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OpenGLConvertExtensions.cs
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OpenGLConvertExtensions.cs
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// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net) and Silicon Studio Corp. (https://www.siliconstudio.co.jp)
// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
#if STRIDE_GRAPHICS_API_OPENGL
using System;
namespace Stride.Graphics
{
internal static class OpenGLConvertExtensions
{
public static PrimitiveTypeGl ToOpenGL(this PrimitiveType primitiveType)
{
switch (primitiveType)
{
case PrimitiveType.PointList:
return PrimitiveTypeGl.Points;
case PrimitiveType.LineList:
return PrimitiveTypeGl.Lines;
case PrimitiveType.LineStrip:
return PrimitiveTypeGl.LineStrip;
case PrimitiveType.TriangleList:
return PrimitiveTypeGl.Triangles;
case PrimitiveType.TriangleStrip:
return PrimitiveTypeGl.TriangleStrip;
default:
// Undefined
return PrimitiveTypeGl.Triangles;
}
}
public static MapBufferAccessMask ToOpenGLMask(this MapMode mapMode)
{
switch (mapMode)
{
case MapMode.Read:
return MapBufferAccessMask.MapReadBit;
case MapMode.Write:
return MapBufferAccessMask.MapWriteBit;
case MapMode.ReadWrite:
return MapBufferAccessMask.MapReadBit | MapBufferAccessMask.MapWriteBit;
case MapMode.WriteDiscard:
return MapBufferAccessMask.MapWriteBit | MapBufferAccessMask.MapInvalidateBufferBit;
case MapMode.WriteNoOverwrite:
return MapBufferAccessMask.MapWriteBit | MapBufferAccessMask.MapUnsynchronizedBit;
default:
throw new ArgumentOutOfRangeException("mapMode");
}
}
#if STRIDE_GRAPHICS_API_OPENGLES
public static PrimitiveTypeGl ToOpenGLES(this PrimitiveType primitiveType)
{
switch (primitiveType)
{
case PrimitiveType.PointList:
return PrimitiveTypeGl.Points;
case PrimitiveType.LineList:
return PrimitiveTypeGl.Lines;
case PrimitiveType.LineStrip:
return PrimitiveTypeGl.LineStrip;
case PrimitiveType.TriangleList:
return PrimitiveTypeGl.Triangles;
case PrimitiveType.TriangleStrip:
return PrimitiveTypeGl.TriangleStrip;
default:
throw new NotImplementedException();
}
}
#else
public static BufferAccessARB ToOpenGL(this MapMode mapMode)
{
switch (mapMode)
{
case MapMode.Read:
return BufferAccessARB.ReadOnly;
case MapMode.Write:
case MapMode.WriteDiscard:
case MapMode.WriteNoOverwrite:
return BufferAccessARB.WriteOnly;
case MapMode.ReadWrite:
return BufferAccessARB.ReadWrite;
default:
throw new ArgumentOutOfRangeException("mapMode");
}
}
#endif
public static TextureWrapMode ToOpenGL(this TextureAddressMode addressMode)
{
switch (addressMode)
{
case TextureAddressMode.Border:
return TextureWrapMode.ClampToBorder;
case TextureAddressMode.Clamp:
return TextureWrapMode.ClampToEdge;
case TextureAddressMode.Mirror:
return TextureWrapMode.MirroredRepeat;
case TextureAddressMode.Wrap:
return TextureWrapMode.Repeat;
default:
throw new NotImplementedException();
}
}
public static DepthFunction ToOpenGLDepthFunction(this CompareFunction function)
{
switch (function)
{
case CompareFunction.Always:
return DepthFunction.Always;
case CompareFunction.Equal:
return DepthFunction.Equal;
case CompareFunction.GreaterEqual:
return DepthFunction.Gequal;
case CompareFunction.Greater:
return DepthFunction.Greater;
case CompareFunction.LessEqual:
return DepthFunction.Lequal;
case CompareFunction.Less:
return DepthFunction.Less;
case CompareFunction.Never:
return DepthFunction.Never;
case CompareFunction.NotEqual:
return DepthFunction.Notequal;
default:
throw new NotImplementedException();
}
}
public static StencilFunction ToOpenGLStencilFunction(this CompareFunction function)
{
switch (function)
{
case CompareFunction.Always:
return StencilFunction.Always;
case CompareFunction.Equal:
return StencilFunction.Equal;
case CompareFunction.GreaterEqual:
return StencilFunction.Gequal;
case CompareFunction.Greater:
return StencilFunction.Greater;
case CompareFunction.LessEqual:
return StencilFunction.Lequal;
case CompareFunction.Less:
return StencilFunction.Less;
case CompareFunction.Never:
return StencilFunction.Never;
case CompareFunction.NotEqual:
return StencilFunction.Notequal;
default:
throw new NotImplementedException();
}
}
public static StencilOp ToOpenGL(this StencilOperation operation)
{
switch (operation)
{
case StencilOperation.Keep:
return StencilOp.Keep;
case StencilOperation.Zero:
return StencilOp.Zero;
case StencilOperation.Replace:
return StencilOp.Replace;
case StencilOperation.IncrementSaturation:
return StencilOp.Incr;
case StencilOperation.DecrementSaturation:
return StencilOp.Decr;
case StencilOperation.Invert:
return StencilOp.Invert;
case StencilOperation.Increment:
return StencilOp.IncrWrap;
case StencilOperation.Decrement:
return StencilOp.DecrWrap;
default:
throw new ArgumentOutOfRangeException("operation");
}
}
public static void ConvertPixelFormat(GraphicsDevice graphicsDevice, ref PixelFormat inputFormat, out InternalFormat internalFormat, out PixelFormatGl format, out PixelType type,
out int pixelSize, out bool compressed)
{
compressed = false;
// If the Device doesn't support SRGB, we remap automatically the format to non-srgb
if (!graphicsDevice.Features.HasSRgb)
{
switch (inputFormat)
{
case PixelFormat.ETC2_RGB_SRgb:
inputFormat = PixelFormat.ETC2_RGB;
break;
case PixelFormat.ETC2_RGBA_SRgb:
inputFormat = PixelFormat.ETC2_RGBA;
break;
case PixelFormat.R8G8B8A8_UNorm_SRgb:
inputFormat = PixelFormat.R8G8B8A8_UNorm;
break;
case PixelFormat.B8G8R8A8_UNorm_SRgb:
inputFormat = PixelFormat.B8G8R8A8_UNorm;
break;
}
}
switch (inputFormat)
{
case PixelFormat.A8_UNorm:
internalFormat = (InternalFormat)GLEnum.Alpha;
format = PixelFormatGl.Alpha;
type = PixelType.UnsignedByte;
pixelSize = 1;
break;
case PixelFormat.R8_UNorm:
internalFormat = InternalFormat.R8;
format = PixelFormatGl.Red;
type = PixelType.UnsignedByte;
pixelSize = 1;
break;
case PixelFormat.R8G8B8A8_UNorm:
internalFormat = InternalFormat.Rgba;
format = PixelFormatGl.Rgba;
type = PixelType.UnsignedByte;
pixelSize = 4;
break;
case PixelFormat.B8G8R8A8_UNorm:
if (!graphicsDevice.HasExtTextureFormatBGRA8888)
throw new NotSupportedException();
internalFormat = (InternalFormat)PixelFormatGl.Bgra;
format = PixelFormatGl.Bgra;
type = PixelType.UnsignedByte;
pixelSize = 4;
break;
case PixelFormat.R8G8B8A8_UNorm_SRgb:
internalFormat = InternalFormat.Srgb8Alpha8;
format = PixelFormatGl.Rgba;
type = PixelType.UnsignedByte;
pixelSize = 4;
break;
#if STRIDE_GRAPHICS_API_OPENGLCORE
case PixelFormat.B8G8R8A8_UNorm_SRgb:
// TODO: Check on iOS/Android and OpenGL 3
internalFormat = InternalFormat.Srgb8Alpha8;
format = PixelFormatGl.Bgra;
type = PixelType.UnsignedByte;
pixelSize = 4;
break;
case PixelFormat.BC1_UNorm:
if (!graphicsDevice.HasDXT)
throw new NotSupportedException();
internalFormat = InternalFormat.CompressedRgbaS3TCDxt1Ext;
format = PixelFormatGl.Rgb;
pixelSize = 4;
type = PixelType.UnsignedByte;
compressed = true;
break;
case PixelFormat.BC1_UNorm_SRgb:
if (!graphicsDevice.HasDXT)
throw new NotSupportedException();
internalFormat = InternalFormat.CompressedSrgbAlphaS3TCDxt1Ext;
format = PixelFormatGl.Rgb;
pixelSize = 4;
type = PixelType.UnsignedByte;
compressed = true;
break;
case PixelFormat.BC2_UNorm:
if (!graphicsDevice.HasDXT)
throw new NotSupportedException();
internalFormat = InternalFormat.CompressedRgbaS3TCDxt3Ext;
format = PixelFormatGl.Rgba;
pixelSize = 4;
type = PixelType.UnsignedByte;
compressed = true;
break;
case PixelFormat.BC2_UNorm_SRgb:
if (!graphicsDevice.HasDXT)
throw new NotSupportedException();
internalFormat = InternalFormat.CompressedSrgbAlphaS3TCDxt3Ext;
format = PixelFormatGl.Rgba;
pixelSize = 4;
type = PixelType.UnsignedByte;
compressed = true;
break;
case PixelFormat.BC3_UNorm:
if (!graphicsDevice.HasDXT)
throw new NotSupportedException();
internalFormat = InternalFormat.CompressedRgbaS3TCDxt5Ext;
format = PixelFormatGl.Rgba;
pixelSize = 4;
type = PixelType.UnsignedByte;
compressed = true;
break;
case PixelFormat.BC3_UNorm_SRgb:
if (!graphicsDevice.HasDXT)
throw new NotSupportedException();
internalFormat = InternalFormat.CompressedSrgbAlphaS3TCDxt5Ext;
format = PixelFormatGl.Rgba;
pixelSize = 4;
type = PixelType.UnsignedByte;
compressed = true;
break;
#endif
case PixelFormat.R16_SInt:
internalFormat = InternalFormat.R16i;
format = PixelFormatGl.RedInteger;
type = PixelType.Short;
pixelSize = 2;
break;
case PixelFormat.R16_UInt:
internalFormat = InternalFormat.R16ui;
format = PixelFormatGl.RedInteger;
type = PixelType.UnsignedShort;
pixelSize = 2;
break;
case PixelFormat.R16_Float:
internalFormat = InternalFormat.R16f;
format = PixelFormatGl.Red;
type = (PixelType)GLEnum.HalfFloat;
pixelSize = 2;
break;
case PixelFormat.R16G16_SInt:
internalFormat = InternalFormat.RG16i;
format = PixelFormatGl.RGInteger;
type = PixelType.Short;
pixelSize = 4;
break;
case PixelFormat.R16G16_UInt:
internalFormat = InternalFormat.RG16ui;
format = PixelFormatGl.RGInteger;
type = PixelType.UnsignedShort;
pixelSize = 4;
break;
case PixelFormat.R16G16_Float:
internalFormat = InternalFormat.RG16f;
format = PixelFormatGl.RG;
type = (PixelType)GLEnum.HalfFloat;
pixelSize = 4;
break;
case PixelFormat.R16G16B16A16_SInt:
internalFormat = InternalFormat.Rgba16i;
format = PixelFormatGl.RgbaInteger;
type = PixelType.Short;
pixelSize = 8;
break;
case PixelFormat.R16G16B16A16_UInt:
internalFormat = InternalFormat.Rgba16ui;
format = PixelFormatGl.RgbaInteger;
type = PixelType.UnsignedShort;
pixelSize = 8;
break;
case PixelFormat.R16G16B16A16_Float:
internalFormat = InternalFormat.Rgba16f;
format = PixelFormatGl.Rgba;
type = (PixelType)GLEnum.HalfFloat;
pixelSize = 8;
break;
case PixelFormat.R10G10B10A2_UNorm:
internalFormat = InternalFormat.Rgb10A2;
format = PixelFormatGl.Rgba;
type = PixelType.UnsignedInt1010102;
pixelSize = 4;
break;
case PixelFormat.R11G11B10_Float:
internalFormat = InternalFormat.R11fG11fB10f;
format = PixelFormatGl.Rgb;
type = (PixelType)GLEnum.HalfFloat;
pixelSize = 4;
break;
case PixelFormat.R32_SInt:
internalFormat = InternalFormat.R32i;
format = PixelFormatGl.RedInteger;
type = PixelType.Int;
pixelSize = 4;
break;
case PixelFormat.R32_UInt:
internalFormat = InternalFormat.R32ui;
format = PixelFormatGl.RedInteger;
type = PixelType.UnsignedInt;
pixelSize = 4;
break;
case PixelFormat.R32_Float:
internalFormat = InternalFormat.R32f;
format = PixelFormatGl.Red;
type = PixelType.Float;
pixelSize = 4;
break;
case PixelFormat.R32G32_SInt:
internalFormat = InternalFormat.RG32i;
format = PixelFormatGl.RGInteger;
type = PixelType.Int;
pixelSize = 8;
break;
case PixelFormat.R32G32_UInt:
internalFormat = InternalFormat.RG32ui;
format = PixelFormatGl.RGInteger;
type = PixelType.UnsignedInt;
pixelSize = 8;
break;
case PixelFormat.R32G32_Float:
internalFormat = InternalFormat.RG32f;
format = PixelFormatGl.RG;
type = PixelType.Float;
pixelSize = 8;
break;
case PixelFormat.R32G32B32_SInt:
internalFormat = InternalFormat.Rgb32i;
format = PixelFormatGl.RgbInteger;
type = PixelType.Int;
pixelSize = 12;
break;
case PixelFormat.R32G32B32_UInt:
internalFormat = InternalFormat.Rgb32ui;
format = PixelFormatGl.RgbInteger;
type = PixelType.UnsignedInt;
pixelSize = 12;
break;
case PixelFormat.R32G32B32_Float:
internalFormat = InternalFormat.Rgb32f;
format = PixelFormatGl.Rgb;
type = PixelType.Float;
pixelSize = 12;
break;
case PixelFormat.R32G32B32A32_SInt:
internalFormat = InternalFormat.Rgba32i;
format = PixelFormatGl.RgbaInteger;
type = PixelType.Int;
pixelSize = 16;
break;
case PixelFormat.R32G32B32A32_UInt:
internalFormat = InternalFormat.Rgba32ui;
format = PixelFormatGl.RgbaInteger;
type = PixelType.UnsignedInt;
pixelSize = 16;
break;
case PixelFormat.R32G32B32A32_Float:
internalFormat = InternalFormat.Rgba32f;
format = PixelFormatGl.Rgba;
type = PixelType.Float;
pixelSize = 16;
break;
case PixelFormat.D16_UNorm:
internalFormat = InternalFormat.DepthComponent16;
format = PixelFormatGl.DepthComponent;
type = PixelType.UnsignedShort;
pixelSize = 2;
break;
case PixelFormat.D24_UNorm_S8_UInt:
internalFormat = InternalFormat.Depth24Stencil8;
format = PixelFormatGl.DepthStencil;
type = (PixelType)GLEnum.UnsignedInt248;
pixelSize = 4;
break;
// TODO: Temporary depth format (need to decide relation between RenderTarget1D and Texture)
case PixelFormat.D32_Float:
internalFormat = InternalFormat.DepthComponent32f;
format = PixelFormatGl.DepthComponent;
type = PixelType.Float;
pixelSize = 4;
break;
#if STRIDE_GRAPHICS_API_OPENGLES
// Desktop OpenGLES
case PixelFormat.ETC1:
// TODO: Runtime check for extension?
internalFormat = InternalFormat.Etc1Rgb8Oes;
format = PixelFormatGl.Rgb;
compressed = true;
pixelSize = 2;
type = PixelType.UnsignedByte;
break;
case PixelFormat.ETC2_RGBA:
internalFormat = InternalFormat.CompressedRgba8Etc2Eac;
format = PixelFormatGl.Rgba;
compressed = true;
pixelSize = 2;
type = PixelType.UnsignedByte;
break;
case PixelFormat.ETC2_RGBA_SRgb:
internalFormat = InternalFormat.CompressedSrgb8Alpha8Etc2Eac;
format = PixelFormatGl.Rgba;
compressed = true;
pixelSize = 2;
type = PixelType.UnsignedByte;
break;
#endif
case PixelFormat.None: // TODO: remove this - this is only for buffers used in compute shaders
internalFormat = InternalFormat.Rgba;
format = PixelFormatGl.Red;
type = PixelType.UnsignedByte;
pixelSize = 1;
break;
default:
throw new InvalidOperationException("Unsupported texture format: " + inputFormat);
}
}
}
}
#endif