80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
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#include <drmP.h>
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#include <drm.h>
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#include "radeon_drm.h"
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#include "../radeon.h"
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#include "../display.h"
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extern struct radeon_device *main_device;
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typedef struct
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{
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kobj_t header;
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int width;
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int height;
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int stride;
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uint64_t gaddr;
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void *uaddr;
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struct radeon_bo *robj;
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}bitmap_t;
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int create_bitmap(bitmap_t **pbitmap, int width, int height)
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{
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size_t size;
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size_t pitch;
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bitmap_t *bitmap;
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uint64_t gaddr;
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void *uaddr;
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struct radeon_device *rdev = main_device;
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struct radeon_bo *sobj = NULL;
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int r;
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bitmap = CreateObject(GetPid(), sizeof(bitmap_t));
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if( bitmap == NULL)
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{
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*pbitmap = NULL;
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return -1;
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}
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pitch = radeon_align_pitch(rdev, width, 32, false) * 4;
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size = pitch * height;
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r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
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RADEON_GEM_DOMAIN_GTT, &sobj);
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if (r) {
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goto fail;
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}
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r = radeon_bo_reserve(sobj, false);
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if (unlikely(r != 0))
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goto fail;
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r = radeon_bo_pin(sobj, RADEON_GEM_DOMAIN_GTT, &gaddr);
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if (r) {
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goto fail;
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}
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r = radeon_bo_user_map(sobj, &uaddr);
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if (r) {
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goto fail;
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}
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bitmap->width = width;
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bitmap->height = height;
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bitmap->stride = pitch;
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bitmap->gaddr = gaddr;
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bitmap->uaddr = uaddr;
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bitmap->robj = sobj;
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*pbitmap = bitmap;
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return 0;
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fail:
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DestroyObject(bitmap);
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return -1;
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};
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