private static void DeclareUniformBuffers(CodeGenContext context, BufferDescriptor[] descriptors)
{
if (descriptors.Length == 0)
{
return;
}
uint ubSize = Constants.ConstantBufferSize / 16;
var ubArrayType = context.TypeArray(context.TypeVector(context.TypeFP32(), 4), context.Constant(context.TypeU32(), ubSize), true);
context.Decorate(ubArrayType, Decoration.ArrayStride, (LiteralInteger)16);
var ubStructType = context.TypeStruct(true, ubArrayType);
context.Decorate(ubStructType, Decoration.Block);
context.MemberDecorate(ubStructType, 0, Decoration.Offset, (LiteralInteger)0);
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.CbIndexing))
{
int count = descriptors.Max(x => x.Slot) + 1;
var ubStructArrayType = context.TypeArray(ubStructType, context.Constant(context.TypeU32(), count));
var ubPointerType = context.TypePointer(StorageClass.Uniform, ubStructArrayType);
var ubVariable = context.Variable(ubPointerType, StorageClass.Uniform);
context.Name(ubVariable, $"{GetStagePrefix(context.Config.Stage)}_u");
context.Decorate(ubVariable, Decoration.DescriptorSet, (LiteralInteger)0);
context.Decorate(ubVariable, Decoration.Binding, (LiteralInteger)context.Config.FirstConstantBufferBinding);
context.AddGlobalVariable(ubVariable);
context.UniformBuffersArray = ubVariable;
}
else
{
var ubPointerType = context.TypePointer(StorageClass.Uniform, ubStructType);
foreach (var descriptor in descriptors)
{
var ubVariable = context.Variable(ubPointerType, StorageClass.Uniform);
context.Name(ubVariable, $"{GetStagePrefix(context.Config.Stage)}_c{descriptor.Slot}");
context.Decorate(ubVariable, Decoration.DescriptorSet, (LiteralInteger)0);
context.Decorate(ubVariable, Decoration.Binding, (LiteralInteger)descriptor.Binding);
context.AddGlobalVariable(ubVariable);
context.UniformBuffers.Add(descriptor.Slot, ubVariable);
}
}
}
private static void DeclareStorageBuffers(CodeGenContext context, BufferDescriptor[] descriptors)
{
if (descriptors.Length == 0)
{
return;
}
int setIndex = context.Config.Options.TargetApi == TargetApi.Vulkan ? 1 : 0;
int count = descriptors.Max(x => x.Binding) + 1;
var sbArrayType = context.TypeRuntimeArray(context.TypeU32());
context.Decorate(sbArrayType, Decoration.ArrayStride, (LiteralInteger)4);
var sbStructType = context.TypeStruct(true, sbArrayType);
context.Decorate(sbStructType, Decoration.BufferBlock);
context.MemberDecorate(sbStructType, 0, Decoration.Offset, (LiteralInteger)0);
var sbStructArrayType = context.TypeArray(sbStructType, context.Constant(context.TypeU32(), count));
var sbPointerType = context.TypePointer(StorageClass.Uniform, sbStructArrayType);
var sbVariable = context.Variable(sbPointerType, StorageClass.Uniform);
context.Name(sbVariable, $"{GetStagePrefix(context.Config.Stage)}_s");
context.Decorate(sbVariable, Decoration.DescriptorSet, (LiteralInteger)setIndex);
context.Decorate(sbVariable, Decoration.Binding, (LiteralInteger)descriptors[0].Binding);
context.AddGlobalVariable(sbVariable);
context.StorageBuffersArray = sbVariable;
}
private static void DeclareSupportBuffer(CodeGenContext context)
{
if (!context.Config.Stage.SupportsRenderScale() && !(context.Config.LastInVertexPipeline && context.Config.GpuAccessor.QueryViewportTransformDisable()))
{
return;
}
var isBgraArrayType = context.TypeArray(context.TypeU32(), context.Constant(context.TypeU32(), SupportBuffer.FragmentIsBgraCount));
var viewportInverseVectorType = context.TypeVector(context.TypeFP32(), 4);
var renderScaleArrayType = context.TypeArray(context.TypeFP32(), context.Constant(context.TypeU32(), SupportBuffer.RenderScaleMaxCount));
context.Decorate(isBgraArrayType, Decoration.ArrayStride, (LiteralInteger)SupportBuffer.FieldSize);
context.Decorate(renderScaleArrayType, Decoration.ArrayStride, (LiteralInteger)SupportBuffer.FieldSize);
var supportBufferStructType = context.TypeStruct(false, context.TypeU32(), isBgraArrayType, viewportInverseVectorType, context.TypeS32(), renderScaleArrayType);
context.MemberDecorate(supportBufferStructType, 0, Decoration.Offset, (LiteralInteger)SupportBuffer.FragmentAlphaTestOffset);
context.MemberDecorate(supportBufferStructType, 1, Decoration.Offset, (LiteralInteger)SupportBuffer.FragmentIsBgraOffset);
context.MemberDecorate(supportBufferStructType, 2, Decoration.Offset, (LiteralInteger)SupportBuffer.ViewportInverseOffset);
context.MemberDecorate(supportBufferStructType, 3, Decoration.Offset, (LiteralInteger)SupportBuffer.FragmentRenderScaleCountOffset);
context.MemberDecorate(supportBufferStructType, 4, Decoration.Offset, (LiteralInteger)SupportBuffer.GraphicsRenderScaleOffset);
context.Decorate(supportBufferStructType, Decoration.Block);
var supportBufferPointerType = context.TypePointer(StorageClass.Uniform, supportBufferStructType);
var supportBufferVariable = context.Variable(supportBufferPointerType, StorageClass.Uniform);
context.Decorate(supportBufferVariable, Decoration.DescriptorSet, (LiteralInteger)0);
context.Decorate(supportBufferVariable, Decoration.Binding, (LiteralInteger)0);
context.AddGlobalVariable(supportBufferVariable);
context.SupportBuffer = supportBufferVariable;
}
private static SpvInstruction DeclareMemory(CodeGenContext context, StorageClass storage, int size)
{
var arrayType = context.TypeArray(context.TypeU32(), context.Constant(context.TypeU32(), size));
var pointerType = context.TypePointer(storage, arrayType);
var variable = context.Variable(pointerType, storage);
context.AddGlobalVariable(variable);
return(variable);
}
private static void DeclareSamplers(CodeGenContext context, TextureDescriptor[] descriptors)
{
foreach (var descriptor in descriptors)
{
var meta = new TextureMeta(descriptor.CbufSlot, descriptor.HandleIndex, descriptor.Format, descriptor.Type);
if (context.Samplers.ContainsKey(meta))
{
continue;
}
bool isBuffer = (descriptor.Type & SamplerType.Mask) == SamplerType.TextureBuffer;
int setIndex = context.Config.Options.TargetApi == TargetApi.Vulkan ? (isBuffer ? 4 : 2) : 0;
var dim = (meta.Type & SamplerType.Mask) switch
{
SamplerType.Texture1D => Dim.Dim1D,
SamplerType.Texture2D => Dim.Dim2D,
SamplerType.Texture3D => Dim.Dim3D,
SamplerType.TextureCube => Dim.Cube,
SamplerType.TextureBuffer => Dim.Buffer,
_ => throw new InvalidOperationException($"Invalid sampler type \"{meta.Type & SamplerType.Mask}\".")
};
var imageType = context.TypeImage(
context.TypeFP32(),
dim,
meta.Type.HasFlag(SamplerType.Shadow),
meta.Type.HasFlag(SamplerType.Array),
meta.Type.HasFlag(SamplerType.Multisample),
1,
ImageFormat.Unknown);
var nameSuffix = meta.CbufSlot < 0 ? $"_tcb_{meta.Handle:X}" : $"_cb{meta.CbufSlot}_{meta.Handle:X}";
var sampledImageType = context.TypeSampledImage(imageType);
var sampledImagePointerType = context.TypePointer(StorageClass.UniformConstant, sampledImageType);
var sampledImageVariable = context.Variable(sampledImagePointerType, StorageClass.UniformConstant);
context.Samplers.Add(meta, (imageType, sampledImageType, sampledImageVariable));
context.Name(sampledImageVariable, $"{GetStagePrefix(context.Config.Stage)}_tex{nameSuffix}");
context.Decorate(sampledImageVariable, Decoration.DescriptorSet, (LiteralInteger)setIndex);
context.Decorate(sampledImageVariable, Decoration.Binding, (LiteralInteger)descriptor.Binding);
context.AddGlobalVariable(sampledImageVariable);
}
}
private static void DeclareImages(CodeGenContext context, TextureDescriptor[] descriptors)
{
foreach (var descriptor in descriptors)
{
var meta = new TextureMeta(descriptor.CbufSlot, descriptor.HandleIndex, descriptor.Format);
if (context.Images.ContainsKey(meta))
{
continue;
}
int setIndex = context.Config.Options.TargetApi == TargetApi.Vulkan ? 3 : 0;
var dim = GetDim(descriptor.Type);
var imageType = context.TypeImage(
context.GetType(meta.Format.GetComponentType().Convert()),
dim,
descriptor.Type.HasFlag(SamplerType.Shadow),
descriptor.Type.HasFlag(SamplerType.Array),
descriptor.Type.HasFlag(SamplerType.Multisample),
AccessQualifier.ReadWrite,
GetImageFormat(meta.Format));
var nameSuffix = meta.CbufSlot < 0 ?
$"_tcb_{meta.Handle:X}_{meta.Format.ToGlslFormat()}" :
$"_cb{meta.CbufSlot}_{meta.Handle:X}_{meta.Format.ToGlslFormat()}";
var imagePointerType = context.TypePointer(StorageClass.UniformConstant, imageType);
var imageVariable = context.Variable(imagePointerType, StorageClass.UniformConstant);
context.Images.Add(meta, (imageType, imageVariable));
context.Name(imageVariable, $"{GetStagePrefix(context.Config.Stage)}_img{nameSuffix}");
context.Decorate(imageVariable, Decoration.DescriptorSet, (LiteralInteger)setIndex);
context.Decorate(imageVariable, Decoration.Binding, (LiteralInteger)descriptor.Binding);
if (descriptor.Flags.HasFlag(TextureUsageFlags.ImageCoherent))
{
context.Decorate(imageVariable, Decoration.Coherent);
}
context.AddGlobalVariable(imageVariable);
}
}
private static void DeclareUniformBuffers(CodeGenContext context, BufferDescriptor[] descriptors)
{
uint ubSize = Constants.ConstantBufferSize / 16;
var ubArrayType = context.TypeArray(context.TypeVector(context.TypeFP32(), 4), context.Constant(context.TypeU32(), ubSize), true);
context.Decorate(ubArrayType, Decoration.ArrayStride, (LiteralInteger)16);
var ubStructType = context.TypeStruct(true, ubArrayType);
context.Decorate(ubStructType, Decoration.Block);
context.MemberDecorate(ubStructType, 0, Decoration.Offset, (LiteralInteger)0);
var ubPointerType = context.TypePointer(StorageClass.Uniform, ubStructType);
foreach (var descriptor in descriptors)
{
var ubVariable = context.Variable(ubPointerType, StorageClass.Uniform);
context.Name(ubVariable, $"{GetStagePrefix(context.Config.Stage)}_c{descriptor.Slot}");
context.Decorate(ubVariable, Decoration.DescriptorSet, (LiteralInteger)0);
context.Decorate(ubVariable, Decoration.Binding, (LiteralInteger)descriptor.Binding);
context.AddGlobalVariable(ubVariable);
context.UniformBuffers.Add(descriptor.Slot, ubVariable);
}
}
