/**
* Attempts to initialize GLX and the core OpenGL library. For this method
* to return JNI_TRUE, the following must be true:
* - libGL must be loaded successfully (via dlopen)
* - all function symbols from libGL must be available and loaded properly
* - the GLX extension must be available through X11
* - client GLX version must be >= 1.3
* If any of these requirements are not met, this method will return
* JNI_FALSE, indicating there is no hope of using GLX/OpenGL for any
* GraphicsConfig in the environment.
*/
static jboolean
GLXGC_InitGLX()
{
int errorbase, eventbase;
const char *version;
J2dRlsTraceLn(J2D_TRACE_INFO, "GLXGC_InitGLX");
if (!OGLFuncs_OpenLibrary()) {
return JNI_FALSE;
}
if (!OGLFuncs_InitPlatformFuncs() ||
!OGLFuncs_InitBaseFuncs() ||
!OGLFuncs_InitExtFuncs())
{
OGLFuncs_CloseLibrary();
return JNI_FALSE;
}
if (!j2d_glXQueryExtension(awt_display, &errorbase, &eventbase)) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGC_InitGLX: GLX extension is not present");
OGLFuncs_CloseLibrary();
return JNI_FALSE;
}
version = j2d_glXGetClientString(awt_display, GLX_VERSION);
if (version == NULL) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGC_InitGLX: could not query GLX version");
OGLFuncs_CloseLibrary();
return JNI_FALSE;
}
// we now only verify that the client GLX version is >= 1.3 (if the
// server does not support GLX 1.3, then we will find that out later
// when we attempt to create a GLXFBConfig)
J2dRlsTraceLn1(J2D_TRACE_INFO,
"GLXGC_InitGLX: client GLX version=%s", version);
if (!((version[0] == '1' && version[2] >= '3') || (version[0] > '1'))) {
J2dRlsTraceLn(J2D_TRACE_ERROR,
"GLXGC_InitGLX: invalid GLX version; 1.3 is required");
OGLFuncs_CloseLibrary();
return JNI_FALSE;
}
return JNI_TRUE;
}
/**
* Attempts to initialize WGL and the core OpenGL library. For this method
* to return JNI_TRUE, the following must be true:
* - opengl32.dll must be loaded successfully (via LoadLibrary)
* - all core WGL/OGL function symbols from opengl32.dll must be
* available and loaded properly
* If any of these requirements are not met, this method will return
* JNI_FALSE, indicating there is no hope of using WGL/OpenGL for any
* GraphicsConfig in the environment.
*/
JNIEXPORT jboolean JNICALL
Java_sun_java2d_opengl_WGLGraphicsConfig_initWGL(JNIEnv *env, jclass wglgc)
{
J2dRlsTraceLn(J2D_TRACE_INFO, "WGLGraphicsConfig_initWGL");
if (!OGLFuncs_OpenLibrary()) {
return JNI_FALSE;
}
if (!OGLFuncs_InitPlatformFuncs() ||
!OGLFuncs_InitBaseFuncs())
{
OGLFuncs_CloseLibrary();
return JNI_FALSE;
}
return JNI_TRUE;
}
/**
* Attempts to initialize WGL and the core OpenGL library. For this method
* to return JNI_TRUE, the following must be true:
* - opengl32.dll must be loaded successfully (via LoadLibrary)
* - all core WGL/OGL function symbols from opengl32.dll must be
* available and loaded properly
* If any of these requirements are not met, this method will return
* JNI_FALSE, indicating there is no hope of using WGL/OpenGL for any
* GraphicsConfig in the environment.
*/
static jboolean
WGLGC_InitWGL()
{
J2dTraceLn(J2D_TRACE_INFO, "in WGLGC_InitWGL");
if (!OGLFuncs_OpenLibrary()) {
return JNI_FALSE;
}
if (!OGLFuncs_InitPlatformFuncs() ||
!OGLFuncs_InitBaseFuncs())
{
OGLFuncs_CloseLibrary();
return JNI_FALSE;
}
return JNI_TRUE;
}