void render_game(struct GameMemory *memory, struct Renderer *renderer, uint32 screen_width, uint32 screen_height)
{
struct GameState *game_state = (struct GameState *)memory->game_memory;
struct RenderBuffer *render_buffer = (struct RenderBuffer *)memory->render_memory;
float aspect_ratio = (float)screen_width / (float)screen_height;
mat4 projection_matrix = mat4_orthographic(-game_state->camera.zoom/2.0f, game_state->camera.zoom/2.0f,
-game_state->camera.zoom/2.0f / aspect_ratio, game_state->camera.zoom/2.0f / aspect_ratio,
0.0f, 1.0f);
mat4 view_matrix = mat4_look_at(vec3_new(game_state->camera.position.x, game_state->camera.position.y, 0.0f), vec3_new(game_state->camera.position.x, game_state->camera.position.y, -1.0f), vec3_new(0, 1, 0));
mat4 view_projection_matrix = mat4_mul(projection_matrix, view_matrix);
update_ubo(renderer->camera_ubo, sizeof(mat4), &view_projection_matrix);
bind_program(renderer->line_program);
draw_world_line_buffer(renderer, render_buffer, renderer->line_program);
bind_program(0);
bind_program(renderer->quad_program);
draw_world_quad_buffer(&renderer->sprite_batch, render_buffer);
bind_program(0);
draw_buildings(game_state, renderer);
draw_ships(game_state, renderer);
draw_projectiles(game_state, renderer);
view_projection_matrix = mat4_orthographic(0, screen_width, screen_height, 0, 0, 1);
update_ubo(renderer->camera_ubo, sizeof(mat4), &view_projection_matrix);
bind_program(renderer->quad_program);
draw_screen_quad_buffer(&renderer->sprite_batch, render_buffer);
bind_program(0);
draw_frame_text_buffer(renderer, render_buffer);
}
void ui_rectangle_render(ui_rectangle* r) {
if(!r->active) {
return;
}
int width = graphics_viewport_width();
int height = graphics_viewport_height();
asset_hndl mat = asset_hndl_new_load(P("$CORANGE/shaders/ui.mat"));
shader_program* program_ui = material_get_entry(asset_hndl_ptr(&mat), 0)->program;
shader_program_enable(program_ui);
shader_program_set_mat4(program_ui, "world", mat4_id());
shader_program_set_mat4(program_ui, "view", mat4_id());
shader_program_set_mat4(program_ui, "proj", mat4_orthographic(0, width, height, 0, -1, 1));
glEnable(GL_BLEND);
glBlendFunc(r->blend_src, r->blend_dst);
if (asset_hndl_isnull(&r->texture)) {
shader_program_set_texture(program_ui, "diffuse", 0, asset_hndl_new_load(P("$CORANGE/textures/white.dds")));
} else {
shader_program_set_texture(program_ui, "diffuse", 0, r->texture);
}
shader_program_set_texture(program_ui, "random", 1, asset_hndl_new_load(P("$CORANGE/textures/random.dds")));
shader_program_set_float(program_ui, "time", r->time);
shader_program_set_float(program_ui, "glitch", r->glitch);
float rect_colors[] = {
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w,
r->color.x, r->color.y, r->color.z, r->color.w
};
float rect_positions[] = {
r->top_left.x, r->top_left.y,
r->top_left.x, r->bottom_right.y,
r->bottom_right.x, r->bottom_right.y,
r->top_left.x, r->top_left.y,
r->bottom_right.x, r->top_left.y,
r->bottom_right.x, r->bottom_right.y,
};
float rect_texcoords[12];
if (r->texture_tile) {
float width = r->bottom_right.x - r->top_left.x;
float height = r->bottom_right.y - r->top_left.y;
rect_texcoords[0] = 0;
rect_texcoords[1] = height / r->texture_height;
rect_texcoords[2] = width / r->texture_width;
rect_texcoords[3] = height / r->texture_height;
rect_texcoords[4] = width / r->texture_width;
rect_texcoords[5] = 0;
rect_texcoords[6] = 0;
rect_texcoords[7] = height / r->texture_height;
rect_texcoords[8] = 0;
rect_texcoords[9] = 0;
rect_texcoords[10] = width / r->texture_width;
rect_texcoords[11] = 0;
} else {
rect_texcoords[0] = 0;
rect_texcoords[1] = 0;
rect_texcoords[2] = 1;
rect_texcoords[3] = 0;
rect_texcoords[4] = 1;
rect_texcoords[5] = 1;
rect_texcoords[6] = 0;
rect_texcoords[7] = 0;
rect_texcoords[8] = 0;
rect_texcoords[9] = 1;
rect_texcoords[10] = 1;
rect_texcoords[11] = 1;
}
shader_program_enable_attribute(program_ui, "vPosition", 2, 2, rect_positions);
shader_program_enable_attribute(program_ui, "vTexcoord", 2, 2, rect_texcoords);
shader_program_enable_attribute(program_ui, "vColor", 4, 4, rect_colors);
glDrawArrays(GL_TRIANGLES, 0, 6);
shader_program_disable_attribute(program_ui, "vPosition");
shader_program_disable_attribute(program_ui, "vTexcoord");
shader_program_disable_attribute(program_ui, "vColor");
if (r->border_size > 0) {
glLineWidth(r->border_size);
float border_colors[] = {
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w,
r->border_color.x, r->border_color.y, r->border_color.z, r->border_color.w
};
float border_positions[] = {
r->top_left.x, r->top_left.y,
r->bottom_right.x, r->top_left.y,
r->bottom_right.x, r->bottom_right.y,
r->top_left.x, r->bottom_right.y,
r->top_left.x, r->top_left.y
};
float border_texcoord[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
shader_program_enable_attribute(program_ui, "vPosition", 2, 2, border_positions);
shader_program_enable_attribute(program_ui, "vTexcoord", 2, 2, border_texcoord);
shader_program_enable_attribute(program_ui, "vColor", 4, 4, border_colors);
glDrawArrays(GL_LINE_STRIP, 0, 5);
shader_program_disable_attribute(program_ui, "vPosition");
shader_program_disable_attribute(program_ui, "vTexcoord");
shader_program_disable_attribute(program_ui, "vColor");
glLineWidth(1);
}
glDisable(GL_BLEND);
shader_program_disable(program_ui);
}