shaderFlat.cpp 4.78 KB
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/*******************************************************************************
* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
* version 0.1                                                                  *
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* Copyright (C) 2009-2012, IGG Team, LSIIT, University of Strasbourg           *
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*                                                                              *
* 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.           *
*                                                                              *
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* Web site: http://cgogn.unistra.fr/                                           *
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* Contact information: cgogn@unistra.fr                                        *
*                                                                              *
*******************************************************************************/

#include <string.h>
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#include "Utils/Shaders/shaderFlat.h"
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namespace CGoGN
{
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namespace Utils
{
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#include "shaderFlat.vert"
#include "shaderFlat.frag"
#include "shaderFlat.geom"

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ShaderFlat::ShaderFlat()
{
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	m_nameVS = "ShaderFlat_vs";
	m_nameFS = "ShaderFlat_fs";
	m_nameGS = "ShaderFlat_gs";

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	std::string glxvert(*GLSLShader::DEFINES_GL);
	glxvert.append(vertexShaderText);

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	std::string glxgeom = GLSLShader::defines_Geom("triangles", "triangle_strip", 3);
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	glxgeom.append(geometryShaderText);

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

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	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str(), glxgeom.c_str(), GL_TRIANGLES, GL_TRIANGLE_STRIP,3);
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	getLocations();
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	//Default values
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	m_explode = 1.0f;
	m_ambiant = Geom::Vec4f(0.05f, 0.05f, 0.1f, 0.0f);
	m_diffuse = Geom::Vec4f(0.1f, 1.0f, 0.1f, 0.0f);
	m_light_pos = Geom::Vec3f(10.0f, 10.0f, 1000.0f);
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	setParams(m_explode, m_ambiant, m_diffuse, m_light_pos);
}

void ShaderFlat::getLocations()
{
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	*m_unif_explode  = glGetUniformLocation(program_handler(),"explode");
	*m_unif_ambiant  = glGetUniformLocation(program_handler(),"ambient");
	*m_unif_diffuse  = glGetUniformLocation(program_handler(),"diffuse");
	*m_unif_lightPos = glGetUniformLocation(program_handler(),"lightPosition");
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}
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void ShaderFlat::setAttributePosition(VBO* vbo)
{
	m_vboPos = vbo;
	bindVA_VBO("VertexPosition", vbo);
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}

void ShaderFlat::setParams(float expl, const Geom::Vec4f& ambiant, const Geom::Vec4f& diffuse, const Geom::Vec3f& lightPos)
{
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	m_explode = expl;
	m_ambiant = ambiant;
	m_diffuse = diffuse;
	m_light_pos = lightPos;

	bind();
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	glUniform1f(*m_unif_explode, expl);
	glUniform4fv(*m_unif_ambiant, 1, ambiant.data());
	glUniform4fv(*m_unif_diffuse, 1, diffuse.data());
	glUniform3fv(*m_unif_lightPos, 1, lightPos.data());
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	unbind(); // ??
}

void ShaderFlat::setExplode(float explode)
{
	m_explode = explode;
	bind();
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	glUniform1f(*m_unif_explode, explode);
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}

void ShaderFlat::setAmbiant(const Geom::Vec4f& ambiant)
{
	m_ambiant = ambiant;
	bind();
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	glUniform4fv(*m_unif_ambiant,1, ambiant.data());
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}

void ShaderFlat::setDiffuse(const Geom::Vec4f& diffuse)
{
	m_diffuse = diffuse;
	bind();
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	glUniform4fv(*m_unif_diffuse,1, diffuse.data());
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}

void ShaderFlat::setLightPosition(const Geom::Vec3f& lp)
{
	m_light_pos = lp;
	bind();
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	glUniform3fv(*m_unif_lightPos,1,lp.data());
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}

void ShaderFlat::restoreUniformsAttribs()
{
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	*m_unif_explode   = glGetUniformLocation(program_handler(),"explode");
	*m_unif_ambiant   = glGetUniformLocation(program_handler(),"ambient");
	*m_unif_diffuse   = glGetUniformLocation(program_handler(),"diffuse");
	*m_unif_lightPos =  glGetUniformLocation(program_handler(),"lightPosition");
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	bind();
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	glUniform1f (*m_unif_explode, m_explode);
	glUniform4fv(*m_unif_ambiant,  1, m_ambiant.data());
	glUniform4fv(*m_unif_diffuse,  1, m_diffuse.data());
	glUniform3fv(*m_unif_lightPos, 1, m_light_pos.data());
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	bindVA_VBO("VertexPosition", m_vboPos);
	unbind();
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}

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} // namespace Utils
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} // namespace CGoGN