When having the [0, 0, 0] vector, normalize() won't try to divide by 0
and thus it's always safe to use that funtion.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 64370e7ddd32f25556a1792c00d14adc48a81d45)
Until now, we hardcoded the internal format to GL_RGBA and used the
internal format returned by pixel_format_to_gl() as the format for
checking the texture size and format we're asked to create.
Let's use the proper internal format/format from now on.
This is needed as a later patch introduces DEPTH and DEPTH_STENCIL
textures.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit ec45f60ee2545f88302da314bcdbe1439c4ba9c9)
The usual suspects (more examples ans tests, generated headers) and the
documentation updated to the cogl2 name.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 90b07230692d3fb36ea18c651ae120e472b5380e)
Missing bit of 4bb6eff3dbd50d8fef7d6bdbed55c5aaa70036a8
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 1674cf28f1f5b71bd25a1f253c99825d427dd243)
The y translation was being initialised with the z value and the z
translation was being left as 0.0.
(cherry picked from commit b44feb617ecb9cbf7d53f0d745f686c17ef3246d)
When rendering the debug wireframe Cogl generates a child pipeline of
the application's pipeline to replace the fragment processing.
Previously it was creating a new snippet every time something was
drawn. Cogl doesn't attempt to compare the contents of snippets when
looking in the program cache for a matching pipeline so this would
cause it to generate a new program for every primitive. It then quite
quickly ends printing the warning about there being more than 50
programs in the cache. To fix that this patch makes it cache the
snippet so that Cogl can successfully recognise that it already has a
program generated for the new pipeline.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit c4bb08ee8767b5320980dba10b20921393cb5613)
Previously the CoglDrawFlags passed to
_cogl_framebuffer_draw_indexed_attributes when drawing is redirected
to draw a wireframe are overriden to avoid validating the pipeline,
flushing the framebuffer state and flushing the journal. This ends up
breaking scenes that only contain models drawn from attributes in the
application because nothing will flush the matrices. It seems to make
more sense to just use whatever draw flags were passed from the
original draw command so that it will flush the matrices if the caller
was expecting it.
One problem with this is that if the wireframe causes the journal to
be flushed then it will already have temporarily disabled the
wireframe debug flag so the journal will not be drawn with wireframes.
To fix this the patch adds a CoglDrawFlag to disable the wireframe and
uses that instead of disabling the debug flag.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 283f6733e63ba65d9921f45868edaabbd9420a61)
Previously if an application does not use the matrix stack as a stack
but instead just loads its own matrices for each frame using
cogl_framebuffer_set_modelview_matrix then it will continously push
OP_LOAD entries on the stack and the stack will grow forever. This
patch fixes that use case by resetting the top of the stack to the
last save entry whenever something is pushed that replaces the
previous matrix on the stack.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit d31ed33241a9e9e3bc25f01b2614678827a7a9aa)
This adds some preliminary testing for eulers and quaternions. It
mostly just tests the cogl_matrix_init_from_{quaternion,euler}
functions as well as applying a euler or quaternion transformation to
a framebuffer's modelview matrix.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit a32eb76e16d7d76af2fe8a6ba9151d8826b58864)
This adds the following new functions to apply a rotation described by
a euler or a quaternion to either a CoglMatrix or directly to the
modelview stack of a framebuffer:
cogl_matrix_rotate_quaternion
cogl_matrix_rotate_euler
cogl_framebuffer_rotate_quaternion
cogl_framebuffer_rotate_euler
The direct framebuffer functions have corresponding functions in the
CoglMatrixStack to store an entry describing the rotation.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 5064315678b496395e1d01f266f322d73e55e324)
The _cogl_matrix_entry_equal function has a large switch statement to
do the right kind of comparison for the entry. However most of the
entries have a return statement that is only conditionally reached.
There were no corresponding break statements to the case labels so
presumably if the comparison succeeded for the correct entry type it
would also flow through and try the comparison for the next type which
would be extremely unlikely to pass.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 339db0f9cc3ee2bee4c56f9cb05dcb4ddd6815ed)
This creates a matrix to represent the given euler rotation. This
should be more efficient than creating the matrix by doing three
separate rotations because no separate intermediate matrices are
created and no matrix multiplication is needed.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit e66d9965897999a4889063f6df9a20ea6abf97fe)
The quaternion is not modified so for consistency with the rest of the
API it should probably be const.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 7fa8c05c2ffb90cba03289a04e37866efc0890a5)
The documentation for cogl_quaternion_init_from_array contradicts
itself and says that the array is w,x,y,z in one part but x,y,z,w in
another. This fixes it to say w,x,y,z in both parts.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit b08a81e5dfb05fec867c08c689237fae937341ad)
When --disable-debug is passed to the configure script it was actually
still defining COGL_ENABLE_DEBUG so very little would end up being
disabled. If COGL_ENABLE_DEBUG actually got defined it would also fail
to compile because _cogl_debug_instances and COGL_DEBUG_N_LONGS from
cogl-debug.h were only defined if debugging is enabled but they are
used regardless.
This patch also makes it so that the _COGL_RETURN_IF_FAIL family of
macros that are used when glib support is disabled are now disabled if
debugging is disabled. When the glib macros are used they are already
disabled because we additionally define G_DISABLE_CHECKS.
'COGL_HANDLE_DEBUG' has been removed from the list of defines passed
when debugging is enabled because CoglHandle has already been removed
and it is not used anywhere in the code.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 9811a0101c9cbb4ab95c55a2b41fd10ff4c77d9f)
test-gles2-context was giving a warning because printf was being used
without including stdio.h. This changes it to use g_print and to first
check for g_test_verbose().
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 9f4945e3daa693e1aa56fe4c1ce37fcc545f8558)
The cogl-gles2-gears example will fail to build unless
--enable-cogl-gles2 is enabled in the configure script because it
depends on libcogl-gles2. This patch makes it only conditionally build
the example depending on the BUILD_COGL_GLES2 automake conditional.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 7f57e9c444b6353ac17e920ea4fc63ebe3cc29d3)
This adds a new renderer constraint enum:
COGL_RENDERER_CONSTRAINT_SUPPORTS_GLES2_CONTEXT
that can be used by applications to ensure the renderer they connect to
has support for creating a GLES2 context via cogl_gles2_context_new().
The cogl-gles2-context and cogl-gles2-gears examples and the conformance
tests have been updated to use this constraint.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit ed61463d7194354b26624e8014859f0fbfc06a12)
This adds a conformance test that creates a GLES2 context via the cogl
api and verifies clearing an offscreen framebuffer via the gles2 api,
and switching back and forth between the Cogl and GLES2 apis.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 9369c60a596c0cbc7a8bb9a45d7b8ffb6a848311)
This adds an example of using libcogl-gles2 as a way to port existing
GLES 2.0 based code. This is a port of es2gears in the Mesa demos repo.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit fcb947178858e9d675c5f76e50510282c6b0bf8d)
This adds a library that can be used instead of libGLESv2.so to provide
symbols for the GLES 2.0 api. This can be used for convenience when
using the cogl_gles2_context_ api since you don't need to manually go
through a CoglGLES2Vtable when calling the gles2 api so it should be
easier to port existing gles2 code to integrate with Cogl.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 80d7599a2acefca7d01d8d7de9df524278ef72c5)
This makes it possible to integrate existing GLES2 code with
applications using Cogl as the rendering api.
Currently all GLES2 usage is handled with separate GLES2 contexts to
ensure that GLES2 api usage doesn't interfere with Cogl's own use of
OpenGL[ES]. The api has been designed though so we can provide tighter
integration later.
The api would allow us to support GLES2 virtualized on top of an
OpenGL/GLX driver as well as GLES2 virtualized on the core rendering api
of Cogl itself. Virtualizing the GLES2 support on Cogl will allow us to
take advantage of Cogl debugging facilities as well as let us optimize
the cost of allocating multiple GLES2 contexts and switching between
them which can both be very expensive with many drivers.
As as a side effect of this patch Cogl can also now be used as a
portable window system binding API for GLES2 as an alternative to EGL.
Parts of this patch are based on work done by Tomeu Vizoso
<tomeu.vizoso@collabora.com> who did the first iteration of adding GLES2
API support to Cogl so that WebGL support could be added to
webkit-clutter.
This patch adds a very minimal cogl-gles2-context example that shows how
to create a gles2 context, clear the screen to a random color and also
draw a triangle with the cogl api.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 4bb6eff3dbd50d8fef7d6bdbed55c5aaa70036a8)
This updates test-atlas-migration from being a Clutter-based test to a
Cogl-based test.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 32c5a3ed546effd2e2946f22f173a20cf36b2fdf)
This fixes a bug in _cogl_pipeline_flush_color_blend_alpha_depth_state
whereby we were only calling flush_depth_state if we knew that at least
depth testing was enabled. This didn't take into account that enabling
and disabling depth writing is a useful change to make even if depth
testing is disabled. It also seemed a bit messy to flush the
depth-testing enable separately from the other depth state.
_cogl_pipeline_flush_color_blend_alpha_depth_state now simply calls
flush_depth_state() if there is a _DEPTH_STATE difference and
flush_depth_state() also handles flushing the depth-testing enable
in along with all the other depth state.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 6a9dfc55b8f55d7023cb592e5bef2118d0f3d50c)
This ensures that when we initialize a CoglOnscreenTemplate that
->swap_throttled is set to TRUE so by default Cogl applications should
have their swap buffer requests throttled to the vblank frequency.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit bdac9ab56284fb84ec09af176c7e31c44dc1bfc6)
This detects when we are running on any of Mesa's software rasterizer
backends and disables use of glBlitFramebuffer and glXCopySubBuffer.
Both of these currently result in full-screen copies so there's little
point in using these to optimize how much of the screen we present.
To help ensure we re-evaluate this workaround periodically we have added
a comment marker of "ONGOING BUG" above the workaround and added a note
to our RELEASING document that says we should grep for this marker and
write a NEWS section about ongoing bug workarounds.
https://bugzilla.gnome.org/show_bug.cgi?id=674208
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 11f2f6ebb42398978ec8dd92b3c332ae8140a728)
The GPU info api previously told us a driver package name and a driver
vendor name, but now we have introduced detection for the gpu
architecture too and started to track architecture feature flags that
can tell us whether a gpu is a deferred or immediate mode renderer for
example or if a software rasterizer is being used.
This also adds support for checking more vendor names. We should now
detect the following cases:
Vendors: Intel, Imagination Technologies, ARM, Qualcomm, Nvidia, ATI
Architectures: Sandybridge, SGX, Mali
Architecture flags:
- vertex tiled
- vertex immediate mode
- vertex software
- fragment deferred
- fragment immediate mode
- fragment software
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit b3803a0a7c9e663ed219e83626841895c7d95ad7)
Tell people that they need to get a stdint.h implementation for Visual C++
2008 for use with Cogl-master/1.99.x+, and where they can obtain such an
implementation.
This is not needed for Visual C++ 2010 as it ships with stdint.h by
default.
(cherry picked from commit 938d70b78d672dd07e7124f7573d17d3e3079365)
There are numerous APIs added/removed in the following commits:
e7f15826 Add a CoglPrimitiveTexture interface
6197e3ab Add constructors which take a CoglBitmap to all primitive textures
bdb645e7 kms: defer setting crtc modes until first swap buffers
9a1f1df8 Rework sdl integration api
ac0c72ab Removed legacy cogl-fixed 1.x api
e8c4c80c Remove deprecated cogl_vertex_buffer api
06d522cb Remove the legacy CoglPath API
713a8f81 Replace cogl_path_{stroke,fill} with framebuffer API
6ed3aaf4 Removes all remaining use of CoglHandle
068b3b59 matrix: Add a init_translation() constructor
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 2625354b8accaebe33ee2747ff03f665aea07e4f)
-Create a pre-defined cogl/cogl-gl-header.h(.win32) that is to be used on
any Windows builds, and adapt the MSVC build process to set up and use
that file.
-Fix up glib-mkenums code generation .bat file that is generated during
"make"/"make dist", like the autotools-based builds.
-Since cogl/cogl-defines.h now contain versionioning info, and it no longer
directly includes the GL headers, update the pre-configured
cogl-defines.h[.win32|.win32_SDL] and use autotools to fill in the
versioning info during "make"/"make dist".
-Fix up cogl/cogl-pango.rc.in so that they reflect the cogl-2.x versioning
stuff correctly and versioning info can be filled in correctly during
"make"/"make dist"
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 7ff42bb1c5280b0f53370f8d94ef5f10c9f39e2f)
Clearly from a copy and paste from init_from_y_rotation().
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 2f06f4d79e29bbf30a44edbf48e8eaa637e30930)
cogl_framebuffer_{get,set}_point_samples_per_pixel() have lost the
'point_' part.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 3c8bcf391090ad0c5f65f300458bfc901fd62800)
The API is now gone, so cogl-clipping.xml is not generated.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit ff3956c25676c898948c5c7239c85154564c0e16)
Several little changes were needed to make the CoglEuler documentation
appear:
• Fix the embeded docbook snippet in the CoglEuler section header
• Add the xinclude directive to the main document
• Add the missing <SECTION> in -sections.txt
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit c7f6e07f7b8ba0d7dc9604e888c8a46165ec3ed4)
Update SDL build configs as there are now SDL-specific public APIs and
new SDL sources.
(cherry picked from commit 006f9f7c44136fc8524649fb790da7f19cd0dc4d)
This allows people to initialize a matrix with a translation
transformation. The options to do it at the moment were:
* init_from_array() but it give cogl no information about the type of
matrix.
* init_indentity() and then translate() but it means doing a lot of
computations for no reason.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 068b3b59221e405dc288d434b0008464684a7c12)
The stock 1.2.x version of SDL only supports regular OpenGL. The
version on WebOS is specially patched to add some extra API to request
a GLES1 or GLES2 context. This patch adds a configure check to detect
when Cogl is being built with the patched version of SDL. In that case
it will additionally allow the gles1 and gles2 drivers and set the
right video mode attributes to get the corresponding context.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 3726c60deab2bd94617a562abb63f735627a25e4)
This fixes a few problems that occur when only using a GLES2 header.
• The use of GL_CLAMP_TO_BORDER and GL_MIRRORED_REPEAT were moved from
cogl-pipelinelayer-state.h to cogl-sampler-cache-private.h but the
corresponding defines were not.
• cogl-sampler-cache.c was using GL_TEXTURE_WRAP_R but this is only
defined as GL_TEXTURE_WRAP_R_OES from the GLES2 header so it needs a
#define.
• cogl-framebuffer-private.h uses GLuint but it does not include
cogl-gl-header.h. It gets away with this when GLX support is enabled
because the GL header would be included via glx.h.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 9cdb87c864fc262c4b26c13963670d60d7c18058)
The function to convert the CoglBufferUpdateHint to a GL enum was
previously ifdef'd to only use GL_STREAM_DRAW when Cogl is compiled
with big GL support. One problem with this is that it would end up
trying to use it on GLES1 if support for both is compiled. The other
problem is that GLES2 seems to actually support GL_STREAM_DRAW so we
might as well use it in that case.
This patch also changes it so that if the hint is stream with GLES1
then it will default to GL_DYNAMIC_DRAW instead of GL_STATIC_DRAW
because I think that is closer to the meaning of the stream hint.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 9e997476a7f9271bc000abdc82b1e343b92afb4c)
