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Diffstat (limited to 'lib/wx/c_src/egl_impl.cpp')
| -rw-r--r-- | lib/wx/c_src/egl_impl.cpp | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/lib/wx/c_src/egl_impl.cpp b/lib/wx/c_src/egl_impl.cpp new file mode 100644 index 0000000000..e2dbbb73c4 --- /dev/null +++ b/lib/wx/c_src/egl_impl.cpp @@ -0,0 +1,306 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2010. All Rights Reserved. + * + * The contents of this file are subject to the Erlang Public License, + * Version 1.1, (the "License"); you may not use this file except in + * compliance with the License. You should have received a copy of the + * Erlang Public License along with this software. If not, it can be + * retrieved online at http://www.erlang.org/. + * + * Software distributed under the License is distributed on an "AS IS" + * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + * the License for the specific language governing rights and limitations + * under the License. + * + * %CopyrightEnd% + */ + +#include <stdio.h> +#include <string.h> + +#ifdef _WIN32 +#include <windows.h> +#endif + +#include "egl_impl.h" + +#define WX_DEF_EXTS +#include "gen/gl_fdefs.h" +#include "gen/gl_finit.h" +#include "gen/glu_finit.h" + +void init_tess(); +void exit_tess(); +int load_gl_functions(); + +/* **************************************************************************** + * OPENGL INITIALIZATION + *****************************************************************************/ + +int egl_initiated = 0; + +#ifdef _WIN32 +#define RTLD_LAZY 0 +#define OPENGL_LIB L"opengl32.dll" +#define OPENGLU_LIB L"glu32.dll" +typedef HMODULE DL_LIB_P; +typedef WCHAR DL_CHAR; +void * dlsym(HMODULE Lib, const char *func) { + void * funcp; + if((funcp = (void *) GetProcAddress(Lib, func))) + return funcp; + else + return (void *) wglGetProcAddress(func); +} + +HMODULE dlopen(const WCHAR *DLL, int unused) { + return LoadLibrary(DLL); +} + +void dlclose(HMODULE Lib) { + FreeLibrary(Lib); +} + +#else +typedef void * DL_LIB_P; +typedef char DL_CHAR; +# ifdef _MACOSX +# define OPENGL_LIB "/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib" +# define OPENGLU_LIB "/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib" +# else +# define OPENGL_LIB "libGL.so" +# define OPENGLU_LIB "libGLU.so" +# endif +#endif +extern "C" { +DRIVER_INIT(EGL_DRIVER) { + return NULL; +} +} + +int egl_init_opengl(void *erlCallbacks) +{ +#ifdef _WIN32 + driver_init((TWinDynDriverCallbacks *) erlCallbacks); +#endif + if(egl_initiated == 0) { + if(load_gl_functions()) { + init_tess(); + egl_initiated = 1; + } + } + return 1; +} + +int load_gl_functions() { + DL_CHAR * DLName = OPENGL_LIB; + DL_LIB_P LIBhandle = dlopen(DLName, RTLD_LAZY); + //fprintf(stderr, "Loading GL: %s\r\n", (const char*)DLName); + void * func = NULL; + int i; + + if(LIBhandle) { + for(i=0; gl_fns[i].name != NULL; i++) { + if((func = dlsym(LIBhandle, gl_fns[i].name))) { + * (void **) (gl_fns[i].func) = func; + // fprintf(stderr, "GL LOADED %s \r\n", gl_fns[i].name); + } else { + if(gl_fns[i].alt != NULL) { + if((func = dlsym(LIBhandle, gl_fns[i].alt))) { + * (void **) (gl_fns[i].func) = func; + // fprintf(stderr, "GL LOADED %s \r\n", gl_fns[i].alt); + } else { + * (void **) (gl_fns[i].func) = (void *) &gl_error; + // fprintf(stderr, "GL Skipped %s and %s \r\n", gl_fns[i].name, gl_fns[i].alt); + }; + } else { + * (void **) (gl_fns[i].func) = (void *) &gl_error; + // fprintf(stderr, "GL Skipped %s \r\n", gl_fns[i].name); + } + } + } + dlclose(LIBhandle); + // fprintf(stderr, "OPENGL library is loaded\r\n"); + } else { + fprintf(stderr, "Could NOT load OpenGL library: %s\r\n", DLName); + }; + + DLName = OPENGLU_LIB; + LIBhandle = dlopen(DLName, RTLD_LAZY); + // fprintf(stderr, "Loading GLU: %s\r\n", (const char*)DLName); + func = NULL; + + if(LIBhandle) { + for(i=0; glu_fns[i].name != NULL; i++) { + if((func = dlsym(LIBhandle, glu_fns[i].name))) { + * (void **) (glu_fns[i].func) = func; + } else { + if(glu_fns[i].alt != NULL) { + if((func = dlsym(LIBhandle, glu_fns[i].alt))) { + * (void **) (glu_fns[i].func) = func; + } else { + * (void **) (glu_fns[i].func) = (void *) &gl_error; + // fprintf(stderr, "GLU Skipped %s\r\n", glu_fns[i].alt); + }; + } else { + * (void **) (glu_fns[i].func) = (void *) &gl_error; + // fprintf(stderr, "GLU Skipped %s\r\n", glu_fns[i].name); + } + } + } + dlclose(LIBhandle); + // fprintf(stderr, "GLU library is loaded\r\n"); + } else { + fprintf(stderr, "Could NOT load OpenGL GLU library: %s\r\n", DLName); + }; + + return 1; +} + +void gl_error() { + // fprintf(stderr, "OpenGL Extension not available \r\n"); + throw "undef_extension"; +} + +/* ******************************************************************************* + * GLU Tesselation special + * ******************************************************************************/ + +static GLUtesselator* tess; +static GLdouble* tess_coords; +static GLdouble* tess_alloc_vertex; +static int* tess_vertices; + +void CALLBACK +egl_ogla_vertex(GLdouble* coords) +{ + /* fprintf(stderr, "%d\r\n", (int) (coords - tess_coords) / 3); */ + + *tess_vertices++ = (int) (coords - tess_coords) / 3; +} + +void CALLBACK +egl_ogla_edge_flag(GLboolean flag) +{ +} + +void CALLBACK +egl_ogla_error(GLenum errorCode) +{ + const GLubyte *err; + err = gluErrorString(errorCode); + // wxString msg; + // msg.Printf(wxT("Tesselation error: %d: "), (int)errorCode); + // msg += wxString::FromAscii((char *) err); + // send_msg("error", &msg); + fprintf(stderr, "Tesselation error: %d\r\n", (int) errorCode); +} + +void CALLBACK +egl_ogla_combine(GLdouble coords[3], + void* vertex_data[4], + GLfloat w[4], + void **dataOut) +{ + GLdouble* vertex = tess_alloc_vertex; + + tess_alloc_vertex += 3; + +#if 0 + fprintf(stderr, "combine: "); + int i; + for (i = 0; i < 4; i++) { + if (w[i] > 0.0) { + fprintf(stderr, "%d(%g) ", (int) vertex_data[i], w[i]); + } + } + fprintf(stderr, "\r\n"); + fprintf(stderr, "%g %g %g\r\n", vertex[0], vertex[1], vertex[2]); +#endif + + vertex[0] = coords[0]; + vertex[1] = coords[1]; + vertex[2] = coords[2]; + *dataOut = vertex; +} + +void init_tess() +{ + tess = gluNewTess(); + + gluTessCallback(tess, GLU_TESS_VERTEX, (GLUfuncptr) egl_ogla_vertex); + gluTessCallback(tess, GLU_TESS_EDGE_FLAG, (GLUfuncptr) egl_ogla_edge_flag); + gluTessCallback(tess, GLU_TESS_COMBINE, (GLUfuncptr) egl_ogla_combine); + gluTessCallback(tess, GLU_TESS_ERROR, (GLUfuncptr) egl_ogla_error); + +} + +void exit_tess() +{ + gluDeleteTess(tess); +} + +int erl_tess_impl(char* buff, ErlDrvPort port, ErlDrvTermData caller) +{ + ErlDrvBinary* bin; + int i; + GLdouble* new_vertices; + int *vertices; + int num_vertices; + GLdouble *n; + int n_pos, AP, res; + + num_vertices = * (int *) buff; buff += 8; /* Align */ + n = (double *) buff; buff += 8*3; + + bin = driver_alloc_binary(num_vertices*6*sizeof(GLdouble)); + new_vertices = tess_coords = (double *) bin->orig_bytes; + memcpy(tess_coords,buff,num_vertices*3*sizeof(GLdouble)); + tess_alloc_vertex = tess_coords + num_vertices*3; + +#if 0 + fprintf(stderr, "n=%d\r\n", num_vertices); +#endif + vertices = (int *) driver_alloc(sizeof(int) * 16*num_vertices); + + tess_vertices = vertices; + + gluTessNormal(tess, n[0], n[1], n[2]); + gluTessBeginPolygon(tess, 0); + gluTessBeginContour(tess); + for (i = 0; i < num_vertices; i++) { + gluTessVertex(tess, tess_coords+3*i, tess_coords+3*i); + } + gluTessEndContour(tess); + gluTessEndPolygon(tess); + + n_pos = (tess_vertices - vertices); + + AP = 0; ErlDrvTermData *rt; + rt = (ErlDrvTermData *) driver_alloc(sizeof(ErlDrvTermData) * (13+n_pos*2)); + rt[AP++]=ERL_DRV_ATOM; rt[AP++]=driver_mk_atom((char *) "_egl_result_"); + + for(i=0; i < n_pos; i++) { + rt[AP++] = ERL_DRV_INT; rt[AP++] = (int) vertices[i]; + }; + rt[AP++] = ERL_DRV_NIL; rt[AP++] = ERL_DRV_LIST; rt[AP++] = n_pos+1; + + rt[AP++] = ERL_DRV_BINARY; rt[AP++] = (ErlDrvTermData) bin; + rt[AP++] = (tess_alloc_vertex-new_vertices)*sizeof(GLdouble); rt[AP++] = 0; + + rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = 2; // Return tuple {list, Bin} + rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = 2; // Result tuple + + res = driver_send_term(port,caller,rt,AP); + /* fprintf(stderr, "List %d: %d %d %d \r\n", */ + /* res, */ + /* n_pos, */ + /* (tess_alloc_vertex-new_vertices)*sizeof(GLdouble), */ + /* num_vertices*6*sizeof(GLdouble)); */ + driver_free_binary(bin); + driver_free(vertices); + driver_free(rt); + return 0; +} |