我正在使用rt1052的pxp将横屏旋转成竖屏显示，但是在不断刷新的情况下，整体显示会向下偏移，这是为什么？
static void DEMO_FlushDisplay(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
{
lv_area_t dest_area =
{
.x1 = 0,
.x2 = 480 - 1,
.y1 = 0,
.y2 = 800 - 1,
};
lv_gpu_nxp_pxp_blit(((lv_color_t *)s_inactiveFrameBuffer), area, 800, color_p, area,480, LV_OPA_COVER, LV_DISP_ROT_270);
DCACHE_CleanInvalidateByRange((uint32_t)color_p, DEMO_FB_SIZE);
ELCDIF_SetNextBufferAddr(LCDIF, (uint32_t)s_inactiveFrameBuffer);
s_framePending = true;if (xSemaphoreTake(s_frameSema, portMAX_DELAY) == pdTRUE)
{
/* IMPORTANT!!!
* Inform the graphics library that you are ready with the flushing*/
lv_disp_flush_ready(disp_drv);
}
else
{
PRINTF("Display flush failed\r\n");
assert(0);
}
}
void lv_disp_drv_init(lv_disp_drv_t * driver)
{
lv_memset_00(driver, sizeof(lv_disp_drv_t));
driver->hor_res = 320;
driver->ver_res = 240;
driver->physical_hor_res = -1;
driver->physical_ver_res = -1;
driver->offset_x = 0;
driver->offset_y = 0;
driver->antialiasing = LV_COLOR_DEPTH > 8 ? 1 : 0;
driver->screen_transp = 0;
driver->dpi = LV_DPI_DEF;
driver->color_chroma_key = LV_COLOR_CHROMA_KEY;
#if LV_USE_GPU_NXP_PXP
// driver->draw_ctx_init = lv_draw_pxp_ctx_init;
// driver->draw_ctx_deinit = lv_draw_pxp_ctx_deinit;
// driver->draw_ctx_size = sizeof(lv_draw_pxp_ctx_t);
driver->draw_ctx_init = lv_draw_sw_init_ctx;
driver->draw_ctx_deinit = lv_draw_sw_init_ctx;
driver->draw_ctx_size = sizeof(lv_draw_sw_ctx_t);
#else
driver->draw_ctx_init = lv_draw_sw_init_ctx;
driver->draw_ctx_deinit = lv_draw_sw_init_ctx;
driver->draw_ctx_size = sizeof(lv_draw_sw_ctx_t);
#endif
}
嗨@dsd ，
LV_USE_GPU_NXP_PXP_AUTO_INIT 允许 LVGL 利用 PXP 进行内部控件渲染，当应用程序还并行使用此 PXP 进行全屏旋转时，这肯定会导致问题。然而，这可能并非问题的根源。
从初始代码来看，你似乎没有使用 dest_area，或者说你将 area 同时用作 PXP blit 的源和目标，这意味着只有部分脏区域可能会被放置在不同的绝对位置，而不是预期的位置。
static void DEMO_FlushDisplay(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
{
DCACHE_CleanInvalidateByRange((uint32_t)color_p, DEMO_FB_SIZE);
ELCDIF_SetNextBufferAddr(LCDIF, (uint32_t)color_p);
s_framePending = true;
if (xSemaphoreTake(s_frameSema, portMAX_DELAY) == pdTRUE)
{
/* IMPORTANT!!!
* Inform the graphics library that you are ready with the flushing*/
lv_disp_flush_ready(disp_drv);
}
else
{
PRINTF("Display flush failed\r\n");
assert(0);
}
}
仅仅去修改宏/*Use NXP's PXP GPU iMX RTxxx platforms*/
#define LV_USE_GPU_NXP_PXP 1
#if LV_USE_GPU_NXP_PXP
/*1: Add default bare metal and FreeRTOS interrupt handling routines for PXP (lv_gpu_nxp_pxp_osa.c)
* and call lv_gpu_nxp_pxp_init() automatically during lv_init(). Note that symbol SDK_OS_FREE_RTOS
* has to be defined in order to use FreeRTOS OSA, otherwise bare-metal implementation is selected.
*0: lv_gpu_nxp_pxp_init() has to be called manually before lv_init()
*/
#define LV_USE_GPU_NXP_PXP_AUTO_INIT 1
#endif /* LV_USE_GPU_NXP_PXP */
也会有同样的问题，并且偏移的方向与旋转后的一致
更奇怪的是在同一个工程下会有两种不同的结果，我认为配置应该是相同的
没有发生显示偏移
发生显示偏移
