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vulkan: Implement buffer chain

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This mimics the interface from shm.h to be as close to a drop-in
replacement as possible.
This commit is contained in:
Kenny Levinsen 2024-08-04 23:38:40 +02:00
parent 42caf8b387
commit e3df9f6e1e
2 changed files with 469 additions and 2 deletions
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51
vulkan.h
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@ -17,4 +17,53 @@ struct vulkan {
};
void vulkan_destroy(struct vulkan *vk);
struct vulkan *vulkan_create(dev_t preferred_device);
struct vulkan *vulkan_create(dev_t preferred_device);
struct vk_buffer {
int fd;
uint32_t width, height, stride;
void *data;
struct wl_buffer *wl_buf;
pixman_image_t **pix;
size_t pix_instances;
unsigned age;
/*
* First item in the array is used to track frame-to-frame
* damage. This is used when re-applying damage from the last
* frame, when the compositor doesn't release buffers immediately
* (forcing us to double buffer)
*
* The remaining items are used to track surface damage. Each
* worker thread adds its own cell damage to "its" region. When
* the frame is done, all damage is converted to a single region,
* which is then used in calls to wl_surface_damage_buffer().
*/
pixman_region32_t *dirty;
};
struct vk_buffer_chain;
struct vk_buffer_chain *vk_chain_new(struct vulkan *vk, struct zwp_linux_dmabuf_v1 *linux_dmabuf_v1, bool scrollable, size_t pix_instances);
void vk_chain_free(struct vk_buffer_chain *chain);
struct vk_buffer *vk_get_buffer(struct vk_buffer_chain *chain, int wdth, int height, bool with_alpha);
void vk_get_many(
struct vk_buffer_chain *chain, size_t count,
int widths[static count], int heights[static count],
struct vk_buffer *bufs[static count], bool with_alpha);
void vk_did_not_use_buf(struct vk_buffer *buf);
bool vk_can_scroll(const struct vk_buffer *buf);
bool vk_scroll(struct vk_buffer *buf, int rows,
int top_margin, int top_keep_rows,
int bottom_margin, int bottom_keep_rows);
void vk_addref(struct vk_buffer *buf);
void vk_unref(struct vk_buffer *buf);
void vk_purge(struct vk_buffer_chain *chain);