ViewBackendIntelCE::ViewBackendIntelCE()
: m_width(WIDTH)
, m_height(HEIGHT)
{
gdl_plane_id_t plane = GDL_PLANE_ID_UPP_C;
gdl_init(0);
setup_plane(plane);
}
static void IntelCE_InitCursor()
{
/* Initialize the gdl layer */
gdl_plane_id_t plane = GDL_PLANE_ID_IAP_B;
gdl_init(0);
setup_plane(plane);
return;
}
int main(int argc, char *argv[])
{
EGLDisplay display = EGL_NO_DISPLAY;
EGLSurface surface = EGL_NO_SURFACE;
EGLContext context = EGL_NO_CONTEXT;
GLfloat rotation_x = 0; /* angle for rotation in x direction */
GLfloat rotation_y = 0; /* angle for rotation in y direction */
GLuint vertexShaderId = 0; /* vertex shader id */
GLuint fragmentShaderId = 0; /* fragment shader id */
GLuint programId = 0; /* program id */
int mvpLoc = 0; /* for the uniform varible index value of mvp matrix */
int status; /* function call's return value */
unsigned int frame_count = 0;
gdl_init(0);
setup_plane(GDL_PLANE_ID_UPP_B, true);
status = setup_egl(GDL_PLANE_ID_UPP_B, &display, &surface, &context);
if (status != GL_TRUE)
{
printf("error setting egl\n");
return 1;
}
status = setup_gl(&programId, &vertexShaderId, &fragmentShaderId, &mvpLoc);
if (status != GL_TRUE)
{
printf("error setting gl\n");
return 1;
}
int frame = 0;
struct timeval start;
gettimeofday(&start, NULL);
struct timeval now;
struct timeval sub;
int duration;
while (1)
{
render(rotation_x, rotation_y, mvpLoc);
eglSwapBuffers(display, surface);
frame++;
rotation_x += 5.0f;
if (rotation_x > 360.0f)
{
rotation_x = 0.0f;
}
rotation_y += 2.0f;
if (rotation_y > 360.0f)
{
rotation_y = 0.0f;
}
gettimeofday(&now, NULL);
timeval_subtract(&sub, &now, &start);
duration = (sub.tv_usec + sub.tv_sec*1000000) / 1000;
if (duration > 5000)
{
printf("CUBE FPS = %d\n", duration / frame);
frame = 0;
start = now;
}
}
}
/*
* create an octree, load the heightmap, load all
* map quads into object structures and place them
* in the appropriate leaf nodes of the octree
*/
struct map *
load_map(const char *filename)
{
unsigned int i, j, k;
unsigned char *data;
unsigned int width, height;
int type;
unsigned int tilesize = 8;
float xydiv = 1.0f;
float zdiv = 9.0f;
static struct map map_structure;
struct vertex vertices[4];
struct object *o;
struct plane_object *p;
struct octree_node *on;
/* data is a pointer to the raw rgb data of the heightmap */
data = (unsigned char *)read_png(filename, &width, &height, &type);
if(!data) {
fprintf(stderr, "Error: Couldn't load heightmap %s\n", filename);
return NULL;
}
map_structure.octree = new_octree_branch(NULL, -((float)width / xydiv), (float)width / xydiv, -((float)height / xydiv), (float)height / xydiv, -255.0f, 255.0f);
if(!map_structure.octree) {
fprintf(stderr, "Error: Couldn't create octree\n");
free(data);
return NULL;
}
snprintf(map_structure.skypic, 256, "data/sky.png");
/*
* create map quads from heightmap; the z value of each
* point is taken from the pixel corresponding to the
* current position on the heightmap using the get_pixel
* function
*/
k = 0;
for(i = 0; i < height - tilesize; i+= tilesize) {
for(j = 0; j < width - tilesize; j += tilesize) {
vertices[k].texcoord[0] = 0.25f * (j/tilesize % 4);
vertices[k].texcoord[1] = 0.25f * (i/tilesize % 4);
vertices[k].point[0] = (float)j / xydiv - (float)(width / 2) / xydiv;
vertices[k].point[1] = (float)(i + tilesize) / xydiv - (float)(height / 2) / xydiv;
vertices[k].point[2] = (float)get_pixel(data, j, i + tilesize, width) / zdiv;
k++;
vertices[k].texcoord[0] = 0.25f * ((j/tilesize % 4) + 1.0f);
vertices[k].texcoord[1] = 0.25f * (i/tilesize % 4);
vertices[k].point[0] = (float)(j + tilesize) / xydiv - (float)(width / 2) / xydiv;
vertices[k].point[1] = (float)(i + tilesize) / xydiv - (float)(height / 2) / xydiv;
vertices[k].point[2] = (float)get_pixel(data, j + tilesize, i + tilesize, width) / zdiv;
k++;
vertices[k].texcoord[0] = 0.25f * ((j/tilesize % 4) + 1.0f);
vertices[k].texcoord[1] = 0.25f * ((i/tilesize % 4) + 1.0f);
vertices[k].point[0] = (float)(j + tilesize) / xydiv - (float)(width / 2) / xydiv;
vertices[k].point[1] = (float)i / xydiv - (float)(height / 2) / xydiv;
vertices[k].point[2] = (float)get_pixel(data, j + tilesize, i, width) / zdiv;
k++;
vertices[k].texcoord[0] = 0.25f * (j/tilesize % 4);
vertices[k].texcoord[1] = 0.25f * ((i/tilesize % 4) + 1.0f);
vertices[k].point[0] = (float)j / xydiv - (float)(width / 2) / xydiv;
vertices[k].point[1] = (float)i / xydiv - (float)(height / 2) / xydiv;
vertices[k].point[2] = (float)get_pixel(data, j, i, width) / zdiv;
k = 0;
o = create_object(OBJ_PLANE);
if(!o) {
free(data);
free_octree_branch(map_structure.octree);
return NULL;
}
o->render_separately = 0;
o->vertices = malloc(sizeof(struct vertex) * 4);
if(!o->vertices) {
fprintf(stderr, "Error: Couldn't allocate memory for heightmap vertices\n");
free(data);
free_octree_branch(map_structure.octree);
return NULL;
}
o->num_vertices = 4;
memcpy(o->vertices, vertices, sizeof(struct vertex) * 4);
p = (struct plane_object *)(o->aux);
setup_plane(p->plane, o->vertices[0].point, o->vertices[1].point, o->vertices[2].point);
p->minx = lowest(o->vertices[0].point[0], o->vertices[1].point[0],
o->vertices[2].point[0], o->vertices[3].point[0]);
p->maxx = highest(o->vertices[0].point[0], o->vertices[1].point[0],
o->vertices[2].point[0], o->vertices[3].point[0]);
p->miny = lowest(o->vertices[0].point[1], o->vertices[1].point[1],
o->vertices[2].point[1], o->vertices[3].point[1]);
p->maxy = highest(o->vertices[0].point[1], o->vertices[1].point[1],
o->vertices[2].point[1], o->vertices[3].point[1]);
p->minz = lowest(o->vertices[0].point[2], o->vertices[1].point[2],
o->vertices[2].point[2], o->vertices[3].point[2]);
p->maxz = highest(o->vertices[0].point[2], o->vertices[1].point[2],
o->vertices[2].point[2], o->vertices[3].point[2]);
on = get_octree_leaf_from_point(map_structure.octree, o->vertices[0].point);
add_object_to_octree_node(on, o);
}
}
free(data);
fprintf(stderr, "%s loaded\n", filename);
return &map_structure;
}
