1 files changed, 8 insertions, 59 deletions

diff --git a/intern/cycles/blender/display_driver.h b/intern/cycles/blender/display_driver.h
index 66cfc8cffcc..b9773f5eadf 100644
--- a/intern/cycles/blender/display_driver.h
+++ b/intern/cycles/blender/display_driver.h
@@ -26,6 +26,7 @@
 
 #include "util/thread.h"
 #include "util/unique_ptr.h"
+#include "util/vector.h"
 
 CCL_NAMESPACE_BEGIN
 
@@ -112,6 +113,8 @@ class BlenderDisplayDriver : public DisplayDriver {
   void set_zoom(float zoom_x, float zoom_y);
 
  protected:
+  virtual void next_tile_begin() override;
+
   virtual bool update_begin(const Params &params, int texture_width, int texture_height) override;
   virtual void update_end() override;
 
@@ -128,27 +131,9 @@ class BlenderDisplayDriver : public DisplayDriver {
   void gl_context_disable();
   void gl_context_dispose();
 
-  /* Make sure texture is allocated and its initial configuration is performed. */
-  bool gl_texture_resources_ensure();
-
-  /* Ensure all runtime GPU resources needed for drawing are allocated.
-   * Returns true if all resources needed for drawing are available. */
-  bool gl_draw_resources_ensure();
-
   /* Destroy all GPU resources which are being used by this object. */
   void gl_resources_destroy();
 
-  /* Update GPU texture dimensions and content if needed (new pixel data was provided).
-   *
-   * NOTE: The texture needs to be bound. */
-  void texture_update_if_needed();
-
-  /* Update vertex buffer with new coordinates of vertex positions and texture coordinates.
-   * This buffer is used to render texture in the viewport.
-   *
-   * NOTE: The buffer needs to be bound. */
-  void vertex_buffer_update(const Params &params);
-
   BL::RenderEngine b_engine_;
 
   /* OpenGL context which is used the render engine doesn't have its own. */
@@ -159,50 +144,14 @@ class BlenderDisplayDriver : public DisplayDriver {
   /* Mutex used to guard the `gl_context_`. */
   thread_mutex gl_context_mutex_;
 
-  /* Texture which contains pixels of the render result. */
-  struct {
-    /* Indicates whether texture creation was attempted and succeeded.
-     * Used to avoid multiple attempts of texture creation on GPU issues or GPU context
-     * misconfiguration. */
-    bool creation_attempted = false;
-    bool is_created = false;
-
-    /* OpenGL resource IDs of the texture itself and Pixel Buffer Object (PBO) used to write
-     * pixels to it.
-     *
-     * NOTE: Allocated on the engine's context. */
-    uint gl_id = 0;
-    uint gl_pbo_id = 0;
-
-    /* Is true when new data was written to the PBO, meaning, the texture might need to be resized
-     * and new data is to be uploaded to the GPU. */
-    bool need_update = false;
-
-    /* Content of the texture is to be filled with zeroes. */
-    std::atomic<bool> need_clear = true;
-
-    /* Dimensions of the texture in pixels. */
-    int width = 0;
-    int height = 0;
-
-    /* Dimensions of the underlying PBO. */
-    int buffer_width = 0;
-    int buffer_height = 0;
-
-    /* Display parameters the texture has been updated for. */
-    Params params;
-  } texture_;
+  /* Content of the display is to be filled with zeroes. */
+  std::atomic<bool> need_clear_ = true;
 
   unique_ptr<BlenderDisplayShader> display_shader_;
 
-  /* Special track of whether GPU resources were attempted to be created, to avoid attempts of
-   * their re-creation on failure on every redraw. */
-  bool gl_draw_resource_creation_attempted_ = false;
-  bool gl_draw_resources_created_ = false;
-
-  /* Vertex buffer which hold vertices of a triangle fan which is textures with the texture
-   * holding the render result. */
-  uint vertex_buffer_ = 0;
+  /* Opaque storage for an internal state and data for tiles. */
+  struct Tiles;
+  unique_ptr<Tiles> tiles_;
 
   void *gl_render_sync_ = nullptr;
   void *gl_upload_sync_ = nullptr;