Moved a bunch of code around

src/duskgl/display/texture/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2026 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_LIBRARY_TARGET_NAME}
+  PUBLIC
+    texturegl.c
+)

src/duskgl/display/texture/texturegl.c

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+/**
+ * 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();
+}

src/duskgl/display/texture/texturegl.h

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+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+typedef union texturedata_u texturedata_t;
+
+typedef enum {
+  TEXTURE_FORMAT_RGBA = GL_RGBA,
+  TEXTURE_FORMAT_PALETTE = GL_COLOR_INDEX8_EXT,
+} textureformatgl_t;
+
+typedef struct {
+  GLuint id;
+  textureformatgl_t format;
+  int32_t width;
+  int32_t height;
+} texturegl_t;
+
+/**
+ * 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.
+ * @return An error if the texture failed to initialize, otherwise success.
+ */
+errorret_t textureInitGL(
+  texturegl_t *texture,
+  const int32_t width,
+  const int32_t height,
+  const textureformatgl_t format,
+  const texturedata_t data
+);
+
+/**
+ * Binds a texture for rendering. Providing NULL will unbind any texture.
+ * 
+ * @param texture The texture to bind.
+ * @return An error if the texture failed to bind, otherwise success.
+ */
+errorret_t textureBindGL(texturegl_t *texture);
+
+/**
+ * Disposes a texture.
+ * 
+ * @param texture The texture to dispose.
+ * @return An error if the texture failed to dispose, otherwise success.
+ */
+errorret_t textureDisposeGL(texturegl_t *texture);

src/duskgl/display/texture/textureplatform.h

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+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/texture/texturegl.h"
+
+typedef textureformatgl_t textureformatplatform_t;
+typedef texturegl_t textureplatform_t;
+
+#define textureInitPlatform textureInitGL
+#define textureBindPlatform textureBindGL
+#define textureDisposePlatform textureDisposeGL