[gtk+] (18 commits) Created branch wip/baedert/gl

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/gl' was created.

Summary of new commits:

  e579eec... GskRenderer: Remove viewport property
  6d042d8... gl driver: Make some members const
  ea19ef6... gl renderer: Remove some unused code
  57e8c5e... Rework the GL renderer
  1fd1ca3... add tests/showrendernode
  442f43e... build: Remove unused variable
  1ed0f64... test-render-nodes: Print a warning if we didn't generate an
  af7f8f8... test-render-nodes: Add color matrix test
  9221887... GskGLDriver: Use float for texture size in create_texture
  afb30f2... testsuite: Add render node tests for simple color nodes
  31e89d5... GskGLDriver: Add profiler
  189a46f... gl renderer: save on some frame buffers
  fe7cc28... gl renderer: Implement rounded clip nodes
  3afdc3c... gl renderer: Don't create framebuffer for texture opacity c
  2ccfd90... gl renderer: Save clip in every node
  7c49fe5... showrendernode: Resize window to a reasonable size instead
  151da8c... test-render-nodes: Add transformed clip nodes test
  34de258... gl renderer: Remove unused shaders