Commit graph

35 commits

Author SHA1 Message Date
Thibault Saunier
78022a6e0c docs: Port all docstring to gtk-doc markdown 2017-04-12 12:57:57 -03:00
Matthew Waters
efc015f27d gl: GL_ARRAY_BUFFER is not a part of VAO state
As a result we need to bind it on every draw in order to have the
correct state in the GL state machine.
2017-03-14 14:15:00 +11:00
Matthew Waters
3f7b549881 gl/utils: move gen_shader() to the plugin and remove del_shader()
gst_gl_context_del_shader() can be replaced by a g_object_unref().
gst_gl_context_gen_shader() should be replaced by using GstGLSLStage.
2016-11-10 20:11:03 +11:00
Matthew Waters
cafcde5586 glfilter: remove display_init/reset
They are mirrors of GstGLBaseFilter's gl_start() and gl_stop() virtual methods
so use them instead.
2016-11-08 02:21:20 +11:00
Nirbheek Chauhan
f790863755 Explicitly define float constants as float
With MSVC, this gives the following warning:

warning C4305: 'function': truncation from 'double' to 'gfloat'

Apparently, MSVC does not figure out what type to use for constants
based on the assignment. This warning is very spammy, so let's try to
fix it.
2016-10-27 23:06:26 +05:30
Matthew Waters
9d66a3447f gltransformation: rewrite the inverse transformation logic
It now returns the correct values for both orthographic and perspective
projections and takes into account the aspect ratio of the video, handles
the Y-flipping in GL and by us and uses some more helpers from graphene.
2016-08-19 16:09:04 +10:00
Matthew Waters
518e8a3fd2 glframebuffer: rewrite for a more consistent API
Facilities are given to create fbo's and attach GL memory (renderbuffers
or textures).  It also keeps track of the renderable size for use with
effective use with glViewport().
2016-07-26 14:07:24 +10:00
Matthew Waters
aa109016a3 gl: use GLMemory for accessing textures everywhere
This simplifies and consolidates a lot of duplicated code creating
and modifying textures.
2016-07-26 14:07:24 +10:00
Arjen Veenhuizen
113d5c143c gltransformation: make the pivot-z property READWRITE
Instead of just being READABLE.

https://bugzilla.gnome.org/show_bug.cgi?id=766818
2016-05-24 23:30:09 +10:00
Matthew Waters
7507b14dcd gltransformation: use the affine transformation meta if available downstream
We can avoid a render pass if downstream supports the affine transformation meta
and increase the performance of some pipelines involving gltransformation.

Implemented by checking for the affine transformation in the allocation query
from downstream and combining our matrix with that of upstream's (or creating
our own).
2016-05-14 16:35:29 +03:00
Matthew Waters
81692a99f3 gltransformation: reconfigure the src when changing to/from passthrough
Otherwise it's very possible that any GL resources have not been created yet.
2016-02-03 17:16:39 +11:00
Matthew Waters
198d451f31 gltransformation: always build a valid mvp matrix
The default case is to build an identity matrix.
2016-01-15 12:05:02 +11:00
Matthew Waters
f721499371 gltransformation: support negative scales
A scale of -1.0 means to flip the video.
2016-01-15 12:05:02 +11:00
Matthew Waters
12f013c8d7 gltransformation: implement passthrough handling 2016-01-15 12:05:02 +11:00
Matthew Waters
066f0dcda0 gltransformation: implement navigation events
Reverses the transformation applied through the properties and forwards the
event.

The process for finding the coordinates on the video are as follows:
1. Convert the given pointer_x and pointer_y to model space at the near and far planes
2. Get the equation of the video plane
3. Find where the ray in 1 intersects the plane
4. Profit!
2016-01-15 12:04:59 +11:00
Vineeth TM
7c42ba97d7 plugins-bad: Fix example pipelines
rename gst-launch --> gst-launch-1.0
replace old elements with new elements(ffmpegcolorspace -> videoconvert, ffenc_** -> avenc_**)
fix caps in examples

https://bugzilla.gnome.org/show_bug.cgi?id=759432
2015-12-15 10:30:49 +00:00
Matthew Waters
e602e4a1cc gltransformation: clear to transparent
Otherwise composition will result in a black frame outside the transformed
video.
2015-12-12 09:33:38 +11:00
Lubosz Sarnecki
80d77aa0a5 gltransformation: implement pivot point for rotation and scale
https://bugzilla.gnome.org/show_bug.cgi?id=744763

Add a pivot vector for setting the origin of rotations and scales.

With the pivot point the rotation and scale operations can have
different origins. This adds the ability to rotate around different points.
Currently the default (0, 0) pivot point is possible,
a rotation around the center, and zooming into and out of the center.

With an pivot point this is optional.
I defined the following image coordinates for the pivot point:

	 (-1,1) ------------------------- (1,1)
		|			|
		|			|
		|			|
		|	  (0,0)		|
		|			|
		|			|
		|			|
	(-1,-1) ------------------------- (1,-1)

Example:

	Rotate the video at the bottom left corner

	gst-launch-1.0 videotestsrc \
			! gltransformation \
		 		scale-x=0.5 \
				scale-y=0.5 \
				rotation-z=25.0 \
				pivot-x=-1.0 \
				pivot-y=-1.0 \
			! glimagesink

The pivot-z option defines the pivot point in 3D space.
This only affects rotation, since we have no Z data to scale.
With this option a video can be rotated around a point in 3D space.

Example:

	Rotate around point behind the video:

    	gst-launch-1.0 videotestsrc \
			! gltransformation \
				rotation-x=10.0 \
				pivot-z=-4.0 \
			! glimagesink
2015-08-08 16:32:53 -04:00
Matthew Waters
2b9dddbafe gltransformation: correct vao usage
keep the vao bound after uploading the new vertex data

fixes a mesa GL error "no vertex array object bound" on caps changes
2015-07-07 15:32:13 +10:00
Matthew Waters
9dcefacb3d gltransformation: fix DrawElements call for element array buffers
https://bugzilla.gnome.org/show_bug.cgi?id=749734
2015-05-25 17:39:08 +10:00
Matthew Waters
7f7a9dd3ec gl: element buffers are part of vao state
Use them as such.  They are also required for GL3 core profile support
with glDrawElements on OS X.
2015-05-14 14:58:07 +10:00
Matthieu Bouron
c6ec145a95 gltransformation: Unref shader in ::stop() 2015-04-27 10:16:24 +02:00
Sebastian Dröge
e7aa25ca6f glfilter: De-camelcase onInitFBO() vfunc 2015-04-26 21:42:03 +02:00
Lubosz Sarnecki
51daa8b9e2 gltransformation: don't initialize multiple shaders on renegotiation
https://bugzilla.gnome.org/show_bug.cgi?id=748407

* delete shader if one exists
* set it to NULL after unrefing
2015-04-26 21:23:16 +02:00
Lubosz Sarnecki
5c07218bd2 gltransformation: fix shader memory leak 2015-04-21 16:37:17 +10:00
Matthew Waters
34485c9976 gl: get the context from basemixer/basefilter 2015-03-13 12:30:20 +00:00
Xavier Claessens
128c2a141a gltransformation: normalize translations
https://bugzilla.gnome.org/show_bug.cgi?id=744763

* Lubosz: use maxfloat for transformation range
2015-03-03 14:05:21 -05:00
Xavier Claessens
80f97eaee7 gltransformation: Fix doc typo
https://bugzilla.gnome.org/show_bug.cgi?id=744763
2015-03-03 14:05:21 -05:00
Nicolas Dufresne
4ea15b1b3f gltransform: Fix includes of graphene headers
The graphene-1.0 part should not be in the source code. This directory
is part of the cflags include. This is similar to gstreamer-1.0/
directory. This break compilation if the include directory where
graphene is installed is not in your include path.
2015-02-18 17:15:01 -05:00
Matthew Waters
f021549294 gl: fixup vao and vbo usage for legacy GL 2014-12-11 19:41:23 +11:00
Matthew Waters
3c1e77eb31 gldisplay: implement runtime GL api filtering
Needed so that the pipeline/application can limit the choice of GL api
to what it supports
2014-11-28 09:14:26 +11:00
Matthew Waters
3772c83f94 gltransformation: support gl3 2014-11-28 09:14:25 +11:00
Lubosz Sarnecki
04034b11f4 gltransformation: graphene multiplication order has changed
https://bugzilla.gnome.org/show_bug.cgi?id=733510
2014-09-30 22:11:35 +10:00
Lubosz Sarnecki
f1b026c480 gltransformation: fix issues and expose mvp matrix
* aspect should not be 0 on init
* rename fovy to fov
* add mvp to properties as boxed graphene type
* fix transformation order. scale first
* clear color with 1.0 alpha

https://bugzilla.gnome.org/show_bug.cgi?id=734223
2014-09-05 09:39:34 +10:00
Lubosz Sarnecki
053252ccc6 opengl: add element for transforming video geometry
* add graphene as soft dependency for linear algebra
2014-06-18 20:41:03 +10:00