Crash fix when using multiple renderers (do not use static currentPipe) (#428)

Co-authored-by: djdron <[email protected]>

Author: djdron

src/libprojectM/Renderer/Renderer.cpp

@@ -17,8 +17,6 @@
 #include <chrono>
 #include <ctime>
 
-Pipeline* Renderer::currentPipe;
-
 using namespace std::chrono;
 
 class Preset;
@@ -533,7 +531,11 @@ void Renderer::Interpolation(const Pipeline& pipeline, const PipelineContext& pi
 	else
 	{
 		mesh.Reset();
-		omptl::transform(mesh.p.begin(), mesh.p.end(), mesh.identity.begin(), mesh.p.begin(), &Renderer::PerPixel);
+		Pipeline *cp = currentPipe;
+		omptl::transform(mesh.p.begin(), mesh.p.end(), mesh.identity.begin(), mesh.p.begin(),
+			[cp](PixelPoint p, PerPixelContext &context) {
+				return cp->PerPixel(p, context);
+			});
 
 		for (int j = 0; j < mesh.height - 1; j++)
 		{

src/libprojectM/Renderer/Renderer.hpp

@@ -190,7 +190,7 @@ class Renderer
   PerPixelMesh mesh;
   BeatDetect *beatDetect;
   TextureManager *textureManager;
-  static Pipeline* currentPipe;
+  Pipeline* currentPipe;
   TimeKeeper *timeKeeperFPS;
   TimeKeeper *timeKeeperToast;
 
@@ -252,11 +252,6 @@ class Renderer
   void CompositeShaderOutput(const Pipeline &pipeline, const PipelineContext &pipelineContext);
   void CompositeOutput(const Pipeline &pipeline, const PipelineContext &pipelineContext);
 
-  inline static PixelPoint PerPixel(PixelPoint p, PerPixelContext &context)
-  {
-	  return currentPipe->PerPixel(p,context);
-  }
-
   void rescale_per_pixel_matrices();
 
   void draw_toast();