Split opengl functionality into separate dynamic library

The idea is to build a separate opengl library which can be reused
by other erlang applications.

5 files changed, 102 insertions, 65 deletions

diff --git a/lib/wx/api_gen/gl_gen_c.erl b/lib/wx/api_gen/gl_gen_c.erl
index 3293050ab9..99dd2e58ea 100644
--- a/lib/wx/api_gen/gl_gen_c.erl
+++ b/lib/wx/api_gen/gl_gen_c.erl
@@ -47,30 +47,16 @@ gen(GLFuncs, GLUFuncs) ->
     w("/***** This file is generated do not edit ****/~n~n", []),
     w("#include <stdio.h>~n", []),
     w("#include <string.h>~n", []),    
-    w("#include \"../wxe_impl.h\"~n", []),
-    w("#include \"../wxe_gl.h\"~n", []),
+    w("#include \"../egl_impl.h\"~n", []),
     w("#include \"gl_fdefs.h\"~n", []),
 
     w("~nint gl_error_op;~n", []),
-    w("void gl_dispatch(int op, char *bp,ErlDrvTermData caller,WXEBinRef *bins[]){~n",
+    w("void egl_dispatch(int op, char *bp, ErlDrvPort port, ErlDrvTermData caller, char *bins[]){~n",
       []),
     w(" gl_error_op = op;~n", []),
-    w(" if(caller != gl_active) {~n", []),
-    w("   wxGLCanvas * current = glc[caller];~n", []),
-    w("   if(current) { gl_active = caller; current->SetCurrent();}~n", []),
-    w("   else {~n "
-      "      ErlDrvTermData rt[] = // Error msg~n"
-      "      {ERL_DRV_ATOM, driver_mk_atom((char *) \"_wxe_error_\"),~n"
-      "       ERL_DRV_INT,  op,~n" 
-      "       ERL_DRV_ATOM, driver_mk_atom((char *) \"no_gl_context\"),~n"
-      "       ERL_DRV_TUPLE,3};~n"
-      "      driver_send_term(WXE_DRV_PORT,caller,rt,8);~n"
-      "      return ;~n   }~n };~n~n", []),
 
     w(" switch(op)~n{~n",[]),
-    w(" case 5000:~n   wxe_tess_impl(bp, caller);~n   break;~n", []),
-    w(" case WXE_BIN_INCR:~n   driver_binary_inc_refc(bins[0]->bin);~n   break;~n",[]),
-    w(" case WXE_BIN_DECR:~n   driver_binary_dec_refc(bins[0]->bin);~n   break;~n",[]),
+    w(" case 5000:~n   erl_tess_impl(bp, port, caller);~n   break;~n", []),
 
     [funcs(F) || F <- GLUFuncs],
     [funcs(F) || F <- GLFuncs],
@@ -171,10 +157,10 @@ decode_arg(P=#arg{where=c},A)   -> {P,A};
 decode_arg(P=#arg{in=false},A)  -> {P,A};
 
 decode_arg(P=#arg{name=Name,type=#type{name=Type,base=binary}},A0) ->
-    w(" ~s *~s = (~s *) bins[~p]->base;~n", [Type,Name,Type,next_id(bin_count)]),
+    w(" ~s *~s = (~s *) bins[~p];~n", [Type,Name,Type,next_id(bin_count)]),
     {P, A0};
 decode_arg(P=#arg{name=Name,type=#type{name=Type,base=memory}},A0) ->
-    w(" ~s *~s = (~s *) bins[~p]->base;~n", [Type,Name,Type,next_id(bin_count)]),
+    w(" ~s *~s = (~s *) bins[~p];~n", [Type,Name,Type,next_id(bin_count)]),
     {P, A0};
 decode_arg(P=#arg{name=Name,type=#type{name=T,base=string,single=list}},A0) ->
     A = align(4,A0),
@@ -322,7 +308,7 @@ build_return_vals(Type,As) ->
 		    w(" rt[AP++]=ERL_DRV_ATOM;"
 		      " rt[AP++]=driver_mk_atom((char *) \"ok\");~n",[]),
 		    w(" rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = 2;~n",[]),
-		    w(" driver_send_term(WXE_DRV_PORT,caller,rt,AP);~n",[]),
+		    w(" driver_send_term(port,caller,rt,AP);~n",[]),
 		    ok
 	    end;
 	{Val,Vars,Cnt} ->
@@ -348,7 +334,7 @@ build_return_vals(Type,As) ->
 	    w(" rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = 2;~n",[]),
 	    w(" if (AP != ~s )  fprintf(stderr, \"%d: ERROR AP mismatch %d %d\\r\\n\",__LINE__,AP,~s);~n",
 	      [CSize,CSize]),
-	    w(" driver_send_term(WXE_DRV_PORT,caller,rt,AP);~n",[]),
+	    w(" driver_send_term(port,caller,rt,AP);~n",[]),
 	    case Vars of 
 		none -> ignore;
 		_ -> 		    
diff --git a/lib/wx/api_gen/gl_gen_erl.erl b/lib/wx/api_gen/gl_gen_erl.erl
index ce35484561..36a6ea2373 100644
--- a/lib/wx/api_gen/gl_gen_erl.erl
+++ b/lib/wx/api_gen/gl_gen_erl.erl
@@ -49,7 +49,7 @@ glu_defines(Defs) ->
     w("~n%% GLU DEFINITIONS~n~n", []),
     w("%% This file is generated DO NOT EDIT~n~n", []),
     [gen_define(Def) || Def=#def{} <- Defs],
-    close(), 
+    close(),
     ok.   
 
 gen_define(#def{name=N, val=Val, type=int}) ->
@@ -90,22 +90,51 @@ gl_api(Fs) ->
     w("%% See <a href=\"http://www.opengl.org/sdk/docs/man/\">www.opengl.org</a>~n",[]),
     w("%%~n", []),
     w("%% Booleans are represented by integers 0 and 1.~n~n", []),
-    w("%% @type wx_mem(). see wx.erl on memory allocation functions~n", []),
+    w("%% @type mem().    memory block~n", []),
     w("%% @type enum().   An integer defined in gl.hrl~n", []),    
     w("%% @type offset(). An integer which is an offset in an array~n", []),
     w("%% @type clamp().  A float clamped between 0.0 - 1.0~n", []),
     
     w("-module(gl).~n~n",[]),    
     w("-compile(inline).~n", []),
-    %%    w("-compile(export_all).~n~n", []),
-    %%    w("-compile(binary_comprehension).~n~n", []),
-    w("-include(\"wxe.hrl\").~n", []),
+%%    w("-include(\"wxe.hrl\").~n", []),
     [w("-define(~s,~s).~n", [GL,Erl]) || {GL,Erl} <- types()],
     
     Exp = fun(F) -> gen_export(F) end,
     ExportList = lists:map(Exp,Fs),
     w("~n-export([~s]).~n~n", [args(fun(EF) -> EF end, ",", ExportList, 60)]),
-
+    w("-export([call/2, cast/2, send_bin/1]).~n",[]),
+    w("%% @hidden~n", []),
+    w("call(Op, Args) ->~n", []),
+    w("    Port = get(opengl_port), ~n", []),
+    w("    _ = erlang:port_control(Port,Op,Args),~n", []),
+    w("    rec().~n", []),
+    w("    ~n", []),
+    w("%% @hidden~n", []),
+    w("cast(Op, Args) ->~n", []),
+    w("    Port = get(opengl_port), ~n", []),
+    w("    _ = erlang:port_control(Port,Op,Args),~n", []),
+    w("    ok.~n", []),
+    w("    ~n", []),
+    w("%% @hidden~n", []),
+    w("rec() ->~n", []),
+    w("    receive ~n", []),
+    w("        {'_egl_result_', Res} -> Res;~n", []),
+    w("        {'_egl_error_',  Res} -> error({error,Res})~n", []),
+    w("    end.~n", []),
+    w("~n", []),
+    w("%% @hidden~n", []),
+    w("send_bin(Bin) when is_binary(Bin) ->~n", []),
+    w("    Port = get(opengl_port), ~n", []),
+    w("    erlang:port_command(Port,Bin);~n", []),
+    w("send_bin(Tuple) when is_tuple(Tuple) ->~n", []),
+    w("    Port = get(opengl_port), ~n", []),
+    w("    case element(2, Tuple) of~n", []),
+    w("        Bin when is_binary(Bin) ->~n", []),
+    w("            erlang:port_command(Port,Bin)~n", []),
+    w("    end.~n", []),
+    w("~n", []),
+    
     w("~n%% API~n~n", []),
     [gen_funcs(F) || F <- Fs],
     close(), 
@@ -120,20 +149,20 @@ glu_api(Fs) ->
     w("%% See <a href=\"http://www.opengl.org/sdk/docs/man/\">www.opengl.org</a>~n",[]),
     w("%%~n", []),
     w("%% Booleans are represented by integers 0 and 1.~n~n", []),
-    w("%% @type wx_mem(). see wx.erl on memory allocation functions~n", []),
+    w("%% @type mem().    memory block~n", []),
     w("%% @type enum().   An integer defined in gl.hrl~n", []),    
     w("%% @type offset(). An integer which is an offset in an array~n", []),
     w("%% @type clamp().  A float clamped between 0.0 - 1.0~n~n", []),
 
     w("-module(glu).~n",[]),    
     w("-compile(inline).~n", []),
-    w("-include(\"wxe.hrl\").~n", []),
+    %%w("-include(\"wxe.hrl\").~n", []),
     [w("-define(~s,~s).~n", [GL,Erl]) || {GL,Erl} <- types()],
 
     Exp = fun(F) -> gen_export(F) end,
     ExportList = ["tesselate/2" | lists:map(Exp,Fs)],
     w("~n-export([~s]).~n~n", [args(fun(EF) -> EF end, ",", ExportList, 60)]),
-
+    w("-import(gl, [call/2,cast/2,send_bin/1]).", []),
     w("~n%% API~n~n", []),
 
     w("%% @spec (Vec3, [Vec3]) -> {Triangles, VertexPos}~n",[]),
@@ -148,13 +177,13 @@ glu_api(Fs) ->
       "%% may contain newly created vertices in the end.~n", []),
 
     w("tesselate({Nx,Ny,Nz}, Vs) ->~n",[]),
-    w("  wxe_util:call(5000, <<(length(Vs)):32/native,0:32,~n"
+    w("  call(5000, <<(length(Vs)):32/native,0:32,~n"
       "    Nx:?GLdouble,Ny:?GLdouble,Nz:?GLdouble,~n"
       "    (<< <<Vx:?GLdouble,Vy:?GLdouble,Vz:?GLdouble >>~n"
       "        || {Vx,Vy,Vz} <- Vs>>)/binary >>).~n~n", []),
 
     [gen_funcs(F) || F <- Fs],
-    close(), 
+    close(),
     ok.
 
 gen_funcs([F]) when is_list(F) ->
@@ -229,9 +258,9 @@ gen_func(_F=#func{name=Name,type=T,params=As,id=MId}) ->
     {StrArgs,_} = marshal_args(PreAs),
     case have_return_vals(T,As) of
 	true ->
-	    w("  wxe_util:call(~p, <<~s>>)", [MId, StrArgs]);
+	    w("  call(~p, <<~s>>)", [MId, StrArgs]);
 	false ->
-	    w("  wxe_util:cast(~p, <<~s>>)", [MId, StrArgs])
+	    w("  cast(~p, <<~s>>)", [MId, StrArgs])
     end.
 
 func_arg(#arg{in=In,where=W,name=Name,type=Type}) 
@@ -302,7 +331,7 @@ doc_arg_type3(#type{base=guard_int}) -> "offset()|binary()";
 doc_arg_type3(#type{base=string}) ->    "string()";
 doc_arg_type3(#type{base=bool}) ->      "0|1";
 doc_arg_type3(#type{base=binary}) ->    "binary()";
-doc_arg_type3(#type{base=memory}) ->    "wx:wx_mem()".
+doc_arg_type3(#type{base=memory}) ->    "mem()".
 
 guard_test(As) -> 
     Str = args(fun(#arg{name=N,type=#type{base=guard_int}}) -> 
@@ -316,10 +345,10 @@ guard_test(As) ->
     end.	    
 
 pre_marshal([#arg{name=N,in=true,type=#type{base=binary}}|R]) -> 
-    w("  wxe_util:send_bin(~s),~n", [erl_arg_name(N)]),
+    w("  send_bin(~s),~n", [erl_arg_name(N)]),
     pre_marshal(R);
 pre_marshal([#arg{name=N,type=#type{base=memory}}|R]) -> 
-    w("  wxe_util:send_bin(~s#wx_mem.bin),~n", [erl_arg_name(N)]),
+    w("  send_bin(~s),~n", [erl_arg_name(N)]),
     pre_marshal(R);
 pre_marshal([A=#arg{name=N,type=#type{base=string,single=list}}|R]) ->
     %% With null terminations
diff --git a/lib/wx/api_gen/wx_gen_cpp.erl b/lib/wx/api_gen/wx_gen_cpp.erl
index 846cec46c4..4bcdbe6a68 100644
--- a/lib/wx/api_gen/wx_gen_cpp.erl
+++ b/lib/wx/api_gen/wx_gen_cpp.erl
@@ -152,6 +152,7 @@ gen_funcs(Defs) ->
     w("#include \"../wxe_impl.h\"~n"),
     w("#include \"../wxe_events.h\"~n"),
     w("#include \"../wxe_return.h\"~n"),
+    w("#include \"../wxe_gl.h\"~n"),
     w("#include \"wxe_macros.h\"~n"),
     w("#include \"wxe_derived_dest.h\"~n~n"),
 
@@ -176,6 +177,9 @@ gen_funcs(Defs) ->
       "     rt.addAtom(\"ok\");~n"
       "     break;~n"
       " }~n"),
+    w(" case WXE_BIN_INCR:~n   driver_binary_inc_refc(Ecmd.bin[0]->bin);~n   break;~n",[]),
+    w(" case WXE_BIN_DECR:~n   driver_binary_dec_refc(Ecmd.bin[0]->bin);~n   break;~n",[]),
+    w(" case WXE_INIT_OPENGL:~n  wxe_initOpenGL(rt, bp);~n   break;~n",[]),
 
     Res = [gen_class(Class) || Class <- Defs],
 
@@ -266,13 +270,13 @@ gen_method(CName,  M=#method{name=N,params=Ps0,type=T,method_type=MT,id=MethodId
 		   Def =/= none, In =/= false, Where =/= c],
     decode_options(Opts, Align),
     case M#method.pre_hook of
-	undefined -> skip;
-	Pre -> w(" ~s;~n", [Pre])
+	{c,Pre} -> w(" ~s;~n", [Pre]);
+	_ -> skip
     end,
     Ps3 = call_wx(N,{MT,CName},T,Ps2),
     case M#method.post_hook of
-	undefined -> skip;
-	Post -> w(" ~s;~n", [Post])
+	{c, Post} -> w(" ~s;~n", [Post]);
+	_ -> skip
     end,
     free_args(),
     build_return_vals(T,Ps3),
diff --git a/lib/wx/api_gen/wx_gen_erl.erl b/lib/wx/api_gen/wx_gen_erl.erl
index 7962dd9fbf..8648174b5b 100644
--- a/lib/wx/api_gen/wx_gen_erl.erl
+++ b/lib/wx/api_gen/wx_gen_erl.erl
@@ -270,6 +270,16 @@ gen_method2(M=#method{name=N,alias=A,params=Ps,type=T,method_type=MT,id=MethodId
     MId = arg_type_tests(Args, "?" ++ get_unique_name(MethodId)),
     {MArgs,Align} = marshal_args(Args),
     MOpts = marshal_opts(Optional, Align, Args),
+    case M#method.pre_hook of
+	{erl,Pre} -> w("  ~s~n", [Pre]);
+	_ -> skip
+    end,
+
+    case M#method.post_hook of
+	{erl,_} -> w("  _Result = ~n", []);
+	_ -> skip
+    end,
+    
     case have_return_vals(T, Ps) of
 	_ when MT =:= constructor ->
 	    w("  wxe_util:construct(~s,~n  <<~s~s>>)", [MId, MArgs,MOpts]);
@@ -278,6 +288,13 @@ gen_method2(M=#method{name=N,alias=A,params=Ps,type=T,method_type=MT,id=MethodId
 	false -> 
 	    w("  wxe_util:cast(~s,~n  <<~s~s>>)", [MId, MArgs,MOpts])
     end,
+    case M#method.post_hook of
+	{erl,Post} -> 
+	    w("  ~s~n", [Post]),
+	    w("  _Result~n", []);
+	_ -> skip
+    end,
+   
     erase(current_func),
     M.
 
diff --git a/lib/wx/api_gen/wxapi.conf b/lib/wx/api_gen/wxapi.conf
index 6bafda5b9d..14f5f7e267 100644
--- a/lib/wx/api_gen/wxapi.conf
+++ b/lib/wx/api_gen/wxapi.conf
@@ -505,15 +505,15 @@
 	      {"data",[in,{base,binary}]},
 	      {"alpha",[in,{base,binary}]},
 	      {{4,pre_hook}, 
-	       "if(!static_data) {"
-	       "data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
-	       "memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"},
+	       {c, "if(!static_data) {"
+		"data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
+		"memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"}},
 	      {{5,pre_hook}, 
-	       "if(!static_data) {"
-	       " data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
-	       " alpha = (unsigned char *) malloc(Ecmd.bin[1]->size);"
-	       " memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);"
-	       " memcpy(alpha,Ecmd.bin[1]->base,Ecmd.bin[1]->size);}"}
+	       {c, "if(!static_data) {"
+		" data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
+		" alpha = (unsigned char *) malloc(Ecmd.bin[1]->size);"
+		" memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);"
+		" memcpy(alpha,Ecmd.bin[1]->base,Ecmd.bin[1]->size);}"}}
 	     ]},
   '~wxImage',%'AddHandler',
   'Blur','BlurHorizontal','BlurVertical', 
@@ -524,15 +524,15 @@
 	     {"data",[in,{base,binary}]},
 	     {"alpha",[in,{base,binary}]},
 	     {{4,pre_hook}, 
-	      "if(!static_data) {"
-	      "data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
-	      "memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"},
+	      {c, "if(!static_data) {"
+	       "data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
+	       "memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"}},
 	     {{5,pre_hook}, 
-	      "if(!static_data) {"
-	      " data =  (unsigned char *) malloc(Ecmd.bin[0]->size);"
-	      " alpha = (unsigned char *) malloc(Ecmd.bin[1]->size);"
-	      " memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);"
-	      " memcpy(alpha,Ecmd.bin[1]->base,Ecmd.bin[1]->size);}"}	     
+	      {c, "if(!static_data) {"
+	       " data =  (unsigned char *) malloc(Ecmd.bin[0]->size);"
+	       " alpha = (unsigned char *) malloc(Ecmd.bin[1]->size);"
+	       " memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);"
+	       " memcpy(alpha,Ecmd.bin[1]->base,Ecmd.bin[1]->size);}"}}	     
 	    ]},
   'Destroy','FindFirstUnusedColour', %  'FindHandler',
   'GetImageExtWildcard',
@@ -551,15 +551,15 @@
   'Rotate90','SaveFile','Scale','Size',
   {'SetAlpha', [{{2,"alpha"},[in,{base,binary}, {def, none}]},
 		{{2,pre_hook}, 
-		 "if(!static_data) {"
-		 "alpha = (unsigned char *) malloc(Ecmd.bin[0]->size);"
-		 "memcpy(alpha,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"}
+		 {c, "if(!static_data) {"
+		  "alpha = (unsigned char *) malloc(Ecmd.bin[0]->size);"
+		  "memcpy(alpha,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"}}
 	       ]},
   {'SetData',  [{"data",[in,{base,binary}]},
 		{pre_hook, 
-		 "if(!static_data) {"
-		 "data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
-		 "memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"}
+		 {c, "if(!static_data) {"
+		  "data = (unsigned char *) malloc(Ecmd.bin[0]->size);"
+		  "memcpy(data,Ecmd.bin[0]->base,Ecmd.bin[0]->size);}"}}
 	       ]},
  'SetMask','SetMaskColour','SetMaskFromImage','SetOption',
   'SetPalette',
@@ -1146,9 +1146,10 @@
 
 {class, wxGLCanvas, wxWindow, 
  [{skip, [{'SetCurrent', 2}]}], %% NA MAC
- [{'wxGLCanvas', [{"attribList", [in, {single,array}]}]},
+ [{'wxGLCanvas', [{"attribList", [in, {single,array}]},
+		  {pre_hook, {erl, "wxe_master:init_opengl(),"}}]},
   'GetContext',
-  {'SetCurrent', [{post_hook,"if(This->GetContext()) setActiveGL(Ecmd.caller,This)"}]},
+  {'SetCurrent', [{post_hook,{c, "if(This->GetContext()) setActiveGL(Ecmd.caller,This)"}}]},
   %%{'SetColour', [{"colour", [in, {single,array}]}]},
   'SwapBuffers']}.