JNIEXPORT void JNICALL Java_org_lwjgl_opengl_WindowsPbufferPeerInfo_nCreate
(JNIEnv *env, jobject self, jobject peer_info_handle,
jint width, jint height, jobject pixel_format,
jobject pixelFormatCaps, jobject pBufferAttribs)
{
int origin_x = 0; int origin_y = 0;
HWND dummy_hwnd;
HDC dummy_hdc;
HPBUFFERARB Pbuffer;
HDC Pbuffer_dc;
WGLExtensions extensions;
const int *pBufferAttribs_ptr;
WindowsPeerInfo *peer_info = (WindowsPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
int pixel_format_id;
if ( pBufferAttribs != NULL ) {
pBufferAttribs_ptr = (const int *)(*env)->GetDirectBufferAddress(env, pBufferAttribs);
} else {
pBufferAttribs_ptr = NULL;
}
if (!getExtensions(env, &extensions, pixel_format, pixelFormatCaps))
return;
dummy_hwnd = createDummyWindow(origin_x, origin_y);
if (dummy_hwnd == NULL) {
throwException(env, "Could not create dummy window");
return;
}
dummy_hdc = GetDC(dummy_hwnd);
pixel_format_id = findPixelFormatOnDC(env, dummy_hdc, origin_x, origin_y, pixel_format, pixelFormatCaps, false, false, true, false);
if (pixel_format_id == -1) {
closeWindow(&dummy_hwnd, &dummy_hdc);
return;
}
Pbuffer = extensions.wglCreatePbufferARB(dummy_hdc, pixel_format_id, width, height, pBufferAttribs_ptr);
closeWindow(&dummy_hwnd, &dummy_hdc);
if (Pbuffer == NULL) {
throwException(env, "Could not create Pbuffer");
return;
}
Pbuffer_dc = extensions.wglGetPbufferDCARB(Pbuffer);
if (Pbuffer_dc == NULL) {
extensions.wglDestroyPbufferARB(Pbuffer);
throwException(env, "Could not get Pbuffer DC");
return;
}
peer_info->u.pbuffer.extensions = extensions;
peer_info->u.pbuffer.pbuffer = Pbuffer;
peer_info->drawable_hdc = Pbuffer_dc;
}
static bool getExtensions(JNIEnv *env, WGLExtensions *extensions, jobject pixel_format, jobject pixelFormatCaps) {
int origin_x = 0; int origin_y = 0;
HWND dummy_hwnd;
HDC dummy_hdc;
HGLRC dummy_context;
HDC saved_hdc;
HGLRC saved_context;
int pixel_format_id;
dummy_hwnd = createDummyWindow(origin_x, origin_y);
if (dummy_hwnd == NULL) {
throwException(env, "Could not create dummy window");
return false;
}
dummy_hdc = GetDC(dummy_hwnd);
pixel_format_id = findPixelFormatOnDC(env, dummy_hdc, origin_x, origin_y, pixel_format, pixelFormatCaps, false, true, false, false);
if (pixel_format_id == -1) {
closeWindow(&dummy_hwnd, &dummy_hdc);
return false;
}
if (!applyPixelFormat(env, dummy_hdc, pixel_format_id)) {
closeWindow(&dummy_hwnd, &dummy_hdc);
return false;
}
dummy_context = wglCreateContext(dummy_hdc);
if (dummy_context == NULL) {
closeWindow(&dummy_hwnd, &dummy_hdc);
throwException(env, "Could not create dummy context");
return false;
}
saved_hdc = wglGetCurrentDC();
saved_context = wglGetCurrentContext();
if (!wglMakeCurrent(dummy_hdc, dummy_context)) {
wglMakeCurrent(saved_hdc, saved_context);
closeWindow(&dummy_hwnd, &dummy_hdc);
wglDeleteContext(dummy_context);
throwException(env, "Could not make dummy context current");
return false;
}
extgl_InitWGL(extensions);
if (!wglMakeCurrent(saved_hdc, saved_context))
printfDebugJava(env, "ERROR: Could not restore current context");
closeWindow(&dummy_hwnd, &dummy_hdc);
wglDeleteContext(dummy_context);
return true;
}
JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_WindowsPeerInfo_nChoosePixelFormat
(JNIEnv *env, jclass clazz, jlong hdc_ptr, jint origin_x, jint origin_y, jobject pixel_format, jobject pixel_format_caps, jboolean use_hdc_bpp, jboolean window, jboolean pbuffer, jboolean double_buffer) {
HDC hdc = (HDC)(INT_PTR)hdc_ptr;
return findPixelFormatOnDC(env, hdc, origin_x, origin_y, pixel_format, pixel_format_caps, use_hdc_bpp, window, pbuffer, double_buffer);
}
