public OpenGLFramebuffer(OpenGLTexture2D colorTexture, OpenGLTexture2D depthTexture)
: this()
{
_depthTexture = depthTexture;
Bind();
AttachColorTexture(0, colorTexture);
AttachDepthTexture();
Unbind();
}
public override Framebuffer CreateFramebuffer(int width, int height)
{
OpenGLTexture2D colorTexture = new OpenGLTexture2D(
width, height,
PixelFormat.R32_G32_B32_A32_Float,
PixelInternalFormat.Rgba32f,
OpenTK.Graphics.OpenGL.PixelFormat.Rgba,
PixelType.Float);
OpenGLTexture2D depthTexture = new OpenGLTexture2D(
width,
height,
PixelFormat.Alpha_UInt16,
PixelInternalFormat.DepthComponent16,
OpenTK.Graphics.OpenGL.PixelFormat.DepthComponent,
PixelType.UnsignedShort);
return(new OpenGLFramebuffer(colorTexture, depthTexture));
}
public void AttachColorTexture(int index, DeviceTexture2D texture)
{
Bind();
Debug.Assert(texture is OpenGLTexture2D);
OpenGLTexture2D glTex = (OpenGLTexture2D)texture;
_colorTextures[index] = glTex;
GL.ActiveTexture(TextureUnit.Texture0);
glTex.Bind();
GL.FramebufferTexture2D(
FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0,
TextureTarget.Texture2D,
glTex.ID,
0);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.DrawBuffer(DrawBufferMode.ColorAttachment0 + index);
Unbind();
}
public void AttachColorTexture(int index, DeviceTexture2D texture)
{
Bind();
Debug.Assert(texture is OpenGLTexture2D);
OpenGLTexture2D glTex = (OpenGLTexture2D)texture;
_colorTextures[index] = glTex;
GL.ActiveTexture(TextureUnit.Texture0);
glTex.Bind();
GL.FramebufferTexture2D(
FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0 + index,
TextureTarget.Texture2D,
glTex.ID,
0);
GL.BindTexture(TextureTarget.Texture2D, 0);
// TODO: I'm pretty sure this is supposed to be using glDrawBuffers (plural).
GL.DrawBuffer(DrawBufferMode.ColorAttachment0 + index);
Unbind();
}
public static OpenGLTexture2D Create <T>(T[] pixelData, int width, int height, int pixelSizeInBytes, PixelFormat format) where T : struct
{
var internalFormat = OpenGLFormats.MapPixelInternalFormat(format);
var pixelFormat = OpenGLFormats.MapPixelFormat(format);
var pixelType = OpenGLFormats.MapPixelType(format);
OpenGLTexture2D texture = new OpenGLTexture2D(
width,
height,
format,
internalFormat,
pixelFormat,
pixelType);
texture.Bind();
GL.TexImage2D(TextureTarget.Texture2D, 0, internalFormat, width, height, 0, pixelFormat, pixelType, pixelData);
GL.BindTexture(TextureTarget.Texture2D, 0);
return(texture);
}
public override DeviceTexture2D CreateTexture <T>(T[] pixelData, int width, int height, int pixelSizeInBytes, PixelFormat format)
{
return(OpenGLTexture2D.Create(pixelData, width, height, pixelSizeInBytes, format));
}
