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//
// Mono.Cairo.GLSurface.cs
//
// Authors:
// JP Bruyère (jp_bruyere@hotmail.com)
//
// This is an OO wrapper API for the Cairo API
//
// Copyright (C) 2016 JP Bruyère
//
// 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 System;
#if CAIRO_HAS_GL
using OpenGL;
using static OpenGL.Gl;
namespace Crow.CairoBackend {
public class GLTextureSurface : Surface
{
uint texId;
internal GLTextureSurface (CairoDevice device, int width, int height)
: base ()
{
texId = GenTexture ();
BindTexture (TextureTarget.Texture2d, texId);
TexImage2D (TextureTarget.Texture2d, 0, InternalFormat.Rgb, width, height,
0, PixelFormat.Rgb, PixelType.UnsignedByte, 0);
TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureMagFilter, NEAREST);
TexParameteri(TextureTarget.Texture2d, TextureParameterName.TextureMinFilter, NEAREST);
handle = NativeMethods.cairo_gl_surface_create_for_texture (device.Handle,
(uint)Content.ColorAlpha, texId, width, height);
}
protected override void Dispose (bool disposing)
{
if (disposing && handle != IntPtr.Zero)
OpenGL.Gl.DeleteTextures (texId);
base.Dispose (disposing);
}
}
public class GLSurface : Surface
{
public GLSurface (IntPtr ptr, bool own) : base (ptr, own)
{}
public GLSurface (CairoDevice device, Content content, uint tex, int width, int height)
: base (NativeMethods.cairo_gl_surface_create_for_texture (device.Handle, (uint)content, tex, width, height), true)
{}
public GLSurface (EGLDevice device, IntPtr eglSurf, int width, int height)
: base (NativeMethods.cairo_gl_surface_create_for_egl (device.Handle, eglSurf, width, height), true)
{}
public GLSurface (GLXDevice device, IntPtr window, int width, int height)
: base (NativeMethods.cairo_gl_surface_create_for_window (device.Handle, window, width, height),true)
{}
public GLSurface (WGLDevice device, IntPtr hdc, int width, int height)
: base (NativeMethods.cairo_gl_surface_create_for_dc (device.Handle, hdc, width, height), true)
{}
public override void Flush ()
{
//base.Flush ();
SwapBuffers ();
}
public override int Width => NativeMethods.cairo_gl_surface_get_width (handle);
public override int Height => NativeMethods.cairo_gl_surface_get_height (handle);
public override void Resize(int width, int height)
=> NativeMethods.cairo_gl_surface_set_size(handle, width, height);
public void SwapBuffers(){
NativeMethods.cairo_gl_surface_swapbuffers (this.handle);
}
}
}
#endif
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