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 "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     size_t surface_data_offset;
  39     assert(!scon->opengl);
  40
  41     if (!surf) {
  42         return;
  43     }
  44     if (!scon->texture) {
  45         return;
  46     }
  47
  48     surface_data_offset = surface_bytes_per_pixel(surf) * x +
  49                           surface_stride(surf) * y;
  50     rect.x = x;
  51     rect.y = y;
  52     rect.w = w;
  53     rect.h = h;
  54
  55     SDL_UpdateTexture(scon->texture, &rect,
  56                       surface_data(surf) + surface_data_offset,
  57                       surface_stride(surf));
  58     SDL_RenderClear(scon->real_renderer);
  59     SDL_RenderCopy(scon->real_renderer, scon->texture, NULL, NULL);
  60     SDL_RenderPresent(scon->real_renderer);
  61 }
  62
  63 void sdl2_2d_switch(DisplayChangeListener *dcl,
  64                     DisplaySurface *new_surface)
  65 {
  66     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
  67     DisplaySurface *old_surface = scon->surface;
  68     int format = 0;
  69
  70     assert(!scon->opengl);
  71
  72     scon->surface = new_surface;
  73
  74     if (scon->texture) {
  75         SDL_DestroyTexture(scon->texture);
  76         scon->texture = NULL;
  77     }
  78
  79     if (!new_surface) {
  80         sdl2_window_destroy(scon);
  81         return;
  82     }
  83
  84     if (!scon->real_window) {
  85         sdl2_window_create(scon);
  86     } else if (old_surface &&
  87                ((surface_width(old_surface)  != surface_width(new_surface)) ||
  88                 (surface_height(old_surface) != surface_height(new_surface)))) {
  89         sdl2_window_resize(scon);
  90     }
  91
  92     SDL_RenderSetLogicalSize(scon->real_renderer,
  93                              surface_width(new_surface),
  94                              surface_height(new_surface));
  95
  96     switch (surface_format(scon->surface)) {
  97     case PIXMAN_x1r5g5b5:
  98         format = SDL_PIXELFORMAT_ARGB1555;
  99         break;
 100     case PIXMAN_r5g6b5:
 101         format = SDL_PIXELFORMAT_RGB565;
 102         break;
 103     case PIXMAN_a8r8g8b8:
 104     case PIXMAN_x8r8g8b8:
 105         format = SDL_PIXELFORMAT_ARGB8888;
 106         break;
 107     case PIXMAN_a8b8g8r8:
 108     case PIXMAN_x8b8g8r8:
 109         format = SDL_PIXELFORMAT_ABGR8888;
 110         break;
 111     case PIXMAN_r8g8b8a8:
 112     case PIXMAN_r8g8b8x8:
 113         format = SDL_PIXELFORMAT_RGBA8888;
 114         break;
 115     case PIXMAN_b8g8r8x8:
 116         format = SDL_PIXELFORMAT_BGRX8888;
 117         break;
 118     case PIXMAN_b8g8r8a8:
 119         format = SDL_PIXELFORMAT_BGRA8888;
 120         break;
 121     default:
 122         g_assert_not_reached();
 123     }
 124     scon->texture = SDL_CreateTexture(scon->real_renderer, format,
 125                                       SDL_TEXTUREACCESS_STREAMING,
 126                                       surface_width(new_surface),
 127                                       surface_height(new_surface));
 128     sdl2_2d_redraw(scon);
 129 }
 130
 131 void sdl2_2d_refresh(DisplayChangeListener *dcl)
 132 {
 133     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 134
 135     assert(!scon->opengl);
 136     graphic_hw_update(dcl->con);
 137     sdl2_poll_events(scon);
 138 }
 139
 140 void sdl2_2d_redraw(struct sdl2_console *scon)
 141 {
 142     assert(!scon->opengl);
 143
 144     if (!scon->surface) {
 145         return;
 146     }
 147     sdl2_2d_update(&scon->dcl, 0, 0,
 148                    surface_width(scon->surface),
 149                    surface_height(scon->surface));
 150 }
 151
 152 bool sdl2_2d_check_format(DisplayChangeListener *dcl,
 153                           pixman_format_code_t format)
 154 {
 155     /*
 156      * We let SDL convert for us a few more formats than,
 157      * the native ones. Thes are the ones I have tested.
 158      */
 159     return (format == PIXMAN_x8r8g8b8 ||
 160             format == PIXMAN_a8r8g8b8 ||
 161             format == PIXMAN_a8b8g8r8 ||
 162             format == PIXMAN_x8b8g8r8 ||
 163             format == PIXMAN_b8g8r8x8 ||
 164             format == PIXMAN_b8g8r8a8 ||
 165             format == PIXMAN_r8g8b8x8 ||
 166             format == PIXMAN_r8g8b8a8 ||
 167             format == PIXMAN_x1r5g5b5 ||
 168             format == PIXMAN_r5g6b5);
 169 }