From 41fa908dc15b522e53946a716f4f6c00520bd46f Mon Sep 17 00:00:00 2001
From: sanine-a <sanine.not@pm.me>
Date: Mon, 19 Oct 2020 05:35:06 -0500
Subject: add honey libraries back and reorganize directories

---
 src/texture/texture.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
 src/texture/texture.h | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 87 insertions(+)
 create mode 100644 src/texture/texture.c
 create mode 100644 src/texture/texture.h

(limited to 'src/texture')

diff --git a/src/texture/texture.c b/src/texture/texture.c
new file mode 100644
index 0000000..591ee11
--- /dev/null
+++ b/src/texture/texture.c
@@ -0,0 +1,45 @@
+#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_RGBA, 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;
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void honey_texture_use(honey_texture texture, int texture_unit) {
+  glActiveTexture(GL_TEXTURE0 + texture_unit);
+  glBindTexture(GL_TEXTURE_2D, texture.texture_id);
+}
diff --git a/src/texture/texture.h b/src/texture/texture.h
new file mode 100644
index 0000000..037d3d0
--- /dev/null
+++ b/src/texture/texture.h
@@ -0,0 +1,42 @@
+#ifndef HONEY_TEXTURE_H
+#define HONEY_TEXTURE_H
+
+/** @file texture.h
+ *
+ *@brief Defines the honey_texture struct and associated functions. 
+*/
+
+#include "../common.h"
+
+enum honey_texture_result {
+  TEXTURE_OK,
+  TEXTURE_FAILED,
+  N_TEXTURE_RESULTS };
+
+typedef struct {
+  unsigned int texture_id;
+  int width;
+  int height;
+  int channels;
+} honey_texture;
+
+/** @brief Load a texture from disk.
+ *
+ * @param[out] texture Pointer to the destination texture
+ * @param[in] texture_path Path to the location of the texture
+ * @param[in] alpha_channel Set to true if the target image contains an alpha channel
+ *
+ * @return Success or failure type
+ */
+enum honey_texture_result honey_texture_new(honey_texture* texture,
+                                            char* texture_path,
+                                            bool alpha_channel);
+
+/** @brief Load a texture into a texture unit.
+ *
+ * @param[in] texture The texture to use
+ * @param[in] texture_unit The texture unit to put the texture in
+ */
+void honey_texture_use(honey_texture texture, int texture_unit);
+
+#endif
-- 
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