public Sprite (Stream stream, TextureSettings settings, Vector4 rect, bool relativeRect, Vector4 color, bool flipV = true) {
var tex = new Texture(stream, settings);
_material = new SpriteMaterial(new SpriteShader(), tex);
if (rect == Vector4.Zero)
rect = new Vector4(0, 0, tex.Size.Width, tex.Size.Height);
else if (relativeRect) {
rect.X *= tex.Size.Width;
rect.Y *= tex.Size.Height;
rect.Z *= tex.Size.Width;
rect.W *= tex.Size.Height;
}
_size = new Vector2(rect.Z - rect.X, rect.W - rect.Y);
_vbuffer = new VertexBuffer(VertexFormat.PositionColorUV);
_vbuffer.Data = new [] {
rect.X, rect.Y, 0f, color.X, color.Y, color.Z, color.W, 0f, flipV ? 1f : 0f,
rect.Z, rect.Y, 0f, color.X, color.Y, color.Z, color.W, 1f, flipV ? 1f : 0f,
rect.Z, rect.W, 0f, color.X, color.Y, color.Z, color.W, 1f, flipV ? 0f : 1f,
rect.X, rect.W, 0f, color.X, color.Y, color.Z, color.W, 0f, flipV ? 0f : 1f
};
_vbuffer.Commit ();
_ibuffer = new IndexBuffer();
_ibuffer.Data = new [] { 0, 1, 2, 2, 3, 0 };
_ibuffer.Commit ();
_ioffset = 0;
_icount = 6;
_ownResources = true;
}
public FrameBuffer (Texture texture) {
ThreadContext.Current.EnsureGLContext();
_size = texture.Size;
_oldfb = this.CurrentFrameBuffer;
_oldViewport = new int[4];
GL.GenFramebuffers(1, out _fb);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _fb);
GL.BindTexture(TextureTarget.Texture2D, texture.Handle);
#if __DESKTOP__
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.Texture2D, texture.Handle, 0);
#else
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferSlot.ColorAttachment0, TextureTarget.Texture2D, texture.Handle, 0);
#endif
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _oldfb);
this.ClearOnBegin = true;
}
public TextureSlot(Texture texture, int uvIndex, float blendFactor, TextureOperation operation, TextureWrap wrapS, TextureWrap wrapT) {
this.Texture = texture;
this.UVIndex = uvIndex;
this.BlendFactor = blendFactor;
this.Operation = operation;
this.WrapS = wrapS;
this.WrapT = wrapT;
}
public SpriteMaterial (Shader shader, Texture texture) : base(shader) {
_texture = texture;
this.Color = Vector4.One;
}
