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b8e8d30df0d7e0d211c30c88552cee4d1ced39e2
Commit Graph

233 Commits

Author SHA1 Message Date
Olivier Guyot
b8e8d30df0 Shader Builder / add utilities for checking an expression type 
Type checking is done either against a literal value (number, string...)
or against the operator in case of an expression.

Sometimes it is not possible to infer only one type, for example
the value 'transparent' could either be a color or a string. This
is covered by the fact that all operators expect exactly one type
for their arguments.
 2019-10-22 23:17:00 +02:00
Olivier Guyot
f43637cc33 Shader Builder / support strings in formatColor 2019-10-22 23:17:00 +02:00
Olivier Guyot
a0b271a812 Literal Style / add support for variables in the style 
These variables are accessed using the `var` operator, and are meant
to be mutated directly in the style object. When doing so,
the new value will always be used for the render.

This is intended to be used for modifying the style through external
parameters such as an input field, a slider, mouse position etc.
 2019-10-22 23:17:00 +02:00
Olivier Guyot
94b8cf6af3 Webgl / add support for a time operator in literal styles 
This required adding `u_time` as one of the default uniforms provided by the
webgl helper.
 2019-10-22 23:17:23 +02:00
Olivier Guyot
0c0c8c5d56 Literal Style / add support for a filter property 2019-10-22 23:17:00 +02:00
Olivier Guyot
e38250ee14 ShaderBuilder / add fragment discard expression in shader params 2019-10-22 11:39:30 +02:00
Olivier Guyot
7b66b294a8 ShaderBuilder / attempt to clarify the way attributes are handled in parseSymbolStyle 2019-10-22 11:18:39 +02:00
Olivier Guyot
9ee93cd2cf ShaderBuilder / refactoring to use an actual builder pattern 
There is now a ShaderBuilder class with chainable methods
to specify more easily the contents of the final shaders.
This is to avoid passing around large objects to different functions,
and allow for a richer API.

The documentation has also been corrected and clarified.
 2019-10-22 11:12:06 +02:00
Frederic Junod
f20db28901 Align layer canvas to the left 
So that the position is not affected by the `text-align` css rule.
 2019-10-07 13:48:32 +02:00
Frederic Junod
ea88e6cbd4 Remove invalid undefined type in params 2019-09-27 11:01:50 +02:00
Olivier Guyot
09134a6091 Shader builder / typecheck fix for parse fn 2019-09-26 16:30:19 +02:00
Olivier Guyot
28d157af56 Shader builder / add circle and triangle shapes for symbols 2019-09-26 16:30:19 +02:00
Olivier Guyot
9b3a9b5eca Shader builder / add logic for transforming a style into shader params 
This was previously handled by the WebGLPointsLayer class, but is now
externalized and tested.
 2019-09-26 16:20:35 +02:00
Olivier Guyot
d5caabbbfc Shader builder / add basic expression parsing 
Only a handful of expressions for now, very loosely based on the
mapbox style spec. Also only work on numerical values.
 2019-09-26 16:20:35 +02:00
Olivier Guyot
34572da17b Webgl shader builder / expanded functionality 
Now takes in a custom object with attributes, uniforms etc.
The WebGLPointsLayer uses this to handle image icons.
 2019-09-25 17:22:36 +02:00
Olivier Guyot
9e55a8b2f0 Webgl / linting & test fixes 2019-09-25 17:22:36 +02:00
Olivier Guyot
109f9718f9 Webgl renderer / fix existing examples 
The shaders were rewritten manually for those, althoughj eventually they
should use the shader builder utilities as well.
 2019-09-25 11:09:07 +02:00
Olivier Guyot
2b36445ecc Webgl / Adapt the points renderer to use custom attributes 
Now most attributes will be custom ones defined by the user of the renderer.
The hit detection is broken for now and still has to be fixed.
Also it is not possible anymore to give a texture to the renderer,
this will have to be fixed as well.
 2019-09-25 10:11:27 +02:00
Olivier Guyot
076b674d6f Webgl helper / easier utility for binding attributes 
also a bit of improvement on the doc
 2019-09-24 19:10:07 +02:00
Olivier Guyot
4d7562fca2 Add a new WebGLPointsLayer type using the shader builder utilities 
This required adding a `a_index` attribute in the points layer renderer
to be able to make the precomputed shaders to work.
 2019-09-24 17:24:56 +02:00
Olivier Guyot
a6b8d920b7 Webgl / add a fixed fragment shader builder for symbols 2019-09-24 15:49:07 +02:00
Olivier Guyot
4de0c0b082 Webgl / add a very simple vertex shader builder utility 
This only allows including hardcoded values in the shader,
and only for symbols.
 2019-09-24 15:43:26 +02:00
ahocevar
ebfb20440a Simplify events and store listeners only in one place 2019-09-04 16:48:43 +02:00
Olivier Guyot
29d07ada54 Webgl helper / skip binding texture if underlying image is not ready 2019-08-30 11:02:31 +02:00
Olivier Guyot
c48350b666 Webgl buffer / add utility getSize function 
Saves checking whether the buffer was initialized with
an array already
 2019-08-30 10:38:02 +02:00
Olivier Guyot
2f3e8d04f1 Webgl points / fix hit detection for retina devices 2019-07-11 00:05:55 +02:00
Olivier Guyot
28b99767f8 Webgl points / read only one pixel for feature hit detection 
Also implements `hasFeatureAtCoordinate`.

`hitTolerance` is not supported for now.
 2019-06-28 09:12:20 +02:00
Olivier Guyot
e852294938 Webgl / improve reading of render targets data 
Now two methods are available: `readAll` and `readPixel`,
and the data from the render target is not re-read every time unless
`clearCachedData` is called.
 2019-06-28 09:12:20 +02:00
Olivier Guyot
38920867fb Webgl Helper / Add a method to prepare drawing to render targets 2019-06-28 09:12:20 +02:00
Olivier Guyot
6224d749c4 WebGL / Introduced the WebGLRenderTarget class 
This utility class simplifies rendering to a texture & reading the
results of the render.

It also allows clearing its content before a new render.
 2019-06-28 09:12:20 +02:00
Olivier Guyot
f25a16d90c Webgl helper / rework create texture utils 
Now only one util is available: `createTexture`, which
is tested and allows binding an image and reusing an existing texture.
 2019-06-28 09:12:20 +02:00
Olivier Guyot
b6425187de Remove unused WebGLShader class 2019-06-28 09:06:16 +02:00
Frederic Junod
ef10834eb3 Remove unused constants from ol/webgl 
And change the `EXTENSIONS` constant to a function
 2019-06-20 10:25:22 +02:00
Olivier Guyot
9ae7256048 Merge pull request #9562 from jahow/webgl-worker 
Optimize the WebGL points renderer using a worker
 2019-06-06 08:48:29 +02:00
Olivier Guyot
2412fe0211 Webgl / remove handling of element_index_uint extension 
From now on we will assume this extension is always enabled.

An error message have been added in the unlikely scenario of a lack
of support.
 2019-06-05 14:46:15 +02:00
Frederic Junod
02ce2f4bec Use compose function from ol/transform 2019-06-04 13:23:12 +02:00
Frederic Junod
06be00bbd5 Webgl Helper / add an API for OESElementIndexUint extension 2019-06-01 15:35:27 +02:00
Olivier Guyot
a366803cdd Webgl / use the new buffer API in helper & the points renderer 2019-06-01 15:33:36 +02:00
Olivier Guyot
33d007ce01 Webgl buffer / now stores data in typed arrays 
The `WebGLBuffer` class API was changed in order to allow populating
the internal array in different ways.
 2019-06-01 15:33:31 +02:00
Tim Schaub
deb00f20fe Include full filename in import specifier 2019-05-29 08:51:10 -06:00
Olivier Guyot
5d2b7fe4bb Webgl points / use the helper ton compute the projection transform 
The `WebGLHelper` class now provides a `makeProjectionTransform` method
that updates a transform to match the projection for a given frame state.

This also means that the WebGLHelper does not set the projection matrix
uniform anymore, this is the responsibility of the renderer as
the rendered coordinates will not be in world space from now on.
 2019-05-15 10:18:47 +02:00
Olivier Guyot
3e2e45ce6d Webgl helper / add the possibility to use transforms as custom uniforms 
These will be translated into 4x4 matrices in GLSL.
 2019-05-15 10:18:47 +02:00
Olivier Guyot
f69c37566e Improve documentation on webgl and View 2019-05-04 17:26:05 +02:00
Tim Schaub
58c4c9ebb8 Remove unnecessary closure and fix uniform type 2019-04-19 14:33:43 -07:00
Olivier Guyot
c6a859d1ed Webgl / clarify premultiplied alpha handling 
By default, alpha premultiplying should be done by the initial rendering
(eg quads) and not the final post processing pass.

The default post processing pass expects premultiplied color values and
will not do this operation itself.
 2019-04-02 22:12:47 +02:00
Olivier Guyot
b955579a9c Webgl / clarified the buffer binding/flushing logic 
The Webgl points layer renderer has also been optimized accordingly,
giving out much better performance.
 2019-04-02 21:05:31 +02:00
Tim Schaub
511e580c76 Merge pull request #9090 from jahow/add-webgl-points-example 
Add texture & color to the WebGL points renderer
 2018-12-29 22:12:12 -07:00
Olivier Guyot
33c717e159 Use a cleaner way to create a webgl context 2018-12-28 16:10:38 +01:00
Olivier Guyot
62c7a49943 Webgl points / added a texture option & improved doc 2018-12-28 15:53:07 +01:00
Olivier Guyot
0acfd7ab59 WebGL points / Added a color attribute 2018-12-28 15:53:07 +01:00