clear-framebuffer-attachment ( framebuffer: any-framebuffer attachment-ref: attachment-ref value -- )
GPU-accelerated rendering » Framebuffer objects

Prev:	clear-framebuffer ( framebuffer alist -- )
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Vocabulary
gpu.framebuffers

Inputs

framebuffer	an any-framebuffer
attachment-ref	an attachment-ref
value	an object

Outputs
None

Word description
Clears the active viewport area of the given attachment to framebuffer to value.

Notes
User-created framebuffer objects require OpenGL 3.0 or one of the GL_ARB_framebuffer_object or GL_EXT_framebuffer_object extensions.

See also
clear-framebuffer

Definition

USING: gpu.framebuffers.private kernel math opengl.gl typed
variants ;

IN: gpu.framebuffers

TYPED:: clear-framebuffer-attachment
    ( framebuffer: any-framebuffer attachment-ref: attachment-ref value -- )
    GL_DRAW_FRAMEBUFFER framebuffer framebuffer-handle
    glBindFramebuffer attachment-ref {
        {
            system-attachment
            [| side face |
                float-type side face gl-system-attachment
                value (clear-color-attachment)
            ]
        }
        {
            color-attachment
            [| i |
                framebuffer i (color-attachment-type)
                GL_COLOR_ATTACHMENT0 i +
                value (clear-color-attachment)
            ]
        }
        {
            default-attachment
            [
                framebuffer
                [ (default-attachment-type) ]
                [ (default-gl-attachment) ] bi
                value (clear-color-attachment)
            ]
        }
        {
            depth-attachment
            [ value glClearDepth GL_DEPTH_BUFFER_BIT glClear ]
        }
        {
            stencil-attachment
            [
                value glClearStencil
                GL_STENCIL_BUFFER_BIT glClear
            ]
        }
    } match ;