[gtk+] (21 commits) Non-fast-forward update to branch wip/otte/vulkan

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/vulkan' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  c56dfb8... vulkan: Initial support
  d56e4cb... gdk: Add more infrastructure
  75f7586... gdk: Add GdkDrawContext
  0cff04a... gdk: Turn GdkGLContext into a GdkDrawContext
  8eb6a46... vulkan: Turn GdkVulkanContext into a GdkDrawContext
  a3791c7... vulkan: More work on GdkVulkanContext
  3b0acee... cssgadget: Compute relative to own allocation, not widget a
  fd1285e... gsk: Change GSK_USE_SOFTWARE env var to GSK_RENDERER
  c1d7f40... x11: Call gdk_display_sync() when creating Vulkan surfaces
  f005aea... gdk: Add GDK_VULKAN env variable
  7518477... vulkan: Register debug handler
  0d8d994... gsk: Add skeleton for Vulkan renderer
  593b835... vulkan: Expose the swapchain images in public API
  e0eff06... gsk: Add a vulkan debug category
  eb44258... gskvulkanrenderer: Create imagevies and framebuffers
  ee5deec... gskvulkan: Create render pass and command pool
  0d13581... gskrenderer: Add gsk_renderer_begin_draw_frame()
  0324dd2... glrenderer: Always redraw the whole screen
  30d81ee... inspector: Pass the drawing context into the recorder

Commits added to the branch:

  78efc46... vulkan: Initial support
  0951b75... gdk: Add more infrastructure
  cfd59e9... gdk: Add GdkDrawContext
  fa0326d... gdk: Turn GdkGLContext into a GdkDrawContext
  2496628... vulkan: Turn GdkVulkanContext into a GdkDrawContext
  6a63654... vulkan: More work on GdkVulkanContext
  7bc8db6... cssgadget: Compute relative to own allocation, not widget a
  b54c70d... gsk: Change GSK_USE_SOFTWARE env var to GSK_RENDERER
  ced8813... x11: Call gdk_display_sync() when creating Vulkan surfaces
  fd802c4... gdk: Add GDK_VULKAN env variable
  fa5d3b6... vulkan: Register debug handler
  717623a... gsk: Add skeleton for Vulkan renderer
  8c5164f... vulkan: Expose the swapchain images in public API
  e34cce7... gsk: Add a vulkan debug category
  8b81082... gskvulkanrenderer: Create imagevies and framebuffers
  9d95112... gskvulkan: Create render pass and command pool
  18869d9... gskrenderer: Add gsk_renderer_begin_draw_frame()
  e5bb3db... glrenderer: Always redraw the whole screen
  d317973... inspector: Pass the drawing context into the recorder
  826e623... gdk: Make gdk_window_begin_draw_frame() take a draw context
  363b5c4... vulkan: acquire/present images when drawing