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Generated opengl function binding added. All opengl core profile function is now available but not in C# flavour.

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This commit is contained in:
Youmu Liu
2025-12-30 19:16:05 +08:00
parent b7c32bdf6d
commit 6484307b8a
40 changed files with 14965 additions and 3893 deletions
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StgSharp.GenerateGL/CodeGen/CsTypeMapper.cs
+70 -24
View File
@@ -36,63 +36,98 @@ namespace GenerateGL.CodeGen
GlParam param
)
{
// For delegate signatures, handles are kept as uint (not GlHandle) to match function pointer fields.
if (param.CType.Equals("GLchar", StringComparison.Ordinal) && param.IsPointer)
{
return "byte*";
int pointerLevel = param.PointerLevel;
if (param.CType.Equals("GLchar", StringComparison.Ordinal) && pointerLevel > 0) {
return $"byte{new string('*', pointerLevel)}";
}
string mapped = MapType(param.CType, allowVoid:false);
if (param.IsPointer)
if (pointerLevel > 0)
{
if (mapped == "void") {
return "void*";
return $"void{new string('*', pointerLevel)}";
}
return $"{mapped}*";
return $"{mapped}{new string('*', pointerLevel)}";
}
return mapped;
}
public static string MapDelegateReturn(
string cType
string cType,
int pointerLevel
)
{
return MapType(cType, allowVoid:true);
string mapped = MapType(cType, allowVoid:true);
if (pointerLevel > 0) {
return $"{mapped}{new string('*', pointerLevel)}";
}
return mapped;
}
public static string MapParameter(
GlParam param
)
{
// Handle GlHandle-like cases: if the C type is GLuint and name hints an object, map to GlHandle
if (param.CType.Equals("GLuint", StringComparison.Ordinal) &&
LooksLikeHandle(param.Name) &&
!param.IsPointer)
if (param.PointerLevel == 0)
{
return "GlHandle";
if (param.CType.Equals("GLenum", StringComparison.Ordinal) &&
LooksLikeShaderType(param.Name) &&
!param.IsPointer) {
return "ShaderType";
}
if (param.CType.Equals("GLuint", StringComparison.Ordinal) &&
LooksLikeHandle(param.Name) &&
!param.IsPointer) {
return "GlHandle";
}
}
int pointerLevel = param.PointerLevel;
if (param.CType.Equals("GLchar", StringComparison.Ordinal) && pointerLevel > 0) {
return $"byte{new string('*', pointerLevel)}";
}
string mapped = MapType(param.CType, allowVoid:false);
if (param.IsPointer)
if (pointerLevel > 0)
{
// const GLchar* -> byte*; other pointers -> void*/IntPtr depending on base
if (param.CType.Equals("GLchar", StringComparison.Ordinal))
{
return "byte*";
}
if (mapped == "void") {
return "void*";
return $"void{new string('*', pointerLevel)}";
}
return $"{mapped}*";
return $"{mapped}{new string('*', pointerLevel)}";
}
return mapped;
}
public static string MapReturn(
string cType
string cType,
int pointerLevel
)
{
return MapType(cType, allowVoid:true);
string mapped = MapType(cType, allowVoid:true);
if (pointerLevel > 0) {
return $"{mapped}{new string('*', pointerLevel)}";
}
return mapped;
}
public static bool TryMapConstPointerToSpan(
GlParam param,
out string spanElementType
)
{
spanElementType = string.Empty;
if (!param.IsConst || param.PointerLevel != 1) {
return false;
}
string mapped = MapType(param.CType, allowVoid:false);
if (mapped is "void") {
return false;
}
spanElementType = mapped;
return true;
}
private static bool LooksLikeHandle(
@@ -115,6 +150,17 @@ namespace GenerateGL.CodeGen
name.Contains("transformfeedback", StringComparison.OrdinalIgnoreCase);
}
private static bool LooksLikeShaderType(
string name
)
{
if (string.IsNullOrWhiteSpace(name)) {
return false;
}
return name.Contains("shadertype", StringComparison.OrdinalIgnoreCase) ||
name.Equals("type", StringComparison.OrdinalIgnoreCase);
}
private static string MapType(
string cType,
bool allowVoid
StgSharp.GenerateGL/CodeGen/Generator.cs
+192 -31
View File
@@ -26,6 +26,7 @@
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using System;
using System.Collections.Frozen;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
@@ -41,6 +42,11 @@ namespace GenerateGL.CodeGen
"3.3", "4.0", "4.1", "4.2", "4.3", "4.4", "4.5", "4.6"
};
private static readonly FrozenDictionary<string, string> ReservedNames =
new Dictionary<string, string>(StringComparer.Ordinal) {
{ "string", "@string" }, { "class", "@class" }, { "namespace", "@namespace" }, { "checked", "@checked" }, { "unchecked", "@unchecked" }, { "ref", "@ref" }, { "out", "@out" }, { "in", "@in" }, { "object", "@object" }, { "event", "@event" }, { "params", "@params" }, { "base", "@base" }, { "this", "@this" }, { "void", "@void" }, { "int", "@int" }, { "uint", "@uint" }, { "long", "@long" }, { "ulong", "@ulong" }, { "short", "@short" }, { "ushort", "@ushort" }, { "float", "@float" }, { "double", "@double" }, { "decimal", "@decimal" }, { "bool", "@bool" }, { "byte", "@byte" }, { "sbyte", "@sbyte" }, { "char", "@char" }, { "struct", "@struct" }, { "public", "@public" }, { "private", "@private" }, { "protected", "@protected" }, { "internal", "@internal" }, { "fixed", "@fixed" }
}.ToFrozenDictionary(StringComparer.Ordinal);
private readonly IReadOnlyDictionary<string, GlCommand> _commands;
private readonly IReadOnlyList<GlFeature> _features;
private readonly string _outputRoot;
@@ -63,14 +69,76 @@ namespace GenerateGL.CodeGen
}
Directory.CreateDirectory(_outputRoot);
List<GlCommand> all = new List<GlCommand>();
HashSet<string> previous = new HashSet<string>(StringComparer.Ordinal);
foreach (string v in TargetVersions)
{
IReadOnlyList<GlCommand> cmds = CollectCommandsUpToVersion(v);
all.AddRange(cmds);
WriteOpenGLFunctionFile(v, cmds);
WriteGlContextFile(v, cmds);
IReadOnlyList<GlCommand> cmdsUpTo = CollectCommandsUpToVersion(v);
List<GlCommand> versionCmds = cmdsUpTo.Where(c => !previous.Contains(c.Name))
.ToList();
foreach (GlCommand cmd in versionCmds) {
previous.Add(cmd.Name);
}
all.AddRange(versionCmds);
WriteOpenGLFunctionFile(v, versionCmds);
WriteGlContextFile(v, versionCmds);
}
WriteMergedGlContextFile(all);
WriteCommandHistoryFile(BuildCommandHistory());
}
private IReadOnlyDictionary<string, List<CommandHistoryEntry>> BuildCommandHistory()
{
Dictionary<string, List<CommandHistoryEntry>> history = new(StringComparer.Ordinal);
IEnumerable<GlFeature> ordered = _features.Where(f => Version.TryParse(f.Version, out _))
.OrderBy(f => Version.Parse(f.Version));
foreach (GlFeature feature in ordered)
{
string version = feature.Version;
foreach (string name in feature.RequiresCommands.Distinct(StringComparer.Ordinal))
{
if (!_commands.ContainsKey(name) || ShouldSkip(name))
{
continue;
}
if (!history.TryGetValue(name, out List<CommandHistoryEntry>? list))
{
list = new List<CommandHistoryEntry>();
history[name] = list;
}
if (list.Count == 0 ||
list[^1].Action != CommandHistoryAction.Added ||
list[^1].Version != version) {
list.Add(new CommandHistoryEntry(version, CommandHistoryAction.Added));
}
}
foreach (string name in feature.RemovedCommands.Distinct(StringComparer.Ordinal))
{
if (!_commands.ContainsKey(name) || ShouldSkip(name))
{
continue;
}
if (!history.TryGetValue(name, out List<CommandHistoryEntry>? list))
{
list = new List<CommandHistoryEntry>();
history[name] = list;
}
if (list.Count == 0 ||
list[^1].Action != CommandHistoryAction.Removed ||
list[^1].Version != version) {
list.Add(new CommandHistoryEntry(version, CommandHistoryAction.Removed));
}
}
}
return history;
}
private IReadOnlyList<GlCommand> CollectCommandsUpToVersion(
@@ -78,15 +146,30 @@ namespace GenerateGL.CodeGen
)
{
Version target = Version.Parse(version);
IEnumerable<GlCommand?> selected = _features.Where(f => Version.TryParse(f.Version, out Version? fv) &&
fv <= target)
.SelectMany(f => f.RequiresCommands)
.Distinct(StringComparer.Ordinal)
.Select(name => _commands.TryGetValue(name, out GlCommand? c) ?
c :
null)
.Where(c => c != null)!;
return selected.ToList()!;
IEnumerable<GlFeature> ordered = _features.Where(f => Version.TryParse(f.Version, out Version? fv) &&
fv <= target)
.OrderBy(f => Version.Parse(f.Version));
HashSet<string> active = new HashSet<string>(StringComparer.Ordinal);
foreach (GlFeature feature in ordered)
{
foreach (string name in feature.RequiresCommands.Distinct(StringComparer.Ordinal))
{
if (_commands.ContainsKey(name)) {
active.Add(name);
}
}
foreach (string name in feature.RemovedCommands.Distinct(StringComparer.Ordinal)) {
active.Remove(name);
}
}
return active.Select(name => _commands.TryGetValue(name, out GlCommand? c) ? c : null)
.Where(c => c != null)!
.Cast<GlCommand>()
.ToList();
}
private static string DelegateSignature(
@@ -104,14 +187,15 @@ namespace GenerateGL.CodeGen
string name
)
{
return string.IsNullOrWhiteSpace(name) ?
"arg" :
name switch
{
"params" => "@params",
"event" => "@event",
_ => name
};
if (string.IsNullOrWhiteSpace(name)) {
return "arg";
}
if (ReservedNames.TryGetValue(name, out string? mapped)) {
return mapped;
}
return name;
}
private static bool ShouldSkip(
@@ -132,6 +216,43 @@ namespace GenerateGL.CodeGen
return name;
}
private void WriteCommandHistoryFile(
IReadOnlyDictionary<string, List<CommandHistoryEntry>> history
)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("// <auto-generated>");
sb.AppendLine($"// Generated by StgSharp.GenerateGL on {DateTime.UtcNow.ToString("u", CultureInfo.InvariantCulture)}");
sb.AppendLine("// Command availability history");
sb.AppendLine("// </auto-generated>");
sb.AppendLine("using System;\nusing System.Collections.Frozen;\nusing System.Collections.Generic;\n");
sb.AppendLine("namespace StgSharp.Graphics.OpenGL");
sb.AppendLine("{");
sb.AppendLine(" internal enum CommandHistoryAction { Added, Removed }");
sb.AppendLine();
sb.AppendLine(" internal readonly record struct CommandHistoryEntry(string Version, CommandHistoryAction Action);");
sb.AppendLine();
sb.AppendLine(" internal static class GlCommandHistory");
sb.AppendLine(" {");
sb.AppendLine(" internal static readonly FrozenDictionary<string, CommandHistoryEntry[]> History = new Dictionary<string, CommandHistoryEntry[]>(StringComparer.Ordinal)");
sb.AppendLine(" {");
foreach (KeyValuePair<string, List<CommandHistoryEntry>> kvp in history.OrderBy(k => k.Key, StringComparer.Ordinal))
{
string events = string.Join(", ", kvp.Value
.OrderBy(v => Version.Parse(v.Version))
.Select(v => $"new CommandHistoryEntry(\"{v.Version}\", CommandHistoryAction.{v.Action})"));
sb.AppendLine($" {{ \"{kvp.Key}\", new CommandHistoryEntry[] {{ {events} }} }},");
}
sb.AppendLine(" }.ToFrozenDictionary(StringComparer.Ordinal);");
sb.AppendLine(" }");
sb.AppendLine("}");
string fileName = Path.Combine(_outputRoot, "glCommandHistory.cs");
File.WriteAllText(fileName, sb.ToString(), Encoding.UTF8);
}
private void WriteGlContextFile(
string version,
IReadOnlyList<GlCommand> commands
@@ -149,7 +270,7 @@ namespace GenerateGL.CodeGen
sb.AppendLine(" {");
foreach (GlCommand cmd in commands.OrderBy(c => c!.Name, StringComparer.Ordinal))
{
string ret = CsTypeMapper.MapDelegateReturn(cmd.ReturnType);
string ret = CsTypeMapper.MapDelegateReturn(cmd.ReturnType, cmd.ReturnPointerLevel);
List<string> paramTypes = new List<string>();
foreach (GlParam p in cmd.Parameters)
{
@@ -188,7 +309,7 @@ namespace GenerateGL.CodeGen
sb.AppendLine(" {");
foreach (GlCommand cmd in distinct)
{
string ret = CsTypeMapper.MapDelegateReturn(cmd.ReturnType);
string ret = CsTypeMapper.MapDelegateReturn(cmd.ReturnType, cmd.ReturnPointerLevel);
List<string> paramTypes = new List<string>();
foreach (GlParam p in cmd.Parameters)
{
@@ -215,29 +336,38 @@ namespace GenerateGL.CodeGen
sb.AppendLine($"// Generated by StgSharp.GenerateGL on {DateTime.UtcNow.ToString("u", CultureInfo.InvariantCulture)}");
sb.AppendLine($"// Version: {version}");
sb.AppendLine("// </auto-generated>");
sb.AppendLine("using System;\nusing System.Runtime.CompilerServices;\nusing StgSharp.Graphics.OpenGL;\n");
sb.AppendLine("using System;\nusing System.Runtime.CompilerServices;\nusing System.Runtime.InteropServices;\nusing StgSharp.Graphics.OpenGL;\n");
sb.AppendLine("namespace StgSharp.Graphics.OpenGL");
sb.AppendLine("{");
sb.AppendLine(" public unsafe partial class OpenGLFunction");
sb.AppendLine(" {");
foreach (GlCommand cmd in commands.OrderBy(c => c!.Name, StringComparer.Ordinal))
{
string ret = CsTypeMapper.MapReturn(cmd.ReturnType);
string ret = CsTypeMapper.MapReturn(cmd.ReturnType, cmd.ReturnPointerLevel);
string rawName = cmd.Name; // original glXxx
string methodName = TrimGlPrefix(rawName);
List<string> paramList = new List<string>();
List<string> callArgs = new List<string>();
List<(string Type,string Name)> pinned = new();
foreach (GlParam p in cmd.Parameters)
{
string mapped = CsTypeMapper.MapParameter(p);
string pname = SafeName(p.Name);
paramList.Add($"{mapped} {pname}");
if (mapped == "GlHandle")
if (CsTypeMapper.TryMapConstPointerToSpan(p, out string spanElementType))
{
callArgs.Add($"{pname}.Value");
paramList.Add($"ReadOnlySpan<{spanElementType}> {pname}");
pinned.Add((spanElementType, pname));
callArgs.Add($"{pname}Ptr");
} else
{
callArgs.Add(pname);
string mapped = CsTypeMapper.MapParameter(p);
paramList.Add($"{mapped} {pname}");
if (mapped == "GlHandle")
{
callArgs.Add($"{pname}.Value");
} else
{
callArgs.Add(pname);
}
}
}
string signature = string.Join(", ", paramList);
@@ -246,7 +376,25 @@ namespace GenerateGL.CodeGen
sb.AppendLine($" public {ret} {methodName}({signature})");
sb.AppendLine(" {");
string prefix = ret == "void" ? string.Empty : "return ";
sb.AppendLine($" {prefix}Context.{rawName}({call});");
if (pinned.Count == 0)
{
sb.AppendLine($" {prefix}Context.{rawName}({call});");
} else
{
string indent = " ";
foreach ((string Type, string Name) pin in pinned)
{
sb.AppendLine($"{indent}fixed ({pin.Type}* {pin.Name}Ptr = {pin.Name})");
sb.AppendLine($"{indent}{{");
indent += " ";
}
sb.AppendLine($"{indent}{prefix}Context.{rawName}({call});");
for (int i = 0; i < pinned.Count; i++)
{
indent = indent.Substring(0, indent.Length - 4);
sb.AppendLine($"{indent}}}");
}
}
sb.AppendLine(" }");
sb.AppendLine();
}
@@ -257,5 +405,18 @@ namespace GenerateGL.CodeGen
File.WriteAllText(fileName, sb.ToString(), Encoding.UTF8);
}
private enum CommandHistoryAction
{
Added,
Removed
}
private readonly record struct CommandHistoryEntry(
string Version,
CommandHistoryAction Action
);
}
}
StgSharp.GenerateGL/CodeGen/GlXmlParser.cs
+40 -10
View File
@@ -49,11 +49,12 @@ namespace GenerateGL.CodeGen
XElement element
)
{
return BuildCType(element, out _, out _);
return BuildCType(element, out _, out _, out _);
}
private static string BuildCType(
XElement element,
out int pointerLevel,
out bool isPointer,
out bool isConst
)
@@ -67,7 +68,8 @@ namespace GenerateGL.CodeGen
_ => string.Empty
});
string raw = string.Concat(parts).Trim();
isPointer = raw.Contains('*');
pointerLevel = raw.Count(ch => ch == '*');
isPointer = pointerLevel > 0;
isConst = raw.Contains("const", StringComparison.OrdinalIgnoreCase);
string cleaned = raw.Replace("const", string.Empty, StringComparison.OrdinalIgnoreCase)
.Replace("*", string.Empty)
@@ -91,18 +93,20 @@ namespace GenerateGL.CodeGen
}
string name = proto.Element("name")?.Value ?? string.Empty;
string returnType = BuildCType(proto);
string returnType = BuildCType(proto, out int retPtrLevel, out _,
out bool retIsConst);
List<GlParam> parameters = new List<GlParam>();
foreach (XElement p in cmd.Elements("param"))
{
string pName = p.Element("name")?.Value ?? string.Empty;
string cType = BuildCType(p, out bool isPtr, out bool isConst);
parameters.Add(new GlParam(pName, cType, isPtr, isConst));
string cType = BuildCType(p, out int pointerLevel, out _, out bool isConst);
parameters.Add(new GlParam(pName, cType, pointerLevel, isConst));
}
if (!string.IsNullOrEmpty(name)) {
dict[name] = new GlCommand(name, returnType, parameters);
dict[name] = new GlCommand(name, returnType, retPtrLevel, retIsConst,
parameters);
}
}
return dict;
@@ -125,10 +129,9 @@ namespace GenerateGL.CodeGen
string? profile = feature.Attribute("profile")?.Value;
// accept core, compatibility, or missing profile
// Only core (or no profile for legacy) to stay aligned with core profile
if (!string.IsNullOrEmpty(profile) &&
!string.Equals(profile, "core", StringComparison.Ordinal) &&
!string.Equals(profile, "compatibility", StringComparison.Ordinal))
!string.Equals(profile, "core", StringComparison.Ordinal))
{
continue;
}
@@ -137,6 +140,13 @@ namespace GenerateGL.CodeGen
List<string> requires = new List<string>();
foreach (XElement req in feature.Elements("require"))
{
string? reqProfile = req.Attribute("profile")?.Value;
if (!string.IsNullOrEmpty(reqProfile) &&
!string.Equals(reqProfile, "core", StringComparison.Ordinal))
{
continue;
}
foreach (XElement cmd in req.Elements("command"))
{
string? name = cmd.Attribute("name")?.Value;
@@ -145,7 +155,27 @@ namespace GenerateGL.CodeGen
}
}
}
list.Add(new GlFeature(version, requires));
List<string> removes = new List<string>();
foreach (XElement rem in feature.Elements("remove"))
{
string? remProfile = rem.Attribute("profile")?.Value;
if (!string.IsNullOrEmpty(remProfile) &&
!string.Equals(remProfile, "core", StringComparison.Ordinal))
{
continue;
}
foreach (XElement cmd in rem.Elements("command"))
{
string? name = cmd.Attribute("name")?.Value;
if (!string.IsNullOrEmpty(name)) {
removes.Add(name);
}
}
}
list.Add(new GlFeature(version, requires, removes));
}
return list;
}
StgSharp.GenerateGL/CodeGen/Models.cs
+11 -3
View File
@@ -32,18 +32,26 @@ namespace GenerateGL.CodeGen
internal sealed record GlCommand(
string Name,
string ReturnType,
int ReturnPointerLevel,
bool ReturnIsConst,
IReadOnlyList<GlParam> Parameters
);
internal sealed record GlParam(
string Name,
string CType,
bool IsPointer,
int PointerLevel,
bool IsConst
);
)
{
public bool IsPointer => PointerLevel > 0;
}
internal sealed record GlFeature(
string Version,
IReadOnlyList<string> RequiresCommands
IReadOnlyList<string> RequiresCommands,
IReadOnlyList<string> RemovedCommands
);
}
StgSharp.GenerateGL/GenerateGL.csproj
+1
View File
@@ -5,6 +5,7 @@
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<Platforms>AnyCPU;x64</Platforms>
</PropertyGroup>
<ItemGroup>
StgSharp.GenerateGL/gl.h
+4248
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