Merge of first part of changes from the apricot branch, especially

the features that are needed to run the game. Compile tested with
scons, make, but not cmake, that seems to have an issue not related
to these changes. The changes include:

* GLSL support in the viewport and game engine, enable in the game
  menu in textured draw mode.
* Synced and merged part of the duplicated blender and gameengine/
  gameplayer drawing code.
* Further refactoring of game engine drawing code, especially mesh
  storage changed a lot.
* Optimizations in game engine armatures to avoid recomputations.
* A python function to get the framerate estimate in game.

* An option take object color into account in materials.
* An option to restrict shadow casters to a lamp's layers.
* Increase from 10 to 18 texture slots for materials, lamps, word.
  An extra texture slot shows up once the last slot is used.

* Memory limit for undo, not enabled by default yet because it
  needs the .B.blend to be changed.
* Multiple undo for image painting.

* An offset for dupligroups, so not all objects in a group have to
  be at the origin.

1 files changed, 96 insertions, 120 deletions

diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_VAOpenGLRasterizer.cpp b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_VAOpenGLRasterizer.cpp
index c78a97ad7be..2cb3b52adfb 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_VAOpenGLRasterizer.cpp
+++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_VAOpenGLRasterizer.cpp
@@ -33,6 +33,7 @@
 #include <stdlib.h>
 
 #include "GL/glew.h"
+#include "GPU_extensions.h"
 
 #include "STR_String.h"
 #include "RAS_TexVert.h"
@@ -77,16 +78,16 @@ void RAS_VAOpenGLRasterizer::SetDrawingMode(int drawingmode)
 	{
 		case KX_BOUNDINGBOX:
 		case KX_WIREFRAME:
-			glDisableClientState(GL_COLOR_ARRAY);
-			glDisable(GL_CULL_FACE);
+			//glDisableClientState(GL_COLOR_ARRAY);
+			//glDisable(GL_CULL_FACE);
 			break;
 		case KX_SOLID:
-			glDisableClientState(GL_COLOR_ARRAY);
+			//glDisableClientState(GL_COLOR_ARRAY);
 			break;
 		case KX_TEXTURED:
 		case KX_SHADED:
 		case KX_SHADOW:
-			glEnableClientState(GL_COLOR_ARRAY);
+			//glEnableClientState(GL_COLOR_ARRAY);
 		default:
 			break;
 	}
@@ -98,141 +99,121 @@ void RAS_VAOpenGLRasterizer::Exit()
 	glEnableClientState(GL_NORMAL_ARRAY);
 	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 	glDisableClientState(GL_COLOR_ARRAY);
-	EnableTextures(false);
 
 	RAS_OpenGLRasterizer::Exit();
 }
 
-void RAS_VAOpenGLRasterizer::IndexPrimitives( const vecVertexArray& vertexarrays,
-							const vecIndexArrays & indexarrays,
-							DrawMode mode,
-							bool useObjectColor,
-							const MT_Vector4& rgbacolor,
-							class KX_ListSlot** slot)
+void RAS_VAOpenGLRasterizer::IndexPrimitives(RAS_MeshSlot& ms)
 {
-	static const GLsizei vtxstride = sizeof(RAS_TexVert);
+	static const GLsizei stride = sizeof(RAS_TexVert);
+	bool wireframe = m_drawingmode <= KX_WIREFRAME;
+	RAS_MeshSlot::iterator it;
 	GLenum drawmode;
-	if(mode == KX_MODE_TRIANGLES)
-		drawmode = GL_TRIANGLES;
-	else if(mode == KX_MODE_QUADS)
-		drawmode = GL_QUADS;
-	else
-		drawmode = GL_LINES;
 
-	const RAS_TexVert* vertexarray;
-	unsigned int numindices, vt;
-
-	if (drawmode != GL_LINES)
-	{
-		if (useObjectColor)
-		{
-			glDisableClientState(GL_COLOR_ARRAY);
-			glColor4d(rgbacolor[0], rgbacolor[1], rgbacolor[2], rgbacolor[3]);
-		} else
-		{
-			glColor4d(0,0,0,1.0);
-			glEnableClientState(GL_COLOR_ARRAY);
-		}
-	}
-	else
-	{
-		glColor3d(0,0,0);
-	}
-
-	EnableTextures(false);
-	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	if(!wireframe)
+		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 
 	// use glDrawElements to draw each vertexarray
-	for (vt=0;vt<vertexarrays.size();vt++)
-	{
-		vertexarray = &((*vertexarrays[vt]) [0]);
-		const KX_IndexArray & indexarray = (*indexarrays[vt]);
-		numindices = indexarray.size();
-
-		if (!numindices)
+	for(ms.begin(it); !ms.end(it); ms.next(it)) {
+		if(it.totindex == 0)
 			continue;
-		
-		glVertexPointer(3,GL_FLOAT,vtxstride,vertexarray->getLocalXYZ());
-		glNormalPointer(GL_FLOAT,vtxstride,vertexarray->getNormal());
-		glTexCoordPointer(2,GL_FLOAT,vtxstride,vertexarray->getUV1());
-		if(glIsEnabled(GL_COLOR_ARRAY))
-			glColorPointer(4,GL_UNSIGNED_BYTE,vtxstride,vertexarray->getRGBA());
 
-		//if(m_Lock)
-		//	local->Begin(vertexarrays[vt]->size());
+		// drawing mode
+		if(it.array->m_type == RAS_DisplayArray::TRIANGLE)
+			drawmode = GL_TRIANGLES;
+		else if(it.array->m_type == RAS_DisplayArray::QUAD)
+			drawmode = GL_QUADS;
+		else
+			drawmode = GL_LINES;
+
+		// colors
+		if (drawmode != GL_LINES && !wireframe) {
+			if (ms.m_bObjectColor) {
+				const MT_Vector4& rgba = ms.m_RGBAcolor;
 
-		// here the actual drawing takes places
-		glDrawElements(drawmode,numindices,GL_UNSIGNED_SHORT,&(indexarray[0]));
+				glDisableClientState(GL_COLOR_ARRAY);
+				glColor4d(rgba[0], rgba[1], rgba[2], rgba[3]);
+			}
+			else {
+				glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
+				glEnableClientState(GL_COLOR_ARRAY);
+			}
+		}
+		else
+			glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
+
+		glVertexPointer(3, GL_FLOAT, stride, it.vertex->getXYZ());
+		glNormalPointer(GL_FLOAT, stride, it.vertex->getNormal());
+		if(!wireframe) {
+			glTexCoordPointer(2, GL_FLOAT, stride, it.vertex->getUV1());
+			if(glIsEnabled(GL_COLOR_ARRAY))
+				glColorPointer(4, GL_UNSIGNED_BYTE, stride, it.vertex->getRGBA());
+		}
 
-		//if(m_Lock)
-		//	local->End();
+		// here the actual drawing takes places
+		glDrawElements(drawmode, it.totindex, GL_UNSIGNED_SHORT, it.index);
 	}
 
-	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	if(!wireframe) {
+		glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+		glDisableClientState(GL_COLOR_ARRAY);
+	}
 }
 
-void RAS_VAOpenGLRasterizer::IndexPrimitivesMulti( const vecVertexArray& vertexarrays,
-							const vecIndexArrays & indexarrays,
-							DrawMode mode,
-							bool useObjectColor,
-							const MT_Vector4& rgbacolor,
-							class KX_ListSlot** slot)
+void RAS_VAOpenGLRasterizer::IndexPrimitivesMulti(RAS_MeshSlot& ms)
 {
-	static const GLsizei vtxstride = sizeof(RAS_TexVert);
-
+	static const GLsizei stride = sizeof(RAS_TexVert);
+	bool wireframe = m_drawingmode <= KX_WIREFRAME;
+	RAS_MeshSlot::iterator it;
 	GLenum drawmode;
-	if(mode == KX_MODE_TRIANGLES)
-		drawmode = GL_TRIANGLES;
-	else if(mode == KX_MODE_QUADS)
-		drawmode = GL_QUADS;
-	else
-		drawmode = GL_LINES;
 
-	const RAS_TexVert* vertexarray;
-	unsigned int numindices, vt;
-
-	if (drawmode != GL_LINES)
-	{
-		if (useObjectColor)
-		{
-			glDisableClientState(GL_COLOR_ARRAY);
-			glColor4d(rgbacolor[0], rgbacolor[1], rgbacolor[2], rgbacolor[3]);
-		}
-		else
-		{
-			glColor4d(0,0,0,1.0);
-			glEnableClientState(GL_COLOR_ARRAY);
-		}
-	}
-	else
-	{
-		glColor3d(0,0,0);
-	}
+	if(!wireframe)
+		EnableTextures(true);
 
 	// use glDrawElements to draw each vertexarray
-	for (vt=0;vt<vertexarrays.size();vt++)
-	{
-		vertexarray = &((*vertexarrays[vt]) [0]);
-		const KX_IndexArray & indexarray = (*indexarrays[vt]);
-		numindices = indexarray.size();
-
-		if (!numindices)
+	for(ms.begin(it); !ms.end(it); ms.next(it)) {
+		if(it.totindex == 0)
 			continue;
 
-		glVertexPointer(3,GL_FLOAT,vtxstride,vertexarray->getLocalXYZ());
-		glNormalPointer(GL_FLOAT,vtxstride,vertexarray->getNormal());
-		TexCoordPtr(vertexarray);
-		if(glIsEnabled(GL_COLOR_ARRAY))
-			glColorPointer(4,GL_UNSIGNED_BYTE,vtxstride,vertexarray->getRGBA());
+		// drawing mode
+		if(it.array->m_type == RAS_DisplayArray::TRIANGLE)
+			drawmode = GL_TRIANGLES;
+		else if(it.array->m_type == RAS_DisplayArray::QUAD)
+			drawmode = GL_QUADS;
+		else
+			drawmode = GL_LINES;
+
+		// colors
+		if (drawmode != GL_LINES && !wireframe) {
+			if (ms.m_bObjectColor) {
+				const MT_Vector4& rgba = ms.m_RGBAcolor;
 
-		//if(m_Lock)
-		//	local->Begin(vertexarrays[vt]->size());
+				glDisableClientState(GL_COLOR_ARRAY);
+				glColor4d(rgba[0], rgba[1], rgba[2], rgba[3]);
+			}
+			else {
+				glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
+				glEnableClientState(GL_COLOR_ARRAY);
+			}
+		}
+		else
+			glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
+
+		glVertexPointer(3, GL_FLOAT, stride, it.vertex->getXYZ());
+		glNormalPointer(GL_FLOAT, stride, it.vertex->getNormal());
+		if(!wireframe) {
+			TexCoordPtr(it.vertex);
+			if(glIsEnabled(GL_COLOR_ARRAY))
+				glColorPointer(4, GL_UNSIGNED_BYTE, stride, it.vertex->getRGBA());
+		}
 
 		// here the actual drawing takes places
-		glDrawElements(drawmode,numindices,GL_UNSIGNED_SHORT,&(indexarray[0]));
-		
-		//if(m_Lock)
-		//	local->End();
+		glDrawElements(drawmode, it.totindex, GL_UNSIGNED_SHORT, it.index);
+	}
+
+	if(!wireframe) {
+		glDisableClientState(GL_COLOR_ARRAY);
+		EnableTextures(false);
 	}
 }
 
@@ -248,7 +229,7 @@ void RAS_VAOpenGLRasterizer::TexCoordPtr(const RAS_TexVert *tv)
 		for(unit=0; unit<m_texco_num; unit++)
 		{
 			glClientActiveTextureARB(GL_TEXTURE0_ARB+unit);
-			if(tv->getFlag() & TV_2NDUV && (int)tv->getUnit() == unit) {
+			if(tv->getFlag() & RAS_TexVert::SECOND_UV && (int)tv->getUnit() == unit) {
 				glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 				glTexCoordPointer(2, GL_FLOAT, sizeof(RAS_TexVert), tv->getUV2());
 				continue;
@@ -257,7 +238,7 @@ void RAS_VAOpenGLRasterizer::TexCoordPtr(const RAS_TexVert *tv)
 			{
 			case RAS_TEXCO_ORCO:
 			case RAS_TEXCO_GLOB:
-				glTexCoordPointer(3, GL_FLOAT, sizeof(RAS_TexVert),tv->getLocalXYZ());
+				glTexCoordPointer(3, GL_FLOAT, sizeof(RAS_TexVert),tv->getXYZ());
 				break;
 			case RAS_TEXCO_UV1:
 				glTexCoordPointer(2, GL_FLOAT, sizeof(RAS_TexVert),tv->getUV1());
@@ -284,7 +265,7 @@ void RAS_VAOpenGLRasterizer::TexCoordPtr(const RAS_TexVert *tv)
 			switch(m_attrib[unit]) {
 			case RAS_TEXCO_ORCO:
 			case RAS_TEXCO_GLOB:
-				glVertexAttribPointerARB(unit, 3, GL_FLOAT, GL_FALSE, sizeof(RAS_TexVert), tv->getLocalXYZ());
+				glVertexAttribPointerARB(unit, 3, GL_FLOAT, GL_FALSE, sizeof(RAS_TexVert), tv->getXYZ());
 				break;
 			case RAS_TEXCO_UV1:
 				glVertexAttribPointerARB(unit, 2, GL_FLOAT, GL_FALSE, sizeof(RAS_TexVert), tv->getUV1());
@@ -313,11 +294,6 @@ void RAS_VAOpenGLRasterizer::EnableTextures(bool enable)
 	TexCoGen *texco, *attrib;
 	int unit, texco_num, attrib_num;
 
-	/* disable previously enabled texture coordinates and attributes. ideally
-	 * this shouldn't be necessary .. */
-	if(enable)
-		EnableTextures(false);
-
 	/* we cache last texcoords and attribs to ensure we disable the ones that
 	 * were actually last set */
 	if(enable) {