material.cpp

   1 #include "material.hpp"
   2 #include "image.hpp"
   3
   4 Material::Material(const aiMaterial &ai, GLuint progId): progId(progId) {
   5         aiString path;
   6         ai.GetTexture(aiTextureType_DIFFUSE, 1, &path);
   7         albedo = new Texture(std::string(path.C_Str()));
   8         path = "";
   9
  10         ai.GetTexture(aiTextureType_NORMALS, 0, &path);
  11         normal = new Texture(std::string(path.C_Str()));
  12         path = "";
  13
  14         ai.GetTexture(aiTextureType_UNKNOWN, 0, &path);
  15         metallicRoughness = new Texture(std::string(path.C_Str()));
  16         path = "";
  17
  18         ai.GetTexture(aiTextureType_LIGHTMAP, 0, &path);
  19         ambientOcclusion = new Texture(std::string(path.C_Str()));
  20 }
  21
  22 Material::Texture::Texture(const std::string &fileName) {
  23         glGenTextures(1, &texId);
  24         glBindTexture(GL_TEXTURE_2D, texId);
  25         Image img("models/" + fileName);
  26         glTexImage2D(GL_TEXTURE_2D, 0, img.internalFormat(), img.width(), img.height(), 0, img.format(), img.type(), img.data());
  27         glGenerateMipmap(GL_TEXTURE_2D);
  28 }
  29
  30 void Material::bind() const {
  31         glUniform1i(glGetUniformLocation(progId, "albedoMap"), 0);
  32         glActiveTexture(GL_TEXTURE0);
  33         glBindTexture(GL_TEXTURE_2D, albedo->texId);
  34
  35         glUniform1i(glGetUniformLocation(progId, "normalMap"), 1);
  36         glActiveTexture(GL_TEXTURE1);
  37         glBindTexture(GL_TEXTURE_2D, normal->texId);
  38
  39         glUniform1i(glGetUniformLocation(progId, "metallicRoughnessMap"), 2);
  40         glActiveTexture(GL_TEXTURE2);
  41         glBindTexture(GL_TEXTURE_2D, metallicRoughness->texId);
  42
  43         glUniform1i(glGetUniformLocation(progId, "aoMap"), 3);
  44         glActiveTexture(GL_TEXTURE3);
  45         glBindTexture(GL_TEXTURE_2D, ambientOcclusion->texId);
  46 }