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-common.h"
  27 #include "ui/console.h"
  28 #include "ui/input.h"
  29 #include "ui/sdl2.h"
  30 #include "sysemu/sysemu.h"
  31
  32 void sdl2_2d_update(DisplayChangeListener *dcl,
  33                     int x, int y, int w, int h)
  34 {
  35     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
  36     DisplaySurface *surf = qemu_console_surface(dcl->con);
  37     SDL_Rect rect;
  38
  39     assert(!scon->opengl);
  40
  41     if (!surf) {
  42         return;
  43     }
  44     if (!scon->texture) {
  45         return;
  46     }
  47
  48     rect.x = x;
  49     rect.y = y;
  50     rect.w = w;
  51     rect.h = h;
  52
  53     SDL_UpdateTexture(scon->texture, NULL, surface_data(surf),
  54                       surface_stride(surf));
  55     SDL_RenderCopy(scon->real_renderer, scon->texture, &rect, &rect);
  56     SDL_RenderPresent(scon->real_renderer);
  57 }
  58
  59 void sdl2_2d_switch(DisplayChangeListener *dcl,
  60                     DisplaySurface *new_surface)
  61 {
  62     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
  63     DisplaySurface *old_surface = scon->surface;
  64     int format = 0;
  65
  66     assert(!scon->opengl);
  67
  68     scon->surface = new_surface;
  69
  70     if (scon->texture) {
  71         SDL_DestroyTexture(scon->texture);
  72         scon->texture = NULL;
  73     }
  74
  75     if (!new_surface) {
  76         sdl2_window_destroy(scon);
  77         return;
  78     }
  79
  80     if (!scon->real_window) {
  81         sdl2_window_create(scon);
  82     } else if (old_surface &&
  83                ((surface_width(old_surface)  != surface_width(new_surface)) ||
  84                 (surface_height(old_surface) != surface_height(new_surface)))) {
  85         sdl2_window_resize(scon);
  86     }
  87
  88     SDL_RenderSetLogicalSize(scon->real_renderer,
  89                              surface_width(new_surface),
  90                              surface_height(new_surface));
  91
  92     switch (surface_format(scon->surface)) {
  93     case PIXMAN_x1r5g5b5:
  94         format = SDL_PIXELFORMAT_ARGB1555;
  95         break;
  96     case PIXMAN_r5g6b5:
  97         format = SDL_PIXELFORMAT_RGB565;
  98         break;
  99     case PIXMAN_x8r8g8b8:
 100         format = SDL_PIXELFORMAT_ARGB8888;
 101         break;
 102     case PIXMAN_r8g8b8x8:
 103         format = SDL_PIXELFORMAT_RGBA8888;
 104         break;
 105     default:
 106         g_assert_not_reached();
 107     }
 108     scon->texture = SDL_CreateTexture(scon->real_renderer, format,
 109                                       SDL_TEXTUREACCESS_STREAMING,
 110                                       surface_width(new_surface),
 111                                       surface_height(new_surface));
 112     sdl2_2d_redraw(scon);
 113 }
 114
 115 void sdl2_2d_refresh(DisplayChangeListener *dcl)
 116 {
 117     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 118
 119     assert(!scon->opengl);
 120     graphic_hw_update(dcl->con);
 121     sdl2_poll_events(scon);
 122 }
 123
 124 void sdl2_2d_redraw(struct sdl2_console *scon)
 125 {
 126     assert(!scon->opengl);
 127
 128     if (!scon->surface) {
 129         return;
 130     }
 131     sdl2_2d_update(&scon->dcl, 0, 0,
 132                    surface_width(scon->surface),
 133                    surface_height(scon->surface));
 134 }
 135
 136 bool sdl2_2d_check_format(DisplayChangeListener *dcl,
 137                           pixman_format_code_t format)
 138 {
 139     /*
 140      * We let SDL convert for us a few more formats than,
 141      * the native ones. Thes are the ones I have tested.
 142      */
 143     return (format == PIXMAN_x8r8g8b8 ||
 144             format == PIXMAN_b8g8r8x8 ||
 145             format == PIXMAN_x1r5g5b5 ||
 146             format == PIXMAN_r5g6b5);
 147 }