material.cpp

   1 #include "material.hpp"
   2 #include <iostream>
   3 #include <CoreGraphics/CoreGraphics.h>
   4
   5 Material::Material(const aiMaterial &ai, GLuint progId): progId(progId) {
   6         if (ai.GetTextureCount(aiTextureType_DIFFUSE) > 0) {
   7                 aiString path;
   8                 ai.GetTexture(aiTextureType_DIFFUSE, 0, &path);
   9                 texture = new Texture(std::string(path.C_Str()));
  10         }
  11         ai.Get(AI_MATKEY_SHININESS, shininess);
  12         ai.Get(AI_MATKEY_COLOR_AMBIENT, ambient);
  13         ai.Get(AI_MATKEY_COLOR_DIFFUSE, diffuse);
  14         ai.Get(AI_MATKEY_COLOR_SPECULAR, specular);
  15 }
  16
  17 Material::Texture::Texture(const std::string &path) {
  18         auto provider = CGDataProviderCreateWithFilename(path.c_str());
  19         auto ref = CGImageCreateWithJPEGDataProvider(provider, nullptr, false, kCGRenderingIntentDefault);
  20         auto dataRef = CGDataProviderCopyData(CGImageGetDataProvider(ref));
  21         auto img = (unsigned char*) CFDataGetBytePtr(dataRef);
  22
  23         glGenTextures(1, &texId);
  24         glBindTexture(GL_TEXTURE_2D, texId);
  25         auto width = CGImageGetWidth(ref), height = CGImageGetHeight(ref);
  26         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, img);
  27         glGenerateMipmap(GL_TEXTURE_2D);
  28
  29         CGImageRelease(ref);
  30         CFRelease(dataRef);
  31 }
  32
  33 void Material::bind() const {
  34         glUniform3f(glGetUniformLocation(progId, "material.ambient"), ambient.r, ambient.g, ambient.b);
  35         glUniform3f(glGetUniformLocation(progId, "material.diffuse"), diffuse.r, diffuse.g, diffuse.b);
  36         glUniform3f(glGetUniformLocation(progId, "material.specular"), specular.r, specular.g, specular.b);
  37         glUniform1f(glGetUniformLocation(progId, "material.shininess"), shininess);
  38         glUniform1i(glGetUniformLocation(progId, "material.hasTexture"), texture != nullptr);
  39
  40         if (texture)
  41                 glBindTexture(GL_TEXTURE_2D, texture->texId);
  42 }