Framebuffer done.

src/dusksdl2/display/framebuffer/framebuffer.c

@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "framebuffer.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+void frameBufferInit(
+  framebuffer_t *framebuffer,
+  const uint32_t width,
+  const uint32_t height
+) {
+  assertNotNull(framebuffer, "Framebuffer cannot be NULL");
+  assertTrue(width > 0 && height > 0, "Width & height must be greater than 0");
+
+  memoryZero(framebuffer, sizeof(framebuffer_t));
+  textureInit(&framebuffer->texture, width, height, NULL);
+
+  // Generate the framebuffer object
+  glGenFramebuffers(1, &framebuffer->id);
+  glBindFramebuffer(GL_FRAMEBUFFER, framebuffer->id);
+
+  // Attach the texture to the framebuffer
+  glFramebufferTexture2D(
+    GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+    GL_TEXTURE_2D, framebuffer->texture.id, 0
+  );
+
+  // Check if the framebuffer is complete
+  if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+    assertUnreachable("Framebuffer is not complete");
+  }
+
+  // Unbind the framebuffer
+  glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+void frameBufferBind(const framebuffer_t *framebuffer) {
+  if(framebuffer == NULL) {
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+    return;
+  }
+
+  // Bind the framebuffer for rendering
+  glBindFramebuffer(GL_FRAMEBUFFER, framebuffer->id);
+}
+
+void frameBufferDispose(framebuffer_t *framebuffer) {
+  assertNotNull(framebuffer, "Framebuffer cannot be NULL");
+
+  glDeleteFramebuffers(1, &framebuffer->id);
+  textureDispose(&framebuffer->texture);
+}