241 lines
8.7 KiB
C++
241 lines
8.7 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, jobject handle_buffer)
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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 the 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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decDisplay();
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}
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static bool checkPbufferCaps(JNIEnv *env, GLXFBConfig config, int width, int height) {
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int max;
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int result = glXGetFBConfigAttrib(getDisplay(), config, GLX_MAX_PBUFFER_WIDTH, &max);
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if (result != Success) {
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throwException(env, "Could not get GLX_MAX_PBUFFER_WIDTH from configuration");
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return false;
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}
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if (max < width) {
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throwException(env, "Width too large");
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return false;
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}
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result = glXGetFBConfigAttrib(getDisplay(), config, GLX_MAX_PBUFFER_HEIGHT, &max);
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if (result != Success) {
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throwException(env, "Could not get GLX_MAX_PBUFFER_WIDTH from configuration");
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return false;
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}
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if (max < height) {
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throwException(env, "Height too large");
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return false;
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}
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return true;
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}
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static bool createPbufferUsingUniqueContext(JNIEnv *env, PbufferInfo *pbuffer_info, jobject pixel_format, int width, int height, const int *buffer_attribs) {
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GLXFBConfig *configs = chooseVisualGLX13(env, pixel_format, false, GLX_PBUFFER_BIT, false);
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if (configs == NULL) {
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throwException(env, "No matching pixel format");
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return false;
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}
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if (!checkPbufferCaps(env, configs[0], width, height)) {
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XFree(configs);
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return false;
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}
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GLXContext context = glXCreateNewContext(getDisplay(), configs[0], GLX_RGBA_TYPE, getCurrentGLXContext(), 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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jboolean allow_software_acceleration = getBooleanProperty(env, "org.lwjgl.opengl.Window.allowSoftwareOpenGL");
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if (!allow_software_acceleration && glXIsDirect(getDisplay(), context) == False) {
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glXDestroyContext(getDisplay(), 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 false;
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}
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GLXPbuffer buffer = glXCreatePbuffer(getDisplay(), configs[0], buffer_attribs);
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XFree(configs);
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pbuffer_info->context = context;
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pbuffer_info->buffer = buffer;
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return true;
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}
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static bool configMatches(const GLXFBConfig config1, const GLXFBConfig config2, int glx_val) {
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int config_val1;
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int config_val2;
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if (glXGetFBConfigAttrib(getDisplay(), config1, glx_val, &config_val1) != Success)
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return false;
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if (glXGetFBConfigAttrib(getDisplay(), config2, glx_val, &config_val2) != Success)
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return false;
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return config_val1 == config_val2;
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}
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static GLXFBConfig chooseSingleBufferedConfigFromConfig(const GLXFBConfig orig_config) {
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int num_elements;
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GLXFBConfig *configs = glXGetFBConfigs(getDisplay(), getCurrentScreen(), &num_elements);
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for (int i = 0; i < num_elements; i++) {
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GLXFBConfig config = configs[i];
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int double_buffer;
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int drawable_type;
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if (glXGetFBConfigAttrib(getDisplay(), config, GLX_DOUBLEBUFFER, &double_buffer) != Success)
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return NULL;
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if (glXGetFBConfigAttrib(getDisplay(), config, GLX_DRAWABLE_TYPE, &drawable_type) != Success)
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return NULL;
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if (double_buffer != False || (drawable_type & GLX_PBUFFER_BIT == 0))
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continue;
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if (configMatches(config, orig_config, GLX_RED_SIZE) &&
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configMatches(config, orig_config, GLX_GREEN_SIZE) &&
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configMatches(config, orig_config, GLX_BLUE_SIZE) &&
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configMatches(config, orig_config, GLX_ALPHA_SIZE) &&
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configMatches(config, orig_config, GLX_DEPTH_SIZE) &&
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configMatches(config, orig_config, GLX_STENCIL_SIZE) &&
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configMatches(config, orig_config, GLX_STEREO) &&
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configMatches(config, orig_config, GLX_AUX_BUFFERS) &&
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configMatches(config, orig_config, GLX_ACCUM_RED_SIZE) &&
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configMatches(config, orig_config, GLX_ACCUM_GREEN_SIZE) &&
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configMatches(config, orig_config, GLX_ACCUM_BLUE_SIZE) &&
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configMatches(config, orig_config, GLX_ACCUM_ALPHA_SIZE) &&
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configMatches(config, orig_config, GLX_RENDER_TYPE) &&
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(!extgl_Extensions.GLX_ARB_multisample || (configMatches(config, orig_config, GLX_SAMPLE_BUFFERS_ARB) &&
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configMatches(config, orig_config, GLX_SAMPLES_ARB)))) {
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return config;
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}
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}
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return NULL;
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nCreate(JNIEnv *env, jclass clazz, jobject handle_buffer, jint width, jint height, jobject pixel_format, 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;
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}
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int current_screen = getCurrentScreen();
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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;
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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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None, None};
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if (env->GetDirectBufferCapacity(handle_buffer) < sizeof(PbufferInfo)) {
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decDisplay();
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throwException(env, "Handle buffer not large enough");
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return;
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}
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PbufferInfo *buffer_info = (PbufferInfo *)env->GetDirectBufferAddress(handle_buffer);
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bool result;
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result = createPbufferUsingUniqueContext(env, buffer_info, pixel_format, width, height, buffer_attribs);
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if (!result || !checkXError(env)) {
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decDisplay();
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destroyPbuffer(buffer_info);
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return;
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}
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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, jobject handle_buffer)
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{
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PbufferInfo *buffer_info = (PbufferInfo *)env->GetDirectBufferAddress(handle_buffer);
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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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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nDestroy
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(JNIEnv *env, jclass clazz, jobject handle_buffer)
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{
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PbufferInfo *buffer_info = (PbufferInfo *)env->GetDirectBufferAddress(handle_buffer);
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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, jobject handle_buffer, 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, jobject handle_buffer, 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, jobject handle_buffer, 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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