static inline void _setup_camera(game *g) {
if (g->d.ortho) {
mat4x4_ortho(g->d.proj, -g->aspect, g->aspect, -1, 1, 0.001, 1000);
} else {
mat4x4_perspective(g->d.proj, 45.0, g->aspect, 0.001, 1000.0);
}
vec3_sub(g->d.view_f, g->d.center, g->d.eye);
vec3_norm(g->d.view_f, g->d.view_f);
vec3_mul_cross(g->d.view_r, g->d.view_f, g->d.up);
vec3_norm(g->d.view_r, g->d.view_r);
vec3_mul_cross(g->d.view_u, g->d.view_r, g->d.view_f);
_calc_zoom(g, 0); // Update zoom for this view type
}
Camera* Camera_init(
vec3 const position,
float fov,
float aspect,
float zNear,
float zFar
) {
Camera* camera = malloc(sizeof(Camera));
camera->transform = Transform_init_default();
camera->transform.position[0] = position[0];
camera->transform.position[1] = position[1];
camera->transform.position[2] = position[2];
mat4x4_perspective(camera->projection, toRadians(fov), aspect, zNear, zFar);
return camera;
}
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
float ratio = 1.f;
mat4x4 projection;
if (height > 0)
ratio = (float) width / (float) height;
// Setup viewport
glViewport(0, 0, width, height);
// Change to the projection matrix and set our viewing volume
glMatrixMode(GL_PROJECTION);
mat4x4_perspective(projection,
60.f * (float) M_PI / 180.f,
ratio,
1.f, 1024.f);
glLoadMatrixf((const GLfloat*) projection);
}
/*****************************************************************************
* reshape()
*****************************************************************************/
void reshape( GLFWwindow* window, int w, int h )
{
mat4x4 projection, view;
glViewport( 0, 0, (GLsizei)w, (GLsizei)h );
glMatrixMode( GL_PROJECTION );
mat4x4_perspective( projection,
2.f * (float) atan2( RADIUS, 200.f ),
(float)w / (float)h,
1.f, VIEW_SCENE_DIST );
glLoadMatrixf((const GLfloat*) projection);
glMatrixMode( GL_MODELVIEW );
{
vec3 eye = { 0.f, 0.f, VIEW_SCENE_DIST };
vec3 center = { 0.f, 0.f, 0.f };
vec3 up = { 0.f, -1.f, 0.f };
mat4x4_look_at( view, eye, center, up );
}
glLoadMatrixf((const GLfloat*) view);
}
static void wolf_frame(struct point2 *position, struct vector2 *direction, float angle)
{
glClearColor(0,0,0,0);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
mat4x4 project;
mat4x4_identity(project);
mat4x4_perspective(project, degrees_to_radians(FOV), 640.0/480.0, 0.1f, 64.0f);
mat4x4_identity(model_view);
vec3 eye;
eye[0] = position->x;
eye[1] = 0.3;
eye[2] = position->y;
vec3 center;
center[0] = position->x+direction->x;
center[1] = 0.3;
center[2] = position->y+direction->y;
vec3 up;
up[0] = 0.0;
up[1] = 1.0;
up[2] = 0.0;
mat4x4_look_at(model_view, eye, center, up);
glMatrixMode(GL_PROJECTION);
glLoadMatrixf((const GLfloat*) project);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf((const GLfloat*) model_view);
glEnable(GL_DEPTH_TEST);
wolf_draw_floor();
wolf_raycast(position, angle, wolf_draw_wall);
}
static void draw_scene(GLFWwindow* window, double t)
{
double xpos, ypos, zpos, angle_x, angle_y, angle_z;
static double t_old = 0.0;
float dt;
mat4x4 projection;
// Calculate frame-to-frame delta time
dt = (float) (t - t_old);
t_old = t;
mat4x4_perspective(projection,
65.f * (float) M_PI / 180.f,
aspect_ratio,
1.0, 60.0);
glClearColor(0.1f, 0.1f, 0.1f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadMatrixf((const GLfloat*) projection);
// Setup camera
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// Rotate camera
angle_x = 90.0 - 10.0;
angle_y = 10.0 * sin(0.3 * t);
angle_z = 10.0 * t;
glRotated(-angle_x, 1.0, 0.0, 0.0);
glRotated(-angle_y, 0.0, 1.0, 0.0);
glRotated(-angle_z, 0.0, 0.0, 1.0);
// Translate camera
xpos = 15.0 * sin((M_PI / 180.0) * angle_z) +
2.0 * sin((M_PI / 180.0) * 3.1 * t);
ypos = -15.0 * cos((M_PI / 180.0) * angle_z) +
2.0 * cos((M_PI / 180.0) * 2.9 * t);
zpos = 4.0 + 2.0 * cos((M_PI / 180.0) * 4.9 * t);
glTranslated(-xpos, -ypos, -zpos);
glFrontFace(GL_CCW);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
setup_lights();
glEnable(GL_LIGHTING);
glEnable(GL_FOG);
glFogi(GL_FOG_MODE, GL_EXP);
glFogf(GL_FOG_DENSITY, 0.05f);
glFogfv(GL_FOG_COLOR, fog_color);
draw_floor();
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glDepthMask(GL_TRUE);
draw_fountain();
glDisable(GL_LIGHTING);
glDisable(GL_FOG);
// Particles must be drawn after all solid objects have been drawn
draw_particles(window, t, dt);
// Z-buffer not needed anymore
glDisable(GL_DEPTH_TEST);
}
int main(void)
{
Primative *edits[] = {
primative_create(CUBE, ADDITIVE),
primative_create(SPHERE, ADDITIVE),
primative_create(SPHERE, SUBTRACTIVE),
primative_create(SPHERE, ADDITIVE)
};
primative_scale(edits[0], 0.4, 1.0, 1.5);
primative_translate(edits[1], 0.2, 0, 0);
primative_translate(edits[2], -0.3, 0, 0);
primative_translate(edits[3], -0.5, 0, 0);
primative_scale(edits[3], 0.5, 0.5, 0.5);
edits[1]->blend = 0.2;
sdf_args.edits = edits;
sdf_args.num_edits = 4;
vec3 origin = {0, 0, 0};
vec3 halfDim = {1, 1, 1};
OctTree *tree = octTree_create(origin, halfDim);
octTree_populate(tree, distance);
int num_verticies = octTree_count(tree);
size_t vert_size = sizeof(Point);
fprintf(stdout, "num verts %d\n", num_verticies);
int vi = 0;
Point *verticies = malloc(num_verticies * vert_size);
octTree_get_points(tree, verticies, &vi);
GLFWwindow* window;
mat4x4 ident;
mat4x4_identity(ident);
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
window = glfwCreateWindow(640, 480, "speed dream", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
glfwSwapInterval(1);
glEnable(GL_PROGRAM_POINT_SIZE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glfwSetKeyCallback(window, key_callback);
mat4x4 proj;
mat4x4 view;
mat4x4 matrix;
mat4x4_identity(view);
mat4x4_identity(matrix);
vec3_set(camera.pos, 0.0f, 0.0f, 0.0f);
// Create Vertex Array Object
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
// Create a Vertex Buffer Object and copy the vertex data to it
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, num_verticies * vert_size, verticies, GL_STATIC_DRAW);
// Create and compile the shaders
GLuint vertexShader = loadShader(GL_VERTEX_SHADER, DREAM_VERT);
GLuint fragmentShader = loadShader(GL_FRAGMENT_SHADER, DREAM_FRAG);
// Link the vertex and fragment shader into a shader program
GLuint shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glBindFragDataLocation(shaderProgram, 0, "outColor");
glLinkProgram(shaderProgram);
glUseProgram(shaderProgram);
// Specify the layout of the vertex data
GLint posAttrib = glGetAttribLocation(shaderProgram, "position");
glEnableVertexAttribArray(posAttrib);
glVertexAttribPointer(posAttrib, 3, GL_FLOAT, GL_FALSE, vert_size, 0);
GLint normAttrib = glGetAttribLocation(shaderProgram, "normal");
glEnableVertexAttribArray(normAttrib);
glVertexAttribPointer(normAttrib, 3, GL_FLOAT, GL_FALSE, vert_size, (void*)(3 * sizeof(GLfloat)));
GLint colorAttrib = glGetAttribLocation(shaderProgram, "color");
glEnableVertexAttribArray(colorAttrib);
glVertexAttribPointer(colorAttrib, 3, GL_FLOAT, GL_FALSE, vert_size, (void*)(6 * sizeof(GLfloat)));
GLint uniModel = glGetUniformLocation(shaderProgram, "model");
GLint uniView = glGetUniformLocation(shaderProgram, "view");
GLint uniProj = glGetUniformLocation(shaderProgram, "proj");
vec3 lightPos = {3.f, 0.f, 3.f};
GLint uniLightPos = glGetUniformLocation(shaderProgram, "lightPos");
glUniform3fv(uniLightPos, 1, (const GLfloat *)&lightPos);
while (!glfwWindowShouldClose(window))
{
float ratio;
int width, height;
glfwGetFramebufferSize(window, &width, &height);
ratio = width / (float) height;
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
vec4 movement = {0, 0, 0, 1};
if (glfwGetKey(window, GLFW_KEY_RIGHT) == GLFW_PRESS)
movement[0] -= 0.1;
if (glfwGetKey(window, GLFW_KEY_LEFT) == GLFW_PRESS)
movement[0] += 0.1;
if (glfwGetKey(window, GLFW_KEY_UP) == GLFW_PRESS)
movement[2] += 0.1;
if (glfwGetKey(window, GLFW_KEY_DOWN) == GLFW_PRESS)
movement[2] -= 0.1;
if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
camera.pitch -= 0.05;
if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
camera.pitch += 0.05;
if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
camera.yaw += 0.05;
if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
camera.yaw -= 0.05;
mat4x4 pitch_mat;
mat4x4_identity(pitch_mat);
mat4x4_rotate_X(pitch_mat, pitch_mat, camera.pitch);
mat4x4 yaw_mat;
mat4x4_identity(yaw_mat);
mat4x4_rotate_Y(yaw_mat, yaw_mat, camera.yaw);
mat4x4 inv_yaw_mat;
mat4x4_invert(inv_yaw_mat, yaw_mat);
vec4 rotated_movement;
mat4x4_mul_vec4(rotated_movement, inv_yaw_mat, movement);
camera.pos[0] += rotated_movement[0];
camera.pos[1] += rotated_movement[1];
camera.pos[2] += rotated_movement[2];
mat4x4 translation_mat;
mat4x4_translate(translation_mat, camera.pos[0], camera.pos[1], camera.pos[2]);
mat4x4_mul(view, pitch_mat, yaw_mat);
mat4x4_mul(view, view, translation_mat);
glUniformMatrix4fv(uniView, 1, GL_FALSE, (const GLfloat *)&view);
mat4x4_perspective(proj, 60 * M_PI / 180, ratio, 0.1f, 10.0f);
glUniformMatrix4fv(uniProj, 1, GL_FALSE, (const GLfloat *)&proj);
glUniformMatrix4fv(uniModel, 1, GL_FALSE, (const GLfloat *)&matrix);
glDrawArrays(GL_POINTS, 0, num_verticies);
glfwSwapBuffers(window);
glfwPollEvents();
}
glDeleteProgram(shaderProgram);
glDeleteShader(fragmentShader);
glDeleteShader(vertexShader);
glDeleteBuffers(1, &vbo);
glDeleteVertexArrays(1, &vao);
glfwDestroyWindow(window);
free(verticies);
glfwTerminate();
exit(EXIT_SUCCESS);
}
int main(int argc, char** argv)
{
Settings settings;
ConstructSettings(&settings);
LoadSettingsFile(&settings, "settings.ini");
if(Init(&settings) < 0) return -1;
GLuint program;
if(SetupProgram(&program) < 0) return -2;
GLuint grid_vbuf = CreateGridVertexBuffer(settings.graphics.viewdistance);
int grid_icount;
GLuint grid_ibuf = CreateGridIndexBuffer(&grid_icount,
settings.graphics.viewdistance);
glUseProgram(program);
GLint grid_pos_loc = glGetAttribLocation(program, "grid_pos");
GLint grid_world_mat_loc = glGetUniformLocation(program, "world_mat");
GLint grid_view_mat_loc = glGetUniformLocation(program, "view_mat");
GLint grid_proj_mat_loc = glGetUniformLocation(program, "proj_mat");
GLint grid_color_loc = glGetUniformLocation(program, "color");
GLint grid_viewdistance_loc = glGetUniformLocation(program, "viewdistance");
glUniform3f(grid_color_loc, 0.f, 0.6f, 0.f);
glUniform1f(grid_viewdistance_loc, settings.graphics.viewdistance);
GLuint grid_vao;
glGenVertexArrays(1, &grid_vao);
glBindVertexArray(grid_vao);
glBindBuffer(GL_ARRAY_BUFFER, grid_vbuf);
glEnableVertexAttribArray(grid_pos_loc);
glVertexAttribPointer(grid_pos_loc, 2, GL_FLOAT, GL_FALSE, 0, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, grid_ibuf);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glClearColor(0.5f, 0.5f, 0.5f, 1.f);
glViewport(0, 0, settings.video.width, settings.video.height);
Node grid_node;
ConstructNode(&grid_node);
Camera camera;
ConstructCamera(&camera);
mat4x4 projection_matrix;
mat4x4_perspective(projection_matrix,
settings.video.pfov,
settings.video.width/(float)settings.video.height,
settings.video.pnear,
settings.video.pfar);
glUniformMatrix4fv(grid_proj_mat_loc, 1, GL_FALSE,
(const float*)projection_matrix);
float speed = 10.f;
Uint32 ticks = SDL_GetTicks();
State state = STATE_RUNNING | (settings.video.fullscreen ? STATE_FULLSCREEN : 0);
while(state & STATE_RUNNING)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(program);
glUniformMatrix4fv(grid_world_mat_loc, 1, GL_FALSE,
(const float*)grid_node.world_matrix);
glUniformMatrix4fv(grid_view_mat_loc, 1, GL_FALSE,
(const float*)camera.view_matrix);
glBindVertexArray(grid_vao);
glDrawElements(GL_TRIANGLE_STRIP, grid_icount, GL_UNSIGNED_INT, NULL);
SDL_GL_SwapWindow(window);
SDL_Event event;
while(SDL_PollEvent(&event))
{
switch(event.type)
{
case SDL_QUIT:
state &= ~STATE_RUNNING;
break;
case SDL_KEYUP:
switch(event.key.keysym.scancode)
{
case SDL_SCANCODE_F11:
state ^= STATE_FULLSCREEN;
SDL_SetWindowFullscreen
(
window,
state & STATE_FULLSCREEN ?
SDL_WINDOW_FULLSCREEN_DESKTOP : 0
);
break;
case SDL_SCANCODE_ESCAPE:
state ^= STATE_MOUSE_GRABBED;
SDL_SetRelativeMouseMode(state & STATE_MOUSE_GRABBED);
break;
case SDL_SCANCODE_LSHIFT:
speed = settings.controls.speed1;
break;
default:
break;
}
break;
case SDL_KEYDOWN:
switch(event.key.keysym.scancode)
{
case SDL_SCANCODE_LSHIFT:
speed = settings.controls.speed2;
break;
default:
break;
}
break;
case SDL_WINDOWEVENT:
if(event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)
{
int w = event.window.data1;
int h = event.window.data2;
glViewport(0, 0, w, h);
mat4x4_perspective(projection_matrix,
settings.video.pfov,
w/(float)h,
settings.video.pnear,
settings.video.pfar);
glUniformMatrix4fv(grid_proj_mat_loc, 1, GL_FALSE,
(const float*)projection_matrix);
}
break;
case SDL_MOUSEMOTION:
if(state & STATE_MOUSE_GRABBED)
{
camera.yaw -= settings.controls.xsensitivity *
event.motion.xrel;
camera.pitch -= settings.controls.xsensitivity *
event.motion.yrel;
}
break;
default:
break;
}
}
Uint32 nticks = SDL_GetTicks();
float delta = (nticks - ticks)/1000.f;
ticks = nticks;
const Uint8* keys = SDL_GetKeyboardState(NULL);
vec3 movement;
int i;
for(i = 0; i < 3; i++) movement[i] = 0.f;
SDL_bool moved = SDL_FALSE;
if(keys[SDL_SCANCODE_W] && !keys[SDL_SCANCODE_S])
{
vec3_add(movement, movement, camera.direction);
moved = SDL_TRUE;
}
else if(keys[SDL_SCANCODE_S] && !keys[SDL_SCANCODE_W])
{
vec3_sub(movement, movement, camera.direction);
moved = SDL_TRUE;
}
if(keys[SDL_SCANCODE_A] && !keys[SDL_SCANCODE_D])
{
vec3_sub(movement, movement, camera.right);
moved = SDL_TRUE;
}
else if(keys[SDL_SCANCODE_D] && !keys[SDL_SCANCODE_A])
{
vec3_add(movement, movement, camera.right);
moved = SDL_TRUE;
}
if(keys[SDL_SCANCODE_Q] && !keys[SDL_SCANCODE_E])
{
vec3_sub(movement, movement, camera.up);
moved = SDL_TRUE;
}
else if(keys[SDL_SCANCODE_E] && !keys[SDL_SCANCODE_Q])
{
vec3_add(movement, movement, camera.up);
moved = SDL_TRUE;
}
if(moved)
{
vec3_norm(movement, movement);
vec3_scale(movement, movement, delta * speed);
vec3_add(camera.node.translation, camera.node.translation,
movement);
}
UpdateCamera(&camera);
if(moved)
{
vec2 tmp1;
tmp1[0] = camera.node.position[0];
tmp1[1] = camera.node.position[2];
vec2 tmp2;
tmp2[0] = grid_node.position[0];
tmp2[1] = grid_node.position[2];
vec2_sub(tmp1, tmp1, tmp2);
tmp1[0] = floor(tmp1[0]);
tmp1[1] = floor(tmp1[1]);
grid_node.translation[0] += tmp1[0];
grid_node.translation[2] += tmp1[1];
UpdateNode(&grid_node);
}
}
glDeleteVertexArrays(1, &grid_vao);
glDeleteBuffers(1, &grid_vbuf);
glDeleteBuffers(1, &grid_ibuf);
glDeleteProgram(program);
return 0;
}
int main(void)
{
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
GLFWmonitor *monitor = glfwGetPrimaryMonitor();
const GLFWvidmode *mode = glfwGetVideoMode(monitor);
printf("monitor mode: %d, %d\n", mode->width, mode->height);
// if DEBUG {
// glfw.WindowHint(glfw.OpenGLDebugContext, gl.TRUE)
// }
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, 1);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
GLFWwindow *window = glfwCreateWindow(mode->width, mode->height, "Hialin", NULL, NULL);
if (!window) {
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
glfwSwapInterval(0);
p_glBindFragDataLocation = (glBindFragDataLocation_t)glfwGetProcAddress("glBindFragDataLocation");
if (!p_glBindFragDataLocation) {
printf("\n failed glBindFragDataLocation");
glfwTerminate();
exit(EXIT_FAILURE);
}
p_glGenVertexArrays = (glGenVertexArrays_t)glfwGetProcAddress("glGenVertexArrays");
if (!p_glGenVertexArrays) {
printf("\n failed glGenVertexArrays");
glfwTerminate();
exit(EXIT_FAILURE);
}
p_glBindVertexArray = (glBindVertexArray_t)glfwGetProcAddress("glBindVertexArray");
if (!p_glBindVertexArray) {
printf("\n failed glBindVertexArray");
glfwTerminate();
exit(EXIT_FAILURE);
}
GLuint vsh = glCreateShader(GL_VERTEX_SHADER);
{
glShaderSource(vsh, 1, &vertex_shader_text, NULL);
glCompileShader(vsh);
int result;
glGetShaderiv(vsh, GL_COMPILE_STATUS, &result );
if (result == GL_FALSE) {
int logLength;
glGetShaderiv(vsh, GL_INFO_LOG_LENGTH, &logLength);
char log[10*1024] = {0};
glGetShaderInfoLog(vsh, logLength, NULL, log);
printf("\nvertex shader compile: %s", log);
glfwTerminate();
exit(EXIT_FAILURE);
}
}
glCheck();
GLuint fsh = glCreateShader(GL_FRAGMENT_SHADER);
{
glShaderSource(fsh, 1, &fragment_shader_text, NULL);
glCompileShader(fsh);
int result;
glGetShaderiv(fsh, GL_COMPILE_STATUS, &result);
if (result == GL_FALSE) {
int logLength;
glGetShaderiv(fsh, GL_INFO_LOG_LENGTH, &logLength);
char log[10*1024] = {0};
glGetShaderInfoLog(fsh, logLength, NULL, log);
printf("\nfragment shader compile: %s", log);
glfwTerminate();
exit(EXIT_FAILURE);
}
}
glCheck();
GLuint program = glCreateProgram();
{
glAttachShader(program, vsh);
glAttachShader(program, fsh);
glLinkProgram(program);
int result;
glGetProgramiv(program, GL_LINK_STATUS, &result);
if (result == GL_FALSE) {
int logLength;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &logLength);
char log[10*1024] = {0};
glGetProgramInfoLog(program, logLength, NULL, log);
printf("\nprogram link: \n%s", log);
glfwTerminate();
exit(EXIT_FAILURE);
}
}
glCheck();
glUseProgram(program);
glCheck();
GLint projectionU = glGetUniformLocation(program, "projection");
mat4x4 camera;
vec3 eye = {3, 3, 3}, center = {0, 0, 0}, up = {0, 1, 0};
mat4x4_look_at(camera, eye, center, up);
GLint cameraU = glGetUniformLocation(program, "camera");
glUniformMatrix4fv(cameraU, 1, GL_FALSE, (const float*)camera);
glCheck();
mat4x4 model;
mat4x4_identity(model);
GLint modelU = glGetUniformLocation(program, "model");
glUniformMatrix4fv(modelU, 1, GL_FALSE, (const float*)model);
glCheck();
GLint texU = glGetUniformLocation(program, "tex");
glUniform1i(texU, 0);
p_glBindFragDataLocation(program, 0, "outputColor");
glCheck();
// Load the texture
// char *texturePath = "./Resources/code.png"
// GLuint texture = MakeTexture(0, texturePath);
GLuint texture = MakeTexture(0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glCheck();
// Configure the vertex data
GLuint vao;
p_glGenVertexArrays(1, &vao);
p_glBindVertexArray(vao);
glCheck();
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(cube_vertices), cube_vertices, GL_STATIC_DRAW);
glCheck();
GLuint val = glGetAttribLocation(program, "vert");
glEnableVertexAttribArray(val);
glVertexAttribPointer(val, 3, GL_FLOAT, GL_FALSE, 5*4, (const void *)(0*4));
glCheck();
GLuint valTC = glGetAttribLocation(program, "vertTexCoord");
glEnableVertexAttribArray(valTC);
glVertexAttribPointer(valTC, 2, GL_FLOAT, GL_FALSE, 5*4, (const void *)(3*4));
glCheck();
// Configure global settings
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glClearColor(0.0, 0.0, 0.0, 1.0);
glCheck();
long time0 = tick();
float angle = 0.01;
int width = 0, height = 0;
int i = 0;
while (!glfwWindowShouldClose(window))
{
int w, h;
glfwGetFramebufferSize(window, &w, &h);
if (w != width || h != height) {
width = w;
height = h;
glViewport(0, 0, width, height);
printf("buffer size: %d %d\n", w, h);
}
float ratio = width/(float)height;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
mat4x4_rotate_Y(model, model, angle);
mat4x4 projection;
mat4x4_perspective(projection, 0.785, ratio, 0.1, 10.0); // 45 degrees == 0.785 radians
glUniformMatrix4fv(projectionU, 1, GL_FALSE, (const float*)projection);
glUniformMatrix4fv(modelU, 1, GL_FALSE, (const float*)model);
for (int i = 0; i < 1*1000; i++) {
glDrawArrays(GL_TRIANGLES, 0, 6*2*3); // 12 triangles
}
i++;
if (i == 100) {
printf("time for 100 frames: %ld\n", tick()-time0);
} else if (i == 1000) {
printf("time for 1000 frames: %ld\n", tick()-time0);
break;
}
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}
