// initialize the textures
void init_textures(Scene* scene, ShadeState* state) {
// YOUR CODE GOES HERE ---------------------
// grab textures from scene
auto texture_vector = get_textures(scene);
GLuint tex_id;
// foreach texture
for (auto tex_ : texture_vector)
{
// if already in the state->gl_texture_id map, skip
auto txt = state->gl_texture_id.find(tex_);
if (txt->first == tex_) continue;
// gen texture id
glGenTextures(1, &tex_id);
// set id to the state->gl_texture_id map for later use
// If the texture is not in the map, we have to add it: so we insert the
// tuple made by <image3f, id> of the current texture
state->gl_texture_id.insert(pair<image3f*, int>(tex_, tex_id));
// bind texture
glBindTexture(GL_TEXTURE_2D, tex_id);
// set texture filtering parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// load texture data
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex_->width(), tex_->height(), 0, GL_RGB, GL_FLOAT, tex_->data());
glGenerateMipmap(GL_TEXTURE_2D);
}
}
// initialize the textures
void init_textures(Scene* scene, ShadeState* state) {
// grab textures from scene
auto textures = get_textures(scene);
// foreach texture
for(auto texture : textures) {
// if already in the state->gl_texture_id map, skip
if(state->gl_texture_id.find(texture) != state->gl_texture_id.end()) continue;
// gen texture id
unsigned int id = 0;
glGenTextures(1, &id);
// set id to the state->gl_texture_id map for later use
state->gl_texture_id[texture] = id;
// bind texture
glBindTexture(GL_TEXTURE_2D, id);
// set texture filtering parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
// load texture data
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
texture->width(), texture->height(),
0, GL_RGB, GL_FLOAT, texture->data());
}
}
u64 load_pixel_frame(u64 texture, int x, int y, int x2, int y2){
texture_info texinfo;
if(!try_get_texture_info(texture, &texinfo)){
char namebuf[100];
get_textures(texture, namebuf, sizeof(namebuf));
stbi_info(namebuf, &texinfo.width, &texinfo.height, &texinfo.comp);
set_texture_info(texture, texinfo);
}
vec2 size = vec2_new(texinfo.width, texinfo.height);
texture_section sec =
{.uv_offset = vec2_div(vec2_new(x, y), size),
.uv_size = vec2_div(vec2_new(x2 - x, y2 - y), size),
.render_offset = vec2_new(0,0),
.pixel_size = vec2_new(x2 - x, y2 - y)};
//sec.uv_offset.y = 1.0 - sec.uv_offset.y;
add_texture_sections(texture, sec);
return 0;
}
u64 load_pixel_frame_center_of_mass(u64 texture, int x, int y, int x2, int y2, int cx, int cy){
texture_info texinfo;
if(!try_get_texture_info(texture, &texinfo)){
char namebuf[100];
get_textures(texture, namebuf, sizeof(namebuf));
stbi_info(namebuf, &texinfo.width, &texinfo.height, &texinfo.comp);
set_texture_info(texture, texinfo);
}
vec2 size = vec2_new(texinfo.width, texinfo.height);
int center_x = (x2 + x) / 2, center_y = (y2 + y) / 2;
texture_section sec =
{.uv_offset = vec2_div(vec2_new(x, y), size),
.uv_size = vec2_div(vec2_new(x2 - x, y2 - y), size),
.render_offset = vec2_new(center_x - cx, center_y - cy),
.pixel_size = vec2_new(x2 - x, y2 - y)};
add_texture_sections(texture, sec);
return 0;
}
CREATE_TABLE2(animation, u64, animation_state);
struct{
u32 count;
i32 * texture;
u64 * texid;
}loaded_textures;
i32 get_animation_gltexture(u64 tex){
u64 * id = memmem(loaded_textures.texid, loaded_textures.count * sizeof(u64), &tex, sizeof(u64));
if(id != NULL){
ASSERT(*id == tex);
return loaded_textures.texture[id - loaded_textures.texid];
}
char buffer[100];
get_textures(tex, buffer, sizeof(buffer));
i32 newtex = load_gl_texture(buffer);
list_push(loaded_textures.texture, loaded_textures.count, newtex);
list_push2(loaded_textures.texid, loaded_textures.count, tex);
return newtex;
}
