Commit Graph

828 Commits

Author SHA1 Message Date
Neil Roberts
9343cb849a cogl-gles2: Prefix internal GLES 2 wrapper symbols with _
Some internal symbols used for the GLES 2 wrapper were accidentally
being exported. This prepends an underscore to them so they won't
appear in the shared library.
2010-06-11 16:06:31 +01:00
Neil Roberts
0bbf50f905 cogl-clip-stack: Always use the scissor when clipping
Whenever a path or a rectangle is added to the clip stack it now also
stores a screen space bounding box in the entry. Then when the clip
stack is flushed the bounding box is first used to set up the
scissor. That way when we eventually come to use the stencil buffer
the clear will be affected by the scissor so we don't have to clear
the entire buffer.
2010-06-10 21:52:55 +01:00
Neil Roberts
5a71ff4cdd cogl-path: Export _cogl_path_get_bounds
_cogl_path_get_bounds is no longer static and is exported in
cogl-path-private.h so that it can be used in the clip stack code. The
old version of the function returned x/y and width/height. However
this was mostly used to call cogl_rectangle which takes x1/y1
x2/y2. The function has been changed to just directly return the
second form because it is more useful. Anywhere that was previously
using the function now just directly looks at path->path_nodes_min and
path->path_nodes_max instead.
2010-06-10 21:52:54 +01:00
Neil Roberts
a9da7d72db cogl-clip-state: Export transform_point internally to Cogl
The transform_point function takes a modelview matrix, projection
matrix and a viewport and performs all three transformations on a
point to give a Cogl window coordinate. This is useful in a number of
places in Cogl so this patch moves it to cogl.c and adds it to
cogl-internal.h
2010-06-10 21:52:49 +01:00
Sunil Sadasivan
4abd42aced cogl_texture_get_data() copies using wrong width size.
For sliced 2D textures, _cogl_texture_2d_sliced_get_data() uses the
bitmap width, instead of the rowstride, when memcpy()ing into the
dest buffer.

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2010-06-10 20:58:22 +01:00
Damien Lespiau
98f2d2516b cogl-color: Provide setters for all the channels
We only had getters for the red, green, blue and alpha channels of a
color. This meant that, if you wanted to change, say, the alpha
component of a color, one would need to query the red, green and blue
channels and use set_from_4ub() or set_from_4f().

Instead of this, just provide some setters for CoglColor, using the same
naming scheme than the existing getters.
2010-06-10 20:02:01 +01:00
Damien Lespiau
896dd975d1 cogl-color: Add cogl_color_unpremultiply()
For some operations on pre-multiplied colors (say, replace the alpha
value), you need to unpremultiply the color.

This patch provides the counterpart to cogl_color_premultiply().
2010-06-10 20:01:48 +01:00
Emmanuele Bassi
2ba6ab6dbc cogl: Initialize the framebuffer bits on state flush
The place where we actually change the framebuffer is
_cogl_framebuffer_flush_state(), so if we changed to a new frame buffer
we need to initialize the color bits there.

http://bugzilla.openedhand.com/show_bug.cgi?id=2094
2010-06-10 19:55:18 +01:00
Emmanuele Bassi
7a7dedebd5 cogl-framebuffer: Use the FBO extension for color sizes
OpenGL 3.0 deprecated querying of the GL_{RED,GREEN,BLUE}_BITS
constants, and the FBO extension provides a mechanism to query for the
color buffer sizes which *should* work even with the default
framebuffer. Unfortunately, this doesn't seem to hold for Mesa - so we
just use this for the offscreen CoglFramebuffer type, and we fall back
to glGetIntegerv() for the onscreen one.

http://bugzilla.openedhand.com/show_bug.cgi?id=2094
2010-06-10 19:53:39 +01:00
Emmanuele Bassi
3c4451cd84 cogl: Hide cogl_framebuffer_get_*_bits()
These accessors should be private, for the time being.

http://bugzilla.openedhand.com/show_bug.cgi?id=2094
2010-06-10 19:06:37 +01:00
Neil Roberts
cce5616edf cogl-material: Fix the function which sets the enable blend flag
This function had two problems. Firstly it would clear the enable
blend flag before calling pre_change_notify so that if blending was
previously enabled the journal would end up being flushed while the
flag was still cleared. Secondly it would call the pre change notify
whenever blending is needed regardless of whether it was already
needed previously.

This was causing problems in test-depth.
2010-06-09 17:26:15 +01:00
Robert Bragg
82e80e6765 material: Avoid redundant glBindTexture calls
This adds a _cogl_bind_gl_texture_transient function that should be used
instead of glBindTexture so we can have a consistent cache of the
textures bound to each texture unit so we can avoid some redundant
binding.
2010-06-09 17:26:15 +01:00
Robert Bragg
acc44161c1 material: Adds backend abstraction for fragment processing
As part of an effort to improve the architecture of CoglMaterial
internally this overhauls how we flush layer state to OpenGL by adding a
formal backend abstraction for fragment processing and further
formalizing the CoglTextureUnit abstraction.

There are three backends: "glsl", "arbfp" and "fixed". The fixed backend
uses the OpenGL fixed function APIs to setup the fragment processing,
the arbfp backend uses code generation to handle fragment processing
using an ARBfp program, and the GLSL backend is currently only there as
a formality to handle user programs associated with a material. (i.e.
the glsl backend doesn't yet support code generation)

The GLSL backend has highest precedence, then arbfp and finally the
fixed. If a backend can't support some particular CoglMaterial feature
then it will fallback to the next backend.

This adds three new COGL_DEBUG options:
* "disable-texturing" as expected should disable all texturing
* "disable-arbfp" always make the arbfp backend fallback
* "disable-glsl" always make the glsl backend fallback
* "show-source" show code generated by the arbfp/glsl backends
2010-06-09 17:15:59 +01:00
Neil Roberts
8ebf76a9a9 cogl-atlas-texture: Flush the journal before starting blit not after
_cogl_atlas_texture_blit_begin binds a texture to use as the
destination and it expects it to stay bound until
_cogl_atlas_texture_end_blit is called. However there was a call to
_cogl_journal_flush directly after setting up the blit state which
could cause the wrong texture to be bound. This just moves the flush
to before the call to _cogl_atlas_texture_blit_begin.

This was breaking test-cogl-sub-texture.
2010-06-09 15:22:05 +01:00
Robert Bragg
4ac3133208 atlas: fix some journal flushing issues
1) Always flush when migrating textures out of an atlas because although
it's true that the original texture data will remain valid in the
original texture we can't assume that journal entries have resolved the
GL texture that will be used. This is only true if a layer0_override has
been used.

2) Don't flush at the point of creating a new atlas simply flush
immediately before reorganizing an atlas. This means we are now assuming
that we will never see recursion due to atlas textures being modified
during a journal flush. This means it's the responsibility of the
primitives code to _ensure_mipmaps for example not the responsibility of
_cogl_material_flush_gl_state.
2010-06-09 15:19:31 +01:00
Robert Bragg
a21d909129 primitives: make sure to update texture storage before drawing
We want to make sure that the material state flushing code will never
result in changes to the texture storage for that material. So for
example mipmaps need to be ensured by the primitives code.

Changes to the texture storage will invalidate the texture coordinates
in the journal and we want to avoid a recursion of journal flushing.
2010-06-09 15:19:31 +01:00
Robert Bragg
1047c1c082 matrix: add cogl_matrix_equal API
This adds a way to compare two CoglMatrix structures to see if they
represent the same transformations. memcmp can't be used because a
CoglMatrix contains private flags and padding.
2010-06-09 15:19:31 +01:00
Damien Lespiau
8ee099d204 cogl-material: Use fragment programs instead of texture env combiners
THIS IS A WORK IN PROGRESS

Mesa is building a big shader when using ARB_texture_env_combine. The
idea is to bypass that computation, do it ourselves and cache the
compiled program in a CoglMaterial.

For now that feature can be enabled by setting the COGL_PIPELINE
environment variable to "arbfp". COGL_SHOW_FP_SOURCE can be set to a non
empty string to dump the fragment program source too.

TODO:
  * fog (really easy, using OPTION)
  * support tex env combiner operands, DOT3, ADD_SIGNED, INTERPOLATE
    combine modes (need refactoring the generation of temporary
    variables) (not too hard)
  * alpha testing for GLES 2.0?
2010-06-09 15:19:30 +01:00
Damien Lespiau
56dd71dba0 cogl: Introduce private feature flags and check for ARB_fp
The Cogl context has now a feature_flags_private enum that will allow us
to query and use OpenGL features without exposing them in the public
API.

The ARB_fragment_program extension is the first user of those flags.
Looking for this extension only happens in the gl driver as the gles
drivers will not expose them.

One can use _cogl_features_available_private() to check for the
availability of such private features.

While at it, reindent cogl-internal.h as described in CODING_STYLE.
2010-06-09 15:19:30 +01:00
Neil Roberts
8836c868a4 cogl-gles2-wrapper: Fix some cases using the wrong texture unit
At two places in cogl_wrap_prepare_for_draw it was trying to loop over
the texture units to flush some state. However it was retrieving the
texture unit pointer using w->active_texture_unit instead of the loop
index so it would end up with the wrong state.

Also in glEnableClientState it was using the active unit instead of
the client active unit.
2010-06-08 17:26:26 +01:00
Damien Lespiau
2e52c5f67b doc: Some fixes for the Cogl documentation
• 3 general fixes (typos, copy/paste),
 • ignore cogl-object-private.h,
 • cogl_fixed_atani() was in reality cogl_fixed_atan(), fixed in commit
   43564f05.
 • Fix the cogl-vector section: sections must have a </SECTION> tag at
   the end. Also the cogl-vector section was added in the middle of the
   cogl-buffer one. Let's shiffle it out and add that </SECTION> tag.
2010-06-07 14:32:32 +01:00
Damien Lespiau
7fa011b037 build: Don't distribute clutter-version.h and cogl-defines.h
As with a351ff2af earlier, distributing headers generated at configure
time conflicts with out of tree builds as the distributed headers will
be included first instead of including the generated ones.
2010-06-04 17:43:57 +01:00
Robert Bragg
7dbcb82622 cogl-object-private.h: white space cleanup
simply replaces tabs with spaces
2010-06-04 14:44:15 +01:00
Robert Bragg
d02d40bf61 CoglObject: Adds a COGL_OBJECT macro for casting
This adds a convenience COGL_OBJECT macro for casting CoglObject
subclasses to (CoglObject *) pointers.
2010-06-04 14:44:15 +01:00
Robert Bragg
5af3ead3a2 CoglObject: Adds cogl_object_{get,set}_user_data
This provides a mechanism for associating private data with any
CoglObject. We expect Clutter will use this to associate weak materials
with normal materials.
2010-06-04 14:44:15 +01:00
Robert Bragg
ef08c6369a cogl-path: Adds missing cogl_is_path prototype
This adds a missing cogl_is_path prototype to the public cogl-path.h
header.
2010-06-04 14:44:15 +01:00
Robert Bragg
368dc48372 cogl-path: Renames cogl_path_get/set cogl_get/set_path
These aren't path methods so aren't consistent with the
cogl_object_method naming style we are aiming for.
2010-06-04 14:44:15 +01:00
Damien Lespiau
63eeaa86ea build: Distribute cogl-object.h
cogl-object.h is a new public header. Include it in the right list of
source files to have it distributed.
2010-06-03 11:41:03 +01:00
Emmanuele Bassi
cd7c1dca76 docs: Miscellaneous fixes to silence gtk-doc 2010-06-01 14:15:03 +01:00
Robert Bragg
595271ac87 clip_stack: Remove use of CoglHandle in the CoglClipStack API
This replaces the use of CoglHandle with strongly type CoglClipStack *
pointers instead. The only function not converted for now is
cogl_is_clip_stack which will be done in a later commit.
2010-06-01 12:20:59 +01:00
Robert Bragg
653d1a3254 bitmap: Remove use of CoglHandle in the CoglBitmap API
This replaces the use of CoglHandle with strongly type CoglBitmap *
pointers instead. The only function not converted for now is
cogl_is_bitmap which will be done in a later commit.
2010-06-01 12:20:59 +01:00
Robert Bragg
817c1cddcc path: Remove use of CoglHandle in the CoglPath API
This replaces the use of CoglHandle with strongly type CoglPath *
pointers instead. The only function not converted for now is
cogl_is_path which will be done in a later commit.
2010-06-01 12:20:58 +01:00
Robert Bragg
5f8fadeb1c cogl: avoid ‘_cogl_xyz_handle_new’ defined but not used warnings
This patch makes it so that only the backwards compatibility
COGL_HANDLE_DEFINE macro defines a _cogl_xyz_handle_new function. The
new COGL_OBJECT_DEFINE macro only defines a _cogl_xyz_object_new
function.
2010-06-01 12:20:58 +01:00
Damien Lespiau
db7cc5b1b4 analysis: Fix some CoglFixed API
2 functions where not correctly defined/documented, use the actual
symbol name instead.
2010-06-01 12:08:18 +01:00
Damien Lespiau
45a947d226 analysis: Use static functions when possible
It's best to ensure the functions only used in one compilation unit are
marked as static so GCC can inline them if it feels like it.
2010-06-01 12:08:18 +01:00
Damien Lespiau
338a37d468 analysis: Make all function declarations be protoypes
It's valid C to declare a function omitting it prototype, but it seems
to be a good practise to always declare a function with its
corresponding prototype.
2010-06-01 12:08:18 +01:00
Damien Lespiau
58b0028b52 analysis: FALSE/0 used in pointer context
While this is totally fine (0 in the pointer context will be converted
in the right internal NULL representation, which could be a value with
some bits to 1), I believe it's clearer to use NULL in the pointer
context.

It seems that, in most case, it's more an overlook than a deliberate
choice to use FALSE/0 as NULL, eg. copying a _COGL_GET_CONTEXT (ctx, 0)
or a g_return_val_if_fail (cond, 0) from a function returning a
gboolean.
2010-06-01 12:08:18 +01:00
Robert Bragg
3aaef72e50 buffer: Remove use of CoglHandle in the CoglBuffer API
This replaces the use of CoglHandle with strongly type CoglBuffer *
pointers instead. The only function not converted for now is
cogl_is_buffer which will be done in a later commit.
2010-05-28 18:42:33 +01:00
Robert Bragg
7bcea1c64e Start eradicating the CoglHandle typedef
CoglHandle is a common source of complaints and confusion because people
expect a "handle" to be some form of integer type with some indirection
to lookup the corresponding objects as opposed to a direct pointer.

This patch starts by renaming CoglHandle to CoglObject * and creating
corresponding cogl_object_ APIs to replace the cogl_handle ones.

The next step though is to remove all use of CoglHandle in the Cogl APIs
and replace with strongly typed pointer types such as CoglMaterial * or
CoglTexture * etc also all occurrences of COGL_INVALID_HANDLE can just
use NULL instead.

After this we will consider switching to GTypeInstance internally so we
can have inheritance for our types and hopefully improve how we handle
bindings.

Note all these changes will be done in a way that maintains the API and
ABI.
2010-05-28 18:39:22 +01:00
Neil Roberts
0f32fb4acd cogl-texture-2d: Regenerate the mipmaps when the texture is modified
When the texture is modified by cogl_texture_set_region, it wasn't
setting mipmaps_dirty so it would never update the mipmaps.
2010-05-28 18:13:53 +01:00
Robert Bragg
4c1a12d824 [material] fix _set_alpha_test_function: missing a glEnable(GL_ALPHA_TEST)
Since the default alpha test function of GL_ALWAYS is equivalent to
GL_ALPHA_TEST being disabled we don't need to worry about Enabling/Disabling
it when flushing material state, instead it's enough to leave it always
enabled.  We will assume that any driver worth its salt wont incur any
additional cost for glEnable (GL_ALPHA_TEST) + GL_ALWAYS vs
glDisable (GL_ALPHA_TEST).

This patch simply calls glEnable (GL_ALPHA_TEST) in cogl_create_context
2010-05-28 15:35:23 +01:00
Neil Roberts
5a1cffd0bb cogl-vertex-buffer: Don't disable any texture coord arrays
The enabled state of the texture coord arrays is cached in the cogl
context so there is no need to disable them when we've finished
rendering a vbo.
2010-05-27 14:54:14 +01:00
Neil Roberts
97fd2c368e cogl: Record new enabled arrays in _cogl_disable_other_texcoord_arrays
When _cogl_disable_other_texcoord_arrays is called it disables the
neccessary texcoord arrays and then removes the bits for the disabled
arrays in ctx->texcoord_arrays_enabled. However none of the places
that call the function then set any bits in ctx->texcoord_arrays_enabled
so the arrays would never get marked and they would never get disabled
again.

This patch just changes it so that _cogl_disable_other_texcoord_arrays
also sets the corresponding bits in ctx->texcoord_arrays_enabled.
2010-05-27 14:51:44 +01:00
Neil Roberts
aaf5600b2d cogl: Use a CoglBitmask to store the list of used texcoord arrays
Instead of directly using a guint32 to store a bitmask for each used
texcoord array, it now stores them in a CoglBitmask. This removes the
limitation of 32 layers (although there are still other places in Cogl
that imply this restriction). To disable texcoord arrays code should
call _cogl_disable_other_texcoord_arrays which takes a bitmask of
texcoord arrays that should not be disabled. There are two extra
bitmasks stored in the CoglContext which are used temporarily for this
function to avoid allocating a new bitmask each time.

http://bugzilla.openedhand.com/show_bug.cgi?id=2132
2010-05-24 16:10:57 +01:00
Neil Roberts
4fb784d111 cogl: Add an internal CoglBitmask type
This implements a growable array of bits called CoglBitmask. The
CoglBitmask is intended to be cheap if less than 32 bits are used. If
more bits are required it will allocate a GArray. The type is meant to
be allocated on the stack but because it can require additional
resources it also has a destroy function.

http://bugzilla.openedhand.com/show_bug.cgi?id=2132
2010-05-24 16:10:56 +01:00
Neil Roberts
52cbc93b18 cogl-material: Fix the count of the number of layers
Previously the counter for the number of layers was only updated
whenever the texture handle for a layer changes. However there are
many other ways for a new layer to be created for example by setting a
layer combine constant. Also by default the texture on a layer is
COGL_INVALID_HANDLE so if the application tries to create an explicit
layer with no texture by calling cogl_material_set_layer with
COGL_INVALID_HANDLE then it also wouldn't update the count.

This patch fixes that by incrementing the count in
cogl_material_get_layer instead. This function is called by all
functions that may end up creating a layer so it seems like the most
appropriate place.

http://bugzilla.openedhand.com/show_bug.cgi?id=2132
2010-05-24 16:10:56 +01:00
Neil Roberts
992d5f7fb6 cogl-vertex-buffer: Don't disable layers with no texture coords
It should be quite acceptable to use a texture without defining any
texture coords. For example a shader may be in use that is doing
texture lookups without referencing the texture coordinates. Also it
should be possible to replace the vertex colors using a texture layer
without a texture but with a constant layer color.

enable_state_for_drawing_buffer no longer sets any disabled layers in
the overrides. Instead of counting the number of units with texture
coordinates it now keeps them in a mask. This means there can now be
gaps in the list of enabled texture coordinate arrays. To cope with
this, the Cogl context now also stores a mask to track the enabled
arrays. Instead of code manually iterating each enabled array to
disable them, there is now an internal function called
_cogl_disable_texcoord_arrays which disables a given mask.

I think this could also fix potential bugs when a vertex buffer has
gaps in the texture coordinate attributes that it provides. For
example if the vertex buffer only had texture coordinates for layer 2
then the disabling code would not disable the coordinates for layers 0
and 1 even though they are not used. This could cause a crash if the
previous data for those arrays is no longer valid.

http://bugzilla.openedhand.com/show_bug.cgi?id=2132
2010-05-24 16:10:56 +01:00
Emmanuele Bassi
99c7e51145 Merge branch 'wip/state-machine'
* wip/state-machine:
  Do not use wildcards in test-state
  script: Implement State deserialization
  state: added a "target-state" property
  state: documented data structures
  Add State interactive tests to the ignore file
  state: Documentation and introspection annotation fixes
  state: Minor coding style fixes
  state: Clean up the header's documentation
  state: Constify StateKey accessors
  Do not include clutter.h from a Clutter header file
  state-machine: made clutter_state_change take a boolean animate argument
  state-machine: use clutter_timeline_get_progress
  state-machine: add completed signal
  state machine: added state machine

Conflicts:
	.gitignore
2010-05-24 10:42:03 +01:00
Emmanuele Bassi
94c1614164 Merge branch 'wip/framebuffer-bits'
* wip/framebuffer-bits:
  Implement accessors for the color bits in a framebuffer
2010-05-21 14:38:37 +01:00
Emmanuele Bassi
6696b4ff43 Merge branch 'wip/constraints'
* wip/constraints: (24 commits)
  Add the Cogl API reference to the fixxref extra directories
  Document the internal MetaGroup class
  Remove the construct-only flag from ActorMeta:name
  doc: Remove gtk-doc annotations from the json-glib copy
  doc: Fix parameter documentation
  Add named modifiers for Action and Constraint
  Remove a redundant animation
  Set the stage resizable in test-constraints
  Use a 9 grid for the constraints test
  Miscellaneous documentation fixes
  docs: Document animating action and constraint properties
  docs: Document BindConstraint and AlignConstraint
  constraint: Rename BindConstraint:bind-axis
  constraints: Add AlignConstraint
  tests: Add a constraints interactive test
  constraint: Add BindConstraint
  actor: Implement Animatable
  animation: Use the new Animatable API for custom properties
  animatable: Add custom properties to Animatable
  constraint: Add ClutterConstraint base class
  ...

Conflicts:
	configure.ac
2010-05-21 10:55:09 +01:00