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Implement partial texture uploads

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This commit is contained in:
Drew DeVault 2017-08-09 22:17:40 -04:00
parent b109aecff9
commit 4de930542f
5 changed files with 100 additions and 6 deletions
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24
include/wlr/render.h
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@ -62,18 +62,34 @@ struct wlr_texture {
};
/**
* Uploads a pixel buffer to this texture. The buffer may be discarded after
* calling this function.
* Copies pixels to this texture. The buffer is not accessed after this function
* returns.
*/
bool wlr_texture_upload_pixels(struct wlr_texture *surf,
enum wl_shm_format format, int stride, int width, int height,
const unsigned char *pixels);
/**
* Uploads pixels from a wl_shm_buffer to this texture. The shm buffer may be
* invalidated after calling this function.
* Copies pixels to this texture. The buffer is not accessed after this function
* returns. Under some circumstances, this function may re-upload the entire
* buffer - therefore, the entire buffer must be valid.
*/
bool wlr_texture_update_pixels(struct wlr_texture *surf,
enum wl_shm_format format, int stride, int x, int y,
int width, int height, const unsigned char *pixels);
/**
* Copies pixels from a wl_shm_buffer into this texture. The buffer is not
* accessed after this function returns.
*/
bool wlr_texture_upload_shm(struct wlr_texture *surf, uint32_t format,
struct wl_shm_buffer *shm);
/**
* Copies a rectangle of pixels from a wl_shm_buffer onto the texture. The
* buffer is not accessed after this function returns. Under some circumstances,
* this function may re-upload the entire buffer - therefore, the entire buffer
* must be valid.
*/
bool wlr_texture_update_shm(struct wlr_texture *surf, uint32_t format,
int x, int y, int width, int height, struct wl_shm_buffer *shm);
/**
* Prepares a matrix with the appropriate scale for the given texture and
* multiplies it with the projection, producing a matrix that the shader can

5
include/wlr/render/interface.h
View file

@ -35,8 +35,13 @@ struct wlr_texture_impl {
bool (*upload_pixels)(struct wlr_texture_state *state,
enum wl_shm_format format, int stride, int width, int height,
const unsigned char *pixels);
bool (*update_pixels)(struct wlr_texture_state *state,
enum wl_shm_format format, int stride, int x, int y,
int width, int height, const unsigned char *pixels);
bool (*upload_shm)(struct wlr_texture_state *state, uint32_t format,
struct wl_shm_buffer *shm);
bool (*update_shm)(struct wlr_texture_state *surf, uint32_t format,
int x, int y, int width, int height, struct wl_shm_buffer *shm);
// TODO: egl
void (*get_matrix)(struct wlr_texture_state *state,
float (*matrix)[16], const float (*projection)[16], int x, int y);