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output: add wlr_output_state_init()

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This changes the semantics of wlr_output_state. Instead of having
fields with uninitialized memory when missing from the committed
bitflag, all fields are always initialized (and maybe NULL/empty),
just like we do in wlr_surface_state. This reduces the chances of
footguns when reading a field, and removes the need to check for
the committed bitfield everywhere.

A new wlr_output_state_init() function takes care of initializing
the Pixman region.
This commit is contained in:
Simon Ser 2023-06-22 15:48:35 +02:00 • committed by Alexander Orzechowski
parent 8a5b5e6f28
commit be05097968
19 changed files with 103 additions and 103 deletions
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8
include/wlr/types/wlr_output.h
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@ -88,10 +88,8 @@ struct wlr_output_state {
uint32_t render_format;
enum wl_output_subpixel subpixel;
// only valid if WLR_OUTPUT_STATE_BUFFER
struct wlr_buffer *buffer;
// only valid if WLR_OUTPUT_STATE_MODE
enum wlr_output_state_mode_type mode_type;
struct wlr_output_mode *mode;
struct {
@ -99,11 +97,9 @@ struct wlr_output_state {
int32_t refresh; // mHz, may be zero
} custom_mode;
// only valid if WLR_OUTPUT_STATE_GAMMA_LUT
uint16_t *gamma_lut;
size_t gamma_lut_size;
// only valid if WLR_OUTPUT_STATE_LAYERS
struct wlr_output_layer_state *layers;
size_t layers_len;
};
@ -567,6 +563,10 @@ bool wlr_output_cursor_move(struct wlr_output_cursor *cursor,
double x, double y);
void wlr_output_cursor_destroy(struct wlr_output_cursor *cursor);
/**
* Initialize an output state.
*/
void wlr_output_state_init(struct wlr_output_state *state);
/**
* Releases all resources associated with an output state.
*/