SamratGhale
45 lines
1.2 KiB
GLSL
45 lines
1.2 KiB
GLSL
// SPDX-FileCopyrightText: 2024 Erin Catto
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
#version 330
|
|
|
|
uniform mat4 projectionMatrix;
|
|
uniform float pixelScale;
|
|
|
|
layout(location=0) in vec2 v_localPosition;
|
|
layout(location=1) in vec4 v_instanceTransform;
|
|
layout(location=2) in float v_instanceRadius;
|
|
layout(location=3) in float v_instanceLength;
|
|
layout(location=4) in vec4 v_instanceColor;
|
|
|
|
out vec2 f_position;
|
|
out vec4 f_color;
|
|
out float f_length;
|
|
out float f_thickness;
|
|
|
|
void main()
|
|
{
|
|
f_position = v_localPosition;
|
|
f_color = v_instanceColor;
|
|
|
|
float radius = v_instanceRadius;
|
|
float length = v_instanceLength;
|
|
|
|
// scale quad large enough to hold capsule
|
|
float scale = radius + 0.5 * length;
|
|
|
|
// quad range of [-1, 1] implies normalize radius and length
|
|
f_length = length / scale;
|
|
|
|
// resolution.y = pixelScale * scale
|
|
f_thickness = 3.0f / (pixelScale * scale);
|
|
|
|
float x = v_instanceTransform.x;
|
|
float y = v_instanceTransform.y;
|
|
float c = v_instanceTransform.z;
|
|
float s = v_instanceTransform.w;
|
|
vec2 p = vec2(scale * v_localPosition.x, scale * v_localPosition.y);
|
|
p = vec2((c * p.x - s * p.y) + x, (s * p.x + c * p.y) + y);
|
|
gl_Position = projectionMatrix * vec4(p, 0.0, 1.0);
|
|
}
|