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 "qemu-common.h"
  28#include "ui/console.h"
  29#include "ui/input.h"
  30#include "ui/sdl2.h"
  31#include "sysemu/sysemu.h"
  32
  33void 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    size_t surface_data_offset;
  40    assert(!scon->opengl);
  41
  42    if (!surf) {
  43        return;
  44    }
  45    if (!scon->texture) {
  46        return;
  47    }
  48
  49    surface_data_offset = surface_bytes_per_pixel(surf) * x +
  50                          surface_stride(surf) * y;
  51    rect.x = x;
  52    rect.y = y;
  53    rect.w = w;
  54    rect.h = h;
  55
  56    SDL_UpdateTexture(scon->texture, &rect,
  57                      surface_data(surf) + surface_data_offset,
  58                      surface_stride(surf));
  59    SDL_RenderClear(scon->real_renderer);
  60    SDL_RenderCopy(scon->real_renderer, scon->texture, NULL, NULL);
  61    SDL_RenderPresent(scon->real_renderer);
  62}
  63
  64void sdl2_2d_switch(DisplayChangeListener *dcl,
  65                    DisplaySurface *new_surface)
  66{
  67    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
  68    DisplaySurface *old_surface = scon->surface;
  69    int format = 0;
  70
  71    assert(!scon->opengl);
  72
  73    scon->surface = new_surface;
  74
  75    if (scon->texture) {
  76        SDL_DestroyTexture(scon->texture);
  77        scon->texture = NULL;
  78    }
  79
  80    if (!new_surface) {
  81        sdl2_window_destroy(scon);
  82        return;
  83    }
  84
  85    if (!scon->real_window) {
  86        sdl2_window_create(scon);
  87    } else if (old_surface &&
  88               ((surface_width(old_surface)  != surface_width(new_surface)) ||
  89                (surface_height(old_surface) != surface_height(new_surface)))) {
  90        sdl2_window_resize(scon);
  91    }
  92
  93    SDL_RenderSetLogicalSize(scon->real_renderer,
  94                             surface_width(new_surface),
  95                             surface_height(new_surface));
  96
  97    switch (surface_format(scon->surface)) {
  98    case PIXMAN_x1r5g5b5:
  99        format = SDL_PIXELFORMAT_ARGB1555;
 100        break;
 101    case PIXMAN_r5g6b5:
 102        format = SDL_PIXELFORMAT_RGB565;
 103        break;
 104    case PIXMAN_a8r8g8b8:
 105    case PIXMAN_x8r8g8b8:
 106        format = SDL_PIXELFORMAT_ARGB8888;
 107        break;
 108    case PIXMAN_a8b8g8r8:
 109    case PIXMAN_x8b8g8r8:
 110        format = SDL_PIXELFORMAT_ABGR8888;
 111        break;
 112    case PIXMAN_r8g8b8a8:
 113    case PIXMAN_r8g8b8x8:
 114        format = SDL_PIXELFORMAT_RGBA8888;
 115        break;
 116    case PIXMAN_b8g8r8x8:
 117        format = SDL_PIXELFORMAT_BGRX8888;
 118        break;
 119    case PIXMAN_b8g8r8a8:
 120        format = SDL_PIXELFORMAT_BGRA8888;
 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
 132void 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
 141void 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
 153bool 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_a8r8g8b8 ||
 162            format == PIXMAN_a8b8g8r8 ||
 163            format == PIXMAN_x8b8g8r8 ||
 164            format == PIXMAN_b8g8r8x8 ||
 165            format == PIXMAN_b8g8r8a8 ||
 166            format == PIXMAN_r8g8b8x8 ||
 167            format == PIXMAN_r8g8b8a8 ||
 168            format == PIXMAN_x1r5g5b5 ||
 169            format == PIXMAN_r5g6b5);
 170}
 171