56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <xf86drm.h>
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#include <sys/mman.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#define CURSOR_WIDTH 64
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#define CURSOR_HEIGHT 64
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int main(int argc, const char **argv)
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{
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int fd = open("/dev/dri/card0", O_RDWR | O_CLOEXEC);
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int width = CURSOR_WIDTH;
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int height = CURSOR_HEIGHT;
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int crtc_id = 0;
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struct drm_mode_create_dumb create_arg = {
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.width = width,
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.height = height,
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.bpp = 32,
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};
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drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg);
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int handle = create_arg.handle;
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int size = create_arg.size;
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struct drm_mode_map_dumb map_arg = {
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.handle = handle,
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};
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drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
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int *ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED,
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fd, map_arg.offset);
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for (int i = 0; i < width * height; i++)
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ptr[i] = 0x4F000000 | (i % width) * 2 << 16 | (i / height) << 8;
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if (argc > 1)
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crtc_id = atoi(argv[1]);
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if (argc > 2)
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setenv("DRM_CURSOR_PREFER_PLANE", argv[2], 1);
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drmModeSetCursor(fd, crtc_id, handle, width, height);
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for (int i = 0; i < 100000; i++) {
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drmModeMoveCursor(fd, crtc_id, i % 1024, i % 1024);
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usleep(100000);
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}
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return 0;
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}
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