X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2F3dengfx%2Fsrc%2Ffxwt%2Finit_sdl.cpp;fp=src%2F3dengfx%2Fsrc%2Ffxwt%2Finit_sdl.cpp;h=5f53d86d02bacd48b83fe055d00d14f48e5ab50a;hb=6e23259dbabaeb1711a2a5ca25b9cb421f693759;hp=0000000000000000000000000000000000000000;hpb=fe068fa879814784c45e0cb2e65dac489e8f5594;p=summerhack

diff --git a/src/3dengfx/src/fxwt/init_sdl.cpp b/src/3dengfx/src/fxwt/init_sdl.cpp
new file mode 100644
index 0000000..5f53d86
--- /dev/null
+++ b/src/3dengfx/src/fxwt/init_sdl.cpp
@@ -0,0 +1,132 @@
+/*
+This file is part of the 3dengfx, realtime visualization system.
+
+Copyright (C) 2004, 2005 John Tsiombikas <nuclear@siggraph.org>
+
+3dengfx is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+3dengfx is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with 3dengfx; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/* OpenGL through SDL
+ *
+ * Author: John Tsiombikas 2004
+ */
+
+#include "3dengfx_config.h"
+
+#if GFX_LIBRARY == SDL
+
+#include <stdlib.h>
+#include "init.hpp"
+#include "gfx_library.h"
+#include "3dengfx/3denginefx.hpp"
+#include "common/err_msg.h"
+
+bool fxwt::init_graphics(GraphicsInitParameters *gparams) {
+	info("Initializing SDL");
+
+	if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_NOPARACHUTE) == -1) {
+		error("%s: Could not initialize SDL library.", __func__);
+		return false;
+	}
+
+	if(!gparams->fullscreen) {
+		const SDL_VideoInfo *vid_inf = SDL_GetVideoInfo();
+		gparams->bpp = vid_inf->vfmt->BitsPerPixel;
+	}
+
+	info("Trying to set video mode %dx%dx%d, d:%d s:%d %s", gparams->x, gparams->y, gparams->bpp, gparams->depth_bits, gparams->stencil_bits, gparams->fullscreen ? "fullscreen" : "windowed");
+	
+	int rbits, gbits, bbits;
+	switch(gparams->bpp) {
+	case 32:
+		rbits = gbits = bbits = 8;
+		break;
+		
+	case 16:
+		rbits = bbits = 5;
+		gbits = 6;
+		break;
+		
+	default:
+		error("%s: Tried to set unsupported pixel format: %d bpp", __func__, gparams->bpp);
+		return false;
+	}
+
+	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, rbits);
+	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, gbits);
+	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, bbits);
+	SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, gparams->depth_bits);
+	SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, gparams->stencil_bits);
+	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+
+	unsigned long flags = SDL_OPENGL;
+	if(gparams->fullscreen) flags |= SDL_FULLSCREEN;
+	if(!SDL_SetVideoMode(gparams->x, gparams->y, gparams->bpp, flags)) {
+		if(gparams->depth_bits == 32) gparams->depth_bits = 24;
+		SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, gparams->depth_bits);
+		
+		if(!SDL_SetVideoMode(gparams->x, gparams->y, gparams->bpp, flags)) {
+			error("%s: Could not set requested video mode", __func__);
+		}
+	}
+
+	// now check the actual video mode we got
+	int arbits, agbits, abbits, azbits, astencilbits;
+	SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &arbits);
+	SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &agbits);
+	SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &abbits);
+	SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &azbits);
+	SDL_GL_GetAttribute(SDL_GL_STENCIL_SIZE, &astencilbits);
+
+	info("Initialized video mode:");
+	info("    bpp: %d (%d%d%d)", arbits + agbits + abbits, arbits, agbits, abbits);
+	info("zbuffer: %d", azbits);
+	info("stencil: %d", astencilbits);
+
+	/* if the dont_care_flags does not contain DONT_CARE_BPP and our color bits
+	 * does not match, we should return failure, however we test against
+	 * the difference allowing a +/-1 difference in order to allow for 16bpp
+	 * formats of either 565 or 555 and consider them equal.
+	 */
+	if(!(gparams->dont_care_flags & DONT_CARE_BPP) && abs(arbits - rbits) > 1 && abs(agbits - gbits) > 1 && abs(abbits - bbits) > 1) {
+		error("%s: Could not set requested exact bpp mode", __func__);
+		return false;
+	}
+	
+	// now if we don't have DONT_CARE_DEPTH in the dont_care_flags check for 
+	// exact depth buffer format, however consider 24 and 32 bit the same
+	if(!(gparams->dont_care_flags & DONT_CARE_DEPTH) && azbits != gparams->depth_bits) {
+		if(!(gparams->depth_bits == 32 && azbits == 24 || gparams->depth_bits == 24 && azbits == 32)) {
+			error("%s: Could not set requested exact zbuffer depth", __func__);
+			return false;
+		}
+	}
+
+	// if we don't have DONT_CARE_STENCIL make sure we have the stencil format
+	// that was asked.
+	if(!(gparams->dont_care_flags & DONT_CARE_STENCIL) && astencilbits != gparams->stencil_bits) {
+		error("%s: Could not set exact stencil format", __func__);
+		return false;
+	}
+
+	return true;
+}
+
+
+void fxwt::destroy_graphics() {
+	info("Shutting down SDL...");
+	SDL_Quit();
+}
+#endif	// SDL