Added SDL renderer for Windows. Still some issues, but mostly works.
This commit is contained in:
waltje
356
src/win/win_sdl.c
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356
src/win/win_sdl.c
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@@ -0,0 +1,356 @@
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/*
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* VARCem Virtual ARchaeological Computer EMulator.
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* An emulator of (mostly) x86-based PC systems and devices,
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* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
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* spanning the era between 1981 and 1995.
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*
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* This file is part of the VARCem Project.
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*
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* Rendering module for libSDL2
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*
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* NOTE: Given all the problems reported with FULLSCREEN use of SDL,
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* we will not use that, but, instead, use a new window which
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* coverrs the entire desktop.
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*
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* Version: @(#)win_sdl.c 1.0.2 2018/05/10
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*
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* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
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* Michael Dr<44>ing, <michael@drueing.de>
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*
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* Copyright 2018 Fred N. van Kempen.
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* Copyright 2018 Michael Dr<44>ing.
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*
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* Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that the
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* following conditions are met:
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*
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* 1. Redistributions of source code must retain the entire
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* above notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names
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* of its contributors may be used to endorse or promote
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* products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define UNICODE
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <SDL2/SDL.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "../emu.h"
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#include "../version.h"
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#include "../device.h"
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#include "../ui/ui.h"
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#include "../plat.h"
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#include "../devices/video/video.h"
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#include "win.h"
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#include "win_sdl.h"
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#if USE_SDL != 1
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# error This module can only be used dynamically.
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#endif
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#define PATH_SDL_DLL "sdl2.dll"
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static void *sdl_handle = NULL; /* handle to libSDL2 DLL */
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static SDL_Window *sdl_win = NULL;
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static SDL_Renderer *sdl_render = NULL;
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static SDL_Texture *sdl_tex = NULL;
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static HWND sdl_hwnd = NULL;
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static int sdl_w, sdl_h;
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/* Pointers to the real functions. */
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static void (*sdl_GetVersion)(SDL_version *ver);
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static char *const (*sdl_GetError)(void);
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static int (*sdl_Init)(Uint32 flags);
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static void (*sdl_Quit)(void);
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static SDL_Window *(*sdl_CreateWindowFrom)(const void *data);
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static void (*sdl_DestroyWindow)(SDL_Window *window);
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static SDL_Renderer *(*sdl_CreateRenderer)(SDL_Window *window,
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int index, Uint32 flags);
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static void (*sdl_DestroyRenderer)(SDL_Renderer *renderer);
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static SDL_Texture *(*sdl_CreateTexture)(SDL_Renderer *renderer,
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Uint32 format, int access,
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int w, int h);
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static void (*sdl_DestroyTexture)(SDL_Texture *texture);
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static int (*sdl_LockTexture)(SDL_Texture *texture,
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const SDL_Rect *rect,
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void **pixels, int *pitch);
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static void (*sdl_UnlockTexture)(SDL_Texture *texture);
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static int (*sdl_RenderCopy)(SDL_Renderer *renderer,
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SDL_Texture *texture,
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const SDL_Rect *srcrect,
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const SDL_Rect *dstrect);
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static void (*sdl_RenderPresent)(SDL_Renderer *renderer);
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static const dllimp_t sdl_imports[] = {
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{ "SDL_GetVersion", &sdl_GetVersion },
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{ "SDL_GetError", &sdl_GetError },
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{ "SDL_Init", &sdl_Init },
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{ "SDL_Quit", &sdl_Quit },
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{ "SDL_CreateWindowFrom", &sdl_CreateWindowFrom },
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{ "SDL_DestroyWindow", &sdl_DestroyWindow },
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{ "SDL_CreateRenderer", &sdl_CreateRenderer },
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{ "SDL_DestroyRenderer", &sdl_DestroyRenderer },
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{ "SDL_CreateTexture", &sdl_CreateTexture },
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{ "SDL_DestroyTexture", &sdl_DestroyTexture },
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{ "SDL_LockTexture", &sdl_LockTexture },
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{ "SDL_UnlockTexture", &sdl_UnlockTexture },
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{ "SDL_RenderCopy", &sdl_RenderCopy },
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{ "SDL_RenderPresent", &sdl_RenderPresent },
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{ NULL, NULL }
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};
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static void
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sdl_blit(int x, int y, int y1, int y2, int w, int h)
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{
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SDL_Rect r_src;
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void *pixeldata;
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int pitch;
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int yy;
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if (buffer32 == NULL) {
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video_blit_complete();
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return;
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}
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/*
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* TODO:
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* SDL_UpdateTexture() might be better here, as it is
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* (reportedly) slightly faster.
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*/
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sdl_LockTexture(sdl_tex, 0, &pixeldata, &pitch);
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for (yy = y1; yy < y2; yy++) {
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if ((y + yy) >= 0 && (y + yy) < buffer32->h)
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memcpy((uint32_t *) &(((uint8_t *)pixeldata)[yy * pitch]), &(((uint32_t *)buffer32->line[y + yy])[x]), w * 4);
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}
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video_blit_complete();
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sdl_UnlockTexture(sdl_tex);
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r_src.x = 0;
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r_src.y = 0;
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r_src.w = w;
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r_src.h = h;
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sdl_RenderCopy(sdl_render, sdl_tex, &r_src, 0);
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sdl_RenderPresent(sdl_render);
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}
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static void
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sdl_close(void)
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{
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/* Unregister our renderer! */
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video_setblit(NULL);
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if (sdl_tex != NULL) {
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sdl_DestroyTexture(sdl_tex);
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sdl_tex = NULL;
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}
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if (sdl_render != NULL) {
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sdl_DestroyRenderer(sdl_render);
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sdl_render = NULL;
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}
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if (sdl_win != NULL) {
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sdl_DestroyWindow(sdl_win);
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sdl_win = NULL;
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}
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if (sdl_hwnd != NULL) {
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plat_set_input(hwndMain);
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DestroyWindow(sdl_hwnd);
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sdl_hwnd = NULL;
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SetFocus(hwndMain);
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}
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/* Quit and unload the DLL if possible. */
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if (sdl_handle != NULL) {
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sdl_Quit();
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dynld_close(sdl_handle);
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sdl_handle = NULL;
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}
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}
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static int
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sdl_init(int fs)
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{
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wchar_t temp[128];
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SDL_version ver;
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pclog("SDL: init (fs=%d)\n", fs);
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cgapal_rebuild();
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/* Try loading the DLL. */
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sdl_handle = dynld_module(PATH_SDL_DLL, sdl_imports);
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if (sdl_handle == NULL) {
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pclog("SDL: unable to load '%s', SDL not available.\n", PATH_SDL_DLL);
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return(0);
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}
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/* Get and log the version of the DLL we are using. */
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sdl_GetVersion(&ver);
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pclog("SDL: version %d.%d.%d\n", ver.major, ver.minor, ver.patch);
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/* Initialize the SDL system. */
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if (sdl_Init(SDL_INIT_VIDEO) < 0) {
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pclog("SDL: initialization failed (%s)\n", sdl_GetError());
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return(0);
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}
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if (fs) {
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/* Get the size of the (current) desktop. */
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sdl_w = GetSystemMetrics(SM_CXSCREEN);
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sdl_h = GetSystemMetrics(SM_CYSCREEN);
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/* Create the desktop-covering window. */
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_swprintf(temp, L"%s v%s Full-Screen",
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TEXT(EMU_NAME), TEXT(EMU_VERSION));
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sdl_hwnd = CreateWindow(FS_CLASS_NAME,
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temp,
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WS_POPUP,
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0, 0, sdl_w, sdl_h,
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HWND_DESKTOP,
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NULL,
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hInstance,
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NULL);
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pclog("SDL: FS %dx%d window at %08lx\n", sdl_w, sdl_h, sdl_hwnd);
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/* Redirect RawInput to this new window. */
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plat_set_input(sdl_hwnd);
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/* Show the window, make it topmost, and give it focus. */
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SetWindowPos(sdl_hwnd, HWND_TOPMOST,
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0, 0, sdl_w, sdl_h, SWP_SHOWWINDOW);
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/* Now create the SDL window from that. */
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sdl_win = sdl_CreateWindowFrom((void *)sdl_hwnd);
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} else {
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/* Redirect RawInput to this new window. */
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plat_set_input(hwndMain);
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ShowWindow(hwndRender, TRUE);
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SetFocus(hwndMain);
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/* Create the SDL window from the render window. */
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sdl_win = sdl_CreateWindowFrom((void *)hwndRender);
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}
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if (sdl_win == NULL) {
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pclog("SDL: unable to CreateWindowFrom (%s)\n", sdl_GetError());
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sdl_close();
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return(0);
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}
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/*
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* TODO:
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* SDL_RENDERER_SOFTWARE, because SDL tries to do funky stuff
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* otherwise (it turns off Win7 Aero and it looks like it's
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* trying to switch to fullscreen even though the window is
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* not a fullscreen window?)
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*/
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sdl_render = sdl_CreateRenderer(sdl_win, -1, SDL_RENDERER_SOFTWARE);
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if (sdl_render == NULL) {
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pclog("SDL: unable to create renderer (%s)\n", sdl_GetError());
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sdl_close();
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return(0);
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}
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/*
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* TODO:
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* Actually the source is (apparently) XRGB8888, but the alpha
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* channel seems to be set to 255 everywhere, so ARGB8888 works
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* just as well.
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*/
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sdl_tex = sdl_CreateTexture(sdl_render, SDL_PIXELFORMAT_ARGB8888,
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SDL_TEXTUREACCESS_STREAMING, 2048, 2048);
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if (sdl_tex == NULL) {
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pclog("SDL: unable to create texture (%s)\n", sdl_GetError());
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sdl_close();
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return(0);
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}
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/* Make sure we get a clean exit. */
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atexit(sdl_close);
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/* Register our renderer! */
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video_setblit(sdl_blit);
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return(1);
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}
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static void
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sdl_resize(int x, int y)
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{
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pclog("SDL: resizing to %dx%d\n", x, y);
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}
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static void
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sdl_screenshot(const wchar_t *fn)
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{
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/* TODO: implement */
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}
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/* See if this module is available or not. */
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static int
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sdl_available(void)
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{
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void *handle;
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handle = dynld_module(PATH_SDL_DLL, NULL);
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if (handle != NULL) return(1);
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return(0);
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}
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const vidapi_t sdl_vidapi = {
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"SDL",
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1,
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sdl_init,
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sdl_close,
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NULL,
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sdl_resize,
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NULL,
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sdl_screenshot,
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sdl_available
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};
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56
src/win/win_sdl.h
Normal file
56
src/win/win_sdl.h
Normal file
@@ -0,0 +1,56 @@
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/*
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* VARCem Virtual ARchaeological Computer EMulator.
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* An emulator of (mostly) x86-based PC systems and devices,
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* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
|
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* spanning the era between 1981 and 1995.
|
||||
*
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||||
* This file is part of the VARCem Project.
|
||||
*
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* Definitions for the libSDL2 rendering module.
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*
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* Version: @(#)win_sdl.h 1.0.2 2018/05/10
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*
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* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
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* Michael Dr<44>ing, <michael@drueing.de>
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*
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* Copyright 2018 Fred N. van Kempen.
|
||||
* Copyright 2018 Michael Dr<44>ing.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with
|
||||
* or without modification, are permitted provided that the
|
||||
* following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the entire
|
||||
* above notice, this list of conditions and the following
|
||||
* disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the
|
||||
* following disclaimer in the documentation and/or other
|
||||
* materials provided with the distribution.
|
||||
*
|
||||
* 3. Neither the name of the copyright holder nor the names
|
||||
* of its contributors may be used to endorse or promote
|
||||
* products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
||||
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
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*/
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#ifndef WIN_SDL_H
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# define WIN_SDL_H
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extern const vidapi_t sdl_vidapi;
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#endif /*WIN_SDL_H*/
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Reference in New Issue
Block a user