null && (activeTarget.Info.Width / (float)texture.Info.Width) == (activeTarget.Info.Height / (float)texture.Info.Height))
{
// If the texture's size is a multiple of the sampler size, enable interpolation using gl_FragCoord. (helps "invent" new integer values between scaled pixels)
result = -scale;
break;
}
}
result = scale;
break;
case ShaderStage.Vertex:
int fragmentIndex = (int)ShaderStage.Fragment - 1;
index += _textureBindingsCount[fragmentIndex] + _imageBindingsCount[fragmentIndex];
result = texture.ScaleFactor;
break;
case ShaderStage.Compute:
result = texture.ScaleFactor;
break;
}
}
}
if (result != _scales[index])
{
_scaleChanged = true;
_scales[index] = result;
}
return(changed);
}
/// <summary>
/// Constructs the texture binding information structure.
/// </summary>
/// <param name="target">The shader sampler target type</param>
/// <param name="format">Format of the image as declared on the shader</param>
/// <param name="binding">The shader texture binding point</param>
/// <param name="cbufSlot">Constant buffer slot where the texture handle is located</param>
/// <param name="handle">The shader texture handle (read index into the texture constant buffer)</param>
/// <param name="flags">The texture's usage flags, indicating how it is used in the shader</param>
public TextureBindingInfo(Target target, Format format, int binding, int cbufSlot, int handle, TextureUsageFlags flags)
{
Target = target;
Format = format;
Binding = binding;
CbufSlot = cbufSlot;
Handle = handle;
Flags = flags;
}
/// <summary>
/// Constructs the bindless texture binding information structure.
/// </summary>
/// <param name="target">The shader sampler target type</param>
/// <param name="cbufSlot">Constant buffer slot where the bindless texture handle is located</param>
/// <param name="cbufOffset">Constant buffer offset of the bindless texture handle</param>
/// <param name="flags">The texture's usage flags, indicating how it is used in the shader</param>
public TextureBindingInfo(Target target, int cbufSlot, int cbufOffset, TextureUsageFlags flags)
{
Target = target;
Handle = 0;
IsBindless = true;
CbufSlot = cbufSlot;
CbufOffset = cbufOffset;
Flags = flags;
}
/// <summary>
/// Constructs the texture binding information structure.
/// </summary>
/// <param name="target">The shader sampler target type</param>
/// <param name="handle">The shader texture handle (read index into the texture constant buffer)</param>
/// <param name="flags">The texture's usage flags, indicating how it is used in the shader</param>
public TextureBindingInfo(Target target, int handle, TextureUsageFlags flags)
{
Target = target;
Handle = handle;
IsBindless = false;
CbufSlot = 0;
CbufOffset = 0;
Flags = flags;
}
public TextureDescriptor(string name, SamplerType type, int cbufSlot, int cbufOffset)
{
Name = name;
Type = type;
HandleIndex = 0;
IsBindless = true;
CbufSlot = cbufSlot;
CbufOffset = cbufOffset;
Flags = TextureUsageFlags.None;
}
public TextureDescriptor(string name, SamplerType type, int handleIndex)
{
Name = name;
Type = type;
HandleIndex = handleIndex;
IsBindless = false;
CbufSlot = 0;
CbufOffset = 0;
Flags = TextureUsageFlags.None;
}
public static string ImageLoadOrStore(CodeGenContext context, AstOperation operation)
{
AstTextureOperation texOp = (AstTextureOperation)operation;
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;
// TODO: Bindless texture support. For now we just return 0/do nothing.
if (isBindless)
{
return(texOp.Inst == Instruction.ImageLoad ? NumberFormatter.FormatFloat(0) : "// imageStore(bindless)");
}
bool isArray = (texOp.Type & SamplerType.Array) != 0;
bool isIndexed = (texOp.Type & SamplerType.Indexed) != 0;
string texCall = texOp.Inst == Instruction.ImageLoad ? "imageLoad" : "imageStore";
int srcIndex = isBindless ? 1 : 0;
string Src(VariableType type)
{
return(GetSoureExpr(context, texOp.GetSource(srcIndex++), type));
}
string indexExpr = null;
if (isIndexed)
{
indexExpr = Src(VariableType.S32);
}
string imageName = OperandManager.GetImageName(context.Config.Stage, texOp, indexExpr);
texCall += "(" + imageName;
int coordsCount = texOp.Type.GetDimensions();
int pCount = coordsCount + (isArray ? 1 : 0);
void Append(string str)
{
texCall += ", " + str;
}
string ApplyScaling(string vector)
{
int index = context.FindImageDescriptorIndex(texOp);
TextureUsageFlags flags = TextureUsageFlags.NeedsScaleValue;
if ((context.Config.Stage == ShaderStage.Fragment || context.Config.Stage == ShaderStage.Compute) &&
texOp.Inst == Instruction.ImageLoad &&
!isBindless &&
!isIndexed)
{
// Image scales start after texture ones.
int scaleIndex = context.TextureDescriptors.Count + index;
if (pCount == 3 && isArray)
{
// The array index is not scaled, just x and y.
vector = "ivec3(Helper_TexelFetchScale((" + vector + ").xy, " + scaleIndex + "), (" + vector + ").z)";
}
else if (pCount == 2 && !isArray)
{
vector = "Helper_TexelFetchScale(" + vector + ", " + scaleIndex + ")";
}
else
{
flags |= TextureUsageFlags.ResScaleUnsupported;
}
}
else
{
flags |= TextureUsageFlags.ResScaleUnsupported;
}
if (!isBindless)
{
context.ImageDescriptors[index] = context.ImageDescriptors[index].SetFlag(flags);
}
return(vector);
}
if (pCount > 1)
{
string[] elems = new string[pCount];
for (int index = 0; index < pCount; index++)
{
elems[index] = Src(VariableType.S32);
}
Append(ApplyScaling("ivec" + pCount + "(" + string.Join(", ", elems) + ")"));
}
else
{
Append(Src(VariableType.S32));
}
if (texOp.Inst == Instruction.ImageStore)
{
VariableType type = texOp.Format.GetComponentType();
string[] cElems = new string[4];
for (int index = 0; index < 4; index++)
{
if (srcIndex < texOp.SourcesCount)
{
cElems[index] = Src(type);
}
else
{
cElems[index] = type switch
{
VariableType.S32 => NumberFormatter.FormatInt(0),
VariableType.U32 => NumberFormatter.FormatUint(0),
_ => NumberFormatter.FormatFloat(0)
};
}
}
string prefix = type switch
{
VariableType.S32 => "i",
VariableType.U32 => "u",
_ => string.Empty
};
Append(prefix + "vec4(" + string.Join(", ", cElems) + ")");
}
texCall += ")" + (texOp.Inst == Instruction.ImageLoad ? GetMask(texOp.Index) : "");
return(texCall);
}
public TextureDescriptor SetFlag(TextureUsageFlags flag)
{
Flags |= flag;
return(this);
}
/// <summary>
/// Constructs the texture binding information structure.
/// </summary>
/// <param name="target">The shader sampler target type</param>
/// <param name="handle">The shader texture handle (read index into the texture constant buffer)</param>
/// <param name="flags">The texture's usage flags, indicating how it is used in the shader</param>
public TextureBindingInfo(Target target, int handle, TextureUsageFlags flags) : this(target, (Format)0, handle, flags)
{
}