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 } 165