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ryujinx-final/Ryujinx.Graphics.Shader/CodeGen/Glsl/Varying.cs

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using Ryujinx.Graphics.Shader.Translation;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
public static class Varying
{
public static string GetName(int offset)
{
offset <<= 2;
if (offset >= AttributeConsts.UserAttributeBase &&
offset < AttributeConsts.UserAttributeEnd)
{
offset -= AttributeConsts.UserAttributeBase;
string name = $"{ DefaultNames.OAttributePrefix}{(offset >> 4)}";
name += "_" + "xyzw"[(offset >> 2) & 3];
return name;
}
switch (offset)
{
case AttributeConsts.PositionX:
case AttributeConsts.PositionY:
case AttributeConsts.PositionZ:
case AttributeConsts.PositionW:
return "gl_Position";
case AttributeConsts.PointSize:
return "gl_PointSize";
case AttributeConsts.ClipDistance0:
return "gl_ClipDistance[0]";
case AttributeConsts.ClipDistance1:
return "gl_ClipDistance[1]";
case AttributeConsts.ClipDistance2:
return "gl_ClipDistance[2]";
case AttributeConsts.ClipDistance3:
return "gl_ClipDistance[3]";
case AttributeConsts.ClipDistance4:
return "gl_ClipDistance[4]";
case AttributeConsts.ClipDistance5:
return "gl_ClipDistance[5]";
case AttributeConsts.ClipDistance6:
return "gl_ClipDistance[6]";
case AttributeConsts.ClipDistance7:
return "gl_ClipDistance[7]";
case AttributeConsts.VertexId:
return "gl_VertexID";
}
return null;
}
public static int GetSize(int offset)
{
switch (offset << 2)
{
case AttributeConsts.PositionX:
case AttributeConsts.PositionY:
case AttributeConsts.PositionZ:
case AttributeConsts.PositionW:
return 4;
}
return 1;
}
}
}