LXR qemu/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
  32void 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
  63void 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
 131void 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
 140void 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
 152bool 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}
 170