179 lines
6.0 KiB
C++
179 lines
6.0 KiB
C++
/*
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* Copyright (c) 2002-2004 LWJGL 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 'LWJGL' 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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* Linux Pbuffer.
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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 <stdlib.h>
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#include "org_lwjgl_opengl_Pbuffer.h"
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#include "extgl.h"
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#include "Window.h"
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#include "common_tools.h"
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typedef struct _PbufferInfo {
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GLXPbuffer buffer;
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GLXContext context;
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} PbufferInfo;
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JNIEXPORT jboolean JNICALL Java_org_lwjgl_opengl_Pbuffer_nIsBufferLost
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(JNIEnv *env, jclass clazz, jint handle)
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{
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// The buffer is never lost, because of the GLX_PRESERVED_CONTENTS flag
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return JNI_FALSE;
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}
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JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_Pbuffer_getPbufferCaps
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(JNIEnv *env, jclass clazz)
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{
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// Only support thw GLX 1.3 Pbuffers and ignore the GLX_SGIX_pbuffer extension
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return extgl_Extensions.GLX13 ? org_lwjgl_opengl_Pbuffer_PBUFFER_SUPPORTED : 0;
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}
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static void destroyPbuffer(PbufferInfo *buffer_info) {
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GLXPbuffer buffer = buffer_info->buffer;
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GLXContext context = buffer_info->context;
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glXDestroyPbuffer(getDisplay(), buffer);
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glXDestroyContext(getDisplay(), context);
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free(buffer_info);
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decDisplay();
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}
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JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_Pbuffer_nCreate(JNIEnv *env, jclass clazz, jint width, jint height, jobject pixel_format,
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jobject pixelFormatCaps, jobject pBufferAttribs)
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{
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Display *disp = incDisplay(env);
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if (disp == NULL) {
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return -1;
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}
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int current_screen = XDefaultScreen(disp);
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if (!extgl_InitGLX(env, disp, current_screen)) {
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decDisplay();
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throwException(env, "Could not init GLX");
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return -1;
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}
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GLXFBConfig *configs = chooseVisualGLX13(env, pixel_format, false, GLX_PBUFFER_BIT, false);
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if (configs == 0) {
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XFree(configs);
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throwException(env, "No matching pixel format");
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return -1;
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}
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int max;
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glXGetFBConfigAttrib(disp, configs[0], GLX_MAX_PBUFFER_WIDTH, &max);
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if (max < width) {
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XFree(configs);
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throwException(env, "Width too large");
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return -1;
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}
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glXGetFBConfigAttrib(disp, configs[0], GLX_MAX_PBUFFER_HEIGHT, &max);
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if (max < height) {
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XFree(configs);
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throwException(env, "Height too large");
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return -1;
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}
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GLXContext context = glXCreateNewContext(disp, configs[0], GLX_RGBA_TYPE, getCurrentContext(), 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 -1;
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}
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jboolean allow_software_acceleration = getBooleanProperty(env, "org.lwjgl.opengl.Window.allowSoftwareOpenGL");
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if (!allow_software_acceleration && 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 direct GLX context");
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return -1;
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}
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const int buffer_attribs[] = {GLX_PBUFFER_WIDTH, width,
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GLX_PBUFFER_HEIGHT, height,
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GLX_PRESERVED_CONTENTS, True,
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GLX_LARGEST_PBUFFER, False};
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GLXPbuffer buffer = glXCreatePbuffer(disp, configs[0], buffer_attribs);
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XFree(configs);
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PbufferInfo *buffer_info = (PbufferInfo *)malloc(sizeof(PbufferInfo));
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buffer_info->buffer = buffer;
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buffer_info->context = context;
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if (!checkXError(env)) {
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destroyPbuffer(buffer_info);
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return -1;
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}
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return (jint)buffer_info;
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nMakeCurrent
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(JNIEnv *env, jclass clazz, jint handle)
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{
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PbufferInfo *buffer_info = (PbufferInfo *)handle;
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GLXPbuffer buffer = buffer_info->buffer;
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GLXContext context = buffer_info->context;
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if (glXMakeContextCurrent(getDisplay(), buffer, buffer, context) == False) {
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throwException(env, "Could not make pbuffer context current");
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}
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}
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/*
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* Class: org_lwjgl_opengl_Pbuffer
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* Method: nDestroyGL
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* Signature: (I)V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nDestroy
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(JNIEnv *env, jclass clazz, jint handle)
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{
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PbufferInfo *buffer_info = (PbufferInfo *)handle;
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destroyPbuffer(buffer_info);
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nSetAttrib
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(JNIEnv *env, jclass clazz, jint handle, jint attrib, jint value)
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{
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throwException(env, "The render-to-texture extension is not supported.");
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nBindTexImage
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(JNIEnv *env, jclass clazz, jint handle, jint buffer)
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{
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throwException(env, "The render-to-texture extension is not supported.");
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nReleaseTexImage
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(JNIEnv *env, jclass clazz, jint handle, jint buffer)
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{
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throwException(env, "The render-to-texture extension is not supported.");
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}
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