Commit Graph

1179 Commits

Author SHA1 Message Date
Robert Bragg
be40cbb8c3 build: include missing headers in cogl-winsys-egl-private.h
We were missing various platform header includes in
cogl-winsys-egl-private.h when building support for non KMS egl
platforms.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 23:19:45 +00:00
Robert Bragg
c2729e4ea8 build: don't inc egl headers for non EGL builds
For example when building on windows we don't want to require EGL
headers when compiling cogl-renderer.c or cogl-texture-2d.c so we make
sure not to include cogl-winsys-egl-private.h if we aren't supporting
EGL.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 23:19:35 +00:00
Robert Bragg
40b14c6084 kms: avoid using redundant g* and GL* types
A small, pedantic change to remove the use of redundant gint and GLuint
types instead of int and unsigned int.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 22:43:15 +00:00
Robert Bragg
056daad850 build: only include cogl-winsys-kms.h if KMS enabled
Only include cogl-winsys-kms.h in cogl-winsys-egl-private.h if KMS
support has been enabled.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 22:39:19 +00:00
Robert Bragg
aa6433d8c5 kms: Check for EGL_KHR_surfaceless_opengl extension
This adds a check for the EGL_KHR_surfaceless_opengl extension which we
depend on for being able to MakeCurrent (NO_SURFACE) as well as create a
context without and EGLConfig.

Reviewed-by: Rob Bradford <rob@linux.intel.com>
2011-11-28 17:38:17 +00:00
Robert Bragg
7a91c91994 kms: flatten setup_kms into _cogl_winsys_kms_display_setup
Since _cogl_winsys_kms_display_setup was basically just calling
setup_kms() it made sense to fold the code of setup_kms() back into the
_cogl_winsys_kms_display_setup() function.

Reviewed-by: Rob Bradford <rob@linux.intel.com>
2011-11-28 17:38:15 +00:00
Robert Bragg
607bfec48d kms: move Cogl*EGL typedefs to cogl-winsys-egl-private.h
So that the various internal Cogl*EGL typedefs can be available to
cogl-winsys-kms.c this moves them into cogl-winsys-egl-private.h

Reviewed-by: Rob Bradford <rob@linux.intel.com>
2011-11-28 17:37:31 +00:00
Rob Bradford
1b54c8023e kms: Add first version of "baremetal" backend for EGL on KMS
To start with this backend only supports creating a single CoglOnscreen
framebuffer and will automatically set is up to display fullscreen on
the first suitable crtc it can find.

To compile this backend - get some dribbly black candles, sacrifice a
goat and configure with: --enable-kms-egl-platform

Note: There is currently a problem with using GLES2 with this winsys
so you need to run with EGL_DRIVER=gl
Note: If you have problems with mesa crashing in XCB during
eglInitialize then you may need to explicitly run with EGL_PLATFORM=gbm

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-28 17:37:28 +00:00
Neil Roberts
d44e548715 cogl-debug: Mark _cogl_debug_flags with dllexport for MSVC
When building with MSVC, symbols to be exported that point to data
need to be marked with dllimport to be successfully imported. The
_cogl_debug_flags variable is currently exported because it is used
from cogl-pango. This patch adds a COGL_EXPORT macro to cogl-util.h
which is used in cogl-debug.h

Based on a patch by Chun-wei Fan

https://bugzilla.gnome.org/show_bug.cgi?id=650020

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-25 13:14:10 +00:00
Chun-wei Fan
2055f6ba91 VS 2008/2010 project files to build Cogl
These are the VS 2008/2010 project files to build Cogl, with a README.txt
to explain the process involved.

Note that the Cogl and Cogl-Pango projects (and filters for VS2010) are
expanded with the correct source file listings during "make dist", which
is done to simplify maintenance of these project files.

-added preconfigured config.h(.win32.in), which is expanded with the
 correct versioining info during autogen
-added preconfigued cogl/cogl-defines.h.win32
-added symbols files for cogl and cogl-pango
-Have configure.ac expand the config.h.win32.in into config.h.win32
 with the correct versioning info, etc, and to include the Visual C++
 project files for distribution
-Added rules in cogl/Makefile.am to expand the cogl VS 2008/2010 projects
 and filters from the templates with up-to-date source file listings, to
 distribute cogl-enum-types.c, cogl-enum-types.h to ease compilation and
 to avoid depending on PERL on Windows installations.
-Added rules in cogl-pango/Makefile.am to expand the cogl-pango VS2008/
 2010 projects and filters from the templates with up-to-date source file
 listings.
-Added/edited various Makefile.am's in build to distribute the VS2008/2010
 project files and associated items required for the build.
-Update .gitignore. There needs to be a pre-configured
 config.h(.win32) and its template, config.h.win32.in for Visual C++
 builds

https://bugzilla.gnome.org/show_bug.cgi?id=650020

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-25 13:12:45 +00:00
Neil Roberts
9e52b4d714 Fix comparing the uniforms state
When comparing uniform values, it was not correctly handling the case
where pipeline0 has the value set but pipeline1 does not (only the
other way around) so it would crash.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-24 13:23:00 +00:00
Chun-wei Fan
80a9c3bb32 Update cogl/winsys/cogl-winsys-stub.c
Deal with c99ism... I know it's not pretty, but it is the way
to go with non-c99 compilers.  That's life...

Reviewed-by: Neil Roberts <neil@linux.intel.com>
Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-23 12:16:45 +00:00
Neil Roberts
61d71c0926 cogl-flags: Fix iterating flag when the most-significant bit is set
When the flags contain a value that only has the most-significant bit
set then ffsl will return the size of an unsigned long. According to
the C spec it is undefined what happens when shifting by a number
greater than or equal to the size of the left operand. On Intel (and
probably others) this seems to end up being a no-op so the iteration
breaks. To fix this we can split the shift into two separate
shifts. We always need to shift by at least one bit so we can put this
one bit shift into a separate operator.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-22 16:07:21 +00:00
Neil Roberts
c269817edd cogl-pipeline: Use a hash table for faster uniform name lookup
The uniform names are now stored in a GPtrArray instead of a linked
list. There is also a hash table to speed up converting names to
locations.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
4a7cd0d2ac cogl-pipeline: Store the uniform overrides in an array instead of list
Previously the uniform overrides were stored in a linked list. Now
they are stored in a g_malloc'd array. The values are still tightly
packed so that there is only a value for each uniform that has a
corresponding bit in override_mask. The allocated size of the array
always exactly corresponds to the number of bits set in the
override_mask. This means that when a new uniform value is set on a
pipeline it will have to grow the array and copy the old values
in. The assumption is that setting a value for a new uniform is much
less frequent then setting a value for an existing uniform so it makes
more sense to optimise the latter.

The advantage of using an array is that we can quickly jump to right
boxed value given a uniform location by doing a population count in
the bitmask for the number of bits less than the given uniform
location. This can be done in O(1) time whereas the old approach using
a list would scale by the number of bits set.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
f23b12a886 cogl-bitmask: Add _cogl_bitmask_popcount
This returns a population count of all the bits that are set in the
bitmask.

There is now also a _cogl_bitmask_popcount_upto which counts the
number of bits set up to but not including the given bit index. This
will be useful to determine the number of uniform overrides to skip if
we tightly pack the values in an array.

The test-bitmask test has been modified to check these two functions.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
4553ca0695 cogl-pipeline: Add support for setting uniform values
This adds the following new public experimental functions to set
uniform values on a CoglPipeline:

void
cogl_pipeline_set_uniform_1f (CoglPipeline *pipeline,
                              int uniform_location,
                              float value);
void
cogl_pipeline_set_uniform_1i (CoglPipeline *pipeline,
                              int uniform_location,
                              int value);
void
cogl_pipeline_set_uniform_float (CoglPipeline *pipeline,
                                 int uniform_location,
                                 int n_components,
                                 int count,
                                 const float *value);
void
cogl_pipeline_set_uniform_int (CoglPipeline *pipeline,
                               int uniform_location,
                               int n_components,
                               int count,
                               const int *value);
void
cogl_pipeline_set_uniform_matrix (CoglPipeline *pipeline,
                                  int uniform_location,
                                  int dimensions,
                                  int count,
                                  gboolean transpose,
                                  const float *value);

These are similar to the old functions used to set uniforms on a
CoglProgram. To get a value to pass in as the uniform_location there
is also:

int
cogl_pipeline_get_uniform_location (CoglPipeline *pipeline,
                                    const char *uniform_name);

Conceptually the uniform locations are tied to the pipeline so that
whenever setting a value for a new pipeline the application is
expected to call this function. However in practice the uniform
locations are global to the CoglContext. The names are stored in a
linked list where the position in the list is the uniform location.

The global indices are used so that each pipeline can store a mask of
which uniforms it overrides. That way it is quicker to detect which
uniforms are different from the last pipeline that used the same
CoglProgramState so it can avoid flushing uniforms that haven't
changed. Currently the values are not actually compared which means
that it will only avoid flushing a uniform if there is a common
ancestor that sets the value (or if the same pipeline is being flushed
again - in which case the pipeline and its common ancestor are the
same thing).

The uniform values are stored in the big state of the pipeline as a
sparse linked list. A bitmask stores which values have been overridden
and only overridden values are stored in the linked list.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
4e760d51f1 cogl-bitmask: Add _cogl_bitmask_set_flags
This adds a _cogl_bitmask_set_flags function which can be used to copy
the values from a CoglBitmask to an array of unsigned longs which can
be used with the COGL_FLAGS_* macros. The values are or'd in so that
in can be used multiple times to combine multiple bitmasks.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
d2fd168351 cogl-matrix: Add a public cogl_matrix_transpose()
This function takes a single matrix argument and replaces the matrix
with its transpose.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
037c0aa88c Move POPCOUNTL to cogl-util
This moves the POPCOUNTL macro from cogl-winsys-glx to cogl-util and
renames it to _cogl_util_popcountl so that it can be used in more
places. The fallback function for when the GCC builtin is not
available has been replaced with an 8-bit lookup table because the
HAKMEM implementation doesn't look like it would work when longs are
64-bit so it's not suitable for a general purpose function on 64-bit
architectures. Some of the pages regarding population counts seem to
suggest that using a lookup table is the fastest method anyway.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
436a7a45da cogl-boxed-value: Add _cogl_boxed_value_copy
This adds a function to copy one boxed value to another. It is assumed
that the destination boxed value is totally initialised (so it won't
try to free any memory in it).

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
7068849ae6 cogl-boxed-value: Wrap the GL calls in the GE() macro
This wraps all of the calls to glUniform* in the GE() macro so that it
will detect GL errors in the right place.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
256f5791fd cogl-program: Move the code for CoglBoxedValue to its own file
The code for manipulating CoglBoxedValues is now separated from
cogl-program.c into its own file. That way when we add support for
setting uniform values on a CoglPipeline the code for storing the
values can be shared.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:10 +00:00
Neil Roberts
d706991579 cogl-flags: Add some macros to help iterate the bits
This adds some macros to iterate over all the bits set in an array of
flags. The macros are a bit awkward because it tries to avoid using a
callback pointer so that the code is inlined.

cogl_bitmask is now using these macros as well so that the logic can
be shared.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:00 +00:00
Neil Roberts
dbc31b70cc cogl-bitmask: Add a return value for the foreach callback
The foreach callback can now return FALSE to stop the iteration.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
f4c1ba9ed9 cogl-flags: Use longs instead of ints
Previously cogl-flags was using an array of ints to store the
flags. There was a comment saying that it would be nice to use longs
but this is awkward because g_parse_debug_flags can only work in
ints. This is a silly reason not to use longs because we can just
parse multiple sets of flags per long. This patch therefore changes
cogl-flags to use longs and tweaks the debug key parsing code.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
2ba4fe417a cogl-bitmask: Use ffsl to speedup bitmask iteration
Instead of testing each bit when iterating a bitmask, we can use ffsl
to skip over unset bits in single instruction. That way it will scale
by the number of bits set, not the total number of bits.

ffsl is a non-standard function which glibc only provides by defining
GNUC_SOURCE. However if we are compiling with GCC we can avoid that
mess and just use the equivalent builtin. When not compiling for GCC
it will fall back to _cogl_util_ffs if the size of ints and longs are
the same (which is the case on i686). Otherwise it fallbacks to a slow
function implementation.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
f0f9493f5c cogl-fixed: Move the GType defs from cogl-util.c to cogl-fixed.c
The boilerplate for defining a GType for CoglFixed lived in
cogl-util.c but this didn't seem to make much sense seeing as nothing
in the cogl-util.h header file relates to CoglFixed and there is
already a separate C file for CoglFixed code. This also removes some
redundant header includes from cogl-util.c

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
93321d9b89 cogl-bitmask: Use longs instead of ints
Instead of storing only 31 bits in the pointer for a CoglBitmask, it
now assumes it can store a whole unsigned long minus the one bit used
to mark whether it has been converted to a GArray or not. This works
on the assumption that we can cast an unsigned long to a pointer and
back without losing information which I think should be true for any
platforms that Cogl is interested in. This has the advantage that on
64-bit architectures we can store 63 bits before we have to resort to
using a GArray at no extra cost. The values in the GArray are now
stored as unsigned longs as well on the assumption that it is more
efficient to load and store data in chunks of longs rather than ints.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 15:43:25 +00:00
Neil Roberts
39ca3e51df Don't take a reference to the last used onscreen framebuffer
Cogl keeps a pointer to the last used onscreen framebuffer from the
context to implement the deprecated cogl_set_draw_buffer function
which can take COGL_WINDOW_BUFFER as the target to use the last
onscreen buffer. Previously this would also take a reference to that
pointer. However that was causing a circular reference between the
framebuffer and the context which makes it impossible to clean up
resources properly when onscreen buffers are used. This patch instead
changes it to just store the pointer and then clear the pointer during
_cogl_onscreen_free as a kind of cheap weak reference.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-14 18:40:28 +00:00
Neil Roberts
5369b3c601 pipeline: Make the backface culling experimental public
This adds two new experimental public functions to replace the old
internal _cogl_pipeline_set_cull_face_state function:

void
cogl_pipeline_set_cull_face_mode (CoglPipeline *pipeline,
                                  CoglPipelineCullFaceMode cull_face_mode);

void
cogl_pipeline_set_front_face_winding (CoglPipeline *pipeline,
                                      CoglWinding front_winding);

There are also the corresponding getters.

https://bugzilla.gnome.org/show_bug.cgi?id=663628

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-14 18:40:27 +00:00
Neil Roberts
8be44f9876 cogl-utils: Include cogl-defines.h
cogl-utils.h needs to include cogl-defines.h so that it knows whether
COGL_HAS_GLIB_SUPPORT is defined.

https://bugzilla.gnome.org/show_bug.cgi?id=663578

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
2011-11-14 18:40:27 +00:00
Chun-wei Fan
91f91dc678 cogl-renderer.c: Fix includes
Only include cogl-xlib-renderer.h when XLIB support is available

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-14 18:37:57 +00:00
Neil Roberts
1566941c2f cogl-context: Destroy texture units later on
This patch moves the call to _cogl_destroy_texture_units() from
_cogl_context_free() to later on. When destroying a GL texture the
texture units are checked. This would end up accessing invalid memory
so we need to try to destroy the texture units only after everything
that might be referencing a texture has been destroyed.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-04 13:03:01 +00:00
Neil Roberts
c637324663 cogl-program: Don't ignore the transpose property of matrix uniforms
When setting a matrix uniform value the transpose property was getting
lost and left uninitialized.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-03 15:50:02 +00:00
Robert Bragg
89731d160e Skip clip flush in _texture_2d_copy_from_framebuffer
Although there was a comment in cogl_texture_2d_copy_from_framebuffer
explaining that we shouldn't flush the clip state, the comment was a bit
miss-leading implying we were going to explicitly set a NULL clip. Also
we weren't actually avoiding flushing the clip state since we were
passing 0 for the CoglDrawFlags.

We now pass COGL_FRAMEBUFFER_FLUSH_SKIP_CLIP_STATE in to the flags when
flushing the framebuffer state and the comment has be updated to explain
that clipping won't affect reading from the framebuffer so we don't need
to flush it.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-03 13:57:06 +00:00
Robert Bragg
e2c758c105 clip: make cogl_clip_ensure a NOP
This api is deprecated and documented to be a NOP which wasn't actually
true. This patch actually updates the function to be a NOP. Its nice
that this gets rid of a point where we flush framebuffer state because
we are looking to add a new VirtualFramebuffer interface which will need
special consideration at each of the points we flush framebuffer state.

It was a mistake that this API was ever published, we don't believe
anyone is using the api but until we break api we have to keep the
symbol. The documented semantics are vague enough that a NOP is ok since
we never explicitly documented how the state would be flushed to GL so
there would be no way to reliably use that state anyway.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-03 13:57:06 +00:00
Rob Bradford
11d38e7ce8 wayland: Port to current Wayland
This change is one logical update to update the Wayland support. This
comprises of the following parts:

* Binding to both the shell and compositor global objects - necessary since
the API for setting top level status moved to the wl_shell interface
* The Wayland visual API went away and instead you setup the EGL surface
appropriately
* The message handling was refined to reflect the current behaviour - now
obsolete comments were removed and new comments updated

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-03 13:57:01 +00:00
Rob Bradford
00ca539845 wayland: Remove unused function
The function force_roundtrip was unused and required API that was
removed from Wayland.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-03 13:52:37 +00:00
Robert Bragg
061ef6ed06 glx: remove miss leading comment
There was a comment implying that if a rgba config has been requested
but no suitable config was found then we would automatically fall back
to an rgb config instead. Actually if no rgba visual is found we simply
fail without any automatic fall back because Cogl is not in a good
position to judge if automatic fall backs are acceptable for higher
level apis such as clutter.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-03 13:52:30 +00:00
Neil Roberts
00f0a66ec9 Use the same number for n_tex_coord_attribs in all linked shaders
On GLES2, we need to specify an array size for the texture coord
varying array. Previously this size would be decided in one of the
following ways:

- For generated vertex shaders it is always the number of layers in
  the pipeline.

- For generated fragment shaders it is the highest sampled texture
  unit in the pipeline or the number of attributes supplied by the
  primitive, whichever is higher.

- For user shaders it is usually the number of attributes supplied by
  the primitive. However, if the application tries to compile the
  shader and query the result before using it, it will always be at
  least 4.

These shaders can quite easily end up with different values for the
declaration which makes it fail to link. This patch changes it so that
all of the shaders are generated with the maximum of the number of
texture attributes supplied by the primitive and the number of layers
in the pipeline. If this value changes then the shaders are
regenerated, including user shaders. That way all of the shaders will
always have the same value.

https://bugzilla.gnome.org/show_bug.cgi?id=662184

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-02 13:50:28 +00:00
Robert Bragg
757916f17a doc: deprecate cogl_texture_get_rowstride()
This documents that cogl_texture_get_rowstride() is deprecated (or
rather it was a mistake that the api was ever published) and also
clarifies the rowstride argument documentation for
cogl_texture_get_data() to explain how it's automatically calculated
when 0 is passed to help avoid misleading people into thinking that
cogl_texture_get_rowstride() is an appropriate way to get a valid
rowstride for that.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-02 13:34:14 +00:00
Rico Tzschichholz
567661ccf3 build: add missing header to fix make dist 2011-11-02 07:34:26 -04:00
Zan Dobersek
d8c47e25f2 Remove inclusion of Xlib headers in Cogl headers
Xlib headers define many trivially named objects which can later cause
name collision problems when only cogl.h header is included in a program
or library. Xlib headers are now only included through including the
standalone header cogl-xlib.h.

https://bugzilla.gnome.org/show_bug.cgi?id=661174

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-01 15:55:53 +00:00
Robert Bragg
e0344468d8 docs: Adds various missing 2.0 sections and symbols
This adds a number of missing sections and symbols to the experimental
2.0 reference manual.
2011-11-01 12:03:04 +00:00
Robert Bragg
e9075931e3 rectangles: rely on meta-texture api for clamping
Instead of emulating _CLAMP_TO_EDGE in cogl-primitives.c we now defer to
cogl_meta_texture_foreach_in_region() to support _CLAMP_TO_EDGE for us.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
4c49f83056 meta-texture: Support CLAMP_TO_EDGE
cogl_meta_texture_foreach_in_region() now directly supports
CLAMP_TO_EDGE wrap modes. This means the cogl_rectangle code will be
able to build on this and makes the logic accessible to anyone
developing custom primitives that need to support meta textures.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
8cf76ee36b primitive: Add n_indices arg to _set_indices function
When associating indices with a CoglPrimitive you are now forced to
specify the number of indices that should be read when drawing.

It's easy to forget to call cogl_primitive_set_n_vertices() after
associating indices with a primitive (and anyway you can see that someone
could be led to believe Cogl can determine that implicitly somewhow) so
this should avoid a lot of mistakes with using the API.

We'd expect that setting indices and updating the n_vertices property
would go hand in hand 99% of the time anyway so this change should
be more convenient as well as less error prone.

This patch adds some documentation for cogl_primitive_set_indices and
cogl_primitive_get/set_n_vertices. It also tries to clarify how the
CoglPrimitive:n_vertices property is updated and what that property
means in relation to other functions too.

https://bugzilla.gnome.org/show_bug.cgi?id=661019

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
a8fbde4710 doc: Adds some documentation for CoglIndices
This adds just some basic documentation to try and explain what
CoglIndices are useful for.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
98dc73a8f7 spans: avoid normalize with normalize_factor of 1
if a normalize factor of 1 is passed then we don't need to normalize the
starting point to find the closest point equivalent to 0.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
18fb1ffab5 texture: Make CoglSubTexture experimental public api
This exposes cogl_sub_texture_new() and cogl_is_sub_texture() as
experimental public API. Previously sub-textures were only exposed via
cogl_texture_new_from_sub_texture() so there wasn't a corresponding
CoglSubTexture type. A CoglSubTexture is a high-level texture defined as
a sub-region of some other parent texture. CoglSubTextures are high
level textures that implement the CoglMetaTexture interface which can
be used to manually handle texture repeating.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
1ee861a82c framebuffer: adds cogl_framebuffer_get_samples_per_pixel
It's useful to be able to query back the number of
point_samples_per_pixel that may have previously be chosen using
cogl_framebuffer_set_samples_per_pixel().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
90f106117f texture: Make CoglTextureRectangle experimentally public
This exposes CoglTextureRectangle in the experimental cogl 2.0 api. For
now we just expose a single constructor;
cogl_texture_rectangle_new_with_size() but we can add more later.

This is part of going work to improve our texture apis with more
emphasis on providing low-level access to the varying semantics of
different texture types understood by the gpu instead of only trying to
present a lowest common denominator api.

CoglTextureRectangle is notably useful for never being restricted to
power of two sizes and for being sampled with non-normalized texture
coordinates which can be convenient for use a lookup tables in glsl due
to not needing separate uniforms for mapping normalized coordinates to
texels. Unlike CoglTexture2D though rectangle textures can't have a
mipmap and they only support the _CLAMP_TO_EDGE wrap mode.

Applications wanting to use CoglTextureRectangle should first check
cogl_has_feature (COGL_FEATURE_ID_TEXTURE_RECTANGLE).

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
b72f255c0a Start to reduce dependence on glib
Since we've had several developers from admirable projects say they
would like to use Cogl but would really prefer not to pull in
gobject,gmodule and glib as extra dependencies we are investigating if
we can get to the point where glib is only an optional dependency.
Actually we feel like we only make minimal use of glib anyway, so it may
well be quite straightforward to achieve this.

This adds a --disable-glib configure option that can be used to disable
features that depend on glib.

Actually --disable-glib doesn't strictly disable glib at this point
because it's more helpful if cogl continues to build as we make
incremental progress towards this.

The first use of glib that this patch tackles is the use of
g_return_val_if_fail and g_return_if_fail which have been replaced with
equivalent _COGL_RETURN_VAL_IF_FAIL and _COGL_RETURN_IF_FAIL macros.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
fd67ddd56e matrix: check DIRTY_TYPE flag in _cogl_matrix_print
when printing a matrix we aim to print out the matrix type but we
weren't checking the flags first to see if the type is valid. We now
check for the DIRTY_TYPE flag and if not set we also validate the matrix
type isn't out of range.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
a054b53891 matrix: init flags before tmp _translate in _look_at
In cogl_matrix_look_at we have a tmp CoglMatrix allocated on the stack
but we weren't initializing its flags before passing it to
cogl_matrix_translate which meant if we were using COGL_DEBUG=matrices
we would end up trying to print out an invalid matrix type resulting in
a crash when overrunning an array of type names.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
79719347c8 framebuffer: split out CoglOnscreen code
This factors out the CoglOnscreen code from cogl-framebuffer.c so we now
have cogl-onscreen.c, cogl-onscreen.h and cogl-onscreen-private.h.
Notably some of the functions pulled out are currently namespaced as
cogl_framebuffer but we know we are planning on renaming them to be in
the cogl_onscreen namespace; such as cogl_framebuffer_swap_buffers().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
1a30f4fb15 Adds support for a mirrored repeat wrap mode
This adds COGL_PIPELINE_WRAP_MODE_MIRRORED_REPEAT enum so that mirrored
texture repeating can be used. This also adds support for emulating the
MIRRORED_REPEAT mode via the cogl-spans API so it can also be used with
meta textures such as sliced and atlas textures.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
1d8fd64e1c meta-texture: This publicly exposes CoglMetaTexture
CoglMetaTexture is an interface for dealing with high level textures
that may be comprised of one or more low-level textures internally. The
interface allows the development of primitive drawing APIs that can draw
with high-level textures (such as atlas textures) even though the
GPU doesn't natively understand these texture types.

There is currently just one function that's part of this interface:
cogl_meta_texture_foreach_in_region() which allows an application to
resolve the internal, low-level textures of a high-level texture.
cogl_rectangle() uses this API for example so that it can easily emulate
the _REPEAT wrap mode for textures that the hardware can't natively
handle repeating of.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
c11036cd13 spans: Represent spans with floating point precision
Instead of using integers to represent spans we now use floats instead.
This means we are no longer forced to iterate using non-normalized
coordinates so we should hopefully be able to avoid numerous redundant
unnormalize/normalize steps when using the spans api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
c7098e417d texture-2d-sliced: simplify _foreach_sub_texture_in_region
Since we can assume that all slices are CoglTexture2D textures we don't
need to chain on our implementation of _foreach_sub_texture_in_region
by calling _cogl_texture_foreach_sub_texture_in_region() for each slice.

We now simply determine the normalized virtual coordinates for the
current span inline and call the given callback inline too.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
426c8b8f41 features: Support more than 32 features!
Currently features are represented as bits in a 32bit mask so we
obviously can't have more than 32 features with that approach. The new
approach is to use the COGL_FLAGS_ macros which lets us handle bitmasks
without a size limit and we change the public api to accept individual
feature enums instead of a mask. This way there is no limit on the
number of features we can add to Cogl.

Instead of using cogl_features_available() there is a new
cogl_has_feature() function and for checking multiple features there is
cogl_has_features() which takes a zero terminated vararg list of
features.

In addition to being able to check for individual features this also
adds a way to query all the features currently available via
cogl_foreach_feature() which will call a callback for each feature.

Since the new functions take an explicit context pointer there is also
no longer any ambiguity over when users can first start to query
features.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
c86f698eb9 make COGL_FEATURE_VBOS a private feature
Cogl provides a consistent public interface regardless of whether the
underlying GL driver supports VBOs so it doesn't make much sense to have
this feature as part of the public api.  We can't break the api by
removing the enum but at least we no longer ever set the feature flag.

We now have a replacement private feature flag COGL_PRIVATE_FEATURE_VBOS
which cogl now checks for internally.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
69b44ac86d make COGL_FEATURE_PBOS a private feature
Cogl provides a consistent public interface regardless of whether the
underlying GL driver supports PBOs so it doesn't make much sense to have
this feature as part of the public api.  We can't break the api by
removing the enum but at least we no longer ever set the feature flag.

We now have a replacement private feature flag COGL_PRIVATE_FEATURE_PBOS
which cogl now checks for internally.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
d045bea70e make COGL_FEATURE_FOUR_CLIP_PLANES a private feature
Cogl doesn't currently expose public api for clip planes so it
doesn't make much sense to have this feature as part of the public api.
We can't break the api by removing the enum but at least we no longer
ever set the feature flag.

We now have a replacement private feature flag
COGL_PRIVATE_FEATURE_FOUR_CLIP_PLANES which cogl now checks for
internally.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
abbd28f484 make COGL_FEATURE_OFFSCREEN_BLIT a private feature
Cogl doesn't expose public api for blitting between framebuffers so it
doesn't make much sense to have this feature as part of the public api
currently. We can't break the api by removing the enum but at least we
no longer ever set the feature flag.

We now have a replacement private feature flag
COGL_PRIVATE_FEATURE_OFFSCREEN_BLIT which cogl now checks for
internally.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
b566170836 make COGL_FEATURE_STENCIL_BUFFER private
Although we have to leave the COGL_FEATURE_STENCIL_BUFFER enum as part
of the public api we no longer ever set this feature flag.

Cogl doesn't currently expose the concept of a stencil buffer in the
public api (we only indirectly expose it via the clip stack api) so it
doesn't make much sense to have a stencil buffer feature flag.

We now have a COGL_PRIVATE_FEATURE_STENCIL_BUFFER flag instead which
we can check when we need to use the buffer for clipping.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
6da3bff9b9 Remove beneign GL_MESA_ycbcr_texture check
Actual support for yuv textures isn't fully plumbed into Cogl currently
so the check for GL_MESA_ycbcr_texture is meaningless. For now we just
remove the check.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
d3114b168a pipeline-layer: fix win32 build issue
make sure to #include "cogl-texture-private.h" in cogl-pipeline-layer.c
otherwise the build fails on win32.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
eef5013751 primitives: make validate_first_layer_cb update override pipeline
This fixes validate_first_layer_cb so that it update the override
pipeline not the user's original pipeline. It also makes the check
for when to override the wrap mode more robust by considering that
we might add more wrap modes in the future.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
583dc893be spans: remove unused intersect_start/end_local members
There were simply two unused members in CoglSpanIter which this patch
removes.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
d92eaac3ec spans: only iterate spans within start-end range
To save users of the api having to manually check if each iterated span
intersects the region of interest we now guarantee that any span
iterated implicitly intersects the region of interest.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:00 +00:00
Robert Bragg
6253b09c69 texture-2d-sliced: make CoglTexture2DSliced public
This make the CoglTexture2DSliced type public and adds
cogl_texture_2d_sliced_new_with_size() as an experimental API that can
be used to construct a sliced texture without any initial data.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:02:59 +00:00
Robert Bragg
f6daed62e3 clip: Adds cogl_clip_push_primitive API
This adds a new experimental function, cogl_clip_push_primitive, that
allows you to push a CoglPrimitive onto the clip stack. The primitive
should describe a flat 2D shape and the geometry shouldn't include any
self intersections. When pushing a primitive you also need to tell
Cogl what the bounding box of that shape is (in shape local coordinates)
so that Cogl is able to efficiently update the required region of the
stencil buffer.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:02:59 +00:00
Robert Bragg
7a834cf681 primitive: Adds _cogl_primitive_draw api taking flags
This adds an internal _cogl_primitive_draw API that takes CoglDrawFlags
like _cogl_draw_attributes does which allows us to draw a primitive but
skip things like flushing journals, flushing framebuffer state and avoid
validating the current pipeline. This allows us to draw primitives in
places that could otherwise cause recursion.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:02:59 +00:00
Robert Bragg
fd2769f7e8 clip-stack: Move path flushing code to cogl-clip-stack.c
The code that adds the silhouette of a path to the stencil buffer was
living in cogl2-path.c which seemed out of place when the bulk of the
work really related more to how the stencil buffer is managed and
basically only one line (a call to _cogl_path_fill_nodes) really related
to the path code directly.

This moves the code into cogl-clip-stack.c alone with similar code
that can add rectangle masks to the stencil buffer.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:02:59 +00:00
Robert Bragg
a400aec51b path: handle slice tex fallback using clip stack
If we are asked to fill a path using any sliced textures then we need
to fallback to adding a mask of the path to the stencil buffer
and then drawing a bounding rectangle with the source textures instead.

Previously we were sharing some of the clip-stack code for adding
the path mask to the stencil buffer and being careful to check
that the current clip stack has been flushed already. We then made
sure to dirty the clip stack to be sure the path mask would be cleared
from the stencil buffer later.

This patch aims to simplify how this fallback is dealt with by just
using the public clipping API instead of relying on more fiddly tricks
to modify the stencil buffer directly without conflicting with the clip
stack.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:02:59 +00:00
Robert Bragg
a8efe6af06 framebuffer: Adds experimental _finish() API
This adds a new experimental function, cogl_framebuffer_finish(), which
can be used to explicitly synchronize the CPU with the GPU. It's rare
that this level of explicit synchronization is desirable but for example
it can be useful during performance analysys to make sure measurements
reflect the working time of the GPU not just the time to queue commands.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:02:55 +00:00
Robert Bragg
dd7b16faf2 offscreen: Adds support for offscreen multisampling
This adds support for multisample rendering to offscreen framebuffers.
After an offscreen framebuffer is first instantiated using
cogl_offscreen_new_to_texture() it is then possible to use
cogl_framebuffer_set_samples_per_pixel() to request multisampling before
the framebuffer is allocated. This also adds
cogl_framebuffer_resolve_samples() for explicitly resolving point
samples into pixels. Even though we currently only support the
IMG_multisampled_render_to_texture extension which doesn't require an
explicit resolve, the plan is to also support the
EXT_framebuffer_multisample extension which uses the framebuffer_blit
extension to issue an explicit resolve.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-10-28 19:10:16 +01:00
Robert Bragg
a74c81ada3 onscreen: Support multisample based onscreen rendering
This adds support for multisample based rendering of onscreen windows
whereby multiple point samples per pixel can be requested and if the
hardware supports that it results in reduced aliasing (especially
considering the jagged edges of polygons)

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-10-28 19:10:16 +01:00
Robert Bragg
98e5a9c777 Rework how we search for winsys configs
When creating new onscreen framebuffers we need to take the
configuration in cogl terms and translate that into a configuration
applicable to any given winsys, e.g. an EGLConfig or a GLXFBConfig
or a PIXELFORMATDESCRIPTOR.

Also when we first create a context we typically have to do a very
similar thing because most OpenGL winsys APIs also associate a
framebuffer config with the context and all future configs need to be
compatible with that.

This patch introduces an internal CoglFramebufferConfig to wrap up some
of the configuration parameters that are common to CoglOnscreenTemplate
and to CoglFramebuffer so we aim to re-use code when dealing with the
above two problems.

This patch also aims to rework the winsys code so it can be more
naturally extended as we start adding more configureability to how
onscreen framebuffers are created.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-10-28 19:10:16 +01:00
Robert Bragg
63461c0f8b framebuffer: Add explicit buffer discard API
This adds cogl_framebuffer_discard_buffers API that allows applications
to explicitly discard depth and stencil buffers which really helps when
using a tile based GPU architexture by potentially avoiding the need to
save the results of depth and stencil buffer changes to system memory
between frames since these can usually be handled directly with on-chip
memory instead.

The semantics for cogl_framebuffer_swap_buffers and
cogl_framebuffer_swap_region are now documented to include an implicit
discard of all buffers, including the color buffer.

We now recommend that all rendering to a CoglOffscreen framebuffer
should be followed by a call like:
cogl_framebuffer_discard_buffers (fb,
                                  COGL_BUFFER_BIT_DEPTH|
                                  COGL_BUFFER_BIT_STENCIL);

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-10-28 19:10:16 +01:00
Neil Roberts
49e733fcdc pipeline: Reset last_used_for_pipeline when the pipeline is destroyed
Both the GLSL and the ARBfp pipeline backends were using a variable
called last_used_for_pipeline to keep track of the last pipeline that
the shader or program state was used for. If this address is the same
as last time when the pipeline state is flushed then Cogl will only
flush the uniforms that have been modified, otherwise it will flush
all of them. The problem with this is that there was nothing to keep
that address alive so it could be destroyed and reused for a different
pipeline by the time the shader state is reused. This is quite likely
to happen in an application using legacy state because in that case
the shader state will always be used with a one-shot pipeline that
will likely be recycled in the next frame.

There is already a destroy callback to unref the shader state when the
pipeline is destroyed so this patch just makes that callback also
clear the last_used_for_pipeline pointer if it matches the pipeline
being destroyed.

https://bugzilla.gnome.org/show_bug.cgi?id=662542

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-10-24 14:29:02 +01:00
Neil Roberts
b85f5e0198 cogl-shader: Update the gtk-doc
This adds a description of the replacement Cogl names for the GLSL
builtins. It also updates some of the deprecation tags and corrects
some misinformation.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-10-21 12:24:01 +01:00
Neil Roberts
1d67085e8a cogl-winsys-egl: Use the abstraction to update the window size
Previously the EGL backend was directly prodding the width/height
members of the framebuffer structure when a configure notify event is
received. However this doesn't set the dirty flag for the viewport so
Cogl will continue using the wrong viewport y offset. The GLX backend
is already using an abstraction for updating the size which does set
the flag. This patch just makes the EGL backend also use that
abstraction.
2011-10-17 17:33:42 +01:00
Robert Bragg
8325ca00b8 build: removes unused variable i to avoid compiler warning
Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-10-17 13:57:29 +01:00
Neil Roberts
f628839771 Mark the debug options for translation
This adds the descriptions of the debug options to the list of
translatable strings.

https://bugzilla.gnome.org/show_bug.cgi?id=658700
2011-10-14 13:56:51 +01:00
Robert Bragg
5ab0b38657 pipeline: don't leak the layers_cache
When freeing a pipeline in _cogl_pipeline_free we weren't making sure to
free the layers_cache which was leading to a memory leak.

Thanks to Sunjin Yang for finding this.

https://bugzilla.gnome.org/show_bug.cgi?id=660986

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-10-12 15:29:07 +01:00
Robert Bragg
1f61868fed x11-tfp: don't call winsys x11_damage_notify without winsys
If we failed to create a native texture from pixmap via EGL or GLX then
we shouldn't call the winsys's texture_pixmap_x11_damage_notify
function. By doing the validation in cogl-texture-pixmap-x11.c the
winsys code can continue to assume that it doesn't need to verify there
is a valid tex_pixmap->winsys pointer.

Thanks to Damien Leone <dleone@nvidia.com> for catching this issue.

https://bugzilla.gnome.org/show_bug.cgi?id=660184
2011-10-12 14:24:44 +01:00
Damien Leone
895055c836 cogl-winsys-glx: fix texture format detection
The previous detection was based on color depth only to determine the
texture format to use in GLX. If that worked fine at depths 24 (RGB8)
and 32 (ARGB8), that would fail at depth 30 (BGR10) and fallback to
software instead of using the TFP extension.

This commit uses an efficient population count implementation to
compare the number of 1-bits in color masks against the color depth
requested by the X client. If they are not equal this means that an
alpha channel has been requested.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-10-01 16:44:55 +01:00
Neil Roberts
5aab8a2310 Add an option to avoid defining G_DISABLE_DEPRECATED
G_DISABLE_DEPRECATED is only intended for developers of Cogl and it
sometimes breaks the build for people just trying to build a
release. This patch adds an option to enable deprecated Glib
features. By default it is enabled for non-git versions of Cogl.

The patch is based on similar code in Clutter except it adds the flags
to COGL_EXTRA_CFLAGS instead of having a separate variable.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-09-27 10:27:19 +01:00
Chun-wei Fan
34181d34f5 Makefile.am: Update sources list
There is no cogl/cogl-pipeline-debug-private.h, so remove that from
Makefile.am

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-09-26 15:54:07 +01:00
Chun-wei Fan
98a9428967 cogl-pipeline/cogl-pango: Added forgotten includes
It seems that cogl-context-private.h needs to be included before including
any of the pipeline-related stuff to avoid build errors on C89 compilers.

This is due to the recent cogl-pipeline decoupling, seems like.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-09-26 15:53:30 +01:00
Robert Bragg
dd5208b0ba arbfp: assume GL_TEXTURE_2D target for NULL texture
During arbfp codegen we weren't checking for NULL textures and so we
would crash when trying to query a NULL texture's GL texture target.
Since NULL texture targets result in ctx->default_gl_texture_2d_tex
being bound we can assume that a NULL texture corresponds to a
GL_TEXTURE_2D target.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-23 15:31:07 +01:00
Robert Bragg
30f8521790 pipeline: optimize _compare_differences functions
This optimizes the layer and pipeline _compare_differences functions so
neither of them use the GArray api since building up the list of
ancestors by appending to a shared GArray was showing quite high on
profiles due to how frequently pipeline comparisons are made. Instead
we now build up a transient, singly linked list by allocating GList
nodes via alloca to build up the parallel lists of ancestors.

This tweaked approach actually ends up being a bit more concise than
before, we avoid the overhead of the GArray api and now avoid making any
function calls while comparing (assuming the _get_parent() calls always
inline), we avoiding needing to get the default cogl context.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-21 17:28:32 +01:00
Robert Bragg
f16d3756df pipeline: lazily get ctx in _get_layer
We only need a ctx pointer if we need to refer to the default_layer_x
layers to copy as templates so only call  _cogl_context_get_default()
once we need to copy a template. _cogl_context_get_default() was
starting to show up in profiles and this was the main cause.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-21 17:28:22 +01:00
Robert Bragg
d4459e2d42 pipeline: Split more code out from cogl-pipeline.c
This splits out the core CoglPipelineLayer support code from
cogl-pipeline.c into cogl-pipeline-layer.c; it splits out the debugging
code for dumping a pipeline to a .dot file into cogl-pipeline-debug.c
and it splits the CoglPipelineNode support which is shared between
CoglPipeline and CoglPipelineLayer into cogl-node.c.

Note: cogl-pipeline-layer.c only contains the layer code directly
relating to CoglPipelineLayer objects; it does not contain any
_cogl_pipeline API relating to how CoglPipeline tracks and manipulates
layers.
2011-09-21 17:03:10 +01:00
Robert Bragg
77a7add50e attributes: optimize validation of tex_coord%d_in names
This avoids using sscanf to determine the texture_unit that a
tex_coord%d_in attribute name corresponds to since that was showing high
on profiles. Instead once we know we have a "tex_coord" name then we
can simply use strtoul which is much cheaper and use the returned endptr
we get to verify we have a "_in" suffix after the number.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-21 15:50:13 +01:00
Robert Bragg
d739892a5c primitive: micro optimize primitive allocations
We've started seeing cases where we want to allocate lots of one-shot
primitives per-frame and the cost of allocating primitives becomes
important in this case since it can start being noticeable in profiles.

The main cost for allocating primitives was the GArray allocation
and appending the attributes to the array. This updates the code to
simply over allocate the primitive storage so we can embed the list
of attributes directly in that allocation.

If the user later sets new attributes and there isn't enough embedded
space then a separate slice allocation for the new attributes is made
but still this should be far less costly than using a GArray as before.
Most of the time we would expect when setting new attributes there will
still be the same number of attributes, so the embedded space can simple
be reused.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-21 15:50:08 +01:00
Robert Bragg
791773987c attributes: avoid g_strdup in cogl_attribute_new
Calling g_strdup for attribute names was starting to show up in profiles
due to calling malloc for new string storage so frequently. This avoids
calling g_strdup and calls g_intern_string() instead. For the really
common case names we even avoid the cost of g_intern_string since we
can trivially relate our internal name_id to a static string.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-09-21 15:39:46 +01:00