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gl-renderer: implement basic gl-renderer-api
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| /* | ||
| * Copyright © 2017 Ilia Bozhinov | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining | ||
| * a copy of this software and associated documentation files (the | ||
| * "Software"), to deal in the Software without restriction, including | ||
| * without limitation the rights to use, copy, modify, merge, publish, | ||
| * distribute, sublicense, and/or sell copies of the Software, and to | ||
| * permit persons to whom the Software is furnished to do so, subject to | ||
| * the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice (including the | ||
| * next paragraph) shall be included in all copies or substantial | ||
| * portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | ||
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | ||
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
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| #ifndef WESTON_GL_RENDERER_API_H | ||
| #define WESTON_GL_RENDERER_API_H | ||
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
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| #include "plugin-registry.h" | ||
| #include <stdbool.h> | ||
| #include <pixman.h> | ||
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| struct weston_compositor; | ||
| struct weston_output; | ||
| struct weston_surface; | ||
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| #define WESTON_GL_RENDERER_API_NAME "weston_gl_renderer_api_v1" | ||
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| typedef bool (*custom_renderer_func_t) (struct weston_output*, pixman_region32_t*); | ||
| typedef void (*post_render_func_t) (struct weston_output*); | ||
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| struct weston_gl_renderer_api { | ||
| /* Set custom renderer function | ||
| * | ||
| * \param ec The compositor instance | ||
| * \param renderer The function which should be called at each repaint cycle | ||
| * | ||
| * The renderer function should return true if it has painted the output and the | ||
| * in-built gl-renderer should leave the output as is. Otherwise, the gl-renderer proceeds | ||
| * as if there is no custom renderer. | ||
| */ | ||
| void (*set_custom_renderer) (struct weston_compositor *ec, custom_renderer_func_t renderer); | ||
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| /* Set custom post-renderer function | ||
| * | ||
| * \param ec The compositor instance | ||
| * \param post The function which should be called right after each repaint | ||
| * | ||
| * The post function is called after each rendered frame, regardless of whether | ||
| * a custom renderer or the in-built gl-renderer was used | ||
| */ | ||
| void (*set_post_render) (struct weston_compositor *ec, post_render_func_t post); | ||
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| /* Schedule output repaint | ||
| * | ||
| * \param output The output for which a repaint is to be scheduled | ||
| * | ||
| * Unlike weston_output_schedule_repaint, this function must ensure that | ||
| * the gl-renderer will be invoked at the next frame. Useful when used together | ||
| * with custom renderer/post function, as it must bypass any optimizations in | ||
| * the drm-backend | ||
| */ | ||
| void (*schedule_repaint) (struct weston_output *output); | ||
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| /* Get the gl-renderer's textures for a given surface | ||
| * | ||
| * \param surface The surface whose textures are queried | ||
| * \param n_tex The number of textures for this surface | ||
| */ | ||
| void* (*surface_get_textures)(struct weston_surface *surface, int *n_tex); | ||
| }; | ||
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| static inline const struct weston_gl_renderer_api * | ||
| weston_gl_renderer_get_api(struct weston_compositor *compositor) | ||
| { | ||
| const void *api; | ||
| api = weston_plugin_api_get(compositor, WESTON_GL_RENDERER_API_NAME, | ||
| sizeof(struct weston_gl_renderer_api)); | ||
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| return (const struct weston_gl_renderer_api *)api; | ||
| } | ||
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| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
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| #endif /* WESTON_GL_RENDERER_API_H */ |
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