Merging r6488 through r6491 from trunk to ogl-es branch

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6492 dfc29bdd-3216-0410-991c-e03cc46cb475

include/IVideoDriver.h

@@ -13,12 +13,13 @@
 #include "plane3d.h"
 #include "dimension2d.h"
 #include "position2d.h"
-#include "IMeshBuffer.h"
 #include "triangle3d.h"
 #include "EDriverTypes.h"
 #include "EDriverFeatures.h"
+#include "EPrimitiveTypes.h"
 #include "SExposedVideoData.h"
-#include "SOverrideMaterial.h"
+#include "S3DVertex.h"
+#include "SVertexIndex.h"
 
 namespace irr
 {
@@ -43,6 +44,8 @@ namespace video
 	struct S3DVertex2TCoords;
 	struct S3DVertexTangents;
 	struct SLight;
+	struct SOverrideMaterial;
+	class SMaterial;
 	class IImageLoader;
 	class IImageWriter;
 	class IMaterialRenderer;

include/SMaterialLayer.h

@@ -51,7 +51,8 @@ namespace video
 	public:
 		//! Default constructor
 		SMaterialLayer() : Texture(0), TextureWrapU(ETC_REPEAT), TextureWrapV(ETC_REPEAT), TextureWrapW(ETC_REPEAT),
-			BilinearFilter(true), TrilinearFilter(false), AnisotropicFilter(0), LODBias(0), TextureMatrix(0)
+			BilinearFilter(true), TrilinearFilter(false), AnisotropicFilter(0), LODBias(0), 
+			TextureMatrix(0), TextureMatrixUsed(false)
 		{
 		}
 
@@ -84,26 +85,22 @@ namespace video
 				return *this;
 
 			Texture = other.Texture;
-			if (TextureMatrix)
+			if (other.TextureMatrixUsed)
 			{
-				if (other.TextureMatrix)
-					*TextureMatrix = *other.TextureMatrix;
-				else
+				if (TextureMatrix)
 				{
-					MatrixAllocator.destruct(TextureMatrix);
-					MatrixAllocator.deallocate(TextureMatrix);
-					TextureMatrix = 0;
+					*TextureMatrix = *other.TextureMatrix;
 				}
-			}
-			else
-			{
-				if (other.TextureMatrix)
+				else
 				{
 					TextureMatrix = MatrixAllocator.allocate(1);
 					MatrixAllocator.construct(TextureMatrix,*other.TextureMatrix);
 				}
-				else
-					TextureMatrix = 0;
+				TextureMatrixUsed = true;
+			}
+			else
+			{
+				TextureMatrixUsed = false;
 			}
 			TextureWrapU = other.TextureWrapU;
 			TextureWrapV = other.TextureWrapV;
@@ -124,6 +121,12 @@ namespace video
 			{
 				TextureMatrix = MatrixAllocator.allocate(1);
 				MatrixAllocator.construct(TextureMatrix,core::IdentityMatrix);
+				TextureMatrixUsed = true;
+			}
+			else if ( !TextureMatrixUsed )
+			{
+				*TextureMatrix = core::IdentityMatrix;
+				TextureMatrixUsed = true;
 			}
 			return *TextureMatrix;
 		}
@@ -132,7 +135,7 @@ namespace video
 		/** \return Texture matrix of this layer. */
 		const core::matrix4& getTextureMatrix() const
 		{
-			if (TextureMatrix)
+			if (TextureMatrixUsed)
 				return *TextureMatrix;
 			else
 				return core::IdentityMatrix;
@@ -151,25 +154,27 @@ namespace video
 			}
 			else
 				*TextureMatrix = mat;
+			TextureMatrixUsed = true;
 		}
 
 		//! Check if we have set a custom texture matrix
 		//! Note that otherwise we get an IdentityMatrix as default
 		inline bool hasSetTextureMatrix() const
 		{
-			return TextureMatrix != 0;
+			return TextureMatrixUsed;
 		}
 
 		//! Reset texture matrix to identity matrix
-		//! Releases memory, which is expensive, but ver rarely useful for optimizations
-		void resetTextureMatrix()
+		/** \param releaseMemory Releases also texture memory. Otherwise done in destructor */
+		void resetTextureMatrix(bool releaseMemory=true)
 		{
-			if ( TextureMatrix )
+			if ( TextureMatrix && releaseMemory)
 			{
 				MatrixAllocator.destruct(TextureMatrix);
 				MatrixAllocator.deallocate(TextureMatrix);
 				TextureMatrix = 0;
 			}
+			TextureMatrixUsed = false;
 		}
 
 		//! Inequality operator
@@ -189,8 +194,11 @@ namespace video
 			if (different)
 				return true;
 			else
-				different |= (TextureMatrix != b.TextureMatrix) &&
-					(!TextureMatrix || !b.TextureMatrix || (*TextureMatrix != *(b.TextureMatrix)));
+			{
+				different = (TextureMatrixUsed && b.TextureMatrixUsed && (*TextureMatrix != *b.TextureMatrix))
+				         || (TextureMatrixUsed && !b.TextureMatrixUsed && (*TextureMatrix != core::IdentityMatrix))
+				         || (!TextureMatrixUsed && b.TextureMatrixUsed && (core::IdentityMatrix != *b.TextureMatrix));
+			}
 			return different;
 		}
 
@@ -241,6 +249,7 @@ namespace video
 		/** Do not access this element directly as the internal
 		resource management has to cope with Null pointers etc. */
 		core::matrix4* TextureMatrix;
+		bool TextureMatrixUsed;	// TextureMatrix memory stays until destructor even when unused to avoid unnecessary allocation/de-allocations
 	};
 
 } // end namespace video

include/irrlicht.h

@@ -179,6 +179,7 @@
 #include "SKeyMap.h"
 #include "SLight.h"
 #include "SMaterial.h"
+#include "SOverrideMaterial.h"
 #include "SMesh.h"
 #include "SMeshBuffer.h"
 #include "SMeshBufferLightMap.h"