94 lines
2.9 KiB
C
94 lines
2.9 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/wlr_output.h>
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struct wlr_texture;
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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 texture handle from this renderer.
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*/
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struct wlr_texture *wlr_render_texture_init(struct wlr_renderer *r);
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/**
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* Renders the requested texture using the provided matrix. A typical texture
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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_texture *texture;
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* float projection[16];
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* float matrix[16];
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* wlr_texture_get_matrix(texture, &matrix, &projection, 123, 321);
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* wlr_render_with_matrix(renderer, texture, &matrix);
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*
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* This will render the texture 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_texture *texture, const float (*matrix)[16]);
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/**
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* Renders a solid quad in the specified color.
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*/
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void wlr_render_colored_quad(struct wlr_renderer *r,
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const float (*color)[4], const float (*matrix)[16]);
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/**
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* Renders a solid ellipse in the specified color.
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*/
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void wlr_render_colored_ellipse(struct wlr_renderer *r,
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const float (*color)[4], const float (*matrix)[16]);
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/**
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* Returns a list of pixel formats supported by this renderer.
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*/
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const enum wl_shm_format *wlr_renderer_get_formats(
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struct wlr_renderer *r, size_t *len);
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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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struct wlr_texture_impl;
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struct wlr_texture_state;
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struct wlr_texture {
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struct wlr_texture_impl *impl;
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struct wlr_texture_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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struct wl_signal destroy_signal;
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struct wl_resource *resource;
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};
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/**
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* Uploads a pixel buffer to this texture. The buffer may be discarded after
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* calling this function.
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*/
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bool wlr_texture_upload_pixels(struct wlr_texture *surf,
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enum wl_shm_format format, int stride, int width, int height,
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const unsigned char *pixels);
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/**
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* Uploads pixels from a wl_shm_buffer to this texture. The shm buffer may be
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* invalidated after calling this function.
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*/
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bool wlr_texture_upload_shm(struct wlr_texture *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 texture 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_texture_get_matrix(struct wlr_texture *texture,
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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_texture.
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*/
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void wlr_texture_destroy(struct wlr_texture *texture);
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#endif
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