Commit Graph

1761 Commits

Author SHA1 Message Date
Neil Roberts
da7971f6be Don't set GL_TEXTURE_MAX_LEVEL on GLES
GL_TEXTURE_MAX_LEVEL is not supported on GLES so we can't set it. It
looks like Mesa was letting us get away with this but on other drivers
it may cause errors. The enum is not defined in the GLES headers so it
was failing to compile unless the GL driver is also enabled.

The test-texture-mipmap-get-set test is now marked as n/a on GLES2
because it can't support limiting the sampled mipmaps.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit ba51c393818582b058f5f1e66cf8d13835ad10e5)

Conflicts:
	tests/conform/test-conform-main.c
2013-01-25 18:21:09 +00:00
Neil Roberts
9a242832dc Add some defines that are missing on GLES
The GLES2 driver wasn't compiling unless the GL driver is also enabled
because some run-time conditional code was directly using GL-only
defines.

This should also fix compiling using the stock GL headers on OS X
which don't define GL_NUM_EXTENSIONS.

https://bugzilla.gnome.org/show_bug.cgi?id=692420

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 661e1719aa0b95c409c568ec91ea52b8ff90519b)
2013-01-25 18:21:09 +00:00
Neil Roberts
a749c7c1ab Query rectangle tex parameters when creating a foreign texture on GL3
Previously when creating a foreign rectangle texture it would ignore
the passed in texture information and query the texture directly when
using COGL_DRIVER_GL. However this should also work for
COGL_DRIVER_GL3. This patch changes it to check the private feature
flags for the texture querying feature instead of directly checking
the driver value.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 258c98b82027cb5074afe7844ff3954bbe928757)
2013-01-25 18:21:09 +00:00
Neil Roberts
5d6160c751 Replace some #if HAVE_COGL_GL lines with #ifdef
This was generating warnings when the GL driver is disabled.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit f26682dcc04642fed9db959c63d6c6e4261d2148)

Conflicts:
	cogl/cogl-auto-texture.c
2013-01-25 18:21:09 +00:00
Robert Bragg
d521b61a49 egl: support EGL_EXT_buffer_age
This adds support for the EGL_EXT_buffer_age extension which is a
counterpart to the GLX_EXT_buffer_age extension.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 92d869764c03d0bac6b51dac833510c22669ac4a)
2013-01-23 17:58:20 +00:00
Adel Gadllah
860fb00fdc cogl-onscreen: Add buffer_age support
Add a new BUFFER_AGE winsys feature and a get_buffer_age method to
cogl-onscreen that allows to query the value.

https://bugzilla.gnome.org/show_bug.cgi?id=669122

Reviewed-by: Neil Roberts <neil@linux.intel.com>
Reviewed-by: Robert Bragg <robert@linux.intel.com>

Note: When landing the patch I made some gtk-doc updates and changed
_get_buffer_age to return an age of 0 always if the age feature isn't
support instead of using _COGL_RETURN_VAL_IF_FAIL. -- Robert Bragg

(cherry picked from commit 427b1038051e9b53a071d8c229b363b075bb1dc0)
2013-01-23 17:58:10 +00:00
Adam Jackson
9fb0cbd45d meta-texture: Fix nonsensical <= on pointers
Comparing the pointed-to value is clearly what was meant.

Found by Coverity.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit f676352210fad856ae85962733e488bc1a832411)
2013-01-22 20:11:25 +00:00
Patrick Welche
8c319e4bc1 Remove vestiges of libdl / dlfcn.h as cogl uses gmodule.
https://bugzilla.gnome.org/show_bug.cgi?id=691944

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 397e673446e86a9116cb7396ea094e9f8b46986e)
2013-01-22 18:00:11 +00:00
Neil Roberts
51f3e28c1f bitmap: Don't try to token paste the typenames from stdint.h
Previously the functions for packing and unpacking pixels where
generated by token pasting together a function name along with its
type, like the following:

 _cogl_pack_ ## uint8_t

Then later in cogl-bitmap-conversion.c it would directly refer to the
function names without token pasting.

This wouldn't work however if the system headers define the stdint
types using #defines instead of typedefs because in that case the
function name generated using token pasting would get the expanded
type name but the reference that doesn't use token pasting wouldn't.

This patch adds an extra macro passed to the cogl-bitmap-packing.h
header which just has the type size. That way the function can be
defined like this instead:

 _cogl_pack_ ## 8

That should prevent it from hitting problems with #defined types.

https://bugzilla.gnome.org/show_bug.cgi?id=691945

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit d6b5d7085b004ebd48c1543b820331802395ee63)
2013-01-22 18:00:11 +00:00
Robert Bragg
50005a9364 build: update to build with automake 1.13
This make autogen.sh look for automake-1.13 and also updates all
Makefile.am files to no longer use the INCLUDES variable which automake
1.13 warns is deprecated by AM_CPPFLAGS.

https://bugzilla.gnome.org/show_bug.cgi?id=690891

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 5de5569e960102afe979a5f2f0403e1defebca62)
2013-01-22 18:00:05 +00:00
Robert Bragg
1d31055ddb disable viewport scissor workaround for clear
We have a workaround in Cogl to fix viewport clipping with Mesa Intel
Gen 6 drivers but this was breaking the semantics of
cogl_framebuffer_clear() which should not be affected by viewport
clipping. This makes sure we disable and restore the workaround when
clearing the framebuffer. This fixes Clutter's test-cogl-viewport
conformance test.
2013-01-22 17:48:19 +00:00
Neil Roberts
3a041ef41b Reorder some struct members to avoid padding due to alignment
This tweaks the ordering of some struct members in some of the more
important structs so that the compiler won't insert wasted padding to
avoid breaking the alignment. Some members that were previously
unsigned long have been changed to unsigned int. These members need to
be able to fit in 32-bits to run on 32-bit machines anyway so there's
no point in having them extend to 64-bit on 64-bit machines. This
doesn't affect the public API.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit b721af236680005464e39f7f4dd11381d95efb16)
2013-01-22 17:48:19 +00:00
Neil Roberts
7572fedeaa Fix filling the array of texture pointers for sliced textures
In commit 1fa7c0f10a8a0 the sliced texture code which creates the
array of pointers to the texture slices was changed so that the
textures are appended to the end of the array instead of initially
creating the array with the right size upfront and then shrinking the
array on error. However it was then still also setting the size of the
array after creating it so the new textures would actually end up in
an unused part of the array. The part of the array that is used was
left unitialised so it would crash. This just removes the call to set
the size of the array.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 7df09d505ba28a1a960df867346af67118e96718)
2013-01-22 17:48:19 +00:00
Neil Roberts
82615e292d Don't try to use clip planes on GL3
GL3 has support for clip planes but they are used differently and
involve writing to a builtin output variable in the vertex shader. The
current clip plane code assumes it is only used with a fixed function
driver and tries to directly push to the matrix builtins. This
obviously won't work on GL3 so for now let's just disable clip planes.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 5f621589467ab961f5130590298dc8e26d658a92)
2013-01-22 17:48:19 +00:00
Neil Roberts
988486ac7d framebuffer: Support the GL_RED texture workaround when querying bits
When a component-alpha texture is made using a GL3 context a GL_RED
texture is actually used and a swizzle is set up to hide it. However
if a framebuffer is then bound to that texture then when the bits are
queried this workaround will leak out of the API. To fix this it now
detects the situation and reports the number of red bits as the number
of alpha bits.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 425cfb2675912a2cbcaaaeed7c2196d563948222)
2013-01-22 17:48:19 +00:00
Neil Roberts
520ccba49d Query the framebuffer stencil bits instead of assuming it's global
Previously when the context was initialised Cogl would query the
number of stencil bits and set a private feature flag to mark that it
can use the buffer for clipping if there was at least 3. The problem
with this is that the number of stencil bits returned by
GL_STENCIL_BITS depends on the currently bound framebuffer. This patch
adds an internal function to query the number of stencil bits in a
framebuffer and makes it use that instead when determining whether it
can push the clip using the stencil buffer.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit e928d21516a6c07798655341f4f0f8e3c1d1686c)
2013-01-22 17:48:18 +00:00
Neil Roberts
109e576b1f Add a public cogl_framebuffer_get_depth_bits() function
Cogl publicly exposes the depth buffer state so we might as well have
a function to query the number of depth bits of a framebuffer.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 853143eb10387f50f8d32cf09af31b8829dc1e01)
2013-01-22 17:48:18 +00:00
Neil Roberts
0b01c91fc5 framebuffer: Bind the framebuffer before querying the bits
The GL framebuffer driver now makes sure to bind the framebuffer
before counting the number of bits. Previously it would just query the
number of bits for whatever framebuffer happened to be used last.

In addition the virtual for querying the framebuffer bits has been
modified to take a pointer to a structure instead of a separate
pointer to each component. This should make it slightly more efficient
and easier to maintain.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit e9c58b2ba23a7cebcd4e633ea7c3191f02056fb5)
2013-01-22 17:48:18 +00:00
Neil Roberts
fe3aa8b8b3 Query glX* functions before getting the context to fix GL3 driver
The GL3 context is created using the glXCreateContextAttribs function
which is part of the GLX_ARB_create_context extension. However
previously the function pointers from GLX extensions were only
retrieved once the GL context is created. That meant that the GL3
context creation function would always assume that the extension is
not supported so it would always fail.

This patch changes it to query the functions when the renderer is set
up instead. The base winsys feature flags that are determined while
querying the functions are stored in a member of CoglGLXRenderer.
These are then copied to the CoglContext when it is initialised.

The spec for glXGetProcAddress says that the functions returned are
context-independent. That implies that it is safe to call it without
binding a context although that is not explicitly stated as far as I
can tell. A big of googling finds this DRI documentation which says it
can be used without a context:

http://dri.freedesktop.org/wiki/glXGetProcAddressNeverReturnsNULL

And also this code sample:

http://www.opengl.org/wiki/Tutorial:_OpenGL_3.0_Context_Creation_%28GLX%29

One point that makes me concerned that this might not always work in
practice is that the code in SDL2 to create a GL3 context first
creates a dummy GL2 context in order to have something bound before it
calls glXGetProcAddress. I think this may just be a misunderstanding
based on how wglGetProcAddress works however.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 04a7aca9a98e84e43ac5559305a1358112902e30)
2013-01-22 17:48:18 +00:00
Neil Roberts
671275ba36 Also flip the virtual coordinates when iterating spans
_cogl_texture_spans_foreach_in_region first swaps over the texture
coordinates if they are flipped so that it can always iterate in a
positive direction. It sets a flag so that it will remember that the
coordinates are flipped. Before invoking the callback it is meant to
reflip the coordinates so that the callee doesn't need to be aware of
the flipping. However it was only flipping the sub-texture coordinates
and not the virtual coordinates. This was causing sliced textures to
draw their slice rectangles with the wrong geometry.
test-backface-culling was failing because of this.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit e7338a1e09cb22151374aefa6f0bb58485af9189)
2013-01-22 17:48:18 +00:00
Neil Roberts
a2aa04f219 texture-2d-slice: Fix the foreach_sub_texture_in_region implementation
There were a few problems with the sub texture iterating code of
sliced textures which were causing some conformance tests to fail when
NPOT textures are disabled:

• The spans are stored in un-normalized coordinates and the
  coordinates passed to the foreach function are normalized. The
  function was trying to un-normalize them before passing them to the
  span iterator code but it was using the wrong factor which was
  causing it to actually doubley normalize them.

• The shim function to renormalize the coordinates before passing them
  to the callback was renormalizing the sub-texture coordinates
  instead of the virtual coordinates. The sub-texture coordinates are
  already in the right scale for whatever is the underlying texture so
  we don't need to touch them. Instead we need to normalize the
  virtual coordinates because these are coming from the un-normalized
  coordinates that we passed to the span iterating code.

• The normalize factors passed to the span iterating were always 1.
  The code uses this normalizing factor to round the incoming
  coordinates to the nearest multiple of a full texture. It divides
  the coordinates by the factor rather than multiplying so it looks
  like we should be passing the virtual texture size here.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit c9773566b0ec0a17b34c440090529de8cff9609e)
2013-01-22 17:48:18 +00:00
Robert Bragg
2c0d48324f texture: Adds cogl_texture_set_data convenience api
This adds a cogl_texture_set_data function that is basically just a
convenience wrapper around cogl_texture_set_region. In the common case
where you want to upload the full contents of a mipmap level though this
api takes 4 less arguments (6 in total) so it's a bit simpler.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit e651dbdc4e4f03016a3dee513e3680270a4a9142)
2013-01-22 17:48:17 +00:00
Robert Bragg
73e8a6d7ce Allow lazy texture storage allocation
Consistent with how we lazily allocate framebuffers this patch allows us
to instantiate textures but still specify constraints and requirements
before allocating storage so that we can be sure to allocate the most
appropriate/efficient storage.

This adds a cogl_texture_allocate() function that is analogous to
cogl_framebuffer_allocate() which can optionally be called to explicitly
allocate storage and catch any errors. If this function isn't used
explicitly then Cogl will implicitly ensure textures are allocated
before the storage is needed.

It is generally recommended to rely on lazy storage allocation or at
least perform explicit allocation as late as possible so Cogl can be
fully informed about the best way to allocate storage.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 1fa7c0f10a8a03043e3c75cb079a49625df098b7)

Note: This reverts the cogl_texture_rectangle_new_with_size API change
that dropped the CoglError argument and keeps the semantics of
allocating the texture immediately. This is because Mutter currently
uses this API so we will probably look at updating this later once
we have a corresponding Mutter patch prepared. The other API changes
were kept since they only affected experimental api.
2013-01-22 17:48:17 +00:00
Robert Bragg
5a814e386a texture: add width/height members to base CoglTexture
There was a lot of redundancy in how we tracked the width and height of
different texture types which is greatly simplified by adding width and
height members to CoglTexture directly and removing the get_width and
get_height vfuncs from CoglTextureVtable

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 3236e47723e4287d5e0023f29083521aeffc75dd)
2013-01-22 17:48:17 +00:00
Robert Bragg
0850eea162 Move _cogl_texture_get_gl_format to -texture-gl.c
This moves the _cogl_texture_get_gl_format function from cogl-texture.c
to cogl-texture-gl.c and renames it _cogl_texture_gl_get_format.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit f8deec01eff7d8d9900b509048cf1ff1c86ca879)
2013-01-22 17:48:17 +00:00
Robert Bragg
a57195d16d framebuffer: split out GL read_pixels code
This moves the direct use of GL in cogl-framebuffer.c for handling
cogl_framebuffer_read_pixels_into_bitmap() into
driver/gl/cogl-framebuffer-gl.c and adds a
->framebuffer_read_pixels_into_bitmap vfunc to CoglDriverVtable.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 2f893054d6754e6bc7983f061b27c7858f1a593c)
2013-01-22 17:48:17 +00:00
Robert Bragg
36c85da3b8 Remove cogl-internal.h
This remove cogl-internal.h in favour of using cogl-private.h. Some
things in cogl-internal.h were moved to driver/gl/cogl-util-gl-private.h
and the _cogl_gl_error_to_string function whose prototype was moved from
cogl-internal.h to cogl-util-gl-private.h has had its implementation
moved from cogl.c to cogl-util-gl.c

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 01cc82ece091aa3bec4c07fdd6bc9e5135fca573)
2013-01-22 17:48:17 +00:00
Damien Lespiau
a0d47d5660 build: Hide cogl_pipeline_cache_{new,free}()
Those symbols should not be public and were exported as they started
with cogl_.

(cherry picked from commit 68a55f1dc70ea60fcccbe226029e585886feddc2)
2013-01-22 17:48:16 +00:00
Damien Lespiau
1f78b4044a enum-types: Fix the header guard #endif comment
Something left from the Clutter split.

(cherry picked from commit f148b7e2ff1fb86cab7f4b7be869bfdba4f91100)
2013-01-22 17:48:16 +00:00
Damien Lespiau
5912ee9997 doc: Fix the remaining broken internal cross-references
Symbols changed names, %1 makes gtk-doc sad and some referenced symbols
were missing in the -sections.txt file.

(cherry picked from commit c12919c321186ac7b223bc4f82c588ca2f199d67)
2013-01-22 17:48:16 +00:00
Damien Lespiau
4316c3c9e1 doc: Use Docbook's <constant> for external constants
For external (non gtk-doc even) constants, we can use <constant> to
correctly tag those without gtk-doc trying to cross-reference them.

(cherry picked from commit 78d22c6cd44a2279adcd2b94c3317292af861c70)
2013-01-22 17:48:16 +00:00
Damien Lespiau
ec6a713fcc doc: Add a missing '*' to the documentation of CoglFilterReturn
(cherry picked from commit 0b9bdd5aaf2616993c4c20c7d7317daf178b19fd)
2013-01-22 17:48:16 +00:00
Damien Lespiau
c0a024f81d doc: Put the opening '{' at the end of combined typedefs
gtk-doc is not smart enough to parse things like:

  typedef struct
  {
    ...
  } CoglFoo;

but needs the '{' at the end of the first line.

(cherry picked from commit d1187550ef547305fdeb8a22a7e39a95611a0e1d)
2013-01-22 17:48:15 +00:00
Damien Lespiau
bde1d2e661 doc: Fix FALSE documentation
Typo with the copy & paste from TRUE.

(cherry picked from commit c7d4a13889ee5681a237a0d2a0fbbdca79120f17)
2013-01-22 17:48:15 +00:00
Damien Lespiau
9401cb044e doc: Fixup type references
gtk-doc needs the types in -sections.txt to be able to do
cross-references. Add all those currently generating warnings.

(cherry picked from commit e57a21d2608f0885e6f2eb3a017feb7dffb7a63c)
2013-01-22 17:48:15 +00:00
Damien Lespiau
55d2a039c6 doc: Don't use '::' to denote an object property
That's actually for signals in gtk-doc and we're not dealing with
GObjects so it's not really appropriate. Used <structfield> as it's the
closest tag I could find to describe a 'property' of a CoglObject and
gives a generic style in the produced HTML.

(cherry picked from commit 8b485d57577cff227a0c7a2e6c06d8d277821374)
2013-01-22 17:48:15 +00:00
Damien Lespiau
780b01f1c8 doc: Populate cogl-types a bit more and move it to the general section
I just added the general types creating warnings in the current state of the
documentation (ie the ones references by already documented functions)
and moved the section from the 'Utility' section to the 'General'
section which I believe is a better fit as they are used by more than
one type and not really utilities.

(cherry picked from commit c51b147789763863ef32482d7ffa936160ed7c93)
2013-01-22 17:48:15 +00:00
Damien Lespiau
5c12c36c58 doc: Don't use the HTML <ul> but the DocBook equivalent
Of course, this confused gtk-doc.

(cherry picked from commit be512104784a9200a2e98a75d16a56e3897a8845)
2013-01-22 17:48:15 +00:00
Damien Lespiau
f1f1e876f1 doc: Fix the remaining warning around the depth state
Various changes have led to the current, separate from the pipeline,
depth state, this commit fixes the remaining waring around that.

(cherry picked from commit 111e687e722ad67a0e1c09f881c6282ccb06410b)
2013-01-22 17:48:15 +00:00
Damien Lespiau
9ae9602047 doc: Expose CoglDepthState
It wasn't included to the documention up to now.

(cherry picked from commit 826c0d5c8333ad31595d690d7c8753f84d12b2ad)
2013-01-22 17:48:14 +00:00
Damien Lespiau
17333d3f10 doc: Use <ulink> to make Gimbal Lock reactive
Instead of just having the reference at the end of the paragraph.
Usually seen as more usable.

(cherry picked from commit 6988d3ae61ab16fb298b34d2bd31860833f04186)
2013-01-22 17:48:14 +00:00
Damien Lespiau
61e1206d33 doc: Unhide cogl-matrix-stack.h
The documentation welcomes a new 2.0 API.

(cherry picked from commit 8d78957c8d29b89c7bf352131d84c9755083eed9)
2013-01-22 17:48:14 +00:00
Damien Lespiau
f2b0dac871 doc: Document CoglColor
(cherry picked from commit a0dfba1eb1c541490611a021799e656bf43a04fe)
2013-01-22 17:48:14 +00:00
Damien Lespiau
cfcb440d70 doc: Document the members of CoglPollFDEvent
(cherry picked from commit 7cc94c2a994a774f0d8db172c9e0bec506bd2287)
2013-01-22 17:48:14 +00:00
Damien Lespiau
864e5562df doc: Fix various mismatches between arguments and their documentation
Argument names and @$arg suffered from various little mismatches, fix
them in a batch commit.

(cherry picked from commit d2ac3c5a88d980e7519c98bd261111b93cf73a6e)
2013-01-22 17:48:13 +00:00
Damien Lespiau
6aadb4a0db doc: Make a pass on CoglRenderer argument documentation
Various arguments where missing, added them.

(cherry picked from commit 6e6ee4acb5524ced2f82d42d9c6a706f84f8184c)
2013-01-22 17:48:13 +00:00
Damien Lespiau
f63b4597f7 doc: Finish describing the arguments of cogl_error_matches()
(cherry picked from commit 8f429d9ce45e3df204db0bdc0d988fd07f103282)
2013-01-22 17:48:13 +00:00
Damien Lespiau
532cd9bf9f doc: Fix small typo of sequence
(cherry picked from commit 09706dc78178d022b4313572600a245112d23fd9)
2013-01-22 17:48:13 +00:00
Damien Lespiau
0142d027d7 doc: Update the section name and description of CoglIndices
cogl-index-range was the old API, update the section name to match what
is declared in the documentation. Also update the short description to
better match the new API.

(cherry picked from commit d73df38ff2a8ebe477e139e5ac20838c8f4364bb)
2013-01-22 17:48:13 +00:00
Damien Lespiau
e4ca3cb039 doc: s/Fuction/Function/
(cherry picked from commit 8e62a12cff9ba0a267d199c359fdc8e591f65264)
2013-01-22 17:48:12 +00:00
Damien Lespiau
8c1708ec93 doc: Fix argument syntax of existing commment blocks
Fixes:
  Parsing comment block file : parameter expecter

by correctly declaring parameters.

(cherry picked from commit 2fe9bc2017fa966ab445674a530aac0c17204040)
2013-01-22 17:48:12 +00:00
Damien Lespiau
388e589ac4 doc: Fix a typo in the description of cogl-bitmap
(cherry picked from commit 423b8f8c62b1f73d6b0e24a5689428821e154703)
2013-01-22 17:48:12 +00:00
Damien Lespiau
81a94a7849 doc: Expose the Cogl GLES 2.0 facilities in the documentation
(cherry picked from commit 0c2344b9aafe4afdf7782fd9badc451de79b7a63)
2013-01-22 17:48:12 +00:00
Damien Lespiau
37cc715269 doc: Add missing symbol in cogl_framebuffer_get_context() documentation
(cherry picked from commit 146a1bfc2655c7e7ed0a5a4fd64b490385159f49)
2013-01-22 17:48:12 +00:00
Damien Lespiau
7b43289ec9 doc: Use Returns: to annotate return values
gtk-doc complains that having a sentence starting by Return is a bit
ambiguous and it'd rather see 'Returns:' spelled out.

Fixes 2 warnings:

 warning: Free-form return value description in $symbol. Use `Returns:'
 to avoid ambiguities

(cherry picked from commit 9718f31717b3a0e01b7c4c69cea138f39d23c0e0)
2013-01-22 17:48:11 +00:00
Damien Lespiau
b8d9bbed1a Don't use #if with defines that are either defined or not
COGL_HAS_* and COGL_ENABLE_DEBUG are either defined in config.h or not.

So let's test against this, not against their truth value, this allow us
to use -Wundef to catch undefined macros in preprocessor directives.

(cherry picked from commit 73b62832f24711073b0876a6c0f5c61727842c1c)
2013-01-22 17:48:11 +00:00
Neil Roberts
1f0b432a25 sdl: Bind the default window when currently bound window is destroyed
Cogl always needs to have the context bound to something so that it
can freely create resources such as textures even if there is no
current window. When the currently bound SDLWindow is destroyed, SDL
apparently explicitly unbinds the GL context. If something then later
for example tries to create a texture Cogl would start getting GL
errors and fail. To fix this the SDL winsys now just binds the dummy
window before deiniting the currently bound onscreen.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 2c0cfdefbb9d1ac5097d98887d3581b67a324fae)
2013-01-22 17:48:11 +00:00
Robert Bragg
cab4622eb3 matrix-stack: make CoglMatrixStack public
We have found several times now when writing code using Cogl that it
would really help if Cogl's matrix stack api was public as a utility
api. In Rig for example we want to avoid redundant arithmetic when
deriving the matrices of entities used to render and we aren't able
to simply use the framebuffer's matrix stack to achieve this. Also when
implementing cairo-cogl we found that it would be really useful if we
could have a matrix stack utility api.

(cherry picked from commit d17a01fd935d88fab96fe6cc0b906c84026c0067)
2013-01-22 17:48:11 +00:00
Robert Bragg
3e33c00c84 matrix-stack: only maintain composite_gets in debug builds
At times there can be huge numbers of CoglMatrixEntry structures
allocated if they are being used to track the transform of many drawing
commands or objects in a scenegraph. Therefore the size of a
CoglMatrixEntry should be kept as small as possible both to help reduce
the memory usage of applications but also to improve cache usage since
matrix stack manipulations are performance critical at times.

This reduces the size of CoglMatrixEntry structures for non-debug builds
by removing the composite_gets counter used to sanity check how often
the transform for an entry is resolved.

(cherry picked from commit c400b86681a328b1e12b7e120e9c3f4f12c356e0)
2013-01-22 17:48:10 +00:00
Robert Bragg
f5b95e8087 matrix-stack: move pointer to top of CoglMatrixEntry
This moves the parent pointer member to the top of the CoglMatrixEntry
structure since it will lead to wasted padding when we build for 64bit
cpus.

(cherry picked from commit 42b4750070286a6404b103d8a827a46efb6b344c)
2013-01-22 17:48:10 +00:00
Robert Bragg
9eb816bc7e matrix-stack: getting parent ptr before freeing
When unrefing a CoglMatrixEntry we walk up the ancestry unrefing and
freeing entries until we find an entry that doesn't need to be freed.
The problem fixed by this patch was that we didn't dereference the
parent member of each entry until after the entry was freed and so there
was the potential for reading a junk parent pointer back.

(cherry picked from commit e5d836b84acb35a009854a0cc0892320023789d1)
2013-01-22 17:48:10 +00:00
Robert Bragg
5bc6121cbf journal: don't call cogl_attribute_buffer_new with NULL
It is considered an error to pass a NULL data pointer to
cogl_attribute_buffer_new so we now call
cogl_attribute_buffer_new_with_size instead.

(cherry picked from commit 8e201574b9c35847aa4e999a391741538a0b356b)
2013-01-22 17:48:10 +00:00
Damien Lespiau
5d796f0a4c x11: Replace all internal usage of cogl_xlib_get_display()
And use the renderer replacement, cogl_xlib_renderer_get_display()

(cherry picked from commit ea355792e88b09b0b0afa6fb5c5acc311d41688e)
2013-01-22 17:48:09 +00:00
Neil Roberts
6bcfc8342a Fix handling of binding errors when uploading a full texture
Both the texture drivers weren't handling errors correctly when a
CoglPixelBuffer was used to set the contents of an entire texture.
This was causing it to hit an assertion failure in the pixel buffer
tests.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 888733d3c3b24080d2f136cedb3876a41312e4cf)
2013-01-22 17:48:09 +00:00
Robert Bragg
7011eb5db4 texture: expose mipmap level in set region apis
cogl_texture_set_region() and cogl_texture_set_region_from_bitmap() now
have a level argument so image data can be uploaded to a specific mipmap
level.

The prototype for cogl_texture_set_region was also updated to simplify
the arguments.

The arguments for cogl_texture_set_region_from_bitmap were reordered to
be consistent with cogl_texture_set_region with the source related
arguments listed first followed by the destination arguments.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 3a336a8adcd406b53731a6de0e7d97ba7932c1a8)

Note: Public API changes were reverted in cherry-picking this patch
2013-01-22 17:48:09 +00:00
Robert Bragg
fa5a9c88fe atlas-texture: remove some use of _COGL_GET_CONTEXT
This removes several uses of _COGL_GET_CONTEXT in cogl-atlas-texture.c.
Notably this involved making CoglPangoGlyphCache track an associated
CoglContext pointer which cogl-pango can pass to
_cogl_atlas_texture_new_with_size().

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit d66afbd0758539330490945c699a05c0749c76aa)
2013-01-22 17:48:09 +00:00
Robert Bragg
cd7b15b7df glx: avoid use of _COGL_GET_CONTEXT()
Removes some (not all) use of _COGL_GET_CONTEXT() from cogl-winsys-glx.c

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 698a131c4991e4393ce966b968637fba194f252c)
2013-01-22 17:48:09 +00:00
Robert Bragg
110a7d0ed7 framebuffer: remove use of _COGL_GET_CONTEXT
Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit b8755a98e4139b6a077ff329b9c5900292d3a1d3)
2013-01-22 17:48:08 +00:00
Robert Bragg
7941357e73 journal: don't reference global context
This removes all use of _COGL_GET_CONTEXT from cogl-journal.c

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit b5c8ec5db52a6cb71f29b338a59fb3772506fef7)
2013-01-22 17:48:08 +00:00
Neil Roberts
ca5197a70c error: Don't allocate a new CoglError when propagating
The _cogl_propagate_error() function takes ownership of the incoming
error pointer so there's no need to allocate a new error when passing
it on. The errors can potentially be passed up from a number of layers
so it seems worthwhile to avoid the allocation.

The _cogl_propagate_gerror() function was previously using
_cogl_propagate_error(). Presumably this would not have worked because
that function would try to free the error from glib using
cogl_error_free but that would use the wrong free function and thus
the wrong slice allocator. The GError propagating function is only
used when gdk-pixbuf is enabled which now requires glib support anyway
so we can just avoid defining the function when compiling without
glib.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 91266162bef9f89fb42c01be0f929d5079758096)
2013-01-22 17:48:08 +00:00
Neil Roberts
af0dc3431d Fix spelling of _cogl_propagate_error
‘Propagate’ was misspelled as ‘propogate’.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 5fb4a6178c3e64371c01510690d9de1e8a740bde)
2013-01-22 17:48:08 +00:00
Robert Bragg
38921701e5 blit: avoid referring to framebuffer stack
This make _cogl_framebuffer_blit take explicit src and dest framebuffer
pointers and updates all the texture blitting strategies in cogl-blit.c
to avoid pushing/popping to/from the the framebuffer stack.

The removes the last user of the framebuffer stack which we've been
aiming to remove before Cogl 2.0

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 598ca33950a93dd7a201045c4abccda2a855e936)
2013-01-22 17:48:08 +00:00
Robert Bragg
e8eb9793e6 moves some gl texture code too cogl-texture-gl.c
This adds a driver/gl/cogl-texture-gl.c file and moves some gl specific
bits from cogl-texture.c into it. The moved symbols were also given a
_gl_ infix and the calling code was updated accordingly.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 2c9e81de70cc02d72b1ce9013c49e39300a05b6a)
2013-01-22 17:48:08 +00:00
Robert Bragg
6941ff2c71 matrix-stack: init cache->flipped
This ensures we initialize the value of cache->flipped in
_cogl_matrix_entry_cache_init()

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 507814d27298231c9ae50d74b386fb00f0909922)
2013-01-22 17:48:08 +00:00
Robert Bragg
da9f5e6179 bitmap: ret CoglError from _new_with_malloc_buffer
_cogl_bitmap_new_with_malloc_buffer() now takes a CoglError for throwing
exceptional errors and all callers have been updated to pass through
any application error pointer as appropriate.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 67cad9c0eb5e2650b75aff16abde49f23aabd0cc)
2013-01-22 17:48:08 +00:00
Robert Bragg
07d47eadd3 texture: split out high-level texture constructors
This splits out the very high level texture constructors that may
internally construct one of several types of lower level texture due to
various constraints.

This also updates the prototypes for these constructors to take an
explicit context pointer and return a CoglError consistent with other
texture constructors.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit a1cabfae6ad50c51006c608cdde7d631b7832e71)
2013-01-22 17:48:07 +00:00
Robert Bragg
e439bdd12f atlas: catch _create_texture errors
Previously we were passing NULL to
cogl_texture_2d_new_{from_bitmap,with_size} so if there was an error the
application would be aborted. This ensures we pass an internal CoglError
so errors can be caught and suppressed instead.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit b8d1a1db482e1417979df9f88f92da47aa954bd0)
2013-01-22 17:48:07 +00:00
Robert Bragg
f53fb5e2e0 Allow propogation of OOM errors to apps
This allows apps to catch out-of-memory errors when allocating textures.

Textures can be pretty huge at times and so it's quite possible for an
application to try and allocate more memory than is available. It's also
very possible that the application can take some action in response to
reduce memory pressure (such as freeing up texture caches perhaps) so
we shouldn't just automatically abort like we do for trivial heap
allocations.

These public functions now take a CoglError argument so applications can
catch out of memory errors:

cogl_buffer_map
cogl_buffer_map_range
cogl_buffer_set_data
cogl_framebuffer_read_pixels_into_bitmap
cogl_pixel_buffer_new
cogl_texture_new_from_data
cogl_texture_new_from_bitmap

Note: we've been quite conservative with how many apis we let throw OOM
CoglErrors since we don't really want to put a burdon on developers to
be checking for errors with every cogl api call. So long as there is
some lower level api for apps to use that let them catch OOM errors
for everything necessary that's enough and we don't have to make more
convenient apis more awkward to use.

The main focus is on bitmaps and texture allocations since they
can be particularly large and prone to failing.

A new cogl_attribute_buffer_new_with_size() function has been added in
case developers need to catch OOM errors when allocating attribute buffers
whereby they can first use _buffer_new_with_size() (which doesn't take a
CoglError) followed by cogl_buffer_set_data() which will lazily allocate
the buffer storage and report OOM errors.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit f7735e141ad537a253b02afa2a8238f96340b978)

Note: since we can't break the API for Cogl 1.x then actually the main
purpose of cherry picking this patch is to keep in-line with changes
on the master branch so that we can easily cherry-pick patches.

All the api changes relating stable apis released on the 1.12 branch
have been reverted as part of cherry-picking this patch so this most
just applies all the internal plumbing changes that enable us to
correctly propagate OOM errors.
2013-01-22 17:48:07 +00:00
Robert Bragg
63db64f426 attribute: Only unref buffer for buffered attributes
constant attributes don't have a corresponding buffer so
_cogl_attribute_free shouldn't try to unref it. Also, for good measure,
in the case of constant attributes we should call
_cogl_boxed_value_destroy() (although currently we know there is no
dynamic data associated with the boxed values).

(cherry picked from commit 89d6dc90d10c59676e0deed87c2c15a0c9712737)
2013-01-22 17:48:07 +00:00
Robert Bragg
6e379fb54e attribute: Adds support for constant CoglAttributes
This makes it possible to create vertex attributes that efficiently
represent constant values without duplicating the constant for every
vertex. This adds the following new constructors for constant
attributes:

  cogl_attribute_new_const_1f
  cogl_attribute_new_const_2fv
  cogl_attribute_new_const_3fv
  cogl_attribute_new_const_4fv
  cogl_attribute_new_const_2f
  cogl_attribute_new_const_3f
  cogl_attribute_new_const_4f
  cogl_attribute_new_const_2x2fv
  cogl_attribute_new_const_3x3fv
  cogl_attribute_new_const_4x4fv

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 6507216f8030e84dcf2e63b8ecfe906ac47f2ca7)
2013-01-22 17:48:07 +00:00
Robert Bragg
56ae6f9afa progend-glsl: dirty prog for vertex state changes
_cogl_pipeline_progend_glsl_pre_change_notify and
_cogl_pipeline_progend_glsl_layer_pre_change_notify were only dirtying
the current program state for changes related to fragment processing.

This make both functions also check for changes that affect vertex
shader codegen.

This also fixes a mistake where
_cogl_pipeline_progend_glsl_layer_pre_change_notify was checking for
non-layer related changes which would never be seen, and instead it
should be checking for layer based changes only.
2013-01-22 17:48:07 +00:00
Robert Bragg
7fa04bb1a6 Adds back tex_coord array for CoglShader compatibility
This adds back compatibility for CoglShaders that reference the
cogl_tex_coord_in[] or cogl_tex_coord_out[] varyings. Unlike the
previous way this was done this patch maintains the use of layer numbers
for attributes and maintains forwards compatibility by letting shaders
alternatively access the per-layer tex_coord varyings via
cogl_tex_coord%i_in/out defines that index into the array.
2013-01-22 17:48:07 +00:00
Robert Bragg
1c449c67f6 Remove the varying array for tex_coords
This removes the need to maintain an array of tex_coord varyings and
instead we now just emit a varying per-layer uniquely named using a
layer_number infix like cogl_tex_coord0_out and cogl_tex_coord0_in.

Notable this patch also had to change the journal flushing code to use
pipeline layer numbers to determine the name of texture coordinate
attributes.

We now also break batches by using a deeper comparison of layers so
such that two pipelines with the same number of layers can now cause a
batch break if they use different layer numbers.

This adds an internal _cogl_pipeline_layer_numbers_equal() function that
takes two pipelines and returns TRUE if they have the same number of
layers and all the layer numbers are the same too, otherwise it returns
FALSE.

Where we used to break batches based on changes to the number of layers
we now break according to the status of
_cogl_pipeline_layer_numbers_equal

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit e55b64a9cdc93285049d9b969bef67484c2d9fb3)

Note: this will cause a temporary regression for the Cogl 1.x CoglShader
api since it will break compatibility with existing shaders that
reference the texture varyings from the fragment shader.

The intention is to follow up with another patch to add back
CoglShader compatibility.
2013-01-22 17:48:06 +00:00
Robert Bragg
14d8ec7cca sync cogl-blit and cogl-texture with master
This synchronizes parts of cogl-blit.c and cogl-texture.c with the
master branch to help with cherry picking patches.
2013-01-22 17:48:06 +00:00
Robert Bragg
272431e102 Check for out-of-memory when allocating 3d textures
This makes Cogl explicitly check for out-of-memory errors reported by
the opengl driver in cogl_texture_3d_new_with_size() calls. This allows
us to throw a COGL_SYSTEM_ERROR_NO_MEMORY error and return NULL so
applications may gracefully handle this condition.

This patch only affects the cogl_texture_3d_new_with_size() api not
_new_from_data() or _new_from_bitmap().

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit a602cae233b16d2ec9ad6fd238b169720467cf75)
2013-01-22 17:48:06 +00:00
Robert Bragg
31d105abd8 Check for out-of-memory when allocating 2d textures
This makes Cogl explicitly check for out-of-memory errors reported by
the opengl driver in cogl_texture_2d_new_with_size() calls. This allows
us to throw a COGL_SYSTEM_ERROR_NO_MEMORY error and return NULL so
applications may gracefully handle this condition.

This patch only affects the cogl_texture_2d_new_with_size() api not
_new_from_data() or _new_from_bitmap().

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 0283423dad59ba3d3e4cde400c29ac8e7803f888)
2013-01-22 17:48:06 +00:00
Neil Roberts
4f6fe6f0e2 Fixes for --disable-glib
This fixes some problems which were stopping --disable-glib from
working properly:

• A lot of the public headers were including glib.h. This shouldn't be
  necessary because the API doesn't expose any glib types. Otherwise
  any apps would require glib in order to get the header.

• The public headers were using G_BEGIN_DECLS. There is now a
  replacement macro called COGL_BEGIN_DECLS which is defined in
  cogl-types.h.

• A similar fix has been done for G_GNUC_NULL_TERMINATED and
  G_GNUC_DEPRECATED.

• The CFLAGS were not including $(builddir)/deps/glib which was
  preventing it finding the generated glibconfig.h when building out
  of tree.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 4138b3141c2f39cddaea3d72bfc04342ed5092d0)
2013-01-22 17:48:05 +00:00
Neil Roberts
eec0f1cd65 Add cogl_sdl_onscreen_get_window()
This adds a function to get a pointer to the SDL_Window associated
with a CoglOnscreen when using the SDL2 winsys.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 071f4b80daa8a2f967746a30b3acf014d74f781a)
2013-01-22 17:48:05 +00:00
Neil Roberts
ff11a2b207 Use GL_ARB_texture_swizzle to emulate GL_ALPHA textures
The core profile of GL3 has removed support for component-alpha
textures. Previously the GL3 driver would just ignore this and try to
create them anyway. This would generate a GL error on Mesa.

To fix this the GL texture driver will now create a GL_RED texture
when GL_ALPHA textures are not supported natively. It will then set a
texture swizzle using the GL_ARB_texture_swizzle extension so that the
alpha component will be taken from the red component of the texture.
The swizzle is part of the texture object state so it only needs to be
set once when the texture is created.

The ‘gen’ virtual function of the texture driver has been changed to
also take the internal format as a parameter. The GL driver will now
set the swizzle as appropriate here.

The GL3 driver now reports an error if the texture swizzle extension
is not available because Cogl can't really work properly without out
it. The extension is part of GL 3.3 so it is quite likely that it has
wide support from drivers. Eventually we could get rid of this
requirement if we have our own GLSL front-end and we could generate
the swizzle ourselves.

When uploading or downloading texture data to or from a
component-alpha texture, we can no longer rely on GL to do the
conversion. The swizzle doesn't have any effect on the texture data
functions. In these cases Cogl will now force an intermediate buffer
to be used and it will manually do the conversion as it does for the
GLES drivers.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 32bacf81ebaa3be21a8f26af07d8f6eed6607652)
2013-01-22 17:48:04 +00:00
Neil Roberts
05ebbfdae7 sdl: Support setting resizable before allocate in SDL 1
The SDL 1 winsys now checks for the initial resizable state of the
onscreen framebuffer when it is allocated and updates the video flags
accordingly.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit f5fb9be70a92f751886a94da0b34e14252ed197e)
2013-01-22 17:48:04 +00:00
Neil Roberts
982ee75319 Fix flushing the stencil viewport clipping workaround
There were two problems with the stencil viewport clip workaround
introduced in afc5daab8:

• When the viewport is changed the current clip state is not marked as
  dirty. That means that when the framebuffer state is next flushed it
  would continue to use the stencil from the previous viewport.

• When the viewport is automatically updated due to the window being
  resized the viewport age was not incremented so the clip state
  wouldn't be flushed.

I noticed the bugs by running cogl-sdl2-hello.

This patch makes it so that the clip state is dirtied in
cogl_framebuffer_set_viewport if the workaround is enabled.

The automatic viewport changing code now just calls
cogl_framebuffer_set_viewport instead of directly prodding the
viewport values. This has the side-effect that it will also cause the
journal to be flushed. This seems like the right thing to do anyway
and presumably there would have been a bug before where it wouldn't
have flushed the journal, although presumably this is extremely
unlikely because it would have to have done a resize in the middle of
painting the scene.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 0dca99ddf728c8d4e3003861a03e8a2beccf282d)
2013-01-22 17:48:04 +00:00
Neil Roberts
9f107ab3fb Support window resizing in the SDL 2 winsys
The SDL2 winsys will now set the SDL_WINDOW_RESIZABLE flag on the
window before creating it if the resizable property is set on the
onscreen. Note that there doesn't appear to be a way in SDL to change
the flag later so unlike the other winsyses it will only take affect
if it is set before allocating the framebuffer.

The winsys now registers a callback for SDL events so that it can
report window size changes back to the application.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 0dea9aeb897faf029828379b120970477df3c7d5)
2013-01-22 17:48:04 +00:00
Adel Gadllah
41d59c0af7 cogl: Enable PBO path for all mesa versions when using intel
There seem to be other cases where the slow path is hit even with mesa 9.0.

https://bugzilla.gnome.org/show_bug.cgi?id=685915

(cherry picked from commit 6b14fa222bafb7e67c4845b26439322b34ac26a2)
2013-01-22 17:48:04 +00:00
Robert Bragg
6cfc93f26f clip-stack: workaround intel gen6 viewport clip bug
The Intel Mesa gen6 driver doesn't currently handle scissoring offset
viewports correctly, so this implements a workaround to intersect the
current viewport bounds with the scissor rectangle.

(cherry picked from commit afc5daab85e5faca99d6d6866658cb82c3954830)
2013-01-22 17:48:04 +00:00
Neil Roberts
362db1c445 Don't add the ARB suffix for the GL_ARB_map_buffer_range extension
The functions defined in the GL_ARB_map_buffer_range extension have no
suffix.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit f355d0a01af9015ffdcd574477090cdc69025280)
2013-01-22 17:48:04 +00:00
Neil Roberts
7654c7cffc Make cogl_color_init_from_4fv take a const array
The passed in array isn't written to so it's more convenient to use if
it is const.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 87c02670107f00008611cbb0a8cfc97c8b6ea956)
2013-01-22 17:48:03 +00:00
Neil Roberts
6db9427e8a Use cogl_buffer_map_range from the journal
The journal maintains a cache of attribute buffers to upload the
vertices for the rectangles. The buffers are mapped to fill in the
data. However, if the previous journal was larger than the one being
flushed now then the buffers may be larger than is actually needed. In
that case we might as well only map the range that is actually used so
that the driver can potentially avoid having to set up a mapping for
the entire buffer. The COGL_BUFFER_MAP_HINT_DISCARD flag is still set
so that the driver is free to discard the entire buffer, not just the
subrange.

The _cogl_buffer_map_for_fill_or_fallback has been replaced with
_cogl_buffer_map_range_for_fill_or_fallback so that the range
parameters can be passed. The original function is now just a wrapper
around the latter.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 27769e54806dcfc1a12fdc4b07b054b8f2f4215b)
2013-01-22 17:48:03 +00:00
Neil Roberts
ec03357e88 Add cogl_buffer_map_range()
This adds a buffer method to map a subregion of the buffer. This works
using the GL_ARB_map_buffer_range extension. If the extension is not
available then it will fallback to using glMapBuffer to map the entire
buffer and then just add the offset to the returned pointer.

cogl_buffer_map() is now just a wrapper which maps the entire range of
the buffer. The driver backend functions have been renamed to
map_range and they now all take the offset and size arguments.

When the COGL_BUFFER_MAP_HINT_DISCARD hint is used and the map range
extension is available instead of using glBufferData to invalidate the
buffer it will instead pass the new GL_MAP_HINT_INVALIDATE_BUFFER
flag. There is now additionally a COGL_BUFFER_MAP_HINT_DISCARD_REGION
hint which can be used if the application only wants to discard the
small region that is mapped. glMapBufferRange is always used if it is
available even if the entire buffer is being mapped because it seems
more robust to pass those flags then to call glBufferData.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 55ca02b5ca9cafc750251ec974e0d6a536cb80b8)
2013-01-22 17:48:03 +00:00
Damien Lespiau
8a3fb7a10d context: Re-add /<* private *>/ for _COGL_N_FEATURE_IDS
Turns out gtk-doc really needs 'private' and glib-mkenums needs 'skip'.
So let's have both.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit e51206b2a9c9a582ac83fb71290524c99a8dbbb6)
2013-01-22 17:48:03 +00:00
Damien Lespiau
979a3d5517 error: Fix 'burden' typo
Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 9af7dda5d7de69522b152d853ed8921c00c15f4e)
2013-01-22 17:48:03 +00:00
Damien Lespiau
08205a40e1 context: glib-mkenums chokes on /*< private >*/ but supports /*< skip >*/
The private option is really part of gtk-doc, glib-mkenums does not
support it. Use skip instead.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 015c36af27a8ce68d60f8aab6a10acdc48c5f38c)
2013-01-22 17:48:03 +00:00
Rico Tzschichholz
87e15d6693 build: fix make dist
(cherry picked from commit 6a78a8c6b6d368f2816f50e10cb9602f5c47de71)
2013-01-22 17:48:03 +00:00
Neil Roberts
76843fc529 sdl2: Fix GL3 context creation
The check to verify whether we've got the right GL context was
checking that the GL version was less than 3 whenever the non-GL3
driver is used. However it looks like the driver is free to return a
GL3 context that is compatible with GL2 if GL2 is requested so this
was breaking the GL2 driver.

This also adds the necessary SDL attributes to request a forward
compatible core context like the GLX and EGL winsys's do. I haven't
actually tested this because it looks like SDL will only create a GL
context with GLX and I haven't got a recent enough X server to handle
the glXCreateContextAttribs request.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit d46acafa3ea7ba2e6c4ac7a45f00a132df1b2872)
2013-01-22 17:48:02 +00:00
Neil Roberts
8039c2c779 Fix a warning when building the SDL2 winsys
The SDL2 winsys was using _cogl_set_error without including its header
so it was giving an annoying warning. This patch also fixes some
indentation issues.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 9c8433087b7573f7606dfae2bae3045803ead115)
2013-01-22 17:48:02 +00:00
Damien Lespiau
2582fa1519 display: Fix 'arguments' typo
Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 1f30d200be65cd44dbd6f224532b9c4030d6c39c)
2013-01-22 17:48:02 +00:00
Damien Lespiau
f9c7e9d270 framebuffer: Annotate the output parameter of get_viewport4fv()
Annotate that the float* is an out parameter that points to a caller
allocated array of 4 floats.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit f40b0d03d796c16c62f4937e99e16de084fc6b9a)
2013-01-22 17:48:02 +00:00
Damien Lespiau
0866b90069 object: Move cogl_object_{ref,unref}() to cogl-object.h
Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit d2f07344a361c43ccdb85a0587812ca3a103078b)
2013-01-22 17:48:02 +00:00
Neil Roberts
2e77c039c9 Fix a warning when building without GLES2 support
Since commit 2701b93f cogl-pipeline-opengl.c always has code which
calls _cogl_pipeline_progend_glsl_get_attrib_location but the header
declaring this function was only included if GLES2 support was
enabled. This was making it give an annoying warning so let's just
unconditionally include it.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 34143bc6f1239c9cb22ba613521ba9ee7ec7059a)
2013-01-22 17:48:02 +00:00
Neil Roberts
bf8a1b1eda progend-glsl: Fix handling of the builtin uniforms on non-GLES2
The ‘builtin uniforms’ are added to the GLSL code generated for the
GLES2 driver to implement missing fixed functionality such as the
builtin point sprite size and the alpha test reference. Previously the
code that accessed these was #ifdef'd to be compiled only when GLES2
was enabled. However since 2701b93f part of this code is now always
used even for non-GLES2 drivers. The code that accessed the builtin
uniforms array was however no longer #ifdef'd which meant that it
wouldn't compile any more if GLES2 was not enabled. This was further
broken becase the GL3 driver actually should be using the alpha test
uniform because that also does not provide any fixed functionality for
alpha testing.

To fix this the builtin uniform array is now always compiled in and
the code to access it is always used. A new member has been added to
the array to mark which private feature the uniform is used to
replace. That is checked before updating the uniform so that under
GLES2 it will update both uniforms but under GL3 it will only update
the alpha test reference.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 5469a25413883080df75a80153accf5d9124f716)
2013-01-22 17:48:02 +00:00
Neil Roberts
2616ae0fa9 Add a GL 3 driver
This adds a new CoglDriver for GL 3 called COGL_DRIVER_GL3. When
requested, the GLX, EGL and SDL2 winsyss will set the necessary
attributes to request a forward-compatible core profile 3.1 context.
That means it will have no deprecated features.

To simplify the explosion of checks for specific combinations of
context->driver, many of these conditionals have now been replaced
with private feature flags that are checked instead. The GL and GLES
drivers now initialise these private feature flags depending on which
driver is used.

The fixed function backends now explicitly check whether the fixed
function private feature is available which means the GL3 driver will
fall back to always using the GLSL progend. Since Rob's latest patches
the GLSL progend no longer uses any fixed function API anyway so it
should just work.

The driver is currently lower priority than COGL_DRIVER_GL so it will
not be used unless it is specificly requested. We may want to change
this priority at some point because apparently Mesa can make some
memory savings if a core profile context is used.

In GL 3, getting the combined extensions string with glGetString is
deprecated so this patch changes it to use glGetStringi to build up an
array of extensions instead. _cogl_context_get_gl_extensions now
returns this array instead of trying to return a const string. The
caller is expected to free the array.

Some issues with this patch:

• GL 3 does not support GL_ALPHA format textures. We should probably
  make this a feature flag or something. Cogl uses this to render text
  which currently just throws a GL error and breaks so it's pretty
  important to do something about this before considering the GL3
  driver to be stable.

• GL 3 doesn't support client side vertex buffers. This probably
  doesn't matter because CoglBuffer won't normally use malloc'd
  buffers if VBOs are available, but it might but worth making
  malloc'd buffers a private feature and forcing it not to use them.

• GL 3 doesn't support the default vertex array object. This patch
  just makes it create and bind a single non-default vertex array
  object which gets used just like the normal default object. Ideally
  it would be good to use vertex array objects properly and attach
  them to a CoglPrimitive to cache the state.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 66c9db993595b3a22e63f4c201ea468bc9b88cb6)
2013-01-22 17:48:01 +00:00
Neil Roberts
1abf0ed55e pipeline: Don't notify the undefined progend of layer changes
When a layer changes before the pipeline has decided which progend to
use it doesn't need to notify the progend of the change. This was
causing it to crash. This patch makes that change and also simplifies
the notification a bit by just making the calls directly instead of
having three separate functions.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 2006ddd68ea6a5d53b5a810d8dbf39025d9ec04c)
2013-01-22 17:48:01 +00:00
Robert Bragg
de7416fd1d driver-gl: re-indent misleading if-else statement
There was a very, very, very misleading if else statement using no
braces for a single statement if block, followed by a blank line *and*
followed by a comment before the else which was aligned to the 'if'
column, all leading you to believe on first glance that there is no else
block. The fact that Neil and I were both separately mislead by this,
this week, is a pretty compelling reason to clarify this by deleting the
blank line, and moving the comment inside the else block.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 96d9ea78eb56269c0de5283a5302ab095d8bdfce)
2013-01-22 17:48:01 +00:00
Robert Bragg
986ba3aa79 egl: remove special re-try without stencil code
The EGL winsys had a special case code path when trying to create a
context where if it failed it would try again except without requesting
a stencil buffer. Historically this code path was to allow Clutter to
run on PowerVR MBX hardware which doesn't support a stencil buffer. It
doesn't really make sense to keep this workaround in Cogl as it would
leave Cogl in a state where the clip stack doesn't work without
providing any feedback to the developer. If we need to support running
on MBX like hardware - probably not very likely these days - then we
should provide developer control over the stencil buffer so the
equivalent workaround could be implemented on top of Cogl.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit a7c391a985e82707b17f2fb1105de5d37822a390)
2013-01-22 17:48:01 +00:00
Robert Bragg
01937201e4 Unify a lot of gles2 vs gl glsl code
Since we used to support hybrid fixed-function + glsl pipelines when
running with OpenGL there were numerous differences in how we handled
codegen and uniform updates between GLES2 and full OpenGL. Now that we
only support end-to-end glsl pipelines this patch can largely unify how
we handle GLES2 and OpenGL.

Most notably we now never use the builtin attribute names. This should
also make it easy for us to support creating strict OpenGL 3.1 contexts
where the builtin names have been removed.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 2701b93f159bf2d3387cedf2d06fe921ad5641f3)
2013-01-22 17:48:01 +00:00
Robert Bragg
62b472f4f5 add cogl-glsl-shader files to aid backporting patches
To aid with backporting patches from master made after the deprecated
CoglShader api was removed this patch adds the cogl-glsl- files that
have been added on master so we should get less conflicts when cherry
picking.
2013-01-22 17:48:01 +00:00
Robert Bragg
258aba3836 check the glsl version during init
This adds a check for the glsl version during driver init which gets
stored in ctx->glsl_major and ctx->glsl_minor.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 9bde48bda6d602dd536c3536d56d2ff7545802c3)
2013-01-22 17:48:01 +00:00
Robert Bragg
2438d70b38 driver-gl: split out parse_gl_version function
This splits out the GL version parser code from
cogl-driver-gl.c:_cogl_get_gl_version() so it can also be used for
parsing other gl version strings.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 66c2e74b9d61669fb5b93cf9a31cc8659a601fdd)
2013-01-22 17:48:00 +00:00
Neil Roberts
2bcf38d126 Fix a warning in the vtable for texture_2d_get_data
The function pointer for texture_2d_get_data in the driver vtable was
expecting an unsigned int for the rowstride but the definition in
cogl-texture-2d-gl.c took a size_t so it was giving an annoying
warning. This normalizes them both to just take an int. This seems to
better match the pattern used for cogl_bitmap_new_from_data and
cogl_texture_2d_new_from_data.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 003f080531d5368835081568779b031ef4f09a77)
2013-01-22 17:48:00 +00:00
Robert Bragg
8f3380adc3 Clearly define 3 progends that own the frag+vertends
This adds a new "fixed-arbfp" progend so we now have 3 distinct ways of
setting up the state of a pipeline:

  » fixed; where the vertex and fragment processing are implemented
    using fixed function opengl apis.
  » fixed-arbfp; where vertex processing is implemented using fixed
    function opengl apis but fragment processing is implemented
    using the ARB Fragment Processing language.
  » glsl; there vertex and fragment processing are both implemented
    using glsl.

This means we avoid unusual, combinations such as glsl for vertex
processing and arbfp for fragment processing, and also avoid pairing
fixed-function vertex processing with glsl fragment processing which we
happen to know hits some awkward code paths in Mesa that lead to poor
performance.

As part of this change, the progend now implies specific vertend and
fragend choices so instead of associating a vertend and fragend with a
pipeline we now just associate a progend choice.

When flushing a pipeline and choosing what progend to use, we now call a
progend->start() method that is able to determine if the vertend and
fragend together will be able to handle the given pipeline so the
vertend and fragend ->start() methods no longer need to return a boolean
status.

Since we now don't need to support glsl used in conjunction with fixed
function this will allow us to avoid ever using OpenGL builtin attribute
names, though this patch doesn't change that yet.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit cec381f50c7a2f2186bd4a8c5f38fecd5f099075)
2013-01-22 17:48:00 +00:00
Robert Bragg
f05a1a62f4 pipeline: tidy up definition of *END defines
There is some fairly awkward #ifdefing to determine which vertends,
fragends and progends are available at build time. This patch
consolidates the #ifdefing of vertend, fragend and progend defines to
make for slightly easier reading.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 098d6244bf7c8f2a4ca24206c6e8271d589ed4c9)
2013-01-22 17:48:00 +00:00
Robert Bragg
9fd201ffc6 pipeline: remove duplicate defines
There was a spurious duplication of the COGL_PIPELINE_VERTEND_DEFAULT
and COGL_PIPELINE_VERTEND_UNDEFINED defines which this patch removes.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 1bcf34bd3eb0134b7ef1b30cba91d3e70a23e5ed)
2013-01-22 17:48:00 +00:00
Robert Bragg
d20c8e4a71 pipeline: remove unused _MASK defines
The COGL_PIPELINE_FRAGEND_XYZ_MASK and COGL_PIPELINE_VERTEND_XYZ_MASK
defines aren't used any more so this patch simply removes them.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 119b0d771a4be2550ce1ca1e789db5b22776b066)
2013-01-22 17:48:00 +00:00
Robert Bragg
6712aaef45 pipeline: remove dubious optimization
This removes an optimization that I added at some point, which I'm
pretty certain I only added on a hunch. Reading the description I'm not
really convinced it makes sense to do this given that the fixed vertend
and fragend are currently listed before the glsl vertend and fragend in
the order that we look for a suitable backend. This means unless the
pipeline depends on glsl (e.g. due to an associated snippet) we would
reselect the fixed backend anyway, and if it really did depend on glsl
then we'd notice when we come to flush and switch backends there any way.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 071698d2c017af33e41b838429d514f5df5e02a1)
2013-01-22 17:48:00 +00:00
Robert Bragg
b1ecfbf720 buffer: splits out GL specific code
As part of an on-going effort to be able to support non-opengl drivers
for Cogl this splits out the opengl specific code from cogl-buffer.c
into driver/gl/cogl-buffer-gl.c

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 4d7094a979ff2cbbe4054f4a44ca05fc41a9e447)
2013-01-22 17:47:59 +00:00
Robert Bragg
bcf6a61d0b Give buffer/bitmap bind functions gl infix
The buffer and bitmap _bind() functions are GL specific so to clarify
that, this patch adds a _gl infix to these functions, though it doesn't
yet move the implementations out into gl specific files.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 6371fbb9637d88ff187dfb6c4bcd18468ba44d19)
2013-01-22 17:47:59 +00:00
Robert Bragg
91a02e9107 buffer: move choice about using malloc closer to driver
This moves the decision about whether a buffer should be allocated using
malloc or not into cogl-buffer.c closer to the driver since it seem
there could be other driver specific factors that might also influence
this choice that we don't currently consider.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 06d46f10bf755d3009c28904e616a0adb4586cf5)
2013-01-22 17:47:59 +00:00
Robert Bragg
ffd2cf8ef8 clip-stack: Splits out opengl specific code
As part of an on-going effort to enable non-opengl drivers for Cogl this
splits out the opengl specific code in cogl-clip-stack.c into
cogl/driver/cogl-clip-stack-gl.c

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit acf989f1bb628282c53d1249b2e3fc6f6579f1e9)
2013-01-22 17:47:59 +00:00
Robert Bragg
ae713a32d0 Adds a NOP driver
This adds a new "nop" driver that does nothing. This can be selected at
runtime either with the COGL_DRIVER=nop environment variable or by
passing COGL_DRIVER_NOP to cogl_renderer_set_driver()

Adding the nop driver gives us a way to test workloads without any
driver and hardware overheads which can help us understand how Cogl's
state tracking performs in isolation.

Having a nop driver can also serve as an shell/outline for creating
other drivers later.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 90587418233b6438290741d80aedf193ae660cad)
2013-01-22 17:47:59 +00:00
Robert Bragg
4efcd4e6a6 attribute: Split out GL specific code
As part of an on-going effort to enable non-opengl drivers for Cogl this
splits out the GL specific code in cogl-attribute.c into
cogl/driver/gl/cogl-attribute-gl.c

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 7e20c39c47fa176aa5062867ff273bc2c41a2f22)
2013-01-22 17:47:59 +00:00
Robert Bragg
ae2b064fd7 blit: avoid using _COGL_GET_CONTEXT
As part of an on-going effort to avoid depending on a global Cogl
context cogl-blit.c now finds the context by looking at
data->src_text->context instead of using the _COGL_GET_CONTEXT macro.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 3f2c99150494efc04487d0dbd17980bac20e4485)
2013-01-22 17:47:59 +00:00
Robert Bragg
4087e848c4 texture-2d: factor out all GL specific code
This factors out all of the OpenGL specific code in cogl-texture-2d.c
into cogl-texture-2d-gl.c and where necessary adds indirection through
the CoglDriver vtable so that we can eventually start to experiment with
non-OpenGL backends for Cogl.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit ec57588671696bbe7ce714bdfe7324236146c9c0)
2013-01-22 17:47:58 +00:00
Robert Bragg
8326c71b6b texture: rename texobj flush code as gl specific
This renames the set_filters and set_wrap_mode_parameters texture
virtual functions to gl_flush_legacy_texobj_filters and
gl_flush_legacy_texobj_wrap_modes respectively to clarify that they are
opengl driver specific and that they are only used to support the legacy
opengl apis for setting filters and wrap modes where the state is
associated with texture objects instead of being associated with sampler
objects.

This part of an effort to clearly delimit our abstraction over opengl so
that we can start to consider non-opengl backends for Cogl.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 6f78b8a613340d7c6b736e51a16c625f52154430)
2013-01-22 17:47:58 +00:00
Robert Bragg
ab72a2275f build: don't include deps/glib headers if glib enabled
If we're using the system glib library then we need to make sure not to
include headers under deps/glib otherwise we end up with with
incompatible typedefs that break the build.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 5d5fc97b59951ec56a4193b7ee7909ebd3cfbb94)
2013-01-22 17:47:58 +00:00
Damien Lespiau
d2c41502a4 build: Allow to build cogl without an external glib dependency
This commit pushes --disable-glib to the extreme of embedding the par of
glib cogl depends on in tree to be able to generate a DSO that does not
depend on an external glib.

To do so, it:
  - keeps a lot of glib's configure.ac in as-glibconfig.m4
  - pulls the code cogl depends on and the necessary dependencies

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2013-01-22 17:47:58 +00:00
Robert Bragg
df21e20f65 Adds CoglError api
Although we use GLib internally in Cogl we would rather not leak GLib
api through Cogl's own api, except through explicitly namespaced
cogl_glib_ / cogl_gtype_ feature apis.

One of the benefits we see to not leaking GLib through Cogl's public API
is that documentation for Cogl won't need to first introduce the Glib
API to newcomers, thus hopefully lowering the barrier to learning Cogl.

This patch provides a Cogl specific typedef for reporting runtime errors
which by no coincidence matches the typedef for GError exactly.  If Cogl
is built with --enable-glib (default) then developers can even safely
assume that a CoglError is a GError under the hood.

This patch also enforces a consistent policy for when NULL is passed as
an error argument and an error is thrown. In this case we log the error
and abort the application, instead of silently ignoring it. In common
cases where nothing has been implemented to handle a particular error
and/or where applications are just printing the error and aborting
themselves then this saves some typing. This also seems more consistent
with language based exceptions which usually cause a program to abort if
they are not explicitly caught (which passing a non-NULL error signifies
in this case)

Since this policy for NULL error pointers is stricter than the standard
GError convention, there is a clear note in the documentation to warn
developers that are used to using the GError api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit b068d5ea09ab32c37e8c965fc8582c85d1b2db46)

Note: Since we can't change the Cogl 1.x api the patch was changed to
not rename _error_quark() functions to be _error_domain() functions and
although it's a bit ugly, instead of providing our own CoglError type
that's compatible with GError we simply #define CoglError to GError
unless Cogl is built with glib disabled.

Note: this patch does technically introduce an API break since it drops
the cogl_error_get_type() symbol generated by glib-mkenum (Since the
CoglError enum was replaced by a CoglSystemError enum) but for now we
are assuming that this will not affect anyone currently using the Cogl
API. If this does turn out to be a problem in practice then we would be
able to fix this my manually copying an implementation of
cogl_error_get_type() generated by glib-mkenum into a compatibility
source file and we could also define the original COGL_ERROR_ enums for
compatibility too.

Note: another minor concern with cherry-picking this patch to the 1.14
branch is that an api scanner would be lead to believe that some APIs
have changed, and for example the gobject-introspection parser which
understands the semantics of GError will not understand the semantics of
CoglError. We expect most people that have tried to use
gobject-introspection with Cogl already understand though that it is not
well suited to generating bindings of the Cogl api anyway and we aren't
aware or anyone depending on such bindings for apis involving GErrors.
(GnomeShell only makes very-very minimal use of Cogl via the gjs
bindings for the cogl_rectangle and cogl_color apis.)

The main reason we have cherry-picked this patch to the 1.14 branch
even given the above concerns is that without it it would become very
awkward for us to cherry-pick other beneficial patches from master.
2013-01-22 17:47:39 +00:00
Damien Lespiau
4a229cf708 config: Don't read a config file at startup when using --disable-glib
GKeyFile is a bit too much to import in a standalone build for my taste
as it depends on the encoding part of glib.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 9af04f0d8813b7f6f7117e1cc2a38ae2b8d04cdd)
2013-01-22 17:47:24 +00:00
Damien Lespiau
eb92b512c6 core: Don't initialize the GType system with --disable-glib
--disable-glib also defines COGL_HAS_GTYPE_SUPPORT to #ifdef out GType
support in cogl. This also means we don't want to initialize glib's type
system in that case.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 67ad777099d62bdbc8515f6ee58ed80429cc6496)
2013-01-22 17:47:24 +00:00
Robert Bragg
5d62185f1c Re-organize the source layout
As part of an effort towards being able to write non-opengl based
backends for Cogl this moves most of the opengl specific code under
drivers/gl. drivers/gl and drivers/gles have been moved to
drivers/gl/gl and drivers/gl/es respectively.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 7dc482facb0a265c7f48660079e7e12dd7a2813e)
2013-01-22 17:47:19 +00:00
Damien Lespiau
024a143cb8 stb_image: Fix warnings that the original stb_image has
Clean compiler output is a must! that also means imported source code
from other projects. I can't be bothered to submit a patch upstream,
because last time it was totally ignored by the stb_image guy.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit b43b1eac77e2f13d126e2211e12dc0c6d152716e)
2013-01-18 17:28:25 +00:00
Damien Lespiau
24fa64bea2 core: Don't use g_once_*() API
As Cogl is not thread safe, we don't really need a thread safe
cogl_init() function.

This also reduces the amount of dependency cogl has on glib, handy when
we want to create a standalone version of cogl, some day.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 429e49e3028a425eb198d8969dfbf57790e2e72a)
2013-01-18 17:28:25 +00:00
Damien Lespiau
c9fe28c93b renderer: Remove unused error from CoglRendererError
This type is not documented and is experimental. We don't use
COGL_RENDERER_ERROR_NOT_FOUND and it's pretty vague anyway, just remove
it.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit ffa78534616547b9bd4cd5c0ade8fdc039a2b977)
2013-01-18 17:28:25 +00:00
Damien Lespiau
ab91bdf12b build: Remove spurious Makefile.am
These days cogl/ has a non-recursive Makefile.am and an old one was
still present in cogl/driver.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit e1db8e38be72f5372e9d7571a3faec5039e0e6d0)
2013-01-18 17:28:25 +00:00
Robert Bragg
1161870670 matrix: Add cogl_debug_matrix_print api
As a convenience for debugging this adds a cogl_debug_matrix_print
function that prints out the components of a matrix and any internal
flags associated with the given matrix.

(cherry picked from commit 3b33889ff1204f19347a9548320ba95baa54c18c)
2013-01-18 17:28:25 +00:00
Robert Bragg
0ffad6ba20 texture-rectangle: Make new_from_foreign api public
This adds a new public cogl_texture_rectangle_new_from_foreign()
function so that we can look at removing the generic
cogl_texture_new_from_foreign().

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit af02792b336bb492c5bd11afc34a5dcd417503f6)
2013-01-18 17:28:19 +00:00
Robert Bragg
13f228fe69 Remove all remaining _EXP suffix defines
To delimit which symbols were considered experimental we used to use
some preprocessor defines to gives experimental symbols an _EXP suffix
so that anyone monitoring the ABI for changes would easily be able to
discount changes made to clearly experimental functions.

These days we simply rely on the gtk-doc "Stability: unstable"
annotation to serve this purpose because changing the actual symbol name
made it slightly more awkward to debug Cogl using GDB and was an extra
mechanical step we decided we could do without.

This patch removes the last remaining _EXP suffix defines in Cogl

(cherry picked from commit 5a1c4a979e00accd492097cfb8f6a8d0fd8331bc)
2013-01-18 10:53:29 +00:00
Robert Bragg
ce5d06afe1 framebuffer: split GL code out from cogl-framebuffer.c
This splits out most of the OpenGL specific code from cogl-framebuffer.c
into cogl-framebuffer-gl.c and extends the CoglDriverVtable interface
for cogl-framebuffer.c to use.

There are hopes to support several different backends for Cogl
eventually to hopefully get us closer to the metal so this makes some
progress in organizing which parts of Cogl are OpenGL specific so these
parts can potentially be switched out later.

The only remaining use of OpenGL still in cogl-framebuffer.c is to
handle cogl_framebuffer_read_pixels.
2013-01-18 10:53:29 +00:00
Damien Lespiau
87bc616d34 framebuffer: Support texture based depth buffers
This commit introduces some new framebuffer api to be able to
enable texture based depth buffers for a framebuffer (currently
only supported for offscreen framebuffers) and once allocated
to be able to retrieve the depth buffer as a texture for further
usage, say, to implement shadow mapping.

The API works as follow:
  * Before the framebuffer is allocated, you can request that a depth
    texture is created with
    cogl_framebuffer_set_depth_texture_enabled()
  * cogl_framebuffer_get_depth_texture() can then be used to grab a
    CoglTexture once the framebuffer has been allocated.
2013-01-18 10:53:29 +00:00
Tomeu Vizoso
5bce5f88d9 Use the correct type for GLintptr
On 32bit, intptr_t has a different type than khronos_intptr_t.

https://bugzilla.gnome.org/show_bug.cgi?id=691296
(cherry picked from commit a77222385812a696a999a871cde439f50b648f69)
2013-01-08 14:56:25 +01:00
Neil Roberts
f1baa4d60f Clear the scissor before calling glBlitFramebuffer in swap_region
glBlitFramebuffer is affected by the scissor so we need to ensure
there is an empty clip flushed before using it. This is similar to
what is done in _cogl_blit_framebuffer().

https://bugzilla.gnome.org/show_bug.cgi?id=690451

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Tested-by: Aaron Plattner <aplattner@nvidia.com>

(cherry picked from commit 65da3f88af9c7b8d72758d116c2652aff68195c1)
2013-01-07 16:37:29 +00:00
Damien Lespiau
70f71e2627 doc: Generate a valid cogl-context.xml
The automagic paragraph support of gtk-doc is way too simple to support
things like multi-paragraphs <note>s. Let's trick gtk-doc and make it
generate a valid docbook snippet for cogl-context.

Without this, cogl-context remains absent of the reference
documentation, how sad is this?!

(cherry picked from commit 606b472d91450e3221da6631020f534892e866a9)
2013-01-04 17:02:02 +00:00