虚线的代码完成。

shaders/texture_loading/glsl/point_line.frag

@@ -1,24 +1,64 @@
 #version 450
 
 layout(location = 0) in vec3 fragColor;
-layout(location = 1) in float fragLinePosition;
+layout(location = 1) in vec3 fragSegmentStart;
+layout(location = 2) in vec3 fragSegmentEnd;
+layout(location = 3) in vec3 fragWorldPos;
 
 layout(location = 0) out vec4 outColor;
 
+layout(binding = 0) uniform UniformBufferObject {
+    mat4 proj;
+    mat4 model;
+    mat4 view;
+} ubo;
+
+layout(binding = 1) uniform DashParameters {
+    float dashSize;
+    float gapSize;
+    float dashOffset;
+    float uAASize;
+    int useWorldSpace;
+} dashParams;
+
 void main() {
-    // 硬编码虚线参数
-    const float dashSize = 0.05;
-    const float gapSize = 0.05;
+    // 转换为NDC坐标
+    vec3 ndcStart = fragSegmentStart / fragSegmentStart.z;
+    vec3 ndcEnd = fragSegmentEnd / fragSegmentEnd.z;
+    vec3 fragNDC = gl_FragCoord.xyz / gl_FragCoord.z;
+    fragNDC = (fragNDC * 2.0) - 1.0;
+
+    // 计算当前片元在线段上的投影
+    vec2 lineDir = normalize(ndcEnd.xy - ndcStart.xy);
+    vec2 startToFrag = fragNDC.xy - ndcStart.xy;
+    float projection = dot(startToFrag, lineDir);
     
-    // 使用时间创建动画效果（需要GL_EXT_shader_realtime_clock_speed扩展）
-    // 或者使用一个简单的基于帧计数的方法
-    float time = float(gl_FragCoord.x + gl_FragCoord.y) * 0.01; // 简单的伪时间
+    // 计算线段在屏幕空间的长度（用于抗锯齿）
+    float segmentLength = length(ndcEnd.xy - ndcStart.xy);
     
-    float patternPosition = mod(fragLinePosition, dashSize + gapSize);
+    // 应用虚线模式
+    float dashPeriod = dashParams.dashSize + dashParams.gapSize;
+    float currentPos = mod(projection + dashParams.dashOffset, dashPeriod);
     
-    if (patternPosition > dashSize) {
+    // 抗锯齿处理
+    float alpha = 1.0;
+    
+    // 线段开始处的抗锯齿（避免线段起始处出现半截虚线）
+    alpha *= smoothstep(0.0, dashParams.uAASize / segmentLength, projection);
+    
+    // 线段结束处的抗锯齿  
+    alpha *= 1.0 - smoothstep(segmentLength - dashParams.uAASize / segmentLength, 
+                             segmentLength, projection);
+    
+    // 虚线模式抗锯齿
+    alpha *= 1.0 - smoothstep(dashParams.dashSize, 
+                             dashParams.dashSize + dashParams.uAASize / dashPeriod, 
+                             currentPos);
+    
+    // 如果alpha接近0，直接丢弃片元
+    if (alpha < 0.01) {
         discard;
     }
     
-    outColor = vec4(fragColor, 1.0);
+    outColor = vec4(fragColor, alpha);
 }

shaders/texture_loading/glsl/point_line.vert

@@ -2,9 +2,13 @@
 
 layout(location = 0) in vec3 inPosition;
 layout(location = 1) in vec3 inColor;
+layout(location = 2) in vec3 inLineStart;
+layout(location = 3) in vec3 inLineEnd;
 
 layout(location = 0) out vec3 fragColor;
-layout(location = 1) out float fragLinePosition; // 用于虚线计算
+layout(location = 1) out vec3 fragLineStart;
+layout(location = 2) out vec3 fragLineEnd;
+
 
 layout(binding = 0) uniform UniformBufferObject {
     mat4 proj;
@@ -13,11 +17,12 @@ layout(binding = 0) uniform UniformBufferObject {
 } ubo;
 
 void main() {
-    mat4 mvp = ubo.proj * ubo.view * ubo.model;
-    gl_Position = mvp * vec4(inPosition, 1.0);
-    fragColor = inColor;
-    gl_PointSize = 2.0;
+    mat4 worldviewproj = ubo.proj * ubo.view * ubo.model;
+    gl_Position = worldviewproj * vec4(inPosition, 1.0);
     
-    // 硬编码虚线参数：使用模型空间的X坐标，你可以根据需要调整
-    fragLinePosition = inPosition.x;
+    fragColor = inColor;
+    
+    // 传递裁剪空间坐标
+    fragLineStart = (worldviewproj * vec4(inLineStart, 1.0)).xyz;
+    fragLineEnd = (worldviewproj * vec4(inLineEnd, 1.0)).xyz;
 }