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 /* 49 * SDL2 seems to do some double-buffering, and trying to only 50 * update the changed areas results in only one of the two buffers 51 * being updated. Which flickers alot. So lets not try to be 52 * clever do a full update every time ... 53 */ 54 #if 0 55 rect.x = x; 56 rect.y = y; 57 rect.w = w; 58 rect.h = h; 59 #else 60 rect.x = 0; 61 rect.y = 0; 62 rect.w = surface_width(surf); 63 rect.h = surface_height(surf); 64 #endif 65 66 SDL_UpdateTexture(scon->texture, NULL, surface_data(surf), 67 surface_stride(surf)); 68 SDL_RenderCopy(scon->real_renderer, scon->texture, &rect, &rect); 69 SDL_RenderPresent(scon->real_renderer); 70 } 71 72 void sdl2_2d_switch(DisplayChangeListener *dcl, 73 DisplaySurface *new_surface) 74 { 75 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 76 DisplaySurface *old_surface = scon->surface; 77 int format = 0; 78 79 assert(!scon->opengl); 80 81 scon->surface = new_surface; 82 83 if (scon->texture) { 84 SDL_DestroyTexture(scon->texture); 85 scon->texture = NULL; 86 } 87 88 if (!new_surface) { 89 sdl2_window_destroy(scon); 90 return; 91 } 92 93 if (!scon->real_window) { 94 sdl2_window_create(scon); 95 } else if (old_surface && 96 ((surface_width(old_surface) != surface_width(new_surface)) || 97 (surface_height(old_surface) != surface_height(new_surface)))) { 98 sdl2_window_resize(scon); 99 } 100 101 SDL_RenderSetLogicalSize(scon->real_renderer, 102 surface_width(new_surface), 103 surface_height(new_surface)); 104 105 switch (surface_format(scon->surface)) { 106 case PIXMAN_x1r5g5b5: 107 format = SDL_PIXELFORMAT_ARGB1555; 108 break; 109 case PIXMAN_r5g6b5: 110 format = SDL_PIXELFORMAT_RGB565; 111 break; 112 case PIXMAN_x8r8g8b8: 113 format = SDL_PIXELFORMAT_ARGB8888; 114 break; 115 case PIXMAN_r8g8b8x8: 116 format = SDL_PIXELFORMAT_RGBA8888; 117 break; 118 default: 119 g_assert_not_reached(); 120 } 121 scon->texture = SDL_CreateTexture(scon->real_renderer, format, 122 SDL_TEXTUREACCESS_STREAMING, 123 surface_width(new_surface), 124 surface_height(new_surface)); 125 sdl2_2d_redraw(scon); 126 } 127 128 void sdl2_2d_refresh(DisplayChangeListener *dcl) 129 { 130 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 131 132 assert(!scon->opengl); 133 graphic_hw_update(dcl->con); 134 sdl2_poll_events(scon); 135 } 136 137 void sdl2_2d_redraw(struct sdl2_console *scon) 138 { 139 assert(!scon->opengl); 140 141 if (!scon->surface) { 142 return; 143 } 144 sdl2_2d_update(&scon->dcl, 0, 0, 145 surface_width(scon->surface), 146 surface_height(scon->surface)); 147 } 148 149 bool sdl2_2d_check_format(DisplayChangeListener *dcl, 150 pixman_format_code_t format) 151 { 152 /* 153 * We let SDL convert for us a few more formats than, 154 * the native ones. Thes are the ones I have tested. 155 */ 156 return (format == PIXMAN_x8r8g8b8 || 157 format == PIXMAN_b8g8r8x8 || 158 format == PIXMAN_x1r5g5b5 || 159 format == PIXMAN_r5g6b5); 160 } 161