Merge branch 'master' into active-fcurve-keyframe

1 files changed, 97 insertions, 0 deletions

diff --git a/source/blender/gpu/opengl/gl_context.hh b/source/blender/gpu/opengl/gl_context.hh
new file mode 100644
index 00000000000..3b55965b9d1
--- /dev/null
+++ b/source/blender/gpu/opengl/gl_context.hh
@@ -0,0 +1,97 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright 2020, Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup gpu
+ */
+
+#pragma once
+
+#include "gpu_context_private.hh"
+
+#include "BLI_set.hh"
+#include "BLI_vector.hh"
+
+#include "glew-mx.h"
+
+#include <iostream>
+#include <mutex>
+#include <unordered_set>
+#include <vector>
+
+namespace blender {
+namespace gpu {
+
+class GLSharedOrphanLists {
+ public:
+  /** Mutex for the bellow structures. */
+  std::mutex lists_mutex;
+  /** Buffers and textures are shared across context. Any context can free them. */
+  Vector<GLuint> textures;
+  Vector<GLuint> buffers;
+
+ public:
+  void orphans_clear(void);
+};
+
+class GLContext : public GPUContext {
+  /* TODO(fclem) these needs to become private. */
+ public:
+  /** Default VAO for procedural draw calls. */
+  GLuint default_vao_;
+  /** Default framebuffer object for some GL implementation. */
+  GLuint default_framebuffer_;
+  /** VBO for missing vertex attrib binding. Avoid undefined behavior on some implementation. */
+  GLuint default_attr_vbo_;
+  /**
+   * GPUBatch & GPUFramebuffer have references to the context they are from, in the case the
+   * context is destroyed, we need to remove any reference to it.
+   */
+  Set<GPUBatch *> batches_;
+  Set<GPUFrameBuffer *> framebuffers_;
+  /** Mutex for the bellow structures. */
+  std::mutex lists_mutex_;
+  /** VertexArrays and framebuffers are not shared across context. */
+  Vector<GLuint> orphaned_vertarrays_;
+  Vector<GLuint> orphaned_framebuffers_;
+  /** GLBackend onws this data. */
+  GLSharedOrphanLists &shared_orphan_list_;
+
+ public:
+  GLContext(void *ghost_window, GLSharedOrphanLists &shared_orphan_list);
+  ~GLContext();
+
+  void activate(void) override;
+  void deactivate(void) override;
+
+  /* TODO(fclem) these needs to become private. */
+ public:
+  void orphans_add(Vector<GLuint> &orphan_list, std::mutex &list_mutex, GLuint id);
+  void orphans_clear(void);
+
+  void vao_free(GLuint vao_id);
+  void fbo_free(GLuint fbo_id);
+  void batch_register(struct GPUBatch *batch);
+  void batch_unregister(struct GPUBatch *batch);
+  void framebuffer_register(struct GPUFrameBuffer *fb);
+  void framebuffer_unregister(struct GPUFrameBuffer *fb);
+};
+
+}  // namespace gpu
+}  // namespace blender