void LoadTexture(){
glGenTextures( 1, &texture);
glBindTexture( GL_TEXTURE_2D, texture);
imgdata image_data = loadJpeg("wooden-crate.jpg");
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image_data.width, image_data.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image_data.data);
//free( imgdata );
GLuint utex= glGetUniformLocation(shader3dprogram, "tex");
if(utex == -1){
throw std::runtime_error(std::string("program uniform not found: tex"));
}
glUniform1i(utex, texture);
}
int main(int argc, char *argv[]){
if(!glfwInit()){
throw std::runtime_error("glfwInit failed");
}
glfwOpenWindowHint(0, GLFW_OPENGL_CORE_PROFILE);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 1);
glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, GL_TRUE);
if(!glfwOpenWindow(800, 600, 8, 8, 8, 8, 0, 0, GLFW_WINDOW)){
throw std::runtime_error("glfwOpenWindow failed. does this hardware work with 3.1");
}
glewExperimental = GL_TRUE;
if(glewInit() != GLEW_OK){
throw std::runtime_error("glewInit failed");
}
if(!GLEW_VERSION_3_1){
throw std::runtime_error("OpenGL 3.1 API is not available");
}
printf("loading vertex shader\n");
handleShader("vertex.shader", GL_VERTEX_SHADER);
printf("loading fragment shader\n");
handleShader("fragment.shader", GL_FRAGMENT_SHADER);
printf("Shaders loaded\n");
printf("Building shader program\n");
shaderprogram = glCreateProgram();
if(shaderprogram == 0){
throw std::runtime_error("glCreateProgram failed");
}
glAttachShader(shaderprogram, vertshader);
glAttachShader(shaderprogram, fragshader);
glLinkProgram(shaderprogram);
GLint status;
glGetProgramiv(shaderprogram, GL_LINK_STATUS, &status);
if(status == GL_FALSE){
std::string msg("Program linking failure: ");
GLint infologlen;
glGetProgramiv(shaderprogram, GL_INFO_LOG_LENGTH, &infologlen);
char* strinfolog = new char[infologlen + 1];
glGetProgramInfoLog(shaderprogram, infologlen, NULL, strinfolog);
msg += strinfolog;
delete[] strinfolog;
glDeleteProgram(shaderprogram);
throw std::runtime_error(msg);
}
GLint vertprog = glGetAttribLocation(shaderprogram,"vert");
GLint verttexprog = glGetAttribLocation(shaderprogram,"vertTexCoord");
//bind VAO
glGenVertexArrays(1, &cubeVAO);
glBindVertexArray(cubeVAO);
//bind VBO
glGenBuffers(1, &cubeVBO);
glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(data), data, GL_STATIC_DRAW);
glEnableVertexAttribArray(vertprog);
glVertexAttribPointer(vertprog, 3, GL_FLOAT, GL_FALSE, 5*sizeof(GLfloat), NULL);
glEnableVertexAttribArray(verttexprog);
glVertexAttribPointer(verttexprog, 2, GL_FLOAT, GL_TRUE, 5*sizeof(GLfloat), (const GLvoid*)(3*sizeof(GLfloat)));
uniform = glGetUniformLocation(shaderprogram, "tex");
glBindVertexArray(0);
glGenTextures( 1, &texture);
glBindTexture( GL_TEXTURE_2D, texture);
imgdata image_data = loadJpeg("new.jpg");
//imgdata image_data = loadRaw("texture.bmp", 256, 256);
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);
//glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 256, 256, 0, GL_RGB, GL_UNSIGNED_BYTE, image_data.data);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image_data.width, image_data.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image_data.data);
//free( imgdata );
while(glfwGetWindowParam(GLFW_OPENED)){
display();
}
glfwTerminate();
return 0;
}
bool UrlValue::loadImg(UrlValue_Img &img) const {
return loadPng(img) || loadJpeg(img);
}