Cache applied primitive topology.

src/libGLESv2/renderer/Renderer11.cpp

@@ -849,7 +849,11 @@ bool Renderer11::applyPrimitiveType(GLenum mode, GLsizei count)
         return gl::error(GL_INVALID_ENUM, false);
     }
 
-    mDeviceContext->IASetPrimitiveTopology(primitiveTopology);
+    if (primitiveTopology != mCurrentPrimitiveTopology)
+    {
+        mDeviceContext->IASetPrimitiveTopology(primitiveTopology);
+        mCurrentPrimitiveTopology = primitiveTopology;
+    }
 
     return count > 0;
 }
@@ -1816,6 +1820,8 @@ void Renderer11::markAllStateDirty()
     mCurrentVertexConstantBuffer = NULL;
     mCurrentPixelConstantBuffer = NULL;
     mCurrentGeometryConstantBuffer = NULL;
+
+    mCurrentPrimitiveTopology = D3D_PRIMITIVE_TOPOLOGY_UNDEFINED;
 }
 
 void Renderer11::releaseDeviceResources()

src/libGLESv2/renderer/Renderer11.h

@@ -288,6 +288,9 @@ class Renderer11 : public Renderer
     float mCurNear;
     float mCurFar;
 
+    // Currently applied primitive topology
+    D3D11_PRIMITIVE_TOPOLOGY mCurrentPrimitiveTopology;
+
     unsigned int mAppliedIBSerial;
     unsigned int mAppliedStorageIBSerial;
     unsigned int mAppliedIBOffset;