Ykkrosh
11a20e1bcf
Simplify terrain code (remove Handle indirection). Delete unused terrain properties. This was SVN commit r7590.
117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
/* Copyright (C) 2010 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include <map>
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#include "lib/ogl.h"
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#include "lib/res/graphics/ogl_tex.h"
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#include "ps/CLogger.h"
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#include "TextureEntry.h"
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#include "TextureManager.h"
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#include "TerrainProperties.h"
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#include "Texture.h"
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#include "renderer/Renderer.h"
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#define LOG_CATEGORY L"graphics"
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/////////////////////////////////////////////////////////////////////////////////////
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// CTextureEntry constructor
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CTextureEntry::CTextureEntry(CTerrainPropertiesPtr props, const VfsPath& path):
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m_pProperties(props),
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m_Handle(-1),
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m_BaseColor(0),
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m_BaseColorValid(false),
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m_TexturePath(path)
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{
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if (m_pProperties)
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m_Groups = m_pProperties->GetGroups();
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GroupVector::iterator it=m_Groups.begin();
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for (;it!=m_Groups.end();++it)
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(*it)->AddTerrain(this);
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m_Tag = fs::basename(m_TexturePath);
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}
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/////////////////////////////////////////////////////////////////////////////////////
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// CTextureEntry destructor
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CTextureEntry::~CTextureEntry()
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{
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if (m_Handle > 0)
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(void)ogl_tex_free(m_Handle);
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for (GroupVector::iterator it=m_Groups.begin();it!=m_Groups.end();++it)
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(*it)->RemoveTerrain(this);
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}
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/////////////////////////////////////////////////////////////////////////////////////
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// LoadTexture: actually load the texture resource from file
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void CTextureEntry::LoadTexture()
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{
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CTexture texture(m_TexturePath);
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if (g_Renderer.LoadTexture(&texture,GL_REPEAT)) {
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m_Handle=texture.GetHandle();
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} else {
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m_Handle=0;
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// BuildBaseColor: calculate the root colour of the texture, used for coloring minimap, and store
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// in m_BaseColor member
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void CTextureEntry::BuildBaseColor()
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{
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if (m_pProperties && m_pProperties->HasBaseColor())
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{
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m_BaseColor=m_pProperties->GetBaseColor();
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m_BaseColorValid=true;
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return;
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}
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LibError ret = ogl_tex_bind(GetHandle());
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debug_assert(ret == INFO::OK);
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// get root colour for coloring minimap by querying root level of the texture
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// (this should decompress any compressed textures for us),
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// then scaling it down to a 1x1 size
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// - an alternative approach of just grabbing the top level of the mipmap tree fails
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// (or gives an incorrect colour) in some cases:
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// - suspect bug on Radeon cards when SGIS_generate_mipmap is used
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// - any textures without mipmaps
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// we'll just take the basic approach here.
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//
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// jw: this is horribly inefficient (taking 750ms for 10 texture types),
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// but it is no longer called, since terrain XML files are supposed to
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// include a minimap color attribute. therefore, leave it as-is.
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GLint width,height;
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glGetTexLevelParameteriv(GL_TEXTURE_2D,0,GL_TEXTURE_WIDTH,&width);
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glGetTexLevelParameteriv(GL_TEXTURE_2D,0,GL_TEXTURE_HEIGHT,&height);
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unsigned char* buf=new unsigned char[width*height*4];
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glGetTexImage(GL_TEXTURE_2D,0,GL_BGRA_EXT,GL_UNSIGNED_BYTE,buf);
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gluScaleImage(GL_BGRA_EXT,width,height,GL_UNSIGNED_BYTE,buf,
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1,1,GL_UNSIGNED_BYTE,&m_BaseColor);
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delete[] buf;
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m_BaseColorValid=true;
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}
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