GPU: Add GC to FBOs and UBOs and centralize all GCs

GPUFrameBuffers were being free when no context was attached or in the
wrong gl context. This make sure this does not happen again.

You can now safely free any gl resource from any thread (well as long as
it's not used anymore!).

1 files changed, 68 insertions, 0 deletions

diff --git a/source/blender/gpu/intern/gpu_context_private.h b/source/blender/gpu/intern/gpu_context_private.h
new file mode 100644
index 00000000000..4881a892e38
--- /dev/null
+++ b/source/blender/gpu/intern/gpu_context_private.h
@@ -0,0 +1,68 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2016 by Mike Erwin.
+ * All rights reserved.
+ *
+ * Contributor(s): Blender Foundation
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/gpu/intern/gpu_context_private.h
+ *  \ingroup gpu
+ *
+ * This interface allow GPU to manage GL objects for mutiple context and threads.
+ */
+
+#ifndef __GPU_CONTEXT_PRIVATE_H__
+#define __GPU_CONTEXT_PRIVATE_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "GPU_context.h"
+
+struct GPUFrameBuffer;
+
+GLuint GPU_vao_default(void);
+
+/* These require a gl ctx bound. */
+GLuint GPU_buf_alloc(void);
+GLuint GPU_tex_alloc(void);
+GLuint GPU_vao_alloc(void);
+GLuint GPU_fbo_alloc(void);
+
+/* These can be called any threads even without gl ctx. */
+void GPU_buf_free(GLuint buf_id);
+void GPU_tex_free(GLuint tex_id);
+/* These two need the ctx the id was created with. */
+void GPU_vao_free(GLuint vao_id, GPUContext *ctx);
+void GPU_fbo_free(GLuint fbo_id, GPUContext *ctx);
+
+void gpu_context_add_batch(GPUContext *ctx, GPUBatch *batch);
+void gpu_context_remove_batch(GPUContext *ctx, GPUBatch *batch);
+
+void gpu_context_add_framebuffer(GPUContext *ctx, struct GPUFrameBuffer *fb);
+void gpu_context_remove_framebuffer(GPUContext *ctx, struct GPUFrameBuffer *fb);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __GPU_CONTEXT_PRIVATE_H__ */