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Fix anti-alias width bug on DotCloud

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This commit is contained in:
Grant Sanderson 2023-01-12 19:44:10 -08:00
parent a47b95044d
commit de5198196b
2 changed files with 7 additions and 3 deletions
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5
manimlib/shaders/true_dot/frag.glsl
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@ -13,6 +13,7 @@ in vec4 color;
in float radius; in float radius;
in vec2 center; in vec2 center;
in vec2 point; in vec2 point;
in float scaled_aaw;
out vec4 frag_color; out vec4 frag_color;
@ -22,7 +23,7 @@ void main() {
vec2 diff = point - center; vec2 diff = point - center;
float dist = length(diff); float dist = length(diff);
float signed_dist = dist - radius; float signed_dist = dist - radius;
if (signed_dist > 0.5 * anti_alias_width){ if (signed_dist > 0.5 * scaled_aaw){
discard; discard;
} }
frag_color = color; frag_color = color;
@ -43,5 +44,5 @@ void main() {
frag_color.a *= pow(1 - dist / radius, glow_factor); frag_color.a *= pow(1 - dist / radius, glow_factor);
} }
frag_color.a *= smoothstep(0.5, -0.5, signed_dist / anti_alias_width); frag_color.a *= smoothstep(0.5, -0.5, signed_dist / scaled_aaw);
} }

5
manimlib/shaders/true_dot/geom.glsl
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@ -5,6 +5,7 @@ layout (triangle_strip, max_vertices = 4) out;
// Needed for get_gl_Position // Needed for get_gl_Position
uniform vec2 frame_shape; uniform vec2 frame_shape;
uniform vec2 pixel_shape;
uniform float focal_distance; uniform float focal_distance;
uniform float is_fixed_in_frame; uniform float is_fixed_in_frame;
uniform float anti_alias_width; uniform float anti_alias_width;
@ -17,6 +18,7 @@ out vec4 color;
out float radius; out float radius;
out vec2 center; out vec2 center;
out vec2 point; out vec2 point;
out float scaled_aaw;
#INSERT get_gl_Position.glsl #INSERT get_gl_Position.glsl
@ -25,8 +27,9 @@ void main() {
radius = v_radius[0]; radius = v_radius[0];
center = v_point[0].xy; center = v_point[0].xy;
scaled_aaw = (frame_shape.y / pixel_shape.y);
radius = v_radius[0] / max(1.0 - v_point[0].z / focal_distance / frame_shape.y, 0.0); radius = v_radius[0] / max(1.0 - v_point[0].z / focal_distance / frame_shape.y, 0.0);
float rpa = radius + anti_alias_width; float rpa = radius + scaled_aaw;
for(int i = 0; i < 4; i++){ for(int i = 0; i < 4; i++){
// To account for perspective // To account for perspective