grakopro/cw_8/shaders/part.vert

#version 430 core
layout (location = 0) in vec3 vertex;
layout (location = 1) in vec2 texCoords;

out vec2 TexCoords;
out vec4 ParticleColor;

uniform mat4 transformation;
uniform vec3 position;
uniform vec4 color;

uniform float engPow;

uniform vec3 cameraUp;
uniform vec3 cameraSide;

void main()
{
    float scale = 0.05f + engPow/20;
    TexCoords = texCoords;
    ParticleColor = color;
    vec3 worldspacePos = cameraSide*vertex.x + cameraUp*vertex.y;
    gl_Position = transformation * vec4((worldspacePos.xyz * scale) + position, 1.0);
}