Moved a bunch of code around

src/duskgl/display/texture/texturegl.c

@@ -0,0 +1,86 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "display/texture/texture.h"
+#include "assert/assert.h"
+#include "error/errorgl.h"
+
+errorret_t textureInitGL(
+  texturegl_t *texture,
+  const int32_t width,
+  const int32_t height,
+  const textureformatgl_t format,
+  const texturedata_t data
+) {
+  glGenTextures(1, &texture->id);
+  glBindTexture(GL_TEXTURE_2D, texture->id);
+  errorChain(errorGLCheck());
+
+  switch(format) {
+    case TEXTURE_FORMAT_RGBA:
+      glTexImage2D(
+        GL_TEXTURE_2D, 0, format, width, height, 0,
+        format, GL_UNSIGNED_BYTE, (void*)data.rgbaColors
+      );
+      break;
+
+    case TEXTURE_FORMAT_PALETTE:
+      assertNotNull(data.paletteData, "Palette texture data cannot be NULL");
+      glTexImage2D(
+        GL_TEXTURE_2D,
+        0, GL_COLOR_INDEX8_EXT,
+        width, height,
+        0, GL_COLOR_INDEX8_EXT,
+        GL_UNSIGNED_BYTE, (void*)data.paletteData
+      );
+      errorChain(errorGLCheck());
+
+      glColorTableEXT(
+        GL_TEXTURE_2D, GL_RGBA, data.palette.palette->colorCount, GL_RGBA,
+        GL_UNSIGNED_BYTE, (const void*)data.palette.palette->colors
+      );
+      break;
+
+    default:
+      assertUnreachable("Unknown texture format");
+      break;
+  }
+  errorChain(errorGLCheck());
+
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+  errorChain(errorGLCheck());
+  
+  glBindTexture(GL_TEXTURE_2D, 0);
+  errorChain(errorGLCheck());
+
+  errorOk();
+}
+
+errorret_t textureBindGL(texturegl_t *texture) {
+  if(texture == NULL) {
+    glBindTexture(GL_TEXTURE_2D, 0);
+    errorChain(errorGLCheck());
+    errorOk();
+  }
+
+  assertTrue(texture->id != 0, "Texture ID must be valid");
+  glBindTexture(GL_TEXTURE_2D, texture->id);
+  errorChain(errorGLCheck());
+  errorOk();
+}
+
+errorret_t textureDisposeGL(texturegl_t *texture) {
+  assertNotNull(texture, "Texture cannot be NULL");
+  assertTrue(texture->id != 0, "Texture ID must be valid");
+
+  glDeleteTextures(1, &texture->id);
+  errorChain(errorGLCheck());
+  errorOk();
+}