add honey_texture

1 files changed, 38 insertions, 0 deletions

diff --git a/src/texture.c b/src/texture.c
new file mode 100644
index 0000000..b041b4f
--- /dev/null
+++ b/src/texture.c
@@ -0,0 +1,38 @@
+#include "include/texture.h"
+
+enum honey_texture_result honey_texture_new(honey_texture* texture,
+                                            char* texture_path,
+                                            bool alpha_channel) {
+  unsigned int texture_id;
+  glGenTextures(1, &texture_id);
+  glBindTexture(GL_TEXTURE_2D, texture_id);
+
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+  int width, height, channels;
+  unsigned char* image_data = stbi_load(texture_path, &width, &height, &channels, 0);
+  if (image_data == NULL) {
+    fprintf(stderr, "ERROR: failed to load '%s'\n", texture_path);
+    return TEXTURE_FAILED;
+  }
+
+  if (alpha_channel) {
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image_data);
+  }
+  else {
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image_data);
+  }
+
+  glGenerateMipmap(GL_TEXTURE_2D);
+  stbi_image_free(image_data);
+
+  (*texture).texture_id = texture_id;
+  (*texture).width = width;
+  (*texture).height = height;
+  (*texture).channels = channels;
+
+  return TEXTURE_OK;
+}