281 lines
8.5 KiB
C++
281 lines
8.5 KiB
C++
/*
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* Copyright (c) 2002 Light Weight Java Game Library Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'Light Weight Java Game Library' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific 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 LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* $Id$
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*
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* Base linux functionality for GL.
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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* @version $Revision$
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*/
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#include "extgl.h"
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#include "Window.h"
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#include "org_lwjgl_opengl_GLWindow.h"
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#define USEGLX13 true
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static GLXContext context = NULL; // OpenGL rendering context
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static GLXWindow glx_window;
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void makeCurrent(void) {
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if (USEGLX13 && extgl_Extensions.glx.GLX13)
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glXMakeContextCurrent(getCurrentDisplay(), glx_window, glx_window, context);
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else
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glXMakeCurrent(getCurrentDisplay(), getCurrentWindow(), context);
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}
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static void releaseContext(void) {
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if (USEGLX13 && extgl_Extensions.glx.GLX13)
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glXMakeContextCurrent(getCurrentDisplay(), None, None, NULL);
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else
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glXMakeCurrent(getCurrentDisplay(), None, NULL);
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}
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int convertToBPE(int bpp) {
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int bpe = 4;
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switch (bpp) {
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case 32:
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case 24:
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bpe = 8;
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break;
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case 16: /* Fall through */
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default:
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break;
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}
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return bpe;
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}
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GLXContext getCurrentContext(void) {
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return context;
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}
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static GLXFBConfig *chooseVisualGLX13(Display *disp, int screen, int bpp, int depth, int alpha, int stencil) {
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int bpe = convertToBPE(bpp);
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int attriblist[] = {GLX_RENDER_TYPE, GLX_RGBA_BIT,
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GLX_DOUBLEBUFFER, True,
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GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
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GLX_DEPTH_SIZE, depth,
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GLX_RED_SIZE, bpe,
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GLX_GREEN_SIZE, bpe,
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GLX_BLUE_SIZE, bpe,
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GLX_ALPHA_SIZE, alpha,
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GLX_STENCIL_SIZE, stencil,
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None};
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int num_formats = 0;
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GLXFBConfig* configs = glXChooseFBConfig(disp, screen, attriblist, &num_formats);
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if (num_formats > 0)
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return configs;
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else {
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if (configs != NULL)
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XFree(configs);
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return NULL;
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}
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}
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static XVisualInfo *chooseVisual(Display *disp, int screen, int bpp, int depth, int alpha, int stencil) {
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int bpe = convertToBPE(bpp);
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int attriblist[] = {GLX_RGBA,
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GLX_DOUBLEBUFFER,
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GLX_DEPTH_SIZE, depth,
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GLX_RED_SIZE, bpe,
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GLX_GREEN_SIZE, bpe,
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GLX_BLUE_SIZE, bpe,
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GLX_ALPHA_SIZE, alpha,
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GLX_STENCIL_SIZE, stencil,
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None};
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return glXChooseVisual(disp, screen, attriblist);
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}
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static void dumpVisualInfo(Display *disp, XVisualInfo *vis_info) {
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int alpha, depth, stencil, r, g, b;
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glXGetConfig(disp, vis_info, GLX_RED_SIZE, &r);
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glXGetConfig(disp, vis_info, GLX_GREEN_SIZE, &g);
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glXGetConfig(disp, vis_info, GLX_BLUE_SIZE, &b);
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glXGetConfig(disp, vis_info, GLX_ALPHA_SIZE, &alpha);
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glXGetConfig(disp, vis_info, GLX_DEPTH_SIZE, &depth);
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glXGetConfig(disp, vis_info, GLX_STENCIL_SIZE, &stencil);
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printf("Pixel format chosen sizes: r = %d, g = %d, b = %d, a = %d, depth = %d, stencil = %d\n", r, g, b, alpha, depth, stencil);
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}
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static void destroy(void) {
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releaseContext();
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if (USEGLX13 && extgl_Extensions.glx.GLX13)
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glXDestroyWindow(getCurrentDisplay(), glx_window);
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glXDestroyContext(getCurrentDisplay(), context);
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context = NULL;
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Display *disp = getCurrentDisplay();
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destroyWindow();
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XCloseDisplay(disp);
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extgl_Close();
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}
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static bool initWindowGLX13(JNIEnv *env, Display *disp, int screen, jstring title, int x, int y, int width, int height, int bpp, int depth, int alpha, int stencil, bool fscreen) {
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GLXFBConfig *configs = chooseVisualGLX13(disp, screen, bpp, depth, alpha, stencil);
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if (configs == NULL) {
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throwException(env, "Could not find a matching pixel format");
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return false;
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}
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context = glXCreateNewContext(disp, configs[0], GLX_RGBA_TYPE, NULL, True);
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if (context == NULL) {
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XFree(configs);
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throwException(env, "Could not create a GLX context");
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return false;
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}
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if (glXIsDirect(disp, context) == False) {
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glXDestroyContext(disp, context);
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XFree(configs);
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throwException(env, "Could not create a GLX context");
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return false;
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}
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XVisualInfo * vis_info = glXGetVisualFromFBConfig(disp, configs[0]);
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if (vis_info == NULL) {
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glXDestroyContext(disp, context);
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XFree(configs);
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throwException(env, "Could not create visual info from FB config");
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return false;
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}
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#ifdef _DEBUG
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dumpVisualInfo(disp, vis_info);
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#endif
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createWindow(env, disp, screen, vis_info, title, x, y, width, height, fscreen);
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glx_window = glXCreateWindow(disp, configs[0], getCurrentWindow(), NULL);
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makeCurrent();
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XFree(configs);
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XFree(vis_info);
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return true;
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}
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static bool initWindowGLX(JNIEnv *env, Display *disp, int screen, jstring title, int x, int y, int width, int height, int bpp, int depth, int alpha, int stencil, bool fscreen) {
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XVisualInfo *vis_info = chooseVisual(disp, screen, bpp, depth, alpha, stencil);
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if (vis_info == NULL) {
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throwException(env, "Could not find a matching pixel format");
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return false;
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}
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#ifdef _DEBUG
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dumpVisualInfo(disp, vis_info);
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#endif
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context = glXCreateContext(disp, vis_info, NULL, True);
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if (context == NULL) {
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XFree(vis_info);
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throwException(env, "Could not create a GLX context");
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return false;
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}
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if (glXIsDirect(disp, context) == False) {
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glXDestroyContext(disp, context);
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XFree(vis_info);
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throwException(env, "Could not create a direct GLX context");
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return false;
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}
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createWindow(env, disp, screen, vis_info, title, x, y, width, height, fscreen);
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makeCurrent();
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XFree(vis_info);
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return true;
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}
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/*
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* Class: org_lwjgl_opengl_GLWindow
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* Method: nCreate
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* Signature: (IIII)Z
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GLWindow_nCreate
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(JNIEnv * env, jobject obj, jstring title, jint x, jint y, jint width, jint height, jint bpp, jint alpha, jint depth, jint stencil, jboolean fullscreen)
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{
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int screen;
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Display *disp;
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bool fscreen = false;
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if (fullscreen == JNI_TRUE)
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fscreen = true;
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if (extgl_Open() != 0) {
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throwException(env, "Could not load gl libs");
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return;
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}
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disp = XOpenDisplay(NULL);
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if (disp == NULL) {
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throwException(env, "Could not open X display");
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return;
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}
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screen = XDefaultScreen(disp);
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if (extgl_InitGLX(disp, screen) != 0) {
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XCloseDisplay(disp);
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extgl_Close();
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throwException(env, "Could not init GLX");
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return;
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}
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bool create_success;
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if (USEGLX13 && extgl_Extensions.glx.GLX13) {
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create_success = initWindowGLX13(env, disp, screen, title, x, y, width, height, bpp, depth, alpha, stencil, fscreen);
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} else {
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create_success = initWindowGLX(env, disp, screen, title, x, y, width, height, bpp, depth, alpha, stencil, fscreen);
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}
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if (!create_success) {
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XCloseDisplay(disp);
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extgl_Close();
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return;
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}
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if (extgl_Initialize() != 0) {
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destroy();
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throwException(env, "Could not init gl function pointers");
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return;
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}
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#ifdef _DEBUG
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const GLubyte * extensions = glGetString(GL_EXTENSIONS);
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printf("Supported extensions: %s\n", extensions);
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#endif
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}
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/*
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* Class: org_lwjgl_opengl_GLWindow
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* Method: nDestroy
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GLWindow_nDestroyGL
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(JNIEnv * env, jobject obj)
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{
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destroy();
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}
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/*
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* Class: org_lwjgl_opengl_GLWindow
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* Method: swapBuffers
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GLWindow_swapBuffers(JNIEnv * env, jobject obj)
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{
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if (USEGLX13 && extgl_Extensions.glx.GLX13)
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glXSwapBuffers(getCurrentDisplay(), glx_window);
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else
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glXSwapBuffers(getCurrentDisplay(), getCurrentWindow());
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}
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