C++ (Cpp) cg_framebuffer_pop_matrix примеры использования

Пример #1

static void
redraw(Data *data)
{
    cg_framebuffer_t *fb = data->fb;

    cg_framebuffer_clear4f(fb, CG_BUFFER_BIT_COLOR, 0, 0, 0, 1);

    cg_framebuffer_push_matrix(fb);
    cg_framebuffer_translate(fb, data->center_x, -data->center_y, 0.0f);

    cg_primitive_draw(data->triangle, fb, data->pipeline);
    cg_framebuffer_pop_matrix(fb);

    cg_onscreen_swap_buffers(CG_ONSCREEN(fb));
}

Пример #2

static bool
draw_rectangle (TestState *state,
                int x,
                int y,
                TestDepthState *rect_state)
{
  uint8_t Cr = MASK_RED (rect_state->color);
  uint8_t Cg = MASK_GREEN (rect_state->color);
  uint8_t Cb = MASK_BLUE (rect_state->color);
  uint8_t Ca = MASK_ALPHA (rect_state->color);
  cg_pipeline_t *pipeline;
  cg_depth_state_t depth_state;

  cg_depth_state_init (&depth_state);
  cg_depth_state_set_test_enabled (&depth_state, rect_state->test_enable);
  cg_depth_state_set_test_function (&depth_state, rect_state->test_function);
  cg_depth_state_set_write_enabled (&depth_state, rect_state->write_enable);
  cg_depth_state_set_range (&depth_state,
                              rect_state->range_near,
                              rect_state->range_far);

  pipeline = cg_pipeline_new (test_dev);
  if (!cg_pipeline_set_depth_state (pipeline, &depth_state, NULL))
    {
      cg_object_unref (pipeline);
      return false;
    }

  cg_pipeline_set_color4ub (pipeline, Cr, Cg, Cb, Ca);

  cg_framebuffer_set_depth_write_enabled (test_fb, rect_state->fb_write_enable);
  cg_framebuffer_push_matrix (test_fb);
  cg_framebuffer_translate (test_fb, 0, 0, rect_state->depth);
  cg_framebuffer_draw_rectangle (test_fb,
                                   pipeline,
                                   x * QUAD_WIDTH,
                                   y * QUAD_WIDTH,
                                   x * QUAD_WIDTH + QUAD_WIDTH,
                                   y * QUAD_WIDTH + QUAD_WIDTH);
  cg_framebuffer_pop_matrix (test_fb);

  cg_object_unref (pipeline);

  return true;
}