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pogl_gl_top.xs
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pogl_gl_top.xs
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/* Last saved: Sat 10 Jul 2010 12:57:04 PM*/
/* Copyright (c) 1998 Kenneth Albanowski. All rights reserved.
* Copyright (c) 2007 Bob Free. All rights reserved.
* Copyright (c) 2009 Chris Marshall. All rights reserved.
* This program is free software; you can redistribute it and/or
* modify it under the same terms as Perl itself.
*/
/* OpenGL GLX bindings */
#define IN_POGL_GLX_XS
#include <stdio.h>
#include "pgopogl.h"
#ifdef HAVE_GL
#include "gl_util.h"
/* Note: this is caching procs once for all contexts */
/* !!! This should instead cache per context */
#if defined(_WIN32) || (defined(__CYGWIN__) && defined(HAVE_W32API))
#define loadProc(proc,name) \
{ \
if (!proc) \
{ \
proc = (void *)wglGetProcAddress(name); \
if (!proc) croak(name " is not supported by this renderer"); \
} \
}
#define testProc(proc,name) ((proc) ? 1 : !!(proc = (void *)wglGetProcAddress(name)))
#else /* not using WGL */
#define loadProc(proc,name)
#define testProc(proc,name) 1
#endif /* not defined _WIN32, __CYGWIN__, and HAVE_W32API */
#endif /* defined HAVE_GL */
#ifdef HAVE_GLX
#include "glx_util.h"
#endif /* defined HAVE_GLX */
#ifdef HAVE_GLU
#include "glu_util.h"
#endif /* defined HAVE_GLU */
#ifdef IN_POGL_GLX_XS
#ifdef HAVE_GLX
# define HAVE_GLpc /* Perl interface */
# define nativeWindowId(d, w) (w)
static Bool WaitForNotify(Display *d, XEvent *e, char *arg) {
return (e->type == MapNotify) && (e->xmap.window == (Window)arg);
}
# define glpResizeWindow(s1,s2,w,d) XResizeWindow(d,w,s1,s2)
# define glpMoveWindow(s1,s2,w,d) XMoveWindow(d,w,s1,s2)
# define glpMoveResizeWindow(s1,s2,s3,s4,w,d) XMoveResizeWindow(d,w,s1,s2,s3,s4)
#endif /* defined HAVE_GLX */
#ifdef __PM__
# define HAVE_GLpc /* Perl interface */
# define auxXWindow() (croak("Not implemented: auxXWindow"),0)
HMQ hmq;
AV *EventAv;
unsigned long LastEventMask; /* !! Common for all the windows */
Display myDisplay;
#endif /* defined __PM__ */
static int debug = 0;
#ifdef HAVE_GLpc
# define NUM_ARG 7 /* Number of mandatory args to glpcOpenWindow */
Display *dpy;
int dpy_open;
XVisualInfo *vi;
Colormap cmap;
XSetWindowAttributes swa;
Window win;
GLXContext ctx;
static int default_attributes[] = { GLX_DOUBLEBUFFER, GLX_RGBA, None };
#endif /* defined HAVE_GLpc */
static int DBUFFER_HACK = 0;
#define __had_dbuffer_hack() (DBUFFER_HACK)
#endif /* End IN_POGL_GLX_XS */
/********************/
/* GPGPU Utils */
/********************/
GLint FBO_MAX = -1;
/* Get max GPGPU data size */
int gpgpu_size(void)
{
#if defined(GL_ARB_texture_rectangle) && defined(GL_ARB_texture_float) && \
defined(GL_ARB_fragment_program) && defined(GL_EXT_framebuffer_object)
if (FBO_MAX == -1)
{
if (testProc(glProgramStringARB,"glProgramStringARB") &&
testProc(glGenProgramsARB,"glGenProgramsARB") &&
testProc(glBindProgramARB,"glBindProgramARB") &&
testProc(glIsProgramARB,"glIsProgramARB") &&
testProc(glProgramLocalParameter4fvARB,"glProgramLocalParameter4fvARB") &&
testProc(glDeleteProgramsARB,"glDeleteProgramsARB") &&
testProc(glGenFramebuffersEXT,"glGenFramebuffersEXT") &&
testProc(glGenRenderbuffersEXT,"glGenRenderbuffersEXT") &&
testProc(glBindFramebufferEXT,"glBindFramebufferEXT") &&
testProc(glFramebufferTexture2DEXT,"glFramebufferTexture2DEXT") &&
testProc(glBindRenderbufferEXT,"glBindRenderbufferEXT") &&
testProc(glRenderbufferStorageEXT,"glRenderbufferStorageEXT") &&
testProc(glFramebufferRenderbufferEXT,"glFramebufferRenderbufferEXT") &&
testProc(glCheckFramebufferStatusEXT,"glCheckFramebufferStatusEXT") &&
testProc(glDeleteRenderbuffersEXT,"glDeleteRenderbuffersEXT") &&
testProc(glDeleteFramebuffersEXT,"glDeleteFramebuffersEXT"))
{
glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE_EXT,&FBO_MAX);
}
else
{
FBO_MAX = 0;
}
}
return(FBO_MAX);
#else
return(0);
#endif
}
/* Get max square array width for a given GPGPU data size */
int gpgpu_width(int len)
{
int max = gpgpu_size();
if (max && len && !(len%3))
{
int count = len / 3;
int w = (int)sqrt(count);
while ((w <= count) && (w <= max))
{
if (!(count%w)) return(w);
w++;
}
}
return(0);
}
#ifdef GL_ARB_fragment_program
static char affine_prog[] =
"!!ARBfp1.0\n"
"PARAM affine[4] = {program.local[0..3]};\n"
"TEMP decal;\n"
"TEX decal, fragment.texcoord[0], texture[0], RECT;\n"
"MOV decal.w, 1.0;\n"
"DP4 result.color.x, decal, affine[0];\n"
"DP4 result.color.y, decal, affine[1];\n"
"DP4 result.color.z, decal, affine[2];\n"
"END\n";
/* Enable affine shader program */
void enable_affine(oga_struct * oga)
{
if (!oga) return;
if (!oga->affine_handle)
{
/* Load shader program */
glGenProgramsARB(1,&oga->affine_handle);
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,oga->affine_handle);
glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB,
GL_PROGRAM_FORMAT_ASCII_ARB, strlen(affine_prog),affine_prog);
/* Validate shader program */
if (!glIsProgramARB(oga->affine_handle))
{
GLint errorPos;
glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB,&errorPos);
if (errorPos < 0) errorPos = strlen(affine_prog);
croak("Affine fragment program error\n%s",&affine_prog[errorPos]);
}
}
glEnable(GL_FRAGMENT_PROGRAM_ARB);
}
/* Disable affine shader program */
void disable_affine(oga_struct * oga)
{
if (!oga) return;
if (oga->affine_handle) glDisable(GL_FRAGMENT_PROGRAM_ARB);
}
#endif
#ifdef GL_EXT_framebuffer_object
/* Unbind an FBO to an OGA */
void release_fbo(oga_struct * oga)
{
if (oga->fbo_handle)
{
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glDeleteFramebuffersEXT(1,&oga->fbo_handle);
}
if (oga->tex_handle)
{
glBindTexture(oga->target,0);
if (oga->tex_handle[0]) glDeleteTextures(1,&oga->tex_handle[0]);
if (oga->tex_handle[1]) glDeleteTextures(1,&oga->tex_handle[1]);
}
}
/* Enable an FBO bound to an OGA */
void enable_fbo(oga_struct * oga, int w, int h, GLuint target,
GLuint pixel_type, GLuint pixel_format, GLuint element_size)
{
if (!oga) return;
if ((oga->fbo_w != w) || (oga->fbo_h != h) ||
(oga->target != target) ||
(oga->pixel_type != pixel_type) ||
(oga->pixel_format != pixel_format) ||
(oga->element_size != element_size)) release_fbo(oga);
if (!oga->fbo_handle)
{
GLenum status;
/* Save params */
oga->fbo_w = w;
oga->fbo_h = h;
oga->target = target;
oga->pixel_type = pixel_type;
oga->pixel_format = pixel_format;
oga->element_size = element_size;
/* Set up FBO */
glGenTextures(2,oga->tex_handle);
glGenFramebuffersEXT(1,&oga->fbo_handle);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,oga->fbo_handle);
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0,w,0,h);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glBindTexture(target,oga->tex_handle[1]);
glTexParameteri(target,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(target,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameteri(target,GL_TEXTURE_WRAP_S,GL_CLAMP);
glTexParameteri(target,GL_TEXTURE_WRAP_T,GL_CLAMP);
glTexImage2D(target,0,pixel_type,w,h,0,
pixel_format,element_size,0);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,target,oga->tex_handle[1],0);
status = glCheckFramebufferStatusEXT(GL_RENDERBUFFER_EXT);
if (status) croak("enable_fbo status: %04X\n",status);
}
else
{
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,oga->fbo_handle);
}
/* Load data */
glBindTexture(target,oga->tex_handle[0]);
glTexImage2D(target,0,pixel_type,w,h,0,
pixel_format,element_size,oga->data);
glEnable(target);
//glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
glBindTexture(target,oga->tex_handle[0]);
glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_DECAL);
}
/* Disable an FBO bound to an OGA */
void disable_fbo(oga_struct * oga)
{
if (!oga) return;
if (oga->fbo_handle)
{
glDisable(oga->target);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,0);
}
}
#endif
MODULE = OpenGL::GL::Top PACKAGE = OpenGL
#// Test for GL
int
_have_gl()
CODE:
#ifdef HAVE_GL
RETVAL = 1;
#else
RETVAL = 0;
#endif /* defined HAVE_GL */
OUTPUT:
RETVAL
#// Test for GLU
int
_have_glu()
CODE:
#ifdef HAVE_GLU
RETVAL = 1;
#else
RETVAL = 0;
#endif /* defined HAVE_GLU */
OUTPUT:
RETVAL
#// Test for GLUT
int
_have_glut()
CODE:
#if defined(HAVE_GLUT) || defined(HAVE_FREEGLUT)
RETVAL = 1;
#else
RETVAL = 0;
#endif /* defined HAVE_GLUT or HAVE_FREEGLUT */
OUTPUT:
RETVAL
#// Test for FreeGLUT
int
_have_freeglut()
CODE:
#if defined(HAVE_FREEGLUT)
RETVAL = 1;
#else
RETVAL = 0;
#endif /* defined HAVE_FREEGLUT */
OUTPUT:
RETVAL
#// Test for GLX
int
_have_glx()
CODE:
#ifdef HAVE_GLX
RETVAL = 1;
#else
RETVAL = 0;
#endif /* defined HAVE_GLX */
OUTPUT:
RETVAL
#// Test for GLpc
int
_have_glp()
CODE:
#ifdef HAVE_GLpc
RETVAL = 1;
#else
RETVAL = 0;
#endif /* defined HAVE_GLpc */
OUTPUT:
RETVAL
# /* 13000 lines snipped */
##################### GLU #########################
############################## GLUT #########################
# /* This is assigned to GLX for now. The glp*() functions should be split out */
#ifdef IN_POGL_GLX_XS
# /* The following material is directly copied from Stan Melax's original OpenGL-0.4 */
#ifdef __PM__
#// morphPM();
void
morphPM()
#endif
int
__had_dbuffer_hack()
#ifdef HAVE_GLpc /* GLX or __PM__ */
#// $ID = glpcOpenWindow($x,$y,$w,$h,$pw,$steal,$event_mask,@attribs);
HV *
glpcOpenWindow(x,y,w,h,pw,event_mask,steal, ...)
int x
int y
int w
int h
int pw
long event_mask
int steal
CODE:
{
XEvent event;
Window pwin = (Window)pw;
unsigned int err;
int *attributes = default_attributes + 1;
int *a_buf = NULL;
RETVAL = newHV(); /* Create hash to return GL Object info */
if(items > NUM_ARG){
int i;
a_buf = (int *) malloc((items-NUM_ARG+2) * sizeof(int));
a_buf[0] = GLX_DOUBLEBUFFER; /* Preallocate */
attributes = a_buf + 1;
for (i=NUM_ARG; i<items; i++) {
attributes[i-NUM_ARG] = SvIV(ST(i));
}
attributes[items-NUM_ARG] = None;
}
if (debug) {
int i;
for (i=0; attributes[i] != None; i++) {
printf("att=%d %d\n", i, attributes[i]);
}
}
/* get a connection */
if (!dpy_open) {
dpy = XOpenDisplay(NULL);
dpy_open = 1;
}
if (!dpy) {
croak("ERROR: failed to get an X connection");
} else if (debug) {
printf("Display open %x\n", dpy);
}
/* get an appropriate visual */
vi = glXChooseVisual(dpy, DefaultScreen(dpy), attributes);
if (!vi) { /* Might have happened that one does not
* *need* DOUBLEBUFFER, but the display does
* not provide SINGLEBUFFER; and the semantic
* of GLX_DOUBLEBUFFER is that if it misses,
* only SINGLEBUFFER visuals are selected. */
attributes--; /* GLX_DOUBLEBUFFER preallocated there */
vi = glXChooseVisual(dpy, DefaultScreen(dpy), attributes); /* Retry */
if (vi)
DBUFFER_HACK = 1;
}
if (a_buf)
free(a_buf);
if(!vi) {
croak("ERROR: failed to get an X visual\n");
} else if (debug) {
printf("Visual open %x\n", vi);
}
/* A blank line here will confuse xsubpp ;-) */
#ifdef HAVE_GLX
/* create a GLX context */
ctx = glXCreateContext(dpy, vi, 0, GL_TRUE);
if (!ctx) {
croak("ERROR: failed to get an X Context");
} else if (debug) {
printf("Context Created %x\n", ctx);
}
/* create a color map */
cmap = XCreateColormap(dpy, RootWindow(dpy, vi->screen),
vi->visual, AllocNone);
/* create a window */
swa.colormap = cmap;
swa.border_pixel = 0;
swa.event_mask = event_mask;
#endif /* defined HAVE_GLX */
if (!pwin) {
pwin = RootWindow(dpy, vi->screen);
if (debug) printf("Using root as parent window 0x%x\n", pwin);
}
if (steal) {
win = nativeWindowId(dpy, pwin); /* What about depth/visual */
} else {
win = XCreateWindow(dpy, pwin,
x, y, w, h,
0, vi->depth, InputOutput, vi->visual,
CWBorderPixel|CWColormap|CWEventMask, &swa);
/* NOTE: PDL code had CWBackPixel above */
}
if (!win) {
croak("No Window");
} else {
if (debug) printf("win = 0x%x\n", win);
}
XMapWindow(dpy, win);
#ifndef HAVE_GLX /* For OS/2 GLX emulation stuff -chm 2009.09.14 */
/* On OS/2: cannot create a context before mapping something... */
/* create a GLX context */
ctx = glXCreateContext(dpy, vi, 0, GL_TRUE);
if (!ctx)
croak("No context!\n");
LastEventMask = event_mask;
#else /* HAVE_GLX, this is the default branch */
if ( (event_mask & StructureNotifyMask) && !steal ) {
XIfEvent(dpy, &event, WaitForNotify, (char*)win);
}
#endif /* not defined HAVE_GLX */
/* connect the context to the window */
if (!glXMakeCurrent(dpy, win, ctx))
croak("Non current");
if (debug)
printf("Display=0x%x Window=0x%x Context=0x%x\n",dpy, win, ctx);
/* Create the GL object hash information */
hv_store(RETVAL, "Display", strlen("Display"), newSViv(PTR2IV(dpy)), 0);
hv_store(RETVAL, "Window", strlen("Window"), newSViv( (IV) win ), 0);
hv_store(RETVAL, "Context", strlen("Context"), newSViv(PTR2IV(ctx)), 0);
hv_store(RETVAL, "GL_Version",strlen("GL_Version"),
newSVpv((char *) glGetString(GL_VERSION),0),0);
hv_store(RETVAL, "GL_Vendor",strlen("GL_Vendor"),
newSVpv((char *) glGetString(GL_VENDOR),0),0);
hv_store(RETVAL, "GL_Renderer",strlen("GL_Renderer"),
newSVpv((char *) glGetString(GL_RENDERER),0),0);
/* clear the buffer */
glClearColor(0,0,0,1);
while ( (err = glGetError()) != GL_NO_ERROR ) {
printf("ERROR issued in GL %s\n", gluErrorString(err));
}
}
OUTPUT:
RETVAL
#// glpRasterFont(name,base,number,d)
int
glpRasterFont(name,base,number,d)
char *name
int base
int number
Display *d
CODE:
{
XFontStruct *fi;
int lb;
fi = XLoadQueryFont(d,name);
if(fi == NULL) {
die("No font %s found",name);
}
lb = glGenLists(number);
if(lb == 0) {
die("No display lists left for font %s (need %d)",name,number);
}
glXUseXFont(fi->fid, base, number, lb);
RETVAL=lb;
}
OUTPUT:
RETVAL
#// glpPrintString(base,str);
void
glpPrintString(base,str)
int base
char *str
CODE:
{
glPushAttrib(GL_LIST_BIT);
glListBase(base);
glCallLists(strlen(str),GL_UNSIGNED_BYTE,(GLubyte*)str);
glPopAttrib();
}
#// glpDisplay();
Display *
glpDisplay(name)
char *name
CODE:
/* get a connection */
if (!dpy_open) {
dpy = XOpenDisplay(name);
dpy_open = 1;
}
if (!dpy)
croak("No display!");
RETVAL = dpy;
OUTPUT:
RETVAL
#// glpMoveResizeWindow($x, $y, $width, $height[, $winID[, $display]]);
void
glpMoveResizeWindow(x, y, width, height, w=win, d=dpy)
void* d
GLXDrawable w
int x
int y
unsigned int width
unsigned int height
#// glpMoveWindow($x, $y[, $winID[, $display]]);
void
glpMoveWindow(x, y, w=win, d=dpy)
void* d
GLXDrawable w
int x
int y
#// glpResizeWindow($width, $height[, $winID[, $display]])
void
glpResizeWindow(width, height, w=win, d=dpy)
void* d
GLXDrawable w
unsigned int width
unsigned int height
# If glpOpenWindow was used then glXSwapBuffers should be called
# without parameters (i.e. use the default parameters)
#// glXSwapBuffers([$winID[, $display]])
void
glXSwapBuffers(w=win,d=dpy)
void * d
GLXDrawable w
CODE:
{
glXSwapBuffers(d,w);
}
#// XPending([$display]);
int
XPending(d=dpy)
void * d
CODE:
{
RETVAL = XPending(d);
}
OUTPUT:
RETVAL
#// glpXNextEvent([$display]);
void
glpXNextEvent(d=dpy)
void * d
PPCODE:
{
XEvent event;
char buf[10];
KeySym ks;
XNextEvent(d,&event);
switch(event.type) {
case ConfigureNotify:
EXTEND(sp,3);
PUSHs(sv_2mortal(newSViv(event.type)));
PUSHs(sv_2mortal(newSViv(event.xconfigure.width)));
PUSHs(sv_2mortal(newSViv(event.xconfigure.height)));
break;
case KeyPress:
case KeyRelease:
EXTEND(sp,2);
PUSHs(sv_2mortal(newSViv(event.type)));
XLookupString(&event.xkey,buf,sizeof(buf),&ks,0);
buf[0]=(char)ks;buf[1]='\0';
PUSHs(sv_2mortal(newSVpv(buf,1)));
break;
case ButtonPress:
case ButtonRelease:
EXTEND(sp,7);
PUSHs(sv_2mortal(newSViv(event.type)));
PUSHs(sv_2mortal(newSViv(event.xbutton.button)));
PUSHs(sv_2mortal(newSViv(event.xbutton.x)));
PUSHs(sv_2mortal(newSViv(event.xbutton.y)));
PUSHs(sv_2mortal(newSViv(event.xbutton.x_root)));
PUSHs(sv_2mortal(newSViv(event.xbutton.y_root)));
PUSHs(sv_2mortal(newSViv(event.xbutton.state)));
break;
case MotionNotify:
EXTEND(sp,4);
PUSHs(sv_2mortal(newSViv(event.type)));
PUSHs(sv_2mortal(newSViv(event.xmotion.state)));
PUSHs(sv_2mortal(newSViv(event.xmotion.x)));
PUSHs(sv_2mortal(newSViv(event.xmotion.y)));
break;
case Expose:
default:
EXTEND(sp,1);
PUSHs(sv_2mortal(newSViv(event.type)));
break;
}
}
#// glpXQueryPointer([$winID[, $display]]);
void
glpXQueryPointer(w=win,d=dpy)
void * d
GLXDrawable w
PPCODE:
{
int x,y,rx,ry;
Window r,c;
unsigned int m;
XQueryPointer(d,w,&r,&c,&rx,&ry,&x,&y,&m);
EXTEND(sp,3);
PUSHs(sv_2mortal(newSViv(x)));
PUSHs(sv_2mortal(newSViv(y)));
PUSHs(sv_2mortal(newSViv(m)));
}
#endif /* defined HAVE_GLpc */
#// glpSetDebug(flag);
void
glpSetDebug(flag)
int flag
CODE:
{
debug = flag;
}
#//# glpReadTex($file);
void
glpReadTex(file)
char * file
CODE:
{
GLsizei w,h;
int d,i;
char buf[250];
unsigned char *image;
FILE *fp;
char *ret;
fp=fopen(file,"r");
if(!fp) croak("couldn't open file %s",file);
ret = fgets(buf,250,fp); /* P3 */
if (buf[0] != 'P' || buf[1] != '3')
croak("Format is not P3 in file %s",file);
ret = fgets(buf,250,fp);
while (buf[0] == '#' && fgets(buf,250,fp)); /* Empty */
if (2 != sscanf(buf,"%d%d",&w,&h))
croak("couldn't read image size from file %s",file);
if (1 != fscanf(fp,"%d",&d))
croak("couldn't read image depth from file %s",file);
if(d != 255)
croak("image depth != 255 in file %s unsupported",file);
if(w>10000 || h>10000)
croak("suspicious size w=%d d=%d in file %s", w, d, file);
New(1431, image, w*h*3, unsigned char);
for(i=0;i<w*h*3;i++) {
int v;
if (1 != fscanf(fp,"%d",&v)) {
Safefree(image);
croak("Error reading number #%d of %d from file %s", i, w*h*3,file);
}
image[i]=(unsigned char) v;
}
fclose(fp);
glTexImage2D(GL_TEXTURE_2D, 0, 3, w,h,
0, GL_RGB, GL_UNSIGNED_BYTE,image);
}
#//# glpHasGLUT();
int
glpHasGLUT()
CODE:
{
#if defined(HAVE_GLUT) || defined(HAVE_FREEGLUT)
RETVAL = 1;
#else
RETVAL = 0;
#endif /* defined HAVE_GLUT or HAVE_FREEGLUT */
}
OUTPUT:
RETVAL
#//# glpHasGPGPU();
int
glpHasGPGPU()
CODE:
RETVAL = gpgpu_size();
OUTPUT:
RETVAL
#endif /* End IN_POGL_GLX_XS */