mirror of
https://github.com/libretro/libretro-tyrquake.git
synced 2025-02-12 03:31:37 +00:00
277 lines
6.5 KiB
C
277 lines
6.5 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef APPLE_OPENGL
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#include <OpenGL/gl.h>
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#else
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#include <GL/gl.h>
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#endif
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#include "SDL.h"
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#include "console.h"
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#include "glquake.h"
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#include "input.h"
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#include "quakedef.h"
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#include "sdl_common.h"
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#include "sys.h"
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#include "vid.h"
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#ifdef NQ_HACK
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#include "host.h"
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#endif
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#define WARP_WIDTH 320
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#define WARP_HEIGHT 200
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unsigned short d_8to16table[256];
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unsigned d_8to24table[256];
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unsigned char d_15to8table[65536];
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viddef_t vid;
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qboolean VID_IsFullScreen(void) { return false; }
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void VID_LockBuffer(void) {}
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void VID_UnlockBuffer(void) {}
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void (*VID_SetGammaRamp)(unsigned short ramp[3][256]) = NULL;
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float gldepthmin, gldepthmax;
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qboolean gl_mtexable;
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cvar_t gl_ztrick = { "gl_ztrick", "1" };
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void VID_Update(vrect_t *rects) {}
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void D_BeginDirectRect(int x, int y, const byte *pbitmap, int width, int height) {}
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void D_EndDirectRect(int x, int y, int width, int height) {}
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/*
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* FIXME!!
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*
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* Move stuff around or create abstractions so these hacks aren't needed
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*/
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#ifndef _WIN32
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void Sys_SendKeyEvents(void)
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{
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IN_ProcessEvents();
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}
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#endif
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#ifdef _WIN32
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#include <windows.h>
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qboolean DDActive;
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qboolean scr_skipupdate;
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HWND mainwindow;
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void VID_ForceLockState(int lk) {}
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int VID_ForceUnlockedAndReturnState(void) { return 0; }
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void VID_SetDefaultMode(void) {}
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qboolean window_visible(void) { return true; }
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#endif
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int texture_mode = GL_LINEAR;
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static SDL_GLContext gl_context;
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const char *gl_vendor;
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const char *gl_renderer;
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const char *gl_version;
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const char *gl_extensions;
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static int gl_num_texture_units;
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static qboolean
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VID_GL_CheckExtn(const char *extn)
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{
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const char *found;
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const int len = strlen(extn);
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char nextc;
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found = strstr(gl_extensions, extn);
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while (found) {
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nextc = found[len];
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if (nextc == ' ' || !nextc)
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return true;
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found = strstr(found + len, extn);
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}
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return false;
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}
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static void
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VID_InitGL(void)
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{
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gl_vendor = (const char *)glGetString(GL_VENDOR);
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gl_renderer = (const char *)glGetString(GL_RENDERER);
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gl_version = (const char *)glGetString(GL_VERSION);
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gl_extensions = (const char *)glGetString(GL_EXTENSIONS);
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printf("GL_VENDOR: %s\n", gl_vendor);
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printf("GL_RENDERER: %s\n", gl_renderer);
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printf("GL_VERSION: %s\n", gl_version);
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printf("GL_EXTENSIONS: %s\n", gl_extensions);
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gl_mtexable = false;
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if (!COM_CheckParm("-nomtex") && VID_GL_CheckExtn("GL_ARB_multitexture")) {
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qglMultiTexCoord2fARB = SDL_GL_GetProcAddress("glMultiTexCoord2fARB");
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qglActiveTextureARB = SDL_GL_GetProcAddress("glActiveTextureARB");
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glGetIntegerv(GL_MAX_TEXTURE_UNITS, &gl_num_texture_units);
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if (gl_num_texture_units >= 2 &&
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qglMultiTexCoord2fARB && qglActiveTextureARB)
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gl_mtexable = true;
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Con_Printf("ARB multitexture extension enabled\n"
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"-> %i texture units available\n",
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gl_num_texture_units);
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}
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glClearColor(0.5, 0.5, 0.5, 0);
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glCullFace(GL_FRONT);
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glEnable(GL_TEXTURE_2D);
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glEnable(GL_ALPHA_TEST);
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glAlphaFunc(GL_GREATER, 0.666);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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glShadeModel(GL_FLAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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}
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static int
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VID_SetMode(int modenum, unsigned char *palette)
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{
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Uint32 flags;
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int w = 640;
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int h = 480;
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int err;
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if (gl_context)
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SDL_GL_DeleteContext(gl_context);
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if (sdl_window)
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SDL_DestroyWindow(sdl_window);
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flags = SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL;
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sdl_window = SDL_CreateWindow("TyrQuake",
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SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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w, h, flags);
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if (!sdl_window)
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Sys_Error("%s: Unable to create window: %s", __func__, SDL_GetError());
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gl_context = SDL_GL_CreateContext(sdl_window);
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if (!gl_context)
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Sys_Error("%s: Unable to create OpenGL context: %s",
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__func__, SDL_GetError());
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err = SDL_GL_MakeCurrent(sdl_window, gl_context);
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if (err)
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Sys_Error("%s: SDL_GL_MakeCurrent() failed: %s",
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__func__, SDL_GetError());
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VID_InitGL();
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vid.numpages = 1;
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vid.width = vid.conwidth = w;
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vid.height = vid.conheight = h;
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vid.maxwarpwidth = WARP_WIDTH;
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vid.maxwarpheight = WARP_HEIGHT;
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vid.aspect = ((float)vid.height / (float)vid.width) * (320.0 / 240.0);
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vid.colormap = host_colormap;
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vid.fullbright = 256 - LittleLong(*((int *)vid.colormap + 2048));
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return true;
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}
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void
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VID_Init(unsigned char *palette)
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{
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int err;
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Q_SDL_InitOnce();
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err = SDL_InitSubSystem(SDL_INIT_VIDEO);
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if (err < 0)
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Sys_Error("VID: Couldn't load SDL: %s", SDL_GetError());
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VID_SetMode(0, palette);
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VID_SetPalette(palette);
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}
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void
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VID_Shutdown(void)
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{
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if (sdl_window)
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SDL_DestroyWindow(sdl_window);
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}
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void
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GL_BeginRendering(int *x, int *y, int *width, int *height)
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{
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*x = *y = 0;
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*width = vid.width;
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*height = vid.height;
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}
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void
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GL_EndRendering(void)
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{
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glFlush();
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SDL_GL_SwapWindow(sdl_window);
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}
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void
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VID_SetPalette(unsigned char *palette)
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{
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unsigned i, r, g, b, pixel;
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switch (gl_solid_format) {
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case GL_RGB:
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case GL_RGBA:
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for (i = 0; i < 256; i++) {
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r = palette[0];
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g = palette[1];
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b = palette[2];
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palette += 3;
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pixel = (0xff << 24) | (r << 0) | (g << 8) | (b << 16);
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d_8to24table[i] = LittleLong(pixel);
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}
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d_8to24table[255] &= LittleLong(0xffffff); // 255 is transparent
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break;
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default:
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Sys_Error("%s: unsupported texture format (%d)", __func__,
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gl_solid_format);
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}
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}
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void
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VID_ShiftPalette(unsigned char *palette)
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{
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/* Done via gl_polyblend instead */
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//VID_SetPalette(palette);
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}
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