/**
* Initializes the shared context and shared surface.
*/
static jint
GLXGC_InitSharedContext(JNIEnv *env, GLXGraphicsConfigInfo *glxinfo)
{
GLXPbuffer pbuffer;
int attrlist[] = {GLX_PBUFFER_WIDTH, 1,
GLX_PBUFFER_HEIGHT, 1,
GLX_PRESERVED_CONTENTS, GL_FALSE, 0};
J2dTraceLn(J2D_TRACE_INFO, "in GLXGC_InitSharedContext");
sharedContext = GLXGC_InitOGLContext(env, glxinfo, NULL, JNI_FALSE);
if (sharedContext == NULL) {
J2dTraceLn(J2D_TRACE_ERROR, "could not create shared context");
return SD_FAILURE;
}
sharedSurface = j2d_glXCreatePbuffer(awt_display, glxinfo->fbconfig,
attrlist);
if (sharedSurface == 0) {
J2dTraceLn(J2D_TRACE_ERROR, "could not create shared surface");
GLXGC_DestroyOGLContext(env, sharedContext);
return SD_FAILURE;
}
sharedConfigInfo = glxinfo;
return SD_SUCCESS;
}
/**
* This is the native dispose method that gets invoked when the Java-level
* thread associated with this context is about to go away. This method
* invokes the AWT_LOCK mechanism for thread safety, then destroys the
* OGLContext kept in thread-local storage.
*/
static void
GLXGC_DisposeOGLContext(JNIEnv *env, jlong pData)
{
OGLContext *oglc = (OGLContext *)jlong_to_ptr(pData);
J2dTraceLn(J2D_TRACE_INFO, "in GLXGC_DisposeOGLContext");
AWT_LOCK();
GLXGC_DestroyOGLContext(env, oglc);
AWT_FLUSH_UNLOCK();
}
/**
* Disposes all memory and resources associated with the given
* GLXGraphicsConfigInfo (including its native OGLContext data).
*/
void
OGLGC_DestroyOGLGraphicsConfig(jlong pConfigInfo)
{
GLXGraphicsConfigInfo *glxinfo =
(GLXGraphicsConfigInfo *)jlong_to_ptr(pConfigInfo);
J2dTraceLn(J2D_TRACE_INFO, "OGLGC_DestroyOGLGraphicsConfig");
if (glxinfo == NULL) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"OGLGC_DestroyOGLGraphicsConfig: info is null");
return;
}
if (glxinfo->context != NULL) {
GLXGC_DestroyOGLContext(glxinfo->context);
}
free(glxinfo);
}
/**
* Determines whether the GLX pipeline can be used for a given GraphicsConfig
* provided its screen number and visual ID. If the minimum requirements are
* met, the native GLXGraphicsConfigInfo structure is initialized for this
* GraphicsConfig with the necessary information (GLXFBConfig, etc.)
* and a pointer to this structure is returned as a jlong. If
* initialization fails at any point, zero is returned, indicating that GLX
* cannot be used for this GraphicsConfig (we should fallback on the existing
* X11 pipeline).
*/
JNIEXPORT jlong JNICALL
Java_sun_java2d_opengl_GLXGraphicsConfig_getGLXConfigInfo(JNIEnv *env,
jclass glxgc,
jint screennum,
jint visnum)
{
#ifndef HEADLESS
OGLContext *oglc;
GLXFBConfig fbconfig;
GLXContext context;
GLXPbuffer scratch;
GLXGraphicsConfigInfo *glxinfo;
jint caps = CAPS_EMPTY;
int db, alpha;
const unsigned char *versionstr;
J2dRlsTraceLn(J2D_TRACE_INFO, "GLXGraphicsConfig_getGLXConfigInfo");
if (usingXinerama) {
// when Xinerama is enabled, the screen ID needs to be 0
screennum = 0;
}
fbconfig = GLXGC_InitFBConfig(env, screennum, (VisualID)visnum);
if (fbconfig == 0) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: could not create fbconfig");
return 0L;
}
if (sharedContext == 0) {
// create the one shared context
sharedContext = j2d_glXCreateNewContext(awt_display, fbconfig,
GLX_RGBA_TYPE, 0, GL_TRUE);
if (sharedContext == 0) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: could not create shared context");
return 0L;
}
}
// create the GLXContext for this GLXGraphicsConfig
context = j2d_glXCreateNewContext(awt_display, fbconfig,
GLX_RGBA_TYPE, sharedContext,
GL_TRUE);
if (context == 0) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: could not create GLX context");
return 0L;
}
// this is pretty sketchy, but it seems to be the easiest way to create
// some form of GLXDrawable using only the display and a GLXFBConfig
// (in order to make the context current for checking the version,
// extensions, etc)...
scratch = GLXGC_InitScratchPbuffer(fbconfig);
if (scratch == 0) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: could not create scratch pbuffer");
j2d_glXDestroyContext(awt_display, context);
return 0L;
}
// the context must be made current before we can query the
// version and extension strings
j2d_glXMakeContextCurrent(awt_display, scratch, scratch, context);
#ifdef __sparc
/*
* 6438225: The software rasterizer used by Sun's OpenGL libraries
* for certain boards has quality issues, and besides, performance
* of these boards is not high enough to justify the use of the
* OpenGL-based Java 2D pipeline. If we detect one of the following
* boards via the GL_RENDERER string, just give up:
* - FFB[2[+]] ("Creator[3D]")
* - PGX-series ("m64")
* - AFB ("Elite3D")
*/
{
const char *renderer = (const char *)j2d_glGetString(GL_RENDERER);
J2dRlsTraceLn1(J2D_TRACE_VERBOSE,
"GLXGraphicsConfig_getGLXConfigInfo: detected renderer (%s)",
(renderer == NULL) ? "null" : renderer);
if (renderer == NULL ||
strncmp(renderer, "Creator", 7) == 0 ||
strncmp(renderer, "SUNWm64", 7) == 0 ||
strncmp(renderer, "Elite", 5) == 0)
{
J2dRlsTraceLn1(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: unsupported board (%s)",
(renderer == NULL) ? "null" : renderer);
j2d_glXMakeContextCurrent(awt_display, None, None, NULL);
j2d_glXDestroyPbuffer(awt_display, scratch);
j2d_glXDestroyContext(awt_display, context);
return 0L;
}
}
#endif /* __sparc */
versionstr = j2d_glGetString(GL_VERSION);
OGLContext_GetExtensionInfo(env, &caps);
// destroy the temporary resources
j2d_glXMakeContextCurrent(awt_display, None, None, NULL);
J2dRlsTraceLn1(J2D_TRACE_INFO,
"GLXGraphicsConfig_getGLXConfigInfo: OpenGL version=%s",
(versionstr == NULL) ? "null" : (char *)versionstr);
if (!OGLContext_IsVersionSupported(versionstr)) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: OpenGL 1.2 is required");
j2d_glXDestroyPbuffer(awt_display, scratch);
j2d_glXDestroyContext(awt_display, context);
return 0L;
}
// get config-specific capabilities
j2d_glXGetFBConfigAttrib(awt_display, fbconfig, GLX_DOUBLEBUFFER, &db);
if (db) {
caps |= CAPS_DOUBLEBUFFERED;
}
j2d_glXGetFBConfigAttrib(awt_display, fbconfig, GLX_ALPHA_SIZE, &alpha);
if (alpha > 0) {
caps |= CAPS_STORED_ALPHA;
}
// initialize the OGLContext, which wraps the GLXFBConfig and GLXContext
oglc = GLXGC_InitOGLContext(fbconfig, context, scratch, caps);
if (oglc == NULL) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: could not create oglc");
j2d_glXDestroyPbuffer(awt_display, scratch);
j2d_glXDestroyContext(awt_display, context);
return 0L;
}
J2dTraceLn(J2D_TRACE_VERBOSE,
"GLXGraphicsConfig_getGLXConfigInfo: finished checking dependencies");
// create the GLXGraphicsConfigInfo record for this config
glxinfo = (GLXGraphicsConfigInfo *)malloc(sizeof(GLXGraphicsConfigInfo));
if (glxinfo == NULL) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGraphicsConfig_getGLXConfigInfo: could not allocate memory for glxinfo");
GLXGC_DestroyOGLContext(oglc);
return 0L;
}
glxinfo->screen = screennum;
glxinfo->visual = visnum;
glxinfo->context = oglc;
glxinfo->fbconfig = fbconfig;
return ptr_to_jlong(glxinfo);
#else
return 0L;
#endif /* !HEADLESS */
}
