nkeynes@405 | 1 | /**
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nkeynes@561 | 2 | * $Id$
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nkeynes@405 | 3 | *
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nkeynes@1130 | 4 | * Tool to take an input .glsl file and write out a corresponding .c and .h
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nkeynes@1130 | 5 | * file based on the content. The .glsl file contains a number of shaders
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nkeynes@1130 | 6 | * marked with either #fragment <name> or #vertex <name>
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nkeynes@1130 | 7 | * a C file with appropriate escaping, as well as program definitions
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nkeynes@1130 | 8 | * written as #program <name> = <shader1> <shader2> ... <shaderN>
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nkeynes@405 | 9 | *
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nkeynes@1234 | 10 | * Copyright (c) 2007-2012 Nathan Keynes.
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nkeynes@405 | 11 | *
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nkeynes@405 | 12 | * This program is free software; you can redistribute it and/or modify
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nkeynes@405 | 13 | * it under the terms of the GNU General Public License as published by
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nkeynes@405 | 14 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@405 | 15 | * (at your option) any later version.
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nkeynes@405 | 16 | *
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nkeynes@405 | 17 | * This program is distributed in the hope that it will be useful,
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nkeynes@405 | 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@405 | 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@405 | 20 | * GNU General Public License for more details.
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nkeynes@405 | 21 | */
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nkeynes@405 | 22 |
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nkeynes@1130 | 23 | #include <assert.h>
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nkeynes@1207 | 24 | #include <ctype.h>
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nkeynes@1130 | 25 | #include <errno.h>
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nkeynes@405 | 26 | #include <stdio.h>
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nkeynes@405 | 27 | #include <stdlib.h>
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nkeynes@1130 | 28 | #include <string.h>
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nkeynes@1234 | 29 | #include <getopt.h>
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nkeynes@1296 | 30 | #include <glib.h>
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nkeynes@1235 | 31 | #include "../../config.h"
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nkeynes@1130 | 32 |
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nkeynes@1130 | 33 | #define MAX_LINE 4096
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nkeynes@1130 | 34 | #define DEF_ALLOC_SIZE 4096
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nkeynes@1130 | 35 | #define MAX_SHADERS 128
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nkeynes@1130 | 36 |
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nkeynes@1130 | 37 | typedef enum {
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nkeynes@1130 | 38 | VERTEX_SHADER = 0,
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nkeynes@1130 | 39 | FRAGMENT_SHADER = 1
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nkeynes@1130 | 40 | } shader_type_t;
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nkeynes@1130 | 41 |
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nkeynes@1207 | 42 | typedef struct variable {
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nkeynes@1207 | 43 | gboolean uniform; /* TRUE = uniform, FALSE = attribute */
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nkeynes@1207 | 44 | const char *name;
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nkeynes@1207 | 45 | const char *type;
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nkeynes@1207 | 46 | } *variable_t;
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nkeynes@1207 | 47 |
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nkeynes@1130 | 48 | typedef struct shader {
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nkeynes@1130 | 49 | shader_type_t type;
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nkeynes@1130 | 50 | const char *name;
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nkeynes@1130 | 51 | char *body;
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nkeynes@1207 | 52 | GList *variables;
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nkeynes@1130 | 53 | } *shader_t;
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nkeynes@1130 | 54 |
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nkeynes@1130 | 55 | typedef struct program {
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nkeynes@1130 | 56 | const char *name;
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nkeynes@1130 | 57 | gchar **shader_names;
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nkeynes@1207 | 58 | GList *shaders;
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nkeynes@1207 | 59 | GList *variables;
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nkeynes@1130 | 60 | } *program_t;
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nkeynes@1130 | 61 |
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nkeynes@1130 | 62 | typedef struct glsldata {
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nkeynes@1130 | 63 | const char *filename;
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nkeynes@1130 | 64 | unsigned max_shaders;
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nkeynes@1130 | 65 | GList *shaders;
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nkeynes@1130 | 66 | GList *programs;
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nkeynes@1130 | 67 | } *glsldata_t;
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nkeynes@1130 | 68 |
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nkeynes@1207 | 69 | #define isident(c) (isalnum(c)||(c)=='_')
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nkeynes@1207 | 70 |
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nkeynes@1207 | 71 | static void parseVarDecl( shader_t shader, gboolean uniform, char *input )
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nkeynes@1207 | 72 | {
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nkeynes@1207 | 73 | unsigned i;
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nkeynes@1207 | 74 | char *p = g_strstrip(input);
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nkeynes@1207 | 75 | for( i=0; isident(p[i]); i++)
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nkeynes@1207 | 76 | if( p[i] == 0 ) {
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nkeynes@1207 | 77 | fprintf( stderr, "Error: unable to parse variable decl '%s'\n", p );
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nkeynes@1207 | 78 | return; /* incomplete decl? */
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nkeynes@1207 | 79 | }
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nkeynes@1207 | 80 | char *type = g_strndup(p, i);
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nkeynes@1207 | 81 | p = g_strstrip(input+i);
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nkeynes@1207 | 82 | for( i=0; isident(p[i]); i++)
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nkeynes@1207 | 83 | if( p[i] == 0 ) {
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nkeynes@1207 | 84 | fprintf( stderr, "Error: unable to parse variable decl '%s'\n", p );
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nkeynes@1207 | 85 | return; /* incomplete decl? */
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nkeynes@1207 | 86 | }
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nkeynes@1207 | 87 | char *name = g_strndup(p, i);
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nkeynes@1207 | 88 | variable_t var = g_malloc0(sizeof(struct variable));
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nkeynes@1207 | 89 | var->uniform = uniform;
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nkeynes@1207 | 90 | var->type = type;
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nkeynes@1207 | 91 | var->name = name;
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nkeynes@1207 | 92 | shader->variables = g_list_append(shader->variables,var);
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nkeynes@1207 | 93 | }
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nkeynes@1207 | 94 |
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nkeynes@1207 | 95 | static shader_t findShader( GList *shaders, const char *name )
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nkeynes@1207 | 96 | {
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nkeynes@1207 | 97 | GList *ptr = shaders;
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nkeynes@1207 | 98 | while( ptr != NULL ) {
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nkeynes@1207 | 99 | shader_t shader = ptr->data;
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nkeynes@1207 | 100 | if( strcmp(shader->name, name) == 0 )
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nkeynes@1207 | 101 | return shader;
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nkeynes@1207 | 102 | ptr = ptr->next;
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nkeynes@1207 | 103 | }
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nkeynes@1207 | 104 | return NULL;
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nkeynes@1207 | 105 | }
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nkeynes@1207 | 106 |
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nkeynes@1207 | 107 | static gboolean addProgramVariable( program_t program, variable_t variable )
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nkeynes@1207 | 108 | {
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nkeynes@1207 | 109 | GList *ptr = program->variables;
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nkeynes@1207 | 110 | while( ptr != NULL ) {
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nkeynes@1207 | 111 | variable_t varp = ptr->data;
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nkeynes@1207 | 112 | if( strcmp(varp->name, variable->name) == 0 ) {
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nkeynes@1207 | 113 | if( varp->uniform == variable->uniform && strcmp(varp->type, variable->type) == 0 )
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nkeynes@1207 | 114 | return TRUE; /* All ok */
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nkeynes@1207 | 115 | fprintf( stderr, "Error: Variable type mismatch on '%s'\n", variable->name );
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nkeynes@1207 | 116 | return FALSE;
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nkeynes@1207 | 117 | }
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nkeynes@1207 | 118 | ptr = ptr->next;
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nkeynes@1207 | 119 | }
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nkeynes@1207 | 120 | program->variables = g_list_append(program->variables, variable);
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nkeynes@1207 | 121 | return TRUE;
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nkeynes@1207 | 122 | }
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nkeynes@1207 | 123 |
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nkeynes@1207 | 124 | static void linkPrograms( glsldata_t data )
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nkeynes@1207 | 125 | {
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nkeynes@1207 | 126 | GList *program_ptr = data->programs;
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nkeynes@1207 | 127 | unsigned i;
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nkeynes@1207 | 128 | while( program_ptr != NULL ) {
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nkeynes@1207 | 129 | program_t program = program_ptr->data;
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nkeynes@1207 | 130 | for( i=0; program->shader_names[i] != NULL; i++ ) {
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nkeynes@1207 | 131 | shader_t shader = findShader(data->shaders, program->shader_names[i]);
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nkeynes@1207 | 132 | if( shader == NULL ) {
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nkeynes@1207 | 133 | fprintf( stderr, "Error: unable to resolve shader '%s'\n", program->shader_names[i] );\
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nkeynes@1207 | 134 | } else {
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nkeynes@1207 | 135 | GList *varptr = shader->variables;
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nkeynes@1207 | 136 | while( varptr != NULL ) {
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nkeynes@1207 | 137 | addProgramVariable(program, varptr->data);
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nkeynes@1207 | 138 | varptr = varptr->next;
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nkeynes@1207 | 139 | }
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nkeynes@1207 | 140 | }
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nkeynes@1207 | 141 | }
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nkeynes@1207 | 142 | program_ptr = program_ptr->next;
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nkeynes@1207 | 143 | }
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nkeynes@1207 | 144 |
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nkeynes@1207 | 145 | }
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nkeynes@1207 | 146 |
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nkeynes@1235 | 147 | static GList *temp_filenames = NULL;
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nkeynes@1207 | 148 |
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nkeynes@1235 | 149 | static void cleanup_tempfiles(void)
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nkeynes@1235 | 150 | {
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nkeynes@1235 | 151 | while( temp_filenames != NULL ) {
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nkeynes@1235 | 152 | unlink( (char *)temp_filenames->data );
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nkeynes@1235 | 153 | g_free(temp_filenames->data);
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nkeynes@1235 | 154 | temp_filenames = temp_filenames->next;
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nkeynes@1235 | 155 | }
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nkeynes@1235 | 156 | }
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nkeynes@1235 | 157 |
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nkeynes@1235 | 158 | /**
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nkeynes@1235 | 159 | * Preprocess the input file and return a temporary filename containing the result
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nkeynes@1235 | 160 | */
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nkeynes@1235 | 161 | static FILE *preprocessInput( const char *filename, GList *cpp_opts )
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nkeynes@1235 | 162 | {
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nkeynes@1235 | 163 | char tmpname[] = "/tmp/genglsl.XXXXXXXX";
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nkeynes@1235 | 164 | int fd = mkstemp(tmpname);
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nkeynes@1235 | 165 | if( fd == -1 ) {
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nkeynes@1235 | 166 | fprintf( stderr, "Error: unable to get a temporary filename (%s)\n", strerror(errno) );
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nkeynes@1235 | 167 | exit(2);
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nkeynes@1235 | 168 | }
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nkeynes@1235 | 169 | char *quoted_filename = g_shell_quote(filename);
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nkeynes@1235 | 170 |
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nkeynes@1235 | 171 | int nOpts = g_list_length(cpp_opts);
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nkeynes@1235 | 172 | gchar *quoted_opts_arr[nOpts];
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nkeynes@1235 | 173 | int length = 0, count=0;
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nkeynes@1235 | 174 | for( GList *ptr = cpp_opts; ptr != NULL; ptr = ptr->next ) {
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nkeynes@1235 | 175 | quoted_opts_arr[count] = g_shell_quote((gchar *)ptr->data);
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nkeynes@1235 | 176 | length += strlen(quoted_opts_arr[count++]) + 1;
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nkeynes@1235 | 177 | }
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nkeynes@1235 | 178 | gchar quoted_cpp_opts[length];
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nkeynes@1235 | 179 | quoted_cpp_opts[0] = '\0';
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nkeynes@1235 | 180 | for( count=0; count<nOpts; count++ ) {
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nkeynes@1235 | 181 | if( count != 0 )
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nkeynes@1235 | 182 | strcat(quoted_cpp_opts, " ");
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nkeynes@1235 | 183 | strcat(quoted_cpp_opts, quoted_opts_arr[count]);
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nkeynes@1235 | 184 | g_free(quoted_opts_arr[count++]);
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nkeynes@1235 | 185 | }
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nkeynes@1235 | 186 |
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nkeynes@1288 | 187 | const char *command = g_strdup_printf("%s -e 's/^#program/#pragma program/' -e 's/^#fragment/#pragma fragment/' -e 's/#vertex/#pragma vertex/' %s | %s %s - > %s",
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nkeynes@1235 | 188 | BUILD_SED_PROG, quoted_filename, BUILD_CPP_PROG, quoted_cpp_opts, tmpname );
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nkeynes@1235 | 189 | if( system(command) != 0 ) {
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nkeynes@1235 | 190 | fprintf( stderr, "Error: unable to run preprocessor command '%s' (%s)\n", command, strerror(errno) );
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nkeynes@1235 | 191 | exit(2);
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nkeynes@1235 | 192 | }
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nkeynes@1235 | 193 |
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nkeynes@1235 | 194 | temp_filenames = g_list_append(temp_filenames, g_strdup(tmpname));
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nkeynes@1235 | 195 | return fdopen(fd, "r");
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nkeynes@1235 | 196 | }
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nkeynes@1235 | 197 |
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nkeynes@1235 | 198 | static void readInput( const char *filename, GList *cpp_opts, glsldata_t result )
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nkeynes@1130 | 199 | {
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nkeynes@1130 | 200 | char buf[MAX_LINE];
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nkeynes@1130 | 201 | size_t current_size = 0, current_posn = 0;
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nkeynes@1130 | 202 | unsigned i;
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nkeynes@1130 | 203 |
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nkeynes@1235 | 204 |
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nkeynes@1235 | 205 | FILE *f = preprocessInput(filename, cpp_opts );
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nkeynes@1130 | 206 | if( f == NULL ) {
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nkeynes@1130 | 207 | fprintf( stderr, "Error: unable to open input file '%s': %s\n", filename, strerror(errno) );
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nkeynes@1234 | 208 | exit(2);
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nkeynes@1130 | 209 | }
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nkeynes@1130 | 210 |
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nkeynes@1130 | 211 | shader_t shader = NULL;
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nkeynes@1234 | 212 | if( result->filename == NULL ) {
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nkeynes@1234 | 213 | result->filename = g_strdup(filename);
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nkeynes@1234 | 214 | } else {
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nkeynes@1234 | 215 | const gchar *tmp = result->filename;
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nkeynes@1234 | 216 | result->filename = g_strdup_printf("%s, %s", tmp, filename);
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nkeynes@1234 | 217 | g_free((gchar *)tmp);
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nkeynes@1234 | 218 | }
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nkeynes@1130 | 219 |
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nkeynes@1130 | 220 | while( fgets(buf, sizeof(buf), f) != NULL ) {
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nkeynes@1130 | 221 | if( strlen(buf) == 0 )
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nkeynes@1130 | 222 | continue;
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nkeynes@1130 | 223 |
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nkeynes@1235 | 224 | if( buf[0] == '#' ) {
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nkeynes@1235 | 225 | char *p = buf+1;
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nkeynes@1235 | 226 | if( strncmp(p, "pragma ", 7) == 0 ) {
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nkeynes@1235 | 227 | p += 7;
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nkeynes@1130 | 228 | }
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nkeynes@1235 | 229 | if( strncmp(p, "vertex ", 7) == 0 ) {
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nkeynes@1235 | 230 | shader = g_malloc0(sizeof(struct shader));
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nkeynes@1235 | 231 | assert( shader != NULL );
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nkeynes@1235 | 232 | shader->type = VERTEX_SHADER;
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nkeynes@1235 | 233 | shader->name = strdup(g_strstrip(p+7));
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nkeynes@1235 | 234 | shader->body = malloc(DEF_ALLOC_SIZE);
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nkeynes@1235 | 235 | shader->body[0] = '\0';
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nkeynes@1235 | 236 | current_size = DEF_ALLOC_SIZE;
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nkeynes@1235 | 237 | current_posn = 0;
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nkeynes@1235 | 238 | result->shaders = g_list_append(result->shaders, shader);
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nkeynes@1235 | 239 | } else if( strncmp( p, "fragment ", 9 ) == 0 ) {
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nkeynes@1235 | 240 | shader = g_malloc0(sizeof(struct shader));
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nkeynes@1235 | 241 | assert( shader != NULL );
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nkeynes@1235 | 242 | shader->type = FRAGMENT_SHADER;
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nkeynes@1235 | 243 | shader->name = strdup(g_strstrip(p+9));
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nkeynes@1235 | 244 | shader->body = malloc(DEF_ALLOC_SIZE);
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nkeynes@1235 | 245 | shader->body[0] = '\0';
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nkeynes@1235 | 246 | current_size = DEF_ALLOC_SIZE;
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nkeynes@1235 | 247 | current_posn = 0;
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nkeynes@1235 | 248 | result->shaders = g_list_append(result->shaders, shader);
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nkeynes@1235 | 249 | } else if( strncmp( p, "program ", 8 ) == 0 ) {
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nkeynes@1235 | 250 | shader = NULL;
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nkeynes@1235 | 251 | program_t program = g_malloc0(sizeof(struct program));
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nkeynes@1235 | 252 | char *rest = p+8;
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nkeynes@1235 | 253 | char *equals = strchr(rest, '=');
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nkeynes@1235 | 254 | if( equals == NULL ) {
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nkeynes@1235 | 255 | fprintf( stderr, "Error: invalid program line %s\n", buf );
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nkeynes@1235 | 256 | exit(2);
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nkeynes@1235 | 257 | }
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nkeynes@1235 | 258 | *equals = '\0';
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nkeynes@1235 | 259 | program->name = g_strdup(g_strstrip(rest));
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nkeynes@1235 | 260 | program->shader_names = g_strsplit_set(g_strstrip(equals+1), " \t\r,", 0);
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nkeynes@1235 | 261 | result->programs = g_list_append(result->programs, program);
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nkeynes@1235 | 262 | for(i=0;program->shader_names[i] != NULL; i++ );
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nkeynes@1235 | 263 | if( i > result->max_shaders )
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nkeynes@1235 | 264 | result->max_shaders = i;
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nkeynes@1235 | 265 | }
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nkeynes@1235 | 266 | /* Else discard any other # lines */
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nkeynes@1130 | 267 | } else if( shader != NULL ) {
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nkeynes@1130 | 268 | size_t len = strlen(buf);
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nkeynes@1130 | 269 | if( current_posn + len > current_size ) {
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nkeynes@1130 | 270 | shader->body = realloc(shader->body, current_size*2);
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nkeynes@1130 | 271 | assert( shader->body != NULL );
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nkeynes@1130 | 272 | current_size *= 2;
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nkeynes@1130 | 273 | }
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nkeynes@1130 | 274 | strcpy( shader->body + current_posn, buf );
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nkeynes@1130 | 275 | current_posn += len;
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nkeynes@1207 | 276 | char *line = g_strstrip(buf);
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nkeynes@1207 | 277 | if( strncmp( line, "uniform ", 8 ) == 0 ) {
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nkeynes@1207 | 278 | parseVarDecl(shader, TRUE, line+8);
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nkeynes@1207 | 279 | } else if( strncmp( line, "attribute ", 10 ) == 0 ) {
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nkeynes@1207 | 280 | parseVarDecl(shader, FALSE, line+10);
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nkeynes@1207 | 281 | }
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nkeynes@1130 | 282 | }
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nkeynes@1130 | 283 | }
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nkeynes@1130 | 284 |
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nkeynes@1130 | 285 | fclose(f);
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nkeynes@1130 | 286 | }
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nkeynes@405 | 287 |
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nkeynes@405 | 288 | /**
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nkeynes@405 | 289 | * Copy input to output, quoting " characters as we go.
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nkeynes@405 | 290 | */
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nkeynes@1130 | 291 | static void writeCString( FILE *out, const char *str )
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nkeynes@405 | 292 | {
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nkeynes@1130 | 293 | const char *p = str;
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nkeynes@405 | 294 |
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nkeynes@1130 | 295 | while( *p != 0 ) {
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nkeynes@1130 | 296 | if( *p == '\"' ) {
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nkeynes@736 | 297 | fputc( '\\', out );
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nkeynes@1130 | 298 | } else if( *p == '\n' ) {
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nkeynes@736 | 299 | fputs( "\\n\\", out );
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nkeynes@736 | 300 | }
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nkeynes@1130 | 301 | fputc( *p, out );
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nkeynes@1130 | 302 | p++;
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nkeynes@1130 | 303 | }
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nkeynes@1130 | 304 | }
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nkeynes@1130 | 305 |
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nkeynes@1207 | 306 | static const char *sl_type_map[][3] = {
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nkeynes@1207 | 307 | {"int", "int", "int *"},
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nkeynes@1229 | 308 | {"float", "float", "float *"},
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nkeynes@1207 | 309 | {"short", "short", "short *"},
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nkeynes@1207 | 310 | {"sampler", "int", "int *"},
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nkeynes@1207 | 311 | {"vec", "GLfloat *", "GLfloat *"},
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nkeynes@1207 | 312 | {"mat", "GLfloat *", "GLfloat *"},
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nkeynes@1207 | 313 | {NULL, NULL}
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nkeynes@1207 | 314 | };
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nkeynes@1207 | 315 |
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nkeynes@1207 | 316 | static const char *getCType( const char *sl_type, gboolean isUniform ) {
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nkeynes@1207 | 317 | for( unsigned i=0; sl_type_map[i][0] != NULL; i++ ) {
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nkeynes@1207 | 318 | if( strncmp(sl_type_map[i][0], sl_type, strlen(sl_type_map[i][0])) == 0 ) {
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nkeynes@1207 | 319 | if( isUniform ) {
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nkeynes@1207 | 320 | return sl_type_map[i][1];
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nkeynes@1207 | 321 | } else {
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nkeynes@1207 | 322 | return sl_type_map[i][2];
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nkeynes@1207 | 323 | }
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nkeynes@1207 | 324 | }
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nkeynes@1207 | 325 | }
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nkeynes@1207 | 326 | return "void *";
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nkeynes@1207 | 327 | }
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nkeynes@1207 | 328 |
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nkeynes@1130 | 329 | static void writeHeader( FILE *out, glsldata_t data )
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nkeynes@1130 | 330 | {
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nkeynes@1130 | 331 | fprintf( out, "/*\n * This file automatically generated by genglsl from %s\n */\n", data->filename );
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nkeynes@1130 | 332 | }
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nkeynes@1130 | 333 |
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nkeynes@1130 | 334 | static void writeInterface( const char *filename, glsldata_t data )
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nkeynes@1130 | 335 | {
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nkeynes@1130 | 336 | FILE *f = fopen(filename, "wo");
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nkeynes@1130 | 337 | if( f == NULL ) {
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nkeynes@1130 | 338 | fprintf( stderr, "Error: Unable to write interface file '%s': %s\n", filename, strerror(errno) );
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nkeynes@1130 | 339 | exit(1);
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nkeynes@1130 | 340 | }
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nkeynes@1130 | 341 |
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nkeynes@1130 | 342 | writeHeader( f, data );
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nkeynes@1130 | 343 | fprintf( f, "#ifndef lxdream_glsl_H\n#define lxdream_glsl_H 1\n\n" );
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nkeynes@1130 | 344 |
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nkeynes@1130 | 345 | fprintf( f, "typedef enum {\n" );
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nkeynes@1130 | 346 | const char *last_name = NULL;
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nkeynes@1130 | 347 | int count = 0;
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nkeynes@1130 | 348 | GList *shader_ptr;
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nkeynes@1130 | 349 | for( shader_ptr = data->shaders; shader_ptr != NULL; shader_ptr = shader_ptr->next ) {
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nkeynes@1130 | 350 | count++;
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nkeynes@1130 | 351 | shader_t shader = (shader_t)shader_ptr->data;
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nkeynes@1130 | 352 | fprintf( f, " %s,\n", shader->name );
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nkeynes@1130 | 353 | last_name = shader->name;
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nkeynes@1130 | 354 | }
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nkeynes@1130 | 355 | fprintf( f, "} shader_id;\n\n" );
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nkeynes@1130 | 356 |
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nkeynes@1130 | 357 | if( last_name == NULL )
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nkeynes@1130 | 358 | last_name = "NULL";
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nkeynes@1130 | 359 | fprintf( f, "#define GLSL_LAST_SHADER %s\n", last_name );
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nkeynes@1130 | 360 | fprintf( f, "#define GLSL_NUM_SHADERS %d\n", count );
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nkeynes@1130 | 361 | fprintf( f, "#define GLSL_NO_SHADER -1\n\n" );
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nkeynes@1130 | 362 | fprintf( f, "#define GLSL_VERTEX_SHADER 1\n" );
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nkeynes@1130 | 363 | fprintf( f, "#define GLSL_FRAGMENT_SHADER 2\n" );
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nkeynes@1130 | 364 |
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nkeynes@1130 | 365 | count = 0;
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nkeynes@1130 | 366 | GList *program_ptr;
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nkeynes@1130 | 367 | for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
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nkeynes@1130 | 368 | count++;
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nkeynes@1130 | 369 | }
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nkeynes@1207 | 370 | fprintf( f, "#define GLSL_NUM_PROGRAMS %d\n", count );
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nkeynes@1130 | 371 |
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nkeynes@1207 | 372 | for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
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nkeynes@1207 | 373 | program_t program = program_ptr->data;
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nkeynes@1207 | 374 | GList *var_ptr;
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nkeynes@1207 | 375 | fprintf( f, "void glsl_use_%s();\n", program->name );
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nkeynes@1207 | 376 | for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
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nkeynes@1207 | 377 | variable_t var = var_ptr->data;
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nkeynes@1207 | 378 | if( var->uniform ) {
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nkeynes@1207 | 379 | 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 );
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nkeynes@1207 | 380 | } else {
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nkeynes@1208 | 381 | 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);
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nkeynes@1209 | 382 | if( strcmp(var->type,"vec4") == 0 ) { /* Special case */
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nkeynes@1240 | 383 | fprintf( f, "void glsl_set_%s_%s_vec2_pointer(%s ptr, GLint stride); /* attribute %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name);
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nkeynes@1209 | 384 | 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);
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nkeynes@1209 | 385 | }
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nkeynes@1207 | 386 | }
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nkeynes@1207 | 387 | }
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nkeynes@1207 | 388 | }
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nkeynes@1130 | 389 |
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nkeynes@1258 | 390 | fprintf( f, "void glsl_clear_shader();\n" );
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nkeynes@1258 | 391 |
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nkeynes@1130 | 392 | fprintf( f, "#endif /* !lxdream_glsl_H */\n" );
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nkeynes@1130 | 393 |
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nkeynes@1130 | 394 | fclose(f);
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nkeynes@1130 | 395 | }
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nkeynes@1130 | 396 |
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nkeynes@1130 | 397 | static void writeSource( const char *filename, glsldata_t data )
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nkeynes@1130 | 398 | {
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nkeynes@1130 | 399 | FILE *f = fopen(filename, "wo");
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nkeynes@1130 | 400 | if( f == NULL ) {
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nkeynes@1130 | 401 | fprintf( stderr, "Error: Unable to write interface file '%s': %s\n", filename, strerror(errno) );
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nkeynes@1130 | 402 | exit(1);
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nkeynes@1130 | 403 | }
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nkeynes@1130 | 404 |
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nkeynes@1130 | 405 | writeHeader( f, data );
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nkeynes@1130 | 406 | fprintf( f, "struct shader_def {\n int type;\n const char *source;\n};\n" );
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nkeynes@1130 | 407 |
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nkeynes@1130 | 408 | fprintf( f, "const struct shader_def shader_source[] = {\n" );
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nkeynes@1130 | 409 | GList *shader_ptr;
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nkeynes@1130 | 410 | for( shader_ptr = data->shaders; shader_ptr != NULL; shader_ptr = shader_ptr->next ) {
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nkeynes@1130 | 411 | shader_t shader = (shader_t)shader_ptr->data;
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nkeynes@1130 | 412 | fprintf( f, " {%s,\"", (shader->type == VERTEX_SHADER ? "GLSL_VERTEX_SHADER" : "GLSL_FRAGMENT_SHADER") );
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nkeynes@1130 | 413 | writeCString( f, shader->body );
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nkeynes@1130 | 414 | fprintf( f, "\"},\n" );
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nkeynes@1130 | 415 | }
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nkeynes@1130 | 416 | fprintf( f, " {GLSL_NO_SHADER,NULL}};\n\n" );
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nkeynes@1130 | 417 |
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nkeynes@1130 | 418 | fprintf( f, "const int program_list[][%d] = {\n", data->max_shaders+1 );
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nkeynes@1130 | 419 | GList *program_ptr;
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nkeynes@1207 | 420 | GList *var_ptr;
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nkeynes@1130 | 421 | unsigned i;
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nkeynes@1130 | 422 | for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
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nkeynes@1130 | 423 | program_t program = (program_t)program_ptr->data;
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nkeynes@1130 | 424 | fprintf( f, " {" );
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nkeynes@1130 | 425 | for( i=0; program->shader_names[i] != NULL; i++ ) {
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nkeynes@1130 | 426 | fprintf(f, "%s,", program->shader_names[i] );
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nkeynes@1130 | 427 | }
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nkeynes@1130 | 428 | fprintf( f, "GLSL_NO_SHADER},\n" );
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nkeynes@1130 | 429 | }
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nkeynes@1130 | 430 | fprintf( f, " {GLSL_NO_SHADER}};\n" );
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nkeynes@1130 | 431 |
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nkeynes@1207 | 432 | /* per-program functions */
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nkeynes@1207 | 433 | for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
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nkeynes@1207 | 434 | program_t program = program_ptr->data;
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nkeynes@1207 | 435 | fprintf( f, "\nstatic gl_program_t prog_%s_id;\n",program->name );
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nkeynes@1207 | 436 | for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
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nkeynes@1207 | 437 | variable_t var = var_ptr->data;
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nkeynes@1207 | 438 | fprintf( f, "static GLint var_%s_%s_loc;\n", program->name, var->name);
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nkeynes@1207 | 439 | }
|
nkeynes@1207 | 440 |
|
nkeynes@1207 | 441 | }
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nkeynes@1207 | 442 | for( program_ptr = data->programs; program_ptr != NULL; program_ptr = program_ptr->next ) {
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nkeynes@1207 | 443 | program_t program = program_ptr->data;
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nkeynes@1208 | 444 | fprintf( f, "\nstatic void glsl_cleanup_%s() {\n", program->name );
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nkeynes@1208 | 445 | for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
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nkeynes@1208 | 446 | variable_t var = var_ptr->data;
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nkeynes@1208 | 447 | if( !var->uniform ) {
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nkeynes@1208 | 448 | fprintf( f, " glsl_disable_attrib(var_%s_%s_loc);\n", program->name, var->name );
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nkeynes@1208 | 449 | }
|
nkeynes@1208 | 450 | }
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nkeynes@1208 | 451 | fprintf( f, "}\n");
|
nkeynes@1208 | 452 |
|
nkeynes@1208 | 453 | fprintf( f, "\nvoid glsl_use_%s() {\n", program->name );
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nkeynes@1208 | 454 | fprintf( f, " glsl_use_program(prog_%s_id);\n", program->name );
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nkeynes@1229 | 455 | fprintf( f, " glsl_set_cleanup_fn(glsl_cleanup_%s);\n", program->name );
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nkeynes@1208 | 456 | for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
|
nkeynes@1208 | 457 | variable_t var = var_ptr->data;
|
nkeynes@1208 | 458 | if( !var->uniform ) {
|
nkeynes@1208 | 459 | fprintf( f, " glsl_enable_attrib(var_%s_%s_loc);\n", program->name, var->name );
|
nkeynes@1208 | 460 | }
|
nkeynes@1208 | 461 | }
|
nkeynes@1208 | 462 | fprintf( f, "}\n");
|
nkeynes@1208 | 463 |
|
nkeynes@1207 | 464 |
|
nkeynes@1207 | 465 | for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
|
nkeynes@1207 | 466 | variable_t var = var_ptr->data;
|
nkeynes@1207 | 467 | if( var->uniform ) {
|
nkeynes@1207 | 468 | 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 | 469 | fprintf( f, " glsl_set_uniform_%s(var_%s_%s_loc,value);\n}\n", var->type, program->name, var->name );
|
nkeynes@1207 | 470 | } else {
|
nkeynes@1207 | 471 | 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 | 472 | fprintf( f, " glsl_set_attrib_%s(var_%s_%s_loc,stride, ptr);\n}\n", var->type, program->name, var->name );
|
nkeynes@1209 | 473 | if( strcmp(var->type,"vec4") == 0 ) { /* Special case to load vec3 arrays into a vec4 */
|
nkeynes@1209 | 474 | 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 | 475 | fprintf( f, " glsl_set_attrib_vec3(var_%s_%s_loc,stride, ptr);\n}\n", program->name, var->name );
|
nkeynes@1240 | 476 | fprintf( f, "void glsl_set_%s_%s_vec2_pointer(%s ptr, GLsizei stride){ /* attribute %s %s */ \n", program->name, var->name, getCType(var->type,var->uniform), var->type, var->name);
|
nkeynes@1240 | 477 | fprintf( f, " glsl_set_attrib_vec2(var_%s_%s_loc,stride, ptr);\n}\n", program->name, var->name );
|
nkeynes@1209 | 478 | }
|
nkeynes@1207 | 479 | }
|
nkeynes@1207 | 480 | }
|
nkeynes@1207 | 481 | }
|
nkeynes@1207 | 482 |
|
nkeynes@1258 | 483 | fprintf( f, "\nvoid glsl_clear_shader() {\n" );
|
nkeynes@1258 | 484 | fprintf( f, " glsl_run_cleanup_fn();\n glsl_use_program(0);\n}\n" );
|
nkeynes@1258 | 485 |
|
nkeynes@1207 | 486 | fprintf( f, "\nstatic void glsl_init_programs( gl_program_t *ids ) {\n" );
|
nkeynes@1207 | 487 | for( program_ptr = data->programs, i=0; program_ptr != NULL; program_ptr = program_ptr->next, i++ ) {
|
nkeynes@1207 | 488 | program_t program = program_ptr->data;
|
nkeynes@1207 | 489 |
|
nkeynes@1207 | 490 | fprintf( f, " prog_%s_id = ids[%d];\n\n", program->name, i );
|
nkeynes@1207 | 491 | for( var_ptr = program->variables; var_ptr != NULL; var_ptr = var_ptr->next ) {
|
nkeynes@1207 | 492 | variable_t var = var_ptr->data;
|
nkeynes@1207 | 493 | if( var->uniform ) {
|
nkeynes@1207 | 494 | 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 | 495 | } else {
|
nkeynes@1207 | 496 | 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 | 497 | }
|
nkeynes@1207 | 498 | }
|
nkeynes@1207 | 499 | }
|
nkeynes@1258 | 500 |
|
nkeynes@1207 | 501 | fprintf( f, "}\n" );
|
nkeynes@1207 | 502 |
|
nkeynes@1130 | 503 | fclose(f);
|
nkeynes@1130 | 504 | }
|
nkeynes@1130 | 505 |
|
nkeynes@1234 | 506 | static const char *makeExtension(const char *basename, const char *ext)
|
nkeynes@1130 | 507 | {
|
nkeynes@1130 | 508 | const char *oldext = strrchr(basename, '.');
|
nkeynes@1130 | 509 | if( oldext == NULL ) {
|
nkeynes@1130 | 510 | return g_strdup_printf("%s%s", basename, ext);
|
nkeynes@1130 | 511 | } else {
|
nkeynes@1169 | 512 | return g_strdup_printf("%.*s%s", (int)(oldext-basename), basename, ext);
|
nkeynes@405 | 513 | }
|
nkeynes@405 | 514 | }
|
nkeynes@405 | 515 |
|
nkeynes@1235 | 516 | static char *option_list = "hi:I:D:U:o:";
|
nkeynes@1234 | 517 | static struct option long_option_list[] = {
|
nkeynes@1234 | 518 | { "help", no_argument, NULL, 'h' },
|
nkeynes@1235 | 519 | { "interface", required_argument, NULL, 'i' },
|
nkeynes@1234 | 520 | { "output", required_argument, NULL, 'o' },
|
nkeynes@1234 | 521 | { NULL, 0, 0, 0 } };
|
nkeynes@1234 | 522 |
|
nkeynes@1234 | 523 | static void usage() {
|
nkeynes@1234 | 524 | fprintf( stderr, "Usage: genglsl <glsl-source-list> [-o output.def] [-i output.h]\n");
|
nkeynes@1234 | 525 | }
|
nkeynes@405 | 526 | int main( int argc, char *argv[] )
|
nkeynes@405 | 527 | {
|
nkeynes@1234 | 528 | const char *output_file = NULL;
|
nkeynes@1234 | 529 | const char *iface_file = NULL;
|
nkeynes@1235 | 530 | GList *cpp_opts = NULL;
|
nkeynes@1234 | 531 | int opt;
|
nkeynes@1234 | 532 |
|
nkeynes@1234 | 533 | while( (opt = getopt_long( argc, argv, option_list, long_option_list, NULL )) != -1 ) {
|
nkeynes@1234 | 534 | switch( opt ) {
|
nkeynes@1234 | 535 | case 'h':
|
nkeynes@1234 | 536 | usage();
|
nkeynes@1234 | 537 | exit(0);
|
nkeynes@1234 | 538 | break;
|
nkeynes@1235 | 539 | case 'D': case 'I': case 'U':
|
nkeynes@1235 | 540 | cpp_opts = g_list_append(cpp_opts, g_strdup_printf( "-%c%s", opt, optarg ));
|
nkeynes@1235 | 541 | break;
|
nkeynes@1234 | 542 | case 'i':
|
nkeynes@1234 | 543 | if( iface_file != NULL ) {
|
nkeynes@1234 | 544 | fprintf( stderr, "Error: at most one interface file can be supplied\n" );
|
nkeynes@1234 | 545 | usage();
|
nkeynes@1234 | 546 | exit(1);
|
nkeynes@1234 | 547 | }
|
nkeynes@1234 | 548 | iface_file = optarg;
|
nkeynes@1234 | 549 | break;
|
nkeynes@1234 | 550 | case 'o':
|
nkeynes@1234 | 551 | if( output_file != NULL ) {
|
nkeynes@1234 | 552 | fprintf( stderr, "Error: at most one output file can be supplied\n" );
|
nkeynes@1234 | 553 | usage();
|
nkeynes@1234 | 554 | exit(1);
|
nkeynes@1234 | 555 | }
|
nkeynes@1234 | 556 | output_file = optarg;
|
nkeynes@1234 | 557 | }
|
nkeynes@1234 | 558 | }
|
nkeynes@1234 | 559 |
|
nkeynes@1234 | 560 | if( optind == argc ) {
|
nkeynes@1234 | 561 | usage();
|
nkeynes@736 | 562 | exit(1);
|
nkeynes@405 | 563 | }
|
nkeynes@405 | 564 |
|
nkeynes@1234 | 565 | if( output_file == NULL ) {
|
nkeynes@1234 | 566 | output_file = makeExtension(argv[optind], ".def");
|
nkeynes@1234 | 567 | }
|
nkeynes@1234 | 568 | if( iface_file == NULL ) {
|
nkeynes@1234 | 569 | iface_file = makeExtension(output_file, ".h");
|
nkeynes@405 | 570 | }
|
nkeynes@405 | 571 |
|
nkeynes@1235 | 572 | atexit(cleanup_tempfiles);
|
nkeynes@1234 | 573 | glsldata_t data = g_malloc0(sizeof(struct glsldata));
|
nkeynes@1234 | 574 | while( optind < argc ) {
|
nkeynes@1235 | 575 | readInput(argv[optind++], cpp_opts, data);
|
nkeynes@405 | 576 | }
|
nkeynes@1234 | 577 | linkPrograms(data);
|
nkeynes@405 | 578 |
|
nkeynes@1234 | 579 | writeSource( output_file, data );
|
nkeynes@1234 | 580 | writeInterface( iface_file, data );
|
nkeynes@405 | 581 | return 0;
|
nkeynes@405 | 582 | }
|