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84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
// Residual - Virtual machine to run LucasArts' 3D adventure games
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// Copyright (C) 2003 The ScummVM-Residual Team (www.scummvm.org)
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include "stdafx.h"
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#include "material.h"
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#include "colormap.h"
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#include "bits.h"
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#include "debug.h"
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Material::Material(const char *filename, const char *data, int len,
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const CMap &cmap) :
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Resource(filename)
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{
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if (len < 4 || memcmp(data, "MAT ", 4) != 0)
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error("invalid magic loading texture\n");
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num_images_ = READ_LE_UINT32(data + 12);
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curr_image_ = 0;
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textures_ = new GLuint[num_images_];
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glGenTextures(num_images_, textures_);
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width_ = READ_LE_UINT32(data + 76 + num_images_ * 40);
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height_ = READ_LE_UINT32(data + 80 + num_images_ * 40);
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if ((width_ == 0) || (height_ == 0)) {
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warning("bad texture size (%dx%d) for texture %s\n", width_, height_, filename);
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}
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data += 100 + num_images_ * 40;
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char *texdata = new char[width_ * height_ * 4];
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for (int i = 0; i < num_images_; i++) {
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char *texdatapos = texdata;
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for (int y = 0; y < height_; y++) {
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for (int x = 0; x < width_; x++) {
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int col = *(uint8 *)(data);
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if (col == 0)
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memset(texdatapos, 0, 4); // transparent
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else {
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memcpy(texdatapos, cmap.colors + 3 * *(uint8 *)(data), 3);
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texdatapos[3] = '\xff'; // fully opaque
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}
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texdatapos += 4;
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data++;
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}
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}
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glBindTexture(GL_TEXTURE_2D, textures_[i]);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width_, height_, 0,
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GL_RGBA, GL_UNSIGNED_BYTE, texdata);
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data += 24;
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}
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delete[] texdata;
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}
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void Material::select() const {
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glBindTexture(GL_TEXTURE_2D, textures_[curr_image_]);
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glMatrixMode(GL_TEXTURE);
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glLoadIdentity();
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glScalef(1.0f / width_, 1.0f / height_, 1);
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}
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Material::~Material() {
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glDeleteTextures(num_images_, textures_);
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delete[] textures_;
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}
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