1 files changed, 121 insertions, 0 deletions
diff --git a/src/texture.h b/src/texture.h
new file mode 100644
index 0000000..aed6057
--- /dev/null
+++ b/src/texture.h
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+#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,
+  TEXTURE_CHANNEL_ERROR,
+  N_TEXTURE_RESULTS };
+
+typedef struct {
+    unsigned int id;
+    enum {
+        GREY,
+        RGB,
+        RGBA,
+        DEPTH
+    } type;
+    int width;
+    int height;
+    int channels;
+} honey_texture;
+
+/** @brief Place the honey.texture bindings as a table on the stack. */
+void honey_setup_texture(lua_State* L);
+
+/** @brief Create a greyscale texture.
+ *
+ * @param[out] texture Pointer to the destination texture.
+ * @param[in] width The width in pixels of the texture to create.
+ * @param[in] height The height in pixels of the texture to create.
+ * @param[in] data The data to populate the texture with, or NULL to leave it unpopulated.
+ *
+ * @returns Nothing.
+ */
+void honey_texture_new_greyscale(honey_texture* texture,
+                                 int width, int height,
+                                 unsigned char* data);
+
+/** @brief Create an RGB texture.
+ *
+ * @param[out] texture Pointer to the destination texture.
+ * @param[in] width The width in pixels of the texture to create.
+ * @param[in] height The height in pixels of the texture to create.
+ * @param[in] data The data to populate the texture with, or NULL to leave it unpopulated.
+ *
+ * @returns Nothing.
+ */
+void honey_texture_new_rgb(honey_texture* texture,
+                           int width, int height,
+                           unsigned char* data);
+
+/** @brief Create an RGBA texture.
+ *
+ * @param[out] texture Pointer to the destination texture.
+ * @param[in] width The width in pixels of the texture to create.
+ * @param[in] height The height in pixels of the texture to create.
+ * @param[in] data The data to populate the texture with, or NULL to leave it unpopulated.
+ *
+ * @returns Nothing.
+ */
+void honey_texture_new_rgba(honey_texture* texture,
+                            int width, int height,
+                            unsigned char* data);
+
+/** @brief Create a depth texture.
+ *
+ * @param[out] texture Pointer to the destination texture.
+ * @param[in] width The width in pixels of the texture to create.
+ * @param[in] height The height in pixels of the texture to create.
+ * @param[in] data The data to populate the texture with, or NULL to leave it unpopulated.
+ *
+ * @returns Nothing.
+ */
+void honey_texture_new_depth(honey_texture* texture,
+                             int width, int height,
+                             float* data);
+
+/** @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_load(honey_texture* texture,
+                                             char* texture_path);
+
+/** @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);
+
+/** @brief Create a framebuffer object.
+ *
+ * You must specify at least one of draw and depth; otherwise, the framebuffer will
+ * be incomplete and fail.
+ *
+ * @param[out] destination Pointer to store the resulting OpenGL handle in.
+ * @param[in] draw Pointer to a texture to draw to.
+ * @param[in] depth Pointer to a depth texture.
+ * @param[in] width The width in pixels of the FBO.
+ * @param[in] height The height in pixels of the FBO.
+ *
+ * @returns Nothing.
+ */
+void honey_texture_framebuffer_object_new(unsigned int* destination,
+                                          honey_texture* draw,
+                                          honey_texture* depth,
+                                          int width, int height);
+
+#endif