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some fixes and facilities for saving the fog of war to disk

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This commit is contained in:
scrawl 2012-03-14 20:44:06 +01:00
parent 5a46d58da5
commit 2edd7e59f4
5 changed files with 118 additions and 55 deletions
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148
apps/openmw/mwrender/localmap.cpp
View file

@ -4,14 +4,10 @@
#include <OgreOverlayManager.h>
#include <OgreMaterialManager.h>
#include <boost/filesystem.hpp>
using namespace MWRender;
using namespace Ogre;
#define CACHE_EXTENSION ".jpg"
#define MAP_RESOLUTION 1024 // 1024*1024 pixels for a 8192*8192 area in world units
#define MAP_RESOLUTION 1024 // 1024*1024 pixels for a SIZE*SIZE area in world units
// warning: don't set this too high! dynamic textures are a bottleneck
#define FOGOFWAR_RESOLUTION 32
@ -20,6 +16,9 @@ using namespace Ogre;
// example: at 60 fps, a value of 2 would mean to render it at 20 fps.
#define FOGOFWAR_SKIP 2
// size of a map segment (for exterior regions, this equals 1 cell)
#define SIZE 8192.f
LocalMap::LocalMap(OEngine::Render::OgreRenderer* rend)
{
mRendering = rend;
@ -32,16 +31,16 @@ LocalMap::LocalMap(OEngine::Render::OgreRenderer* rend)
// Debug overlay to view the maps
render(0, 0, 10000, 10000, 8192, 8192, "Cell_0_0");
render(0, 0, 10000, 10000, SIZE, SIZE, "Cell_0_0_");
MaterialPtr mat = MaterialManager::getSingleton().create("testMaterial", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
mat->getTechnique(0)->getPass(0)->createTextureUnitState("Cell_0_0");
mat->getTechnique(0)->getPass(0)->createTextureUnitState("Cell_0_0_");
mat->getTechnique(0)->getPass(0)->setDepthWriteEnabled(false);
mat->getTechnique(0)->getPass(0)->setSceneBlending(SBT_TRANSPARENT_ALPHA);
mat->getTechnique(0)->getPass(0)->setDepthCheckEnabled(false);
mat = MaterialManager::getSingleton().create("testMaterial2", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
mat->getTechnique(0)->getPass(0)->createTextureUnitState("Cell_0_0");
mat->getTechnique(0)->getPass(0)->createTextureUnitState("Cell_0_0_");
mat->getTechnique(0)->getPass(0)->setDepthWriteEnabled(false);
mat->getTechnique(0)->getPass(0)->setSceneBlending(SBT_TRANSPARENT_ALPHA);
mat->getTechnique(0)->getPass(0)->setDepthCheckEnabled(false);
@ -92,26 +91,75 @@ void LocalMap::deleteBuffers()
mBuffers.clear();
}
void LocalMap::saveTexture(const std::string& texname, const std::string& filename)
{
TexturePtr tex = TextureManager::getSingleton().getByName(texname);
if (tex.isNull()) return;
HardwarePixelBufferSharedPtr readbuffer = tex->getBuffer();
readbuffer->lock(HardwareBuffer::HBL_NORMAL );
const PixelBox &readrefpb = readbuffer->getCurrentLock();
uchar *readrefdata = static_cast<uchar*>(readrefpb.data);
Image img;
img = img.loadDynamicImage (readrefdata, tex->getWidth(),
tex->getHeight(), tex->getFormat());
img.save("./" + filename);
readbuffer->unlock();
}
std::string LocalMap::coordStr(const int x, const int y)
{
return StringConverter::toString(x) + "_" + StringConverter::toString(y);
}
void LocalMap::saveFogOfWar(MWWorld::Ptr::CellStore* cell)
{
if (!mInterior)
{
/*saveTexture("Cell_"+coordStr(mCellX, mCellY)+"_fog",
"Cell_"+coordStr(mCellX, mCellY)+"_fog.png");*/
}
else
{
Vector2 min(mBounds.getMinimum().x, mBounds.getMinimum().z);
Vector2 max(mBounds.getMaximum().x, mBounds.getMaximum().z);
/// \todo why is this workaround needed?
min *= 1.3;
max *= 1.3;
Vector2 length = max-min;
// divide into segments
const int segsX = std::ceil( length.x / SIZE );
const int segsY = std::ceil( length.y / SIZE );
for (int x=0; x<segsX; ++x)
{
for (int y=0; y<segsY; ++y)
{
/*saveTexture(
mInteriorName + "_" + coordStr(x,y) + "_fog",
mInteriorName + "_" + coordStr(x,y) + "_fog.png");*/
}
}
}
}
void LocalMap::requestMap(MWWorld::Ptr::CellStore* cell)
{
deleteBuffers();
mInterior = false;
std::string name = "Cell_" + StringConverter::toString(cell->cell->data.gridX)
+ "_" + StringConverter::toString(cell->cell->data.gridY);
std::string name = "Cell_"+coordStr(cell->cell->data.gridX, cell->cell->data.gridY);
const int x = cell->cell->data.gridX;
const int y = cell->cell->data.gridY;
int x = cell->cell->data.gridX;
int y = cell->cell->data.gridY;
render((x+0.5)*8192, (-y-0.5)*8192, -10000, 10000, 8192, 8192, name);
render((x+0.5)*SIZE, (-y-0.5)*SIZE, -10000, 10000, SIZE, SIZE, name);
}
void LocalMap::requestMap(MWWorld::Ptr::CellStore* cell,
AxisAlignedBox bounds)
{
deleteBuffers();
mInterior = true;
mBounds = bounds;
@ -126,10 +174,9 @@ void LocalMap::requestMap(MWWorld::Ptr::CellStore* cell,
Vector2 length = max-min;
Vector2 center(bounds.getCenter().x, bounds.getCenter().z);
// divide into 8192*8192 segments
/// \todo interiors with more than 1 segment are untested
const int segsX = std::ceil( length.x / 8192 );
const int segsY = std::ceil( length.y / 8192 );
// divide into segments
const int segsX = std::ceil( length.x / SIZE );
const int segsY = std::ceil( length.y / SIZE );
mInteriorName = cell->cell->name;
@ -137,11 +184,11 @@ void LocalMap::requestMap(MWWorld::Ptr::CellStore* cell,
{
for (int y=0; y<segsY; ++y)
{
Vector2 start = min + Vector2(8192*x,8192*y);
Vector2 start = min + Vector2(SIZE*x,SIZE*y);
Vector2 newcenter = start + 4096;
render(newcenter.x, newcenter.y, z.y, z.x, 8192, 8192,
cell->cell->name + "_" + StringConverter::toString(x) + "_" + StringConverter::toString(y));
render(newcenter.x, newcenter.y, z.y, z.x, SIZE, SIZE,
cell->cell->name + "_" + coordStr(x,y));
}
}
}
@ -171,7 +218,7 @@ void LocalMap::render(const float x, const float y,
if (tex.isNull())
{
// try loading from disk
//if (boost::filesystem::exists(texture+CACHE_EXTENSION))
//if (boost::filesystem::exists(texture+".jpg"))
//{
/// \todo
//}
@ -182,7 +229,7 @@ void LocalMap::render(const float x, const float y,
texture,
ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
TEX_TYPE_2D,
xw*MAP_RESOLUTION/8192, yw*MAP_RESOLUTION/8192,
xw*MAP_RESOLUTION/SIZE, yw*MAP_RESOLUTION/SIZE,
0,
PF_R8G8B8,
TU_RENDERTARGET);
@ -202,7 +249,7 @@ void LocalMap::render(const float x, const float y,
texture + "_fog",
ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
TEX_TYPE_2D,
xw*FOGOFWAR_RESOLUTION/8192, yw*FOGOFWAR_RESOLUTION/8192,
xw*FOGOFWAR_RESOLUTION/SIZE, yw*FOGOFWAR_RESOLUTION/SIZE,
0,
PF_A8R8G8B8,
TU_DYNAMIC_WRITE_ONLY);
@ -222,21 +269,12 @@ void LocalMap::render(const float x, const float y,
mBuffers[texture] = buffer;
/// \todo
// save to cache for next time
//rtt->writeContentsToFile("./" + texture + CACHE_EXTENSION);
//rtt->writeContentsToFile("./" + texture + ".jpg");
}
}
if (!MaterialManager::getSingleton().getByName("testMaterial").isNull())
{
MaterialPtr mat = MaterialManager::getSingleton().getByName("testMaterial");
mat->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setTextureName(texture);
}
// re-enable fog
mRendering->getScene()->setFog(FOG_LINEAR, clr, 0, fStart, fEnd);
}
@ -254,17 +292,18 @@ void LocalMap::setPlayerPosition (const Ogre::Vector3& position)
Vector2 pos(position.x, position.z);
if (!mInterior)
{
x = (int) (pos.x / 8192.f);
y = (int) (pos.y / 8192.f);
x = std::ceil(pos.x / SIZE)-1;
y = std::ceil(-pos.y / SIZE)-1;
mCellX = x;
mCellY = y;
}
else
{
Vector2 min(mBounds.getMinimum().x, mBounds.getMinimum().z);
min *= 1.3;
/// \todo interiors with more than 1 segment are untested
x = (int) ((pos.x - min.x)/8192.f);
y = (int) ((pos.y - min.y)/8192.f);
x = std::ceil((pos.x - min.x)/SIZE)-1;
y = std::ceil((pos.y - min.y)/SIZE)-1;
}
// convert from world coordinates to texture UV coordinates
@ -272,34 +311,30 @@ void LocalMap::setPlayerPosition (const Ogre::Vector3& position)
std::string texName;
if (!mInterior)
{
u = std::abs((pos.x - (8192*x))/8192.f);
v = std::abs((pos.y - (8192*y))/8192.f);
texName = "Cell_" + StringConverter::toString(x) + "_"
+ StringConverter::toString(y);
u = std::abs((pos.x - (SIZE*x))/SIZE);
v = 1-std::abs((pos.y + (SIZE*y))/SIZE);
texName = "Cell_"+coordStr(x,y);
}
else
{
Vector2 min(mBounds.getMinimum().x, mBounds.getMinimum().z);
min *= 1.3;
u = (pos.x - min.x - 8192*x)/8192.f;
v = (pos.y - min.y - 8192*y)/8192.f;
u = (pos.x - min.x - SIZE*x)/SIZE;
v = (pos.y - min.y - SIZE*y)/SIZE;
texName = mInteriorName + "_" + StringConverter::toString(x) + "_"
+ StringConverter::toString(y);
texName = mInteriorName + "_" + coordStr(x,y);
}
//std::cout << "u " << u<< " v " << v << std::endl;
// explore radius (squared)
const float sqrExploreRadius = 0.01 * FOGOFWAR_RESOLUTION*FOGOFWAR_RESOLUTION;
// get the appropriate fog of war texture
TexturePtr tex = TextureManager::getSingleton().getByName(texName+"_fog");
if (!tex.isNull())
{
// get its buffer
if (mBuffers.find(texName) == mBuffers.end()) return;
uint32* buffer = mBuffers[texName];
uint32* pointer = buffer;
for (int texV = 0; texV<FOGOFWAR_RESOLUTION; ++texV)
@ -307,7 +342,7 @@ void LocalMap::setPlayerPosition (const Ogre::Vector3& position)
for (int texU = 0; texU<FOGOFWAR_RESOLUTION; ++texU)
{
float sqrDist = Math::Sqr(texU - u*FOGOFWAR_RESOLUTION) + Math::Sqr(texV - v*FOGOFWAR_RESOLUTION);
uint32 clr = *(uint32*)pointer;
uint32 clr = *pointer;
uint8 alpha = (clr >> 24);
alpha = std::min( alpha, (uint8) (std::max(0.f, std::min(1.f, (sqrDist/sqrExploreRadius)))*255) );
*((uint32*)pointer) = (alpha << 24);
@ -321,6 +356,11 @@ void LocalMap::setPlayerPosition (const Ogre::Vector3& position)
memcpy(tex->getBuffer()->lock(HardwareBuffer::HBL_DISCARD), buffer, FOGOFWAR_RESOLUTION*FOGOFWAR_RESOLUTION*4);
tex->getBuffer()->unlock();
if (!MaterialManager::getSingleton().getByName("testMaterial").isNull())
{
MaterialPtr mat = MaterialManager::getSingleton().getByName("testMaterial");
mat->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setTextureName(texName);
}
if (!MaterialManager::getSingleton().getByName("testMaterial2").isNull())
{
MaterialPtr mat = MaterialManager::getSingleton().getByName("testMaterial2");

13
apps/openmw/mwrender/localmap.hpp
View file

@ -42,6 +42,14 @@ namespace MWRender
*/
void setPlayerPosition (const Ogre::Vector3& position);
/**
* Save the fog of war for the current cell to disk.
* @remarks This should be called before loading a
* new cell, as well as when the game is quit.
* @param current cell
*/
void saveFogOfWar(MWWorld::Ptr::CellStore* cell);
private:
OEngine::Render::OgreRenderer* mRendering;
@ -52,6 +60,10 @@ namespace MWRender
const float xw, const float yw,
const std::string& texture);
void saveTexture(const std::string& texname, const std::string& filename);
std::string coordStr(const int x, const int y);
// a buffer for the "fog of war" texture of the current cell.
// interior cells could be divided into multiple textures,
// so we store in a map.
@ -60,6 +72,7 @@ namespace MWRender
void deleteBuffers();
bool mInterior;
int mCellX, mCellY;
Ogre::AxisAlignedBox mBounds;
std::string mInteriorName;
};

5
apps/openmw/mwrender/renderingmanager.cpp
View file

@ -335,4 +335,9 @@ void RenderingManager::requestMap(MWWorld::Ptr::CellStore* cell)
mLocalMap->requestMap(cell, mObjects.getDimensions(cell));
}
void RenderingManager::preCellChange(MWWorld::Ptr::CellStore* cell)
{
mLocalMap->saveFogOfWar(cell);
}
} // namespace

3
apps/openmw/mwrender/renderingmanager.hpp
View file

@ -76,6 +76,9 @@ class RenderingManager: private RenderingInterface {
/// when rebatching is needed and update automatically at the end of each frame.
void cellAdded (MWWorld::Ptr::CellStore *store);
void preCellChange (MWWorld::Ptr::CellStore* store);
///< this event is fired immediately before changing cell
void addObject (const MWWorld::Ptr& ptr);
void removeObject (const MWWorld::Ptr& ptr);

2
apps/openmw/mwworld/scene.cpp
View file

@ -135,6 +135,8 @@ namespace MWWorld
void Scene::changeCell (int X, int Y, const ESM::Position& position, bool adjustPlayerPos)
{
mRendering.preCellChange(mCurrentCell);
// remove active
mEnvironment.mMechanicsManager->removeActor (mWorld->getPlayer().getPlayer());