updating blur shading, broken

build/CMakeFiles/polypartiCL.dir/compiler_depend.internal

@@ -1033,9 +1033,9 @@ polypartiCL
  /opt/intel/oneapi/compiler/2026.0/lib/libirng.so
  /opt/intel/oneapi/compiler/2026.0/lib/libsvml.so
  /opt/intel/oneapi/compiler/2026.0/lib/libur_loader.so.0
- /tmp/icpx-0a1da134b6/main-6e9924.o
+ /tmp/icpx-6e0c7c75f4/main-0db82a.o
- /tmp/icpx-0a1da134b6/polypartiCL-c43ca4.o
+ /tmp/icpx-6e0c7c75f4/polypartiCL-d70aea.o
- /tmp/icpx-0a1da134b6/polypartiCL-wrapper-5876b9.o
+ /tmp/icpx-6e0c7c75f4/polypartiCL-wrapper-7bf44e.o
  /usr/lib/gcc/x86_64-linux-gnu/15/crtbeginS.o
  /usr/lib/gcc/x86_64-linux-gnu/15/crtendS.o
  /usr/lib/gcc/x86_64-linux-gnu/15/libgcc.a

build/CMakeFiles/polypartiCL.dir/compiler_depend.make

@@ -1030,9 +1030,9 @@ polypartiCL: /lib/x86_64-linux-gnu/Scrt1.o \
   /opt/intel/oneapi/compiler/2026.0/lib/libirng.so \
   /opt/intel/oneapi/compiler/2026.0/lib/libsvml.so \
   /opt/intel/oneapi/compiler/2026.0/lib/libur_loader.so.0 \
-  /tmp/icpx-0a1da134b6/main-6e9924.o \
+  /tmp/icpx-6e0c7c75f4/main-0db82a.o \
-  /tmp/icpx-0a1da134b6/polypartiCL-c43ca4.o \
+  /tmp/icpx-6e0c7c75f4/polypartiCL-d70aea.o \
-  /tmp/icpx-0a1da134b6/polypartiCL-wrapper-5876b9.o \
+  /tmp/icpx-6e0c7c75f4/polypartiCL-wrapper-7bf44e.o \
   /usr/lib/gcc/x86_64-linux-gnu/15/crtbeginS.o \
   /usr/lib/gcc/x86_64-linux-gnu/15/crtendS.o \
   /usr/lib/gcc/x86_64-linux-gnu/15/libgcc.a \
@@ -1074,6 +1074,8 @@ polypartiCL: /lib/x86_64-linux-gnu/Scrt1.o \
 
 /usr/lib/gcc/x86_64-linux-gnu/15/crtbeginS.o:
 
+/tmp/icpx-6e0c7c75f4/main-0db82a.o:
+
 /opt/intel/oneapi/compiler/2026.0/lib/libsvml.so:
 
 /opt/intel/oneapi/compiler/2026.0/lib/libimf.so:
@@ -1208,8 +1210,6 @@ polypartiCL: /lib/x86_64-linux-gnu/Scrt1.o \
 
 /opt/intel/oneapi/compiler/2026.0/include/unified-runtime/ur_api_funcs.def:
 
-/tmp/icpx-0a1da134b6/polypartiCL-wrapper-5876b9.o:
-
 /opt/intel/oneapi/compiler/2026.0/include/sycl/version.hpp:
 
 /opt/intel/oneapi/compiler/2026.0/include/sycl/usm/usm_allocator.hpp:
@@ -1258,8 +1258,6 @@ polypartiCL: /lib/x86_64-linux-gnu/Scrt1.o \
 
 /opt/intel/oneapi/compiler/2026.0/include/sycl/memory_enums.hpp:
 
-/tmp/icpx-0a1da134b6/main-6e9924.o:
-
 /opt/intel/oneapi/compiler/2026.0/include/sycl/marray.hpp:
 
 /opt/intel/oneapi/compiler/2026.0/include/sycl/known_identity.hpp:
@@ -1282,6 +1280,8 @@ polypartiCL: /lib/x86_64-linux-gnu/Scrt1.o \
 
 /opt/intel/oneapi/compiler/2026.0/include/sycl/item.hpp:
 
+/tmp/icpx-6e0c7c75f4/polypartiCL-d70aea.o:
+
 /opt/intel/oneapi/compiler/2026.0/include/sycl/info/platform_traits.def:
 
 /opt/intel/oneapi/compiler/2026.0/include/sycl/info/kernel_traits.def:
@@ -1332,6 +1332,8 @@ polypartiCL: /lib/x86_64-linux-gnu/Scrt1.o \
 
 /opt/intel/oneapi/compiler/2026.0/include/sycl/detail/tuple.hpp:
 
+/tmp/icpx-6e0c7c75f4/polypartiCL-wrapper-7bf44e.o:
+
 /usr/include/c++/15/bits/shared_ptr_base.h:
 
 /usr/include/c++/15/bits/hashtable.h:
@@ -2106,8 +2108,6 @@ polypartiCL: /lib/x86_64-linux-gnu/Scrt1.o \
 
 /usr/include/c++/15/ext/type_traits.h:
 
-/tmp/icpx-0a1da134b6/polypartiCL-c43ca4.o:
-
 /opt/intel/oneapi/compiler/2026.0/include/sycl/detail/builtins/relational_functions.inc:
 
 /usr/include/c++/15/initializer_list:

particles/load.prtc

@@ -1,4 +1,4 @@
 s
-20000 0.5 0.33333333333 0 360 cyan 1 2
+20000 0.5 0.33333333333 0 360 cyan 0 2
-20000 0.3555 0.783 0 360 magenta 1 2
+20000 0.3555 0.783 0 360 magenta 0 2
-20000 0.6445 0.783 0 360 yellow 1 2
+20000 0.6445 0.783 0 360 yellow 0 2

shaders/noblur.fs

@@ -0,0 +1,31 @@
+#version 330
+
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+uniform vec2 resolution;
+uniform vec2 direction;   // (1,0) for horizontal pass, (0,1) for vertical pass
+
+out vec4 finalColor;
+
+void main()
+{
+    //vec2 texel = direction / resolution;
+
+    // 9-tap Gaussian, weights from Pascal's-triangle-style approximation
+    //const float weight[5] = float[](
+    //    0.227027, 0.1945946, 0.1216216, 0.054054, 0.016216
+    //);
+
+    //vec4 color = texture(texture0, fragTexCoord) * weight[0];
+
+    //for (int i = 1; i < 4; i++) {
+    //    vec2 offset = texel * float(i);
+    //    color += texture(texture0, fragTexCoord + offset) * weight[i];
+    //    color += texture(texture0, fragTexCoord - offset) * weight[i];
+    //}
+
+    finalColor = texture(texture0, fragTexCoord);
+}

src/main.cpp

@@ -51,6 +51,7 @@ int main(int argc, char* argv[]) {
     raylib::RenderTexture2D renderTarget(screenWidth, screenHeight);
     raylib::RenderTexture2D blur(screenWidth, screenHeight);
     raylib::Shader blurShader("", "shaders/blur2.fs");
+    raylib::Shader noBlur("", "shaders/noblur.fs");
     raylib::Shader rotShader("", "shaders/rotate.fs");
     raylib::Vector2 mouse_i, mouse_f, mouse_d;
     raylib::Vector2 midpoint(screenWidth * 0.5, screenHeight * 0.5);
@@ -59,6 +60,7 @@ int main(int argc, char* argv[]) {
     int dirXY = blurShader.GetLocation("direction");
     float resolution[2] = { float(screenWidth), float(screenHeight)};
     blurShader.SetValue(resXY, resolution, RL_SHADER_UNIFORM_VEC2);
+    noBlur.SetValue(resXY, resolution, RL_SHADER_UNIFORM_VEC2);
 
     while(!window.ShouldClose()) {
         if (IsKeyPressed(KEY_R)) rotate = !rotate;
@@ -75,13 +77,12 @@ int main(int argc, char* argv[]) {
         }
         for(const auto& item : sim.getCorners()) lines.push_back({item[0], item[1]});
 
-        if (useShader) {
+        //if (useShader) {
             renderTarget.BeginMode();
             ClearBackground(BLACK);
 
             if(drawLines) {
-            for(int i = 0; i < (lines.size() - 1); i++) 
+                for(int i = 0; i < (lines.size() - 1); i++) { lines[i].DrawLine(lines[i+1], WHITE); }
-                lines[i].DrawLine(lines[i+1], WHITE);
             }
 
             for (int i = 0; i < sim.getFieldCount(); i++) {
@@ -100,6 +101,7 @@ int main(int argc, char* argv[]) {
             float dirH[2] = {1.0f, 0.0f};
             float dirV[2] = {0.0f, 1.0f};
 
+            if (useShader) {
             blurShader.SetValue(dirXY, dirH, SHADER_UNIFORM_VEC2);
 
             blur.BeginMode();
@@ -111,7 +113,17 @@ int main(int argc, char* argv[]) {
             blur.EndMode();
 
             blurShader.SetValue(dirXY, dirV, SHADER_UNIFORM_VEC2);
-        }
+        } /*else {
+            noBlur.SetValue(dirXY, dirH, SHADER_UNIFORM_VEC2);
+
+            blur.BeginMode();
+                ClearBackground(BLACK);
+                noBlur.BeginMode();
+                DrawTextureRec(renderTarget.texture, {0, 0, resolution[0], -resolution[1]}, {0,0}, WHITE);
+                noBlur.EndMode();
+            blur.EndMode();
+
+        }*/
         while(window.Drawing()) {
             window.ClearBackground(BLACK);
 
@@ -120,23 +132,9 @@ int main(int argc, char* argv[]) {
                 DrawTextureRec(blur.texture, {0, 0, resolution[0], -resolution[1]}, {0,0}, WHITE);
                 blurShader.EndMode();
             } else {
-            if (drawLines) {
+                noBlur.BeginMode();
-                for (int i = 0; i < (int)lines.size() - 1; i++) {
+                DrawTextureRec(renderTarget.texture, {0, 0, resolution[0], -resolution[1]}, {0,0}, WHITE);
-                    lines[i].DrawLine(lines[i+1], WHITE);
+                noBlur.EndMode();
-                }
-            }
-
-            for (int i = 0; i < sim.getFieldCount(); i++) {
-                auto& field = sim.getField(i);
-                int *color = field.getColor();
-                rlBegin(RL_LINES);
-                rlColor4ub(color[0], color[1], color[2], color[3]);
-                for (const auto& p : field.getPositions()) {
-                    rlVertex2f(p[0],p[1]);
-                    rlVertex2f(p[0]+1.0f,p[1]+1.0f);
-                }
-                rlEnd();
-            }
             }
             if(drawFPS) window.DrawFPS(10,10);
          }

src/polypartiCL.cpp

@@ -12,8 +12,8 @@ using namespace sycl;
 
 struct Polyparti::ParticleField::ColCode {
     std::vector<XYVector> positions, velocities;
-    float t, fieldTime = 0, lifeTime = 0;
+    float t, lifeTime = 0, startTime = 0;
-    int count, decay = 0;
+    int count, decay = 0, originCounter = 0;
     int color[4];
     //float decay = 1.0f;
     bool dies = false, dead = false;
@@ -225,18 +225,25 @@ void Polyparti::ParticleField::deleteParticle(int index) {
     colcode->count--;
 }
 
-void Polyparti::ParticleField::updateField(std::vector<XYVector> verticies) {
+void Polyparti::ParticleField::updateField(std::vector<XYVector> verticies, double time) {
-    colcode->checkCollisions(verticies);
+    if(colcode->t > 0) {
-    colcode->moveParticles();
+        ++colcode->originCounter;
-    colcode->fieldTime += colcode->t;
+    } else if (colcode->t < 0) {
+        --colcode->originCounter;
+    }
     if (colcode->dies) {
-        if (colcode->fieldTime >= colcode->lifeTime) {
+        if (time >= colcode->lifeTime) {
             colcode->color[3] -= colcode->decay;
         }
         if (colcode->color[3] <= 0) {
             colcode->dead = true;
         }
     }
+
+    if(colcode->originCounter >= 0) {
+        colcode->checkCollisions(verticies);
+        colcode->moveParticles();
+    }
 }
 
 const std::vector<XYVector>& Polyparti::ParticleField::getPositions() const {
@@ -413,7 +420,7 @@ void Polyparti::Room::loadParticles(std::string name) {
     bool relativeScreen = false;
     bool relativeRoom = false;
     int count;
-    float x, y, deg_start, deg_end, life, decay;
+    float x, y, deg_start, deg_end, start, life, decay;
     std::string color;
 
     char check = partfile.get();
@@ -421,7 +428,8 @@ void Polyparti::Room::loadParticles(std::string name) {
     else if (check == 'r') { relativeRoom = true; }
 
     if (partfile.is_open()) {
-        while (partfile >> count >> x >> y >> deg_start >> deg_end >> color >> life >> decay) {
+        while (partfile >> count >> x >> y >> deg_start >> deg_end >> color >> start 
+                >> life >> decay) {
             if (relativeScreen) {
                 x *= screenWidth;
                 y *= screenHeight;
@@ -435,6 +443,7 @@ void Polyparti::Room::loadParticles(std::string name) {
             newEntry.deg_start = deg_start;
             newEntry.deg_end = deg_end;
             newEntry.color = color;
+            newEntry.start = start;
             newEntry.life = life;
             newEntry.decayRate = decay;
 
@@ -486,7 +495,7 @@ void Polyparti::Room::addFields() { for (auto& i: info) initField(i);}
 
 void Polyparti::Room::updateFields(double time) { 
     for (auto& f : field) {
-        f.updateField(implRoom->corners);
+        f.updateField(implRoom->corners, time);
     }
     field.erase(std::remove_if(field.begin(), field.end(), [](auto& f) { return f.isDead();}), field.end());
 }

src/polypartiCL.hpp

@@ -24,7 +24,7 @@ namespace Polyparti {
 
         void addParticle(float x, float y, float vx, float vy);
         void deleteParticle(int index);
-        void updateField(std::vector<XYVector> verticies);
+        void updateField(std::vector<XYVector> verticies, double time);
         const std::vector<XYVector>& getPositions() const;
         int getSize();
         void setColor(std::string newColor);
@@ -46,7 +46,7 @@ namespace Polyparti {
         std::unique_ptr<ImplRoom> implRoom;
         struct fieldInfo {
             int count;
-            float x, y, deg_start, deg_end, life, decayRate;
+            float x, y, deg_start, deg_end, start, life, decayRate;
             int screenWidth, screenHeight;
             std::string color;
         };