GPUUniformBuf: GL backend isolation

This is in preparation of vulkan backend. We move all opengl
functionnalities behind an abstract class.

This also cleansup the "dynamic" ubo create and rename it to
`GPU_uniformbuf_from_list()`

Contains, no functional change.

Part of T68990 Vulkan support.

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/gpu/opengl/gl_backend.hh b/source/blender/gpu/opengl/gl_backend.hh
index 63a14af6612..0234c1a3f63 100644
--- a/source/blender/gpu/opengl/gl_backend.hh
+++ b/source/blender/gpu/opengl/gl_backend.hh
@@ -31,6 +31,7 @@
 #include "gl_context.hh"
 #include "gl_drawlist.hh"
 #include "gl_shader.hh"
+#include "gl_uniform_buffer.hh"
 
 namespace blender {
 namespace gpu {
@@ -40,6 +41,11 @@ class GLBackend : public GPUBackend {
   GLSharedOrphanLists shared_orphan_list_;
 
  public:
+  static GLBackend *get(void)
+  {
+    return static_cast<GLBackend *>(GPUBackend::get());
+  }
+
   GPUContext *context_alloc(void *ghost_window)
   {
     return new GLContext(ghost_window, shared_orphan_list_);
@@ -60,6 +66,11 @@ class GLBackend : public GPUBackend {
     return new GLShader(name);
   };
 
+  UniformBuf *uniformbuf_alloc(int size, const char *name)
+  {
+    return new GLUniformBuf(size, name);
+  };
+
   /* TODO remove */
   void buf_free(GLuint buf_id);
   void tex_free(GLuint tex_id);