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NEW: add the wireframe rendering mode for debug

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currently we can turn on/off it by 'ctrl+shift+enter'

Change-Id: Ic9e5460e8955376e8e2c1a3701e12a1f0b4216ad
This commit is contained in:
lane.wei 2022-10-14 22:01:04 +08:00 • committed by Lane.Wei
parent c423577e1d
commit b4d66394e7
6 changed files with 62 additions and 6 deletions
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34
resources/shaders/gouraud.fs
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@ -1,4 +1,4 @@
#version 110
#version 130
const vec3 ZERO = vec3(0.0, 0.0, 0.0);
//BBS: add grey and orange
@ -26,11 +26,29 @@ struct SlopeDetection
mat3 volume_world_normal_matrix;
};
//BBS: add wireframe logic
varying vec3 barycentric_coordinates;
float edgeFactor(float lineWidth) {
vec3 d = fwidth(barycentric_coordinates);
vec3 a3 = smoothstep(vec3(0.0), d * lineWidth, barycentric_coordinates);
return min(min(a3.x, a3.y), a3.z);
}
vec3 wireframe(vec3 fill, vec3 stroke, float lineWidth) {
return mix(stroke, fill, edgeFactor(lineWidth));
}
vec3 getWireframeColor(vec3 fill) {
float brightness = 0.2126 * fill.r + 0.7152 * fill.g + 0.0722 * fill.b;
return (brightness > 0.75) ? vec3(0.11, 0.165, 0.208) : vec3(0.988, 0.988, 0.988);
}
uniform vec4 uniform_color;
uniform SlopeDetection slope;
//BBS: add outline_color
uniform bool is_outline;
uniform bool show_wireframe;
uniform bool offset_depth_buffer;
@ -88,9 +106,17 @@ void main()
else if (use_environment_tex)
gl_FragColor = vec4(0.45 * texture2D(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + 0.8 * color * intensity.x, alpha);
#endif
else
gl_FragColor = vec4(vec3(intensity.y) + color * intensity.x, alpha);
else {
//gl_FragColor = vec4(vec3(intensity.y) + color * intensity.x, alpha);
if (show_wireframe) {
vec3 wireframeColor = show_wireframe ? getWireframeColor(color) : color;
vec3 triangleColor = wireframe(color, wireframeColor, 1.0);
gl_FragColor = vec4(vec3(intensity.y) + triangleColor * intensity.x, alpha);
}
else {
gl_FragColor = vec4(vec3(intensity.y) + color * intensity.x, alpha);
}
}
// In the support painting gizmo and the seam painting gizmo are painted triangles rendered over the already
// rendered object. To resolved z-fighting between previously rendered object and painted triangles, values
// inside the depth buffer are offset by small epsilon for painted triangles inside those gizmos.