[#111] use include in shaders

projects/sph/shaders/flip.comp

 #version 450 core
 #extension GL_ARB_separate_shader_objects : enable
+#extension GL_GOOGLE_include_directive : enable
 
 layout(local_size_x = 256) in;
 

projects/sph/shaders/force.comp

 #version 450 core
 #extension GL_ARB_separate_shader_objects : enable
+#extension GL_GOOGLE_include_directive : enable
 
 const float PI = 3.1415926535897932384626433832795;
 
-#define h 0.045
-#define gravity -9.81
-#define mass 0.1
-#define viscosity 1500
+#include "particle_params.inc"
 
 layout(local_size_x = 256) in;
 

projects/sph/shaders/particle_params.inc

+#define h 0.045
+#define mass 0.1
+#define gasConstant 300
+#define offset 1800
+#define gravity -9.81
+#define viscosity 1500

projects/sph/shaders/pressure.comp

 #version 450 core
 #extension GL_ARB_separate_shader_objects : enable
+#extension GL_GOOGLE_include_directive : enable
 
 const float PI = 3.1415926535897932384626433832795;
 
-#define h 0.045
-#define mass 0.1
-#define gasConstant 300
-#define offset 1800
+#include "particle_params.inc"
 
 layout(local_size_x = 256) in;
 

projects/sph/shaders/updateData.comp

 #version 450 core
 #extension GL_ARB_separate_shader_objects : enable
+#extension GL_GOOGLE_include_directive : enable
 
 #define ABSORBTION 0.9
 #define dt 0.0001