fix: grayscale textures

JulioJPinto · May 23, 2024 · 452796b · 452796b
1 parent bdf34e8
commit 452796b
Showing 1 changed file with 3 additions and 23 deletions.
diff --git a/engine/src/model.cpp b/engine/src/model.cpp
@@ -118,7 +118,7 @@ bool Model::loadTexture() {
   // Load image data
   int width, height, num_channels;
   unsigned char* image_data = stbi_load(this->texture_filepath.data(), &width,
-                                        &height, &num_channels, 3);
+                                        &height, &num_channels, STBI_rgb);
 
   if (!image_data) {
     std::cerr << "Failed to load texture: " << this->texture_filepath
@@ -136,29 +136,9 @@ bool Model::loadTexture() {
                   GL_LINEAR_MIPMAP_LINEAR);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
-  // Determine the correct format
-  GLenum format;
-  switch (num_channels) {
-    case 1:
-      format = GL_RED;
-      break;
-    case 3:
-      format = GL_RGB;
-      break;
-    case 4:
-      format = GL_RGBA;
-      break;
-    default: {
-      // Free image data before returning
-      stbi_image_free(image_data);
-      std::cerr << "Unsupported number of channels: " << num_channels
-                << std::endl;
-      return false;
-    }
-  }
-
+  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
   // Upload data to GPU
-  glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format,
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB,
                GL_UNSIGNED_BYTE, image_data);
   glGenerateMipmap(GL_TEXTURE_2D);