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Ryujinx/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
riperiperi 8fa248ceb4
Vulkan: Add workarounds for MoltenVK (#4202)
* Add MVK basics.

* Use appropriate output attribute types

* 4kb vertex alignment, bunch of fixes

* Add reduced shader precision mode for mvk.

* Disable ASTC on MVK for now

* Only request robustnes2 when it is available.

* It's just the one feature actually

* Add triangle fan conversion

* Allow NullDescriptor on MVK for some reason.

* Force safe blit on MoltenVK

* Use ASTC only when formats are all available.

* Disable multilevel 3d texture views

* Filter duplicate render targets (on backend)

* Add Automatic MoltenVK Configuration

* Do not create color attachment views with formats that are not RT compatible

* Make sure that the host format matches the vertex shader input types for invalid/unknown guest formats

* FIx rebase for Vertex Attrib State

* Fix 4b alignment for vertex

* Use asynchronous queue submits for MVK

* Ensure color clear shader has correct output type

* Update MoltenVK config

* Always use MoltenVK workarounds on MacOS

* Make MVK supersede all vendors

* Fix rebase

* Various fixes on rebase

* Get portability flags from extension

* Fix some minor rebasing issues

* Style change

* Use LibraryImport for MVKConfiguration

* Rename MoltenVK vendor to Apple

Intel and AMD GPUs on moltenvk report with the those vendors - only apple silicon reports with vendor 0x106B.

* Fix features2 rebase conflict

* Rename fragment output type

* Add missing check for fragment output types

Might have caused the crash in MK8

* Only do fragment output specialization on MoltenVK

* Avoid copy when passing capabilities

* Self feedback

* Address feedback

Co-authored-by: gdk <gab.dark.100@gmail.com>
Co-authored-by: nastys <nastys@users.noreply.github.com>
2023-01-13 01:31:21 +01:00

765 lines
No EOL
32 KiB
C#

using Ryujinx.Common;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class Declarations
{
public static void Declare(CodeGenContext context, StructuredProgramInfo info)
{
context.AppendLine(context.Config.Options.TargetApi == TargetApi.Vulkan ? "#version 460 core" : "#version 450 core");
context.AppendLine("#extension GL_ARB_gpu_shader_int64 : enable");
if (context.Config.GpuAccessor.QueryHostSupportsShaderBallot())
{
context.AppendLine("#extension GL_ARB_shader_ballot : enable");
}
else
{
context.AppendLine("#extension GL_KHR_shader_subgroup_basic : enable");
context.AppendLine("#extension GL_KHR_shader_subgroup_ballot : enable");
}
context.AppendLine("#extension GL_ARB_shader_group_vote : enable");
context.AppendLine("#extension GL_EXT_shader_image_load_formatted : enable");
context.AppendLine("#extension GL_EXT_texture_shadow_lod : enable");
if (context.Config.Stage == ShaderStage.Compute)
{
context.AppendLine("#extension GL_ARB_compute_shader : enable");
}
else if (context.Config.Stage == ShaderStage.Fragment)
{
if (context.Config.GpuAccessor.QueryHostSupportsFragmentShaderInterlock())
{
context.AppendLine("#extension GL_ARB_fragment_shader_interlock : enable");
}
else if (context.Config.GpuAccessor.QueryHostSupportsFragmentShaderOrderingIntel())
{
context.AppendLine("#extension GL_INTEL_fragment_shader_ordering : enable");
}
}
else
{
if (context.Config.Stage == ShaderStage.Vertex)
{
context.AppendLine("#extension GL_ARB_shader_draw_parameters : enable");
}
context.AppendLine("#extension GL_ARB_shader_viewport_layer_array : enable");
}
if (context.Config.GpPassthrough && context.Config.GpuAccessor.QueryHostSupportsGeometryShaderPassthrough())
{
context.AppendLine("#extension GL_NV_geometry_shader_passthrough : enable");
}
context.AppendLine("#pragma optionNV(fastmath off)");
context.AppendLine();
context.AppendLine($"const int {DefaultNames.UndefinedName} = 0;");
context.AppendLine();
if (context.Config.Stage == ShaderStage.Compute)
{
int localMemorySize = BitUtils.DivRoundUp(context.Config.GpuAccessor.QueryComputeLocalMemorySize(), 4);
if (localMemorySize != 0)
{
string localMemorySizeStr = NumberFormatter.FormatInt(localMemorySize);
context.AppendLine($"uint {DefaultNames.LocalMemoryName}[{localMemorySizeStr}];");
context.AppendLine();
}
int sharedMemorySize = BitUtils.DivRoundUp(context.Config.GpuAccessor.QueryComputeSharedMemorySize(), 4);
if (sharedMemorySize != 0)
{
string sharedMemorySizeStr = NumberFormatter.FormatInt(sharedMemorySize);
context.AppendLine($"shared uint {DefaultNames.SharedMemoryName}[{sharedMemorySizeStr}];");
context.AppendLine();
}
}
else if (context.Config.LocalMemorySize != 0)
{
int localMemorySize = BitUtils.DivRoundUp(context.Config.LocalMemorySize, 4);
string localMemorySizeStr = NumberFormatter.FormatInt(localMemorySize);
context.AppendLine($"uint {DefaultNames.LocalMemoryName}[{localMemorySizeStr}];");
context.AppendLine();
}
var cBufferDescriptors = context.Config.GetConstantBufferDescriptors();
if (cBufferDescriptors.Length != 0)
{
DeclareUniforms(context, cBufferDescriptors);
context.AppendLine();
}
var sBufferDescriptors = context.Config.GetStorageBufferDescriptors();
if (sBufferDescriptors.Length != 0)
{
DeclareStorages(context, sBufferDescriptors);
context.AppendLine();
}
var textureDescriptors = context.Config.GetTextureDescriptors();
if (textureDescriptors.Length != 0)
{
DeclareSamplers(context, textureDescriptors);
context.AppendLine();
}
var imageDescriptors = context.Config.GetImageDescriptors();
if (imageDescriptors.Length != 0)
{
DeclareImages(context, imageDescriptors);
context.AppendLine();
}
if (context.Config.Stage != ShaderStage.Compute)
{
if (context.Config.Stage == ShaderStage.Geometry)
{
InputTopology inputTopology = context.Config.GpuAccessor.QueryPrimitiveTopology();
string inPrimitive = inputTopology.ToGlslString();
context.AppendLine($"layout (invocations = {context.Config.ThreadsPerInputPrimitive}, {inPrimitive}) in;");
if (context.Config.GpPassthrough && context.Config.GpuAccessor.QueryHostSupportsGeometryShaderPassthrough())
{
context.AppendLine($"layout (passthrough) in gl_PerVertex");
context.EnterScope();
context.AppendLine("vec4 gl_Position;");
context.AppendLine("float gl_PointSize;");
context.AppendLine("float gl_ClipDistance[];");
context.LeaveScope(";");
}
else
{
string outPrimitive = context.Config.OutputTopology.ToGlslString();
int maxOutputVertices = context.Config.GpPassthrough
? inputTopology.ToInputVertices()
: context.Config.MaxOutputVertices;
context.AppendLine($"layout ({outPrimitive}, max_vertices = {maxOutputVertices}) out;");
}
context.AppendLine();
}
else if (context.Config.Stage == ShaderStage.TessellationControl)
{
int threadsPerInputPrimitive = context.Config.ThreadsPerInputPrimitive;
context.AppendLine($"layout (vertices = {threadsPerInputPrimitive}) out;");
context.AppendLine();
}
else if (context.Config.Stage == ShaderStage.TessellationEvaluation)
{
bool tessCw = context.Config.GpuAccessor.QueryTessCw();
if (context.Config.Options.TargetApi == TargetApi.Vulkan)
{
// We invert the front face on Vulkan backend, so we need to do that here aswell.
tessCw = !tessCw;
}
string patchType = context.Config.GpuAccessor.QueryTessPatchType().ToGlsl();
string spacing = context.Config.GpuAccessor.QueryTessSpacing().ToGlsl();
string windingOrder = tessCw ? "cw" : "ccw";
context.AppendLine($"layout ({patchType}, {spacing}, {windingOrder}) in;");
context.AppendLine();
}
if (context.Config.UsedInputAttributes != 0 || context.Config.GpPassthrough)
{
DeclareInputAttributes(context, info);
context.AppendLine();
}
if (context.Config.UsedOutputAttributes != 0 || context.Config.Stage != ShaderStage.Fragment)
{
DeclareOutputAttributes(context, info);
context.AppendLine();
}
if (context.Config.UsedInputAttributesPerPatch.Count != 0)
{
DeclareInputAttributesPerPatch(context, context.Config.UsedInputAttributesPerPatch);
context.AppendLine();
}
if (context.Config.UsedOutputAttributesPerPatch.Count != 0)
{
DeclareUsedOutputAttributesPerPatch(context, context.Config.UsedOutputAttributesPerPatch);
context.AppendLine();
}
if (context.Config.TransformFeedbackEnabled && context.Config.LastInVertexPipeline)
{
var tfOutput = context.Info.GetTransformFeedbackOutput(AttributeConsts.PositionX);
if (tfOutput.Valid)
{
context.AppendLine($"layout (xfb_buffer = {tfOutput.Buffer}, xfb_offset = {tfOutput.Offset}, xfb_stride = {tfOutput.Stride}) out gl_PerVertex");
context.EnterScope();
context.AppendLine("vec4 gl_Position;");
context.LeaveScope(context.Config.Stage == ShaderStage.TessellationControl ? " gl_out[];" : ";");
}
}
}
else
{
string localSizeX = NumberFormatter.FormatInt(context.Config.GpuAccessor.QueryComputeLocalSizeX());
string localSizeY = NumberFormatter.FormatInt(context.Config.GpuAccessor.QueryComputeLocalSizeY());
string localSizeZ = NumberFormatter.FormatInt(context.Config.GpuAccessor.QueryComputeLocalSizeZ());
context.AppendLine(
"layout (" +
$"local_size_x = {localSizeX}, " +
$"local_size_y = {localSizeY}, " +
$"local_size_z = {localSizeZ}) in;");
context.AppendLine();
}
bool isFragment = context.Config.Stage == ShaderStage.Fragment;
if (isFragment || context.Config.Stage == ShaderStage.Compute || context.Config.Stage == ShaderStage.Vertex)
{
if (isFragment && context.Config.GpuAccessor.QueryEarlyZForce())
{
context.AppendLine("layout(early_fragment_tests) in;");
context.AppendLine();
}
if ((context.Config.UsedFeatures & (FeatureFlags.FragCoordXY | FeatureFlags.IntegerSampling)) != 0)
{
string stage = OperandManager.GetShaderStagePrefix(context.Config.Stage);
int scaleElements = context.Config.GetTextureDescriptors().Length + context.Config.GetImageDescriptors().Length;
if (isFragment)
{
scaleElements++; // Also includes render target scale, for gl_FragCoord.
}
DeclareSupportUniformBlock(context, context.Config.Stage, scaleElements);
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.IntegerSampling) && scaleElements != 0)
{
AppendHelperFunction(context, $"Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_{stage}.glsl");
context.AppendLine();
}
}
else if (isFragment || context.Config.Stage == ShaderStage.Vertex)
{
DeclareSupportUniformBlock(context, context.Config.Stage, 0);
}
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.AtomicMinMaxS32Shared) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/AtomicMinMaxS32Shared.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.AtomicMinMaxS32Storage) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/AtomicMinMaxS32Storage.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.MultiplyHighS32) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/MultiplyHighS32.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.MultiplyHighU32) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/MultiplyHighU32.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.Shuffle) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/Shuffle.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleDown) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleUp) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleUp.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleXor) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleXor.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.StoreSharedSmallInt) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/StoreSharedSmallInt.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.StoreStorageSmallInt) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/StoreStorageSmallInt.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.SwizzleAdd) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/SwizzleAdd.glsl");
}
}
private static string GetTfLayout(TransformFeedbackOutput tfOutput)
{
if (tfOutput.Valid)
{
return $"layout (xfb_buffer = {tfOutput.Buffer}, xfb_offset = {tfOutput.Offset}, xfb_stride = {tfOutput.Stride}) ";
}
return string.Empty;
}
public static void DeclareLocals(CodeGenContext context, StructuredFunction function)
{
foreach (AstOperand decl in function.Locals)
{
string name = context.OperandManager.DeclareLocal(decl);
context.AppendLine(GetVarTypeName(context, decl.VarType) + " " + name + ";");
}
}
public static string GetVarTypeName(CodeGenContext context, AggregateType type, bool precise = true)
{
if (context.Config.GpuAccessor.QueryHostReducedPrecision())
{
precise = false;
}
return type switch
{
AggregateType.Void => "void",
AggregateType.Bool => "bool",
AggregateType.FP32 => precise ? "precise float" : "float",
AggregateType.FP64 => "double",
AggregateType.S32 => "int",
AggregateType.U32 => "uint",
AggregateType.Vector2 | AggregateType.Bool => "bvec2",
AggregateType.Vector2 | AggregateType.FP32 => precise ? "precise vec2" : "vec2",
AggregateType.Vector2 | AggregateType.FP64 => "dvec2",
AggregateType.Vector2 | AggregateType.S32 => "ivec2",
AggregateType.Vector2 | AggregateType.U32 => "uvec2",
AggregateType.Vector3 | AggregateType.Bool => "bvec3",
AggregateType.Vector3 | AggregateType.FP32 => precise ? "precise vec3" : "vec3",
AggregateType.Vector3 | AggregateType.FP64 => "dvec3",
AggregateType.Vector3 | AggregateType.S32 => "ivec3",
AggregateType.Vector3 | AggregateType.U32 => "uvec3",
AggregateType.Vector4 | AggregateType.Bool => "bvec4",
AggregateType.Vector4 | AggregateType.FP32 => precise ? "precise vec4" : "vec4",
AggregateType.Vector4 | AggregateType.FP64 => "dvec4",
AggregateType.Vector4 | AggregateType.S32 => "ivec4",
AggregateType.Vector4 | AggregateType.U32 => "uvec4",
_ => throw new ArgumentException($"Invalid variable type \"{type}\".")
};
}
private static void DeclareUniforms(CodeGenContext context, BufferDescriptor[] descriptors)
{
string ubSize = "[" + NumberFormatter.FormatInt(Constants.ConstantBufferSize / 16) + "]";
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.CbIndexing))
{
string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
ubName += "_" + DefaultNames.UniformNamePrefix;
string blockName = $"{ubName}_{DefaultNames.BlockSuffix}";
context.AppendLine($"layout (binding = {context.Config.FirstConstantBufferBinding}, std140) uniform {blockName}");
context.EnterScope();
context.AppendLine("vec4 " + DefaultNames.DataName + ubSize + ";");
context.LeaveScope($" {ubName}[{NumberFormatter.FormatInt(descriptors.Max(x => x.Slot) + 1)}];");
}
else
{
foreach (var descriptor in descriptors)
{
string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
ubName += "_" + DefaultNames.UniformNamePrefix + descriptor.Slot;
context.AppendLine($"layout (binding = {descriptor.Binding}, std140) uniform {ubName}");
context.EnterScope();
context.AppendLine("vec4 " + OperandManager.GetUbName(context.Config.Stage, descriptor.Slot, false) + ubSize + ";");
context.LeaveScope(";");
}
}
}
private static void DeclareStorages(CodeGenContext context, BufferDescriptor[] descriptors)
{
string sbName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
sbName += "_" + DefaultNames.StorageNamePrefix;
string blockName = $"{sbName}_{DefaultNames.BlockSuffix}";
string layout = context.Config.Options.TargetApi == TargetApi.Vulkan ? ", set = 1" : string.Empty;
context.AppendLine($"layout (binding = {context.Config.FirstStorageBufferBinding}{layout}, std430) buffer {blockName}");
context.EnterScope();
context.AppendLine("uint " + DefaultNames.DataName + "[];");
context.LeaveScope($" {sbName}[{NumberFormatter.FormatInt(descriptors.Max(x => x.Slot) + 1)}];");
}
private static void DeclareSamplers(CodeGenContext context, TextureDescriptor[] descriptors)
{
int arraySize = 0;
foreach (var descriptor in descriptors)
{
if (descriptor.Type.HasFlag(SamplerType.Indexed))
{
if (arraySize == 0)
{
arraySize = ShaderConfig.SamplerArraySize;
}
else if (--arraySize != 0)
{
continue;
}
}
string indexExpr = NumberFormatter.FormatInt(arraySize);
string samplerName = OperandManager.GetSamplerName(
context.Config.Stage,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Type.HasFlag(SamplerType.Indexed),
indexExpr);
string samplerTypeName = descriptor.Type.ToGlslSamplerType();
string layout = string.Empty;
if (context.Config.Options.TargetApi == TargetApi.Vulkan)
{
layout = ", set = 2";
}
context.AppendLine($"layout (binding = {descriptor.Binding}{layout}) uniform {samplerTypeName} {samplerName};");
}
}
private static void DeclareImages(CodeGenContext context, TextureDescriptor[] descriptors)
{
int arraySize = 0;
foreach (var descriptor in descriptors)
{
if (descriptor.Type.HasFlag(SamplerType.Indexed))
{
if (arraySize == 0)
{
arraySize = ShaderConfig.SamplerArraySize;
}
else if (--arraySize != 0)
{
continue;
}
}
string indexExpr = NumberFormatter.FormatInt(arraySize);
string imageName = OperandManager.GetImageName(
context.Config.Stage,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Format,
descriptor.Type.HasFlag(SamplerType.Indexed),
indexExpr);
string imageTypeName = descriptor.Type.ToGlslImageType(descriptor.Format.GetComponentType());
if (descriptor.Flags.HasFlag(TextureUsageFlags.ImageCoherent))
{
imageTypeName = "coherent " + imageTypeName;
}
string layout = descriptor.Format.ToGlslFormat();
if (!string.IsNullOrEmpty(layout))
{
layout = ", " + layout;
}
if (context.Config.Options.TargetApi == TargetApi.Vulkan)
{
layout = $", set = 3{layout}";
}
context.AppendLine($"layout (binding = {descriptor.Binding}{layout}) uniform {imageTypeName} {imageName};");
}
}
private static void DeclareInputAttributes(CodeGenContext context, StructuredProgramInfo info)
{
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.IaIndexing))
{
string suffix = context.Config.Stage == ShaderStage.Geometry ? "[]" : string.Empty;
context.AppendLine($"layout (location = 0) in vec4 {DefaultNames.IAttributePrefix}{suffix}[{Constants.MaxAttributes}];");
}
else
{
int usedAttributes = context.Config.UsedInputAttributes | context.Config.PassthroughAttributes;
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
DeclareInputAttribute(context, info, index);
usedAttributes &= ~(1 << index);
}
}
}
private static void DeclareInputAttributesPerPatch(CodeGenContext context, HashSet<int> attrs)
{
foreach (int attr in attrs.Order())
{
DeclareInputAttributePerPatch(context, attr);
}
}
private static void DeclareInputAttribute(CodeGenContext context, StructuredProgramInfo info, int attr)
{
string suffix = AttributeInfo.IsArrayAttributeGlsl(context.Config.Stage, isOutAttr: false) ? "[]" : string.Empty;
string iq = string.Empty;
if (context.Config.Stage == ShaderStage.Fragment)
{
iq = context.Config.ImapTypes[attr].GetFirstUsedType() switch
{
PixelImap.Constant => "flat ",
PixelImap.ScreenLinear => "noperspective ",
_ => string.Empty
};
}
string name = $"{DefaultNames.IAttributePrefix}{attr}";
if (context.Config.TransformFeedbackEnabled && context.Config.Stage == ShaderStage.Fragment)
{
for (int c = 0; c < 4; c++)
{
char swzMask = "xyzw"[c];
context.AppendLine($"layout (location = {attr}, component = {c}) {iq}in float {name}_{swzMask}{suffix};");
}
}
else
{
bool passthrough = (context.Config.PassthroughAttributes & (1 << attr)) != 0;
string pass = passthrough && context.Config.GpuAccessor.QueryHostSupportsGeometryShaderPassthrough() ? "passthrough, " : string.Empty;
string type;
if (context.Config.Stage == ShaderStage.Vertex)
{
type = context.Config.GpuAccessor.QueryAttributeType(attr).ToVec4Type();
}
else
{
type = AttributeType.Float.ToVec4Type();
}
context.AppendLine($"layout ({pass}location = {attr}) {iq}in {type} {name}{suffix};");
}
}
private static void DeclareInputAttributePerPatch(CodeGenContext context, int attr)
{
int location = context.Config.GetPerPatchAttributeLocation(attr);
string name = $"{DefaultNames.PerPatchAttributePrefix}{attr}";
context.AppendLine($"layout (location = {location}) patch in vec4 {name};");
}
private static void DeclareOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
{
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.OaIndexing))
{
context.AppendLine($"layout (location = 0) out vec4 {DefaultNames.OAttributePrefix}[{Constants.MaxAttributes}];");
}
else
{
int usedAttributes = context.Config.UsedOutputAttributes;
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
DeclareOutputAttribute(context, index);
usedAttributes &= ~(1 << index);
}
}
}
private static void DeclareOutputAttribute(CodeGenContext context, int attr)
{
string suffix = AttributeInfo.IsArrayAttributeGlsl(context.Config.Stage, isOutAttr: true) ? "[]" : string.Empty;
string name = $"{DefaultNames.OAttributePrefix}{attr}{suffix}";
if (context.Config.TransformFeedbackEnabled && context.Config.LastInVertexPipeline)
{
int attrOffset = AttributeConsts.UserAttributeBase + attr * 16;
int components = context.Config.LastInPipeline ? context.Info.GetTransformFeedbackOutputComponents(attrOffset) : 1;
if (components > 1)
{
string type = components switch
{
2 => "vec2",
3 => "vec3",
4 => "vec4",
_ => "float"
};
string xfb = string.Empty;
var tfOutput = context.Info.GetTransformFeedbackOutput(attrOffset);
if (tfOutput.Valid)
{
xfb = $", xfb_buffer = {tfOutput.Buffer}, xfb_offset = {tfOutput.Offset}, xfb_stride = {tfOutput.Stride}";
}
context.AppendLine($"layout (location = {attr}{xfb}) out {type} {name};");
}
else
{
for (int c = 0; c < 4; c++)
{
char swzMask = "xyzw"[c];
string xfb = string.Empty;
var tfOutput = context.Info.GetTransformFeedbackOutput(attrOffset + c * 4);
if (tfOutput.Valid)
{
xfb = $", xfb_buffer = {tfOutput.Buffer}, xfb_offset = {tfOutput.Offset}, xfb_stride = {tfOutput.Stride}";
}
context.AppendLine($"layout (location = {attr}, component = {c}{xfb}) out float {name}_{swzMask};");
}
}
}
else
{
string type = context.Config.Stage != ShaderStage.Fragment ? "vec4" :
context.Config.GpuAccessor.QueryFragmentOutputType(attr) switch
{
AttributeType.Sint => "ivec4",
AttributeType.Uint => "uvec4",
_ => "vec4"
};
if (context.Config.GpuAccessor.QueryHostReducedPrecision() && context.Config.Stage == ShaderStage.Vertex && attr == 0)
{
context.AppendLine($"layout (location = {attr}) invariant out {type} {name};");
}
else
{
context.AppendLine($"layout (location = {attr}) out {type} {name};");
}
}
}
private static void DeclareUsedOutputAttributesPerPatch(CodeGenContext context, HashSet<int> attrs)
{
foreach (int attr in attrs.Order())
{
DeclareOutputAttributePerPatch(context, attr);
}
}
private static void DeclareOutputAttributePerPatch(CodeGenContext context, int attr)
{
int location = context.Config.GetPerPatchAttributeLocation(attr);
string name = $"{DefaultNames.PerPatchAttributePrefix}{attr}";
context.AppendLine($"layout (location = {location}) patch out vec4 {name};");
}
private static void DeclareSupportUniformBlock(CodeGenContext context, ShaderStage stage, int scaleElements)
{
bool needsSupportBlock = stage == ShaderStage.Fragment ||
(context.Config.LastInVertexPipeline && context.Config.GpuAccessor.QueryViewportTransformDisable());
if (!needsSupportBlock && scaleElements == 0)
{
return;
}
context.AppendLine($"layout (binding = 0, std140) uniform {DefaultNames.SupportBlockName}");
context.EnterScope();
switch (stage)
{
case ShaderStage.Fragment:
case ShaderStage.Vertex:
context.AppendLine($"uint {DefaultNames.SupportBlockAlphaTestName};");
context.AppendLine($"bool {DefaultNames.SupportBlockIsBgraName}[{SupportBuffer.FragmentIsBgraCount}];");
context.AppendLine($"vec4 {DefaultNames.SupportBlockViewportInverse};");
context.AppendLine($"int {DefaultNames.SupportBlockFragmentScaleCount};");
break;
case ShaderStage.Compute:
context.AppendLine($"uint s_reserved[{SupportBuffer.ComputeRenderScaleOffset / SupportBuffer.FieldSize}];");
break;
}
context.AppendLine($"float {DefaultNames.SupportBlockRenderScaleName}[{SupportBuffer.RenderScaleMaxCount}];");
context.LeaveScope(";");
context.AppendLine();
}
private static void AppendHelperFunction(CodeGenContext context, string filename)
{
string code = EmbeddedResources.ReadAllText(filename);
code = code.Replace("\t", CodeGenContext.Tab);
code = code.Replace("$SHARED_MEM$", DefaultNames.SharedMemoryName);
code = code.Replace("$STORAGE_MEM$", OperandManager.GetShaderStagePrefix(context.Config.Stage) + "_" + DefaultNames.StorageNamePrefix);
if (context.Config.GpuAccessor.QueryHostSupportsShaderBallot())
{
code = code.Replace("$SUBGROUP_INVOCATION$", "gl_SubGroupInvocationARB");
code = code.Replace("$SUBGROUP_BROADCAST$", "readInvocationARB");
}
else
{
code = code.Replace("$SUBGROUP_INVOCATION$", "gl_SubgroupInvocationID");
code = code.Replace("$SUBGROUP_BROADCAST$", "subgroupBroadcast");
}
context.AppendLine(code);
context.AppendLine();
}
}
}