From 2acce4ad70d99b5786995a5627e719ea5394e05b Mon Sep 17 00:00:00 2001
From: Xiang Silian <youmiss@163.com>
Date: Mon, 22 Sep 2025 22:20:49 +0800
Subject: [PATCH] =?UTF-8?q?=E9=98=BF=E6=96=AF=E8=92=82=E8=8A=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 shaders/texture_loading/glsl/point_line.frag  |  39 +++++-------------
 .../texture_loading/glsl/point_line.frag.spv  | Bin 2844 -> 1568 bytes
 shaders/texture_loading/glsl/point_line.vert  |   1 -
 3 files changed, 10 insertions(+), 30 deletions(-)

diff --git a/shaders/texture_loading/glsl/point_line.frag b/shaders/texture_loading/glsl/point_line.frag
index 2104ed2..818bbec 100644
--- a/shaders/texture_loading/glsl/point_line.frag
+++ b/shaders/texture_loading/glsl/point_line.frag
@@ -9,38 +9,19 @@ layout(location = 0) out vec4 outColor;
 void main() {
     vec2 fragPos = gl_FragCoord.xy;
     
-    vec2 start = (fragLineStart.xy * 0.5 + 0.5) * 480.0;
-    vec2 end = (fragLineEnd.xy * 0.5 + 0.5) * 480.0;
+    // 网格参数
+    float gridSize = 14.0;           // 网格大小
+    float dotRadius = 7.0;           // 点状半径
     
-    vec2 lineDir = end - start;
-    float lineLength = length(lineDir);
+    // 计算当前片段所在的网格和网格中心坐标
+    vec2 gridCoord = fragPos / gridSize;
+    vec2 gridCenter = (floor(gridCoord) + 0.5) * gridSize;
     
-    if (lineLength < 1.0) {
-        outColor = vec4(fragColor, 1.0);
-        return;
-    }
+    // 计算片段到网格中心的距离
+    float distanceToCenter = length(fragPos - gridCenter);
     
-    lineDir = normalize(lineDir);
-    vec2 toFrag = fragPos - start;
-    float projection = dot(toFrag, lineDir);
-    projection = clamp(projection, 0.0, lineLength);
-    
-    vec2 closestPoint = start + lineDir * projection;
-    float distanceToLine = length(fragPos - closestPoint);
-    
-    float lineWidth = 6.0;
-    
-    if (distanceToLine > lineWidth) {
-        discard;
-    }
-    
-    float dashLength = 50.0;  
-    float gapLength = 20.0;   
-    
-    float patternLength = dashLength + gapLength;
-    float patternPos = mod(projection, patternLength);
-    
-    if (patternPos > dashLength) {
+    // 如果距离超过点状半径，丢弃（创建点状虚线）
+    if (distanceToCenter > dotRadius) {
         discard;
     }
     
diff --git a/shaders/texture_loading/glsl/point_line.frag.spv b/shaders/texture_loading/glsl/point_line.frag.spv
index c2b932b2d7ad8871b5b6ab0a9f53556f3d46422a..01b5ff5bde518e8ed5d9f998c34bcf9b66b6525a 100644
GIT binary patch
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diff --git a/shaders/texture_loading/glsl/point_line.vert b/shaders/texture_loading/glsl/point_line.vert
index f5a0665..cc00794 100644
--- a/shaders/texture_loading/glsl/point_line.vert
+++ b/shaders/texture_loading/glsl/point_line.vert
@@ -22,7 +22,6 @@ void main() {
     
     fragColor = inColor;
     
-    // 传递裁剪空间坐标
     fragLineStart = (worldviewproj * vec4(inLineStart, 1.0)).xyz;
     fragLineEnd = (worldviewproj * vec4(inLineEnd, 1.0)).xyz;
 }
\ No newline at end of file