Files
stgsharp/StgSharp.Common/Graphics/OpenGL/glFunction.cs
T

814 lines
30 KiB
C#

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
// file="glFunction.cs"
// Project: StgSharp
// AuthorGroup: Nitload Space
// Copyright (c) Nitload Space. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the “Software”), to deal in the Software without restriction,
// including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software,
// and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and
// this permission notice shall be included in all copies
// or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS”,
// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH
// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using StgSharp.Graphics;
using StgSharp.Internal;
using StgSharp.Math;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.ExceptionServices;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
namespace StgSharp.Graphics.OpenGL
{
public unsafe partial class OpenGLFunction
{
private static Dictionary<IntPtr, OpenGLFunction> contextToGLMap = new Dictionary<IntPtr, OpenGLFunction>(
);
private static ThreadLocal<OpenGLFunction> _currentGL = new ThreadLocal<OpenGLFunction>(
);
private OpenglContext* _context;
private Lazy<int> _attachmentColorRange;
private OpenGLFunction()
{
textureUnitCountGetter = new Lazy<int>(
() => GetMaskInteger( glConst.MAX_TEXTURE_IMAGE_UNITS ) );
unusedTextureImageUintInitilizing = new Lazy<ConcurrentQueue<TextureUnit>>(
InitializeUnusedTextureImageUint );
_attachmentColorRange = new Lazy<int>(
() => {
return GetMaskInteger(
( uint )glConst.MAX_COLOR_ATTACHMENTS );
} );
}
public int AttachmentColorRange
{
get => _attachmentColorRange.Value;
}
public static OpenGLFunction CurrentGL
{
get { return _currentGL.Value; }
internal set { _currentGL.Value = value; }
}
internal IntPtr ContextHandle => ( IntPtr )_context;
protected ref OpenglContext Context
{
get
{
#if DEBUG
if( ( IntPtr )_context == IntPtr.Zero ) {
throw new NullReferenceException();
}
#endif
return ref ( *_context );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void ActiveTextureUnit( uint type )
{
Context.glActiveTexture( type );
}
[Conditional( "DEBUG" )]
public void Assert( bool shouldReportWhenNormal )
{
uint code = Context.glGetError();
if( code != glConst.NO_ERROR ) {
throw new GlExecutionException( code );
}
if( shouldReportWhenNormal ) {
Console.WriteLine( "OpenGL runs normally" );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void AttachShader( GlHandle program, GlHandle shader )
{
Context.glAttachShader( program.Value, shader.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void BindBuffer( BufferType bufferType, GlHandle handle )
{
Context.glBindBuffer( ( uint )bufferType, handle.Value );
}
/// <summary>
/// Bind a frame Buffer to a frame Buffer target Same function as <see
/// href="https://docs._gl/gl3/glBindFramebuffer">glBindFramebuffer</see>.
/// </summary>
/// <param _name="target"> The frame Buffer target of the binding operation. </param>
/// <param _name="handle"> The handle of the frame Buffer object to bind. </param>
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void BindFrameBuffer( FrameBufferTarget target, GlHandle handle )
{
Context.glBindFramebuffer( ( uint )target, handle.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void BindRenderBuffer( GlHandle handle )
{
Context.glBindRenderbuffer( glConst.RENDERBUFFER, handle.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void BindTexture( uint type, GlHandle texture )
{
Context.glBindTexture( type, texture.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void BindVertexArray( GlHandle handle )
{
Context.glBindVertexArray( handle.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public FrameBufferStatus CheckFrameBufferStatus(
FrameBufferTarget target )
{
return ( FrameBufferStatus )Context.glCheckFramebufferStatus(
( uint )target );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void Clear( MaskBufferBit mask )
{
Context.glClear( ( uint )mask );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void ClearColor( float R, float G, float B, float A )
{
Context.glClearColor( R, G, B, A );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void ClearError()
{
uint code = 0;
for( int i = 0; i < 1024; i++ ) {
code = Context.glGetError();
if( code == 0 ) {
return;
}
//Console.WriteLine(code);
}
foreach( ProcessThread thread in Process.GetCurrentProcess().Threads ) {
Debugger.Break();
}
throw new GlErrorOverflowException( 1024, code );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void ClearGraphicError()
{
while( Context.glGetError() != 0 ) { }
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void CombineFrameBufferRenderBuffer(
FrameBufferAttachment attachment,
GlHandle rboHandle )
{
Context.glFramebufferRenderbuffer(
glConst.FRAMEBUFFER, ( uint )attachment, glConst.RENDERBUFFER,
rboHandle.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void CompileShader( GlHandle shaderhandle )
{
Context.glCompileShader( shaderhandle.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe GlHandle CreateGraphicProgram()
{
return GlHandle.Alloc( Context.glCreateProgram() );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public GlHandle CreateProgram()
{
return GlHandle.Alloc( Context.glCreateProgram() );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe GlHandle[] CreateProgram( int count )
{
GlHandle[] h = new GlHandle[count];
for( int i = 0; i < count; i++ ) {
h.SetValue( i, Context.glCreateProgram() );
}
return h;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public GlHandle[] CreateShaderSet( int count, ShaderType type )
{
GlHandle[] ret = new GlHandle[count];
uint t = ( uint )type;
for( int i = 0; i < count; i++ ) {
uint id = Context.glCreateShader( t );
if( id == 0 ) {
uint error = Context.glGetError();
throw new InvalidOperationException(
$"Failed in creating shader: {error}" );
}
ret[ i ] = GlHandle.Alloc( id );
}
return ret;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void DeleteBuffer( GlHandle handle )
{
Context.glDeleteBuffers( 1, ( uint* )&handle );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void DeleteBuffers( GlHandle[] handle )
{
if( ( handle == null ) || ( handle.Length == 0 ) ) {
throw new ArgumentNullException( nameof( handle ) );
}
fixed( GlHandle* hptr = handle ) {
uint* iptr = ( uint* )hptr;
for( int i = 0; i < handle.Length; i++ ) {
Context.glDeleteBuffers( 1, iptr + i );
}
}
}
/// <summary>
/// Delete a render Buffer object Very simlilar function as <see
/// href="https://docs.gl/gl3/glDeleteRenderbuffers">glDeleteRenderbuffers</see>. The only
/// deifference is that this mehtod can only delete one renderbuffer at the same time.
/// </summary>
/// <param _name="bufferHandle"> Handle to Buffer to delete. </param>
public unsafe void DeleteRenderBuffer( GlHandle bufferHandle )
{
Context.glDeleteRenderbuffers( 1, &bufferHandle.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void DeleteVertexArrays( GlHandle[] arrays )
{
fixed( GlHandle* hptr = arrays ) {
uint* iptr = ( uint* )hptr;
for( int i = 0; i < arrays.Length; i++ ) {
Context.glDeleteVertexArrays( 1, iptr + i );
}
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void DrawElements(
GeometryType mode,
uint count,
TypeCode type,
IntPtr ptr )
{
uint a;
a = type switch
{
TypeCode.UInt32 => glConst.UNSIGNED_INT,
TypeCode.UInt16 => glConst.UNSIGNED_SHORT,
TypeCode.Byte => glConst.UNSIGNED_BYTE,
_ => throw new ArgumentException(
$"{$"{$"Parameter error in parameter {nameof(type)} method DrawElements. "}"}{$"{$"Only {typeof(uint).Name},{typeof(ushort).Name},{typeof(byte).Name} types are supported."}"}" )
};
Context.glDrawElements( ( uint )mode, count, a, ( void* )ptr );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void DrawElementsInstanced(
GeometryType mode,
uint count,
TypeCode type,
IntPtr ptr,
uint amount )
{
uint a;
switch( type ) {
case TypeCode.UInt32:
a = glConst.UNSIGNED_INT;
break;
case TypeCode.UInt16:
a = glConst.UNSIGNED_SHORT;
break;
case TypeCode.Byte:
a = glConst.UNSIGNED_BYTE;
break;
default:
InternalIO.InternalWriteLog(
$"{$"Parameter error in parameter {nameof(type)} method DrawElements. "}{$"Only {typeof(uint).Name},{typeof(ushort).Name},{typeof(byte).Name} types are supported."}",
LogType.Error );
return;
}
Context.glDrawElementsInstanced(
( uint )mode, count, a, ( void* )ptr, amount );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void Enable( glOperation operation )
{
Context.glEnable( ( uint )operation );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void FrameBufferTexture2d(
FrameBufferTarget target,
uint attachment,
Texture2DTarget texTarget,
GlHandle textureHandle,
int level )
{
Context.glFramebufferTexture2D(
( uint )target, attachment, ( uint )texTarget,
textureHandle.Value, level );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe GlHandle[] GenBuffers( int count )
{
GlHandle[] h = new GlHandle[count];
fixed( GlHandle* hptr = h ) {
for( int i = 0; i < count; i++ ) {
Context.glGenBuffers( count, ( ( uint* )hptr ) + i );
}
}
return h;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void GenerateMipmap( Texture2DTarget target )
{
Context.glGenerateMipmap( ( uint )target );
}
public unsafe GlHandle[] GenFrameBuffers( int count )
{
GlHandle[] h = new GlHandle[count];
fixed( GlHandle* hptr = h ) {
Context.glGenFramebuffers( 1, ( uint* )hptr );
}
return h;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe GlHandle[] GenRenderBuffer( int count )
{
GlHandle[] h = new GlHandle[count];
fixed( GlHandle* hptr = h ) {
Context.glGenRenderbuffers( count, ( uint* )hptr );
}
return h;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe GlHandle[] GenTextures( int count )
{
GlHandle[] h = new GlHandle[count];
fixed( GlHandle* hptr = h ) {
Context.glGenTextures( count, ( uint* )hptr );
}
return h;
}
public unsafe GlHandle[] GenVertexArrays( int count )
{
GlHandle[] h = new GlHandle[count];
fixed( GlHandle* hptr = h ) {
Context.glGenVertexArrays( count, ( uint* )hptr );
}
return h;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public uint GetError()
{
return Context.glGetError();
}
public unsafe int GetMaskInteger( uint statusCode )
{
int ret = 0;
Context.glGetIntegerv( statusCode, &ret );
return ret;
}
public string GetShaderStatus( Shader s, int index, int key )
{
IntPtr sptr = IntPtr.Zero;
if( InternalIO.glCheckShaderStatus(
ref Context, s.handle[ index ].Value, key, ref sptr ) ==
0 ) {
return Marshal.PtrToStringAnsi( sptr );
}
return string.Empty;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void GetTextureImage<T>(
Texture2DTarget target,
int level,
ImageChannel channel,
PixelChannelLayout channelLayout,
T[] dataStream )
where T: struct,INumber<T>
{
#pragma warning disable CS8500
fixed( T* tptr = dataStream ) {
Context.glGetTexImage(
( uint )target, level, ( uint )channel,
( uint )channelLayout, tptr );
}
#pragma warning restore CS8500
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void GetTextureLevelProperty(
uint textureTypeMask,
int level,
uint propertyMask,
out int propertyValue )
{
fixed( int* iptr = &propertyValue ) {
Context.glGetTexLevelParameteriv(
textureTypeMask, level, propertyMask, iptr );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe GlHandle GetUniformLocation(
GlHandle program,
string name )
{
byte[] code = Encoding.UTF8.GetBytes( name );
fixed( byte* ptr = code ) {
int ret = Context.glGetUniformLocation( program.Value, ptr );
#if DEBUG
if( ( ret == glConst.INVALID_OPERATION ) || ( ret ==
glConst.INVALID_VALUE ) ) {
throw new InvalidOperationException();
}
if( ret == -1 ) {
throw new UniformEmptyReferenceException(
nameof( program ), name );
}
#endif
return GlHandle.SignedAlloc( ret );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void LoadShaderSource(
GlHandle shaderHandle,
byte[] codeStream )
{
fixed( byte* streamPtr = codeStream ) {
Context.glShaderSource(
shaderHandle.Value, 1, &streamPtr, ( void* )0 );
}
}
public unsafe void LoadShaderSource(
GlHandle shaderHandle,
ReadOnlySpan<char> codeStream )
{
fixed( char* streamPtr = codeStream ) {
byte* bptr = ( byte* )streamPtr;
Context.glShaderSource(
shaderHandle.Value, 1, &bptr, ( void* )0 );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void ReadPixels(
(int X, int Y) beginPosition,
(int width, int height) size,
FrameBufferChannel format,
PixelChannelLayout dataType,
ref byte[] stream )
{
fixed( byte* bptr = stream ) {
Context.glReadPixels(
beginPosition.X, beginPosition.Y, size.width, size.height,
( uint )format, ( uint )dataType, bptr );
}
}
public void RereadImage(
in Image i,
(int X, int Y) beginPosition,
FrameBufferChannel format,
PixelChannelLayout dataType )
{
byte[] pixels = i.PixelBuffer;
if( !pixels.CheckArrayFormat( dataType ) ) {
throw new GlArrayFormatException( dataType, "i.PixelArray" );
}
fixed( byte* bptr = pixels ) {
Context.glReadPixels(
beginPosition.X, beginPosition.Y, i.Width, i.Height,
( uint )format, ( uint )dataType, bptr );
}
i.PixelUpdateCount++;
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetBufferData<T>(
BufferType bufferType,
T bufferData,
BufferUsage usage )
where T: struct
{
int size = Marshal.SizeOf<T>();
#pragma warning disable CS8500
T* p = &bufferData;
#pragma warning restore CS8500
Context.glBufferData(
( uint )bufferType, ( IntPtr )size, ( IntPtr )p,
( uint )usage );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetBufferData<T>(
BufferType bufferType,
T[] bufferArray,
BufferUsage usage )
where T: struct,INumber<T>
{
int size = bufferArray.Length * Marshal.SizeOf( typeof( T ) );
if( bufferArray == null ) {
return;
}
#pragma warning disable CS8500
fixed( void* bufferPtr = bufferArray )
#pragma warning restore CS8500
{
Context.glBufferData(
( uint )bufferType, ( IntPtr )size, ( IntPtr )bufferPtr,
( uint )usage );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetBufferData<T>(
BufferType bufferType,
ReadOnlySpan<T> bufferArray,
BufferUsage usage )
where T: struct,INumber<T>
{
int size = bufferArray.Length * Marshal.SizeOf( typeof( T ) );
if( bufferArray == null ) {
return;
}
#pragma warning disable CS8500
fixed( void* bufferPtr = bufferArray )
#pragma warning restore CS8500
{
Context.glBufferData(
( uint )bufferType, ( IntPtr )size, ( IntPtr )bufferPtr,
( uint )usage );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetBufferData<T>(
BufferType bufferType,
Span<T> bufferArray,
BufferUsage usage )
where T: struct, INumber<T>
{
int size = bufferArray.Length * Marshal.SizeOf( typeof( T ) );
if( bufferArray == null ) {
return;
}
#pragma warning disable CS8500
fixed( void* bufferPtr = &bufferArray.GetPinnableReference() )
#pragma warning restore CS8500
{
Context.glBufferData(
( uint )bufferType, ( IntPtr )size, ( IntPtr )bufferPtr,
( uint )usage );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetBufferVectorData<T>(
BufferType bufferType,
ReadOnlySpan<T> bufferArray,
BufferUsage usage )
where T: struct, IVector<T>
{
int size = bufferArray.Length * Marshal.SizeOf( typeof( T ) );
if( bufferArray == null ) {
return;
}
#pragma warning disable CS8500
fixed( void* bufferPtr = &bufferArray.GetPinnableReference() )
#pragma warning restore CS8500
{
Context.glBufferData(
( uint )bufferType, ( IntPtr )size, ( IntPtr )bufferPtr,
( uint )usage );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetBufferVectorData<T>(
BufferType bufferType,
T[] bufferArray,
BufferUsage usage )
where T: struct, IVector<T>
{
int size = bufferArray.Length * Marshal.SizeOf( typeof( T ) );
if( bufferArray == null ) {
return;
}
#pragma warning disable CS8500
fixed( void* bufferPtr = bufferArray )
#pragma warning restore CS8500
{
Context.glBufferData(
( uint )bufferType, ( IntPtr )size, ( IntPtr )bufferPtr,
( uint )usage );
}
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetRenderBufferStorage(
RenderBufferInternalFormat internalFormat,
(int width, int height) size )
{
Context.glRenderbufferStorage(
glConst.RENDERBUFFER, ( uint )internalFormat, size.width,
size.height );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public unsafe void SetRenderBufferStorage(
RenderBufferInternalFormat internalFormat,
(uint width, uint height) size )
{
Context.glRenderbufferStorage(
glConst.RENDERBUFFER, ( uint )internalFormat, ( int )size.width,
( int )size.height );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void SetVertexAttribute(
uint index,
int size,
TypeCode t,
bool normalized,
uint stride,
int pointer )
{
uint type = InternalIO.GLtype[ t ];
Context.glVertexAttribPointer(
index, size, type, normalized ? 1 : 0, stride,
( void* )pointer );
Context.glEnableVertexAttribArray( index );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void TextureImage2d<T>(
Texture2DTarget target,
int level,
ImageChannel sourceChannel,
uint width,
uint height,
ImageChannel targetChannel,
PixelChannelLayout type,
T[] pixels )
where T: struct, INumber<T>
{
#pragma warning disable CS8500
fixed( T* tptr = pixels ) {
T* ptr = ( ( pixels == null ) || ( pixels.Length == 0 ) ) ?
( T* )IntPtr.Zero : tptr;
Context.glTexImage2D(
( uint )target, level, ( uint )sourceChannel, width, height,
0, ( uint )targetChannel, ( uint )type, tptr );
}
#pragma warning restore CS8500
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void TextureImage2d<T>(
Texture2DTarget target,
int level,
ImageChannel sourceChannel,
uint width,
uint height,
ImageChannel targetChannel,
PixelChannelLayout type,
Span<T> pixelSpan )
where T: struct, INumber<T>
{
#pragma warning disable CS8500
fixed( T* tptr = pixelSpan ) {
Context.glTexImage2D(
( uint )target, level, ( uint )sourceChannel, width, height,
0, ( uint )targetChannel, ( uint )type, tptr );
}
#pragma warning restore CS8500
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void TextureParameter( int target, uint pname, int param )
{
Context.glTexParameteri( ( uint )target, pname, param );
}
public static bool TryGetFunctionPackage(
IntPtr handle,
out OpenGLFunction functionPackage )
{
return contextToGLMap.TryGetValue( handle, out functionPackage );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void UseProgram( GlHandle program )
{
Context.glUseProgram( program.Value );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void VertexAttributeDivisor( uint layoutIndex, uint divisor )
{
Context.glVertexAttribDivisor( layoutIndex, divisor );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public void Viewport( int x, int y, uint width, uint height )
{
Context.glViewport( x, y, width, height );
}
public void WaitAccomplishment()
{
Context.glFinish();
}
internal static OpenGLFunction BuildGlFunctionPackage( IntPtr handle )
{
OpenGLFunction pack;
if( contextToGLMap.TryGetValue( handle, out pack ) ) {
return pack;
}
pack = new OpenGLFunction { _context = ( OpenglContext* )handle };
contextToGLMap.Add( handle, pack );
return pack;
}
~OpenGLFunction()
{
contextToGLMap.Remove( ContextHandle );
}
}
}