nkeynes@405: /**
nkeynes@561:  * $Id$
nkeynes@405:  *
nkeynes@1130:  * Tool to take an input .glsl file and write out a corresponding .c and .h
nkeynes@1130:  * file based on the content. The .glsl file contains a number of shaders
nkeynes@1130:  * marked with either #fragment <name> or #vertex <name>
nkeynes@1130:  * a C file with appropriate escaping, as well as program definitions
nkeynes@1130:  * written as #program <name> = <shader1> <shader2> ... <shaderN>
nkeynes@405:  *
nkeynes@1130:  * Copyright (c) 2007-2010 Nathan Keynes.
nkeynes@405:  *
nkeynes@405:  * This program is free software; you can redistribute it and/or modify
nkeynes@405:  * it under the terms of the GNU General Public License as published by
nkeynes@405:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@405:  * (at your option) any later version.
nkeynes@405:  *
nkeynes@405:  * This program is distributed in the hope that it will be useful,
nkeynes@405:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@405:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@405:  * GNU General Public License for more details.
nkeynes@405:  */
nkeynes@405: 
nkeynes@1130: #include <assert.h>
nkeynes@1207: #include <ctype.h>
nkeynes@1130: #include <errno.h>
nkeynes@405: #include <stdio.h>
nkeynes@405: #include <stdlib.h>
nkeynes@1130: #include <string.h>
nkeynes@1130: #include <glib/gstrfuncs.h>
nkeynes@1130: #include <glib/glist.h>
nkeynes@1130: 
nkeynes@1130: #define MAX_LINE 4096
nkeynes@1130: #define DEF_ALLOC_SIZE 4096
nkeynes@1130: #define MAX_SHADERS 128
nkeynes@1130: 
nkeynes@1130: typedef enum {
nkeynes@1130:     VERTEX_SHADER = 0,
nkeynes@1130:     FRAGMENT_SHADER = 1
nkeynes@1130: } shader_type_t;
nkeynes@1130: 
nkeynes@1207: typedef struct variable {
nkeynes@1207:     gboolean uniform; /* TRUE = uniform, FALSE = attribute */
nkeynes@1207:     const char *name;
nkeynes@1207:     const char *type;
nkeynes@1207: } *variable_t;
nkeynes@1207: 
nkeynes@1130: typedef struct shader {
nkeynes@1130:     shader_type_t type;
nkeynes@1130:     const char *name;
nkeynes@1130:     char *body;
nkeynes@1207:     GList *variables;
nkeynes@1130: } *shader_t;
nkeynes@1130: 
nkeynes@1130: typedef struct program {
nkeynes@1130:     const char *name;
nkeynes@1130:     gchar **shader_names;
nkeynes@1207:     GList *shaders;
nkeynes@1207:     GList *variables;
nkeynes@1130: } *program_t;
nkeynes@1130: 
nkeynes@1130: typedef struct glsldata {
nkeynes@1130:     const char *filename;
nkeynes@1130:     unsigned max_shaders;
nkeynes@1130:     GList *shaders;
nkeynes@1130:     GList *programs;
nkeynes@1130: } *glsldata_t;
nkeynes@1130: 
nkeynes@1207: #define isident(c) (isalnum(c)||(c)=='_')
nkeynes@1207: 
nkeynes@1207: static void parseVarDecl( shader_t shader, gboolean uniform, char *input )
nkeynes@1207: {
nkeynes@1207:     unsigned i;
nkeynes@1207:     char *p = g_strstrip(input);
nkeynes@1207:     for( i=0; isident(p[i]); i++)
nkeynes@1207:     if( p[i] == 0 ) {
nkeynes@1207:         fprintf( stderr, "Error: unable to parse variable decl '%s'\n", p );
nkeynes@1207:         return; /* incomplete decl? */
nkeynes@1207:     }
nkeynes@1207:     char *type = g_strndup(p, i);
nkeynes@1207:     p = g_strstrip(input+i);
nkeynes@1207:     for( i=0; isident(p[i]); i++)
nkeynes@1207:     if( p[i] == 0 ) {
nkeynes@1207:         fprintf( stderr, "Error: unable to parse variable decl '%s'\n", p );
nkeynes@1207:         return; /* incomplete decl? */
nkeynes@1207:     }
nkeynes@1207:     char *name = g_strndup(p, i);
nkeynes@1207:     variable_t var = g_malloc0(sizeof(struct variable));
nkeynes@1207:     var->uniform = uniform;
nkeynes@1207:     var->type = type;
nkeynes@1207:     var->name = name;
nkeynes@1207:     shader->variables = g_list_append(shader->variables,var);
nkeynes@1207: }
nkeynes@1207: 
nkeynes@1207: static shader_t findShader( GList *shaders, const char *name )
nkeynes@1207: {
nkeynes@1207:     GList *ptr = shaders;
nkeynes@1207:     while( ptr != NULL ) {
nkeynes@1207:         shader_t shader = ptr->data;
nkeynes@1207:         if( strcmp(shader->name, name) == 0 )
nkeynes@1207:             return shader;
nkeynes@1207:         ptr = ptr->next;
nkeynes@1207:     }
nkeynes@1207:     return NULL;
nkeynes@1207: }
nkeynes@1207: 
nkeynes@1207: static gboolean addProgramVariable( program_t program, variable_t variable )
nkeynes@1207: {
nkeynes@1207:     GList *ptr = program->variables;
nkeynes@1207:     while( ptr != NULL ) {
nkeynes@1207:         variable_t varp = ptr->data;
nkeynes@1207:         if( strcmp(varp->name, variable->name) == 0 ) {
nkeynes@1207:             if( varp->uniform == variable->uniform && strcmp(varp->type, variable->type) == 0 )
nkeynes@1207:                 return TRUE; /* All ok */
nkeynes@1207:             fprintf( stderr, "Error: Variable type mismatch on '%s'\n", variable->name );
nkeynes@1207:             return FALSE;
nkeynes@1207:         }
nkeynes@1207:         ptr = ptr->next;
nkeynes@1207:     }
nkeynes@1207:     program->variables = g_list_append(program->variables, variable);
nkeynes@1207:     return TRUE;
nkeynes@1207: }
nkeynes@1207: 
nkeynes@1207: static void linkPrograms( glsldata_t data )
nkeynes@1207: {
nkeynes@1207:     GList *program_ptr = data->programs;
nkeynes@1207:     unsigned i;
nkeynes@1207:     while( program_ptr != NULL ) {
nkeynes@1207:         program_t program = program_ptr->data;
nkeynes@1207:         for( i=0; program->shader_names[i] != NULL; i++ ) {
nkeynes@1207:             shader_t shader = findShader(data->shaders, program->shader_names[i]);
nkeynes@1207:             if( shader == NULL ) {
nkeynes@1207:                 fprintf( stderr, "Error: unable to resolve shader '%s'\n", program->shader_names[i] );\
nkeynes@1207:             } else {
nkeynes@1207:                 GList *varptr = shader->variables;
nkeynes@1207:                 while( varptr != NULL ) {
nkeynes@1207:                     addProgramVariable(program, varptr->data);
nkeynes@1207:                     varptr = varptr->next;
nkeynes@1207:                 }
nkeynes@1207:             }
nkeynes@1207:         }
nkeynes@1207:         program_ptr = program_ptr->next;
nkeynes@1207:     }
nkeynes@1207: 
nkeynes@1207: }
nkeynes@1207: 
nkeynes@1207: 
nkeynes@1130: static struct glsldata *readInput( const char *filename )
nkeynes@1130: {
nkeynes@1130:     char buf[MAX_LINE];
nkeynes@1130:     size_t current_size = 0, current_posn = 0;
nkeynes@1130:     unsigned i;
nkeynes@1130: 
nkeynes@1130:     FILE *f = fopen( filename, "ro" );
nkeynes@1130:     if( f == NULL ) {
nkeynes@1130:         fprintf( stderr, "Error: unable to open input file '%s': %s\n", filename, strerror(errno) );
nkeynes@1130:         exit(1);
nkeynes@1130:     }
nkeynes@1130: 
nkeynes@1130:     shader_t shader = NULL;
nkeynes@1207:     glsldata_t result = g_malloc0(sizeof(struct glsldata));
nkeynes@1130:     assert( result != NULL );
nkeynes@1130:     result->filename = strdup(filename);
nkeynes@1130: 
nkeynes@1130:     while( fgets(buf, sizeof(buf), f) != NULL ) {
nkeynes@1130:         if( strlen(buf) == 0 )
nkeynes@1130:             continue;
nkeynes@1130: 
nkeynes@1130:         if( strncmp(buf, "#vertex ", 8) == 0 ) {
nkeynes@1207:             shader = g_malloc0(sizeof(struct shader));
nkeynes@1130:             assert( shader != NULL );
nkeynes@1130:             shader->type = VERTEX_SHADER;
nkeynes@1130:             shader->name = strdup(g_strstrip(buf+8));
nkeynes@1130:             shader->body = malloc(DEF_ALLOC_SIZE);
nkeynes@1130:             shader->body[0] = '\0';
nkeynes@1130:             current_size = DEF_ALLOC_SIZE;
nkeynes@1130:             current_posn = 0;
nkeynes@1130:             result->shaders = g_list_append(result->shaders, shader);
nkeynes@1130:         } else if( strncmp( buf, "#fragment ", 10 ) == 0 ) {
nkeynes@1207:             shader = g_malloc0(sizeof(struct shader));
nkeynes@1130:             assert( shader != NULL );
nkeynes@1130:             shader->type = FRAGMENT_SHADER;
nkeynes@1130:             shader->name = strdup(g_strstrip(buf+10));
nkeynes@1130:             shader->body = malloc(DEF_ALLOC_SIZE);
nkeynes@1130:             shader->body[0] = '\0';
nkeynes@1130:             current_size = DEF_ALLOC_SIZE;
nkeynes@1130:             current_posn = 0;
nkeynes@1130:             result->shaders = g_list_append(result->shaders, shader);
nkeynes@1130:         } else if( strncmp( buf, "#program ", 9 ) == 0 ) {
nkeynes@1130:             shader = NULL;
nkeynes@1207:             program_t program = g_malloc0(sizeof(struct program));
nkeynes@1130:             char *rest = buf+9;
nkeynes@1130:             char *equals = strchr(rest, '=');
nkeynes@1130:             if( equals == NULL ) {
nkeynes@1130:                 fprintf( stderr, "Error: invalid program line %s\n", buf );
nkeynes@1130:                 exit(2);
nkeynes@1130:             }
nkeynes@1130:             *equals = '\0';
nkeynes@1130:             program->name = g_strdup(g_strstrip(rest));
nkeynes@1130:             program->shader_names = g_strsplit_set(g_strstrip(equals+1), " \t\r,", 0);
nkeynes@1130:             result->programs = g_list_append(result->programs, program);
nkeynes@1130:             for(i=0;program->shader_names[i] != NULL; i++ );
nkeynes@1130:             if( i > result->max_shaders )
nkeynes@1130:                 result->max_shaders = i;
nkeynes@1130:         } else if( shader != NULL ) {
nkeynes@1130:             size_t len = strlen(buf);
nkeynes@1130:             if( current_posn + len > current_size ) {
nkeynes@1130:                 shader->body = realloc(shader->body, current_size*2);
nkeynes@1130:                 assert( shader->body != NULL );
nkeynes@1130:                 current_size *= 2;
nkeynes@1130:             }
nkeynes@1130:             strcpy( shader->body + current_posn, buf );
nkeynes@1130:             current_posn += len;
nkeynes@1207:             char *line = g_strstrip(buf);
nkeynes@1207:             if( strncmp( line, "uniform ", 8 ) == 0 ) {
nkeynes@1207:                 parseVarDecl(shader, TRUE, line+8);
nkeynes@1207:             } else if( strncmp( line, "attribute ", 10 ) == 0 ) {
nkeynes@1207:                 parseVarDecl(shader, FALSE, line+10);
nkeynes@1207:             }
nkeynes@1130:         }
nkeynes@1130:     }
nkeynes@1130: 
nkeynes@1130:     fclose(f);
nkeynes@1207:     linkPrograms(result);
nkeynes@1130:     return result;
nkeynes@1130: }
nkeynes@405: 
nkeynes@405: /**
nkeynes@405:  * Copy input to output, quoting " characters as we go.
nkeynes@405:  */
nkeynes@1130: static void writeCString( FILE *out, const char *str )
nkeynes@405: {
nkeynes@1130:     const char *p = str;
nkeynes@405: 
nkeynes@1130:     while( *p != 0 ) {
nkeynes@1130:         if( *p == '\"' ) {
nkeynes@736:             fputc( '\\', out );
nkeynes@1130:         } else if( *p == '\n' ) {
nkeynes@736:             fputs( "\\n\\", out );
nkeynes@736:         }
nkeynes@1130:         fputc( *p, out );
nkeynes@1130:         p++;
nkeynes@1130:     }
nkeynes@1130: }
nkeynes@1130: 
nkeynes@1207: static const char *sl_type_map[][3] = {
nkeynes@1207:         {"int", "int", "int *"},
nkeynes@1229:         {"float", "float", "float *"},
nkeynes@1207:         {"short", "short", "short *"},
nkeynes@1207:         {"sampler", "int", "int *"},
nkeynes@1207:         {"vec", "GLfloat *", "GLfloat *"},
nkeynes@1207:         {"mat", "GLfloat *", "GLfloat *"},
nkeynes@1207:         {NULL, NULL}
nkeynes@1207: };
nkeynes@1207: 
nkeynes@1207: static const char *getCType( const char *sl_type, gboolean isUniform ) {
nkeynes@1207:     for( unsigned i=0; sl_type_map[i][0] != NULL; i++ ) {
nkeynes@1207:         if( strncmp(sl_type_map[i][0], sl_type, strlen(sl_type_map[i][0])) == 0 ) {
nkeynes@1207:             if( isUniform ) {
nkeynes@1207:                 return sl_type_map[i][1];
nkeynes@1207:             } else {
nkeynes@1207:                 return sl_type_map[i][2];
nkeynes@1207:             }
nkeynes@1207:         }
nkeynes@1207:     }
nkeynes@1207:     return "void *";
nkeynes@1207: }
nkeynes@1207: 
nkeynes@1130: static void writeHeader( FILE *out, glsldata_t data )
nkeynes@1130: {
nkeynes@1130:     fprintf( out, "/*\n * This file automatically generated by genglsl from %s\n */\n", data->filename );
nkeynes@1130: }
nkeynes@1130: 
nkeynes@1130: static void writeInterface( const char *filename, glsldata_t data )
nkeynes@1130: {
nkeynes@1130:     FILE *f = fopen(filename, "wo");
nkeynes@1130:     if( f == NULL ) {
nkeynes@1130:         fprintf( stderr, "Error: Unable to write interface file '%s': %s\n", filename, strerror(errno) );
nkeynes@1130:         exit(1);
nkeynes@1130:     }
nkeynes@1130: 
nkeynes@1130:     writeHeader( f, data );
nkeynes@1130:     fprintf( f, "#ifndef lxdream_glsl_H\n#define lxdream_glsl_H 1\n\n" );
nkeynes@1130: 
nkeynes@1130:     fprintf( f, "typedef enum {\n" );
nkeynes@1130:     const char *last_name = NULL;
nkeynes@1130:     int count = 0;
nkeynes@1130:     GList *shader_ptr;
nkeynes@1130:     for( shader_ptr = data->shaders; shader_ptr != NULL; shader_ptr = shader_ptr->next ) {
nkeynes@1130:         count++;
nkeynes@1130:         shader_t shader = (shader_t)shader_ptr->data;
nkeynes@1130:         fprintf( f, "    %s,\n", shader->name );
nkeynes@1130:         last_name = shader->name;
nkeynes@1130:     }
nkeynes@1130:     fprintf( f, "} shader_id;\n\n" );
nkeynes@1130: 
nkeynes@1130:     if( last_name == NULL )
nkeynes@1130:         last_name = "NULL";
nkeynes@1130:     fprintf( f, "#define GLSL_LAST_SHADER %s\n", last_name );
nkeynes@1130:     fprintf( f, "#define GLSL_NUM_SHADERS %d\n", count );
nkeynes@1130:     fprintf( f, "#define GLSL_NO_SHADER -1\n\n" );
nkeynes@1130:     fprintf( f, "#define GLSL_VERTEX_SHADER 1\n" );
nkeynes@1130:     fprintf( f, "#define GLSL_FRAGMENT_SHADER 2\n" );
nkeynes@1130: 
nkeynes@1130:     count = 0;
nkeynes@1130:     GList *program_ptr;
nkeynes@1130:     for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
nkeynes@1130:         count++;
nkeynes@1130:     }
nkeynes@1207:     fprintf( f, "#define GLSL_NUM_PROGRAMS %d\n", count );
nkeynes@1130: 
nkeynes@1207:     for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
nkeynes@1207:         program_t program = program_ptr->data;
nkeynes@1207:         GList *var_ptr;
nkeynes@1207:         fprintf( f, "void glsl_use_%s();\n", program->name );
nkeynes@1207:         for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
nkeynes@1207:             variable_t var = var_ptr->data;
nkeynes@1207:             if( var->uniform ) {
nkeynes@1207:                 fprintf( f, "void glsl_set_%s_%s(%s value); /* uniform %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name );
nkeynes@1207:             } else {
nkeynes@1208:                 fprintf( f, "void glsl_set_%s_%s_pointer(%s ptr, GLint stride); /* attribute %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name);
nkeynes@1209:                 if( strcmp(var->type,"vec4") == 0 ) { /* Special case */
nkeynes@1209:                     fprintf( f, "void glsl_set_%s_%s_vec3_pointer(%s ptr, GLint stride); /* attribute %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name);
nkeynes@1209:                 }
nkeynes@1207:             }
nkeynes@1207:         }
nkeynes@1207:     }
nkeynes@1130: 
nkeynes@1130:     fprintf( f, "#endif /* !lxdream_glsl_H */\n" );
nkeynes@1130: 
nkeynes@1130:     fclose(f);
nkeynes@1130: }
nkeynes@1130: 
nkeynes@1130: static void writeSource( const char *filename, glsldata_t data )
nkeynes@1130: {
nkeynes@1130:     FILE *f = fopen(filename, "wo");
nkeynes@1130:     if( f == NULL ) {
nkeynes@1130:         fprintf( stderr, "Error: Unable to write interface file '%s': %s\n", filename, strerror(errno) );
nkeynes@1130:         exit(1);
nkeynes@1130:     }
nkeynes@1130: 
nkeynes@1130:     writeHeader( f, data );
nkeynes@1130:     fprintf( f, "struct shader_def {\n    int type;\n    const char *source;\n};\n" );
nkeynes@1130: 
nkeynes@1130:     fprintf( f, "const struct shader_def shader_source[] = {\n" );
nkeynes@1130:     GList *shader_ptr;
nkeynes@1130:     for( shader_ptr = data->shaders; shader_ptr != NULL; shader_ptr = shader_ptr->next ) {
nkeynes@1130:         shader_t shader = (shader_t)shader_ptr->data;
nkeynes@1130:         fprintf( f, "    {%s,\"", (shader->type == VERTEX_SHADER ? "GLSL_VERTEX_SHADER" : "GLSL_FRAGMENT_SHADER") );
nkeynes@1130:         writeCString( f, shader->body );
nkeynes@1130:         fprintf( f, "\"},\n" );
nkeynes@1130:     }
nkeynes@1130:     fprintf( f, "    {GLSL_NO_SHADER,NULL}};\n\n" );
nkeynes@1130: 
nkeynes@1130:     fprintf( f, "const int program_list[][%d] = {\n", data->max_shaders+1 );
nkeynes@1130:     GList *program_ptr;
nkeynes@1207:     GList *var_ptr;
nkeynes@1130:     unsigned i;
nkeynes@1130:     for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
nkeynes@1130:         program_t program = (program_t)program_ptr->data;
nkeynes@1130:         fprintf( f, "    {" );
nkeynes@1130:         for( i=0; program->shader_names[i] != NULL; i++ ) {
nkeynes@1130:             fprintf(f, "%s,", program->shader_names[i] );
nkeynes@1130:         }
nkeynes@1130:         fprintf( f, "GLSL_NO_SHADER},\n" );
nkeynes@1130:     }
nkeynes@1130:     fprintf( f, "    {GLSL_NO_SHADER}};\n" );
nkeynes@1130: 
nkeynes@1207:     /* per-program functions */
nkeynes@1207:     for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
nkeynes@1207:         program_t program = program_ptr->data;
nkeynes@1207:         fprintf( f, "\nstatic gl_program_t prog_%s_id;\n",program->name );
nkeynes@1207:         for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
nkeynes@1207:             variable_t var = var_ptr->data;
nkeynes@1207:             fprintf( f, "static GLint var_%s_%s_loc;\n", program->name, var->name);
nkeynes@1207:         }
nkeynes@1207: 
nkeynes@1207:     }
nkeynes@1207:     for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
nkeynes@1207:         program_t program = program_ptr->data;
nkeynes@1208:         fprintf( f, "\nstatic void glsl_cleanup_%s() {\n", program->name );
nkeynes@1208:         for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
nkeynes@1208:             variable_t var = var_ptr->data;
nkeynes@1208:             if( !var->uniform ) {
nkeynes@1208:                 fprintf( f, "    glsl_disable_attrib(var_%s_%s_loc);\n", program->name, var->name );
nkeynes@1208:             }
nkeynes@1208:         }
nkeynes@1208:         fprintf( f, "}\n");
nkeynes@1208: 
nkeynes@1208:         fprintf( f, "\nvoid glsl_use_%s() {\n", program->name );
nkeynes@1208:         fprintf( f, "    glsl_use_program(prog_%s_id);\n", program->name );
nkeynes@1229:         fprintf( f, "    glsl_set_cleanup_fn(glsl_cleanup_%s);\n", program->name );
nkeynes@1208:         for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
nkeynes@1208:             variable_t var = var_ptr->data;
nkeynes@1208:             if( !var->uniform ) {
nkeynes@1208:                 fprintf( f, "    glsl_enable_attrib(var_%s_%s_loc);\n", program->name, var->name );
nkeynes@1208:             }
nkeynes@1208:         }
nkeynes@1208:         fprintf( f, "}\n");
nkeynes@1208: 
nkeynes@1207: 
nkeynes@1207:         for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
nkeynes@1207:             variable_t var = var_ptr->data;
nkeynes@1207:             if( var->uniform ) {
nkeynes@1207:                 fprintf( f, "void glsl_set_%s_%s(%s value){ /* uniform %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name );
nkeynes@1207:                 fprintf( f, "    glsl_set_uniform_%s(var_%s_%s_loc,value);\n}\n", var->type, program->name, var->name );
nkeynes@1207:             } else {
nkeynes@1207:                 fprintf( f, "void glsl_set_%s_%s_pointer(%s ptr, GLsizei stride){ /* attribute %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name);
nkeynes@1207:                 fprintf( f, "    glsl_set_attrib_%s(var_%s_%s_loc,stride, ptr);\n}\n", var->type, program->name, var->name );
nkeynes@1209:                 if( strcmp(var->type,"vec4") == 0 ) { /* Special case to load vec3 arrays into a vec4 */
nkeynes@1209:                     fprintf( f, "void glsl_set_%s_%s_vec3_pointer(%s ptr, GLsizei stride){ /* attribute %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name);
nkeynes@1209:                     fprintf( f, "    glsl_set_attrib_vec3(var_%s_%s_loc,stride, ptr);\n}\n", program->name, var->name );
nkeynes@1209:                 }
nkeynes@1207:             }
nkeynes@1207:         }
nkeynes@1207:     }
nkeynes@1207: 
nkeynes@1207:     fprintf( f, "\nstatic void glsl_init_programs( gl_program_t *ids ) {\n" );
nkeynes@1207:     for( program_ptr = data->programs, i=0; program_ptr != NULL; program_ptr = program_ptr->next, i++ ) {
nkeynes@1207:         program_t program = program_ptr->data;
nkeynes@1207: 
nkeynes@1207:         fprintf( f, "    prog_%s_id = ids[%d];\n\n", program->name, i );
nkeynes@1207:         for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
nkeynes@1207:             variable_t var = var_ptr->data;
nkeynes@1207:             if( var->uniform ) {
nkeynes@1207:                 fprintf( f, "    var_%s_%s_loc = glsl_get_uniform_location(prog_%s_id, \"%s\");\n", program->name, var->name, program->name, var->name );
nkeynes@1207:             } else {
nkeynes@1207:                 fprintf( f, "    var_%s_%s_loc = glsl_get_attrib_location(prog_%s_id, \"%s\");\n", program->name, var->name, program->name, var->name );
nkeynes@1207:             }
nkeynes@1207:         }
nkeynes@1207:     }
nkeynes@1207:     fprintf( f, "}\n" );
nkeynes@1207: 
nkeynes@1130:     fclose(f);
nkeynes@1130: }
nkeynes@1130: 
nkeynes@1130: const char *makeExtension(const char *basename, const char *ext)
nkeynes@1130: {
nkeynes@1130:     const char *oldext = strrchr(basename, '.');
nkeynes@1130:     if( oldext == NULL ) {
nkeynes@1130:         return g_strdup_printf("%s%s", basename, ext);
nkeynes@1130:     } else {
nkeynes@1169:         return g_strdup_printf("%.*s%s", (int)(oldext-basename), basename, ext);
nkeynes@405:     }
nkeynes@405: }
nkeynes@405: 
nkeynes@405: int main( int argc, char *argv[] )
nkeynes@405: {
nkeynes@1130:     if( argc < 2 ) {
nkeynes@1130:         fprintf( stderr, "Usage: genglsl <glsl-source-file> [output.c [output.h]]\n");
nkeynes@736:         exit(1);
nkeynes@405:     }
nkeynes@405: 
nkeynes@1130:     glsldata_t data = readInput(argv[1]);
nkeynes@1130: 
nkeynes@1130:     const char *sourcefile, *ifacefile;
nkeynes@1130:     if( argc > 2 ) {
nkeynes@1130:         sourcefile = argv[2];
nkeynes@1130:     } else {
nkeynes@1130:         sourcefile = makeExtension(argv[1], ".def");
nkeynes@405:     }
nkeynes@405: 
nkeynes@1130:     if( argc > 3 ) {
nkeynes@1130:         ifacefile = argv[3];
nkeynes@1130:     } else {
nkeynes@1130:         ifacefile = makeExtension(sourcefile, ".h");
nkeynes@405:     }
nkeynes@405: 
nkeynes@1130:     writeSource( sourcefile, data );
nkeynes@1130:     writeInterface( ifacefile, data );
nkeynes@405:     return 0;
nkeynes@405: }