static int
GetHistogram(__GLXclientState * cl, GLbyte * pc, GLXContextTag tag)
{
GLint compsize;
GLenum format, type, target;
GLboolean swapBytes, reset;
__GLXcontext *cx;
ClientPtr client = cl->client;
int error;
__GLX_DECLARE_SWAP_VARIABLES;
char *answer, answerBuffer[200];
GLint width = 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);
reset = *(GLboolean *) (pc + 13);
glGetHistogramParameteriv(target, GL_HISTOGRAM_WIDTH, &width);
/*
* The one query above might fail if we're in a state where queries
* are illegal, but then width would still be zero anyway.
*/
compsize = __glGetTexImage_size(target, 1, format, type, width, 1, 1);
if (compsize < 0)
return BadLength;
glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
__GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
__glXClearErrorOccured();
glGetHistogram(target, reset, format, type, answer);
if (__glXErrorOccured()) {
__GLX_BEGIN_REPLY(0);
__GLX_SWAP_REPLY_HEADER();
}
else {
__GLX_BEGIN_REPLY(compsize);
__GLX_SWAP_REPLY_HEADER();
__GLX_SWAP_INT(&width);
((xGLXGetHistogramReply *) &reply)->width = width;
__GLX_SEND_VOID_ARRAY(compsize);
}
return Success;
}
int __glXDisp_GetHistogramParameteriv(__GLXclientState *cl, GLbyte *pc)
{
GLenum pname;
GLint compsize;
__GLXcontext *cx;
ClientPtr client = cl->client;
int error;
GLint answerBuffer[200];
char *answer;
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
pname = *(GLenum *)(pc + 4);
compsize = __glGetHistogramParameteriv_size(pname);
if (compsize < 0) compsize = 0;
__GLX_GET_ANSWER_BUFFER(answer,cl,compsize*4,4);
__glXClearErrorOccured();
glGetHistogramParameteriv(
*(GLenum *)(pc + 0),
*(GLenum *)(pc + 4),
(GLint *) answer
);
if (__glXErrorOccured()) {
__GLX_BEGIN_REPLY(0);
__GLX_PUT_SIZE(0);
__GLX_SEND_HEADER();
} else if (compsize == 1) {
__GLX_BEGIN_REPLY(0);
__GLX_PUT_SIZE(1);
__GLX_PUT_INT();
__GLX_SEND_HEADER();
} else {
__GLX_BEGIN_REPLY(compsize*4);
__GLX_PUT_SIZE(compsize);
__GLX_SEND_HEADER();
__GLX_SEND_INT_ARRAY(compsize);
}
return Success;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_ARBImaging_nglGetHistogramParameteriv(JNIEnv *env, jclass clazz, jint target, jint pname, jlong params, jlong function_pointer) {
GLint *params_address = (GLint *)(intptr_t)params;
glGetHistogramParameterivPROC glGetHistogramParameteriv = (glGetHistogramParameterivPROC)((intptr_t)function_pointer);
glGetHistogramParameteriv(target, pname, params_address);
}