Method Draw

common/render_shaders_default.go:208–270

(ren *RenderComponent, space *SpaceComponent)

}

func (s *basicShader) Draw(ren *RenderComponent, space *SpaceComponent) {
	// If our texture (or any of its properties) has changed or we've reached the end of our buffer, flush before moving on.
	if s.lastTexture != ren.Drawable.Texture() {
		s.flush()
		engo.Gl.BindTexture(engo.Gl.TEXTURE_2D, ren.Drawable.Texture())
		s.setTexture(ren.Drawable.Texture())
	} else if s.idx == len(s.vertices) {
		s.flush()
	}

	if s.lastRepeating != ren.Repeat {
		s.flush()
		var val int
		switch ren.Repeat {
		case NoRepeat:
			val = engo.Gl.CLAMP_TO_EDGE
		case ClampToEdge:
			val = engo.Gl.CLAMP_TO_EDGE
		case ClampToBorder:
			val = engo.Gl.CLAMP_TO_EDGE
		case Repeat:
			val = engo.Gl.REPEAT
		case MirroredRepeat:
			val = engo.Gl.MIRRORED_REPEAT
		}
		engo.Gl.TexParameteri(engo.Gl.TEXTURE_2D, engo.Gl.TEXTURE_WRAP_S, val)
		engo.Gl.TexParameteri(engo.Gl.TEXTURE_2D, engo.Gl.TEXTURE_WRAP_T, val)

		s.lastRepeating = ren.Repeat
	}

	if s.lastMagFilter != ren.magFilter {
		s.flush()
		var val int
		switch ren.magFilter {
		case FilterNearest:
			val = engo.Gl.NEAREST
		case FilterLinear:
			val = engo.Gl.LINEAR
		}
		engo.Gl.TexParameteri(engo.Gl.TEXTURE_2D, engo.Gl.TEXTURE_MAG_FILTER, val)

		s.lastMagFilter = ren.magFilter
	}

	if s.lastMinFilter != ren.minFilter {
		s.flush()
		var val int
		switch ren.minFilter {
		case FilterNearest:
			val = engo.Gl.NEAREST
		case FilterLinear:
			val = engo.Gl.LINEAR
		}
		engo.Gl.TexParameteri(engo.Gl.TEXTURE_2D, engo.Gl.TEXTURE_MIN_FILTER, val)

		s.lastMinFilter = ren.minFilter
	}