SpriteBatch:add will now automatically increase the maximum size of the SpriteBatch if there's no more room.

--HG--
branch : minor

src/modules/graphics/opengl/SpriteBatch.cpp

@@ -66,9 +66,11 @@ SpriteBatch::~SpriteBatch()
 
 int SpriteBatch::add(float x, float y, float a, float sx, float sy, float ox, float oy, float kx, float ky, int index /*= -1*/)
 {
-	// Only do this if there's a free slot.
-	if ((index == -1 && next >= size) || index < -1 || index >= size)
-		return -1;
+	if (index < -1 || index >= size)
+		throw love::Exception("Invalid sprite index: %d", index + 1);
+
+	if (index == -1 && next >= size)
+		setBufferSize(size * 2);
 
 	Matrix3 t(x, y, a, sx, sy, ox, oy, kx, ky);
 
@@ -83,9 +85,11 @@ int SpriteBatch::add(float x, float y, float a, float sx, float sy, float ox, fl
 
 int SpriteBatch::addq(Quad *quad, float x, float y, float a, float sx, float sy, float ox, float oy, float kx, float ky, int index /*= -1*/)
 {
-	// Only do this if there's a free slot.
-	if ((index == -1 && next >= size) || index < -1 || index >= next)
-		return -1;
+	if (index < -1 || index >= size)
+		throw love::Exception("Invalid sprite index: %d", index + 1);
+
+	if (index == -1 && next >= size)
+		setBufferSize(size * 2);
 
 	Matrix3 t(x, y, a, sx, sy, ox, oy, kx, ky);
 
@@ -198,8 +202,8 @@ void SpriteBatch::attachAttribute(const std::string &name, Mesh *mesh)
 	AttachedAttribute oldattrib = {};
 	AttachedAttribute newattrib = {};
 
-	if (mesh->getVertexCount() < (size_t) getBufferSize() * 4)
-		throw love::Exception("Mesh has too few vertices to be attached to this SpriteBatch (at least %d vertices are required)", getBufferSize()*4);
+	if (mesh->getVertexCount() < (size_t) next * 4)
+		throw love::Exception("Mesh has too few vertices to be attached to this SpriteBatch (at least %d vertices are required)", next*4);
 
 	auto it = attached_attributes.find(name);
 	if (it != attached_attributes.end())
@@ -256,9 +260,9 @@ void SpriteBatch::draw(float x, float y, float angle, float sx, float sy, float
 	{
 		Mesh *mesh = it.second.mesh.get();
 
-		// We have to do this check here as well because setBufferSize can be
+		// We have to do this check here as wll because setBufferSize can be
 		// called after attachAttribute.
-		if (mesh->getVertexCount() < (size_t) getBufferSize() * 4)
+		if (mesh->getVertexCount() < (size_t) next * 4)
 			throw love::Exception("Mesh with attribute '%s' attached to this SpriteBatch has too few vertices", it.first.c_str());
 
 		int location = mesh->bindAttributeToShaderInput(it.second.index, it.first);

src/modules/graphics/opengl/SpriteBatch.h

@@ -91,13 +91,7 @@ public:
 	int getCount() const;
 
 	/**
-	 * Sets the total number of sprites this SpriteBatch can hold.
-	 * Leaves existing sprite data intact when possible.
-	 **/
-	void setBufferSize(int newsize);
-
-	/**
-	 * Get the total number of sprites this SpriteBatch can hold.
+	 * Get the total number of sprites this SpriteBatch can currently hold.
 	 **/
 	int getBufferSize() const;
 
@@ -118,6 +112,12 @@ private:
 		int index;
 	};
 
+	/**
+	 * Sets the total number of sprites this SpriteBatch can hold.
+	 * Leaves existing sprite data intact when possible.
+	 **/
+	void setBufferSize(int newsize);
+
 	void addv(const Vertex *v, const Matrix3 &m, int index);
 
 	/**

src/modules/graphics/opengl/wrap_SpriteBatch.cpp

@@ -188,14 +188,6 @@ int w_SpriteBatch_getCount(lua_State *L)
 	return 1;
 }
 
-int w_SpriteBatch_setBufferSize(lua_State *L)
-{
-	SpriteBatch *t = luax_checkspritebatch(L, 1);
-	int size = (int) luaL_checknumber(L, 2);
-	luax_catchexcept(L, [&]() {t->setBufferSize(size); });
-	return 0;
-}
-
 int w_SpriteBatch_getBufferSize(lua_State *L)
 {
 	SpriteBatch *t = luax_checkspritebatch(L, 1);
@@ -224,7 +216,6 @@ static const luaL_Reg w_SpriteBatch_functions[] =
 	{ "setColor", w_SpriteBatch_setColor },
 	{ "getColor", w_SpriteBatch_getColor },
 	{ "getCount", w_SpriteBatch_getCount },
-	{ "setBufferSize", w_SpriteBatch_setBufferSize },
 	{ "getBufferSize", w_SpriteBatch_getBufferSize },
 	{ "attachAttribute", w_SpriteBatch_attachAttribute },
 	{ 0, 0 }