Commit Graph

9 Commits

Author SHA1 Message Date
Robert Bragg
3c82fd056c pipeline: mark all cogl-pipeline.h symbols experimental
All of the cogl_pipeline API is currently experimental so this makes
sure the API is surrounded by #ifdef COGL_ENABLE_EXPERIMENTAL_API
guards and all the symbols have a #define to give them an _EXP suffix as
we do for other experimental API.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-19 16:40:06 +01:00
Robert Bragg
db6c452aaa pipeline: split out all layer state apis
As part of an on-going effort to get cogl-pipeline.c into a more
maintainable state this splits out all the apis relating just to
layer state. This just leaves code relating to the core CoglPipeline
and CoglPipelineLayer design left in cogl-pipeline.c.

This splits out around 2k more lines from cogl-pipeline.c although we
are still left with nearly 4k lines so we still have some way to go!

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-19 16:40:00 +01:00
Robert Bragg
9b58b6f472 pipeline: split out all core state apis
Since cogl-pipeline.c has become very unwieldy this make a start at
trying to shape this code back into a manageable state. This patche
moves all the API relating to core pipeline state into
cogl-pipeline-state.c. This doesn't move code relating to layer state
out nor does it move any of the code supporting the core design
of CoglPipeline itself.

This change alone factors out 2k lines of code from cogl-pipeline.c
which is obviously a good start. The next step will be to factor
out the layer state and then probably look at breaking all of this
state code down into state-groups.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-19 16:35:59 +01:00
Robert Bragg
9b56ce4d5b blend-strings: Make braces around blend factor optional
for a blend string like:
"RGBA=ADD(SRC_COLOR, SRC_COLOR * (DST_COLOR[A]))"
it was awkward that we were requiring developers to explicitly put
redundant brackets around the DST_COLOR[A] blend factor. The parser has
been updated so now braces are only required for factors like
"(1-SRC_COLOR[A])"

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-05 17:54:46 +01:00
Robert Bragg
8b34a39319 Adds ColorMask support to Cogl
This adds CoglPipeline and CoglFramebuffer support for setting a color
mask which is a bit mask defining which color channels should be written
to the current framebuffer.

The final color mask is the intersection of the framebuffer color mask
and the pipeline color mask. The framebuffer mask affects all rendering
to the framebuffer while the pipeline masks can be used to affect
individual primitives.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-07-19 19:27:09 +01:00
Robert Bragg
07c0b9f89f Add CoglDepthState API
Instead of simply extending the cogl_pipeline_ namespace to add api for
controlling the depth testing state we now break the api out. This adds
a CoglDepthState type that can be stack allocated. The members of the
structure are private but we have the following API to setup the state:

    cogl_depth_state_init
    cogl_depth_state_set_test_enabled
    cogl_depth_state_get_test_enabled
    cogl_depth_state_set_test_function
    cogl_depth_state_get_test_function
    cogl_depth_state_set_writing_enabled
    cogl_depth_state_get_writing_enabled
    cogl_depth_state_set_range
    cogl_depth_state_get_range

This removes the following experimental API which is now superseded:

    cogl_material_set_depth_test_enabled
    cogl_material_get_depth_test_enabled
    cogl_material_set_depth_test_function
    cogl_material_get_depth_test_function
    cogl_material_set_depth_writing_enabled
    cogl_material_get_depth_writing_enabled
    cogl_material_set_depth_range
    cogl_material_get_depth_range

Once a CoglDepthState structure is setup it can be set on a pipeline
using cogl_pipeline_set_depth_state().
2011-05-16 18:36:44 +01:00
Emmanuele Bassi
aa4f63338c docs: Fixes for the Cogl API reference 2010-12-22 09:52:35 +00:00
Neil Roberts
0a314a752d cogl-pipeline: Add getters for the alpha test state
This adds two public functions:

 cogl_pipeline_get_alpha_test_function
   and
 cogl_pipeline_get_alpha_test_reference.
2010-11-24 18:06:44 +00:00
Robert Bragg
f80cb197a9 cogl: rename CoglMaterial -> CoglPipeline
This applies an API naming change that's been deliberated over for a
while now which is to rename CoglMaterial to CoglPipeline.

For now the new pipeline API is marked as experimental and public
headers continue to talk about materials not pipelines. The CoglMaterial
API is now maintained in terms of the cogl_pipeline API internally.
Currently this API is targeting Cogl 2.0 so we will have time to
integrate it properly with other upcoming Cogl 2.0 work.

The basic reasons for the rename are:
- That the term "material" implies to many people that they are
  constrained to fragment processing; perhaps as some kind of high-level
  texture abstraction.
    - In Clutter they get exposed by ClutterTexture actors which may be
      re-inforcing this misconception.
- When comparing how other frameworks use the term material, a material
  sometimes describes a multi-pass fragment processing technique which
  isn't the case in Cogl.
- In code, "CoglPipeline" will hopefully be a much more self documenting
  summary of what these objects represent; a full GPU pipeline
  configuration including, for example, vertex processing, fragment
  processing and blending.
- When considering the API documentation story, at some point we need a
  document introducing developers to how the "GPU pipeline" works so it
  should become intuitive that CoglPipeline maps back to that
  description of the GPU pipeline.
- This is consistent in terminology and concept to OpenGL 4's new
  pipeline object which is a container for program objects.

Note: The cogl-material.[ch] files have been renamed to
cogl-material-compat.[ch] because otherwise git doesn't seem to treat
the change as a moving the old cogl-material.c->cogl-pipeline.c and so
we loose all our git-blame history.
2010-11-03 18:09:23 +00:00