Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging
[qemu/ar7.git] / ui / sdl2-gl.c
bloba21d2deed91680299c441c017072b2aaba284c49
1 /*
2  * QEMU SDL display driver -- opengl support
3  *
4  * Copyright (c) 2014 Red Hat
5  *
6  * Authors:
7  *     Gerd Hoffmann <kraxel@redhat.com>
8  *
9  * Permission is hereby granted, free of charge, to any person obtaining a copy
10  * of this software and associated documentation files (the "Software"), to deal
11  * in the Software without restriction, including without limitation the rights
12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13  * copies of the Software, and to permit persons to whom the Software is
14  * furnished to do so, subject to the following conditions:
15  *
16  * The above copyright notice and this permission notice shall be included in
17  * all copies or substantial portions of the Software.
18  *
19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25  * THE SOFTWARE.
26  */
28 #include "qemu/osdep.h"
29 #include "ui/console.h"
30 #include "ui/input.h"
31 #include "ui/sdl2.h"
33 static void sdl2_set_scanout_mode(struct sdl2_console *scon, bool scanout)
35     if (scon->scanout_mode == scanout) {
36         return;
37     }
39     scon->scanout_mode = scanout;
40     if (!scon->scanout_mode) {
41         egl_fb_destroy(&scon->guest_fb);
42         if (scon->surface) {
43             surface_gl_destroy_texture(scon->gls, scon->surface);
44             surface_gl_create_texture(scon->gls, scon->surface);
45         }
46     }
49 static void sdl2_gl_render_surface(struct sdl2_console *scon)
51     int ww, wh;
53     SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
54     sdl2_set_scanout_mode(scon, false);
56     SDL_GetWindowSize(scon->real_window, &ww, &wh);
57     surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh);
59     surface_gl_render_texture(scon->gls, scon->surface);
60     SDL_GL_SwapWindow(scon->real_window);
61     graphic_hw_gl_flushed(scon->dcl.con);
64 void sdl2_gl_update(DisplayChangeListener *dcl,
65                     int x, int y, int w, int h)
67     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
69     assert(scon->opengl);
71     SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
72     surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h);
73     scon->updates++;
76 void sdl2_gl_switch(DisplayChangeListener *dcl,
77                     DisplaySurface *new_surface)
79     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
80     DisplaySurface *old_surface = scon->surface;
82     assert(scon->opengl);
84     SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
85     surface_gl_destroy_texture(scon->gls, scon->surface);
87     scon->surface = new_surface;
89     if (is_placeholder(new_surface) && qemu_console_get_index(dcl->con)) {
90         qemu_gl_fini_shader(scon->gls);
91         scon->gls = NULL;
92         sdl2_window_destroy(scon);
93         return;
94     }
96     if (!scon->real_window) {
97         sdl2_window_create(scon);
98         scon->gls = qemu_gl_init_shader();
99     } else if (old_surface &&
100                ((surface_width(old_surface)  != surface_width(new_surface)) ||
101                 (surface_height(old_surface) != surface_height(new_surface)))) {
102         sdl2_window_resize(scon);
103     }
105     surface_gl_create_texture(scon->gls, scon->surface);
108 void sdl2_gl_refresh(DisplayChangeListener *dcl)
110     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
112     assert(scon->opengl);
114     graphic_hw_update(dcl->con);
115     if (scon->updates && scon->real_window) {
116         scon->updates = 0;
117         sdl2_gl_render_surface(scon);
118     }
119     sdl2_poll_events(scon);
122 void sdl2_gl_redraw(struct sdl2_console *scon)
124     assert(scon->opengl);
126     if (scon->scanout_mode) {
127         /* sdl2_gl_scanout_flush actually only care about
128          * the first argument. */
129         return sdl2_gl_scanout_flush(&scon->dcl, 0, 0, 0, 0);
130     }
131     if (scon->surface) {
132         sdl2_gl_render_surface(scon);
133     }
136 QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl,
137                                      QEMUGLParams *params)
139     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
140     SDL_GLContext ctx;
142     assert(scon->opengl);
144     SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
146     SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
147     if (scon->opts->gl == DISPLAYGL_MODE_ON ||
148         scon->opts->gl == DISPLAYGL_MODE_CORE) {
149         SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
150                             SDL_GL_CONTEXT_PROFILE_CORE);
151     } else if (scon->opts->gl == DISPLAYGL_MODE_ES) {
152         SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
153                             SDL_GL_CONTEXT_PROFILE_ES);
154     }
155     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver);
156     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver);
158     ctx = SDL_GL_CreateContext(scon->real_window);
160     /* If SDL fail to create a GL context and we use the "on" flag,
161      * then try to fallback to GLES.
162      */
163     if (!ctx && scon->opts->gl == DISPLAYGL_MODE_ON) {
164         SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
165                             SDL_GL_CONTEXT_PROFILE_ES);
166         ctx = SDL_GL_CreateContext(scon->real_window);
167     }
168     return (QEMUGLContext)ctx;
171 void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
173     SDL_GLContext sdlctx = (SDL_GLContext)ctx;
175     SDL_GL_DeleteContext(sdlctx);
178 int sdl2_gl_make_context_current(DisplayChangeListener *dcl,
179                                  QEMUGLContext ctx)
181     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
182     SDL_GLContext sdlctx = (SDL_GLContext)ctx;
184     assert(scon->opengl);
186     return SDL_GL_MakeCurrent(scon->real_window, sdlctx);
189 void sdl2_gl_scanout_disable(DisplayChangeListener *dcl)
191     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
193     assert(scon->opengl);
194     scon->w = 0;
195     scon->h = 0;
196     sdl2_set_scanout_mode(scon, false);
199 void sdl2_gl_scanout_texture(DisplayChangeListener *dcl,
200                              uint32_t backing_id,
201                              bool backing_y_0_top,
202                              uint32_t backing_width,
203                              uint32_t backing_height,
204                              uint32_t x, uint32_t y,
205                              uint32_t w, uint32_t h)
207     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
209     assert(scon->opengl);
210     scon->x = x;
211     scon->y = y;
212     scon->w = w;
213     scon->h = h;
214     scon->y0_top = backing_y_0_top;
216     SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
218     sdl2_set_scanout_mode(scon, true);
219     egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height,
220                          backing_id, false);
223 void sdl2_gl_scanout_flush(DisplayChangeListener *dcl,
224                            uint32_t x, uint32_t y, uint32_t w, uint32_t h)
226     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
227     int ww, wh;
229     assert(scon->opengl);
230     if (!scon->scanout_mode) {
231         return;
232     }
233     if (!scon->guest_fb.framebuffer) {
234         return;
235     }
237     SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
239     SDL_GetWindowSize(scon->real_window, &ww, &wh);
240     egl_fb_setup_default(&scon->win_fb, ww, wh);
241     egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top);
243     SDL_GL_SwapWindow(scon->real_window);
244     graphic_hw_gl_flushed(dcl->con);