public static Framebuffer CreateFramebuffer(GraphicsDevice device, uint resolutionX, uint resolutionY, PixelFormat pixelFormat)
{
var drawTrgt = device.ResourceFactory.CreateTexture(
new TextureDescription(resolutionX,
resolutionY,
1, 1, 1,
pixelFormat,
TextureUsage.RenderTarget | TextureUsage.Sampled | TextureUsage.Storage,
TextureType.Texture2D)
);
var depthTrgt = device.ResourceFactory.CreateTexture(
new TextureDescription(resolutionY,
resolutionY,
1, 1, 1,
PixelFormat.R32_Float,
TextureUsage.DepthStencil,
TextureType.Texture2D)
);
FramebufferAttachmentDescription[] cltTrgs = new FramebufferAttachmentDescription[1]
{
new FramebufferAttachmentDescription()
{
ArrayLayer = 0,
MipLevel = 0,
Target = drawTrgt
}
};
FramebufferAttachmentDescription depTrg = new FramebufferAttachmentDescription()
{
ArrayLayer = 0,
MipLevel = 0,
Target = depthTrgt
};
var frameBuffDesc = new FramebufferDescription()
{
ColorTargets = cltTrgs,
//DepthTarget = depTrg
};
var offscreenBuffer = device.ResourceFactory.CreateFramebuffer(frameBuffDesc);
return(offscreenBuffer);
}
private void UpdateStoredDescription(FramebufferAttachmentPoint attachmentPoint, ref FramebufferAttachmentDescription newDesc)
{
if ((FramebufferAttachmentPoint.Color0 <= attachmentPoint && attachmentPoint <= FramebufferAttachmentPoint.Color15))
{
int index = attachmentPoint - FramebufferAttachmentPoint.Color0;
colorAttachments[index] = newDesc;
if (index >= enabledColorAttachmentsRange)
enabledColorAttachmentsRange = index + 1;
}
else if (attachmentPoint == FramebufferAttachmentPoint.DepthStencil || attachmentPoint == FramebufferAttachmentPoint.Depth)
{
depthAttachment = newDesc;
}
else if (attachmentPoint == FramebufferAttachmentPoint.DepthStencil || attachmentPoint == FramebufferAttachmentPoint.Stencil)
{
stencilAttachment = newDesc;
}
}
public void AttachRenderbuffer(FramebufferAttachmentPoint attachmentPoint, IRenderbuffer renderbuffer)
{
var newDesc = new FramebufferAttachmentDescription
{
Type = FramebufferAttachmentType.Renderbufer,
Renderbuffer = renderbuffer,
};
if (IsRedundant(attachmentPoint, ref newDesc))
return;
var framebufferTarget = context.Bindings.Framebuffers.EditingTarget;
context.Bindings.Framebuffers.ByTarget(framebufferTarget).Set(this);
GL.FramebufferRenderbuffer((int)framebufferTarget, (int)attachmentPoint, (int)RenderbufferTarget.Renderbuffer, renderbuffer.Handle);
UpdateStoredDescription(attachmentPoint, ref newDesc);
}
private bool IsRedundant(FramebufferAttachmentPoint attachmentPoint, ref FramebufferAttachmentDescription newDesc)
{
switch (attachmentPoint)
{
case FramebufferAttachmentPoint.Color0:
case FramebufferAttachmentPoint.Color1:
case FramebufferAttachmentPoint.Color2:
case FramebufferAttachmentPoint.Color3:
case FramebufferAttachmentPoint.Color4:
case FramebufferAttachmentPoint.Color5:
case FramebufferAttachmentPoint.Color6:
case FramebufferAttachmentPoint.Color7:
case FramebufferAttachmentPoint.Color8:
case FramebufferAttachmentPoint.Color9:
case FramebufferAttachmentPoint.Color10:
case FramebufferAttachmentPoint.Color11:
case FramebufferAttachmentPoint.Color12:
case FramebufferAttachmentPoint.Color13:
case FramebufferAttachmentPoint.Color14:
case FramebufferAttachmentPoint.Color15:
return FramebufferAttachmentDescription.Equals(ref newDesc, ref colorAttachments[attachmentPoint - FramebufferAttachmentPoint.Color0]);
case FramebufferAttachmentPoint.DepthStencil:
return FramebufferAttachmentDescription.Equals(ref newDesc, ref depthAttachment) &&
FramebufferAttachmentDescription.Equals(ref newDesc, ref stencilAttachment);
case FramebufferAttachmentPoint.Depth:
return FramebufferAttachmentDescription.Equals(ref newDesc, ref depthAttachment);
case FramebufferAttachmentPoint.Stencil:
return FramebufferAttachmentDescription.Equals(ref newDesc, ref stencilAttachment);
default:
throw new ArgumentOutOfRangeException("attachmentPoint");
}
}
public void AttachTextureImage(FramebufferAttachmentPoint attachmentPoint, ITextureCubemapArray texture, int level, int arrayIndex, CubemapFace cubemapFace)
{
var layer = 6 * arrayIndex + cubemapFace - CubemapFace.PositiveX;
var newDesc = new FramebufferAttachmentDescription
{
Type = FramebufferAttachmentType.Texture,
TextureTarget = TextureTarget.TextureCubeMapArray,
Texture = texture,
Level = level,
Layer = layer
};
if (IsRedundant(attachmentPoint, ref newDesc))
return;
var framebufferTarget = context.Bindings.Framebuffers.EditingTarget;
context.Bindings.Framebuffers.ByTarget(framebufferTarget).Set(this);
GL.FramebufferTextureLayer((int)framebufferTarget, (int)attachmentPoint, texture.Handle, layer, level);
UpdateStoredDescription(attachmentPoint, ref newDesc);
}
public void AttachTextureImage(FramebufferAttachmentPoint attachmentPoint, ITexture3D texture, int level, int depthLayer)
{
var newDesc = new FramebufferAttachmentDescription
{
Type = FramebufferAttachmentType.Texture,
TextureTarget = TextureTarget.Texture3D,
Texture = texture,
Level = level,
Layer = depthLayer
};
if (IsRedundant(attachmentPoint, ref newDesc))
return;
var framebufferTarget = context.Bindings.Framebuffers.EditingTarget;
context.Bindings.Framebuffers.ByTarget(framebufferTarget).Set(this);
GL.FramebufferTextureLayer((int)framebufferTarget, (int)attachmentPoint, texture.Handle, level, depthLayer);
UpdateStoredDescription(attachmentPoint, ref newDesc);
}
public void AttachTextureImage(FramebufferAttachmentPoint attachmentPoint, ITexture2DMultisample texture)
{
var newDesc = new FramebufferAttachmentDescription
{
Type = FramebufferAttachmentType.Texture,
TextureTarget = TextureTarget.Texture2DMultisample,
Texture = texture
};
if (IsRedundant(attachmentPoint, ref newDesc))
return;
var framebufferTarget = context.Bindings.Framebuffers.EditingTarget;
context.Bindings.Framebuffers.ByTarget(framebufferTarget).Set(this);
//gl.FramebufferTexture((int)framebufferTarget, (int)attachmentPoint, texture.Handle, 0);
GL.FramebufferTexture2D((int)framebufferTarget, (int)attachmentPoint, (int)texture.Target, texture.Handle, 0);
UpdateStoredDescription(attachmentPoint, ref newDesc);
}
public void AttachTextureAsLayeredImage(FramebufferAttachmentPoint attachmentPoint, ITextureCubemapArray texture, int level)
{
var newDesc = new FramebufferAttachmentDescription
{
Type = FramebufferAttachmentType.TextureLayers,
TextureTarget = TextureTarget.TextureCubeMapArray,
Texture = texture,
Level = level
};
if (IsRedundant(attachmentPoint, ref newDesc))
return;
var framebufferTarget = context.Bindings.Framebuffers.EditingTarget;
context.Bindings.Framebuffers.ByTarget(framebufferTarget).Set(this);
//gl.FramebufferTexture(ft, fa, d.Texture.Handle, d.Level);
GL.FramebufferTexture2D((int)framebufferTarget, (int)attachmentPoint, (int)texture.Target, texture.Handle, level);
UpdateStoredDescription(attachmentPoint, ref newDesc);
}
