root / rgbdslam / external / siftgpu / src / SiftGPU / GLTexImage.cpp @ 9240aaa3
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////////////////////////////////////////////////////////////////////////////
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// File: GLTexImage.cpp
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// Author: Changchang Wu
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// Description : implementation of the GLTexImage class.
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//
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//
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//
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// Copyright (c) 2007 University of North Carolina at Chapel Hill
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// All Rights Reserved
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//
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// Permission to use, copy, modify and distribute this software and its
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// documentation for educational, research and non-profit purposes, without
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// fee, and without a written agreement is hereby granted, provided that the
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// above copyright notice and the following paragraph appear in all copies.
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//
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// The University of North Carolina at Chapel Hill make no representations
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// about the suitability of this software for any purpose. It is provided
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// 'as is' without express or implied warranty.
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//
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// Please send BUG REPORTS to ccwu@cs.unc.edu
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//
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////////////////////////////////////////////////////////////////////////////
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#include "GL/glew.h" |
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#include <stdio.h> |
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#include <iostream> |
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#include <vector> |
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#include <algorithm> |
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#include <stdlib.h> |
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#include <math.h> |
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using namespace std; |
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#include "GlobalUtil.h" |
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#include "GLTexImage.h" |
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#include "FrameBufferObject.h" |
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#include "ShaderMan.h" |
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#ifndef SIFTGPU_NO_DEVIL
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#include "IL/il.h" |
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#if defined(_WIN64)
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#pragma comment(lib, "../../lib/DevIL64.lib") |
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#elif defined(_WIN32)
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#pragma comment(lib, "../../lib/DevIL.lib") |
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#endif
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#endif
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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GLTexImage::GLTexImage() |
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{ |
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_imgWidth = _imgHeight = 0;
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_texWidth = _texHeight = 0;
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_drawWidth = _drawHeight = 0;
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_texID = 0;
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} |
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GLTexImage::~GLTexImage() |
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{ |
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if(_texID) glDeleteTextures(1, &_texID); |
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} |
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int GLTexImage::CheckTexture()
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{ |
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if(_texID)
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{ |
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GLint tw, th; |
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BindTex(); |
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glGetTexLevelParameteriv(_texTarget, 0, GL_TEXTURE_WIDTH , &tw);
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glGetTexLevelParameteriv(_texTarget, 0, GL_TEXTURE_HEIGHT , &th);
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UnbindTex(); |
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return tw == _texWidth && th == _texHeight;
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}else
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{ |
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return _texWidth == 0 && _texHeight ==0; |
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} |
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} |
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//set a dimension that is smaller than the actuall size
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//for drawQuad
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void GLTexImage::SetImageSize( int width, int height) |
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{ |
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_drawWidth = _imgWidth = width; |
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_drawHeight = _imgHeight = height; |
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} |
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void GLTexImage::InitTexture( int width, int height, int clamp_to_edge) |
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{ |
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if(_texID && width == _texWidth && height == _texHeight ) return; |
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if(_texID==0) glGenTextures(1, &_texID); |
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_texWidth = _imgWidth = _drawWidth = width; |
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_texHeight = _imgHeight = _drawHeight = height; |
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BindTex(); |
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if(clamp_to_edge)
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{ |
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
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}else
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{ |
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//out of bound tex read returns 0??
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); |
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); |
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} |
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glTexParameteri(_texTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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glTexParameteri(_texTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
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glTexImage2D(_texTarget, 0, _iTexFormat,
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_texWidth, _texHeight, 0, GL_RGBA, GL_FLOAT, NULL); |
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CheckErrorsGL("glTexImage2D");
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UnbindTex(); |
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} |
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void GLTexImage::InitTexture( int width, int height, int clamp_to_edge, GLuint format) |
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{ |
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if(_texID && width == _texWidth && height == _texHeight ) return; |
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if(_texID==0) glGenTextures(1, &_texID); |
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_texWidth = _imgWidth = _drawWidth = width; |
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_texHeight = _imgHeight = _drawHeight = height; |
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BindTex(); |
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if(clamp_to_edge)
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{ |
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
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}else
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{ |
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//out of bound tex read returns 0??
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); |
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glTexParameteri (_texTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); |
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} |
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glTexParameteri(_texTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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glTexParameteri(_texTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
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glTexImage2D(_texTarget, 0, format, _texWidth, _texHeight, 0, GL_RGBA, GL_FLOAT, NULL); |
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UnbindTex(); |
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} |
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void GLTexImage::BindTex()
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{ |
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glBindTexture(_texTarget, _texID); |
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} |
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void GLTexImage::UnbindTex()
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{ |
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glBindTexture(_texTarget, 0);
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} |
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void GLTexImage::DrawQuad()
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{ |
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glBegin (GL_QUADS); |
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glTexCoord2i ( 0 , 0 ); glVertex2i ( 0 , 0 ); |
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glTexCoord2i ( 0 , _drawHeight ); glVertex2i ( 0 , _drawHeight ); |
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glTexCoord2i ( _drawWidth , _drawHeight ); glVertex2i ( _drawWidth , _drawHeight ); |
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glTexCoord2i ( _drawWidth , 0 ); glVertex2i ( _drawWidth , 0 ); |
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glEnd (); |
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glFlush(); |
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} |
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void GLTexImage::FillMargin(int marginx, int marginy) |
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{ |
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//
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marginx = min(marginx, _texWidth - _imgWidth); |
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marginy = min(marginy, _texHeight - _imgHeight); |
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if(marginx >0 || marginy > 0) |
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{ |
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GlobalUtil::FitViewPort(_imgWidth + marginx, _imgHeight + marginy); |
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AttachToFBO(0);
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BindTex(); |
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ShaderMan::UseShaderMarginCopy(_imgWidth, _imgHeight); |
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DrawMargin(_imgWidth + marginx, _imgHeight + marginy); |
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} |
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} |
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void GLTexImage::ZeroHistoMargin()
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{ |
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ZeroHistoMargin(_imgWidth, _imgHeight); |
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} |
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void GLTexImage::ZeroHistoMargin(int width, int height) |
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{ |
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int marginx = width & 0x01; |
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int marginy = height & 0x01; |
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if(marginx >0 || marginy > 0) |
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{ |
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int right = width + marginx;
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int bottom = height + marginy;
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GlobalUtil::FitViewPort(right, bottom); |
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AttachToFBO(0);
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ShaderMan::UseShaderZeroPass(); |
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glBegin(GL_QUADS); |
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if(right > width && _texWidth > width)
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{ |
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glTexCoord2i ( width , 0 ); glVertex2i ( width , 0 ); |
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glTexCoord2i ( width , bottom ); glVertex2i ( width , bottom ); |
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glTexCoord2i ( right , bottom ); glVertex2i ( right , bottom ); |
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glTexCoord2i ( right , 0 ); glVertex2i ( right , 0 ); |
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} |
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if(bottom>height && _texHeight > height)
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{ |
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glTexCoord2i ( 0 , height ); glVertex2i ( 0 , height ); |
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glTexCoord2i ( 0 , bottom ); glVertex2i ( 0 , bottom ); |
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glTexCoord2i ( width , bottom ); glVertex2i ( width , bottom ); |
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glTexCoord2i ( width , height ); glVertex2i ( width , height ); |
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} |
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glEnd(); |
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glFlush(); |
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} |
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} |
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void GLTexImage::DrawMargin(int right, int bottom) |
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{ |
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glBegin(GL_QUADS); |
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if(right > _drawWidth)
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{ |
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glTexCoord2i ( _drawWidth , 0 ); glVertex2i ( _drawWidth , 0 ); |
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glTexCoord2i ( _drawWidth , bottom ); glVertex2i ( _drawWidth , bottom ); |
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glTexCoord2i ( right , bottom ); glVertex2i ( right , bottom ); |
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glTexCoord2i ( right , 0 ); glVertex2i ( right , 0 ); |
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} |
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if(bottom>_drawHeight)
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{ |
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glTexCoord2i ( 0 , _drawHeight ); glVertex2i ( 0 , _drawHeight ); |
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glTexCoord2i ( 0 , bottom ); glVertex2i ( 0 , bottom ); |
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glTexCoord2i ( _drawWidth , bottom ); glVertex2i ( _drawWidth , bottom ); |
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glTexCoord2i ( _drawWidth , _drawHeight ); glVertex2i ( _drawWidth , _drawHeight ); |
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} |
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glEnd(); |
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glFlush(); |
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} |
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void GLTexImage::DrawQuadMT4()
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{ |
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int w = _drawWidth, h = _drawHeight;
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glBegin (GL_QUADS); |
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glMultiTexCoord2i( GL_TEXTURE0, 0 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE1, -1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE2, 1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE3, 0 , -1 ); |
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glMultiTexCoord2i( GL_TEXTURE4, 0 , 1 ); |
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glVertex2i ( 0 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE0, 0 , h );
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glMultiTexCoord2i( GL_TEXTURE1, -1 , h );
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glMultiTexCoord2i( GL_TEXTURE2, 1 , h );
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glMultiTexCoord2i( GL_TEXTURE3, 0 , h -1 ); |
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glMultiTexCoord2i( GL_TEXTURE4, 0 , h +1 ); |
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glVertex2i ( 0 , h );
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glMultiTexCoord2i( GL_TEXTURE0, w , h ); |
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glMultiTexCoord2i( GL_TEXTURE1, w-1 , h );
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glMultiTexCoord2i( GL_TEXTURE2, w+1 , h );
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glMultiTexCoord2i( GL_TEXTURE3, w , h-1 );
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glMultiTexCoord2i( GL_TEXTURE4, w , h+1 );
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glVertex2i ( w , h ); |
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glMultiTexCoord2i( GL_TEXTURE0, w , 0 );
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glMultiTexCoord2i( GL_TEXTURE1, w-1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE2, w+1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE3, w , -1 );
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glMultiTexCoord2i( GL_TEXTURE4, w , 1 );
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glVertex2i ( w , 0 );
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glEnd (); |
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glFlush(); |
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} |
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void GLTexImage::DrawQuadMT8()
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{ |
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int w = _drawWidth;
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int h = _drawHeight;
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glBegin (GL_QUADS); |
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glMultiTexCoord2i( GL_TEXTURE0, 0 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE1, -1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE2, 1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE3, 0 , -1 ); |
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glMultiTexCoord2i( GL_TEXTURE4, 0 , 1 ); |
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glMultiTexCoord2i( GL_TEXTURE5, -1 , -1 ); |
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glMultiTexCoord2i( GL_TEXTURE6, -1 , 1 ); |
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glMultiTexCoord2i( GL_TEXTURE7, 1 , -1 ); |
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glVertex2i ( 0 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE0, 0 , h );
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glMultiTexCoord2i( GL_TEXTURE1, -1 , h );
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glMultiTexCoord2i( GL_TEXTURE2, 1 , h );
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glMultiTexCoord2i( GL_TEXTURE3, 0 , h -1 ); |
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glMultiTexCoord2i( GL_TEXTURE4, 0 , h +1 ); |
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glMultiTexCoord2i( GL_TEXTURE5, -1 , h -1 ); |
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glMultiTexCoord2i( GL_TEXTURE6, -1 , h +1 ); |
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glMultiTexCoord2i( GL_TEXTURE7, 1 , h -1 ); |
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glVertex2i ( 0 , h );
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glMultiTexCoord2i( GL_TEXTURE0, w , h ); |
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glMultiTexCoord2i( GL_TEXTURE1, w-1 , h );
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glMultiTexCoord2i( GL_TEXTURE2, w+1 , h );
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glMultiTexCoord2i( GL_TEXTURE3, w , h -1 );
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glMultiTexCoord2i( GL_TEXTURE4, w , h +1 );
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glMultiTexCoord2i( GL_TEXTURE5, w-1 , h -1 ); |
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glMultiTexCoord2i( GL_TEXTURE6, w-1 , h +1 ); |
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glMultiTexCoord2i( GL_TEXTURE7, w+1 , h -1 ); |
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glVertex2i ( w , h ); |
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glMultiTexCoord2i( GL_TEXTURE0, w , 0 );
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glMultiTexCoord2i( GL_TEXTURE1, w-1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE2, w+1 , 0 ); |
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glMultiTexCoord2i( GL_TEXTURE3, w , -1 );
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glMultiTexCoord2i( GL_TEXTURE4, w , 1 );
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glMultiTexCoord2i( GL_TEXTURE5, w-1 , -1 ); |
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glMultiTexCoord2i( GL_TEXTURE6, w-1 , 1 ); |
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glMultiTexCoord2i( GL_TEXTURE7, w+1 , -1 ); |
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glVertex2i ( w , 0 );
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glEnd (); |
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glFlush(); |
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} |
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void GLTexImage::DrawImage()
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{ |
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DrawQuad(); |
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} |
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void GLTexImage::FitTexViewPort()
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{ |
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GlobalUtil::FitViewPort(_drawWidth, _drawHeight); |
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} |
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void GLTexImage::FitRealTexViewPort()
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{ |
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GlobalUtil::FitViewPort(_texWidth, _texHeight); |
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} |
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void GLTexImage::AttachToFBO(int i) |
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{ |
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glFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, i+GL_COLOR_ATTACHMENT0_EXT, _texTarget, _texID, 0 );
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} |
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void GLTexImage::DetachFBO(int i) |
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{ |
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glFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, i+GL_COLOR_ATTACHMENT0_EXT, _texTarget, 0, 0 ); |
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} |
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void GLTexImage::DrawQuad(float x1, float x2, float y1, float y2) |
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{ |
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glBegin (GL_QUADS); |
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glTexCoord2f ( x1 , y1 ); glVertex2f ( x1 , y1 ); |
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glTexCoord2f ( x1 , y2 ); glVertex2f ( x1 , y2 ); |
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glTexCoord2f ( x2 , y2 ); glVertex2f ( x2 , y2 ); |
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glTexCoord2f ( x2 , y1 ); glVertex2f ( x2 , y1 ); |
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glEnd (); |
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glFlush(); |
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} |
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void GLTexImage::TexConvertRGB()
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{ |
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//change 3/22/09
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FrameBufferObject fbo; |
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//GlobalUtil::FitViewPort(1, 1);
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FitTexViewPort(); |
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AttachToFBO(0);
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ShaderMan::UseShaderRGB2Gray(); |
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glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT); |
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DrawQuad(); |
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ShaderMan::UnloadProgram(); |
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DetachFBO(0);
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} |
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void GLTexImage::DrawQuadDS(int scale) |
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{ |
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DrawScaledQuad(float(scale));
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} |
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void GLTexImage::DrawQuadUS(int scale) |
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{ |
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DrawScaledQuad(1.0f/scale); |
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} |
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void GLTexImage::DrawScaledQuad(float texscale) |
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{ |
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////the texture coordinate for 0.5 is to + 0.5*texscale
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float to = 0.5f -0.5f * texscale; |
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float tx = _imgWidth*texscale +to;
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float ty = _imgHeight*texscale +to;
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glBegin (GL_QUADS); |
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glTexCoord2f ( to , to ); glVertex2i ( 0 , 0 ); |
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glTexCoord2f ( to , ty ); glVertex2i ( 0 , _imgHeight );
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glTexCoord2f ( tx , ty ); glVertex2i ( _imgWidth , _imgHeight ); |
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glTexCoord2f ( tx , to ); glVertex2i ( _imgWidth , 0 );
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glEnd (); |
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glFlush(); |
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} |
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void GLTexImage::DrawQuadReduction(int w , int h) |
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{ |
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float to = -0.5f; |
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float tx = w*2 +to; |
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float ty = h*2 +to; |
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glBegin (GL_QUADS); |
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glMultiTexCoord2f ( GL_TEXTURE0, to , to ); |
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glMultiTexCoord2f ( GL_TEXTURE1, to +1, to );
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glMultiTexCoord2f ( GL_TEXTURE2, to , to+1 );
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glMultiTexCoord2f ( GL_TEXTURE3, to +1, to+1 ); |
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glVertex2i ( 0 , 0 ); |
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glMultiTexCoord2f ( GL_TEXTURE0, to , ty ); |
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glMultiTexCoord2f ( GL_TEXTURE1, to +1, ty );
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glMultiTexCoord2f ( GL_TEXTURE2, to , ty +1 );
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glMultiTexCoord2f ( GL_TEXTURE3, to +1, ty +1 ); |
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glVertex2i ( 0 , h );
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glMultiTexCoord2f ( GL_TEXTURE0, tx , ty ); |
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glMultiTexCoord2f ( GL_TEXTURE1, tx +1, ty );
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glMultiTexCoord2f ( GL_TEXTURE2, tx , ty +1);
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glMultiTexCoord2f ( GL_TEXTURE3, tx +1, ty +1); |
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glVertex2i ( w , h ); |
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glMultiTexCoord2f ( GL_TEXTURE0, tx , to ); |
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glMultiTexCoord2f ( GL_TEXTURE1, tx +1, to );
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glMultiTexCoord2f ( GL_TEXTURE2, tx , to +1 );
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glMultiTexCoord2f ( GL_TEXTURE3, tx +1, to +1 ); |
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glVertex2i ( w , 0 );
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glEnd (); |
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glFlush(); |
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} |
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void GLTexImage::DrawQuadReduction()
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{ |
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float to = -0.5f; |
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float tx = _drawWidth*2 +to; |
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float ty = _drawHeight*2 +to; |
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glBegin (GL_QUADS); |
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glMultiTexCoord2f ( GL_TEXTURE0, to , to ); |
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glMultiTexCoord2f ( GL_TEXTURE1, to +1, to );
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glMultiTexCoord2f ( GL_TEXTURE2, to , to+1 );
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glMultiTexCoord2f ( GL_TEXTURE3, to +1, to+1 ); |
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glVertex2i ( 0 , 0 ); |
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glMultiTexCoord2f ( GL_TEXTURE0, to , ty ); |
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glMultiTexCoord2f ( GL_TEXTURE1, to +1, ty );
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glMultiTexCoord2f ( GL_TEXTURE2, to , ty +1 );
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glMultiTexCoord2f ( GL_TEXTURE3, to +1, ty +1 ); |
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glVertex2i ( 0 , _drawHeight );
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glMultiTexCoord2f ( GL_TEXTURE0, tx , ty ); |
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glMultiTexCoord2f ( GL_TEXTURE1, tx +1, ty );
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glMultiTexCoord2f ( GL_TEXTURE2, tx , ty +1);
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glMultiTexCoord2f ( GL_TEXTURE3, tx +1, ty +1); |
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glVertex2i ( _drawWidth , _drawHeight ); |
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glMultiTexCoord2f ( GL_TEXTURE0, tx , to ); |
489 |
glMultiTexCoord2f ( GL_TEXTURE1, tx +1, to );
|
490 |
glMultiTexCoord2f ( GL_TEXTURE2, tx , to +1 );
|
491 |
glMultiTexCoord2f ( GL_TEXTURE3, tx +1, to +1 ); |
492 |
glVertex2i ( _drawWidth , 0 );
|
493 |
glEnd (); |
494 |
|
495 |
glFlush(); |
496 |
} |
497 |
|
498 |
void GLTexPacked::TexConvertRGB()
|
499 |
{ |
500 |
//update the actual size of daw area
|
501 |
_drawWidth = (1 + _imgWidth) >> 1; |
502 |
_drawHeight = (1 + _imgHeight) >> 1; |
503 |
///
|
504 |
FrameBufferObject fbo; |
505 |
GLuint oldTexID = _texID; |
506 |
glGenTextures(1, &_texID);
|
507 |
glBindTexture(_texTarget, _texID); |
508 |
glTexImage2D(_texTarget, 0, _iTexFormat, _texWidth, _texHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); |
509 |
|
510 |
//input
|
511 |
glBindTexture(_texTarget, oldTexID); |
512 |
//output
|
513 |
AttachToFBO(0);
|
514 |
//program
|
515 |
ShaderMan::UseShaderRGB2Gray(); |
516 |
//draw buffer
|
517 |
glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT); |
518 |
//run
|
519 |
DrawQuadDS(2);
|
520 |
ShaderMan::UnloadProgram(); |
521 |
|
522 |
glDeleteTextures(1, &oldTexID);
|
523 |
DetachFBO(0);
|
524 |
} |
525 |
|
526 |
|
527 |
void GLTexPacked::SetImageSize( int width, int height) |
528 |
{ |
529 |
_imgWidth = width; _drawWidth = (width + 1) >> 1; |
530 |
_imgHeight = height; _drawHeight = (height + 1) >> 1; |
531 |
} |
532 |
|
533 |
void GLTexPacked::InitTexture( int width, int height, int clamp_to_edge) |
534 |
{ |
535 |
|
536 |
if(_texID && width == _imgWidth && height == _imgHeight ) return; |
537 |
if(_texID==0) glGenTextures(1, &_texID); |
538 |
|
539 |
_imgWidth = width; |
540 |
_imgHeight = height; |
541 |
if(GlobalUtil::_PreciseBorder)
|
542 |
{ |
543 |
_texWidth = (width + 2) >> 1; |
544 |
_texHeight = (height + 2) >> 1; |
545 |
}else
|
546 |
{ |
547 |
_texWidth = (width + 1) >> 1; |
548 |
_texHeight = (height + 1) >> 1; |
549 |
} |
550 |
_drawWidth = (width + 1) >> 1; |
551 |
_drawHeight = (height + 1) >> 1; |
552 |
|
553 |
BindTex(); |
554 |
|
555 |
if(clamp_to_edge)
|
556 |
{ |
557 |
glTexParameteri (_texTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
558 |
glTexParameteri (_texTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
559 |
}else
|
560 |
{ |
561 |
//out of bound tex read returns 0??
|
562 |
glTexParameteri (_texTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); |
563 |
glTexParameteri (_texTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); |
564 |
} |
565 |
glTexParameteri(_texTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
566 |
glTexParameteri(_texTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
567 |
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
568 |
|
569 |
glTexImage2D(_texTarget, 0, _iTexFormat,
|
570 |
_texWidth, _texHeight, 0, GL_RGBA, GL_FLOAT, NULL); |
571 |
|
572 |
UnbindTex(); |
573 |
|
574 |
} |
575 |
|
576 |
|
577 |
void GLTexPacked::DrawImage()
|
578 |
{ |
579 |
float x1 =0, y1 = 0; //border.. |
580 |
float x2 = _imgWidth*0.5f +x1; |
581 |
float y2 = _imgHeight*0.5f + y1; |
582 |
glBegin (GL_QUADS); |
583 |
glTexCoord2f ( x1 , y1 ); glVertex2i ( 0 , 0 ); |
584 |
glTexCoord2f ( x1 , y2 ); glVertex2i ( 0 , _imgHeight );
|
585 |
glTexCoord2f ( x2 , y2 ); glVertex2i ( _imgWidth , _imgHeight ); |
586 |
glTexCoord2f ( x2 , y1 ); glVertex2i ( _imgWidth , 0 );
|
587 |
glEnd (); |
588 |
glFlush(); |
589 |
} |
590 |
|
591 |
void GLTexPacked::DrawQuadUS(int scale) |
592 |
{ |
593 |
int tw =_drawWidth, th = _drawHeight;
|
594 |
float texscale = 1.0f / scale; |
595 |
float x1 = 0.5f - 0.5f*scale, y1 = x1; |
596 |
float x2 = tw * texscale + x1;
|
597 |
float y2 = th * texscale + y1;
|
598 |
float step = texscale *0.5f; |
599 |
glBegin (GL_QUADS); |
600 |
glMultiTexCoord2f( GL_TEXTURE0, x1 , y1 ); |
601 |
glMultiTexCoord2f( GL_TEXTURE1, x1+step , y1 ); |
602 |
glMultiTexCoord2f( GL_TEXTURE2, x1 , y1 +step); |
603 |
glMultiTexCoord2f( GL_TEXTURE3, x1+step , y1 +step); |
604 |
glVertex2i ( 0 , 0 ); |
605 |
|
606 |
glMultiTexCoord2f( GL_TEXTURE0, x1 , y2 ); |
607 |
glMultiTexCoord2f( GL_TEXTURE1, x1+step , y2 ); |
608 |
glMultiTexCoord2f( GL_TEXTURE2, x1 , y2 +step); |
609 |
glMultiTexCoord2f( GL_TEXTURE3, x1+step , y2 +step); |
610 |
glVertex2i ( 0 , th );
|
611 |
|
612 |
glMultiTexCoord2f( GL_TEXTURE0, x2 , y2 ); |
613 |
glMultiTexCoord2f( GL_TEXTURE1, x2+step , y2 ); |
614 |
glMultiTexCoord2f( GL_TEXTURE2, x2 , y2 +step); |
615 |
glMultiTexCoord2f( GL_TEXTURE3, x2+step , y2 +step); |
616 |
glVertex2i ( tw , th ); |
617 |
|
618 |
glMultiTexCoord2f( GL_TEXTURE0, x2 , y1 ); |
619 |
glMultiTexCoord2f( GL_TEXTURE1, x2+step , y1 ); |
620 |
glMultiTexCoord2f( GL_TEXTURE2, x2 , y1 +step); |
621 |
glMultiTexCoord2f( GL_TEXTURE3, x2+step , y1 +step); |
622 |
glVertex2i ( tw , 0 );
|
623 |
glEnd (); |
624 |
} |
625 |
|
626 |
void GLTexPacked::DrawQuadDS(int scale) |
627 |
{ |
628 |
int tw = _drawWidth;
|
629 |
int th = _drawHeight;
|
630 |
float x1 = 0.5f - 0.5f*scale; |
631 |
float x2 = tw * scale + x1;
|
632 |
float y1 = 0.5f - 0.5f * scale; |
633 |
float y2 = th * scale + y1;
|
634 |
int step = scale / 2; |
635 |
|
636 |
glBegin (GL_QUADS); |
637 |
glMultiTexCoord2f( GL_TEXTURE0, x1 , y1 ); |
638 |
glMultiTexCoord2f( GL_TEXTURE1, x1+step , y1 ); |
639 |
glMultiTexCoord2f( GL_TEXTURE2, x1 , y1 +step); |
640 |
glMultiTexCoord2f( GL_TEXTURE3, x1+step , y1 +step); |
641 |
glVertex2i ( 0 , 0 ); |
642 |
|
643 |
glMultiTexCoord2f( GL_TEXTURE0, x1 , y2 ); |
644 |
glMultiTexCoord2f( GL_TEXTURE1, x1+step , y2 ); |
645 |
glMultiTexCoord2f( GL_TEXTURE2, x1 , y2 +step); |
646 |
glMultiTexCoord2f( GL_TEXTURE3, x1+step , y2 +step); |
647 |
glVertex2i ( 0 , th );
|
648 |
|
649 |
glMultiTexCoord2f( GL_TEXTURE0, x2 , y2 ); |
650 |
glMultiTexCoord2f( GL_TEXTURE1, x2+step , y2 ); |
651 |
glMultiTexCoord2f( GL_TEXTURE2, x2 , y2 +step); |
652 |
glMultiTexCoord2f( GL_TEXTURE3, x2+step , y2 +step); |
653 |
glVertex2i ( tw , th ); |
654 |
|
655 |
glMultiTexCoord2f( GL_TEXTURE0, x2 , y1 ); |
656 |
glMultiTexCoord2f( GL_TEXTURE1, x2+step , y1 ); |
657 |
glMultiTexCoord2f( GL_TEXTURE2, x2 , y1 +step); |
658 |
glMultiTexCoord2f( GL_TEXTURE3, x2+step , y1 +step); |
659 |
glVertex2i ( tw , 0 );
|
660 |
glEnd (); |
661 |
} |
662 |
|
663 |
void GLTexPacked::ZeroHistoMargin()
|
664 |
{ |
665 |
int marginx = (((_imgWidth + 3) /4)*4) - _imgWidth; |
666 |
int marginy = (((-_imgHeight + 3)/4)*4) - _imgHeight; |
667 |
if(marginx >0 || marginy > 0) |
668 |
{ |
669 |
int tw = (_imgWidth + marginx ) >> 1; |
670 |
int th = (_imgHeight + marginy ) >> 1; |
671 |
tw = min(_texWidth, tw ); |
672 |
th = min(_texHeight, th); |
673 |
GlobalUtil::FitViewPort(tw, th); |
674 |
AttachToFBO(0);
|
675 |
BindTex(); |
676 |
ShaderMan::UseShaderZeroPass(); |
677 |
DrawMargin(tw, th, 1, 1); |
678 |
} |
679 |
} |
680 |
|
681 |
|
682 |
void GLTexPacked::FillMargin(int marginx, int marginy) |
683 |
{ |
684 |
//
|
685 |
marginx = min(marginx, _texWidth * 2 - _imgWidth);
|
686 |
marginy = min(marginy, _texHeight * 2 - _imgHeight);
|
687 |
if(marginx >0 || marginy > 0) |
688 |
{ |
689 |
int tw = (_imgWidth + marginx + 1) >> 1; |
690 |
int th = (_imgHeight + marginy + 1) >> 1; |
691 |
GlobalUtil::FitViewPort(tw, th); |
692 |
BindTex(); |
693 |
AttachToFBO(0);
|
694 |
ShaderMan::UseShaderMarginCopy(_imgWidth , _imgHeight); |
695 |
DrawMargin(tw, th, marginx, marginy); |
696 |
} |
697 |
} |
698 |
void GLTexPacked::DrawMargin(int right, int bottom, int mx, int my) |
699 |
{ |
700 |
int tw = (_imgWidth >>1); |
701 |
int th = (_imgHeight >>1); |
702 |
glBegin(GL_QUADS); |
703 |
if(right>tw && mx)
|
704 |
{ |
705 |
glTexCoord2i ( tw , 0 ); glVertex2i ( tw , 0 ); |
706 |
glTexCoord2i ( tw , bottom ); glVertex2i ( tw , bottom ); |
707 |
glTexCoord2i ( right, bottom ); glVertex2i ( right, bottom ); |
708 |
glTexCoord2i ( right, 0 ); glVertex2i ( right, 0 ); |
709 |
} |
710 |
if(bottom>th && my)
|
711 |
{ |
712 |
glTexCoord2i ( 0 , th ); glVertex2i ( 0 , th ); |
713 |
glTexCoord2i ( 0 , bottom ); glVertex2i ( 0 , bottom ); |
714 |
glTexCoord2i ( tw , bottom ); glVertex2i ( tw , bottom ); |
715 |
glTexCoord2i ( tw , th ); glVertex2i ( tw , th ); |
716 |
} |
717 |
glEnd(); |
718 |
glFlush(); |
719 |
|
720 |
} |
721 |
|
722 |
|
723 |
void GLTexImage::UnbindMultiTex(int n) |
724 |
{ |
725 |
for(int i = n-1; i>=0; i--) |
726 |
{ |
727 |
glActiveTexture(GL_TEXTURE0+i); |
728 |
glBindTexture(_texTarget, 0);
|
729 |
} |
730 |
} |
731 |
|
732 |
template <class Uint> int |
733 |
|
734 |
#if !defined(_MSC_VER) || _MSC_VER > 1200 |
735 |
GLTexInput:: |
736 |
#endif
|
737 |
|
738 |
DownSamplePixelDataI(unsigned int gl_format, int width, int height, int ds, |
739 |
const Uint * pin, Uint * pout)
|
740 |
{ |
741 |
int step, linestep;
|
742 |
int i, j;
|
743 |
int ws = width/ds;
|
744 |
int hs = height/ds;
|
745 |
const Uint * line = pin, * p;
|
746 |
Uint *po = pout; |
747 |
switch(gl_format)
|
748 |
{ |
749 |
case GL_LUMINANCE:
|
750 |
case GL_LUMINANCE_ALPHA:
|
751 |
step = ds * (gl_format == GL_LUMINANCE? 1: 2); |
752 |
linestep = width * step; |
753 |
for(i = 0 ; i < hs; i++, line+=linestep) |
754 |
{ |
755 |
for(j = 0, p = line; j < ws; j++, p+=step) |
756 |
{ |
757 |
*po++ = *p; |
758 |
} |
759 |
} |
760 |
break;
|
761 |
case GL_RGB:
|
762 |
case GL_RGBA:
|
763 |
step = ds * (gl_format == GL_RGB? 3: 4); |
764 |
linestep = width * step; |
765 |
|
766 |
for(i = 0 ; i < hs; i++, line+=linestep) |
767 |
{ |
768 |
for(j = 0, p = line; j < ws; j++, p+=step) |
769 |
{ |
770 |
//*po++ = int(p[0]*0.299 + p[1] * 0.587 + p[2]* 0.114 + 0.5);
|
771 |
*po++ = ((19595*p[0] + 38470*p[1] + 7471*p[2]+ 32768)>>16); |
772 |
} |
773 |
} |
774 |
break;
|
775 |
case GL_BGR:
|
776 |
case GL_BGRA:
|
777 |
step = ds * (gl_format == GL_BGR? 3: 4); |
778 |
linestep = width * step; |
779 |
for(i = 0 ; i < hs; i++, line+=linestep) |
780 |
{ |
781 |
for(j = 0, p = line; j < ws; j++, p+=step) |
782 |
{ |
783 |
*po++ = ((7471*p[0] + 38470*p[1] + 19595*p[2]+ 32768)>>16); |
784 |
} |
785 |
} |
786 |
break;
|
787 |
default:
|
788 |
return 0; |
789 |
} |
790 |
|
791 |
return 1; |
792 |
|
793 |
} |
794 |
|
795 |
|
796 |
template <class Uint> int |
797 |
|
798 |
#if !defined(_MSC_VER) || _MSC_VER > 1200 |
799 |
GLTexInput:: |
800 |
#endif
|
801 |
|
802 |
DownSamplePixelDataI2F(unsigned int gl_format, int width, int height, int ds, |
803 |
const Uint * pin, float * pout, int skip) |
804 |
{ |
805 |
int step, linestep;
|
806 |
int i, j;
|
807 |
int ws = width/ds - skip;
|
808 |
int hs = height/ds;
|
809 |
const Uint * line = pin, * p;
|
810 |
float *po = pout;
|
811 |
const float factor = (sizeof(Uint) == 1? 255.0f : 65535.0f); |
812 |
switch(gl_format)
|
813 |
{ |
814 |
case GL_LUMINANCE:
|
815 |
case GL_LUMINANCE_ALPHA:
|
816 |
step = ds * (gl_format == GL_LUMINANCE? 1: 2); |
817 |
linestep = width * step; |
818 |
for(i = 0 ; i < hs; i++, line+=linestep) |
819 |
{ |
820 |
for(j = 0, p = line; j < ws; j++, p+=step) |
821 |
{ |
822 |
*po++ = (*p) / factor; |
823 |
} |
824 |
} |
825 |
break;
|
826 |
case GL_RGB:
|
827 |
case GL_RGBA:
|
828 |
step = ds * (gl_format == GL_RGB? 3: 4); |
829 |
linestep = width * step; |
830 |
|
831 |
for(i = 0 ; i < hs; i++, line+=linestep) |
832 |
{ |
833 |
for(j = 0, p = line; j < ws; j++, p+=step) |
834 |
{ |
835 |
//*po++ = int(p[0]*0.299 + p[1] * 0.587 + p[2]* 0.114 + 0.5);
|
836 |
*po++ = ((19595*p[0] + 38470*p[1] + 7471*p[2]) / (65535.0f * factor)); |
837 |
} |
838 |
} |
839 |
break;
|
840 |
case GL_BGR:
|
841 |
case GL_BGRA:
|
842 |
step = ds * (gl_format == GL_BGR? 3: 4); |
843 |
linestep = width * step; |
844 |
for(i = 0 ; i < hs; i++, line+=linestep) |
845 |
{ |
846 |
for(j = 0, p = line; j < ws; j++, p+=step) |
847 |
{ |
848 |
*po++ = ((7471*p[0] + 38470*p[1] + 19595*p[2]) / (65535.0f * factor)); |
849 |
} |
850 |
} |
851 |
break;
|
852 |
default:
|
853 |
return 0; |
854 |
} |
855 |
return 1; |
856 |
} |
857 |
|
858 |
int GLTexInput::DownSamplePixelDataF(unsigned int gl_format, int width, int height, int ds, const float * pin, float * pout, int skip) |
859 |
{ |
860 |
int step, linestep;
|
861 |
int i, j;
|
862 |
int ws = width/ds - skip;
|
863 |
int hs = height/ds;
|
864 |
const float * line = pin, * p; |
865 |
float *po = pout;
|
866 |
switch(gl_format)
|
867 |
{ |
868 |
case GL_LUMINANCE:
|
869 |
case GL_LUMINANCE_ALPHA:
|
870 |
step = ds * (gl_format == GL_LUMINANCE? 1: 2); |
871 |
linestep = width * step; |
872 |
for(i = 0 ; i < hs; i++, line+=linestep) |
873 |
{ |
874 |
for(j = 0, p = line; j < ws; j++, p+=step) |
875 |
{ |
876 |
*po++ = *p; |
877 |
} |
878 |
} |
879 |
break;
|
880 |
case GL_RGB:
|
881 |
case GL_RGBA:
|
882 |
step = ds * (gl_format == GL_RGB? 3: 4); |
883 |
linestep = width * step; |
884 |
for(i = 0 ; i < hs; i++, line+=linestep) |
885 |
{ |
886 |
for(j = 0, p = line; j < ws; j++, p+=step) |
887 |
{ |
888 |
*po++ = (0.299f*p[0] + 0.587f*p[1] + 0.114f*p[2]); |
889 |
} |
890 |
} |
891 |
break;
|
892 |
case GL_BGR:
|
893 |
case GL_BGRA:
|
894 |
step = ds * (gl_format == GL_BGR? 3: 4); |
895 |
linestep = width * step; |
896 |
for(i = 0 ; i < hs; i++, line+=linestep) |
897 |
{ |
898 |
for(j = 0, p = line; j < ws; j++, p+=step) |
899 |
{ |
900 |
*po++ = (0.114f*p[0] + 0.587f*p[1] + 0.299f * p[2]); |
901 |
} |
902 |
} |
903 |
break;
|
904 |
default:
|
905 |
return 0; |
906 |
} |
907 |
|
908 |
return 1; |
909 |
|
910 |
} |
911 |
|
912 |
int GLTexInput::SetImageData( int width, int height, const void * data, |
913 |
unsigned int gl_format, unsigned int gl_type ) |
914 |
{ |
915 |
int simple_format = IsSimpleGlFormat(gl_format, gl_type);//no cpu code to handle other formats |
916 |
int ws, hs, done = 1; |
917 |
|
918 |
if(_converted_data) {delete [] _converted_data; _converted_data = NULL; } |
919 |
|
920 |
_rgb_converted = 1;
|
921 |
_data_modified = 0;
|
922 |
|
923 |
if( simple_format
|
924 |
&& ( width > _texMaxDim || height > _texMaxDim || GlobalUtil::_PreProcessOnCPU) |
925 |
&& GlobalUtil::_octave_min_default >0 )
|
926 |
{ |
927 |
_down_sampled = GlobalUtil::_octave_min_default; |
928 |
ws = width >> GlobalUtil::_octave_min_default; |
929 |
hs = height >> GlobalUtil::_octave_min_default; |
930 |
}else
|
931 |
{ |
932 |
_down_sampled = 0;
|
933 |
ws = width; |
934 |
hs = height; |
935 |
} |
936 |
|
937 |
if ( ws > _texMaxDim || hs > _texMaxDim)
|
938 |
{ |
939 |
if(simple_format)
|
940 |
{ |
941 |
if(GlobalUtil::_verbose) std::cout<<"Automatic down-sampling is used\n"; |
942 |
do
|
943 |
{ |
944 |
_down_sampled ++; |
945 |
ws >>= 1;
|
946 |
hs >>= 1;
|
947 |
}while(ws > _texMaxDim || hs > _texMaxDim);
|
948 |
}else
|
949 |
{ |
950 |
std::cerr<<"Input images is too big to fit into a texture\n";
|
951 |
return 0; |
952 |
} |
953 |
} |
954 |
|
955 |
_texWidth = _imgWidth = _drawWidth = ws; |
956 |
_texHeight = _imgHeight = _drawHeight = hs; |
957 |
|
958 |
if(GlobalUtil::_verbose)
|
959 |
{ |
960 |
std::cout<<"Image size :\t"<<width<<"x"<<height<<"\n"; |
961 |
if(_down_sampled >0) std::cout<<"Down sample to \t"<<ws<<"x"<<hs<<"\n"; |
962 |
} |
963 |
|
964 |
|
965 |
if(GlobalUtil::_UseCUDA || GlobalUtil::_UseOpenCL)
|
966 |
{ |
967 |
//////////////////////////////////////
|
968 |
int tWidth = TruncateWidthCU(_imgWidth);
|
969 |
int skip = _imgWidth - tWidth;
|
970 |
//skip = 0;
|
971 |
if(!simple_format)
|
972 |
{ |
973 |
std::cerr << "Input format not supported under current settings.\n";
|
974 |
return 0; |
975 |
}else if(_down_sampled > 0 || gl_format != GL_LUMINANCE || gl_type != GL_FLOAT) |
976 |
{ |
977 |
_converted_data = new float [_imgWidth * _imgHeight]; |
978 |
if(gl_type == GL_UNSIGNED_BYTE)
|
979 |
DownSamplePixelDataI2F(gl_format, width, height, 1<<_down_sampled,
|
980 |
((const unsigned char*) data), _converted_data, skip); |
981 |
else if(gl_type == GL_UNSIGNED_SHORT) |
982 |
DownSamplePixelDataI2F(gl_format, width, height, 1<<_down_sampled,
|
983 |
((const unsigned short*) data), _converted_data, skip); |
984 |
else
|
985 |
DownSamplePixelDataF(gl_format, width, height, 1<<_down_sampled, (float*)data, _converted_data, skip); |
986 |
_rgb_converted = 2; //indidates a new data copy |
987 |
_pixel_data = _converted_data; |
988 |
}else
|
989 |
{ |
990 |
//Luminance data that doesn't need to down sample
|
991 |
_rgb_converted = 1;
|
992 |
_pixel_data = data; |
993 |
if(skip > 0) |
994 |
{ |
995 |
for(int i = 1; i < _imgHeight; ++i) |
996 |
{ |
997 |
float * dst = ((float*)data) + i * tWidth, * src = ((float*)data) + i * _imgWidth; |
998 |
for(int j = 0; j < tWidth; ++j) *dst++ = * src++; |
999 |
} |
1000 |
} |
1001 |
} |
1002 |
_texWidth = _imgWidth = _drawWidth = tWidth; |
1003 |
_data_modified = 1;
|
1004 |
}else
|
1005 |
{ |
1006 |
if(_texID ==0) glGenTextures(1, &_texID); |
1007 |
glBindTexture(_texTarget, _texID); |
1008 |
CheckErrorsGL("glBindTexture");
|
1009 |
glTexParameteri (_texTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
1010 |
glTexParameteri (_texTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
1011 |
glPixelStorei(GL_UNPACK_ALIGNMENT , 1);
|
1012 |
|
1013 |
if(simple_format && ( _down_sampled> 0 || (gl_format != GL_LUMINANCE && GlobalUtil::_PreProcessOnCPU) )) |
1014 |
{ |
1015 |
|
1016 |
if(gl_type == GL_UNSIGNED_BYTE)
|
1017 |
{ |
1018 |
unsigned char * newdata = new unsigned char [_imgWidth * _imgHeight]; |
1019 |
DownSamplePixelDataI(gl_format, width, height, 1<<_down_sampled, ((const unsigned char*) data), newdata); |
1020 |
glTexImage2D(_texTarget, 0, GL_LUMINANCE32F_ARB, //internal format changed |
1021 |
_imgWidth, _imgHeight, 0,
|
1022 |
GL_LUMINANCE, GL_UNSIGNED_BYTE, newdata); |
1023 |
delete newdata;
|
1024 |
}else if(gl_type == GL_UNSIGNED_SHORT) |
1025 |
{ |
1026 |
unsigned short * newdata = new unsigned short [_imgWidth * _imgHeight]; |
1027 |
DownSamplePixelDataI(gl_format, width, height, 1<<_down_sampled, ((const unsigned short*) data), newdata); |
1028 |
|
1029 |
glTexImage2D(_texTarget, 0, GL_LUMINANCE32F_ARB, //internal format changed |
1030 |
_imgWidth, _imgHeight, 0,
|
1031 |
GL_LUMINANCE, GL_UNSIGNED_SHORT, newdata); |
1032 |
delete newdata;
|
1033 |
}else if(gl_type == GL_FLOAT) |
1034 |
{ |
1035 |
float * newdata = new float [_imgWidth * _imgHeight]; |
1036 |
DownSamplePixelDataF(gl_format, width, height, 1<<_down_sampled, (float*)data, newdata); |
1037 |
glTexImage2D(_texTarget, 0, GL_LUMINANCE32F_ARB, //internal format changed |
1038 |
_imgWidth, _imgHeight, 0,
|
1039 |
GL_LUMINANCE, GL_FLOAT, newdata); |
1040 |
delete newdata;
|
1041 |
}else
|
1042 |
{ |
1043 |
//impossible
|
1044 |
done = 0;
|
1045 |
_rgb_converted = 0;
|
1046 |
} |
1047 |
GlobalUtil::FitViewPort(1, 1); //this used to be necessary |
1048 |
}else
|
1049 |
{ |
1050 |
//ds must be 0 here if not simpleformat
|
1051 |
if(gl_format == GL_LUMINANCE || gl_format == GL_LUMINANCE_ALPHA)
|
1052 |
{ |
1053 |
//use one channel internal format if data is intensity image
|
1054 |
glTexImage2D(_texTarget, 0, GL_LUMINANCE32F_ARB,
|
1055 |
_imgWidth, _imgHeight, 0, gl_format, gl_type, data);
|
1056 |
GlobalUtil::FitViewPort(1, 1); //this used to be necessary |
1057 |
} |
1058 |
else
|
1059 |
{ |
1060 |
//convert RGB 2 GRAY if needed
|
1061 |
glTexImage2D(_texTarget, 0, _iTexFormat, _imgWidth, _imgHeight, 0, gl_format, gl_type, data); |
1062 |
if(ShaderMan::HaveShaderMan())
|
1063 |
TexConvertRGB(); |
1064 |
else
|
1065 |
_rgb_converted = 0; //In CUDA mode, the conversion will be done by CUDA kernel |
1066 |
} |
1067 |
} |
1068 |
UnbindTex(); |
1069 |
} |
1070 |
return done;
|
1071 |
} |
1072 |
|
1073 |
|
1074 |
GLTexInput::~GLTexInput() |
1075 |
{ |
1076 |
if(_converted_data) delete [] _converted_data; |
1077 |
} |
1078 |
|
1079 |
|
1080 |
int GLTexInput::LoadImageFile(char *imagepath, int &w, int &h ) |
1081 |
{ |
1082 |
#ifndef SIFTGPU_NO_DEVIL
|
1083 |
static int devil_loaded = 0; |
1084 |
unsigned int imID; |
1085 |
int done = 1; |
1086 |
|
1087 |
if(devil_loaded == 0) |
1088 |
{ |
1089 |
ilInit(); |
1090 |
ilOriginFunc(IL_ORIGIN_UPPER_LEFT); |
1091 |
ilEnable(IL_ORIGIN_SET); |
1092 |
devil_loaded = 1;
|
1093 |
} |
1094 |
|
1095 |
///
|
1096 |
ilGenImages(1, &imID);
|
1097 |
ilBindImage(imID); |
1098 |
|
1099 |
if(ilLoadImage(imagepath))
|
1100 |
{ |
1101 |
w = ilGetInteger(IL_IMAGE_WIDTH); |
1102 |
h = ilGetInteger(IL_IMAGE_HEIGHT); |
1103 |
int ilformat = ilGetInteger(IL_IMAGE_FORMAT);
|
1104 |
|
1105 |
if(SetImageData(w, h, ilGetData(), ilformat, GL_UNSIGNED_BYTE)==0) |
1106 |
{ |
1107 |
done =0;
|
1108 |
}else if(GlobalUtil::_verbose) |
1109 |
{ |
1110 |
std::cout<<"Image loaded :\t"<<imagepath<<"\n"; |
1111 |
} |
1112 |
|
1113 |
}else
|
1114 |
{ |
1115 |
std::cerr<<"Unable to open image [code = "<<ilGetError()<<"]\n"; |
1116 |
done = 0;
|
1117 |
} |
1118 |
|
1119 |
ilDeleteImages(1, &imID);
|
1120 |
|
1121 |
return done;
|
1122 |
#else
|
1123 |
FILE * file = fopen(imagepath, "rb"); if (file ==NULL) return 0; |
1124 |
|
1125 |
char buf[8]; int width, height, cn, g, done = 1; |
1126 |
|
1127 |
if(fscanf(file, "%s %d %d %d", buf, &width, &height, &cn )<4 || cn > 255 || width < 0 || height < 0) |
1128 |
{ |
1129 |
fclose(file); |
1130 |
std::cerr << "ERROR: fileformat not supported\n";
|
1131 |
return 0; |
1132 |
}else
|
1133 |
{ |
1134 |
w = width; |
1135 |
h = height; |
1136 |
} |
1137 |
unsigned char * data = new unsigned char[width * height]; |
1138 |
unsigned char * pixels = data; |
1139 |
if (strcmp(buf, "P5")==0 ) |
1140 |
{ |
1141 |
fscanf(file, "%c",buf);//skip one byte |
1142 |
fread(pixels, 1, width*height, file);
|
1143 |
}else if (strcmp(buf, "P2")==0 ) |
1144 |
{ |
1145 |
for (int i = 0 ; i< height; i++) |
1146 |
{ |
1147 |
for ( int j = 0; j < width; j++) |
1148 |
{ |
1149 |
fscanf(file, "%d", &g);
|
1150 |
*pixels++ = (unsigned char) g; |
1151 |
} |
1152 |
} |
1153 |
}else if (strcmp(buf, "P6")==0 ) |
1154 |
{ |
1155 |
fscanf(file, "%c", buf);//skip one byte |
1156 |
int j, num = height*width;
|
1157 |
unsigned char buf[3]; |
1158 |
for ( j =0 ; j< num; j++) |
1159 |
{ |
1160 |
fread(buf,1,3, file); |
1161 |
*pixels++=int(0.10454f* buf[2]+0.60581f* buf[1]+0.28965f* buf[0]); |
1162 |
} |
1163 |
}else if (strcmp(buf, "P3")==0 ) |
1164 |
{ |
1165 |
int r, g, b;
|
1166 |
int i , num =height*width;
|
1167 |
for ( i = 0 ; i< num; i++) |
1168 |
{ |
1169 |
fscanf(file, "%d %d %d", &r, &g, &b);
|
1170 |
*pixels++ = int(0.10454f* b+0.60581f* g+0.28965f* r); |
1171 |
} |
1172 |
|
1173 |
}else
|
1174 |
{ |
1175 |
std::cerr << "ERROR: fileformat not supported\n";
|
1176 |
done = 0;
|
1177 |
} |
1178 |
if(done) SetImageData(width, height, data, GL_LUMINANCE, GL_UNSIGNED_BYTE);
|
1179 |
fclose(file); |
1180 |
delete data;
|
1181 |
if(GlobalUtil::_verbose && done) std::cout<< "Image loaded :\t" << imagepath << "\n"; |
1182 |
return 1; |
1183 |
#endif
|
1184 |
} |
1185 |
|
1186 |
int GLTexImage::CopyToPBO(GLuint pbo, int width, int height, GLenum format) |
1187 |
{ |
1188 |
/////////
|
1189 |
if(format != GL_RGBA && format != GL_LUMINANCE) return 0; |
1190 |
|
1191 |
FrameBufferObject fbo; |
1192 |
GLint bsize, esize = width * height * sizeof(float) * (format == GL_RGBA ? 4 : 1); |
1193 |
AttachToFBO(0);
|
1194 |
glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, pbo); |
1195 |
glGetBufferParameteriv(GL_PIXEL_PACK_BUFFER_ARB, GL_BUFFER_SIZE, &bsize); |
1196 |
if(bsize < esize)
|
1197 |
{ |
1198 |
glBufferData(GL_PIXEL_PACK_BUFFER_ARB, esize, NULL, GL_STATIC_DRAW_ARB);
|
1199 |
glGetBufferParameteriv(GL_PIXEL_PACK_BUFFER_ARB, GL_BUFFER_SIZE, &bsize); |
1200 |
} |
1201 |
if(bsize >= esize)
|
1202 |
{ |
1203 |
glReadPixels(0, 0, width, height, format, GL_FLOAT, 0); |
1204 |
} |
1205 |
glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, 0);
|
1206 |
DetachFBO(0);
|
1207 |
|
1208 |
return bsize >= esize;
|
1209 |
} |
1210 |
|
1211 |
void GLTexInput::VerifyTexture()
|
1212 |
{ |
1213 |
//for CUDA or OpenCL the texture is not generated by default
|
1214 |
if(!_data_modified) return; |
1215 |
if(_pixel_data== NULL) return; |
1216 |
InitTexture(_imgWidth, _imgHeight); |
1217 |
BindTex(); |
1218 |
glTexImage2D( _texTarget, 0, GL_LUMINANCE32F_ARB, //internal format changed |
1219 |
_imgWidth, _imgHeight, 0,
|
1220 |
GL_LUMINANCE, GL_FLOAT, _pixel_data); |
1221 |
UnbindTex(); |
1222 |
_data_modified = 0;
|
1223 |
} |
1224 |
|
1225 |
void GLTexImage::CopyFromPBO(GLuint pbo, int width, int height, GLenum format) |
1226 |
{ |
1227 |
InitTexture(max(width, _texWidth), max(height, _texHeight)); |
1228 |
SetImageSize(width, height); |
1229 |
if(width > 0 && height > 0) |
1230 |
{ |
1231 |
BindTex(); |
1232 |
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo); |
1233 |
glTexSubImage2D(GlobalUtil::_texTarget, 0, 0, 0, width, height, format, GL_FLOAT, 0); |
1234 |
GlobalUtil::CheckErrorsGL("GLTexImage::CopyFromPBO->glTexSubImage2D");
|
1235 |
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
|
1236 |
UnbindTex(); |
1237 |
} |
1238 |
} |
1239 |
|