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
  31void sdl2_2d_update(DisplayChangeListener *dcl,
  32                    int x, int y, int w, int h)
  33{
  34    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
  35    DisplaySurface *surf = qemu_console_surface(dcl->con);
  36    SDL_Rect rect;
  37    size_t surface_data_offset;
  38    assert(!scon->opengl);
  39
  40    if (!surf) {
  41        return;
  42    }
  43    if (!scon->texture) {
  44        return;
  45    }
  46
  47    surface_data_offset = surface_bytes_per_pixel(surf) * x +
  48                          surface_stride(surf) * y;
  49    rect.x = x;
  50    rect.y = y;
  51    rect.w = w;
  52    rect.h = h;
  53
  54    SDL_UpdateTexture(scon->texture, &rect,
  55                      surface_data(surf) + surface_data_offset,
  56                      surface_stride(surf));
  57    SDL_RenderClear(scon->real_renderer);
  58    SDL_RenderCopy(scon->real_renderer, scon->texture, NULL, NULL);
  59    SDL_RenderPresent(scon->real_renderer);
  60}
  61
  62void sdl2_2d_switch(DisplayChangeListener *dcl,
  63                    DisplaySurface *new_surface)
  64{
  65    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
  66    DisplaySurface *old_surface = scon->surface;
  67    int format = 0;
  68
  69    assert(!scon->opengl);
  70
  71    scon->surface = new_surface;
  72
  73    if (scon->texture) {
  74        SDL_DestroyTexture(scon->texture);
  75        scon->texture = NULL;
  76    }
  77
  78    if (!new_surface) {
  79        sdl2_window_destroy(scon);
  80        return;
  81    }
  82
  83    if (!scon->real_window) {
  84        sdl2_window_create(scon);
  85    } else if (old_surface &&
  86               ((surface_width(old_surface)  != surface_width(new_surface)) ||
  87                (surface_height(old_surface) != surface_height(new_surface)))) {
  88        sdl2_window_resize(scon);
  89    }
  90
  91    SDL_RenderSetLogicalSize(scon->real_renderer,
  92                             surface_width(new_surface),
  93                             surface_height(new_surface));
  94
  95    switch (surface_format(scon->surface)) {
  96    case PIXMAN_x1r5g5b5:
  97        format = SDL_PIXELFORMAT_ARGB1555;
  98        break;
  99    case PIXMAN_r5g6b5:
 100        format = SDL_PIXELFORMAT_RGB565;
 101        break;
 102    case PIXMAN_a8r8g8b8:
 103    case PIXMAN_x8r8g8b8:
 104        format = SDL_PIXELFORMAT_ARGB8888;
 105        break;
 106    case PIXMAN_a8b8g8r8:
 107    case PIXMAN_x8b8g8r8:
 108        format = SDL_PIXELFORMAT_ABGR8888;
 109        break;
 110    case PIXMAN_r8g8b8a8:
 111    case PIXMAN_r8g8b8x8:
 112        format = SDL_PIXELFORMAT_RGBA8888;
 113        break;
 114    case PIXMAN_b8g8r8x8:
 115        format = SDL_PIXELFORMAT_BGRX8888;
 116        break;
 117    case PIXMAN_b8g8r8a8:
 118        format = SDL_PIXELFORMAT_BGRA8888;
 119        break;
 120    default:
 121        g_assert_not_reached();
 122    }
 123    scon->texture = SDL_CreateTexture(scon->real_renderer, format,
 124                                      SDL_TEXTUREACCESS_STREAMING,
 125                                      surface_width(new_surface),
 126                                      surface_height(new_surface));
 127    sdl2_2d_redraw(scon);
 128}
 129
 130void sdl2_2d_refresh(DisplayChangeListener *dcl)
 131{
 132    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 133
 134    assert(!scon->opengl);
 135    graphic_hw_update(dcl->con);
 136    sdl2_poll_events(scon);
 137}
 138
 139void sdl2_2d_redraw(struct sdl2_console *scon)
 140{
 141    assert(!scon->opengl);
 142
 143    if (!scon->surface) {
 144        return;
 145    }
 146    sdl2_2d_update(&scon->dcl, 0, 0,
 147                   surface_width(scon->surface),
 148                   surface_height(scon->surface));
 149}
 150
 151bool sdl2_2d_check_format(DisplayChangeListener *dcl,
 152                          pixman_format_code_t format)
 153{
 154    /*
 155     * We let SDL convert for us a few more formats than,
 156     * the native ones. Thes are the ones I have tested.
 157     */
 158    return (format == PIXMAN_x8r8g8b8 ||
 159            format == PIXMAN_a8r8g8b8 ||
 160            format == PIXMAN_a8b8g8r8 ||
 161            format == PIXMAN_x8b8g8r8 ||
 162            format == PIXMAN_b8g8r8x8 ||
 163            format == PIXMAN_b8g8r8a8 ||
 164            format == PIXMAN_r8g8b8x8 ||
 165            format == PIXMAN_r8g8b8a8 ||
 166            format == PIXMAN_x1r5g5b5 ||
 167            format == PIXMAN_r5g6b5);
 168}
 169