void Shader::initialize()
{
light.Position = glm::vec3(0, 0, 2);
light.Color = glm::vec3(1, 1, 1);
glUseProgram(program);
positionHandle = safe_glGetAttribLocation(program, "position");
normalHandle = safe_glGetAttribLocation(program, "normal");
projMatrixHandle = safe_glGetUniformLocation(program, "projMatrix");
viewMatrixHandle = safe_glGetUniformLocation(program, "viewMatrix");
modelMatrixHandle = safe_glGetUniformLocation(program, "modelMatrix");
materialHandle.Diffuse = safe_glGetUniformLocation(program,
"material.diffuse");
materialHandle.Specular = safe_glGetUniformLocation(program,
"material.specular");
materialHandle.Ambient = safe_glGetUniformLocation(program,
"material.ambient");
materialHandle.Shininess = safe_glGetUniformLocation(program,
"material.shininess");
lightHandle.Position = safe_glGetUniformLocation(program, "light.position");
lightHandle.Color = safe_glGetUniformLocation(program, "light.color");
printf("sucessfully installed shader %d\n", program);
}
/*function to help load the shader */
int InstallShader(const GLchar *vShaderName) {
GLuint VS; //handles to shader object
GLint vCompiled, linked; //status of shader
VS = glCreateShader(GL_VERTEX_SHADER);
//load the source
glShaderSource(VS, 1, &vShaderName, NULL);
//compile shader and print log
glCompileShader(VS);
/* check shader status requires helper functions */
printOpenGLError();
glGetShaderiv(VS, GL_COMPILE_STATUS, &vCompiled);
printShaderInfoLog(VS);
if (!vCompiled) {
printf("Error compiling the shader %s", vShaderName);
return 0;
}
//create a program object and attach the compiled shader
ShadeProg = glCreateProgram();
glAttachShader(ShadeProg, VS);
glLinkProgram(ShadeProg);
/* check shader status requires helper functions */
printOpenGLError();
glGetProgramiv(ShadeProg, GL_LINK_STATUS, &linked);
printProgramInfoLog(ShadeProg);
glUseProgram(ShadeProg);
/* get handles to attribute data */
h_aPosition = safe_glGetAttribLocation(ShadeProg, "aPosition");
h_aColor = safe_glGetAttribLocation(ShadeProg, "aColor");
printf("sucessfully installed shader %d\n", ShadeProg);
return 1;
}
/* for this assignment we are doing anything interesting with the fragment sahder */
int InstallShader(const GLchar *vShaderName, const GLchar *fShaderName) {
GLuint VS; //handles to shader object
GLuint FS; //handles to frag shader object
GLint vCompiled, fCompiled, linked; //status of shader
printf("IS1\n");
VS = glCreateShader(GL_VERTEX_SHADER);
FS = glCreateShader(GL_FRAGMENT_SHADER);
printf("IS3\n");
//load the source
glShaderSource(VS, 1, &vShaderName, NULL);
glShaderSource(FS, 1, &fShaderName, NULL);
printf("IS2\n");
//compile shader and print log
glCompileShader(VS);
/* check shader status requires helper functions */
glGetShaderiv(VS, GL_COMPILE_STATUS, &vCompiled);
//compile shader and print log
glCompileShader(FS);
/* check shader status requires helper functions */
glGetShaderiv(FS, GL_COMPILE_STATUS, &fCompiled);
if (!vCompiled || !fCompiled) {
printf("Error compiling either shader %s or %s", vShaderName, fShaderName);
return 0;
}
//create a program object and attach the compiled shader
ShadeProg = glCreateProgram();
glAttachShader(ShadeProg, VS);
glAttachShader(ShadeProg, FS);
glLinkProgram(ShadeProg);
/* check shader status requires helper functions */
glGetProgramiv(ShadeProg, GL_LINK_STATUS, &linked);
glUseProgram(ShadeProg);
printf("IS10\n");
/* get handles to attribute and uniform data in shader */
/* get handles to attribute data */
h_aPosition = safe_glGetAttribLocation(ShadeProg, "aPosition");
h_aNormal = safe_glGetAttribLocation(ShadeProg, "aNormal");
h_uProjMatrix = safe_glGetUniformLocation(ShadeProg, "uProjMatrix");
h_uViewMatrix = safe_glGetUniformLocation(ShadeProg, "uViewMatrix");
h_uModelMatrix = safe_glGetUniformLocation(ShadeProg, "uModelMatrix1");
h_uLightVec = safe_glGetUniformLocation(ShadeProg, "aLightVec");
h_uLightColor = safe_glGetUniformLocation(ShadeProg, "uLColor");
h_uMatAmb = safe_glGetUniformLocation(ShadeProg, "uMat.aColor");
h_uMatDif = safe_glGetUniformLocation(ShadeProg, "uMat.dColor");
h_uMatSpec = safe_glGetUniformLocation(ShadeProg, "uMat.sColor");
h_uMatShine = safe_glGetUniformLocation(ShadeProg, "uMat.shine");
h_uCamPos = safe_glGetUniformLocation(ShadeProg, "uCamPos");
h_uShadeMode = safe_glGetUniformLocation(ShadeProg, "uShadeMode");
printf("sucessfully installed shader %d\n", ShadeProg);
return 1;
}
/*function to help load the shader - note current version only loading a vertex shader */
int InstallShader(const GLchar *vShaderName, const GLchar *fShaderName) {
GLuint VS, FS; //handles to shader Model
GLint vCompiled, fCompiled, linked; //status of shader
VS = glCreateShader(GL_VERTEX_SHADER);
FS = glCreateShader(GL_FRAGMENT_SHADER);
//load the source
glShaderSource(VS, 1, &vShaderName, NULL);
glShaderSource(FS, 1, &fShaderName, NULL);
//compile shader and print log
glCompileShader(VS);
/* check shader status requires helper functions */
printOpenGLError();
glGetShaderiv(VS, GL_COMPILE_STATUS, &vCompiled);
printShaderInfoLog(VS);
//compile shader and print log
glCompileShader(FS);
/* check shader status requires helper functions */
printOpenGLError();
glGetShaderiv(FS, GL_COMPILE_STATUS, &fCompiled);
printShaderInfoLog(FS);
if (!vCompiled || !fCompiled) {
printf("Error compiling the shader %s", vShaderName);
return 0;
}
//create a program Model and attach the compiled shader
ShadeProg = glCreateProgram();
glAttachShader(ShadeProg, VS);
glAttachShader(ShadeProg, FS);
glLinkProgram(ShadeProg);
/* check shader status requires helper functions */
printOpenGLError();
glGetProgramiv(ShadeProg, GL_LINK_STATUS, &linked);
printProgramInfoLog(ShadeProg);
glUseProgram(ShadeProg);
/* get handles to attribute data */
h_aPosition = safe_glGetAttribLocation(ShadeProg, "aPosition");
h_aNormal = safe_glGetAttribLocation(ShadeProg, "aNormal");
h_uProjMatrix = safe_glGetUniformLocation(ShadeProg, "uProjMatrix");
h_uViewMatrix = safe_glGetUniformLocation(ShadeProg, "uViewMatrix");
h_uModelMatrix = safe_glGetUniformLocation(ShadeProg, "uModelMatrix");
h_uShadeType = safe_glGetUniformLocation(ShadeProg, "uShadeType");
h_uCamPos = safe_glGetUniformLocation(ShadeProg, "uCamPos");
h_uSun = safe_glGetUniformLocation(ShadeProg, "uSun");
h_uLightColor = safe_glGetUniformLocation(ShadeProg, "uLColor");
h_uMatAmb = safe_glGetUniformLocation(ShadeProg, "uMat.aColor");
h_uMatDif = safe_glGetUniformLocation(ShadeProg, "uMat.dColor");
h_uMatSpec = safe_glGetUniformLocation(ShadeProg, "uMat.sColor");
h_uMatShine = safe_glGetUniformLocation(ShadeProg, "uMat.shine");
h_aTexCoord = safe_glGetAttribLocation(ShadeProg, "aTexCoord");
h_uTexUnit = safe_glGetUniformLocation(ShadeProg, "uTexUnit");
printf("sucessfully installed shader %d\n", ShadeProg);
return 1;
}
