void LightArray::sample(LightQuery* query) const
{
// Handle empty light accel
if (light_indices.size() == 0 && assembly_lights.size() == 0) {
query->spec_samp = SpectralSample(query->spec_samp.hero_wavelength, 0.0f);
return;
}
const float local_prob = static_cast<double>(light_indices.size()) / (total_assembly_lights + light_indices.size());
const float child_prob = 1.0f - local_prob;
// If we're sampling a light in this assembly
if (query->n <= local_prob) {
// Update probabilities
query->n /= local_prob;
// Get light instance
const auto index = light_indices[static_cast<uint32_t>(query->n * light_indices.size()) % light_indices.size()];
const Instance& instance = assembly->instances[index]; // Shorthand
// Get light data
Light* light = dynamic_cast<Light*>(assembly->objects[instance.data_index].get());
/// Get transforms if any
if (instance.transform_count > 0) {
auto cbegin = assembly->xforms.cbegin() + instance.transform_index;
auto cend = cbegin + instance.transform_count;
auto instance_xform = lerp_seq(query->time, cbegin, cend);
query->pos = instance_xform.pos_to(query->pos);
query->nor = instance_xform.nor_to(query->nor).normalized();
query->xform *= instance_xform;
}
// Sample the light
float p;
query->spec_samp = light->sample(query->pos, query->u, query->v, query->wavelength, query->time, &(query->to_light), &p);
query->to_light = query->xform.dir_from(query->to_light);
query->light_sample_pdf = p;
// FIll in the light's instance ID
query->id.push_back(index, assembly->element_id_bits());
}
// If we're sampling a light in a child assembly
else {
// Update probabilities
query->n = (query->n - local_prob) / child_prob;
// Select assembly
// TODO: a binary search would be faster
size_t index = 0;
const size_t target_index = static_cast<size_t>(total_assembly_lights * query->n) % total_assembly_lights;
for (const auto& al: assembly_lights) {
if (std::get<0>(al) <= target_index && target_index < (std::get<0>(al) + std::get<1>(al))) {
index = std::get<2>(al);
break;
}
}
// Get assembly instance shorthand
const Instance& instance = assembly->instances[index];
// Get assembly
Assembly* child_assembly = assembly->assemblies[instance.data_index].get();
// Get transforms if any
if (instance.transform_count > 0) {
auto cbegin = assembly->xforms.cbegin() + instance.transform_index;
auto cend = cbegin + instance.transform_count;
auto instance_xform = lerp_seq(query->time, cbegin, cend);
query->pos = instance_xform.pos_to(query->pos);
query->xform *= instance_xform;
}
// Push the assembly's instance ID
query->id.push_back(index, assembly->element_id_bits());
// Traverse into child assembly
child_assembly->light_accel.sample(query);
}
// Selection PDF is just one, since all lights have equal probability of
// being selected.
query->selection_pdf = 1.0f;
}
bool TextureSource::generateImage(std::string part_of_name, video::IImage *& baseimg)
{
video::IVideoDriver* driver = m_device->getVideoDriver();
assert(driver);
// Stuff starting with [ are special commands
if(part_of_name.size() == 0 || part_of_name[0] != '[')
{
video::IImage *image = m_sourcecache.getOrLoad(part_of_name, m_device);
if(image == NULL)
{
if(part_of_name != ""){
errorstream<<"generateImage(): Could not load image \""
<<part_of_name<<"\""<<" while building texture"<<std::endl;
errorstream<<"generateImage(): Creating a dummy"
<<" image for \""<<part_of_name<<"\""<<std::endl;
}
// Just create a dummy image
//core::dimension2d<u32> dim(2,2);
core::dimension2d<u32> dim(1,1);
image = driver->createImage(video::ECF_A8R8G8B8, dim);
assert(image);
/*image->setPixel(0,0, video::SColor(255,255,0,0));
image->setPixel(1,0, video::SColor(255,0,255,0));
image->setPixel(0,1, video::SColor(255,0,0,255));
image->setPixel(1,1, video::SColor(255,255,0,255));*/
image->setPixel(0,0, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
/*image->setPixel(1,0, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
image->setPixel(0,1, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
image->setPixel(1,1, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));*/
}
// If base image is NULL, load as base.
if(baseimg == NULL)
{
//infostream<<"Setting "<<part_of_name<<" as base"<<std::endl;
/*
Copy it this way to get an alpha channel.
Otherwise images with alpha cannot be blitted on
images that don't have alpha in the original file.
*/
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
image->copyTo(baseimg);
}
// Else blit on base.
else
{
//infostream<<"Blitting "<<part_of_name<<" on base"<<std::endl;
// Size of the copied area
core::dimension2d<u32> dim = image->getDimension();
//core::dimension2d<u32> dim(16,16);
// Position to copy the blitted to in the base image
core::position2d<s32> pos_to(0,0);
// Position to copy the blitted from in the blitted image
core::position2d<s32> pos_from(0,0);
// Blit
/*image->copyToWithAlpha(baseimg, pos_to,
core::rect<s32>(pos_from, dim),
video::SColor(255,255,255,255),
NULL);*/
blit_with_alpha(image, baseimg, pos_from, pos_to, dim);
}
//cleanup
image->drop();
}
else
{
// A special texture modification
/*infostream<<"generateImage(): generating special "
<<"modification \""<<part_of_name<<"\""
<<std::endl;*/
/*
[crack:N:P
[cracko:N:P
Adds a cracking texture
N = animation frame count, P = crack progression
*/
if(part_of_name.substr(0,6) == "[crack")
{
if(baseimg == NULL)
{
errorstream<<"generateImage(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
// Crack image number and overlay option
bool use_overlay = (part_of_name[6] == 'o');
Strfnd sf(part_of_name);
sf.next(":");
s32 frame_count = stoi(sf.next(":"));
s32 progression = stoi(sf.next(":"));
/*
Load crack image.
It is an image with a number of cracking stages
horizontally tiled.
*/
video::IImage *img_crack = m_sourcecache.getOrLoad(
"crack_anylength.png", m_device);
if(img_crack && progression >= 0)
{
draw_crack(img_crack, baseimg,
use_overlay, frame_count,
progression, driver);
img_crack->drop();
}
}
/*
[combine:WxH:X,Y=filename:X,Y=filename2
Creates a bigger texture from an amount of smaller ones
*/
else if(part_of_name.substr(0,8) == "[combine")
{
Strfnd sf(part_of_name);
sf.next(":");
u32 w0 = stoi(sf.next("x"));
u32 h0 = stoi(sf.next(":"));
infostream<<"combined w="<<w0<<" h="<<h0<<std::endl;
core::dimension2d<u32> dim(w0,h0);
if(baseimg == NULL)
{
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
baseimg->fill(video::SColor(0,0,0,0));
}
while(sf.atend() == false)
{
u32 x = stoi(sf.next(","));
u32 y = stoi(sf.next("="));
std::string filename = sf.next(":");
infostream<<"Adding \""<<filename
<<"\" to combined ("<<x<<","<<y<<")"
<<std::endl;
video::IImage *img = m_sourcecache.getOrLoad(filename, m_device);
if(img)
{
core::dimension2d<u32> dim = img->getDimension();
infostream<<"Size "<<dim.Width
<<"x"<<dim.Height<<std::endl;
core::position2d<s32> pos_base(x, y);
video::IImage *img2 =
driver->createImage(video::ECF_A8R8G8B8, dim);
img->copyTo(img2);
img->drop();
/*img2->copyToWithAlpha(baseimg, pos_base,
core::rect<s32>(v2s32(0,0), dim),
video::SColor(255,255,255,255),
NULL);*/
blit_with_alpha(img2, baseimg, v2s32(0,0), pos_base, dim);
img2->drop();
}
else
{
infostream<<"img==NULL"<<std::endl;
}
}
}
/*
"[brighten"
*/
else if(part_of_name.substr(0,9) == "[brighten")
{
if(baseimg == NULL)
{
errorstream<<"generateImage(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
brighten(baseimg);
}
/*
"[noalpha"
Make image completely opaque.
Used for the leaves texture when in old leaves mode, so
that the transparent parts don't look completely black
when simple alpha channel is used for rendering.
*/
else if(part_of_name.substr(0,8) == "[noalpha")
{
if(baseimg == NULL)
{
errorstream<<"generateImage(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
core::dimension2d<u32> dim = baseimg->getDimension();
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = baseimg->getPixel(x,y);
c.setAlpha(255);
baseimg->setPixel(x,y,c);
}
}
/*
"[makealpha:R,G,B"
Convert one color to transparent.
*/
else if(part_of_name.substr(0,11) == "[makealpha:")
{
if(baseimg == NULL)
{
errorstream<<"generateImage(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
Strfnd sf(part_of_name.substr(11));
u32 r1 = stoi(sf.next(","));
u32 g1 = stoi(sf.next(","));
u32 b1 = stoi(sf.next(""));
std::string filename = sf.next("");
core::dimension2d<u32> dim = baseimg->getDimension();
/*video::IImage *oldbaseimg = baseimg;
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
oldbaseimg->copyTo(baseimg);
oldbaseimg->drop();*/
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = baseimg->getPixel(x,y);
u32 r = c.getRed();
u32 g = c.getGreen();
u32 b = c.getBlue();
if(!(r == r1 && g == g1 && b == b1))
continue;
c.setAlpha(0);
baseimg->setPixel(x,y,c);
}
}
/*
"[transformN"
Rotates and/or flips the image.
N can be a number (between 0 and 7) or a transform name.
Rotations are counter-clockwise.
0 I identity
1 R90 rotate by 90 degrees
2 R180 rotate by 180 degrees
3 R270 rotate by 270 degrees
4 FX flip X
5 FXR90 flip X then rotate by 90 degrees
6 FY flip Y
7 FYR90 flip Y then rotate by 90 degrees
Note: Transform names can be concatenated to produce
their product (applies the first then the second).
The resulting transform will be equivalent to one of the
eight existing ones, though (see: dihedral group).
*/
else if(part_of_name.substr(0,10) == "[transform")
{
if(baseimg == NULL)
{
errorstream<<"generateImage(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
u32 transform = parseImageTransform(part_of_name.substr(10));
core::dimension2d<u32> dim = imageTransformDimension(
transform, baseimg->getDimension());
video::IImage *image = driver->createImage(
baseimg->getColorFormat(), dim);
assert(image);
imageTransform(transform, baseimg, image);
baseimg->drop();
baseimg = image;
}
/*
[inventorycube{topimage{leftimage{rightimage
In every subimage, replace ^ with &.
Create an "inventory cube".
NOTE: This should be used only on its own.
Example (a grass block (not actually used in game):
"[inventorycube{grass.png{mud.png&grass_side.png{mud.png&grass_side.png"
*/
else if(part_of_name.substr(0,14) == "[inventorycube")
{
if(baseimg != NULL)
{
errorstream<<"generateImage(): baseimg!=NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
str_replace_char(part_of_name, '&', '^');
Strfnd sf(part_of_name);
sf.next("{");
std::string imagename_top = sf.next("{");
std::string imagename_left = sf.next("{");
std::string imagename_right = sf.next("{");
// Generate images for the faces of the cube
video::IImage *img_top =
generateImageFromScratch(imagename_top);
video::IImage *img_left =
generateImageFromScratch(imagename_left);
video::IImage *img_right =
generateImageFromScratch(imagename_right);
assert(img_top && img_left && img_right);
// Create textures from images
video::ITexture *texture_top = driver->addTexture(
(imagename_top + "__temp__").c_str(), img_top);
video::ITexture *texture_left = driver->addTexture(
(imagename_left + "__temp__").c_str(), img_left);
video::ITexture *texture_right = driver->addTexture(
(imagename_right + "__temp__").c_str(), img_right);
assert(texture_top && texture_left && texture_right);
// Drop images
img_top->drop();
img_left->drop();
img_right->drop();
/*
Draw a cube mesh into a render target texture
*/
scene::IMesh* cube = createCubeMesh(v3f(1, 1, 1));
setMeshColor(cube, video::SColor(255, 255, 255, 255));
cube->getMeshBuffer(0)->getMaterial().setTexture(0, texture_top);
cube->getMeshBuffer(1)->getMaterial().setTexture(0, texture_top);
cube->getMeshBuffer(2)->getMaterial().setTexture(0, texture_right);
cube->getMeshBuffer(3)->getMaterial().setTexture(0, texture_right);
cube->getMeshBuffer(4)->getMaterial().setTexture(0, texture_left);
cube->getMeshBuffer(5)->getMaterial().setTexture(0, texture_left);
TextureFromMeshParams params;
params.mesh = cube;
params.dim.set(64, 64);
params.rtt_texture_name = part_of_name + "_RTT";
// We will delete the rtt texture ourselves
params.delete_texture_on_shutdown = false;
params.camera_position.set(0, 1.0, -1.5);
params.camera_position.rotateXZBy(45);
params.camera_lookat.set(0, 0, 0);
// Set orthogonal projection
params.camera_projection_matrix.buildProjectionMatrixOrthoLH(
1.65, 1.65, 0, 100);
params.ambient_light.set(1.0, 0.2, 0.2, 0.2);
params.light_position.set(10, 100, -50);
params.light_color.set(1.0, 0.5, 0.5, 0.5);
params.light_radius = 1000;
video::ITexture *rtt = generateTextureFromMesh(params);
// Drop mesh
cube->drop();
// Free textures of images
driver->removeTexture(texture_top);
driver->removeTexture(texture_left);
driver->removeTexture(texture_right);
if(rtt == NULL)
{
baseimg = generateImageFromScratch(imagename_top);
return true;
}
// Create image of render target
video::IImage *image = driver->createImage(rtt, v2s32(0,0), params.dim);
assert(image);
// Cleanup texture
driver->removeTexture(rtt);
baseimg = driver->createImage(video::ECF_A8R8G8B8, params.dim);
if(image)
{
image->copyTo(baseimg);
image->drop();
}
}
/*
[lowpart:percent:filename
Adds the lower part of a texture
*/
else if(part_of_name.substr(0,9) == "[lowpart:")
{
Strfnd sf(part_of_name);
sf.next(":");
u32 percent = stoi(sf.next(":"));
std::string filename = sf.next(":");
//infostream<<"power part "<<percent<<"%% of "<<filename<<std::endl;
if(baseimg == NULL)
baseimg = driver->createImage(video::ECF_A8R8G8B8, v2u32(16,16));
video::IImage *img = m_sourcecache.getOrLoad(filename, m_device);
if(img)
{
core::dimension2d<u32> dim = img->getDimension();
core::position2d<s32> pos_base(0, 0);
video::IImage *img2 =
driver->createImage(video::ECF_A8R8G8B8, dim);
img->copyTo(img2);
img->drop();
core::position2d<s32> clippos(0, 0);
clippos.Y = dim.Height * (100-percent) / 100;
core::dimension2d<u32> clipdim = dim;
clipdim.Height = clipdim.Height * percent / 100 + 1;
core::rect<s32> cliprect(clippos, clipdim);
img2->copyToWithAlpha(baseimg, pos_base,
core::rect<s32>(v2s32(0,0), dim),
video::SColor(255,255,255,255),
&cliprect);
img2->drop();
}
}
/*
[verticalframe:N:I
Crops a frame of a vertical animation.
N = frame count, I = frame index
*/
else if(part_of_name.substr(0,15) == "[verticalframe:")
{
Strfnd sf(part_of_name);
sf.next(":");
u32 frame_count = stoi(sf.next(":"));
u32 frame_index = stoi(sf.next(":"));
if(baseimg == NULL){
errorstream<<"generateImage(): baseimg!=NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
v2u32 frame_size = baseimg->getDimension();
if (frame_count)
frame_size.Y /= frame_count;
video::IImage *img = driver->createImage(video::ECF_A8R8G8B8,
frame_size);
if(!img){
errorstream<<"generateImage(): Could not create image "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
// Fill target image with transparency
img->fill(video::SColor(0,0,0,0));
core::dimension2d<u32> dim = frame_size;
core::position2d<s32> pos_dst(0, 0);
core::position2d<s32> pos_src(0, frame_index * frame_size.Y);
baseimg->copyToWithAlpha(img, pos_dst,
core::rect<s32>(pos_src, dim),
video::SColor(255,255,255,255),
NULL);
// Replace baseimg
baseimg->drop();
baseimg = img;
}
else
{
errorstream<<"generateImage(): Invalid "
" modification: \""<<part_of_name<<"\""<<std::endl;
}
}
return true;
}
/*
This method generates all the textures
*/
u32 TextureSource::getTextureIdDirect(const std::string &name)
{
//infostream<<"getTextureIdDirect(): name=\""<<name<<"\""<<std::endl;
// Empty name means texture 0
if(name == "")
{
infostream<<"getTextureIdDirect(): name is empty"<<std::endl;
return 0;
}
/*
Calling only allowed from main thread
*/
if(get_current_thread_id() != m_main_thread)
{
errorstream<<"TextureSource::getTextureIdDirect() "
"called not from main thread"<<std::endl;
return 0;
}
/*
See if texture already exists
*/
{
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
core::map<std::string, u32>::Node *n;
n = m_name_to_id.find(name);
if(n != NULL)
{
/*infostream<<"getTextureIdDirect(): \""<<name
<<"\" found in cache"<<std::endl;*/
return n->getValue();
}
}
/*infostream<<"getTextureIdDirect(): \""<<name
<<"\" NOT found in cache. Creating it."<<std::endl;*/
/*
Get the base image
*/
char separator = '^';
/*
This is set to the id of the base image.
If left 0, there is no base image and a completely new image
is made.
*/
u32 base_image_id = 0;
// Find last meta separator in name
s32 last_separator_position = -1;
for(s32 i=name.size()-1; i>=0; i--)
{
if(name[i] == separator)
{
last_separator_position = i;
break;
}
}
/*
If separator was found, construct the base name and make the
base image using a recursive call
*/
std::string base_image_name;
if(last_separator_position != -1)
{
// Construct base name
base_image_name = name.substr(0, last_separator_position);
/*infostream<<"getTextureIdDirect(): Calling itself recursively"
" to get base image of \""<<name<<"\" = \""
<<base_image_name<<"\""<<std::endl;*/
base_image_id = getTextureIdDirect(base_image_name);
}
//infostream<<"base_image_id="<<base_image_id<<std::endl;
video::IVideoDriver* driver = m_device->getVideoDriver();
assert(driver);
video::ITexture *t = NULL;
/*
An image will be built from files and then converted into a texture.
*/
video::IImage *baseimg = NULL;
// If a base image was found, copy it to baseimg
if(base_image_id != 0)
{
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
SourceAtlasPointer ap = m_atlaspointer_cache[base_image_id];
video::IImage *image = ap.atlas_img;
if(image == NULL)
{
infostream<<"getTextureIdDirect(): WARNING: NULL image in "
<<"cache: \""<<base_image_name<<"\""
<<std::endl;
}
else
{
core::dimension2d<u32> dim = ap.intsize;
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
core::position2d<s32> pos_to(0,0);
core::position2d<s32> pos_from = ap.intpos;
image->copyTo(
baseimg, // target
v2s32(0,0), // position in target
core::rect<s32>(pos_from, dim) // from
);
/*infostream<<"getTextureIdDirect(): Loaded \""
<<base_image_name<<"\" from image cache"
<<std::endl;*/
}
}
/*
Parse out the last part of the name of the image and act
according to it
*/
std::string last_part_of_name = name.substr(last_separator_position+1);
//infostream<<"last_part_of_name=\""<<last_part_of_name<<"\""<<std::endl;
// Generate image according to part of name
if(!generate_image(last_part_of_name, baseimg, m_device, &m_sourcecache))
{
errorstream<<"getTextureIdDirect(): "
"failed to generate \""<<last_part_of_name<<"\""
<<std::endl;
}
// If no resulting image, print a warning
if(baseimg == NULL)
{
errorstream<<"getTextureIdDirect(): baseimg is NULL (attempted to"
" create texture \""<<name<<"\""<<std::endl;
}
if(baseimg != NULL)
{
// Create texture from resulting image
t = driver->addTexture(name.c_str(), baseimg);
}
/*
Add texture to caches (add NULL textures too)
*/
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
u32 id = m_atlaspointer_cache.size();
AtlasPointer ap(id);
ap.atlas = t;
ap.pos = v2f(0,0);
ap.size = v2f(1,1);
ap.tiled = 0;
core::dimension2d<u32> baseimg_dim(0,0);
if(baseimg)
baseimg_dim = baseimg->getDimension();
SourceAtlasPointer nap(name, ap, baseimg, v2s32(0,0), baseimg_dim);
m_atlaspointer_cache.push_back(nap);
m_name_to_id.insert(name, id);
/*infostream<<"getTextureIdDirect(): "
<<"Returning id="<<id<<" for name \""<<name<<"\""<<std::endl;*/
return id;
}
bool generate_image(std::string part_of_name, video::IImage *& baseimg,
IrrlichtDevice *device, SourceImageCache *sourcecache)
{
video::IVideoDriver* driver = device->getVideoDriver();
assert(driver);
// Stuff starting with [ are special commands
if(part_of_name.size() == 0 || part_of_name[0] != '[')
{
video::IImage *image = sourcecache->getOrLoad(part_of_name, device);
if(image == NULL)
{
if(part_of_name != ""){
errorstream<<"generate_image(): Could not load image \""
<<part_of_name<<"\""<<" while building texture"<<std::endl;
errorstream<<"generate_image(): Creating a dummy"
<<" image for \""<<part_of_name<<"\""<<std::endl;
}
// Just create a dummy image
//core::dimension2d<u32> dim(2,2);
core::dimension2d<u32> dim(1,1);
image = driver->createImage(video::ECF_A8R8G8B8, dim);
assert(image);
/*image->setPixel(0,0, video::SColor(255,255,0,0));
image->setPixel(1,0, video::SColor(255,0,255,0));
image->setPixel(0,1, video::SColor(255,0,0,255));
image->setPixel(1,1, video::SColor(255,255,0,255));*/
image->setPixel(0,0, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
/*image->setPixel(1,0, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
image->setPixel(0,1, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
image->setPixel(1,1, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));*/
}
// If base image is NULL, load as base.
if(baseimg == NULL)
{
//infostream<<"Setting "<<part_of_name<<" as base"<<std::endl;
/*
Copy it this way to get an alpha channel.
Otherwise images with alpha cannot be blitted on
images that don't have alpha in the original file.
*/
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
image->copyTo(baseimg);
image->drop();
}
// Else blit on base.
else
{
//infostream<<"Blitting "<<part_of_name<<" on base"<<std::endl;
// Size of the copied area
core::dimension2d<u32> dim = image->getDimension();
//core::dimension2d<u32> dim(16,16);
// Position to copy the blitted to in the base image
core::position2d<s32> pos_to(0,0);
// Position to copy the blitted from in the blitted image
core::position2d<s32> pos_from(0,0);
// Blit
image->copyToWithAlpha(baseimg, pos_to,
core::rect<s32>(pos_from, dim),
video::SColor(255,255,255,255),
NULL);
// Drop image
image->drop();
}
}
else
{
// A special texture modification
/*infostream<<"generate_image(): generating special "
<<"modification \""<<part_of_name<<"\""
<<std::endl;*/
/*
This is the simplest of all; it just adds stuff to the
name so that a separate texture is created.
It is used to make textures for stuff that doesn't want
to implement getting the texture from a bigger texture
atlas.
*/
if(part_of_name == "[forcesingle")
{
// If base image is NULL, create a random color
if(baseimg == NULL)
{
core::dimension2d<u32> dim(1,1);
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
assert(baseimg);
baseimg->setPixel(0,0, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
}
}
/*
[crackN
Adds a cracking texture
*/
else if(part_of_name.substr(0,6) == "[crack")
{
if(baseimg == NULL)
{
errorstream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
// Crack image number and overlay option
s32 progression = 0;
bool use_overlay = false;
if(part_of_name.substr(6,1) == "o")
{
progression = stoi(part_of_name.substr(7));
use_overlay = true;
}
else
{
progression = stoi(part_of_name.substr(6));
use_overlay = false;
}
// Size of the base image
core::dimension2d<u32> dim_base = baseimg->getDimension();
/*
Load crack image.
It is an image with a number of cracking stages
horizontally tiled.
*/
video::IImage *img_crack = sourcecache->getOrLoad("crack.png", device);
if(img_crack && progression >= 0)
{
// Dimension of original image
core::dimension2d<u32> dim_crack
= img_crack->getDimension();
// Count of crack stages
s32 crack_count = dim_crack.Height / dim_crack.Width;
// Limit progression
if(progression > crack_count-1)
progression = crack_count-1;
// Dimension of a single crack stage
core::dimension2d<u32> dim_crack_cropped(
dim_crack.Width,
dim_crack.Width
);
// Create cropped and scaled crack images
video::IImage *img_crack_cropped = driver->createImage(
video::ECF_A8R8G8B8, dim_crack_cropped);
video::IImage *img_crack_scaled = driver->createImage(
video::ECF_A8R8G8B8, dim_base);
if(img_crack_cropped && img_crack_scaled)
{
// Crop crack image
v2s32 pos_crack(0, progression*dim_crack.Width);
img_crack->copyTo(img_crack_cropped,
v2s32(0,0),
core::rect<s32>(pos_crack, dim_crack_cropped));
// Scale crack image by copying
img_crack_cropped->copyToScaling(img_crack_scaled);
// Copy or overlay crack image
if(use_overlay)
{
overlay(baseimg, img_crack_scaled);
}
else
{
img_crack_scaled->copyToWithAlpha(
baseimg,
v2s32(0,0),
core::rect<s32>(v2s32(0,0), dim_base),
video::SColor(255,255,255,255));
}
}
if(img_crack_scaled)
img_crack_scaled->drop();
if(img_crack_cropped)
img_crack_cropped->drop();
img_crack->drop();
}
}
/*
[combine:WxH:X,Y=filename:X,Y=filename2
Creates a bigger texture from an amount of smaller ones
*/
else if(part_of_name.substr(0,8) == "[combine")
{
Strfnd sf(part_of_name);
sf.next(":");
u32 w0 = stoi(sf.next("x"));
u32 h0 = stoi(sf.next(":"));
infostream<<"combined w="<<w0<<" h="<<h0<<std::endl;
core::dimension2d<u32> dim(w0,h0);
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
while(sf.atend() == false)
{
u32 x = stoi(sf.next(","));
u32 y = stoi(sf.next("="));
std::string filename = sf.next(":");
infostream<<"Adding \""<<filename
<<"\" to combined ("<<x<<","<<y<<")"
<<std::endl;
video::IImage *img = sourcecache->getOrLoad(filename, device);
if(img)
{
core::dimension2d<u32> dim = img->getDimension();
infostream<<"Size "<<dim.Width
<<"x"<<dim.Height<<std::endl;
core::position2d<s32> pos_base(x, y);
video::IImage *img2 =
driver->createImage(video::ECF_A8R8G8B8, dim);
img->copyTo(img2);
img->drop();
img2->copyToWithAlpha(baseimg, pos_base,
core::rect<s32>(v2s32(0,0), dim),
video::SColor(255,255,255,255),
NULL);
img2->drop();
}
else
{
infostream<<"img==NULL"<<std::endl;
}
}
}
/*
"[brighten"
*/
else if(part_of_name.substr(0,9) == "[brighten")
{
if(baseimg == NULL)
{
errorstream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
brighten(baseimg);
}
/*
"[noalpha"
Make image completely opaque.
Used for the leaves texture when in old leaves mode, so
that the transparent parts don't look completely black
when simple alpha channel is used for rendering.
*/
else if(part_of_name.substr(0,8) == "[noalpha")
{
if(baseimg == NULL)
{
errorstream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
core::dimension2d<u32> dim = baseimg->getDimension();
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = baseimg->getPixel(x,y);
c.setAlpha(255);
baseimg->setPixel(x,y,c);
}
}
/*
"[makealpha:R,G,B"
Convert one color to transparent.
*/
else if(part_of_name.substr(0,11) == "[makealpha:")
{
if(baseimg == NULL)
{
errorstream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
Strfnd sf(part_of_name.substr(11));
u32 r1 = stoi(sf.next(","));
u32 g1 = stoi(sf.next(","));
u32 b1 = stoi(sf.next(""));
std::string filename = sf.next("");
core::dimension2d<u32> dim = baseimg->getDimension();
/*video::IImage *oldbaseimg = baseimg;
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
oldbaseimg->copyTo(baseimg);
oldbaseimg->drop();*/
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = baseimg->getPixel(x,y);
u32 r = c.getRed();
u32 g = c.getGreen();
u32 b = c.getBlue();
if(!(r == r1 && g == g1 && b == b1))
continue;
c.setAlpha(0);
baseimg->setPixel(x,y,c);
}
}
/*
[inventorycube{topimage{leftimage{rightimage
In every subimage, replace ^ with &.
Create an "inventory cube".
NOTE: This should be used only on its own.
Example (a grass block (not actually used in game):
"[inventorycube{grass.png{mud.png&grass_side.png{mud.png&grass_side.png"
*/
else if(part_of_name.substr(0,14) == "[inventorycube")
{
if(baseimg != NULL)
{
errorstream<<"generate_image(): baseimg!=NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
str_replace_char(part_of_name, '&', '^');
Strfnd sf(part_of_name);
sf.next("{");
std::string imagename_top = sf.next("{");
std::string imagename_left = sf.next("{");
std::string imagename_right = sf.next("{");
// Generate images for the faces of the cube
video::IImage *img_top = generate_image_from_scratch(
imagename_top, device, sourcecache);
video::IImage *img_left = generate_image_from_scratch(
imagename_left, device, sourcecache);
video::IImage *img_right = generate_image_from_scratch(
imagename_right, device, sourcecache);
assert(img_top && img_left && img_right);
// Create textures from images
video::ITexture *texture_top = driver->addTexture(
(imagename_top + "__temp__").c_str(), img_top);
video::ITexture *texture_left = driver->addTexture(
(imagename_left + "__temp__").c_str(), img_left);
video::ITexture *texture_right = driver->addTexture(
(imagename_right + "__temp__").c_str(), img_right);
assert(texture_top && texture_left && texture_right);
// Drop images
img_top->drop();
img_left->drop();
img_right->drop();
/*
Draw a cube mesh into a render target texture
*/
scene::IMesh* cube = createCubeMesh(v3f(1, 1, 1));
setMeshColor(cube, video::SColor(255, 255, 255, 255));
cube->getMeshBuffer(0)->getMaterial().setTexture(0, texture_top);
cube->getMeshBuffer(1)->getMaterial().setTexture(0, texture_top);
cube->getMeshBuffer(2)->getMaterial().setTexture(0, texture_right);
cube->getMeshBuffer(3)->getMaterial().setTexture(0, texture_right);
cube->getMeshBuffer(4)->getMaterial().setTexture(0, texture_left);
cube->getMeshBuffer(5)->getMaterial().setTexture(0, texture_left);
core::dimension2d<u32> dim(64,64);
std::string rtt_texture_name = part_of_name + "_RTT";
v3f camera_position(0, 1.0, -1.5);
camera_position.rotateXZBy(45);
v3f camera_lookat(0, 0, 0);
core::CMatrix4<f32> camera_projection_matrix;
// Set orthogonal projection
camera_projection_matrix.buildProjectionMatrixOrthoLH(
1.65, 1.65, 0, 100);
video::SColorf ambient_light(0.2,0.2,0.2);
v3f light_position(10, 100, -50);
video::SColorf light_color(0.5,0.5,0.5);
f32 light_radius = 1000;
video::ITexture *rtt = generateTextureFromMesh(
cube, device, dim, rtt_texture_name,
camera_position,
camera_lookat,
camera_projection_matrix,
ambient_light,
light_position,
light_color,
light_radius);
// Drop mesh
cube->drop();
// Free textures of images
driver->removeTexture(texture_top);
driver->removeTexture(texture_left);
driver->removeTexture(texture_right);
if(rtt == NULL)
{
baseimg = generate_image_from_scratch(
imagename_top, device, sourcecache);
return true;
}
// Create image of render target
video::IImage *image = driver->createImage(rtt, v2s32(0,0), dim);
assert(image);
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
if(image)
{
image->copyTo(baseimg);
image->drop();
}
}
else
{
errorstream<<"generate_image(): Invalid "
" modification: \""<<part_of_name<<"\""<<std::endl;
}
}
return true;
}
bool generate_image(std::string part_of_name, video::IImage *& baseimg,
IrrlichtDevice *device)
{
video::IVideoDriver* driver = device->getVideoDriver();
assert(driver);
// Stuff starting with [ are special commands
if(part_of_name[0] != '[')
{
// A normal texture; load it from a file
std::string path = getTexturePath(part_of_name.c_str());
/*infostream<<"generate_image(): Loading path \""<<path
<<"\""<<std::endl;*/
video::IImage *image = driver->createImageFromFile(path.c_str());
if(image == NULL)
{
infostream<<"generate_image(): Could not load image \""
<<part_of_name<<"\" from path \""<<path<<"\""
<<" while building texture"<<std::endl;
//return false;
infostream<<"generate_image(): Creating a dummy"
<<" image for \""<<part_of_name<<"\""<<std::endl;
// Just create a dummy image
//core::dimension2d<u32> dim(2,2);
core::dimension2d<u32> dim(1,1);
image = driver->createImage(video::ECF_A8R8G8B8, dim);
assert(image);
/*image->setPixel(0,0, video::SColor(255,255,0,0));
image->setPixel(1,0, video::SColor(255,0,255,0));
image->setPixel(0,1, video::SColor(255,0,0,255));
image->setPixel(1,1, video::SColor(255,255,0,255));*/
image->setPixel(0,0, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
/*image->setPixel(1,0, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
image->setPixel(0,1, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));
image->setPixel(1,1, video::SColor(255,myrand()%256,
myrand()%256,myrand()%256));*/
}
// If base image is NULL, load as base.
if(baseimg == NULL)
{
//infostream<<"Setting "<<part_of_name<<" as base"<<std::endl;
/*
Copy it this way to get an alpha channel.
Otherwise images with alpha cannot be blitted on
images that don't have alpha in the original file.
*/
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
image->copyTo(baseimg);
image->drop();
}
// Else blit on base.
else
{
//infostream<<"Blitting "<<part_of_name<<" on base"<<std::endl;
// Size of the copied area
core::dimension2d<u32> dim = image->getDimension();
//core::dimension2d<u32> dim(16,16);
// Position to copy the blitted to in the base image
core::position2d<s32> pos_to(0,0);
// Position to copy the blitted from in the blitted image
core::position2d<s32> pos_from(0,0);
// Blit
image->copyToWithAlpha(baseimg, pos_to,
core::rect<s32>(pos_from, dim),
video::SColor(255,255,255,255),
NULL);
// Drop image
image->drop();
}
}
else
{
// A special texture modification
infostream<<"generate_image(): generating special "
<<"modification \""<<part_of_name<<"\""
<<std::endl;
/*
This is the simplest of all; it just adds stuff to the
name so that a separate texture is created.
It is used to make textures for stuff that doesn't want
to implement getting the texture from a bigger texture
atlas.
*/
if(part_of_name == "[forcesingle")
{
}
/*
[crackN
Adds a cracking texture
*/
else if(part_of_name.substr(0,6) == "[crack")
{
if(baseimg == NULL)
{
infostream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
// Crack image number
u16 progression = stoi(part_of_name.substr(6));
// Size of the base image
core::dimension2d<u32> dim_base = baseimg->getDimension();
/*
Load crack image.
It is an image with a number of cracking stages
horizontally tiled.
*/
video::IImage *img_crack = driver->createImageFromFile(
getTexturePath("crack.png").c_str());
if(img_crack)
{
// Dimension of original image
core::dimension2d<u32> dim_crack
= img_crack->getDimension();
// Count of crack stages
u32 crack_count = dim_crack.Height / dim_crack.Width;
// Limit progression
if(progression > crack_count-1)
progression = crack_count-1;
// Dimension of a single scaled crack stage
core::dimension2d<u32> dim_crack_scaled_single(
dim_base.Width,
dim_base.Height
);
// Dimension of scaled size
core::dimension2d<u32> dim_crack_scaled(
dim_crack_scaled_single.Width,
dim_crack_scaled_single.Height * crack_count
);
// Create scaled crack image
video::IImage *img_crack_scaled = driver->createImage(
video::ECF_A8R8G8B8, dim_crack_scaled);
if(img_crack_scaled)
{
// Scale crack image by copying
img_crack->copyToScaling(img_crack_scaled);
// Position to copy the crack from
core::position2d<s32> pos_crack_scaled(
0,
dim_crack_scaled_single.Height * progression
);
// This tiling does nothing currently but is useful
for(u32 y0=0; y0<dim_base.Height
/ dim_crack_scaled_single.Height; y0++)
for(u32 x0=0; x0<dim_base.Width
/ dim_crack_scaled_single.Width; x0++)
{
// Position to copy the crack to in the base image
core::position2d<s32> pos_base(
x0*dim_crack_scaled_single.Width,
y0*dim_crack_scaled_single.Height
);
// Rectangle to copy the crack from on the scaled image
core::rect<s32> rect_crack_scaled(
pos_crack_scaled,
dim_crack_scaled_single
);
// Copy it
img_crack_scaled->copyToWithAlpha(baseimg, pos_base,
rect_crack_scaled,
video::SColor(255,255,255,255),
NULL);
}
img_crack_scaled->drop();
}
img_crack->drop();
}
}
/*
[combine:WxH:X,Y=filename:X,Y=filename2
Creates a bigger texture from an amount of smaller ones
*/
else if(part_of_name.substr(0,8) == "[combine")
{
Strfnd sf(part_of_name);
sf.next(":");
u32 w0 = stoi(sf.next("x"));
u32 h0 = stoi(sf.next(":"));
infostream<<"combined w="<<w0<<" h="<<h0<<std::endl;
core::dimension2d<u32> dim(w0,h0);
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
while(sf.atend() == false)
{
u32 x = stoi(sf.next(","));
u32 y = stoi(sf.next("="));
std::string filename = sf.next(":");
infostream<<"Adding \""<<filename
<<"\" to combined ("<<x<<","<<y<<")"
<<std::endl;
video::IImage *img = driver->createImageFromFile(
getTexturePath(filename.c_str()).c_str());
if(img)
{
core::dimension2d<u32> dim = img->getDimension();
infostream<<"Size "<<dim.Width
<<"x"<<dim.Height<<std::endl;
core::position2d<s32> pos_base(x, y);
video::IImage *img2 =
driver->createImage(video::ECF_A8R8G8B8, dim);
img->copyTo(img2);
img->drop();
img2->copyToWithAlpha(baseimg, pos_base,
core::rect<s32>(v2s32(0,0), dim),
video::SColor(255,255,255,255),
NULL);
img2->drop();
}
else
{
infostream<<"img==NULL"<<std::endl;
}
}
}
/*
[progressbarN
Adds a progress bar, 0.0 <= N <= 1.0
*/
else if(part_of_name.substr(0,12) == "[progressbar")
{
if(baseimg == NULL)
{
infostream<<"generate_image(): baseimg==NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
float value = stof(part_of_name.substr(12));
make_progressbar(value, baseimg);
}
/*
"[noalpha:filename.png"
Use an image without it's alpha channel.
Used for the leaves texture when in old leaves mode, so
that the transparent parts don't look completely black
when simple alpha channel is used for rendering.
*/
else if(part_of_name.substr(0,8) == "[noalpha")
{
if(baseimg != NULL)
{
infostream<<"generate_image(): baseimg!=NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
std::string filename = part_of_name.substr(9);
std::string path = getTexturePath(filename.c_str());
infostream<<"generate_image(): Loading path \""<<path
<<"\""<<std::endl;
video::IImage *image = driver->createImageFromFile(path.c_str());
if(image == NULL)
{
infostream<<"generate_image(): Loading path \""
<<path<<"\" failed"<<std::endl;
}
else
{
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = image->getPixel(x,y);
c.setAlpha(255);
image->setPixel(x,y,c);
}
// Blit
image->copyTo(baseimg);
image->drop();
}
}
/*
"[makealpha:R,G,B:filename.png"
Use an image with converting one color to transparent.
*/
else if(part_of_name.substr(0,11) == "[makealpha:")
{
if(baseimg != NULL)
{
infostream<<"generate_image(): baseimg!=NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
Strfnd sf(part_of_name.substr(11));
u32 r1 = stoi(sf.next(","));
u32 g1 = stoi(sf.next(","));
u32 b1 = stoi(sf.next(":"));
std::string filename = sf.next("");
std::string path = getTexturePath(filename.c_str());
infostream<<"generate_image(): Loading path \""<<path
<<"\""<<std::endl;
video::IImage *image = driver->createImageFromFile(path.c_str());
if(image == NULL)
{
infostream<<"generate_image(): Loading path \""
<<path<<"\" failed"<<std::endl;
}
else
{
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = image->getPixel(x,y);
u32 r = c.getRed();
u32 g = c.getGreen();
u32 b = c.getBlue();
if(!(r == r1 && g == g1 && b == b1))
continue;
c.setAlpha(0);
image->setPixel(x,y,c);
}
// Blit
image->copyTo(baseimg);
image->drop();
}
}
/*
"[makealpha2:R,G,B;R2,G2,B2:filename.png"
Use an image with converting two colors to transparent.
*/
else if(part_of_name.substr(0,12) == "[makealpha2:")
{
if(baseimg != NULL)
{
infostream<<"generate_image(): baseimg!=NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
Strfnd sf(part_of_name.substr(12));
u32 r1 = stoi(sf.next(","));
u32 g1 = stoi(sf.next(","));
u32 b1 = stoi(sf.next(";"));
u32 r2 = stoi(sf.next(","));
u32 g2 = stoi(sf.next(","));
u32 b2 = stoi(sf.next(":"));
std::string filename = sf.next("");
std::string path = getTexturePath(filename.c_str());
infostream<<"generate_image(): Loading path \""<<path
<<"\""<<std::endl;
video::IImage *image = driver->createImageFromFile(path.c_str());
if(image == NULL)
{
infostream<<"generate_image(): Loading path \""
<<path<<"\" failed"<<std::endl;
}
else
{
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = image->getPixel(x,y);
u32 r = c.getRed();
u32 g = c.getGreen();
u32 b = c.getBlue();
if(!(r == r1 && g == g1 && b == b1) &&
!(r == r2 && g == g2 && b == b2))
continue;
c.setAlpha(0);
image->setPixel(x,y,c);
}
// Blit
image->copyTo(baseimg);
image->drop();
}
}
/*
[inventorycube{topimage{leftimage{rightimage
In every subimage, replace ^ with &.
Create an "inventory cube".
NOTE: This should be used only on its own.
Example (a grass block (not actually used in game):
"[inventorycube{grass.png{mud.png&grass_side.png{mud.png&grass_side.png"
*/
else if(part_of_name.substr(0,14) == "[inventorycube")
{
if(baseimg != NULL)
{
infostream<<"generate_image(): baseimg!=NULL "
<<"for part_of_name=\""<<part_of_name
<<"\", cancelling."<<std::endl;
return false;
}
str_replace_char(part_of_name, '&', '^');
Strfnd sf(part_of_name);
sf.next("{");
std::string imagename_top = sf.next("{");
std::string imagename_left = sf.next("{");
std::string imagename_right = sf.next("{");
#if 1
//TODO
if(driver->queryFeature(video::EVDF_RENDER_TO_TARGET) == false)
{
infostream<<"generate_image(): EVDF_RENDER_TO_TARGET"
" not supported. Creating fallback image"<<std::endl;
baseimg = generate_image_from_scratch(
imagename_top, device);
return true;
}
u32 w0 = 64;
u32 h0 = 64;
//infostream<<"inventorycube w="<<w0<<" h="<<h0<<std::endl;
core::dimension2d<u32> dim(w0,h0);
// Generate images for the faces of the cube
video::IImage *img_top = generate_image_from_scratch(
imagename_top, device);
video::IImage *img_left = generate_image_from_scratch(
imagename_left, device);
video::IImage *img_right = generate_image_from_scratch(
imagename_right, device);
assert(img_top && img_left && img_right);
// TODO: Create textures from images
video::ITexture *texture_top = driver->addTexture(
(imagename_top + "__temp__").c_str(), img_top);
assert(texture_top);
// Drop images
img_top->drop();
img_left->drop();
img_right->drop();
// Create render target texture
video::ITexture *rtt = NULL;
std::string rtt_name = part_of_name + "_RTT";
rtt = driver->addRenderTargetTexture(dim, rtt_name.c_str(),
video::ECF_A8R8G8B8);
assert(rtt);
// Set render target
driver->setRenderTarget(rtt, true, true,
video::SColor(0,0,0,0));
// Get a scene manager
scene::ISceneManager *smgr_main = device->getSceneManager();
assert(smgr_main);
scene::ISceneManager *smgr = smgr_main->createNewSceneManager();
assert(smgr);
/*
Create scene:
- An unit cube is centered at 0,0,0
- Camera looks at cube from Y+, Z- towards Y-, Z+
NOTE: Cube has to be changed to something else because
the textures cannot be set individually (or can they?)
*/
scene::ISceneNode* cube = smgr->addCubeSceneNode(1.0, NULL, -1,
v3f(0,0,0), v3f(0, 45, 0));
// Set texture of cube
cube->setMaterialTexture(0, texture_top);
//cube->setMaterialFlag(video::EMF_LIGHTING, false);
cube->setMaterialFlag(video::EMF_ANTI_ALIASING, false);
cube->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
scene::ICameraSceneNode* camera = smgr->addCameraSceneNode(0,
v3f(0, 1.0, -1.5), v3f(0, 0, 0));
// Set orthogonal projection
core::CMatrix4<f32> pm;
pm.buildProjectionMatrixOrthoLH(1.65, 1.65, 0, 100);
camera->setProjectionMatrix(pm, true);
/*scene::ILightSceneNode *light =*/ smgr->addLightSceneNode(0,
v3f(-50, 100, 0), video::SColorf(0.5,0.5,0.5), 1000);
smgr->setAmbientLight(video::SColorf(0.2,0.2,0.2));
// Render scene
driver->beginScene(true, true, video::SColor(0,0,0,0));
smgr->drawAll();
driver->endScene();
// NOTE: The scene nodes should not be dropped, otherwise
// smgr->drop() segfaults
/*cube->drop();
camera->drop();
light->drop();*/
// Drop scene manager
smgr->drop();
// Unset render target
driver->setRenderTarget(0, true, true, 0);
//TODO: Free textures of images
driver->removeTexture(texture_top);
// Create image of render target
video::IImage *image = driver->createImage(rtt, v2s32(0,0), dim);
assert(image);
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
if(image)
{
image->copyTo(baseimg);
image->drop();
}
#endif
}
else
{
infostream<<"generate_image(): Invalid "
" modification: \""<<part_of_name<<"\""<<std::endl;
}
}
return true;
}
void LightTree::sample(LightQuery* query) const {
const Node* node = &(nodes[0]);
float tot_prob = 1.0f;
// Traverse down the tree, keeping track of the relative probabilities
while (!node->is_leaf) {
// Calculate the relative probabilities of the two children
float p1 = node_prob(*query, node->index1);
float p2 = node_prob(*query, node->index2);
const float total = p1 + p2;
if (total <= 0.0f) {
p1 = 0.5f;
p2 = 0.5f;
} else {
p1 /= total;
p2 /= total;
}
if (query->n <= p1) {
tot_prob *= p1;
node = &(nodes[node->index1]);
query->n /= p1;
} else {
tot_prob *= p2;
node = &(nodes[node->index2]);
query->n = (query->n - p1) / p2;
}
}
// Instance shorthand
const Instance& instance = assembly->instances[node->instance_index];
// Push the instance index onto the ID
query->id.push_back(node->instance_index, assembly->element_id_bits());
// Get transforms if any
if (instance.transform_count > 0) {
auto cbegin = assembly->xforms.cbegin() + instance.transform_index;
auto cend = cbegin + instance.transform_count;
auto instance_xform = lerp_seq(query->time, cbegin, cend);
query->pos = instance_xform.pos_to(query->pos);
query->nor = instance_xform.nor_to(query->nor).normalized();
query->xform *= instance_xform;
}
// Do light sampling
if (instance.type == Instance::OBJECT) {
const Object* obj = assembly->objects[instance.data_index].get(); // Shorthand
if (obj->get_type() == Object::LIGHT) {
const Light* light = dynamic_cast<const Light*>(obj);
float p = 1.0f;
query->spec_samp = light->sample(query->pos, query->u, query->v, query->wavelength, query->time, &(query->to_light), &p);
query->to_light = query->xform.dir_from(query->to_light);
query->selection_pdf *= (tot_prob * light_count());
query->light_sample_pdf = p;
}
// TODO: handle non-light objects that emit light
} else if (instance.type == Instance::ASSEMBLY) {
const Assembly* asmb = assembly->assemblies[instance.data_index].get(); // Shorthand
query->selection_pdf *= (tot_prob * light_count()) / asmb->light_accel.light_count();
asmb->light_accel.sample(query);
}
}
