150 lines
4.1 KiB
C++
150 lines
4.1 KiB
C++
/* ResidualVM - A 3D game interpreter
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*
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* ResidualVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the AUTHORS
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "engines/stark/texture.h"
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#include "common/stream.h"
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#include "common/str.h"
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#include <SDL_opengl.h> // HACK: I just want to see something - ideally we get _gfx from _scene
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namespace Stark {
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Texture::Texture() : _palette(NULL) {
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}
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Texture::~Texture() {
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if (_palette)
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delete[] _palette;
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for (Common::HashMap<Common::String, uint32>::iterator it = _texMap.begin(); it != _texMap.end(); ++it)
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glDeleteTextures(1, &it->_value);
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}
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void Texture::createFromStream(Common::ReadStream *stream) {
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uint32 id = stream->readUint32LE();
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uint32 format = stream->readUint32LE();
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uint32 u1 = stream->readUint32LE();
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uint32 u2 = stream->readUint32LE();
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uint32 len = stream->readUint32LE();
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for (uint32 i = 0; i < len; ++i) {
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readChunk(stream, format);
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}
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}
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void Texture::readChunk(Common::ReadStream *stream, uint32 format) {
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uint32 marker = stream->readUint32LE();
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if (marker != 0xf0f0f0f0) {
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error("Wrong magic while reading texture");
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}
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uint32 type = stream->readUint32LE();
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uint32 u3 = stream->readUint32LE();
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uint32 size = stream->readUint32LE();
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if (format == 2)
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uint u4 = stream->readUint32LE();
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if (type == 0x02faf082) {
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// Palette
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if (_palette)
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delete[] _palette;
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int entries = stream->readUint32LE();
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_palette = new uint32[entries * 3];
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byte *ptr = (byte *)_palette;
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for (int i = 0; i < entries; ++i) {
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*ptr++ = (byte)stream->readUint16LE();
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*ptr++ = (byte)stream->readUint16LE();
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*ptr++ = (byte)stream->readUint16LE();
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*ptr++ = 0xff;
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}
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} else if (type == 0x02faf080) {
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// Img
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uint16 nameLength = stream->readUint16LE();
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char *name = new char[nameLength];
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stream->read(name, nameLength);
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Common::String nameStr = Common::String(name, nameLength);
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delete[] name;
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byte u = stream->readByte();
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uint32 texIdx;
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glGenTextures(1, &texIdx);
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_texMap.setVal(nameStr, texIdx);
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glBindTexture(GL_TEXTURE_2D, texIdx);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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uint32 w = stream->readUint32LE();
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uint32 h = stream->readUint32LE();
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int levels = stream->readUint32LE();
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for (int i = 0; i < levels; ++i) {
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uint32 *img = new uint32[w * h];
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for (uint32 j = 0; j < w * h; ++j)
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img[j] = _palette[stream->readByte()];
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glTexImage2D(GL_TEXTURE_2D, i, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, img);
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delete[] img;
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w /= 2;
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h /= 2;
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}
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, levels - 1);
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} else {
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byte *data = new byte[size];
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stream->read(data, size);
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delete[] data;
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}
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marker = stream->readUint32LE();
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if (marker != 0x0f0f0f0f) {
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error("Wrong magic while reading texture");
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}
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uint32 len = stream->readUint32LE();
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for (uint32 i = 0; i < len; ++i) {
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readChunk(stream, format);
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}
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}
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uint32 Texture::getTexture(Common::String name) const {
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Common::HashMap<Common::String, uint32>::const_iterator it = _texMap.find(name);
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if (it != _texMap.end())
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return it->_value;
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return 0;
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}
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} // End of namespace Stark
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