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output: check buffer in wlr_output_test

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Check that buffer can be scanned out in wlr_output_test instead of
wlr_output_attach_buffer. This allows the backend to have access to the
whole pending state when performing the check.

This brings the wlr_output API more in line with the KMS API.

This removes the need for wlr_output_attach_buffer to return a value,
and for wlr_output_impl.attach_buffer.
This commit is contained in:
Simon Ser 2020-04-02 14:12:26 +02:00 • committed by Drew DeVault
parent e041158988
commit 6977f3a843
7 changed files with 122 additions and 115 deletions
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1
include/wlr/interfaces/wlr_output.h
View file

@ -28,7 +28,6 @@ struct wlr_output_impl {
size_t (*get_gamma_size)(struct wlr_output *output);
bool (*export_dmabuf)(struct wlr_output *output,
struct wlr_dmabuf_attributes *attribs);
bool (*attach_buffer)(struct wlr_output *output, struct wlr_buffer *buffer);
};
void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,

5
include/wlr/types/wlr_output.h
View file

@ -314,8 +314,11 @@ bool wlr_output_attach_render(struct wlr_output *output, int *buffer_age);
/**
* Attach a buffer to the output. Compositors should call `wlr_output_commit`
* to submit the new frame. The output needs to be enabled.
*
* Not all backends support direct scan-out on all buffers. Compositors can
* check whether a buffer is supported by calling `wlr_output_test`.
*/
bool wlr_output_attach_buffer(struct wlr_output *output,
void wlr_output_attach_buffer(struct wlr_output *output,
struct wlr_buffer *buffer);
/**
* Get the preferred format for reading pixels.