Fix #3678 (#3689)

NCAR · Dec 3, 2024 · 64be581 · 64be581
1 parent e512763
commit 64be581
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/include/vapor/ParticleRenderer.h b/include/vapor/ParticleRenderer.h
@@ -72,7 +72,7 @@ class RENDER_API ParticleRenderer : public Renderer {
         float      value;
     };
 
-    size_t _particlesCount;
+    size_t _particlesCount = 0;
 
     unsigned int _VAO = 0;
     unsigned int _VBO = 0;

diff --git a/lib/render/ParticleRenderer.cpp b/lib/render/ParticleRenderer.cpp
@@ -413,10 +413,10 @@ void ParticleRenderer::_generateTextureData(const Grid* grid, const std::vector<
 
     if (showDir) {
         SetupParticleDirectionGL(_VAO, _VBO, dynamicSize);
-        directionData.reserve(_particlesCount);
+        directionData.reserve(grid->GetDimensions()[0]/stride+1);
     } else {
         SetupParticlePointGL(_VAO, _VBO, dynamicSize);
-        pointData.reserve(_particlesCount);
+        pointData.reserve(grid->GetDimensions()[0]/stride+1);
     }
     assert(glIsVertexArray(_VAO) == GL_TRUE);
     assert(glIsBuffer(_VBO) == GL_TRUE);