eqemu

annotate src/material.cc @ 6:977bc1cb055b

find changesets by author, revision, files, or words in the commit message
almost done
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 18 Jul 2014 02:35:06 +0300
parents 9b5bb05ae53a
children e9ab4861536d
rev   line source
nuclear@5 1 #include <string.h>
nuclear@3 2 #include <GL/glew.h>
nuclear@5 3 #include <imago2.h>
nuclear@3 4 #include "material.h"
nuclear@3 5
nuclear@5 6 static const char *find_path(const char *fname);
nuclear@5 7
nuclear@3 8 Material::Material()
nuclear@4 9 : diffuse(1, 1, 1), specular(0, 0, 0)
nuclear@3 10 {
nuclear@3 11 shininess = 1.0;
nuclear@3 12 alpha = 1.0;
nuclear@5 13
nuclear@5 14 for(int i=0; i<NUM_TEXTURES; i++) {
nuclear@5 15 tex[i] = 0;
nuclear@5 16 tex_scale[i].x = tex_scale[i].y = 1.0f;
nuclear@5 17 }
nuclear@5 18 sdr = 0;
nuclear@3 19 }
nuclear@3 20
nuclear@3 21 void Material::setup() const
nuclear@3 22 {
nuclear@6 23 float amb[] = {ambient.x, ambient.y, ambient.z, 1.0};
nuclear@6 24 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, amb);
nuclear@6 25
nuclear@4 26 float col[] = {diffuse.x, diffuse.y, diffuse.z, alpha};
nuclear@6 27 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, col);
nuclear@3 28
nuclear@3 29 float spec[] = {specular.x, specular.y, specular.z, 1.0};
nuclear@3 30 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, spec);
nuclear@3 31
nuclear@3 32 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shininess > 128 ? 128 : shininess);
nuclear@5 33
nuclear@6 34 float emit[] = {emissive.x, emissive.y, emissive.z, 1.0};
nuclear@6 35 glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, emit);
nuclear@5 36
nuclear@6 37 int num_tex = 0;
nuclear@5 38 if(tex[TEX_DIFFUSE]) {
nuclear@6 39 glActiveTexture(GL_TEXTURE0 + num_tex++);
nuclear@5 40
nuclear@5 41 glMatrixMode(GL_TEXTURE);
nuclear@5 42 glLoadIdentity();
nuclear@5 43 glTranslatef(tex_offset[TEX_DIFFUSE].x, tex_offset[TEX_DIFFUSE].y, 0);
nuclear@5 44 glScalef(tex_scale[TEX_DIFFUSE].x, tex_scale[TEX_DIFFUSE].y, 1);
nuclear@5 45
nuclear@5 46 glBindTexture(GL_TEXTURE_2D, tex[TEX_DIFFUSE]);
nuclear@5 47 glEnable(GL_TEXTURE_2D);
nuclear@5 48
nuclear@6 49 glDisable(GL_TEXTURE_GEN_S);
nuclear@6 50 glDisable(GL_TEXTURE_GEN_T);
nuclear@6 51
nuclear@6 52 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
nuclear@5 53 }
nuclear@6 54
nuclear@5 55 if(tex[TEX_ENVMAP]) {
nuclear@6 56 glActiveTexture(GL_TEXTURE0 + num_tex++);
nuclear@5 57
nuclear@5 58 glMatrixMode(GL_TEXTURE);
nuclear@5 59 glLoadIdentity();
nuclear@5 60 glTranslatef(tex_offset[TEX_ENVMAP].x, tex_offset[TEX_ENVMAP].y, 0);
nuclear@5 61 glScalef(tex_scale[TEX_ENVMAP].x, tex_scale[TEX_ENVMAP].y, 1);
nuclear@5 62
nuclear@5 63 glBindTexture(GL_TEXTURE_2D, tex[TEX_ENVMAP]);
nuclear@5 64 glEnable(GL_TEXTURE_2D);
nuclear@5 65
nuclear@5 66 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
nuclear@5 67 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
nuclear@5 68 glEnable(GL_TEXTURE_GEN_S);
nuclear@5 69 glEnable(GL_TEXTURE_GEN_T);
nuclear@5 70
nuclear@6 71 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
nuclear@6 72 }
nuclear@6 73
nuclear@6 74
nuclear@6 75 for(int i=num_tex; i<4; i++) {
nuclear@6 76 glActiveTexture(GL_TEXTURE0 + i);
nuclear@6 77 glDisable(GL_TEXTURE_2D);
nuclear@5 78 }
nuclear@5 79
nuclear@5 80 glActiveTexture(GL_TEXTURE0);
nuclear@5 81 glMatrixMode(GL_MODELVIEW);
nuclear@3 82 }
nuclear@5 83
nuclear@5 84 unsigned int load_texture(const char *fname)
nuclear@5 85 {
nuclear@5 86 int xsz, ysz;
nuclear@5 87 void *pixels;
nuclear@5 88 unsigned int tex;
nuclear@5 89
nuclear@5 90 const char *path = find_path(fname);
nuclear@5 91
nuclear@5 92 if(!(pixels = img_load_pixels(path, &xsz, &ysz, IMG_FMT_RGBA32))) {
nuclear@5 93 fprintf(stderr, "failed to load texture: %s\n", fname);
nuclear@5 94 return 0;
nuclear@5 95 }
nuclear@5 96
nuclear@5 97 glGenTextures(1, &tex);
nuclear@5 98 glBindTexture(GL_TEXTURE_2D, tex);
nuclear@5 99 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@5 100 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@5 101 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
nuclear@5 102 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
nuclear@5 103 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, xsz, ysz, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
nuclear@5 104 img_free_pixels(pixels);
nuclear@5 105 return tex;
nuclear@5 106 }
nuclear@5 107
nuclear@5 108 static const char *find_path(const char *fname)
nuclear@5 109 {
nuclear@5 110 const char *ptr = fname + strlen(fname) - 1;
nuclear@5 111
nuclear@5 112 do {
nuclear@5 113 while(*ptr != '/' && ptr > fname - 1) {
nuclear@5 114 ptr--;
nuclear@5 115 }
nuclear@5 116
nuclear@5 117 FILE *fp = fopen(ptr + 1, "rb");
nuclear@5 118 if(fp) {
nuclear@5 119 fclose(fp);
nuclear@5 120 return ptr + 1;
nuclear@5 121 }
nuclear@5 122 ptr -= 1;
nuclear@5 123
nuclear@5 124 } while(ptr >= fname);
nuclear@5 125
nuclear@5 126 return fname;
nuclear@5 127 }