128 lines
4.0 KiB
C
128 lines
4.0 KiB
C
/*
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* This an unstable interface of wlroots. No guarantees are made regarding the
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* future consistency of this API.
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*/
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#ifndef WLR_USE_UNSTABLE
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#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
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#endif
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#ifndef WLR_RENDER_WLR_RENDERER_H
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#define WLR_RENDER_WLR_RENDERER_H
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#include <stdint.h>
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#include <wayland-server-core.h>
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#include <wlr/backend.h>
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#include <wlr/render/wlr_texture.h>
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enum wlr_renderer_read_pixels_flags {
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WLR_RENDERER_READ_PIXELS_Y_INVERT = 1,
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};
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struct wlr_renderer_impl;
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struct wlr_drm_format_set;
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struct wlr_buffer;
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struct wlr_box;
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struct wlr_fbox;
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struct wlr_renderer {
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const struct wlr_renderer_impl *impl;
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bool rendering;
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bool rendering_with_buffer;
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struct {
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struct wl_signal destroy;
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} events;
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};
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struct wlr_renderer *wlr_renderer_autocreate(struct wlr_backend *backend);
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void wlr_renderer_begin(struct wlr_renderer *r, uint32_t width, uint32_t height);
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bool wlr_renderer_begin_with_buffer(struct wlr_renderer *r,
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struct wlr_buffer *buffer);
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void wlr_renderer_end(struct wlr_renderer *r);
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void wlr_renderer_clear(struct wlr_renderer *r, const float color[static 4]);
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/**
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* Defines a scissor box. Only pixels that lie within the scissor box can be
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* modified by drawing functions. Providing a NULL `box` disables the scissor
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* box.
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*/
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void wlr_renderer_scissor(struct wlr_renderer *r, struct wlr_box *box);
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/**
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* Renders the requested texture.
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*/
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bool wlr_render_texture(struct wlr_renderer *r, struct wlr_texture *texture,
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const float projection[static 9], int x, int y, float alpha);
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/**
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* Renders the requested texture using the provided matrix.
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*/
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bool wlr_render_texture_with_matrix(struct wlr_renderer *r,
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struct wlr_texture *texture, const float matrix[static 9], float alpha);
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/**
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* Renders the requested texture using the provided matrix, after cropping it
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* to the provided rectangle.
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*/
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bool wlr_render_subtexture_with_matrix(struct wlr_renderer *r,
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struct wlr_texture *texture, const struct wlr_fbox *box,
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const float matrix[static 9], float alpha);
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/**
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* Renders a solid rectangle in the specified color.
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*/
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void wlr_render_rect(struct wlr_renderer *r, const struct wlr_box *box,
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const float color[static 4], const float projection[static 9]);
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/**
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* Renders a solid quadrangle in the specified color with the specified matrix.
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*/
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void wlr_render_quad_with_matrix(struct wlr_renderer *r,
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const float color[static 4], const float matrix[static 9]);
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/**
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* Get the shared-memory formats supporting import usage. Buffers allocated
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* with a format from this list may be imported via wlr_texture_from_pixels.
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*/
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const uint32_t *wlr_renderer_get_shm_texture_formats(
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struct wlr_renderer *r, size_t *len);
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/**
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* Get the DMA-BUF formats supporting sampling usage. Buffers allocated with
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* a format from this list may be imported via wlr_texture_from_dmabuf.
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*/
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const struct wlr_drm_format_set *wlr_renderer_get_dmabuf_texture_formats(
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struct wlr_renderer *renderer);
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/**
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* Reads out of pixels of the currently bound surface into data. `stride` is in
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* bytes.
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*
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* If `flags` is not NULl, the caller indicates that it accepts frame flags
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* defined in `enum wlr_renderer_read_pixels_flags`.
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*/
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bool wlr_renderer_read_pixels(struct wlr_renderer *r, uint32_t fmt,
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uint32_t *flags, uint32_t stride, uint32_t width, uint32_t height,
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uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y, void *data);
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/**
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* Initializes wl_shm, linux-dmabuf and other buffer factory protocols.
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*
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* Returns false on failure.
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*/
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bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
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struct wl_display *wl_display);
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/**
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* Initializes wl_shm on the provided wl_display.
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*/
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bool wlr_renderer_init_wl_shm(struct wlr_renderer *r,
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struct wl_display *wl_display);
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/**
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* Obtains the FD of the DRM device used for rendering, or -1 if unavailable.
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*
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* The caller doesn't have ownership of the FD, it must not close it.
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*/
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int wlr_renderer_get_drm_fd(struct wlr_renderer *r);
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/**
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* Destroys this wlr_renderer. Textures must be destroyed separately.
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*/
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void wlr_renderer_destroy(struct wlr_renderer *renderer);
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#endif
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