void Renderer::draw()
{
//int dw = al_get_display_width(dpy_);
//int dh = al_get_display_height(dpy_);
ALLEGRO_TRANSFORM trans;
al_identity_transform(&trans);
al_compose_transform(&trans, &camera_transform_);
al_rotate_transform_3d(&trans, 1.0, 0.0, 0.0, rx_look);
setupProjection(&trans);
al_identity_transform(&trans);
al_use_transform(&trans);
getWorldPos(camera_pos_);
al_copy_transform(&cur3d_transform_, al_get_current_transform());
glEnable(GL_DEPTH_TEST);
// Accept fragment if it closer to the camera than the former one
glDepthFunc(GL_LEQUAL);
glEnable(GL_CULL_FACE);
glFrontFace(GL_CCW);
glEnable(GL_ALPHA_TEST);
if(!setShader(SHADER_DEFAULT))
{
NBT_Debug("failed to set default shader");
}
glBindVertexArray(vao_);
resManager_->setAtlasUniforms();
for(auto &it: chunkData_)
{
ChunkData *cd = it.second;
ALLEGRO_TRANSFORM ctrans;
al_identity_transform(&ctrans);
al_translate_transform_3d(&ctrans, cd->x()*15.0, 0.0, cd->z()*15.0);
al_use_transform(&ctrans);
cd->draw(&ctrans);
}
glBindVertexArray(0);
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
//drawSelection();
resManager_->unsetAtlasUniforms();
}
ChunkData *ChunkData::Create(Chunk *chunk, ResourceManager *resourceManager)
{
const uint32_t DATA_VTX_COUNT = MAX_VERTS / MAX_SLICES;
CustomVertex *data = (CustomVertex*)malloc(sizeof(CustomVertex) * DATA_VTX_COUNT);
if(!data)
return nullptr;
memset(data, 0, DATA_VTX_COUNT * sizeof(CustomVertex));
uint32_t total_size = 0;
// TODO: maybe allow putting more than one section per slice if we end up with more than 16 sections.
// currently minecraft only uses 16 sections per chunk.
//assert(num_sections <= MAX_SLICES);
int32_t x_off = chunk->x() * 16;
int32_t z_off = chunk->z() * 16;
ChunkData *cdata = new ChunkData(chunk->x(), chunk->z());
CustomVertex *dptr = data; // reset dptr, reuse data memory.
for(uint32_t i = 0; i < chunk->sectionCount(); i++)
{
ChunkSection *section = chunk->getSection(i);
if(!section)
continue;
//NBT_Debug("new section[%i]: %p", i, section);
int32_t y = section->y() * 16;
//int32_t y = section_y * 16;
#ifdef VIEWER_USE_MORE_VBOS
dptr = data;
total_size = 0;
#endif
for(int dy = 0; dy < 16; dy++)
{
for(int dz = 0; dz < 16; dz++)
{
for(int dx = 0; dx < 16; dx++)
{
BlockAddress baddr;
if(!chunk->getBlockAddress(x_off + dx, y + dy, z_off + dz, &baddr))
{
NBT_Debug("failed to find block %i, %i, %i", x_off + dx, y + dy, z_off + dz);
assert(nullptr);
continue;
}
//NBT_Debug("block %i,%i,%i: %s", x_off+dx, y+dy, z_off+dz, baddr.toString().c_str());
BlockInfo bi;
chunk->getBlockInfo(baddr, &bi);
//NBT_Debug("blockInfo: %i:%i:%s", bi.id, bi.data, bi.state_name);
Resource::ID rid = resourceManager->getModelVariant(bi);
if(rid == Resource::INVALID_ID)
{
//NBT_Debug("failed to get model %i:%i:%s", bi.id, bi.data, bi.state_name);
continue;
}
//if(bi.id != BLOCK_AIR && bi.id != BLOCK_BARRIER)
// NBT_Debug("block:%i:%i %s", bi.id, bi.data, bi.state_name);
ResourceModelVariant *var = resourceManager->getModelVariantResource(rid);
uint32_t vertex_count = var->getVertexCount();
CustomVertex *verticies = var->getVertexData();
for(uint32_t i = 0; i < vertex_count; i++)
{
CustomVertex &v = verticies[i], &cv = dptr[i];
float xoff = cdata->x() + dx, yoff = y + dy, zoff = cdata->z() + dz;
cv.pos = { v.pos.f1 + xoff, v.pos.f2 + yoff, v.pos.f3 + zoff };
//cv.txcoord = { (v.txcoord.f1 * tx_xfact + tx_x), 1-(v.txcoord.f2 * tx_yfact + tx_y) };
cv.txcoord = { v.txcoord.f1 , 1-v.txcoord.f2 };
// { 0.25 + 0.25 * v.txcoord.f1, 0.25 + 0.25 * v.txcoord.f2 };
//NBT_Debug("tex: %f, %f", cv.txcoord.f1, cv.txcoord.f2);
cv.tx_page = v.tx_page;
cv.color = v.color;
}
dptr += vertex_count;
total_size += vertex_count;
}
}
}
#ifdef VIEWER_USE_MORE_VBOS
if(total_size > 0)
if(!cdata->fillSlice(section->y(), data, total_size))
NBT_Warn("failed to fill slice %i???", y);
#endif
}
#ifndef VIEWER_USE_MORE_VBOS
if(total_size)
if(!cdata->fillSlice(0, data, total_size))
NBT_Warn("failed to fill chunk data");
#endif
free(data);
return cdata;
}