예제 #1
0
func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
	var framebuffer Framebuffer
	var f uint32
	if err := c.runOnContextThread(func() error {
		gl.GenFramebuffers(1, &f)
		// TODO: Use gl.IsFramebuffer
		if f <= 0 {
			return errors.New("opengl: creating framebuffer failed: gl.IsFramebuffer returns false")
		}
		return nil
	}); err != nil {
		return 0, err
	}
	if err := c.bindFramebuffer(Framebuffer(f)); err != nil {
		return 0, err
	}
	if err := c.runOnContextThread(func() error {
		gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, uint32(texture), 0)
		s := gl.CheckFramebufferStatus(gl.FRAMEBUFFER)
		if s != gl.FRAMEBUFFER_COMPLETE {
			if s != 0 {
				return fmt.Errorf("opengl: creating framebuffer failed: %v", s)
			}
			if e := gl.GetError(); e != gl.NO_ERROR {
				return fmt.Errorf("opengl: creating framebuffer failed: (glGetError) %d", e)
			}
			return fmt.Errorf("opengl: creating framebuffer failed: unknown error")
		}
		framebuffer = Framebuffer(f)
		return nil
	}); err != nil {
		return 0, err
	}
	return framebuffer, nil
}
예제 #2
0
func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
	var f uint32
	gl.GenFramebuffers(1, &f)
	gl.BindFramebuffer(gl.FRAMEBUFFER, f)

	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, uint32(texture), 0)
	if gl.CheckFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE {
		return 0, errors.New("creating framebuffer failed")
	}

	return Framebuffer(f), nil
}
예제 #3
0
파일: shim_opengl.go 프로젝트: tanema/amore
func (canvas *Canvas) attacheExtra(canvases []*Canvas) {
	if canvases != nil && len(canvases) > 0 {
		// Attach the canvas textures to the active FBO and set up MRTs.
		drawbuffers := []uint32{gl.COLOR_ATTACHMENT0}
		// Attach the canvas textures to the currently bound framebuffer.
		for i := 0; i < len(canvases); i++ {
			buf := gl.COLOR_ATTACHMENT1 + uint32(i)
			gl.FramebufferTexture2D(gl.FRAMEBUFFER, buf, gl.TEXTURE_2D, canvases[i].getHandle().Value, 0)
			drawbuffers = append(drawbuffers, buf)
		}
		// set up multiple render targets
		gl.DrawBuffers(int32(len(drawbuffers)), &drawbuffers[0])
	} else {
		// Make sure the FBO is only using a single draw buffer.
		gl.DrawBuffer(gl.COLOR_ATTACHMENT0)
	}
}
예제 #4
0
파일: gl_opengl.go 프로젝트: tanema/amore
// FramebufferTexture2D attaches the t to the current frame buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glFramebufferTexture2D.xhtml
func FramebufferTexture2D(target, attachment, texTarget Enum, t Texture, level int) {
	gl.FramebufferTexture2D(uint32(target), uint32(attachment), uint32(texTarget), t.Value, int32(level))
}