248 lines
8.3 KiB
C#
248 lines
8.3 KiB
C#
using System;
|
|
using System.Runtime.InteropServices;
|
|
using ANX.Framework.Graphics;
|
|
using ANX.Framework.NonXNA.RenderSystem;
|
|
using OpenTK.Graphics.OpenGL;
|
|
|
|
#region License
|
|
|
|
//
|
|
// This file is part of the ANX.Framework created by the "ANX.Framework developer group".
|
|
//
|
|
// This file is released under the Ms-PL license.
|
|
//
|
|
//
|
|
//
|
|
// Microsoft Public License (Ms-PL)
|
|
//
|
|
// This license governs use of the accompanying software. If you use the software, you accept this license.
|
|
// If you do not accept the license, do not use the software.
|
|
//
|
|
// 1.Definitions
|
|
// The terms "reproduce," "reproduction," "derivative works," and "distribution" have the same meaning
|
|
// here as under U.S. copyright law.
|
|
// A "contribution" is the original software, or any additions or changes to the software.
|
|
// A "contributor" is any person that distributes its contribution under this license.
|
|
// "Licensed patents" are a contributor's patent claims that read directly on its contribution.
|
|
//
|
|
// 2.Grant of Rights
|
|
// (A) Copyright Grant- Subject to the terms of this license, including the license conditions and limitations
|
|
// in section 3, each contributor grants you a non-exclusive, worldwide, royalty-free copyright license to
|
|
// reproduce its contribution, prepare derivative works of its contribution, and distribute its contribution
|
|
// or any derivative works that you create.
|
|
// (B) Patent Grant- Subject to the terms of this license, including the license conditions and limitations in
|
|
// section 3, each contributor grants you a non-exclusive, worldwide, royalty-free license under its licensed
|
|
// patents to make, have made, use, sell, offer for sale, import, and/or otherwise dispose of its contribution
|
|
// in the software or derivative works of the contribution in the software.
|
|
//
|
|
// 3.Conditions and Limitations
|
|
// (A) No Trademark License- This license does not grant you rights to use any contributors' name, logo, or trademarks.
|
|
// (B) If you bring a patent claim against any contributor over patents that you claim are infringed by the software, your
|
|
// patent license from such contributor to the software ends automatically.
|
|
// (C) If you distribute any portion of the software, you must retain all copyright, patent, trademark, and attribution
|
|
// notices that are present in the software.
|
|
// (D) If you distribute any portion of the software in source code form, you may do so only under this license by including
|
|
// a complete copy of this license with your distribution. If you distribute any portion of the software in compiled or
|
|
// object code form, you may only do so under a license that complies with this license.
|
|
// (E) The software is licensed "as-is." You bear the risk of using it. The contributors give no express warranties, guarantees,
|
|
// or conditions. You may have additional consumer rights under your local laws which this license cannot change. To the
|
|
// extent permitted under your local laws, the contributors exclude the implied warranties of merchantability, fitness for a
|
|
// particular purpose and non-infringement.
|
|
|
|
#endregion // License
|
|
|
|
namespace ANX.Framework.Windows.GL3
|
|
{
|
|
/// <summary>
|
|
/// Native OpenGL Texture implementation.
|
|
/// </summary>
|
|
public class Texture2DGL3 : INativeTexture2D
|
|
{
|
|
#region Private
|
|
/// <summary>
|
|
/// The native OpenGL pixel format of the texture.
|
|
/// </summary>
|
|
private PixelInternalFormat nativeFormat;
|
|
|
|
/// <summary>
|
|
/// The number of mipmaps used by this texture [1-n].
|
|
/// </summary>
|
|
private int numberOfMipMaps;
|
|
|
|
/// <summary>
|
|
/// Width of the texture.
|
|
/// </summary>
|
|
private int width;
|
|
|
|
/// <summary>
|
|
/// Height of the texture.
|
|
/// </summary>
|
|
private int height;
|
|
|
|
/// <summary>
|
|
/// Flag if the texture is a compressed format or not.
|
|
/// </summary>
|
|
private bool isCompressed;
|
|
#endregion
|
|
|
|
#region Public
|
|
/// <summary>
|
|
/// The OpenGL texture handle.
|
|
/// </summary>
|
|
internal int NativeHandle
|
|
{
|
|
get;
|
|
private set;
|
|
}
|
|
#endregion
|
|
|
|
#region Constructor
|
|
/// <summary>
|
|
/// Create a new native OpenGL texture.
|
|
/// </summary>
|
|
/// <param name="surfaceFormat">Surface format of the texture.</param>
|
|
/// <param name="setWidth">Width of the first mip level.</param>
|
|
/// <param name="setHeight">Height of the first mip level.</param>
|
|
/// <param name="mipCount">Number of mip levels [1-n].</param>
|
|
internal Texture2DGL3(SurfaceFormat surfaceFormat, int setWidth,
|
|
int setHeight, int mipCount)
|
|
{
|
|
width = setWidth;
|
|
height = setHeight;
|
|
numberOfMipMaps = mipCount;
|
|
nativeFormat =
|
|
DatatypesMapping.SurfaceToPixelInternalFormat(surfaceFormat);
|
|
isCompressed = nativeFormat.ToString().StartsWith("Compressed");
|
|
|
|
NativeHandle = GL.GenTexture();
|
|
#if DEBUG
|
|
ErrorHelper.Check("GenTexture");
|
|
#endif
|
|
GL.BindTexture(TextureTarget.Texture2D, NativeHandle);
|
|
#if DEBUG
|
|
ErrorHelper.Check("BindTexture");
|
|
#endif
|
|
|
|
int wrapMode = (int)All.ClampToEdge;
|
|
int filter = (int)(mipCount > 1 ? All.LinearMipmapLinear : All.Linear);
|
|
|
|
GL.TexParameter(TextureTarget.Texture2D,
|
|
TextureParameterName.TextureWrapS, wrapMode);
|
|
GL.TexParameter(TextureTarget.Texture2D,
|
|
TextureParameterName.TextureWrapT, wrapMode);
|
|
GL.TexParameter(TextureTarget.Texture2D,
|
|
TextureParameterName.TextureMagFilter, filter);
|
|
GL.TexParameter(TextureTarget.Texture2D,
|
|
TextureParameterName.TextureMinFilter, filter);
|
|
#if DEBUG
|
|
ErrorHelper.Check("TexParameter");
|
|
#endif
|
|
}
|
|
#endregion
|
|
|
|
// TODO: offsetInBytes
|
|
// TODO: elementCount
|
|
// TODO: get size of first mipmap!
|
|
#region SetData
|
|
public void SetData<T>(GraphicsDevice graphicsDevice, T[] data)
|
|
where T : struct
|
|
{
|
|
SetData<T>(graphicsDevice, data, 0, data.Length);
|
|
}
|
|
|
|
public void SetData<T>(GraphicsDevice graphicsDevice, T[] data,
|
|
int startIndex, int elementCount) where T : struct
|
|
{
|
|
SetData<T>(graphicsDevice, 0, data, 0, data.Length);
|
|
}
|
|
|
|
public void SetData<T>(GraphicsDevice graphicsDevice, int offsetInBytes,
|
|
T[] data, int startIndex, int elementCount) where T : struct
|
|
{
|
|
if (numberOfMipMaps > 1)
|
|
{
|
|
throw new NotImplementedException(
|
|
"Loading mipmaps is not correctly implemented yet!");
|
|
}
|
|
|
|
GCHandle handle = GCHandle.Alloc(data, GCHandleType.Pinned);
|
|
|
|
// TODO: get size of first mipmap!
|
|
int mipmapByteSize = data.Length;
|
|
|
|
try
|
|
{
|
|
IntPtr dataPointer = handle.AddrOfPinnedObject();
|
|
// Go to the starting point.
|
|
dataPointer += startIndex;
|
|
|
|
if (isCompressed)
|
|
{
|
|
GL.CompressedTexImage2D(TextureTarget.Texture2D, 0, nativeFormat,
|
|
width, height, 0, mipmapByteSize, dataPointer);
|
|
#if DEBUG
|
|
ErrorHelper.Check("CompressedTexImage2D Format=" + nativeFormat);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
GL.TexImage2D(TextureTarget.Texture2D, 0, nativeFormat,
|
|
width, height, 0, (PixelFormat)nativeFormat,
|
|
PixelType.UnsignedByte, dataPointer);
|
|
#if DEBUG
|
|
ErrorHelper.Check("TexImage2D Format=" + nativeFormat);
|
|
#endif
|
|
}
|
|
|
|
int mipmapWidth = width;
|
|
int mipmapHeight = height;
|
|
for (int index = 1; index < numberOfMipMaps; index++)
|
|
{
|
|
dataPointer += mipmapByteSize;
|
|
mipmapByteSize /= 4;
|
|
mipmapWidth /= 2;
|
|
mipmapHeight /= 2;
|
|
mipmapWidth = Math.Max(mipmapWidth, 1);
|
|
mipmapHeight = Math.Max(mipmapHeight, 1);
|
|
|
|
if (isCompressed)
|
|
{
|
|
GL.CompressedTexImage2D(TextureTarget.Texture2D, index,
|
|
nativeFormat, width, height, 0, mipmapByteSize, dataPointer);
|
|
#if DEBUG
|
|
ErrorHelper.Check("CompressedTexImage2D Format=" + nativeFormat);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
GL.TexImage2D(TextureTarget.Texture2D, index, nativeFormat,
|
|
mipmapWidth, mipmapHeight, 0, (PixelFormat)nativeFormat,
|
|
PixelType.UnsignedByte, dataPointer);
|
|
#if DEBUG
|
|
ErrorHelper.Check("TexImage2D Format=" + nativeFormat);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
handle.Free();
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region Dispose
|
|
/// <summary>
|
|
/// Dispose the native OpenGL texture handle.
|
|
/// </summary>
|
|
public void Dispose()
|
|
{
|
|
GL.DeleteTexture(NativeHandle);
|
|
#if DEBUG
|
|
ErrorHelper.Check("DeleteTexture");
|
|
#endif
|
|
}
|
|
#endregion
|
|
}
|
|
}
|