mutter/NEWS

Cogl 1.7.8                                                         2011-09-05

  • List of changes since Cogl 1.7.6

   » Getters for the display and renderer associated with context
   » Getter for the number of supported texture units during fragment
     processing. (ClutterGst needs to know this for example to know if GLSL
     based YUV->RGB color space conversion can be used.)
   » Optimizations for the GLSL codegen for fragment processing so we can
     ignore redundant layers - if for example the "REPLACE" function is used
     for layer N then computing anything for previous layers is redundant. Also
     if texture combining needs to sample the same texture multiple times we
     now re-use the same sample instead of repeating it.
   » Optimize texture uploads to a texture atlas on GLES by avoiding lots of
     redundant format conversions.
   » Relax the requirement to need braces around blend factors when using the
     CoglBlendString syntax. Braces are only needed for factors involving a
     subtraction like "(1 - SRC_COLOR[A])"
   » Adds API for querying the format of a CoglFramebuffer

  • List of bugs fixes since Cogl 1.7.6

    https://bugzilla.gnome.org:

    #656426 - Improve the generated GLSL code
    #656441 - Build failure in examples
    #656587 - Outdated FSF Address in code files
    #657347 - Retrieve the number of texture image units
    #657840 - Atlas-ed bitmaps converted too many times
    #656809 - cogl 1.7.6 doesn't compile on Fedora 16/17

Many thanks to:
    Damien Lespiau
    Neil Roberts
    Emmanuele Bassi

Cogl 1.7.6                                                         2011-08-12
===============================================================================

  • List of changes since Cogl 1.7.4

   » Add an experimental cogl_matrix_look_at function
   » Fix flipping the y-coordinates for cogl_framebuffer_swap_region
   » Automatically allocate framebuffers on first use
   » Add experimental cogl_framebuffer_clear functions
   » Add a function to get the context given a framebuffer
   » Add support for a cogl.conf config file
   » Fix using TEXTURE_n as the source for a layer combine
   » Some fixes for the WGL backend
   » Add experimental API to upload a texture subregion from a CoglBuffer

  • List of bugs fixes since Cogl 1.7.4

    https://bugzilla.gnome.org:

    #655026 - cogl-pango should not link to systemwide libcogl during make
              install
    #655216 - egl: Guard the feature discovery of eglCreateImage()
    #655228 - Bugs in cogl-quaternion library functions
              cogl_quaternion_init_from_array and
              cogl_quaternion_get_rotation_axis.
    #655355 - Make Cogl master work on EGL/GDL again
    #655400 - cogl-pipeline-fragend-arbfp: Initialise template_pipeline
    #655412 - Don't use the 'NULL' GModule to resolve GL symbols
    #655510 - Access Violation (a.k.a Segfault) in cogl/driver/gl/cogl-gl.c
    #655556 - Memory leak in function cogl_polygon in cogl-primitives.c
    #655723 - egl-gdl: Silence a gcc warning
    #655724 - egl-gdl: Don't generate cogl-display.h
    #656303 - Improve cogl-pango's journal usage
    #655792 - android: Commit the build.xml file
    #655791 - android: Update the hello example to the latest glib-android
              API change

Many thanks to:
    Robert Bragg
    Damien Lespiau
    Chun-wei Fan
    Alexandre Rostovtsev
    Kirk A. Baker
    Philip Withnall
    Florian Renaut

Cogl 1.7.4                                                         2011-07-20
===============================================================================

  • List of changes since Cogl 1.7.2

   » Optimize pipeline unparent operation using embedded lists instead
     of using GList API.
   » Remove the old matrix operation code we had before pulling in the
     mesa based code, and flatten all our matrix utilities back into one
     maintainable file.
   » Expose cogl_framebuffer_get_red/green/blue/alpha bits to query
     the precision for a framebuffer's color channels.
   » Numerous reference manual updates
   » Fix some memory leaks in CoglPipeline that weren't captured in
     bugzilla.
   » Fix some EGL winsys issues that weren't captured in bugzilla.
   » Switch to dynamically loading libGL, libGLESv2 or libGLES[v1]_CM
     at runtime so it's possible to distribute a libcogl that can choose
     to work with any of these at runtime. This can simplify packaging
     on distros that have numerous packages that provide a platform
     specific GL/GLES driver and certainly helps during the development
     process when evaluating the pros-and-cons of different drivers for
     a given platform.
   » Clean up lots of inconsistencies with platform specific APIs, so
     we follow the naming convention of cogl_<platform>_object_method.
   » Remove cogl_set_default_context from experimental 2.0 api, since
     we are aiming to remove the default context for 2.0
   » Ensure the experimental 2.0 reference manual gets a unique
     DOC_MODULE name so that distro's trying to package cogl don't end
     up installing the 1.x and 2.0 manuals to the same location
   » Add a program cache for the GLSL backend, a bit like we have for
     the ARBfp backend. This can be a big boost in performance for some
     apps depending on your platform.
   » Adds dither_enable getter and setter API for CoglFramebuffer so
     that Clutter doesn't need to use the GL API directly when picking.
     We need to get to the point where Clutter doesn't need to link
     against libGL directly so Clutter can take advantage of runtime
     driver selection by Cogl.
   » Use MESA_pack_invert extension in cogl_read_pixels to avoid
     needing to manually flip pixel data read in bottom-up order to a
     top-down order.
   » Fix the hello example to actually clear the framebuffer at the
     start of the frame instead of unintentionally relying on the driver
     to have cleared the framebuffer.

  • List of bugs fixes since Cogl 1.7.2

    https://bugzilla.gnome.org:

    #652514 - CoglPipeline could embed the list nodes for the
              children directly in the CoglPipeline struct
    #654440 - _cogl_winsys_context_init crash
    #654718 - clutter 1.6.16 compile issues
    #654593 - dlopening an unversionaed Shared Object is illegal.

Many thanks to:
    Neil Roberts
    Damien Lespiau
    Emmanuele Bassi
    Takeshi AIHANA

Cogl 1.7.2                                                         2011-07-01
===============================================================================

  • List of changes since Cogl 1.7.0

   » Add an example program to draw a 3D crate

   » Add experimental API to get and set the viewport on a framebuffer
     without going through the implicit context.

   » Add API to select the winsys backend without having to use an
     environment variable.

   » Various documentation fixes.

   » Add winsys-specific typesafe APIs to replace the old
     cogl_renderer_handle_native_event functions.

   » Rename platform-specific APIs so that we consistently have
     cogl_<platform>_symbol_name instead of cogl_symbol_name_<platform>.

   » Fixed building against GLES.

  • List of bugs fixes since Cogl 1.7.0

    https://bugzilla.gnome.org:

    #652672 - Typo fix in cogl-framebuffer
    #653615 - cogl_release_status='snapshot' breaks linking on 64-bit
              systems due to namespace conflict with ltoptions.m4
    #653229 - pipeline: Don't regenerate shaders when not changing the
              number of layers
    #653231 - pipeline: Don't trigger a change when binding the invalid
              texture target

Many thanks to:
  Robert Bragg
  Adam Jackson
  Emmanuele Bassi

Cogl 1.7.0                                                         2011-06-10
===============================================================================

  • List of changes since Clutter 1.6

    » Cogl split out into a standalone project!

    » Added native winsys backends for GLX, WGL, EGL and Android (Quartz in
      progress)
      » Supported EGL platforms include: NULL, X11, GDL and Wayland

    » Adds renderer,display,onscreen-template and swap-chain APIs for
      writing standalone apps using the experimental 2.0 API

    » Added convenience functions cogl_matrix_view_2d_in_frustum/perspective
      for setting up a Clutter style view transform for a 2d coordinate system
      inside a projective perspective.

    » Added an experimental Quaternion API

    » Added an experimental Euler API

    » Re-worked the CoglPipeline depth testing state API

    » Added EGL X11 texture-from-pixmap support.

    » Added a tiny Wayland compositor (without input support) under
      examples/

    » Optimizations:
      » Optimise paths that are just a rectangle
      » Journal: Use a pool of vertex-arrays to avoid allocation costs.

  • List of bugs fixes since Clutter 1.6

    http://bugzilla.clutter-project.org:
    #2538 - crash in gnome-shell
    #2544 - Using vertex buffers causes memory corruption when you unref the CoglHandle
    #2561 - Updates to COGL sources regarding non-standard code usage
    #2588 - Assertion failure in _cogl_pipeline_set_layer_texture_target
    #2594 - cogl-clip-state: Adapt to experimental cogl2 API.
    #2620 - _cogl_offscreen_new_to_texture_full() leaks reference when failing

    https://bugzilla.gnome.org:
    #641197 - mouse events at pixel row zero are ignored
    #650966 - CoglPipeline doesn't support any layers on fixed function hardware
    #650979 - cogl-pipeline-fragend-fixed: Fix enabling texture targets
    #651256 - configure fails for the poor sods who use dash as sh

Many thanks to:

  Neil Roberts
  Emmanuele Bassi
  Damien Lespiau
  James Athey
  Jasper St. Pierre
  Piotr Drąg