1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365
|
/* Copyright (C) 2018 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "TerrainTextureEntry.h"
#include "lib/utf8.h"
#include "lib/ogl.h"
#include "lib/allocators/shared_ptr.h"
#include "lib/res/graphics/ogl_tex.h"
#include "ps/CLogger.h"
#include "ps/Filesystem.h"
#include "ps/XML/Xeromyces.h"
#include "graphics/MaterialManager.h"
#include "graphics/Terrain.h"
#include "graphics/TerrainTextureManager.h"
#include "graphics/TerrainProperties.h"
#include "graphics/Texture.h"
#include "renderer/Renderer.h"
#include <map>
CTerrainTextureEntry::CTerrainTextureEntry(CTerrainPropertiesPtr properties, const VfsPath& path):
m_pProperties(properties),
m_BaseColor(0),
m_BaseColorValid(false)
{
ENSURE(properties);
CXeromyces XeroFile;
if (XeroFile.Load(g_VFS, path, "terrain_texture") != PSRETURN_OK)
{
LOGERROR("Terrain xml not found (%s)", path.string8());
return;
}
#define EL(x) int el_##x = XeroFile.GetElementID(#x)
#define AT(x) int at_##x = XeroFile.GetAttributeID(#x)
EL(tag);
EL(terrain);
EL(texture);
EL(textures);
EL(material);
EL(props);
EL(alphamap);
AT(file);
AT(name);
#undef AT
#undef EL
XMBElement root = XeroFile.GetRoot();
if (root.GetNodeName() != el_terrain)
{
LOGERROR("Invalid terrain format (unrecognised root element '%s')", XeroFile.GetElementString(root.GetNodeName()).c_str());
return;
}
std::vector<std::pair<CStr, VfsPath> > samplers;
VfsPath alphamap("standard");
m_Tag = utf8_from_wstring(path.Basename().string());
XERO_ITER_EL(root, child)
{
int child_name = child.GetNodeName();
if (child_name == el_textures)
{
XERO_ITER_EL(child, textures_element)
{
ENSURE(textures_element.GetNodeName() == el_texture);
CStr name;
VfsPath terrainTexturePath;
XERO_ITER_ATTR(textures_element, relativePath)
{
if (relativePath.Name == at_file)
terrainTexturePath = VfsPath("art/textures/terrain") / relativePath.Value.FromUTF8();
else if (relativePath.Name == at_name)
name = relativePath.Value;
}
samplers.emplace_back(name, terrainTexturePath);
}
}
else if (child_name == el_material)
{
VfsPath mat = VfsPath("art/materials") / child.GetText().FromUTF8();
if (CRenderer::IsInitialised())
m_Material = g_Renderer.GetMaterialManager().LoadMaterial(mat);
}
else if (child_name == el_alphamap)
{
alphamap = child.GetText().FromUTF8();
}
else if (child_name == el_props)
{
CTerrainPropertiesPtr ret (new CTerrainProperties(properties));
ret->LoadXml(child, &XeroFile, path);
if (ret) m_pProperties = ret;
}
else if (child_name == el_tag)
{
m_Tag = child.GetText();
}
}
for (size_t i = 0; i < samplers.size(); ++i)
{
CTextureProperties texture(samplers[i].second);
texture.SetWrap(GL_REPEAT);
// TODO: anisotropy should probably be user-configurable, but we want it to be
// at least 2 for terrain else the ground looks very blurry when you tilt the
// camera upwards
texture.SetMaxAnisotropy(2.0f);
if (CRenderer::IsInitialised())
{
CTexturePtr texptr = g_Renderer.GetTextureManager().CreateTexture(texture);
m_Material.AddSampler(CMaterial::TextureSampler(samplers[i].first, texptr));
}
}
if (CRenderer::IsInitialised())
LoadAlphaMaps(alphamap);
float texAngle = 0.f;
float texSize = 1.f;
if (m_pProperties)
{
m_Groups = m_pProperties->GetGroups();
texAngle = m_pProperties->GetTextureAngle();
texSize = m_pProperties->GetTextureSize();
}
m_TextureMatrix.SetZero();
m_TextureMatrix._11 = cosf(texAngle) / texSize;
m_TextureMatrix._13 = -sinf(texAngle) / texSize;
m_TextureMatrix._21 = -sinf(texAngle) / texSize;
m_TextureMatrix._23 = -cosf(texAngle) / texSize;
m_TextureMatrix._44 = 1.f;
GroupVector::iterator it=m_Groups.begin();
for (;it!=m_Groups.end();++it)
(*it)->AddTerrain(this);
}
CTerrainTextureEntry::~CTerrainTextureEntry()
{
for (GroupVector::iterator it=m_Groups.begin();it!=m_Groups.end();++it)
(*it)->RemoveTerrain(this);
}
// BuildBaseColor: calculate the root color of the texture, used for coloring minimap, and store
// in m_BaseColor member
void CTerrainTextureEntry::BuildBaseColor()
{
// Use the explicit properties value if possible
if (m_pProperties && m_pProperties->HasBaseColor())
{
m_BaseColor=m_pProperties->GetBaseColor();
m_BaseColorValid = true;
return;
}
// Use the texture color if available
if (GetTexture()->TryLoad())
{
m_BaseColor = GetTexture()->GetBaseColor();
m_BaseColorValid = true;
}
}
const float* CTerrainTextureEntry::GetTextureMatrix()
{
return &m_TextureMatrix._11;
}
// LoadAlphaMaps: load the 14 default alpha maps, pack them into one composite texture and
// calculate the coordinate of each alphamap within this packed texture
void CTerrainTextureEntry::LoadAlphaMaps(VfsPath &amtype)
{
std::wstring key = L"(alpha map composite" + amtype.string() + L")";
CTerrainTextureManager::TerrainAlphaMap::iterator it = g_TexMan.m_TerrainAlphas.find(amtype);
if (it != g_TexMan.m_TerrainAlphas.end())
{
m_TerrainAlpha = it;
return;
}
g_TexMan.m_TerrainAlphas[amtype] = TerrainAlpha();
it = g_TexMan.m_TerrainAlphas.find(amtype);
TerrainAlpha &result = it->second;
//
// load all textures and store Handle in array
//
Handle textures[NUM_ALPHA_MAPS] = {0};
VfsPath path(L"art/textures/terrain/alphamaps");
path = path / amtype;
const wchar_t* fnames[NUM_ALPHA_MAPS] = {
L"blendcircle.png",
L"blendlshape.png",
L"blendedge.png",
L"blendedgecorner.png",
L"blendedgetwocorners.png",
L"blendfourcorners.png",
L"blendtwooppositecorners.png",
L"blendlshapecorner.png",
L"blendtwocorners.png",
L"blendcorner.png",
L"blendtwoedges.png",
L"blendthreecorners.png",
L"blendushape.png",
L"blendbad.png"
};
size_t base = 0; // texture width/height (see below)
// for convenience, we require all alpha maps to be of the same BPP
// (avoids another ogl_tex_get_size call, and doesn't hurt)
size_t bpp = 0;
for(size_t i=0;i<NUM_ALPHA_MAPS;i++)
{
// note: these individual textures can be discarded afterwards;
// we cache the composite.
textures[i] = ogl_tex_load(g_VFS, path / fnames[i]);
if (textures[i] < 0)
{
g_TexMan.m_TerrainAlphas.erase(it);
LOGERROR("Failed to load alphamap: %s", amtype.string8());
VfsPath standard("standard");
if (path != standard)
{
LoadAlphaMaps(standard);
}
return;
}
// get its size and make sure they are all equal.
// (the packing algo assumes this)
size_t this_width = 0, this_height = 0, this_bpp = 0; // fail-safe
(void)ogl_tex_get_size(textures[i], &this_width, &this_height, &this_bpp);
if(this_width != this_height)
DEBUG_DISPLAY_ERROR(L"Alpha maps are not square");
// .. first iteration: establish size
if(i == 0)
{
base = this_width;
bpp = this_bpp;
}
// .. not first: make sure texture size matches
else if(base != this_width || bpp != this_bpp)
DEBUG_DISPLAY_ERROR(L"Alpha maps are not identically sized (including pixel depth)");
}
//
// copy each alpha map (tile) into one buffer, arrayed horizontally.
//
size_t tile_w = 2+base+2; // 2 pixel border (avoids bilinear filtering artifacts)
size_t total_w = round_up_to_pow2(tile_w * NUM_ALPHA_MAPS);
size_t total_h = base; ENSURE(is_pow2(total_h));
shared_ptr<u8> data;
AllocateAligned(data, total_w*total_h, maxSectorSize);
// for each tile on row
for (size_t i = 0; i < NUM_ALPHA_MAPS; i++)
{
// get src of copy
u8* src = 0;
(void)ogl_tex_get_data(textures[i], &src);
size_t srcstep = bpp/8;
// get destination of copy
u8* dst = data.get() + (i*tile_w);
// for each row of image
for (size_t j = 0; j < base; j++)
{
// duplicate first pixel
*dst++ = *src;
*dst++ = *src;
// copy a row
for (size_t k = 0; k < base; k++)
{
*dst++ = *src;
src += srcstep;
}
// duplicate last pixel
*dst++ = *(src-srcstep);
*dst++ = *(src-srcstep);
// advance write pointer for next row
dst += total_w-tile_w;
}
result.m_AlphaMapCoords[i].u0 = float(i*tile_w+2) / float(total_w);
result.m_AlphaMapCoords[i].u1 = float((i+1)*tile_w-2) / float(total_w);
result.m_AlphaMapCoords[i].v0 = 0.0f;
result.m_AlphaMapCoords[i].v1 = 1.0f;
}
for (size_t i = 0; i < NUM_ALPHA_MAPS; i++)
(void)ogl_tex_free(textures[i]);
// upload the composite texture
Tex t;
(void)t.wrap(total_w, total_h, 8, TEX_GREY, data, 0);
// uncomment the following to save a png of the generated texture
// in the public/ directory, for debugging
/*VfsPath filename("blendtex.png");
DynArray da;
RETURN_STATUS_IF_ERR(tex_encode(&t, filename.Extension(), &da));
// write to disk
//Status ret = INFO::OK;
{
shared_ptr<u8> file = DummySharedPtr(da.base);
const ssize_t bytes_written = g_VFS->CreateFile(filename, file, da.pos);
if(bytes_written > 0)
ENSURE(bytes_written == (ssize_t)da.pos);
//else
// ret = (Status)bytes_written;
}
(void)da_free(&da);*/
Handle hCompositeAlphaMap = ogl_tex_wrap(&t, g_VFS, key);
(void)ogl_tex_set_filter(hCompositeAlphaMap, GL_LINEAR);
(void)ogl_tex_set_wrap (hCompositeAlphaMap, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
ogl_tex_upload(hCompositeAlphaMap, GL_ALPHA, 0, 0);
result.m_hCompositeAlphaMap = hCompositeAlphaMap;
m_TerrainAlpha = it;
}
|