Method upload_to_texture

easyvolcap/utils/gl_utils.py:643–650

(self, ptr: np.ndarray, x: int = 0, y: int = 0, w: int = 0, h: int = 0)

        CHECK_CUDART_ERROR(cudart.cudaGraphicsUnmapResources(1, self.cu_tex, torch.cuda.current_stream().cuda_stream))

    def upload_to_texture(self, ptr: np.ndarray, x: int = 0, y: int = 0, w: int = 0, h: int = 0):
        w = w or self.W
        h = h or self.H
        if isinstance(ptr, torch.Tensor):
            ptr = ptr.detach().cpu().numpy()  # slow sync and copy operation # MARK: SYNC

        gl.glBindTexture(gl.GL_TEXTURE_2D, self.tex)
        gl.glTexSubImage2D(gl.GL_TEXTURE_2D, 0, x, y, w, h, gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, ptr)  # to gpu, might slow down?

    @property
    def verts_data(self):  # a heavy copy operation