Metadata-Version: 2.1
Name: zengl
Version: 1.12.0
Summary: Self-Contained OpenGL Rendering Pipelines for Python
Home-page: https://github.com/szabolcsdombi/zengl/
Author: Szabolcs Dombi
Author-email: cprogrammer1994@gmail.com
License: MIT
Project-URL: Documentation, https://zengl.readthedocs.io/
Project-URL: Source, https://github.com/szabolcsdombi/zengl/
Project-URL: Bug Tracker, https://github.com/szabolcsdombi/zengl/issues/
Keywords: OpenGL,rendering,graphics,visualization
Platform: any
Classifier: Programming Language :: Python :: 3
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Topic :: Games/Entertainment
Classifier: Topic :: Multimedia :: Graphics
Classifier: Topic :: Multimedia :: Graphics :: 3D Rendering
Classifier: Topic :: Scientific/Engineering :: Visualization
Requires-Python: >=3.6
Description-Content-Type: text/markdown
License-File: LICENSE

# ZenGL

[![ZenGL](https://repository-images.githubusercontent.com/420309094/f7c17e13-4d5b-4a38-8b52-ab2dfdacd5a0)](#zengl)

```
pip install zengl
```

- [Documentation](https://zengl.readthedocs.io/)
- [zengl on Github](https://github.com/szabolcsdombi/zengl/)
- [zengl on PyPI](https://pypi.org/project/zengl/)

## Concept

ZenGL provides a simple way to render from Python. We aim to support headless rendering first,
rendering to a window is done by blitting the final image to the screen. By doing this we have full control of
what we render. The window does not have to be multisample, and it requires no depth buffer at all.

[read more...](https://zengl.readthedocs.io/en/latest/#concept)

## Examples

```
pip install -r examples/requirements.txt
python examples/example_browser.py
```

#### [grass.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/grass.py)

[![grass](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/grass.png)](#grasspy)

#### [envmap.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/envmap.py)

[![envmap](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/envmap.png)](#envmappy)

#### [normal_mapping.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/normal_mapping.py)

[![normal_mapping](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/normal_mapping.jpg)](#normal_mappingpy)

#### [rigged_objects.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/rigged_objects.py)

[![rigged_objects](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/rigged_objects.png)](#rigged_objectspy)

#### [instanced_crates.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/instanced_crates.py)

[![instanced_crates](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/instanced_crates.jpg)](#instanced_cratespy)

#### [julia_fractal.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/julia_fractal.py)

[![julia_fractal](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/julia_fractal.png)](#julia_fractalpy)

#### [blending.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/blending.py)

[![blending](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/blending.png)](#blendingpy)

#### [render_to_texture.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/render_to_texture.py)

[![render_to_texture](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/render_to_texture.png)](#render_to_texturepy)

#### [pybullet_box_pile.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/pybullet_box_pile.py)

[![pybullet_box_pile](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/pybullet_box_pile.png)](#pybullet_box_pilepy)

#### [pygmsh_shape.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/pygmsh_shape.py)

[![pygmsh_shape](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/pygmsh_shape.png)](#pygmsh_shapepy)

#### [texture_array.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/texture_array.py)

[![texture_array](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/texture_array.png)](#texture_arraypy)

#### [monkey.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/monkey.py)

[![monkey](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/monkey.png)](#monkeypy)

#### [reflection.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/reflection.py)

[![reflection](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/reflection.png)](#reflectionpy)

#### [polygon_offset.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/polygon_offset.py)

[![polygon_offset](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/polygon_offset.png)](#polygon_offsetpy)

#### [blur.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/blur.py)

[![blur](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/blur.png)](#blurpy)

#### [hello_triangle.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/hello_triangle.py)

[![hello_triangle](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/hello_triangle.png)](#hello_trianglepy)

#### [hello_triangle_srgb.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/hello_triangle_srgb.py)

[![hello_triangle_srgb](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/hello_triangle_srgb.png)](#hello_triangle_srgbpy)

#### [viewports.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/viewports.py)

[![viewports](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/viewports.png)](#viewportspy)

#### [points.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/points.py)

[![points](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/points.png)](#pointspy)

#### [wireframe_terrain.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/wireframe_terrain.py)

[![wireframe_terrain](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/wireframe_terrain.png)](#wireframe_terrainpy)

#### [crate.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/crate.py)

[![crate](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/crate.png)](#cratepy)

#### [sdf_example.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/sdf_example.py)

[![sdf_example](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/sdf_example.png)](#sdf_examplepy)

#### [sdf_tree.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/sdf_tree.py)

[![sdf_tree](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/sdf_tree.png)](#sdf_treepy)

#### [mipmaps.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/mipmaps.py)

[![mipmaps](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/mipmaps.png)](#mipmapspy)

#### [conways_game_of_life.py](https://github.com/szabolcsdombi/zengl/blob/main/examples/conways_game_of_life.py)

[![conways_game_of_life](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/conways_game_of_life.png)](#conways_game_of_lifepy)

#### Headless

```py
import zengl
from PIL import Image

ctx = zengl.context(zengl.loader(headless=True))

size = (1280, 720)
image = ctx.image(size, 'rgba8unorm', samples=1)

triangle = ctx.pipeline(
    vertex_shader='''
        #version 330

        out vec3 v_color;

        vec2 positions[3] = vec2[](
            vec2(0.0, 0.8),
            vec2(-0.6, -0.8),
            vec2(0.6, -0.8)
        );

        vec3 colors[3] = vec3[](
            vec3(1.0, 0.0, 0.0),
            vec3(0.0, 1.0, 0.0),
            vec3(0.0, 0.0, 1.0)
        );

        void main() {
            gl_Position = vec4(positions[gl_VertexID], 0.0, 1.0);
            v_color = colors[gl_VertexID];
        }
    ''',
    fragment_shader='''
        #version 330

        in vec3 v_color;

        layout (location = 0) out vec4 out_color;

        void main() {
            out_color = vec4(v_color, 1.0);
        }
    ''',
    framebuffer=[image],
    topology='triangles',
    vertex_count=3,
)

image.clear_value = (1.0, 1.0, 1.0, 1.0)
image.clear()
triangle.render()

Image.frombuffer('RGBA', size, image.read(), 'raw', 'RGBA', 0, -1).save('hello.png')
```

### Type Hints

[![linting_01](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/linting/linting_01.png)](#typehints)

[![linting_02](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/linting/linting_02.png)](#typehints)

[![linting_03](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/linting/linting_03.png)](#typehints)

[![linting_04](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/linting/linting_04.png)](#typehints)

[![linting_05](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/linting/linting_05.png)](#typehints)

[![linting_06](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/linting/linting_06.png)](#typehints)

[![linting_07](https://github.com/szabolcsdombi/zengl-example-images/raw/examples/linting/linting_07.png)](#typehints)
