//----------------------------------------------------------------------------------------------------------------------
void grassHair::createShader(){
//create our shader program
m_shaderProgram = new ShaderProgram();
Shader *vert = new Shader("shaders/grassHairVert.glsl", GL_VERTEX_SHADER);
Shader *geom = new Shader("shaders/grassHairGeom.glsl", GL_GEOMETRY_SHADER);
Shader *frag = new Shader("shaders/grassHairFrag.glsl", GL_FRAGMENT_SHADER);
//attach and link our shaders to our program
m_shaderProgram->attachShader(vert);
m_shaderProgram->attachShader(geom);
m_shaderProgram->attachShader(frag);
m_shaderProgram->link();
m_shaderProgram->use();
//get rid of the junk
delete vert;
delete geom;
delete frag;
glEnable(GL_DEPTH_TEST); // for removal of hidden surfaces
//set up our light
GLuint lightPosGrassLoc = m_shaderProgram->getUniformLoc("light.position");
GLuint lightIntGrassLoc = m_shaderProgram->getUniformLoc("light.intensity");
GLuint kdGrassLoc = m_shaderProgram->getUniformLoc("Kd");
GLuint kaGrassLoc = m_shaderProgram->getUniformLoc("Ka");
GLuint ksGrassLoc = m_shaderProgram->getUniformLoc("Ks");
GLuint shininessGrassLoc = m_shaderProgram->getUniformLoc("shininess");
glm::vec4 lightPositon(1.0, 1.0, 1.0, 1.0);
glm::vec3 lightIntensity(0.8, 0.8, 0.8);
glUniform4f(lightPosGrassLoc, lightPositon.x, lightPositon.y, lightPositon.z, lightPositon.w);
glUniform3f(lightIntGrassLoc, lightIntensity.x, lightIntensity.y, lightIntensity.z);
glUniform3f(kdGrassLoc, 0.5, 0.5, 0.5);
glUniform3f(kaGrassLoc, 0.5, 0.5, 0.5);
glUniform3f(ksGrassLoc, 0.5, 0.5, 0.5);
glUniform1f(shininessGrassLoc, 100.0);
//set our grass size
GLuint grassSizeLoc = m_shaderProgram->getUniformLoc("grassSize");
glUniform1f(grassSizeLoc,m_grassSize);
//set up our grass texture
m_grassTexture = new Texture("textures/grassBlade.png");
m_grassTexture->bind(10);
GLuint grassBladeTexLoc = m_shaderProgram->getUniformLoc("grassTexture");
glUniform1i(grassBladeTexLoc, 10);
}
//----------------------------------------------------------------------------------------------------------------------
void grassHairClipmap::createShader(){
//create our shader program
m_shaderProgram = new ShaderProgram();
Shader *vert = new Shader("shaders/grassHairClipmapVert.glsl", GL_VERTEX_SHADER);
Shader *geom = new Shader("shaders/grassHairClipmapGeom.glsl", GL_GEOMETRY_SHADER);
Shader *frag = new Shader("shaders/grassHairClipmapFrag.glsl", GL_FRAGMENT_SHADER);
//attach and link our shaders to our program
m_shaderProgram->attachShader(vert);
m_shaderProgram->attachShader(geom);
m_shaderProgram->attachShader(frag);
m_shaderProgram->link();
m_shaderProgram->use();
//get rid of the junk
delete vert;
delete geom;
delete frag;
glEnable(GL_DEPTH_TEST); // for removal of hidden surfaces
//set up our light
GLuint lightPosGrassLoc = m_shaderProgram->getUniformLoc("light.position");
GLuint lightIntGrassLoc = m_shaderProgram->getUniformLoc("light.intensity");
GLuint kdGrassLoc = m_shaderProgram->getUniformLoc("Kd");
GLuint kaGrassLoc = m_shaderProgram->getUniformLoc("Ka");
GLuint ksGrassLoc = m_shaderProgram->getUniformLoc("Ks");
GLuint shininessGrassLoc = m_shaderProgram->getUniformLoc("shininess");
glm::vec4 lightPositon(1.0, 1.0, 1.0, 1.0);
glm::vec3 lightIntensity(0.8, 0.8, 0.8);
glUniform4f(lightPosGrassLoc, lightPositon.x, lightPositon.y, lightPositon.z, lightPositon.w);
glUniform3f(lightIntGrassLoc, lightIntensity.x, lightIntensity.y, lightIntensity.z);
glUniform3f(kdGrassLoc, 0.5, 0.5, 0.5);
glUniform3f(kaGrassLoc, 0.5, 0.5, 0.5);
glUniform3f(ksGrassLoc, 0.5, 0.5, 0.5);
glUniform1f(shininessGrassLoc, 100.0);
//set our grass size
GLuint grassSizeLoc = m_shaderProgram->getUniformLoc("grassSize");
GLuint grassHeightLoc = m_shaderProgram->getUniformLoc("grassHeight");
GLuint heightMapLoc = m_shaderProgram->getUniformLoc("geoTexture");
GLuint heightScaleLoc = m_shaderProgram->getUniformLoc("heightScale");
m_timeLoc = m_shaderProgram->getUniformLoc("time");
GLuint windDirLoc = m_shaderProgram->getUniformLoc("windDir");
GLuint windStrengthLoc = m_shaderProgram->getUniformLoc("windStrength");
GLuint scaleLoc = m_shaderProgram->getUniformLoc("scale");
glUniform1f(heightScaleLoc,4);
glUniform4f(scaleLoc, 2, 2, 2, 1.0);
glUniform1f(windStrengthLoc,0.01);
glUniform3f(windDirLoc,1.0,0.0,0.0);
glUniform1f(m_timeLoc,clock()/CLOCKS_PER_SEC);
glUniform1f(grassHeightLoc,m_grassHeight);
glUniform1f(grassSizeLoc,m_grassSize);
//set up our grass texture
m_grassTexture = new Texture("textures/grassBlade.png");
m_grassTexture->bind(10);
GLuint grassBladeTexLoc = m_shaderProgram->getUniformLoc("grassTexture");
glUniform1i(grassBladeTexLoc, 10);
m_heightmapTex->bind(2);
glUniform1i(heightMapLoc,2);
// fog uniforms
GLuint fogMaxLoc = m_shaderProgram->getUniformLoc("fogMax");
GLuint fogMinLoc = m_shaderProgram->getUniformLoc("fogMin");
glUniform1f(fogMaxLoc, 4.0);
glUniform1f(fogMinLoc, 3.0);
}
