Removing CoglHandle has been an on going goal for quite a long time now
and finally this patch removes the last remaining uses of the CoglHandle
type and the cogl_handle_ apis.
Since the big remaining users of CoglHandle were the cogl_program_ and
cogl_shader_ apis which have replaced with the CoglSnippets api this
patch removes both of these apis.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 6ed3aaf4be21d605a1ed3176b3ea825933f85cf0)
Since the original patch was done after removing deprecated API
this back ported patch doesn't affect deprecated API and so
actually this cherry-pick doesn't remove all remaining use of
CoglHandle as it did for the master branch of Cogl.
The snippet hook COGL_SNIPPET_HOOK_TEXTURE_LOOKUP now gets passed an
extra variable called cogl_sampler which is the sampler attached to
this layer. For example this will be useful when implementing the blur
effect in Clutter so that it can make the texture hook for that layer
sample the texture multiple times.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the snippet api
symbols.
This adds a documentation section for CoglSnippet which gives an
overview of how to use them. It also fixes some syntax errors in the
existing documentation and adds the missing pipeline functions for
adding snippets to the documentation sections file.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
This adds a hook called COGL_SNIPPET_HOOK_TEXTURE_COORD_TRANSFORM.
This can be used to alter the application of the layer user matrix to
a texture coordinate or it can bypass it altogether.
This is the first per-layer hook that affects the vertex shader state
so the patch includes the boilerplate needed to get that to work.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
Instead of specifying the hook point when adding to the pipeline using
a separate function for each hook, the hook is now a property of the
snippet. The hook is set on construction and is then read-only.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
If present, the 'replace' string will be used instead of whatever code
would normally be invoked for that hook point. It will also replace
any previous snippets.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
This adds a CoglObject called CoglSnippet which will be used to store
strings used as GLSL snippets to be attached at hook points to a
CoglPipeline. The snippets can currently contain three strings:
declarations - This will be placed in the global scope and is intended
to be used to declare uniforms, attributes and
functions.
pre - This will be inserted before the hook point.
post - This will be inserted after the hook point.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
