Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20170103-1' into staging
[qemu.git] / ui / sdl2-2d.c
1 /*
2 * QEMU SDL display driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 /* Ported SDL 1.2 code to 2.0 by Dave Airlie. */
25
26 #include "qemu/osdep.h"
27 #include "qemu-common.h"
28 #include "ui/console.h"
29 #include "ui/input.h"
30 #include "ui/sdl2.h"
31 #include "sysemu/sysemu.h"
32
33 void sdl2_2d_update(DisplayChangeListener *dcl,
34 int x, int y, int w, int h)
35 {
36 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
37 DisplaySurface *surf = qemu_console_surface(dcl->con);
38 SDL_Rect rect;
39
40 assert(!scon->opengl);
41
42 if (!surf) {
43 return;
44 }
45 if (!scon->texture) {
46 return;
47 }
48
49 /*
50 * SDL2 seems to do some double-buffering, and trying to only
51 * update the changed areas results in only one of the two buffers
52 * being updated. Which flickers alot. So lets not try to be
53 * clever do a full update every time ...
54 */
55 #if 0
56 rect.x = x;
57 rect.y = y;
58 rect.w = w;
59 rect.h = h;
60 #else
61 rect.x = 0;
62 rect.y = 0;
63 rect.w = surface_width(surf);
64 rect.h = surface_height(surf);
65 #endif
66
67 SDL_UpdateTexture(scon->texture, NULL, surface_data(surf),
68 surface_stride(surf));
69 SDL_RenderCopy(scon->real_renderer, scon->texture, &rect, &rect);
70 SDL_RenderPresent(scon->real_renderer);
71 }
72
73 void sdl2_2d_switch(DisplayChangeListener *dcl,
74 DisplaySurface *new_surface)
75 {
76 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
77 DisplaySurface *old_surface = scon->surface;
78 int format = 0;
79
80 assert(!scon->opengl);
81
82 scon->surface = new_surface;
83
84 if (scon->texture) {
85 SDL_DestroyTexture(scon->texture);
86 scon->texture = NULL;
87 }
88
89 if (!new_surface) {
90 sdl2_window_destroy(scon);
91 return;
92 }
93
94 if (!scon->real_window) {
95 sdl2_window_create(scon);
96 } else if (old_surface &&
97 ((surface_width(old_surface) != surface_width(new_surface)) ||
98 (surface_height(old_surface) != surface_height(new_surface)))) {
99 sdl2_window_resize(scon);
100 }
101
102 SDL_RenderSetLogicalSize(scon->real_renderer,
103 surface_width(new_surface),
104 surface_height(new_surface));
105
106 switch (surface_format(scon->surface)) {
107 case PIXMAN_x1r5g5b5:
108 format = SDL_PIXELFORMAT_ARGB1555;
109 break;
110 case PIXMAN_r5g6b5:
111 format = SDL_PIXELFORMAT_RGB565;
112 break;
113 case PIXMAN_x8r8g8b8:
114 format = SDL_PIXELFORMAT_ARGB8888;
115 break;
116 case PIXMAN_r8g8b8x8:
117 format = SDL_PIXELFORMAT_RGBA8888;
118 break;
119 case PIXMAN_b8g8r8x8:
120 format = SDL_PIXELFORMAT_BGRX8888;
121 break;
122 default:
123 g_assert_not_reached();
124 }
125 scon->texture = SDL_CreateTexture(scon->real_renderer, format,
126 SDL_TEXTUREACCESS_STREAMING,
127 surface_width(new_surface),
128 surface_height(new_surface));
129 sdl2_2d_redraw(scon);
130 }
131
132 void sdl2_2d_refresh(DisplayChangeListener *dcl)
133 {
134 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
135
136 assert(!scon->opengl);
137 graphic_hw_update(dcl->con);
138 sdl2_poll_events(scon);
139 }
140
141 void sdl2_2d_redraw(struct sdl2_console *scon)
142 {
143 assert(!scon->opengl);
144
145 if (!scon->surface) {
146 return;
147 }
148 sdl2_2d_update(&scon->dcl, 0, 0,
149 surface_width(scon->surface),
150 surface_height(scon->surface));
151 }
152
153 bool sdl2_2d_check_format(DisplayChangeListener *dcl,
154 pixman_format_code_t format)
155 {
156 /*
157 * We let SDL convert for us a few more formats than,
158 * the native ones. Thes are the ones I have tested.
159 */
160 return (format == PIXMAN_x8r8g8b8 ||
161 format == PIXMAN_b8g8r8x8 ||
162 format == PIXMAN_x1r5g5b5 ||
163 format == PIXMAN_r5g6b5);
164 }