Ejemplo n.º 1
0
FramebufferAttachment *Framebuffer::getAttachment(GLenum attachment) const
{
    if (attachment >= GL_COLOR_ATTACHMENT0 && attachment <= GL_COLOR_ATTACHMENT15)
    {
        return getColorbuffer(attachment - GL_COLOR_ATTACHMENT0);
    }
    else
    {
        switch (attachment)
        {
          case GL_DEPTH_ATTACHMENT:
            return getDepthbuffer();
          case GL_STENCIL_ATTACHMENT:
            return getStencilbuffer();
          case GL_DEPTH_STENCIL_ATTACHMENT:
            return getDepthStencilBuffer();
          default:
            UNREACHABLE();
            return NULL;
        }
    }
}
Ejemplo n.º 2
0
GLenum Framebuffer::completeness() const
{
    int width = 0;
    int height = 0;
    int colorbufferSize = 0;
    int samples = -1;
    bool missingAttachment = true;

    for (unsigned int colorAttachment = 0; colorAttachment < IMPLEMENTATION_MAX_DRAW_BUFFERS; colorAttachment++)
    {
        if (mColorbufferTypes[colorAttachment] != GL_NONE)
        {
            const Renderbuffer *colorbuffer = getColorbuffer(colorAttachment);

            if (!colorbuffer)
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }

            if (colorbuffer->getWidth() == 0 || colorbuffer->getHeight() == 0)
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }

            if (mColorbufferTypes[colorAttachment] == GL_RENDERBUFFER)
            {
                if (!gl::IsColorRenderable(colorbuffer->getInternalFormat()))
                {
                    return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
                }
            }
            else if (IsInternalTextureTarget(mColorbufferTypes[colorAttachment]))
            {
                GLint internalformat = colorbuffer->getInternalFormat();
                GLenum format = gl::ExtractFormat(internalformat);

                if (IsCompressed(format) ||
                    format == GL_ALPHA ||
                    format == GL_LUMINANCE ||
                    format == GL_LUMINANCE_ALPHA)
                {
                    return GL_FRAMEBUFFER_UNSUPPORTED;
                }

                bool filtering, renderable;

                if ((gl::IsFloat32Format(internalformat) && !mRenderer->getFloat32TextureSupport(&filtering, &renderable)) ||
                    (gl::IsFloat16Format(internalformat) && !mRenderer->getFloat16TextureSupport(&filtering, &renderable)))
                {
                    return GL_FRAMEBUFFER_UNSUPPORTED;
                }

                if (gl::IsDepthTexture(internalformat) || gl::IsStencilTexture(internalformat))
                {
                    return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
                }
            }
            else
            {
                UNREACHABLE();
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }

            if (!missingAttachment)
            {
                // all color attachments must have the same width and height
                if (colorbuffer->getWidth() != width || colorbuffer->getHeight() != height)
                {
                    return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
                }

                // APPLE_framebuffer_multisample, which EXT_draw_buffers refers to, requires that
                // all color attachments have the same number of samples for the FBO to be complete.
                if (colorbuffer->getSamples() != samples)
                {
                    return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT;
                }

                // all color attachments attachments must have the same number of bitplanes
                if (gl::ComputePixelSize(colorbuffer->getInternalFormat()) != colorbufferSize)
                {
                    return GL_FRAMEBUFFER_UNSUPPORTED;
                }

                // D3D11 does not allow for overlapping RenderTargetViews, so ensure uniqueness
                for (unsigned int previousColorAttachment = 0; previousColorAttachment < colorAttachment; previousColorAttachment++)
                {
                    if (mColorbufferPointers[colorAttachment].get() == mColorbufferPointers[previousColorAttachment].get())
                    {
                        return GL_FRAMEBUFFER_UNSUPPORTED;
                    }
                }
            }
            else
            {
                width = colorbuffer->getWidth();
                height = colorbuffer->getHeight();
                samples = colorbuffer->getSamples();
                colorbufferSize = gl::ComputePixelSize(colorbuffer->getInternalFormat());
                missingAttachment = false;
            }
        }
    }

    const Renderbuffer *depthbuffer = NULL;
    const Renderbuffer *stencilbuffer = NULL;

    if (mDepthbufferType != GL_NONE)
    {
        depthbuffer = getDepthbuffer();

        if (!depthbuffer)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (depthbuffer->getWidth() == 0 || depthbuffer->getHeight() == 0)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (mDepthbufferType == GL_RENDERBUFFER)
        {
            if (!gl::IsDepthRenderable(depthbuffer->getInternalFormat()))
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }
        }
        else if (IsInternalTextureTarget(mDepthbufferType))
        {
            GLint internalformat = depthbuffer->getInternalFormat();

            // depth texture attachments require OES/ANGLE_depth_texture
            if (!mRenderer->getDepthTextureSupport())
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }

            if (!gl::IsDepthTexture(internalformat))
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }
        }
        else
        {
            UNREACHABLE();
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (missingAttachment)
        {
            width = depthbuffer->getWidth();
            height = depthbuffer->getHeight();
            samples = depthbuffer->getSamples();
            missingAttachment = false;
        }
        else if (width != depthbuffer->getWidth() || height != depthbuffer->getHeight())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
        }
        else if (samples != depthbuffer->getSamples())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
        }
    }

    if (mStencilbufferType != GL_NONE)
    {
        stencilbuffer = getStencilbuffer();

        if (!stencilbuffer)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (stencilbuffer->getWidth() == 0 || stencilbuffer->getHeight() == 0)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (mStencilbufferType == GL_RENDERBUFFER)
        {
            if (!gl::IsStencilRenderable(stencilbuffer->getInternalFormat()))
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }
        }
        else if (IsInternalTextureTarget(mStencilbufferType))
        {
            GLint internalformat = stencilbuffer->getInternalFormat();

            // texture stencil attachments come along as part
            // of OES_packed_depth_stencil + OES/ANGLE_depth_texture
            if (!mRenderer->getDepthTextureSupport())
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }

            if (!gl::IsStencilTexture(internalformat))
            {
                return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
            }
        }
        else
        {
            UNREACHABLE();
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (missingAttachment)
        {
            width = stencilbuffer->getWidth();
            height = stencilbuffer->getHeight();
            samples = stencilbuffer->getSamples();
            missingAttachment = false;
        }
        else if (width != stencilbuffer->getWidth() || height != stencilbuffer->getHeight())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
        }
        else if (samples != stencilbuffer->getSamples())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
        }
    }

    // if we have both a depth and stencil buffer, they must refer to the same object
    // since we only support packed_depth_stencil and not separate depth and stencil
    if (depthbuffer && stencilbuffer && (depthbuffer != stencilbuffer))
    {
        return GL_FRAMEBUFFER_UNSUPPORTED;
    }

    // we need to have at least one attachment to be complete
    if (missingAttachment)
    {
        return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
    }

    return GL_FRAMEBUFFER_COMPLETE;
}
Ejemplo n.º 3
0
GLenum Framebuffer::completeness()
{
    int width = 0;
    int height = 0;
    int samples = -1;

    if (mColorbufferType != GL_NONE)
    {
        Colorbuffer *colorbuffer = getColorbuffer();

        if (!colorbuffer)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (colorbuffer->getWidth() == 0 || colorbuffer->getHeight() == 0)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (IsTextureTarget(mColorbufferType))
        {
            if (IsCompressed(colorbuffer->getFormat()))
            {
                return GL_FRAMEBUFFER_UNSUPPORTED;
            }
        }

        width = colorbuffer->getWidth();
        height = colorbuffer->getHeight();
        samples = colorbuffer->getSamples();
    }
    else
    {
        return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
    }

    DepthStencilbuffer *depthbuffer = NULL;
    DepthStencilbuffer *stencilbuffer = NULL;

    if (mDepthbufferType != GL_NONE)
    {
        depthbuffer = getDepthbuffer();

        if (!depthbuffer)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (depthbuffer->getWidth() == 0 || depthbuffer->getHeight() == 0)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (width == 0)
        {
            width = depthbuffer->getWidth();
            height = depthbuffer->getHeight();
        }
        else if (width != depthbuffer->getWidth() || height != depthbuffer->getHeight())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
        }

        if (samples == -1)
        {
            samples = depthbuffer->getSamples();
        }
        else if (samples != depthbuffer->getSamples())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
        }
        
        if (IsTextureTarget(mDepthbufferType))
        {
            if (IsCompressed(depthbuffer->getFormat()))
            {
                return GL_FRAMEBUFFER_UNSUPPORTED;
            }
        }
    }

    if (mStencilbufferType != GL_NONE)
    {
        stencilbuffer = getStencilbuffer();

        if (!stencilbuffer)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (stencilbuffer->getWidth() == 0 || stencilbuffer->getHeight() == 0)
        {
            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
        }

        if (width == 0)
        {
            width = stencilbuffer->getWidth();
            height = stencilbuffer->getHeight();
        }
        else if (width != stencilbuffer->getWidth() || height != stencilbuffer->getHeight())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
        }

        if (samples == -1)
        {
            samples = stencilbuffer->getSamples();
        }
        else if (samples != stencilbuffer->getSamples())
        {
            return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
        }
        
        if (IsTextureTarget(mStencilbufferType))
        {
            if (IsCompressed(stencilbuffer->getFormat()))
            {
                return GL_FRAMEBUFFER_UNSUPPORTED;
            }
        }
    }

    if (mDepthbufferType == GL_RENDERBUFFER && mStencilbufferType == GL_RENDERBUFFER)
    {
        if (depthbuffer->getFormat() != GL_DEPTH24_STENCIL8_OES ||
            stencilbuffer->getFormat() != GL_DEPTH24_STENCIL8_OES ||
            depthbuffer->getSerial() != stencilbuffer->getSerial())
        {
            return GL_FRAMEBUFFER_UNSUPPORTED;
        }
    }

    return GL_FRAMEBUFFER_COMPLETE;
}
Ejemplo n.º 4
0
GLenum Framebuffer::completeness(int &width, int &height, int &samples)
{
	width = -1;
	height = -1;
	samples = -1;

	if(mColorbufferType != GL_NONE_OES)
	{
		Renderbuffer *colorbuffer = getColorbuffer();

		if(!colorbuffer)
		{
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(colorbuffer->getWidth() == 0 || colorbuffer->getHeight() == 0)
		{
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(mColorbufferType == GL_RENDERBUFFER_OES)
		{
			if(!IsColorRenderable(colorbuffer->getFormat()))
			{
				return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
			}
		}
		else if(IsTextureTarget(mColorbufferType))
		{
			GLenum format = colorbuffer->getFormat();

			if(!IsColorRenderable(format))
			{
				return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
			}

			if(IsDepthTexture(format) || IsStencilTexture(format))
			{
				return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
			}
		}
		else
		{
			UNREACHABLE(mColorbufferType);
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		width = colorbuffer->getWidth();
		height = colorbuffer->getHeight();
		samples = colorbuffer->getSamples();
	}

	Renderbuffer *depthbuffer = nullptr;
	Renderbuffer *stencilbuffer = nullptr;

	if(mDepthbufferType != GL_NONE_OES)
	{
		depthbuffer = getDepthbuffer();

		if(!depthbuffer)
		{
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(depthbuffer->getWidth() == 0 || depthbuffer->getHeight() == 0)
		{
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(mDepthbufferType == GL_RENDERBUFFER_OES)
		{
			if(!es1::IsDepthRenderable(depthbuffer->getFormat()))
			{
				return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
			}
		}
		else if(IsTextureTarget(mDepthbufferType))
		{
			if(!es1::IsDepthTexture(depthbuffer->getFormat()))
			{
				return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
			}
		}
		else
		{
			UNREACHABLE(mDepthbufferType);
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(width == -1 || height == -1)
		{
			width = depthbuffer->getWidth();
			height = depthbuffer->getHeight();
			samples = depthbuffer->getSamples();
		}
		else if(width != depthbuffer->getWidth() || height != depthbuffer->getHeight())
		{
			return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES;
		}
		else if(samples != depthbuffer->getSamples())
		{
			UNREACHABLE(0);
		}
	}

	if(mStencilbufferType != GL_NONE_OES)
	{
		stencilbuffer = getStencilbuffer();

		if(!stencilbuffer)
		{
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(stencilbuffer->getWidth() == 0 || stencilbuffer->getHeight() == 0)
		{
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(mStencilbufferType == GL_RENDERBUFFER_OES)
		{
			if(!es1::IsStencilRenderable(stencilbuffer->getFormat()))
			{
				return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
			}
		}
		else if(IsTextureTarget(mStencilbufferType))
		{
			GLenum internalformat = stencilbuffer->getFormat();

			if(!es1::IsStencilTexture(internalformat))
			{
				return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
			}
		}
		else
		{
			UNREACHABLE(mStencilbufferType);
			return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
		}

		if(width == -1 || height == -1)
		{
			width = stencilbuffer->getWidth();
			height = stencilbuffer->getHeight();
			samples = stencilbuffer->getSamples();
		}
		else if(width != stencilbuffer->getWidth() || height != stencilbuffer->getHeight())
		{
			return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES;
		}
		else if(samples != stencilbuffer->getSamples())
		{
			UNREACHABLE(0);
			return GL_FRAMEBUFFER_UNSUPPORTED_OES;   // GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_OES;
		}
	}

	// We need to have at least one attachment to be complete
	if(width == -1 || height == -1)
	{
		return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_OES;
	}

	return GL_FRAMEBUFFER_COMPLETE_OES;
}