eqemu

annotate src/material.cc @ 12:2656099aff12

find changesets by author, revision, files, or words in the commit message
added copyright notices and license
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 18 Jul 2014 07:04:21 +0300
parents e9ab4861536d
children
rev   line source
nuclear@12 1 /*
nuclear@12 2 eqemu - electronic queue system emulator
nuclear@12 3 Copyright (C) 2014 John Tsiombikas <nuclear@member.fsf.org>,
nuclear@12 4 Eleni-Maria Stea <eleni@mutantstargoat.com>
nuclear@12 5
nuclear@12 6 This program is free software: you can redistribute it and/or modify
nuclear@12 7 it under the terms of the GNU General Public License as published by
nuclear@12 8 the Free Software Foundation, either version 3 of the License, or
nuclear@12 9 (at your option) any later version.
nuclear@12 10
nuclear@12 11 This program is distributed in the hope that it will be useful,
nuclear@12 12 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@12 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@12 14 GNU General Public License for more details.
nuclear@12 15
nuclear@12 16 You should have received a copy of the GNU General Public License
nuclear@12 17 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@12 18 */
nuclear@5 19 #include <string.h>
nuclear@3 20 #include <GL/glew.h>
nuclear@5 21 #include <imago2.h>
nuclear@3 22 #include "material.h"
nuclear@3 23
nuclear@5 24 static const char *find_path(const char *fname);
nuclear@5 25
nuclear@3 26 Material::Material()
nuclear@4 27 : diffuse(1, 1, 1), specular(0, 0, 0)
nuclear@3 28 {
nuclear@3 29 shininess = 1.0;
nuclear@3 30 alpha = 1.0;
nuclear@5 31
nuclear@5 32 for(int i=0; i<NUM_TEXTURES; i++) {
nuclear@5 33 tex[i] = 0;
nuclear@5 34 tex_scale[i].x = tex_scale[i].y = 1.0f;
nuclear@5 35 }
nuclear@5 36 sdr = 0;
nuclear@3 37 }
nuclear@3 38
nuclear@3 39 void Material::setup() const
nuclear@3 40 {
nuclear@6 41 float amb[] = {ambient.x, ambient.y, ambient.z, 1.0};
nuclear@6 42 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, amb);
nuclear@6 43
nuclear@4 44 float col[] = {diffuse.x, diffuse.y, diffuse.z, alpha};
nuclear@6 45 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, col);
nuclear@3 46
nuclear@3 47 float spec[] = {specular.x, specular.y, specular.z, 1.0};
nuclear@3 48 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, spec);
nuclear@3 49
nuclear@3 50 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shininess > 128 ? 128 : shininess);
nuclear@5 51
nuclear@6 52 float emit[] = {emissive.x, emissive.y, emissive.z, 1.0};
nuclear@6 53 glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, emit);
nuclear@5 54
nuclear@6 55 int num_tex = 0;
nuclear@5 56 if(tex[TEX_DIFFUSE]) {
nuclear@6 57 glActiveTexture(GL_TEXTURE0 + num_tex++);
nuclear@5 58
nuclear@5 59 glMatrixMode(GL_TEXTURE);
nuclear@5 60 glLoadIdentity();
nuclear@5 61 glTranslatef(tex_offset[TEX_DIFFUSE].x, tex_offset[TEX_DIFFUSE].y, 0);
nuclear@5 62 glScalef(tex_scale[TEX_DIFFUSE].x, tex_scale[TEX_DIFFUSE].y, 1);
nuclear@5 63
nuclear@5 64 glBindTexture(GL_TEXTURE_2D, tex[TEX_DIFFUSE]);
nuclear@5 65 glEnable(GL_TEXTURE_2D);
nuclear@5 66
nuclear@6 67 glDisable(GL_TEXTURE_GEN_S);
nuclear@6 68 glDisable(GL_TEXTURE_GEN_T);
nuclear@6 69
nuclear@6 70 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
nuclear@5 71 }
nuclear@6 72
nuclear@5 73 if(tex[TEX_ENVMAP]) {
nuclear@6 74 glActiveTexture(GL_TEXTURE0 + num_tex++);
nuclear@5 75
nuclear@5 76 glMatrixMode(GL_TEXTURE);
nuclear@5 77 glLoadIdentity();
nuclear@5 78 glTranslatef(tex_offset[TEX_ENVMAP].x, tex_offset[TEX_ENVMAP].y, 0);
nuclear@5 79 glScalef(tex_scale[TEX_ENVMAP].x, tex_scale[TEX_ENVMAP].y, 1);
nuclear@5 80
nuclear@5 81 glBindTexture(GL_TEXTURE_2D, tex[TEX_ENVMAP]);
nuclear@5 82 glEnable(GL_TEXTURE_2D);
nuclear@5 83
nuclear@5 84 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
nuclear@5 85 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
nuclear@5 86 glEnable(GL_TEXTURE_GEN_S);
nuclear@5 87 glEnable(GL_TEXTURE_GEN_T);
nuclear@5 88
nuclear@6 89 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
nuclear@6 90 }
nuclear@6 91
nuclear@6 92
nuclear@7 93 glMatrixMode(GL_TEXTURE);
nuclear@6 94 for(int i=num_tex; i<4; i++) {
nuclear@6 95 glActiveTexture(GL_TEXTURE0 + i);
nuclear@6 96 glDisable(GL_TEXTURE_2D);
nuclear@7 97 glLoadIdentity();
nuclear@5 98 }
nuclear@5 99
nuclear@5 100 glActiveTexture(GL_TEXTURE0);
nuclear@5 101 glMatrixMode(GL_MODELVIEW);
nuclear@3 102 }
nuclear@5 103
nuclear@5 104 unsigned int load_texture(const char *fname)
nuclear@5 105 {
nuclear@5 106 int xsz, ysz;
nuclear@5 107 void *pixels;
nuclear@5 108 unsigned int tex;
nuclear@5 109
nuclear@5 110 const char *path = find_path(fname);
nuclear@5 111
nuclear@5 112 if(!(pixels = img_load_pixels(path, &xsz, &ysz, IMG_FMT_RGBA32))) {
nuclear@5 113 fprintf(stderr, "failed to load texture: %s\n", fname);
nuclear@5 114 return 0;
nuclear@5 115 }
nuclear@5 116
nuclear@5 117 glGenTextures(1, &tex);
nuclear@5 118 glBindTexture(GL_TEXTURE_2D, tex);
nuclear@5 119 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@5 120 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@5 121 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
nuclear@5 122 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
nuclear@5 123 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, xsz, ysz, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
nuclear@5 124 img_free_pixels(pixels);
nuclear@5 125 return tex;
nuclear@5 126 }
nuclear@5 127
nuclear@5 128 static const char *find_path(const char *fname)
nuclear@5 129 {
nuclear@5 130 const char *ptr = fname + strlen(fname) - 1;
nuclear@5 131
nuclear@5 132 do {
nuclear@5 133 while(*ptr != '/' && ptr > fname - 1) {
nuclear@5 134 ptr--;
nuclear@5 135 }
nuclear@5 136
nuclear@5 137 FILE *fp = fopen(ptr + 1, "rb");
nuclear@5 138 if(fp) {
nuclear@5 139 fclose(fp);
nuclear@5 140 return ptr + 1;
nuclear@5 141 }
nuclear@5 142 ptr -= 1;
nuclear@5 143
nuclear@5 144 } while(ptr >= fname);
nuclear@5 145
nuclear@5 146 return fname;
nuclear@5 147 }