/// <summary>
/// Link GLBuffer to existing OpenGL image. Used
/// to provide debug information in the debug view.
/// </summary>
/// <param name="name"></param>
/// <param name="anno"></param>
/// <param name="glname">OpenGL object to like to.</param>
public GLImage(string name, string anno, int glname) : base(name, anno)
{
int f, t;
this.glname = glname;
this.Size = Enumerable.Repeat(1, 4).ToArray();
GL.GetTextureParameter(glname, TexParameter.TextureTarget, out t);
GL.GetTextureLevelParameter(glname, 0, TexParameter.TextureInternalFormat, out f);
GL.GetTextureLevelParameter(glname, 0, TexParameter.TextureWidth, out Size[0]);
GL.GetTextureLevelParameter(glname, 0, TexParameter.TextureHeight, out Size[1]);
GL.GetTextureLevelParameter(glname, 0, TexParameter.TextureDepth, out Size[2]);
Type = (TexTarget)t;
Format = (GpuFormat)f;
if (Type != TexTarget.Texture3D)
{
Size[3] = Size[2];
Size[2] = 1;
}
}
/// <summary>
/// Allocate image memory and fill it with the specified data.
/// </summary>
/// <param name="target">texture target</param>
/// <param name="width">texture width</param>
/// <param name="height">texture height</param>
/// <param name="depth">number of texture layers</param>
/// <param name="length">number of texture layers</param>
/// <param name="format">pixel format of the data to be uploaded</param>
/// <param name="type">pixel type of the data to be uploaded</param>
/// <param name="pixels">pixel data</param>
private void TexImage(TexTarget target, int width, int height, int depth, int length,
PixelFormat format, PixelType type, IntPtr pixels)
{
var colFormat = (GpuColorFormat)GpuFormat;
switch (target)
{
case TexTarget.Texture1D:
GL.TexImage1D(target, 0, colFormat, width, 0, format, type, pixels);
break;
case TexTarget.Texture1DArray:
GL.TexImage2D(target, 0, colFormat, width, length, 0, format, type, pixels);
break;
case TexTarget.Texture2D:
GL.TexImage2D(target, 0, colFormat, width, height, 0, format, type, pixels);
break;
case TexTarget.Texture2DArray:
GL.TexImage3D(target, 0, colFormat, width, height, length, 0, format, type, pixels);
break;
case TexTarget.Texture3D:
GL.TexImage3D(target, 0, colFormat, width, height, depth, 0, format, type, pixels);
break;
}
}
/// <summary>
/// Allocate image memory.
/// </summary>
/// <param name="target">texture target</param>
/// <param name="width">texture width</param>
/// <param name="height">texture height</param>
/// <param name="depth">number of texture layers</param>
/// <param name="length">number of texture layers</param>
/// <param name="levels">number of mipmap layers</param>
private void TexImage(TexTarget target, int width, int height, int depth, int length, int levels)
{
levels = levels <= 0 ? MaxMipmapLevels(width, height) : 1;
var colFormat = (SizedInternalFormat)GpuFormat;
switch (target)
{
case TexTarget.Texture1D:
GL.TexStorage1D((TextureTarget1d)target, levels, colFormat, width);
break;
case TexTarget.Texture1DArray:
GL.TexStorage2D((TextureTarget2d)target, levels, colFormat, width, height);
break;
case TexTarget.Texture2D:
GL.TexStorage2D((TextureTarget2d)target, levels, colFormat, width, height);
break;
case TexTarget.Texture2DArray:
GL.TexStorage3D((TextureTarget3d)target, levels, colFormat, width, height, length);
break;
case TexTarget.Texture3D:
GL.TexStorage3D((TextureTarget3d)target, levels, colFormat, width, height, depth);
break;
}
}
