From 71ee6c99e963d96286cae8d0bfc2f20a9c9c920b Mon Sep 17 00:00:00 2001 From: Ilion Beyst Date: Wed, 29 Dec 2021 22:54:30 +0100 Subject: move assets to visualizer package --- web/pw-visualizer/assets/shaders/vert/simple.glsl | 36 +++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 web/pw-visualizer/assets/shaders/vert/simple.glsl (limited to 'web/pw-visualizer/assets/shaders/vert/simple.glsl') diff --git a/web/pw-visualizer/assets/shaders/vert/simple.glsl b/web/pw-visualizer/assets/shaders/vert/simple.glsl new file mode 100644 index 0000000..935decf --- /dev/null +++ b/web/pw-visualizer/assets/shaders/vert/simple.glsl @@ -0,0 +1,36 @@ +#ifdef GL_ES +precision mediump float; +#endif + +attribute vec2 a_position; +attribute vec2 a_texCoord; + +uniform float u_time; + +uniform vec4 u_viewbox; // [x, y, width, height] +uniform vec2 u_resolution; +uniform mat3 u_trans; +uniform mat3 u_trans_next; + +varying vec2 v_pos; +varying vec2 v_texCoord; + +void main() { + vec3 pos = vec3(a_position, 1.0); + + mat3 trans = (u_trans_next * (1.0 - u_time)) + (u_trans * u_time); + + pos = trans * pos; + + vec2 uv = pos.xy; + + // Viewbox's center is top left, a_position's is in the center to the screen + // So translate and scale the viewbox** + uv -= u_viewbox.xy + (u_viewbox.zw * 0.5); + uv /= u_viewbox.zw * 0.5; + + v_pos = (uv.xy + 1.0) * 0.5; + + gl_Position = vec4(uv.xy, 0.0, 1.0); + v_texCoord = a_texCoord; +} -- cgit v1.2.3