/// <summary>
/// Creates the underlying native OpenGL texture with the specified format and data.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="internalformat">The texture's internal format.</param>
/// <param name="width">The texture's width in pixels.</param>
/// <param name="height">The texture's height in pixels.</param>
/// <param name="format">The texel format.</param>
/// <param name="type">The texel data type.</param>
/// <param name="pixels">A pointer to the beginning of the texture's pixel data.</param>
/// <param name="immutable">A value indicating whether to use immutable texture storage.</param>
private void CreateNativeTexture(UltravioletContext uv, UInt32 internalformat, Int32 width, Int32 height, UInt32 format, UInt32 type, void *pixels, Boolean immutable)
{
if (uv.IsRunningInServiceMode)
{
throw new NotSupportedException(UltravioletStrings.NotSupportedInServiceMode);
}
this.width = width;
this.height = height;
this.internalformat = internalformat;
this.format = format;
this.type = type;
this.immutable = immutable;
this.srgbEncoded =
internalformat == gl.GL_SRGB ||
internalformat == gl.GL_SRGB_ALPHA ||
internalformat == gl.GL_SRGB8 ||
internalformat == gl.GL_SRGB8_ALPHA8;
this.texture = uv.QueueWorkItem(state =>
{
uint glname;
using (OpenGLState.ScopedCreateTexture2D(out glname))
{
if (gl.IsTextureMaxLevelSupported)
{
gl.TextureParameteri(glname, gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAX_LEVEL, 0);
gl.ThrowIfError();
}
gl.TextureParameteri(glname, gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
if (immutable)
{
if (gl.IsTextureStorageAvailable)
{
gl.TextureStorage2D(glname, gl.GL_TEXTURE_2D, 1, internalformat, width, height);
gl.ThrowIfError();
if (pixels != null)
{
gl.TextureSubImage2D(glname, gl.GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, pixels);
gl.ThrowIfError();
}
}
else
{
gl.TextureImage2D(glname, gl.GL_TEXTURE_2D, 0, (int)internalformat, width, height, 0, format, type, pixels);
gl.ThrowIfError();
}
}
}
if (!immutable)
{
using (OpenGLState.ScopedBindTexture2D(glname, true))
{
gl.TexImage2D(gl.GL_TEXTURE_2D, 0, (int)internalformat, width, height, 0, format, type, pixels);
gl.ThrowIfError();
}
}
return(glname);
}).Result;
}