[GEM-cvs] SF.net SVN: pd-gem:[2803] trunk/Gem/src
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[GEM-cvs] SF.net SVN: pd-gem:[2803] trunk/Gem/src
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From: <zmo...@us...> - 2009-05-23 12:05:02
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Revision: 2803
http://pd-gem.svn.sourceforge.net/pd-gem/?rev=2803&view=rev
Author: zmoelnig
Date: 2009-05-23 12:04:54 +0000 (Sat, 23 May 2009)
Log Message:
-----------
derived [gemglutwindow] from a very simple GemContext class which will hopefully handle glewcontext switches
Modified Paths:
--------------
trunk/Gem/src/Output/gemglutwindow.cpp
trunk/Gem/src/Output/gemglutwindow.h
Added Paths:
-----------
trunk/Gem/src/Base/GemContext.cpp
trunk/Gem/src/Base/GemContext.h
Added: trunk/Gem/src/Base/GemContext.cpp
===================================================================
--- trunk/Gem/src/Base/GemContext.cpp (rev 0)
+++ trunk/Gem/src/Base/GemContext.cpp 2009-05-23 12:04:54 UTC (rev 2803)
@@ -0,0 +1,188 @@
+////////////////////////////////////////////////////////
+//
+// GEM - Graphics Environment for Multimedia
+//
+// zmo...@ie...
+//
+// Implementation file
+//
+// Copyright (c) 2009 IOhannes m zmoelnig. forum::f\xFCr::uml\xE4ute, iem @ kug
+//
+// For information on usage and redistribution, and for a DISCLAIMER OF ALL
+// WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+//
+/////////////////////////////////////////////////////////
+
+#include "GemContext.h"
+#include "GemMan.h"
+
+#ifdef GLEW_MX
+GLEWContext*s_glewcontext=NULL;
+#endif
+
+/////////////////////////////////////////////////////////
+//
+// GemContext
+//
+/////////////////////////////////////////////////////////
+// Constructor
+//
+/////////////////////////////////////////////////////////
+GemContext :: GemContext()
+ : m_width(0), m_height(0),
+ m_infoOut(NULL)
+#ifdef GLEW_MX
+ , m_context(NULL)
+#endif /* GLEW_MX */
+{
+ m_infoOut = outlet_new(this->x_obj, 0);
+}
+/////////////////////////////////////////////////////////
+// Destructor
+//
+/////////////////////////////////////////////////////////
+GemContext :: ~GemContext()
+{
+ outlet_free(m_infoOut); m_infoOut=NULL;
+ destroy();
+}
+
+void GemContext::info(t_symbol*s, int argc, t_atom*argv) {
+ if(m_infoOut) {
+ outlet_anything(m_infoOut, s, argc, argv);
+ }
+}
+void GemContext :: info(t_symbol*s, t_float value)
+{
+ t_atom atom;
+ SETFLOAT(&atom, value);
+ info(s, 1, &atom);
+}
+
+void GemContext :: bang(void)
+{
+ outlet_bang(m_infoOut);
+}
+
+
+
+
+/* mouse movement */
+void GemContext::motion(int x, int y)
+{
+ t_atom ap[3];
+ SETSYMBOL(ap+0, gensym("motion"));
+ SETFLOAT (ap+1, x);
+ SETFLOAT (ap+2, y);
+
+ info(gensym("mouse"), 3, ap);
+}
+/* mouse buttons */
+void GemContext::button(int id, int state)
+{
+ t_atom ap[3];
+ SETSYMBOL(ap+0, gensym("button"));
+ SETFLOAT (ap+1, id);
+ SETFLOAT (ap+2, state);
+
+ info(gensym("mouse"), 3, ap);
+}
+
+/* keyboard buttons */
+void GemContext::key(t_symbol*id, int state) {
+ t_atom ap[3];
+ SETSYMBOL(ap+0, gensym("key"));
+ SETSYMBOL(ap+1, id);
+ SETFLOAT (ap+2, state);
+
+ info(gensym("keyboard"), 3, ap);
+}
+
+bool GemContext::create(void){
+ bool ret=true;
+ static int firsttime=1;
+#ifdef GLEW_MX
+ m_context = new GLEWContext;
+ firsttime=1;
+#endif
+
+ if(firsttime) {
+ GLenum err = glewInit();
+
+ if (GLEW_OK != err) {
+ if(GLEW_ERROR_GLX_VERSION_11_ONLY == err) {
+ error("GEM: failed to init GLEW (glx): continuing anyhow - please report any problems to the gem-dev mailinglist!");
+ } else if (GLEW_ERROR_GL_VERSION_10_ONLY) {
+ error("GEM: failed to init GLEW: your system only supports openGL-1.0");
+ ret=false;
+ } else {
+ error("GEM: failed to init GLEW");
+ ret=false;
+ }
+ }
+ }
+ post("GLEW version %s",glewGetString(GLEW_VERSION));
+
+ /* check the stack-sizes */
+ glGetIntegerv(GL_MAX_MODELVIEW_STACK_DEPTH, m_maxStackDepth+0);
+ glGetIntegerv(GL_MAX_COLOR_MATRIX_STACK_DEPTH, m_maxStackDepth+1);
+ glGetIntegerv(GL_MAX_TEXTURE_STACK_DEPTH, m_maxStackDepth+2);
+ glGetIntegerv(GL_MAX_PROJECTION_STACK_DEPTH, m_maxStackDepth+3);
+
+ firsttime=0;
+ return true;
+}
+
+
+void GemContext::destroy(void){
+#ifdef GLEW_MX
+ if(m_context) {
+ if(m_context==s_glewcontext) {
+ s_glewcontext=NULL;
+ }
+ delete m_context;
+ }
+ m_context=NULL;
+#endif
+}
+
+bool GemContext::makeCurrent(void){
+ GemMan::maxStackDepth[0]=m_maxStackDepth[0];
+ GemMan::maxStackDepth[1]=m_maxStackDepth[1];
+ GemMan::maxStackDepth[2]=m_maxStackDepth[2];
+ GemMan::maxStackDepth[3]=m_maxStackDepth[3];
+
+#ifdef GLEW_MX
+ if(!m_context) {
+ return false;
+ /* alternatively we could create a context on the fly... */
+ }
+ s_glewcontext=m_context;
+#endif
+ return true;
+
+}
+
+
+void GemContext::dimensionsMess(void){
+ t_atom ap[2];
+ SETFLOAT (ap+0, m_width);
+ SETFLOAT (ap+1, m_height);
+
+ info(gensym("dimen"), 2, ap);
+}
+
+
+
+#ifdef GLEW_MX
+GLEWContext*glewGetContext(void) {
+ if(NULL==s_glewcontext) {
+ /* we should find another glew-context asap and make that one current! */
+ return NULL;
+ } else {
+ return s_glewcontext;
+ }
+
+ return NULL;
+}
+#endif
Added: trunk/Gem/src/Base/GemContext.h
===================================================================
--- trunk/Gem/src/Base/GemContext.h (rev 0)
+++ trunk/Gem/src/Base/GemContext.h 2009-05-23 12:04:54 UTC (rev 2803)
@@ -0,0 +1,103 @@
+/*-----------------------------------------------------------------
+LOG
+ GEM - Graphics Environment for Multimedia
+
+ a rendering context
+
+ Copyright (c) 2009 IOhannes m zmoelnig. forum::f\xFCr::uml\xE4ute. IEM. zmo...@ie...
+ For information on usage and redistribution, and for a DISCLAIMER OF ALL
+ WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMCACHE_H_
+#define INCLUDE_GEMCACHE_H_
+
+#include "Base/GemGL.h"
+#include "Base/CPPExtern.h"
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+ GemContext
+
+ The cache to pass among GEM objects
+
+DESCRIPTION
+
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemContext : public CPPExtern
+{
+ public:
+
+ //////////
+ // Constructor
+ GemContext(void);
+
+ //////////
+ // Destructor
+ ~GemContext(void);
+
+
+ protected:
+ /* an outlet to propagate information to the patch... mainly callbacks from the context */
+ /* LATER think about detaching theoutput from the stack, so we can e.g. destroy a window from a mouse-callback */
+ void info(t_symbol*s, int, t_atom*);
+ void info(t_symbol*s, t_float);
+
+ void bang(void);
+
+ /* mouse movement */
+ void motion(int x, int y);
+ /* mouse buttons */
+ void button(int id, int state);
+ /* keyboard buttons */
+ void key(t_symbol*id, int state);
+
+
+ /* create a new context
+ * make sure that this is called by the children's override functions as well,
+ * a it will eventually establish a new glew-context
+ * if <tt>false</tt> is returned, you should not continue!
+ */
+ virtual bool create(void);
+
+ /* destroy an established context */
+ virtual void destroy(void);
+
+ /* make the object's context (window,...) the current context
+ * this is virtual, so objects can add their own code
+ * note however, that they should also call this (parent's) function within
+ *
+ * is <tt>false</tt> is returned, do not attempt to use it (e.g. draw into it)
+ */
+ virtual bool makeCurrent(void);
+
+
+ /* set/get the dimension of the context
+ * setting is done by supplying arguments to the method;
+ * querying is done by supplying NO arguments
+ * this should be kept throughout
+ */
+ virtual void dimensionsMess(int width, int height) = 0;
+ virtual void dimensionsMess(void);
+ int m_width, m_height;
+
+ private:
+ t_outlet*m_infoOut;
+
+#ifdef GLEW_MX
+ GLEWContext*m_context;
+#endif
+
+ GLint m_maxStackDepth[4];
+};
+
+#ifdef GLEW_MX
+/* returns the last GemContext that called makeCurrent()
+ * LATER: what to do if this has been invalidated (e.g. because the context was destroyed) ?
+ */
+GEM_EXTERN GLEWContext*glewGetContext(void);
+#endif
+
+#endif // for header file
Modified: trunk/Gem/src/Output/gemglutwindow.cpp
===================================================================
--- trunk/Gem/src/Output/gemglutwindow.cpp 2009-05-23 11:41:42 UTC (rev 2802)
+++ trunk/Gem/src/Output/gemglutwindow.cpp 2009-05-23 12:04:54 UTC (rev 2803)
@@ -88,12 +88,11 @@
m_fsaa(0),
m_title((char*)"GEM"),
m_border(false),
- m_width(500), m_height(500),
+ // m_width(500), m_height(500),
m_fullscreen(false),
m_xoffset(-1), m_yoffset(-1),
m_cursor(false)
{
- m_infoOut = outlet_new(this->x_obj, 0);
}
/////////////////////////////////////////////////////////
@@ -103,16 +102,16 @@
gemglutwindow :: ~gemglutwindow()
{
destroyMess();
- outlet_free(m_infoOut); m_infoOut=NULL;
}
-bool gemglutwindow :: checkWindow(void){
+bool gemglutwindow :: makeCurrent(void){
if(m_window>0) {
glutSetWindow(m_window);
+ return GemContext::makeCurrent();
}
- return(m_window>0);
+ return(false);
}
@@ -122,7 +121,7 @@
/////////////////////////////////////////////////////////
void gemglutwindow :: bangMess()
{
- if(!checkWindow()){
+ if(!makeCurrent()){
error("no window made, cannot render!");
return;
}
@@ -136,59 +135,21 @@
/////////////////////////////////////////////////////////
void gemglutwindow :: renderMess()
{
- if(!checkWindow()){
+ if(!makeCurrent()){
error("no window made, cannot render!");
return;
}
glutPostRedisplay();
glutMainLoopEvent();
- if(checkWindow())
+ if(makeCurrent())
glutSwapBuffers();
}
void gemglutwindow :: doRender()
{
- outlet_bang(m_infoOut);
+ bang();
}
-void gemglutwindow :: info(t_symbol*s, t_float value)
-{
- t_atom atom;
- SETFLOAT(&atom, value);
- outlet_anything(m_infoOut, s, 1, &atom);
-}
-void gemglutwindow :: info(t_symbol*s, int argc, t_atom*argv)
-{
- outlet_anything(m_infoOut, s, argc, argv);
-}
-void gemglutwindow :: motion(int x, int y)
-{
- t_atom ap[3];
- SETSYMBOL(ap+0, gensym("motion"));
- SETFLOAT (ap+1, x);
- SETFLOAT (ap+2, y);
-
- info(gensym("mouse"), 3, ap);
-}
-void gemglutwindow :: button(int id, int state)
-{
- t_atom ap[3];
- SETSYMBOL(ap+0, gensym("button"));
- SETFLOAT (ap+1, id);
- SETFLOAT (ap+2, state);
-
- info(gensym("mouse"), 3, ap);
-}
-void gemglutwindow :: key(t_symbol*id, int state)
-{
- t_atom ap[3];
- SETSYMBOL(ap+0, gensym("key"));
- SETSYMBOL(ap+1, id);
- SETFLOAT (ap+2, state);
-
- info(gensym("keyboard"), 3, ap);
-}
-
/////////////////////////////////////////////////////////
// bufferMess
//
@@ -223,7 +184,7 @@
void gemglutwindow :: titleMess(t_symbol* s)
{
m_title = s->s_name;
- if(checkWindow()){
+ if(makeCurrent()){
glutSetWindowTitle(m_title);
glutSetIconTitle(m_title);
}
@@ -253,7 +214,7 @@
}
m_width = width;
m_height = height;
- if(checkWindow()){
+ if(makeCurrent()){
glutReshapeWindow(m_width, m_height);
}
}
@@ -264,7 +225,7 @@
void gemglutwindow :: fullscreenMess(bool on)
{
m_fullscreen = on;
- if(checkWindow()){
+ if(makeCurrent()){
if(m_fullscreen)
glutFullScreen();
else {
@@ -282,7 +243,7 @@
{
m_xoffset = x;
m_yoffset = y;
- if(checkWindow()){
+ if(makeCurrent()){
glutPositionWindow(x, y);
}
}
@@ -316,6 +277,11 @@
glutWindowStatusFunc(&gemglutwindow::windowstatusCb);
// glutNameFunc(&gemglutwindow::nameCb);
+
+
+ if(!create()) {
+ destroyMess();
+ }
}
/////////////////////////////////////////////////////////
// destroy window
@@ -323,11 +289,12 @@
/////////////////////////////////////////////////////////
void gemglutwindow :: destroyMess(void)
{
- if(checkWindow()) {
+ if(makeCurrent()) {
list_del(m_window);
glutDestroyWindow(m_window);
glutMainLoopEvent();
}
+ destroy();
m_window=0;
}
@@ -339,7 +306,7 @@
void gemglutwindow :: cursorMess(bool setting)
{
m_cursor=setting;
- if(checkWindow()){
+ if(makeCurrent()){
glutSetCursor(setting?GLUT_CURSOR_INHERIT:GLUT_CURSOR_NONE);
}
}
Modified: trunk/Gem/src/Output/gemglutwindow.h
===================================================================
--- trunk/Gem/src/Output/gemglutwindow.h 2009-05-23 11:41:42 UTC (rev 2802)
+++ trunk/Gem/src/Output/gemglutwindow.h 2009-05-23 12:04:54 UTC (rev 2803)
@@ -13,7 +13,7 @@
#ifndef INCLUDE_GEMGLUTWINDOW_H_
#define INCLUDE_GEMGLUTWINDOW_H_
-#include "Base/CPPExtern.h"
+#include "Base/GemContext.h"
/*-----------------------------------------------------------------
-------------------------------------------------------------------
@@ -51,9 +51,9 @@
-----------------------------------------------------------------*/
-class GEM_EXTERN gemglutwindow : public CPPExtern
+class GEM_EXTERN gemglutwindow : public GemContext
{
- CPPEXTERN_HEADER(gemglutwindow, CPPExtern)
+ CPPEXTERN_HEADER(gemglutwindow, GemContext)
public:
@@ -80,15 +80,6 @@
void doRender(void);
- /* info */
- void info(t_symbol*s, t_float value);
- void info(t_symbol*s, int, t_atom*);
-
- void motion(int x, int y);
- void button(int id, int state);
- void key(t_symbol*id, int state);
-
-
/* rendering */
void bangMess(void);
void renderMess(void);
@@ -106,8 +97,7 @@
bool m_border;
/* window position/dimension (pre creation) */
- void dimensionsMess(int width, int height);
- unsigned int m_width, m_height;
+ virtual void dimensionsMess(int width, int height);
void fullscreenMess(bool on);
bool m_fullscreen;
void offsetMess(int x, int y);
@@ -123,10 +113,8 @@
// check whether we have a window and if so, make it current
- bool checkWindow(void);
+ virtual bool makeCurrent(void);
- /* an outlet to send info to the patch */
- t_outlet *m_infoOut;
private:
/* the GLUT window id */
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