コード例 #1
0
ファイル: buffervertex.go プロジェクト: Niriel/daggor
func bufferSetUp(buffer bufferSetUpInt, program gl.Program) {
	buffer.gen()
	buffer.bind()
	// Collect the attrib locations for each attrib name.
	atts_names := buffer.names() // Expected GLSL variable names.
	atts := make([]gl.AttribLocation, len(atts_names))
	for i, att_name := range atts_names {
		atts[i] = program.GetAttribLocation(att_name)
		if err := CheckGlError(); err != nil {
			err.Description = fmt.Sprintf("program.GetAttribLocation(%#v)", att_name)
			panic(err)
		}
		if atts[i] == -1 {
			panic(fmt.Sprintf("attrib location %#v not found", att_name))
		}
	}
	// Now that the locations are known, we can relate them to vertex data.
	buffer.attribPointers(atts)
	buffer.unbind()
}
コード例 #2
0
ファイル: meshbuffer.go プロジェクト: spacetug/raytracer
// renderBuffered uses VBO's. This is the preferred mode for systems
// where shader support is not present or deemed necessary.
func (mb *MeshBuffer) renderBuffered(mode gl.GLenum, m Mesh, program gl.Program) {
	is, ic := m[mbIndexKey][0], m[mbIndexKey][1]

	program.Use()
	var attribLocation gl.AttribLocation
	for _, value := range mb.attr {
		if value.name == "index" {
			continue
		}
		value.bind()
		if value.Invalid() {
			value.buffer()
		}

		attribLocation = program.GetAttribLocation(value.name)
		attribLocation.EnableArray()
		attribLocation.AttribPointer(value.size, value.typ, false, 0, uintptr(0))
		value.unbind()
	}

	ia := mb.find(mbIndexKey)
	ia.bind()
	if ia.Invalid() {
		ia.buffer()
	}

	gl.DrawElements(mode, ic, ia.typ, uintptr(is*ia.stride))
	ia.unbind()

	for _, value := range mb.attr {
		if value.name == "index" {
			continue
		}
		attribLocation := program.GetAttribLocation(value.name)
		attribLocation.DisableArray()
	}

}