cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

sdl2-2d.c (5324B)

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