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75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
#ifndef _WLR_RENDER_H
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#define _WLR_RENDER_H
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#include <stdint.h>
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#include <wayland-server-protocol.h>
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#include <wlr/types.h>
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struct wlr_surface;
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struct wlr_renderer;
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void wlr_renderer_begin(struct wlr_renderer *r, struct wlr_output *output);
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void wlr_renderer_end(struct wlr_renderer *r);
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/**
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* Requests a surface handle from this renderer.
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*/
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struct wlr_surface *wlr_render_surface_init(struct wlr_renderer *r);
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/**
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* Renders the requested surface using the provided matrix. A typical surface
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* rendering goes like so:
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*
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* struct wlr_renderer *renderer;
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* struct wlr_surface *surface;
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* float projection[16];
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* float matrix[16];
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* wlr_surface_get_matrix(surface, &matrix, &projection, 123, 321);
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* wlr_render_with_matrix(renderer, surface, &matrix);
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*
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* This will render the surface at <123, 321>.
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*/
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bool wlr_render_with_matrix(struct wlr_renderer *r,
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struct wlr_surface *surface, const float (*matrix)[16]);
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/**
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* Destroys this wlr_renderer. Surfaces must be destroyed separately.
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*/
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void wlr_renderer_destroy(struct wlr_renderer *renderer);
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struct wlr_surface_impl;
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struct wlr_surface_state;
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struct wlr_surface {
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struct wlr_surface_impl *impl;
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struct wlr_surface_state *state;
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bool valid;
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uint32_t format;
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int width, height;
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};
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/**
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* Attaches a pixel buffer to this surface. The buffer may be discarded after
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* calling this function.
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*/
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bool wlr_surface_attach_pixels(struct wlr_surface *surf, uint32_t format,
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int width, int height, const unsigned char *pixels);
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/**
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* Attaches pixels from a wl_shm_buffer to this surface. The shm buffer may be
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* invalidated after calling this function.
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*/
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bool wlr_surface_attach_shm(struct wlr_surface *surf, uint32_t format,
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struct wl_shm_buffer *shm);
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/**
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* Prepares a matrix with the appropriate scale for the given surface and
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* multiplies it with the projection, producing a matrix that the shader can
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* muptlipy vertex coordinates with to get final screen coordinates.
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*
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* The projection matrix is assumed to be an orthographic projection of [0,
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* width) and [0, height], and the x and y coordinates provided are used as
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* such.
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*/
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void wlr_surface_get_matrix(struct wlr_surface *surface,
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float (*matrix)[16], const float (*projection)[16], int x, int y);
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/**
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* Destroys this wlr_surface.
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*/
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void wlr_surface_destroy(struct wlr_surface *tex);
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#endif
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