shaderWallPaper.cpp 4.22 KB
Newer Older
Sylvain Thery's avatar
Sylvain Thery committed
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
/*******************************************************************************
* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
* version 0.1                                                                  *
* Copyright (C) 2009-2012, IGG Team, LSIIT, University of Strasbourg           *
*                                                                              *
* This library is free software; you can redistribute it and/or modify it      *
* under the terms of the GNU Lesser General Public License as published by the *
* Free Software Foundation; either version 2.1 of the License, or (at your     *
* option) any later version.                                                   *
*                                                                              *
* This library 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 Lesser General Public License  *
* for more details.                                                            *
*                                                                              *
* You should have received a copy of the GNU Lesser General Public License     *
* along with this library; if not, write to the Free Software Foundation,      *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
*                                                                              *
* Web site: http://cgogn.unistra.fr/                                           *
* Contact information: cgogn@unistra.fr                                        *
*                                                                              *
*******************************************************************************/

#include <GL/glew.h>
#include "Utils/Shaders/shaderWallPaper.h"


namespace CGoGN
{

namespace Utils
{
#include "shaderWallPaper.vert"
#include "shaderWallPaper.frag"


ShaderWallPaper::ShaderWallPaper():
	m_tex_ptr(NULL)
{
	std::string glxvert(*GLSLShader::DEFINES_GL);
	glxvert.append(vertexShaderText);

	std::string glxfrag(*GLSLShader::DEFINES_GL);
	glxfrag.append(fragmentShaderText);

	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
	
	m_unif_unit = glGetUniformLocation(this->program_handler(), "textureUnit");

	m_vboPos = new Utils::VBO();
	m_vboPos->setDataSize(3);
	m_vboPos->allocate(4);
	Geom::Vec3f* ptrPos = reinterpret_cast<Geom::Vec3f*>(m_vboPos->lockPtr());

Sylvain Thery's avatar
Sylvain Thery committed
56 57 58 59
	ptrPos[0] = Geom::Vec3f(-1,-1, 0.9999999f);
	ptrPos[1] = Geom::Vec3f( 1,-1, 0.9999999f);
	ptrPos[2] = Geom::Vec3f( 1, 1, 0.9999999f);
	ptrPos[3] = Geom::Vec3f(-1, 1, 0.9999999f);
Sylvain Thery's avatar
Sylvain Thery committed
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

	m_vboPos->releasePtr();

	bindVA_VBO("VertexPosition", m_vboPos);

	m_vboTexCoord = new Utils::VBO();
	m_vboTexCoord->setDataSize(2);

	m_vboTexCoord = new Utils::VBO();
	m_vboTexCoord->setDataSize(2);
	m_vboTexCoord->allocate(4);
	Geom::Vec2f* ptrTex = reinterpret_cast<Geom::Vec2f*>(m_vboTexCoord->lockPtr());

	ptrTex[0] = Geom::Vec2f(0.0,0.0);
	ptrTex[1] = Geom::Vec2f(1.0,0.0);
	ptrTex[2] = Geom::Vec2f(1.0,1.0);
	ptrTex[3] = Geom::Vec2f(0.0,1.0);

	m_vboTexCoord->releasePtr();

	bindVA_VBO("VertexTexCoord", m_vboTexCoord);
}

ShaderWallPaper::~ShaderWallPaper()
{
	delete m_vboPos;
	delete m_vboTexCoord;
}

void ShaderWallPaper::setTextureUnit(GLenum texture_unit)
{
	this->bind();
	int unit = texture_unit - GL_TEXTURE0;
	glUniform1iARB(*m_unif_unit,unit);
	m_unit = unit;
}

void ShaderWallPaper::setTexture(Utils::GTexture* tex)
{
	m_tex_ptr = tex;
}

void ShaderWallPaper::activeTexture()
{
	glActiveTexture(GL_TEXTURE0 + m_unit);
	m_tex_ptr->bind();
}

void ShaderWallPaper::activeTexture(CGoGNGLuint texId)
{
	glActiveTexture(GL_TEXTURE0 + m_unit);
	glBindTexture(GL_TEXTURE_2D, *texId);
}

void ShaderWallPaper::restoreUniformsAttribs()
{
	m_unif_unit = glGetUniformLocation(this->program_handler(), "textureUnit");

	bindVA_VBO("VertexPosition", m_vboPos);
	bindVA_VBO("VertexTexCoord", m_vboTexCoord);
	
	this->bind();
	glUniform1iARB(*m_unif_unit,m_unit);
	this->unbind();
}

void ShaderWallPaper::draw()
{
	this->activeTexture();
	this->enableVertexAttribs();
	glDrawArrays(GL_QUADS, 0, 4);
	this->disableVertexAttribs();
}

} // namespace Utils

} // namespace CGoGN