Refator pass 1

src/display/texture.h

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+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/color.h"
+#include "display/displaydefs.h"
+
+typedef enum {
+  #if DISPLAY_SDL2
+    TEXTURE_FORMAT_RGBA = GL_RGBA,
+    TEXTURE_FORMAT_ALPHA = GL_ALPHA,
+    TEXTURE_FORMAT_PALETTE = GL_COLOR_INDEX8_EXT,
+  #endif
+} textureformat_t;
+
+typedef struct {
+  #if DISPLAY_SDL2
+    GLuint id;
+  #endif
+
+  int32_t width;
+  int32_t height;
+} texture_t;
+
+typedef union {
+  struct {
+    color_t *colors;
+  } rgba;
+
+  struct {
+    uint8_t palette;
+    uint8_t *data;
+  } palette;
+
+  struct {
+    uint8_t *data;
+  } alpha;
+} texturedata_t;
+
+extern const texture_t *TEXTURE_BOUND;
+
+/**
+ * Initializes a texture.
+ * 
+ * @param texture The texture to initialize.
+ * @param width The width of the texture.
+ * @param height The height of the texture.
+ * @param format The format of the texture (e.g., GL_RGBA, GL_ALPHA).
+ * @param data The data for the texture, the format changes per format.
+ */
+void textureInit(
+  texture_t *texture,
+  const int32_t width,
+  const int32_t height,
+  const textureformat_t format,
+  const texturedata_t data
+);
+
+/**
+ * Binds a texture for rendering. Providing NULL will unbind any texture.
+ * 
+ * @param texture The texture to bind.
+ */
+void textureBind(const texture_t *texture);
+
+/**
+ * Disposes a texture.
+ * 
+ * @param texture The texture to dispose.
+ */
+void textureDispose(texture_t *texture);