material.cpp

   1 #include "material.hpp"
   2 #include "image.hpp"
   3
   4 Material::Material(const aiMaterial &ai, GLuint progId): progId(progId) {
   5         if (ai.GetTextureCount(aiTextureType_DIFFUSE) > 0) {
   6                 aiString path;
   7                 ai.GetTexture(aiTextureType_DIFFUSE, 0, &path);
   8                 diffuseMap = new Texture(std::string(path.C_Str()));
   9         }
  10
  11         if (ai.GetTextureCount(aiTextureType_SPECULAR) > 0) {
  12                 aiString path;
  13                 ai.GetTexture(aiTextureType_SPECULAR, 0, &path);
  14                 specularMap = new Texture(std::string(path.C_Str()));
  15         }
  16
  17         if (ai.GetTextureCount(aiTextureType_NORMALS) > 0) {
  18                 aiString path;
  19                 ai.GetTexture(aiTextureType_NORMALS, 0, &path);
  20                 normalMap = new Texture(std::string(path.C_Str()));
  21         }
  22         ai.Get(AI_MATKEY_SHININESS, shininess);
  23         ai.Get(AI_MATKEY_REFLECTIVITY, reflectivity);
  24         ai.Get(AI_MATKEY_REFRACTI, refractiveIndex);
  25         ai.Get(AI_MATKEY_OPACITY, opacity);
  26
  27         ai.Get(AI_MATKEY_COLOR_AMBIENT, ambient);
  28         ai.Get(AI_MATKEY_COLOR_DIFFUSE, diffuse);
  29         ai.Get(AI_MATKEY_COLOR_SPECULAR, specular);
  30 }
  31
  32 Material::Texture::Texture(const std::string &fileName) {
  33         glGenTextures(1, &texId);
  34         glBindTexture(GL_TEXTURE_2D, texId);
  35         Image img("models/" + fileName);
  36         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, img.width(), img.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, img.data());
  37         glGenerateMipmap(GL_TEXTURE_2D);
  38 }
  39
  40 void Material::bind() const {
  41         glUniform4f(glGetUniformLocation(progId, "material.ambient"), ambient.r, ambient.g, ambient.b, ambient.a);
  42         glUniform4f(glGetUniformLocation(progId, "material.diffuse"), diffuse.r, diffuse.g, diffuse.b, diffuse.a);
  43         glUniform4f(glGetUniformLocation(progId, "material.specular"), specular.r, specular.g, specular.b, specular.a);
  44         glUniform1f(glGetUniformLocation(progId, "material.shininess"), shininess);
  45         glUniform1f(glGetUniformLocation(progId, "material.reflectivity"), reflectivity);
  46         glUniform1f(glGetUniformLocation(progId, "material.refractiveIndex"), refractiveIndex);
  47         glUniform1f(glGetUniformLocation(progId, "material.opacity"), opacity);
  48
  49         glUniform1i(glGetUniformLocation(progId, "material.hasTexture"), diffuseMap != nullptr);
  50         glUniform1i(glGetUniformLocation(progId, "material.hasSpecularMap"), specularMap != nullptr);
  51         glUniform1i(glGetUniformLocation(progId, "material.hasNormalMap"), normalMap != nullptr);
  52
  53         glUniform1i(glGetUniformLocation(progId, "material.diffuseMap"), 2);
  54         glActiveTexture(GL_TEXTURE2);
  55         if (diffuseMap) glBindTexture(GL_TEXTURE_2D, diffuseMap->texId);
  56
  57         glUniform1i(glGetUniformLocation(progId, "material.specularMap"), 3);
  58         glActiveTexture(GL_TEXTURE3);
  59         if (specularMap) glBindTexture(GL_TEXTURE_2D, specularMap->texId);
  60
  61         glUniform1i(glGetUniformLocation(progId, "material.normalMap"), 4);
  62         glActiveTexture(GL_TEXTURE4);
  63         if (normalMap) glBindTexture(GL_TEXTURE_2D, normalMap->texId);
  64 }