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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.Translation;
using System.Globalization;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
static class IoMap
{
public static (string, AggregateType) GetGlslVariable(
ShaderDefinitions definitions,
HostCapabilities hostCapabilities,
IoVariable ioVariable,
int location,
int component,
bool isOutput,
bool isPerPatch)
{
return ioVariable switch
{
IoVariable.BackColorDiffuse => ("gl_BackColor", AggregateType.Vector4 | AggregateType.FP32), // Deprecated.
IoVariable.BackColorSpecular => ("gl_BackSecondaryColor", AggregateType.Vector4 | AggregateType.FP32), // Deprecated.
IoVariable.BaseInstance => ("gl_BaseInstanceARB", AggregateType.S32),
IoVariable.BaseVertex => ("gl_BaseVertexARB", AggregateType.S32),
IoVariable.ClipDistance => ("gl_ClipDistance", AggregateType.Array | AggregateType.FP32),
IoVariable.CtaId => ("gl_WorkGroupID", AggregateType.Vector3 | AggregateType.U32),
IoVariable.DrawIndex => ("gl_DrawIDARB", AggregateType.S32),
IoVariable.FogCoord => ("gl_FogFragCoord", AggregateType.FP32), // Deprecated.
IoVariable.FragmentCoord => ("gl_FragCoord", AggregateType.Vector4 | AggregateType.FP32),
IoVariable.FragmentOutputColor => GetFragmentOutputColorVariableName(definitions, location),
IoVariable.FragmentOutputDepth => ("gl_FragDepth", AggregateType.FP32),
IoVariable.FrontColorDiffuse => ("gl_FrontColor", AggregateType.Vector4 | AggregateType.FP32), // Deprecated.
IoVariable.FrontColorSpecular => ("gl_FrontSecondaryColor", AggregateType.Vector4 | AggregateType.FP32), // Deprecated.
IoVariable.FrontFacing => ("gl_FrontFacing", AggregateType.Bool),
IoVariable.GlobalId => ("gl_GlobalInvocationID", AggregateType.Vector3 | AggregateType.U32),
IoVariable.InstanceId => ("gl_InstanceID", AggregateType.S32),
IoVariable.InstanceIndex => ("gl_InstanceIndex", AggregateType.S32),
IoVariable.InvocationId => ("gl_InvocationID", AggregateType.S32),
IoVariable.Layer => ("gl_Layer", AggregateType.S32),
IoVariable.PatchVertices => ("gl_PatchVerticesIn", AggregateType.S32),
IoVariable.PointCoord => ("gl_PointCoord", AggregateType.Vector2 | AggregateType.FP32),
IoVariable.PointSize => ("gl_PointSize", AggregateType.FP32),
IoVariable.Position => ("gl_Position", AggregateType.Vector4 | AggregateType.FP32),
IoVariable.PrimitiveId => GetPrimitiveIdVariableName(definitions.Stage, isOutput),
IoVariable.SubgroupEqMask => GetSubgroupMaskVariableName(hostCapabilities.SupportsShaderBallot, "Eq"),
IoVariable.SubgroupGeMask => GetSubgroupMaskVariableName(hostCapabilities.SupportsShaderBallot, "Ge"),
IoVariable.SubgroupGtMask => GetSubgroupMaskVariableName(hostCapabilities.SupportsShaderBallot, "Gt"),
IoVariable.SubgroupLaneId => GetSubgroupInvocationIdVariableName(hostCapabilities.SupportsShaderBallot),
IoVariable.SubgroupLeMask => GetSubgroupMaskVariableName(hostCapabilities.SupportsShaderBallot, "Le"),
IoVariable.SubgroupLtMask => GetSubgroupMaskVariableName(hostCapabilities.SupportsShaderBallot, "Lt"),
IoVariable.TessellationCoord => ("gl_TessCoord", AggregateType.Vector3 | AggregateType.FP32),
IoVariable.TessellationLevelInner => ("gl_TessLevelInner", AggregateType.Array | AggregateType.FP32),
IoVariable.TessellationLevelOuter => ("gl_TessLevelOuter", AggregateType.Array | AggregateType.FP32),
IoVariable.TextureCoord => ("gl_TexCoord", AggregateType.Array | AggregateType.Vector4 | AggregateType.FP32), // Deprecated.
IoVariable.ThreadId => ("gl_LocalInvocationID", AggregateType.Vector3 | AggregateType.U32),
IoVariable.ThreadKill => ("gl_HelperInvocation", AggregateType.Bool),
IoVariable.UserDefined => GetUserDefinedVariableName(definitions, location, component, isOutput, isPerPatch),
IoVariable.VertexId => ("gl_VertexID", AggregateType.S32),
IoVariable.VertexIndex => ("gl_VertexIndex", AggregateType.S32),
IoVariable.ViewportIndex => ("gl_ViewportIndex", AggregateType.S32),
IoVariable.ViewportMask => ("gl_ViewportMask", AggregateType.Array | AggregateType.S32),
_ => (null, AggregateType.Invalid),
};
}
public static bool IsPerVertexBuiltIn(ShaderStage stage, IoVariable ioVariable, bool isOutput)
{
switch (ioVariable)
{
case IoVariable.Layer:
case IoVariable.ViewportIndex:
case IoVariable.PointSize:
case IoVariable.Position:
case IoVariable.ClipDistance:
case IoVariable.PointCoord:
case IoVariable.ViewportMask:
if (isOutput)
{
return stage == ShaderStage.TessellationControl;
}
else
{
return stage == ShaderStage.TessellationControl ||
stage == ShaderStage.TessellationEvaluation ||
stage == ShaderStage.Geometry;
}
}
return false;
}
private static (string, AggregateType) GetFragmentOutputColorVariableName(ShaderDefinitions definitions, int location)
{
if (location < 0)
{
return (DefaultNames.OAttributePrefix, definitions.GetFragmentOutputColorType(0));
}
string name = DefaultNames.OAttributePrefix + location.ToString(CultureInfo.InvariantCulture);
return (name, definitions.GetFragmentOutputColorType(location));
}
private static (string, AggregateType) GetPrimitiveIdVariableName(ShaderStage stage, bool isOutput)
{
// The geometry stage has an additional gl_PrimitiveIDIn variable.
return (isOutput || stage != ShaderStage.Geometry ? "gl_PrimitiveID" : "gl_PrimitiveIDIn", AggregateType.S32);
}
private static (string, AggregateType) GetSubgroupMaskVariableName(bool supportsShaderBallot, string cc)
{
return supportsShaderBallot
? ($"unpackUint2x32(gl_SubGroup{cc}MaskARB)", AggregateType.Vector2 | AggregateType.U32)
: ($"gl_Subgroup{cc}Mask", AggregateType.Vector4 | AggregateType.U32);
}
private static (string, AggregateType) GetSubgroupInvocationIdVariableName(bool supportsShaderBallot)
{
return supportsShaderBallot
? ("gl_SubGroupInvocationARB", AggregateType.U32)
: ("gl_SubgroupInvocationID", AggregateType.U32);
}
private static (string, AggregateType) GetUserDefinedVariableName(ShaderDefinitions definitions, int location, int component, bool isOutput, bool isPerPatch)
{
string name = isPerPatch
? DefaultNames.PerPatchAttributePrefix
: (isOutput ? DefaultNames.OAttributePrefix : DefaultNames.IAttributePrefix);
if (location < 0)
{
return (name, definitions.GetUserDefinedType(0, isOutput));
}
name += location.ToString(CultureInfo.InvariantCulture);
if (definitions.HasPerLocationInputOrOutputComponent(IoVariable.UserDefined, location, component, isOutput))
{
name += "_" + "xyzw"[component & 3];
}
return (name, definitions.GetUserDefinedType(location, isOutput));
}
}
}
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