vo_opengl: refactor into vo_gpu

This is done in several steps:

1. refactor MPGLContext -> struct ra_ctx
2. move GL-specific stuff in vo_opengl into opengl/context.c
3. generalize context creation to support other APIs, and add --gpu-api
4. rename all of the --opengl- options that are no longer opengl-specific
5. move all of the stuff from opengl/* that isn't GL-specific into gpu/
   (note: opengl/gl_utils.h became opengl/utils.h)
6. rename vo_opengl to vo_gpu
7. to handle window screenshots, the short-term approach was to just add
   it to ra_swchain_fns. Long term (and for vulkan) this has to be moved to
   ra itself (and vo_gpu altered to compensate), but this was a stop-gap
   measure to prevent this commit from getting too big
8. move ra->fns->flush to ra_gl_ctx instead
9. some other minor changes that I've probably already forgotten

Note: This is one half of a major refactor, the other half of which is
provided by rossy's following commit. This commit enables support for
all linux platforms, while his version enables support for all non-linux
platforms.

Note 2: vo_opengl_cb.c also re-uses ra_gl_ctx so it benefits from the
--opengl- options like --opengl-early-flush, --opengl-finish etc. Should
be a strict superset of the old functionality.

Disclaimer: Since I have no way of compiling mpv on all platforms, some
of these ports were done blindly. Specifically, the blind ports included
context_mali_fbdev.c and context_rpi.c. Since they're both based on
egl_helpers, the port should have gone smoothly without any major
changes required. But if somebody complains about a compile error on
those platforms (assuming anybody actually uses them), you know where to
complain.

1 files changed, 0 insertions, 56 deletions

diff --git a/video/out/opengl/gl_utils.h b/video/out/opengl/gl_utils.h
deleted file mode 100644
index 306ee23f65..0000000000
--- a/video/out/opengl/gl_utils.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * This file is part of mpv.
- * Parts based on MPlayer code by Reimar Döffinger.
- *
- * mpv is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * mpv is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef MP_GL_UTILS_
-#define MP_GL_UTILS_
-
-#include <math.h>
-
-#include "common.h"
-#include "ra.h"
-
-struct mp_log;
-
-void gl_check_error(GL *gl, struct mp_log *log, const char *info);
-
-void gl_upload_tex(GL *gl, GLenum target, GLenum format, GLenum type,
-                   const void *dataptr, int stride,
-                   int x, int y, int w, int h);
-
-mp_image_t *gl_read_fbo_contents(GL *gl, int fbo, int w, int h);
-
-struct gl_vao {
-    GL *gl;
-    GLuint vao;     // the VAO object, or 0 if unsupported by driver
-    GLuint buffer;  // GL_ARRAY_BUFFER used for the data
-    int stride;     // size of each element (interleaved elements are assumed)
-    const struct ra_renderpass_input *entries;
-    int num_entries;
-};
-
-void gl_vao_init(struct gl_vao *vao, GL *gl, int stride,
-                 const struct ra_renderpass_input *entries,
-                 int num_entries);
-void gl_vao_uninit(struct gl_vao *vao);
-void gl_vao_draw_data(struct gl_vao *vao, GLenum prim, void *ptr, size_t num);
-
-void gl_set_debug_logger(GL *gl, struct mp_log *log);
-
-int gl_get_fb_depth(GL *gl, int fbo);
-
-#endif