diff options
| -rw-r--r-- | minuitwrp/graphics_fbdev.cpp | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/minuitwrp/graphics_fbdev.cpp b/minuitwrp/graphics_fbdev.cpp index dc2bb2fdc..afc4151c9 100644 --- a/minuitwrp/graphics_fbdev.cpp +++ b/minuitwrp/graphics_fbdev.cpp @@ -282,15 +282,24 @@ static GRSurface* fbdev_flip(minui_backend* backend __unused) { if (double_buffered) gr_active_fb = 1-displayed_buffer; - /* flip buffer 180 degrees for devices with physicaly inverted screens */ - unsigned int i, j; - for (i = 0; i < vi.yres; i++) { - for (j = 0; j < vi.xres; j++) { - memcpy(gr_framebuffer[gr_active_fb].data + (i * vi.xres_virtual + j) * gr_framebuffer[0].pixel_bytes, - gr_draw->data + ((vi.yres - i - 1) * vi.xres_virtual + vi.xres - j - 1) * gr_framebuffer[0].pixel_bytes, - gr_framebuffer[0].pixel_bytes); + /* flip buffer 180 degrees for devices with physically inverted screens */ + unsigned int row_pixels = gr_draw->row_bytes / gr_framebuffer[0].pixel_bytes; + if (gr_framebuffer[0].pixel_bytes == 4) { + for (unsigned int y = 0; y < gr_draw->height; ++y) { + uint32_t* dst = reinterpret_cast<uint32_t*>(gr_framebuffer[gr_active_fb].data) + y * row_pixels; + uint32_t* src = reinterpret_cast<uint32_t*>(gr_draw->data) + (gr_draw->height - y - 1) * row_pixels + gr_draw->width; + for (unsigned int x = 0; x < gr_draw->width; ++x) + *(dst++) = *(--src); + } + } else { + for (unsigned int y = 0; y < gr_draw->height; ++y) { + uint16_t* dst = reinterpret_cast<uint16_t*>(gr_framebuffer[gr_active_fb].data) + y * row_pixels; + uint16_t* src = reinterpret_cast<uint16_t*>(gr_draw->data) + (gr_draw->height - y - 1) * row_pixels + gr_draw->width; + for (unsigned int x = 0; x < gr_draw->width; ++x) + *(dst++) = *(--src); } } + if (double_buffered) set_displayed_framebuffer(1-displayed_buffer); #endif |