archivemuh

archive/dusksdl2/display/framebuffer/CMakeLists.txt

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+# Copyright (c) 2025 Dominic Masters
+#
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_TARGET_NAME}
+  PRIVATE
+    framebuffer.c
+)

archive/dusksdl2/display/framebuffer/framebuffer.c

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+/**
+ * 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"
+
+#if RENDER_USE_FRAMEBUFFER
+  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, GL_RGBA, NULL);
+
+    // Generate the framebuffer object using EXT
+    glGenFramebuffersEXT(1, &framebuffer->id);
+    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer->id);
+
+    // Attach the texture to the framebuffer
+    glFramebufferTexture2DEXT(
+      GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+      GL_TEXTURE_2D, framebuffer->texture.id, 0
+    );
+
+    // Check if the framebuffer is complete
+    if(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      assertUnreachable("Framebuffer is not complete");
+    }
+
+    // Unbind the framebuffer
+    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+  }
+
+  void frameBufferBind(const framebuffer_t *framebuffer) {
+    if(framebuffer == NULL) {
+      glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+      return;
+    }
+
+    // Bind the framebuffer for rendering
+    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer->id);
+  }
+
+  void frameBufferDispose(framebuffer_t *framebuffer) {
+    assertNotNull(framebuffer, "Framebuffer cannot be NULL");
+
+    glDeleteFramebuffersEXT(1, &framebuffer->id);
+    textureDispose(&framebuffer->texture);
+  }
+#endif

archive/dusksdl2/display/framebuffer/framebuffer.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/render.h"
+#include "display/texture/texture.h"
+
+#if RENDER_USE_FRAMEBUFFER
+  typedef struct {
+    GLuint id;
+    texture_t texture;
+  } framebuffer_t;
+
+  /**
+   * Initializes a framebuffer using EXT methods.
+   * 
+   * @param framebuffer The framebuffer to initialize.
+   * @param width The width of the framebuffer.
+   * @param height The height of the framebuffer.
+   * @return An error code indicating success or failure.
+   */
+  void frameBufferInit(
+    framebuffer_t *framebuffer,
+    const uint32_t width,
+    const uint32_t height
+  );
+
+  /**
+   * Binds the framebuffer for rendering using EXT methods.
+   * 
+   * @param framebuffer The framebuffer to bind, or NULL to unbind.
+   */
+  void frameBufferBind(const framebuffer_t *framebuffer);
+
+  /**
+   * Disposes of the framebuffer using EXT methods.
+   * 
+   * @param framebuffer The framebuffer to dispose of.
+   */
+  void frameBufferDispose(framebuffer_t *framebuffer);
+#endif