JNIEXPORT void JNICALL Java_org_lwjgl_opengl_ARBImaging_nglGetConvolutionFilterBO(JNIEnv *env, jclass clazz, jint target, jint format, jint type, jlong image_buffer_offset, jlong function_pointer) {
GLvoid *image_address = (GLvoid *)(intptr_t)offsetToPointer(image_buffer_offset);
glGetConvolutionFilterPROC glGetConvolutionFilter = (glGetConvolutionFilterPROC)((intptr_t)function_pointer);
glGetConvolutionFilter(target, format, type, image_address);
}
static int
GetConvolutionFilter(__GLXclientState * cl, GLbyte * pc, GLXContextTag tag)
{
GLint compsize;
GLenum format, type, target;
GLboolean swapBytes;
__GLXcontext *cx;
ClientPtr client = cl->client;
int error;
__GLX_DECLARE_SWAP_VARIABLES;
char *answer, answerBuffer[200];
GLint width = 0, height = 0;
xGLXSingleReply reply = { 0, };
cx = __glXForceCurrent(cl, tag, &error);
if (!cx) {
return error;
}
__GLX_SWAP_INT(pc + 0);
__GLX_SWAP_INT(pc + 4);
__GLX_SWAP_INT(pc + 8);
format = *(GLenum *) (pc + 4);
type = *(GLenum *) (pc + 8);
target = *(GLenum *) (pc + 0);
swapBytes = *(GLboolean *) (pc + 12);
glGetConvolutionParameteriv(target, GL_CONVOLUTION_WIDTH, &width);
if (target == GL_CONVOLUTION_2D) {
height = 1;
}
else {
glGetConvolutionParameteriv(target, GL_CONVOLUTION_HEIGHT, &height);
}
/*
* The two queries above might fail if we're in a state where queries
* are illegal, but then width and height would still be zero anyway.
*/
compsize = __glGetTexImage_size(target, 1, format, type, width, height, 1);
if (compsize < 0)
return BadLength;
glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
__GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
__glXClearErrorOccured();
glGetConvolutionFilter(*(GLenum *) (pc + 0), *(GLenum *) (pc + 4),
*(GLenum *) (pc + 8), answer);
if (__glXErrorOccured()) {
__GLX_BEGIN_REPLY(0);
__GLX_SWAP_REPLY_HEADER();
}
else {
__GLX_BEGIN_REPLY(compsize);
__GLX_SWAP_REPLY_HEADER();
__GLX_SWAP_INT(&width);
__GLX_SWAP_INT(&height);
((xGLXGetConvolutionFilterReply *) &reply)->width = width;
((xGLXGetConvolutionFilterReply *) &reply)->height = height;
__GLX_SEND_VOID_ARRAY(compsize);
}
return Success;
}
