more drafting for tile redering optimization

This is the last commit before the old Element class gets ripped

Aquaria/Element.cpp

@@ -133,11 +133,11 @@ void Element::updateEffects(float dt)
 						weight = 1.0f-weight;
 					if (weight < 0.125f)
 						weight *= 0.5f;
-					eff->wavy[i].x = sinf(eff->wavyAngleOffset + (float(i)/wavySz)*PI)*float(eff->wavyMagnitude*eff->effectMult)*weight;
+					eff->wavy[i] = sinf(eff->wavyAngleOffset + (float(i)/wavySz)*PI)*float(eff->wavyMagnitude*eff->effectMult)*weight;
 					if (!eff->wavySave.empty())
 					{
 						if (eff->wavyLerpIn < 1)
-							eff->wavy[i].x = eff->wavy[i].x*eff->wavyLerpIn + (eff->wavySave[i].x*(1.0f-eff->wavyLerpIn));
+							eff->wavy[i] = eff->wavy[i]*eff->wavyLerpIn + (eff->wavySave[i]*(1.0f-eff->wavyLerpIn));
 					}
 				}
 
@@ -237,12 +237,8 @@ void Element::setElementEffectByIndex(int eidx)
 	case EFX_WAVY:
 	{
 
-		eff->wavy.resize(e.segsy);
+		eff->wavy.resize(e.segsy, 0.0f);
 		float bity = float(getHeight())/float(e.segsy);
-		for (size_t i = 0; i < eff->wavy.size(); i++)
-		{
-			eff->wavy[i] = Vector(0, -(i*bity));
-		}
 		eff->wavyFlip = e.wavy_flip;
 		eff->wavyMin = bity;
 		eff->wavyMax = bity*1.2f;

Aquaria/Element.h

@@ -25,6 +25,14 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 class Entity;
 
+enum EFXType
+{
+	EFX_NONE	=-1,
+	EFX_SEGS	=0,
+	EFX_ALPHA	,
+	EFX_WAVY	,
+	EFX_MAX
+};
 
 enum ElementFlag
 {
@@ -52,7 +60,7 @@ struct ElementEffectData
 	float hitPerc, effectMult;
 	bool wavyWaving, wavyFlip, touching;
 	Vector touchVel;
-	std::vector<Vector> wavy, wavySave;
+	std::vector<float> wavy, wavySave;
 	int elementEffectIndex; // used by editor only
 };
 

Aquaria/GameEnums.h

@@ -202,15 +202,6 @@ enum FormUpgradeType
 	FORMUPGRADE_MAX
 };
 
-enum EFXType
-{
-	EFX_NONE	=-1,
-	EFX_SEGS	=0,
-	EFX_ALPHA	,
-	EFX_WAVY	,
-	EFX_MAX
-};
-
 enum EmoteType
 {
 	EMOTE_NAIJAEVILLAUGH	= 0,

BBGE/RenderGrid.cpp

@@ -154,7 +154,7 @@ void RenderGrid::setStripPoints(bool vert, const Vector* points, size_t n)
 	}
 }
 
-void RenderGrid::setFromWavy(const Vector* wavy, size_t len, float width)
+void RenderGrid::setFromWavy(const float* wavy, size_t len, float width)
 {
 	const size_t NX = grid.width() - 1;
 	const size_t H = grid.height();
@@ -165,7 +165,7 @@ void RenderGrid::setFromWavy(const Vector* wavy, size_t len, float width)
 		const size_t wavy_y = (H - y)-1;
 		if (wavy_y < len)
 		{
-			const float tmp = wavy[wavy_y].x * iw;
+			const float tmp = wavy[wavy_y] * iw;
 			Vector * const row = grid.row(y);
 			for (size_t x = 0; x < NX; x++)
 			{

BBGE/RenderGrid.h

@@ -38,7 +38,7 @@ public:
 	void setAlpha(size_t x, size_t y, float a);
 	void setSegs(float dgox, float dgoy, float dgmx, float dgmy, float dgtm, bool dgo);
 	void setStripPoints(bool vert, const Vector *points, size_t n);
-	void setFromWavy(const Vector *wavy, size_t len, float width);
+	void setFromWavy(const float *wavy, size_t len, float width);
 
 	size_t width() const { return grid.width(); }
 	size_t height() const { return grid.height(); }

BBGE/RenderObject.h

@@ -32,6 +32,7 @@ class Core;
 class StateData;
 class Texture;
 
+// TODO: move all the other bools from RenderObject here
 enum RenderObjectFlags
 {
 	RO_CLEAR			= 0x00,

BBGE/Tile.cpp

@@ -1,2 +1,356 @@
 #include "Tile.h"
+#include "RenderGrid.h"
+#include "Tileset.h"
+#include "Base.h"
 
+TileStorage::TileStorage(const TileEffectStorage& eff)
+	: effstore(eff)
+{
+}
+
+TileStorage::~TileStorage()
+{
+	destroyAll();
+}
+
+void TileStorage::moveToFront(size_t idx)
+{
+	_moveToFront(idx);
+	refreshAll();
+}
+
+void TileStorage::moveToBack(size_t idx)
+{
+	_moveToBack(idx);
+	refreshAll();
+}
+
+void TileStorage::update(float dt)
+{
+	for(size_t i = 0; i < indicesToUpdate.size(); ++i)
+	{
+		TileData& t = tiles[indicesToUpdate[i]];
+		assert(t.flags & TILEFLAG_OWN_EFFDATA); // known to be set if this ends up on the list
+		t.eff->update(dt, &t);
+	}
+}
+
+void TileStorage::doInteraction(const Vector& pos, const Vector& vel, float mult, float touchWidth)
+{
+	for(size_t i = 0; i < indicesToCollide.size(); ++i)
+	{
+		TileData& t = tiles[indicesToCollide[i]];
+		t.eff->doInteraction(t, pos, vel, mult, touchWidth);
+	}
+}
+
+void TileStorage::_moveToFront(size_t idx)
+{
+	// move tile to front -> move it to the back of the list, to be rendered last aka on top of everything else
+	TileData tile = tiles[idx];
+	tiles.erase(tiles.begin() + idx);
+	tiles.push_back(tile);
+}
+
+void TileStorage::_moveToBack(size_t idx)
+{
+	// move tile to back -> move it to the front of the list, to be rendered first aka underneath everything else
+	TileData tile = tiles[idx];
+	tiles.erase(tiles.begin() + idx);
+	tiles.insert(tiles.begin(), tile);
+}
+
+void TileStorage::moveToOther(TileStorage& other, const size_t *indices, size_t n)
+{
+	for(size_t i = 0; i < n; ++i)
+		other.tiles.push_back(tiles[indices[i]]);
+
+	std::vector<TileData> tmp;
+	tmp.swap(tiles);
+	tiles.reserve(tmp.size() - n);
+	for(size_t i = 0; i < tmp.size(); ++i)
+	{
+		for(size_t k = 0; k < n; ++i) // not particularly efficient, could be much better by sorting first but eh
+			if(indices[k] == i)
+				goto skip;
+
+		tiles.push_back(tmp[i]);
+
+		skip: ;
+	}
+
+	refreshAll();
+	other.refreshAll();
+}
+
+static void dropAttachments(TileData& t)
+{
+	if(t.flags & TILEFLAG_OWN_EFFDATA)
+	{
+		delete t.eff;
+		t.flags &= ~TILEFLAG_OWN_EFFDATA;
+	}
+	t.eff = NULL;
+}
+
+void TileStorage::deleteSome(const size_t* indices, size_t n)
+{
+	std::vector<TileData> tmp;
+	tmp.swap(tiles);
+	tiles.reserve(tmp.size() - n);
+
+	for(size_t i = 0; i < tmp.size(); ++i)
+	{
+		for(size_t k = 0; k < n; ++i) // not particularly efficient, could be much better by sorting first but eh
+			if(indices[k] == i)
+			{
+				dropAttachments(tmp[i]);
+				goto skip;
+			}
+
+		tiles.push_back(tmp[i]);
+
+		skip: ;
+	}
+
+	refreshAll();
+}
+
+void TileStorage::destroyAll()
+{
+	const size_t n = tiles.size();
+	for(size_t i = 0; i < n; ++i)
+		dropAttachments(tiles[i]);
+	tiles.clear();
+	indicesToCollide.clear();
+	indicesToUpdate.clear();
+}
+
+void TileStorage::setTag(unsigned tag, const size_t* indices, size_t n)
+{
+	for(size_t i = 0; i < n; ++i)
+		tiles[indices[i]].tag = tag;
+	// don't need to refresh here
+}
+
+void TileStorage::setEffect(int idx, const size_t* indices, size_t n)
+{
+	for(size_t i = 0; i < n; ++i)
+		effstore.assignEffect(tiles[indices[i]], idx);
+	refreshAll();
+}
+
+void TileStorage::refreshAll()
+{
+	indicesToCollide.clear();
+	indicesToUpdate.clear();
+
+	const size_t n = tiles.size();
+	for(size_t i = 0; i < n; ++i)
+	{
+		const TileData& t = tiles[i];
+		if(const TileEffectData *e = t.eff)
+		{
+			if(t.flags & TILEFLAG_OWN_EFFDATA)
+			{
+				indicesToUpdate.push_back(i);
+				if(e->efxtype == EFX_WAVY)
+					indicesToCollide.push_back(i);
+			}
+		}
+	}
+}
+
+void TileStorage::clearSelection()
+{
+	const size_t n = tiles.size();
+	for(size_t i = 0; i < n; ++i)
+		tiles[i].flags &= ~TILEFLAG_SELECTED;
+}
+
+TileEffectData::TileEffectData(const TileEffectConfig& cfg)
+	: efxtype(cfg.type), efxidx(cfg.index)
+	, grid(NULL), blend(BLEND_DEFAULT)
+{
+	switch(cfg.type)
+	{
+		case EFX_WAVY:
+		{
+			float bity = 20; // FIXME
+			wavy.wavy.resize(cfg.u.wavy.segsy, 0.0f);
+			wavy.flip = cfg.u.wavy.flip;
+			wavy.min = bity;
+			wavy.max = bity*1.2f;
+
+			RenderGrid *g = new RenderGrid(2, cfg.u.wavy.segsy);
+			grid = g;
+			g->gridType = GRID_UNDEFINED; // by default it's GRID_WAVY, but that would reset during update
+
+			wavy.angleOffset = 0;
+			wavy.magnitude = 0;
+			wavy.lerpIn = 0;
+			wavy.hitPerc = 0;
+			wavy.effectMult = 0;
+			wavy.waving = false;
+			wavy.flip = false;
+			wavy.touching = false;
+		}
+		break;
+
+		case EFX_SEGS:
+		{
+			RenderGrid *g = new RenderGrid(cfg.u.segs.x, cfg.u.segs.y);
+			grid = g;
+			g->setSegs(cfg.u.segs.dgox, cfg.u.segs.dgoy, cfg.u.segs.dgmx, cfg.u.segs.dgmy, cfg.u.segs.dgtm, cfg.u.segs.dgo);
+		}
+		break;
+
+		case EFX_ALPHA:
+		{
+			alpha.x = cfg.u.alpha.val0;
+			alpha.interpolateTo(cfg.u.alpha.val1, cfg.u.alpha.time, -1, cfg.u.alpha.pingpong, cfg.u.alpha.ease);
+			blend = cfg.u.alpha.blend;
+		}
+		break;
+	}
+}
+
+TileEffectData::~TileEffectData()
+{
+	delete grid;
+}
+
+void TileEffectData::Wavy::update(float dt)
+{
+	if (touching)
+	{
+		touching = false;
+		float ramp = touchVel.getLength2D()/800.0f;
+		if (ramp < 0)	ramp = 0;
+		if (ramp > 1)	ramp = 1;
+
+		magnitude = 100 * ramp + 16;
+
+		if (touchVel.x < 0)
+			magnitude = -magnitude;
+
+		angleOffset = (hitPerc-0.5f)*PI;
+
+		wavySave = wavy;
+		lerpIn = 0;
+	}
+
+	if (waving)
+	{
+		// TODO: set waving=false if magnitude==0 ?
+		float spd = PI*1.1f;
+		float magRedSpd = 48;
+		float lerpSpd = 5.0;
+		float wavySz = float(wavy.size());
+		for (size_t i = 0; i < wavy.size(); i++)
+		{
+			float weight = float(i)/wavySz;
+			if (flip)
+				weight = 1.0f-weight;
+			if (weight < 0.125f)
+				weight *= 0.5f;
+			wavy[i] = sinf(angleOffset + (float(i)/wavySz)*PI)*(magnitude*effectMult)*weight;
+			if (!wavySave.empty())
+			{
+				if (lerpIn < 1)
+					wavy[i] = wavy[i] * lerpIn + (wavySave[i] * (1.0f-lerpIn));
+			}
+		}
+
+		if (lerpIn < 1)
+		{
+			lerpIn += dt*lerpSpd;
+			if (lerpIn > 1)
+				lerpIn = 1;
+		}
+		angleOffset += dt*spd;
+		if (magnitude > 0)
+		{
+			magnitude -= magRedSpd*dt;
+			if (magnitude < 0)
+				magnitude = 0;
+		}
+		else
+		{
+			magnitude += magRedSpd*dt;
+			if (magnitude > 0)
+				magnitude = 0;
+		}
+	}
+}
+
+void TileEffectData::update(float dt, const TileData *t)
+{
+	switch(efxtype)
+	{
+		case EFX_WAVY:
+			wavy.update(dt);
+			if(const size_t N = wavy.wavy.size())
+				grid->setFromWavy(&wavy.wavy[0], N, t->et->w);
+		break;
+
+		case EFX_SEGS:
+			grid->update(dt);
+		break;
+
+		case EFX_ALPHA:
+			alpha.update(dt);
+		break;
+	}
+}
+
+void TileEffectData::doInteraction(const TileData& t, const Vector& pos, const Vector& vel, float mult, float touchWidth)
+{
+	assert(efxtype == EFX_WAVY);
+
+	const Vector tp(t.x, t.y);
+
+	if (pos.x > tp.x-touchWidth && pos.x < tp.x+touchWidth)
+	{
+		float h = t.et->h*t.scaley;
+		float h2 = h * 0.5f;
+		if (pos.y < tp.y+h2 && pos.y > tp.y-h2)
+		{
+			wavy.touching = true;
+			wavy.waving = true;
+			float hitPerc = tp.y - h2 - pos.y;
+			hitPerc /= h;
+			hitPerc = (1.0f-hitPerc)-1.0f;
+			wavy.hitPerc = hitPerc;
+			wavy.touchVel = vel;
+			wavy.effectMult = mult;
+		}
+	}
+}
+
+void TileEffectStorage::assignEffect(TileData& t, int index) const
+{
+	dropAttachments(t);
+
+	if(index < 0)
+		return;
+
+	size_t idx = size_t(index);
+
+	if(idx < prepared.size() && prepared[idx])
+	{
+		t.eff = prepared[idx];
+	}
+	else if(idx < configs.size())
+	{
+		t.eff = new TileEffectData(configs[idx]);
+		t.flags |= TILEFLAG_OWN_EFFDATA;
+	}
+}
+
+void TileEffectStorage::update(float dt)
+{
+	for(size_t i = 0; i < prepared.size(); ++i)
+		if(TileEffectData *eff = prepared[i])
+			eff->update(dt, NULL);
+}

BBGE/Tile.h

@@ -3,9 +3,7 @@
 
 #include <vector>
 #include "Vector.h"
-
+#include "EngineEnums.h"
-class ElementTemplate;
-class Texture;
 
 // A Tile is a very stripped down RenderObject that bypasses the default
 // rendering pipeline for efficiency reasons.
@@ -23,8 +21,61 @@ class Texture;
 - Does not have offset, internalOffset, gravity, etc etc that RenderObject has
 - Parallax scroll factor is solely influenced by layer, not individually
 - RGB is never tinted, alpha may come from efx
+
+Further observations:
+- Aside from EFX_WAVY, all tiles with the same effect index can share a global modulator,
+  ie. the alpha value is the same per-tile unless the tile is spawned when the map is in progress.
+  And on map reload everything is back to the same value for each tile with the same effect and params.
+  So we can totally exclude the editor.
+
+Gotaches:
+- Keeping a pointer to a TileData is not safe.
 */
 
+class ElementTemplate;
+class Texture;
+class RenderGrid;
+class TileRender;
+
+enum EFXType
+{
+	EFX_SEGS,
+	EFX_ALPHA,
+	EFX_WAVY
+};
+
+// static configuration for one effect type
+struct TileEffectConfig
+{
+public:
+	EFXType type;
+	unsigned index;
+
+	union
+	{
+		struct
+		{
+			int x, y;
+			float dgox, dgoy, dgmx, dgmy, dgtm;
+			bool dgo;
+		} segs;
+
+		struct
+		{
+			float radius, min, max;
+			int segsy;
+			bool flip;
+		} wavy;
+
+		struct
+		{
+			float val0, val1, time;
+			bool pingpong, ease;
+			BlendType blend;
+		} alpha;
+	} u;
+};
+
 enum TileFlags
 {
 	TILEFLAG_NONE        = 0,
@@ -34,25 +85,95 @@ enum TileFlags
 	TILEFLAG_SOLID_IN    = 0x08, // instead of OT_INVISIBLE, generate OT_INVISIBLEIN
 	TILEFLAG_HURT        = 0x10, // always generate OT_HURT
 	TILEFLAG_FH          = 0x20, // flipped horizontally
+	TILEFLAG_OWN_EFFDATA = 0x40, // tile owns its TileEffectData, can modify & must delete
+	TILEFLAG_HIDDEN      = 0x80, // don't render tile
+	TILEFLAG_SELECTED    = 0x100
 };
 
-// sort-of-POD
+struct TileData;
+
+struct TileEffectData
+{
+	TileEffectData(const TileEffectConfig& cfg);
+	~TileEffectData();
+	void update(float dt, const TileData *t); // optional t needed for EFX_WAVY
+	void doInteraction(const TileData& t, const Vector& pos, const Vector& vel, float mult, float touchWidth);
+
+	const EFXType efxtype;
+	const unsigned efxidx; // index to ElementEffect
+	RenderGrid *grid;
+	InterpolatedVector alpha;
+	BlendType blend;
+
+	struct Wavy
+	{
+		std::vector<float> wavy, wavySave;
+		Vector touchVel;
+		float angleOffset, magnitude, lerpIn;
+		float min, max;
+		float hitPerc, effectMult;
+		bool waving, flip, touching;
+		void update(float dt);
+	};
+	Wavy wavy;
+};
+
+// POD and as compact as possible
+// the idea is that these are linearly adjacent in memory in the order they are rendered,
+// to maximize cache & prefetch efficiency
 struct TileData
 {
 	float x, y, rotation, texscale;
-    Vector scale, beforeScaleOffset;
+	float scalex, scaley;
-    int efx;
+	float beforeScaleOffsetX, beforeScaleOffsetY;
 	unsigned flags; // TileFlags
 	unsigned tag;
-    ElementTemplate *et;
+	ElementTemplate *et; // texture, texcoords, etc is here
+	TileEffectData *eff;
 };
 
+class TileEffectStorage
+{
+public:
+	void assignEffect(TileData& t, int index) const;
+	void update(float dt);
+
+	std::vector<TileEffectData*> prepared;
+	std::vector<TileEffectConfig> configs;
+};
 
 class TileStorage
 {
+	friend class TileRender;
 public:
+	TileStorage(const TileEffectStorage& eff);
+	~TileStorage();
+
+	void moveToFront(size_t idx);
+	void moveToBack(size_t idx);
+	void moveToOther(TileStorage& other, const size_t *indices, size_t n);
+	void deleteSome(const size_t *indices, size_t n);
+
+	void setTag(unsigned tag, const size_t *indices, size_t n);
+	void setEffect(int idx, const size_t *indices, size_t n);
+
+	void update(float dt);
+	void doInteraction(const Vector& pos, const Vector& vel, float mult, float touchWidth);
+	void refreshAll(); // call this after changing properties or moving to front/back
+	void destroyAll();
+
+	void clearSelection();
+
+private:
+
 	std::vector<TileData> tiles;
-    void refresh(); // call when adding/removing/reordering tiles or changing efx
+	std::vector<size_t> indicesToUpdate;
+	std::vector<size_t> indicesToCollide;
+	const TileEffectStorage& effstore;
+
+	void _refreshTile(const TileData& t);
+	void _moveToFront(size_t idx);
+	void _moveToBack(size_t idx);
 };
 
 

BBGE/TileRender.cpp

@@ -2,9 +2,12 @@
 #include "RenderBase.h"
 #include "Core.h"
 #include "Tileset.h"
+#include "RenderGrid.h"
+#include "RenderObject.h"
+
 
 TileRender::TileRender(const TileStorage& tiles)
-	: storage(tiles)
+	: storage(tiles), renderBorders(false)
 {
 }
 
@@ -12,11 +15,36 @@ TileRender::~TileRender()
 {
 }
 
+// shamelessly ripped from paint.net default palette
+static const Vector s_tagColors[] =
+{
+	/* 0 */ Vector(0.5f, 0.5f, 0.5f),
+	/* 1 */ Vector(1,0,0),
+	/* 2 */ Vector(1, 0.415686f, 0),
+	/* 3 */ Vector(1,0.847059f, 0),
+	/* 4 */ Vector(0.298039f,1,0),
+	/* 5 */ Vector(0,1,1),
+	/* 6 */ Vector(0,0.580392,1),
+	/* 7 */ Vector(0,0.149020f,1),
+	/* 8 */ Vector(0.282353f,0,1),
+	/* 9 */ Vector(0.698039f,0,1),
+
+	/* 10 */ Vector(1,0,1), // anything outside of the pretty range
+};
+
+static inline const Vector& getTagColor(int tag)
+{
+	const unsigned idx = std::min<unsigned>(unsigned(tag), Countof(s_tagColors)-1);
+	return s_tagColors[idx];
+
+}
+
+
 void TileRender::onRender(const RenderState& rs) const
 {
 	// prepare. get parallax scroll factors
 	const RenderObjectLayer& rl = core->renderObjectLayers[this->layer];
-	Vector M = rl.followCameraMult; // affected by parallaxLock
+	const Vector M = rl.followCameraMult; // affected by parallaxLock
 	const float F = rl.followCamera;
 
 	// Formula from RenderObject::getFollowCameraPosition() and optimized for speed
@@ -26,18 +54,20 @@ void TileRender::onRender(const RenderState& rs) const
 
 	unsigned lastTexRepeat = false;
 	unsigned lastTexId = 0;
-	BlendType blend = BLEND_DEFAULT; // TODO: influenced by efx
+
-	const bool renderBorders = true; // TODO: when layer selected in editor
+	const bool renderBorders = this->renderBorders;
+	//bool mustSetColor = false;
 
 	for(size_t i = 0; i < storage.tiles.size(); ++i)
 	{
 		const TileData& tile = storage.tiles[i];
+		if(tile.flags & TILEFLAG_HIDDEN)
+			continue;
+
 		const Vector tilepos(tile.x, tile.y);
 		const Vector tmp = T + (F * tilepos);
 		const Vector pos = tilepos * M1 + (tmp * M); // lerp, used to select whether to use original v or parallax-corrected v
 
-		rs.gpu.setBlend(blend);
-
 		ElementTemplate * const et = tile.et;
 		if(Texture * const tex = et->tex.content())
 		{
@@ -51,35 +81,48 @@ void TileRender::onRender(const RenderState& rs) const
 			}
 		}
 		else
+		{
+			lastTexId = 0;
 			glBindTexture(GL_TEXTURE_2D, 0); // unlikely
+		}
 
 		glPushMatrix();
 		glTranslatef(pos.x, pos.y, pos.z);
 
 		glRotatef(tile.rotation, 0, 0, 1);
-		if(tile.flags & TILEFLAG_FH)
+		if(tile.flags & TILEFLAG_FH) // TODO: This is not necessary! Since we have no children, flipped texcoords are fine
 			glRotatef(180, 0, 1, 0);
 
 		// this is only relevant in editor mode and is always 0 otherwise
-		glTranslatef(tile.beforeScaleOffset.x, tile.beforeScaleOffset.y, tile.beforeScaleOffset.z);
+		glTranslatef(tile.beforeScaleOffsetX, tile.beforeScaleOffsetY, 0);
 
-		glScalef(tile.scale.x, tile.scale.y, 1);
+		glScalef(tile.scalex * et->w, tile.scaley * et->h, 1);
+		//glScalef(tile.scalex * et->w, tile.scaley * et->h, 1); // TODO use this + fixed verts
 
-		// TODO: only need to do this when prev. tile had different alpha
+		BlendType blend = BLEND_DEFAULT;
+		float alpha = rs.alpha;
+		RenderGrid *grid = NULL;
+		const TileEffectData * const eff = tile.eff;
+		if(eff)
 		{
-			const float alpha = 1; // TODO: via efx
+			grid = eff->grid;
-			Vector col = rs.color;
+			alpha *= eff->alpha.x;
-			glColor4f(col.x, col.y, col.z, rs.alpha*alpha);
+			blend = eff->blend;
 		}
 
-		const float _w2 = float(int(et->w)) * 0.5f;
+		rs.gpu.setBlend(blend);
-		const float _h2 = float(int(et->h)) * 0.5f;
+
+		// TODO: only need to do this when prev. tile had different alpha
+		glColor4f(rs.color.x, rs.color.y, rs.color.z, alpha);
 
-		// render texture
-		{
 		const Vector upperLeftTextureCoordinates(et->tu1, et->tv1);
 		const Vector lowerRightTextureCoordinates(et->tu2, et->tv2);
 
+		if(!grid)
+		{
+			const float _w2 = et->w * 0.5f;
+			const float _h2 = et->h * 0.5f;
+
 			glBegin(GL_QUADS);
 			{
 				glTexCoord2f(upperLeftTextureCoordinates.x, 1.0f-upperLeftTextureCoordinates.y);
@@ -96,14 +139,29 @@ void TileRender::onRender(const RenderState& rs) const
 			}
 			glEnd();
 		}
+		else
+		{
+			RenderState rx(rs);
+			rx.alpha = alpha;
+			grid->render(rx, upperLeftTextureCoordinates, lowerRightTextureCoordinates);
+			if (RenderObject::renderCollisionShape)
+			{
+				glBindTexture(GL_TEXTURE_2D, 0);
+				grid->renderDebugPoints(rs);
+				lastTexId = 0;
+			}
+		}
 
 		if(renderBorders)
 		{
 			lastTexId = 0;
 			glBindTexture(GL_TEXTURE_2D, 0);
 
-			Vector color(0.5f,0.5f,0.5f); // TODO: (1,1,1) when selected
+			float c = (tile.flags & TILEFLAG_SELECTED) ? 1.0f : 0.5f;
-
+			Vector color(c,c,c);
+			color *= getTagColor(tile.tag);
+			const float _w2 = et->w * 0.5f;
+			const float _h2 = et->h * 0.5f;
 
 			glColor4f(color.x, color.y, color.z, 1.0f);
 			glPointSize(16);
@@ -129,7 +187,3 @@ void TileRender::onRender(const RenderState& rs) const
 	RenderObject::lastTextureApplied = lastTexId;
 	RenderObject::lastTextureRepeat = !!lastTexRepeat;
 }
-
-void TileRender::onUpdate(float dt)
-{
-}

BBGE/TileRender.h

@@ -15,7 +15,8 @@ public:
 	TileRender(const TileStorage& tiles);
 	virtual ~TileRender();
 	virtual void onRender(const RenderState& rs) const;
-	virtual void onUpdate(float dt);
+
+	bool renderBorders;
 
 private:
 };

BBGE/Tileset.h

@@ -15,7 +15,7 @@ public:
 
 	// lazily assigned when tex is loaded
 	CountedPtr<Texture> tex;
-	unsigned w,h; // custom size if used, otherwise texture size
+	float w,h; // custom size if used, otherwise texture size
 
 	// fixed
 	float tu1, tu2, tv1, tv2; // texcoords