minwebgl 0.3.0

Minimal WebGL toolkit for concise graphics programming with utilities, shaders, and resource management
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

use crate::*;

/// A type alias for the WebGL2 rendering context.
type GL = web_sys::WebGl2RenderingContext;

/// Set default parameters for cube texture (linear filtering, repeat wrapping).
pub fn default_parameters( gl : &GL )
{
  filter_linear( gl );
  wrap_repeat( gl );
}

/// Sets the magnification and minification filters to LINEAR for a cube map.
pub fn filter_linear( gl : &GL )
{
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_MIN_FILTER, GL::LINEAR as i32 );
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_MAG_FILTER, GL::LINEAR as i32 );
}

/// Sets the magnification and minification filters to NEAREST for a cube map.
pub fn filter_nearest( gl : &GL )
{
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_MIN_FILTER, GL::NEAREST as i32 );
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_MAG_FILTER, GL::NEAREST as i32 );
}

/// Sets the wrap mode for S, T, and R dimensions to REPEAT for a cube map.
pub fn wrap_repeat( gl : &GL )
{
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_WRAP_S, GL::REPEAT as i32 );
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_WRAP_T, GL::REPEAT as i32 );
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_WRAP_R, GL::REPEAT as i32 );
}

/// Sets the wrap mode for S, T, and R dimensions to CLAMP_TO_EDGE for a cube map.
pub fn wrap_clamp( gl : &GL )
{
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_WRAP_S, GL::CLAMP_TO_EDGE as i32 );
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_WRAP_T, GL::CLAMP_TO_EDGE as i32 );
  gl.tex_parameteri( GL::TEXTURE_CUBE_MAP, GL::TEXTURE_WRAP_R, GL::CLAMP_TO_EDGE as i32 );
}