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511 | -- SPDX-License-Identifier: Apache-2.0
--
-- Copyright (c) 2016 onox <denkpadje@gmail.com>
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
with Ada.Command_Line;
with Ada.Directories;
with Ada.Exceptions;
with Ada.Real_Time;
with GL.Low_Level.Enums;
with GL.Objects.Samplers;
with GL.Objects.Textures;
with GL.Pixels;
with GL.Types;
with Orka.Behaviors;
with Orka.Contexts.AWT;
with Orka.Cameras.Rotate_Around_Cameras;
with Orka.Culling;
with Orka.Debug;
with Orka.Frame_Graphs;
with Orka.Futures;
with Orka.Jobs;
with Orka.Loggers.Terminal;
with Orka.Logging.Default;
with Orka.Loops;
with Orka.OS;
with Orka.Rendering.Drawing;
with Orka.Rendering.Framebuffers;
with Orka.Rendering.Programs.Modules;
with Orka.Rendering.Programs.Uniforms;
with Orka.Rendering.States;
with Orka.Rendering.Textures;
with Orka.Resources.Loaders;
with Orka.Resources.Locations.Directories;
with Orka.Resources.Managers;
with Orka.Resources.Models.glTF;
with Orka.Types;
with Orka.Windows;
with AWT.Inputs;
with AWT.Monitors;
with Orka_Package_glTF;
procedure Orka_GLTF is
Width : constant := 1280;
Height : constant := 720;
Samples : constant := 2;
Light_Position : constant Orka.Types.Singles.Vector4 := (0.0, 0.0, 0.0, 1.0);
use all type Orka.Logging.Default_Module;
use all type Orka.Logging.Severity;
procedure Log is new Orka.Logging.Default.Generic_Log (Application);
type Add_Behavior_Access is access procedure (Object : Orka.Behaviors.Behavior_Ptr);
Add_Behavior : Add_Behavior_Access := null;
Scene : Orka.Behaviors.Behavior_Array_Access;
----------------------------------------------------------------------
procedure Load_Texture (Texture : in out GL.Objects.Textures.Texture) is
Pixels : aliased constant Orka.Float_32_Array
-- White
:= (0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 0.5, 0.5, 0.5, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 0.5, 0.5, 0.5,
0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 0.5, 0.5, 0.5, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 0.5, 0.5, 0.5,
-- Red
0.5, 0.5, 0.5, 1.0, 0.0, 0.0, 0.5, 0.5, 0.5, 1.0, 0.0, 0.0,
1.0, 0.0, 0.0, 0.5, 0.5, 0.5, 1.0, 0.0, 0.0, 0.5, 0.5, 0.5,
0.5, 0.5, 0.5, 1.0, 0.0, 0.0, 0.5, 0.5, 0.5, 1.0, 0.0, 0.0,
1.0, 0.0, 0.0, 0.5, 0.5, 0.5, 1.0, 0.0, 0.0, 0.5, 0.5, 0.5,
-- Green
0.5, 0.5, 0.5, 0.0, 1.0, 0.0, 0.5, 0.5, 0.5, 0.0, 1.0, 0.0,
0.0, 1.0, 0.0, 0.5, 0.5, 0.5, 0.0, 1.0, 0.0, 0.5, 0.5, 0.5,
0.5, 0.5, 0.5, 0.0, 1.0, 0.0, 0.5, 0.5, 0.5, 0.0, 1.0, 0.0,
0.0, 1.0, 0.0, 0.5, 0.5, 0.5, 0.0, 1.0, 0.0, 0.5, 0.5, 0.5,
-- Blue
0.5, 0.5, 0.5, 0.0, 0.0, 1.0, 0.5, 0.5, 0.5, 0.0, 0.0, 1.0,
0.0, 0.0, 1.0, 0.5, 0.5, 0.5, 0.0, 0.0, 1.0, 0.5, 0.5, 0.5,
0.5, 0.5, 0.5, 0.0, 0.0, 1.0, 0.5, 0.5, 0.5, 0.0, 0.0, 1.0,
0.0, 0.0, 1.0, 0.5, 0.5, 0.5, 0.0, 0.0, 1.0, 0.5, 0.5, 0.5,
-- Cyan
0.5, 0.5, 0.5, 0.0, 1.0, 1.0, 0.5, 0.5, 0.5, 0.0, 1.0, 1.0,
0.0, 1.0, 1.0, 0.5, 0.5, 0.5, 0.0, 1.0, 1.0, 0.5, 0.5, 0.5,
0.5, 0.5, 0.5, 0.0, 1.0, 1.0, 0.5, 0.5, 0.5, 0.0, 1.0, 1.0,
0.0, 1.0, 1.0, 0.5, 0.5, 0.5, 0.0, 1.0, 1.0, 0.5, 0.5, 0.5,
-- Yellow
0.5, 0.5, 0.5, 1.0, 1.0, 0.0, 0.5, 0.5, 0.5, 1.0, 1.0, 0.0,
1.0, 1.0, 0.0, 0.5, 0.5, 0.5, 1.0, 1.0, 0.0, 0.5, 0.5, 0.5,
0.5, 0.5, 0.5, 1.0, 1.0, 0.0, 0.5, 0.5, 0.5, 1.0, 1.0, 0.0,
1.0, 1.0, 0.0, 0.5, 0.5, 0.5, 1.0, 1.0, 0.0, 0.5, 0.5, 0.5,
-- Magenta
0.5, 0.5, 0.5, 1.0, 0.0, 1.0, 0.5, 0.5, 0.5, 1.0, 0.0, 1.0,
1.0, 0.0, 1.0, 0.5, 0.5, 0.5, 1.0, 0.0, 1.0, 0.5, 0.5, 0.5,
0.5, 0.5, 0.5, 1.0, 0.0, 1.0, 0.5, 0.5, 0.5, 1.0, 0.0, 1.0,
1.0, 0.0, 1.0, 0.5, 0.5, 0.5, 1.0, 0.0, 1.0, 0.5, 0.5, 0.5);
begin
Texture.Allocate_Storage (1, 1, GL.Pixels.RGBA8, 4, 4, 7);
Texture.Load_From_Data (0, 0, 0, 0, 4, 4, 7,
GL.Pixels.RGB, GL.Pixels.Float, Pixels'Address);
end Load_Texture;
package Job_System renames Orka_Package_glTF.Job_System;
package Loader renames Orka_Package_glTF.Loader;
use Ada.Exceptions;
begin
if Ada.Command_Line.Argument_Count /= 1 then
Orka.OS.Put_Line ("Usage: <path to .gltf file");
Job_System.Shutdown;
Loader.Shutdown;
return;
end if;
Orka.Logging.Set_Logger (Orka.Loggers.Terminal.Create_Logger (Level => Orka.Loggers.Debug));
AWT.Initialize;
for Monitor of AWT.Monitors.Monitors loop
Monitor.Log_Information;
end loop;
declare
Context : constant Orka.Contexts.Context'Class := Orka.Contexts.AWT.Create_Context
(Version => (4, 2), Flags => (Debug => True, others => False));
Window : constant Orka.Windows.Window'Class
:= Orka.Contexts.AWT.Create_Window (Context, Width, Height);
begin
Orka.Debug.Set_Log_Messages (Enable => True, Raise_API_Error => True);
declare
Full_Path : constant String := Ada.Command_Line.Argument (1);
Location_Path : constant String := Ada.Directories.Containing_Directory (Full_Path);
Model_Path : constant String := Ada.Directories.Simple_Name (Full_Path);
use Orka.Resources;
Location_Shaders : constant Locations.Location_Ptr
:= Locations.Directories.Create_Location ("data/shaders");
package LE renames GL.Low_Level.Enums;
use Orka.Rendering.Programs;
use Orka.Rendering.Framebuffers;
P_1 : constant Program := Create_Program (Modules.Create_Module
(Location_Shaders,
VS => "tools/gltf.vert",
FS => "tools/gltf.frag"));
P_2 : constant Program := Create_Program (Modules.Create_Module
(Location_Shaders,
VS => "oversized-triangle.vert",
FS => "tools/resolve.frag"));
Uni_View : constant Uniforms.Uniform := P_1.Uniform ("view");
Uni_Proj : constant Uniforms.Uniform := P_1.Uniform ("proj");
Uni_Light : constant Uniforms.Uniform := P_1.Uniform ("lightPosition");
----------------------------------------------------------------------
Uni_Texture : constant Uniforms.Uniform_Sampler := P_1.Uniform_Sampler ("diffuseTexture");
Uni_Resolution : constant Uniforms.Uniform := P_2.Uniform ("screenResolution");
Uni_Exposure : constant Uniforms.Uniform := P_2.Uniform ("exposure");
use GL.Objects.Textures;
use GL.Objects.Samplers;
Texture_1 : Texture (LE.Texture_2D_Array);
Sampler_1 : Sampler;
----------------------------------------------------------------------
FB_D : constant Framebuffer := Create_Default_Framebuffer (Window.Width, Window.Height);
Lens : constant Orka.Cameras.Camera_Lens :=
Orka.Cameras.Create_Lens
(Width, Height, Orka.Cameras.Transforms.FOV (36.0, 50.0));
Current_Camera : aliased Orka.Cameras.Rotate_Around_Cameras.Rotate_Around_Camera :=
Orka.Cameras.Rotate_Around_Cameras.Create_Camera (Lens);
use Orka.Culling;
Culler_1 : aliased Culler := Create_Culler (Location_Shaders);
----------------------------------------------------------------------
Group : aliased Orka.Resources.Models.Group_Access := null;
use type Orka.Resources.Models.Group_Access;
Group_Added : Boolean := False;
procedure Run_P1 (P : in out Program) is
Camera : constant Orka.Cameras.Camera_Ptr := Current_Camera'Unchecked_Access;
begin
Uni_View.Set_Matrix (Camera.View_Matrix);
declare
use Orka.Cameras.Transforms;
begin
-- TODO Don't re-compute projection matrix every frame
Culler_1.Bind (Camera.Projection_Matrix * Camera.View_Matrix);
end;
if Group /= null then
if not Group_Added then
Group_Added := True;
declare
Instance_1 : Orka.Resources.Models.Model_Instance_Ptr :=
new Orka_Package_glTF.No_Behavior'(Orka.Resources.Models.Model_Instance
with Position => (0.0, 0.0, 0.0, 1.0));
begin
Group.Add_Instance (Instance_1);
Add_Behavior (Orka.Behaviors.Behavior_Ptr (Instance_1));
-- For Rotate_Around_Camera and Look_At_Camera
if Camera.all in Orka.Cameras.Observing_Camera'Class then
Orka.Cameras.Observing_Camera'Class (Camera.all).Look_At
(Orka.Behaviors.Behavior_Ptr (Instance_1));
end if;
end;
end if;
Group.Cull;
P.Use_Program;
-- Render objects in scene here
for Behavior of Scene.all loop
Behavior.Render;
end loop;
Group.Render;
end if;
end Run_P1;
procedure Run_P2 (P : in out Program) is
begin
Uni_Resolution.Set_Vector (Orka.Types.Singles.Vector4'
(Orka.Float_32 (FB_D.Width), Orka.Float_32 (FB_D.Height), 0.0, 0.0));
Uni_Exposure.Set_Single (1.0);
Orka.Rendering.Drawing.Draw (GL.Types.Triangles, 0, 3);
end Run_P2;
use Orka.Frame_Graphs;
Graph_Builder : Orka.Frame_Graphs.Frame_Graph
(Maximum_Passes => 3,
Maximum_Handles => 10,
Maximum_Resources => 10);
Default_State : constant Orka.Rendering.States.State := (others => <>);
Fullscreen_State : constant Orka.Rendering.States.State :=
(Depth_Func => GL.Types.Always, others => <>);
Pass_1 : Render_Pass'Class :=
Graph_Builder.Add_Pass ("P1", Default_State, P_1, Run_P1'Unrestricted_Access);
Pass_2 : Render_Pass'Class :=
Graph_Builder.Add_Pass ("P2", Fullscreen_State, P_2, Run_P2'Unrestricted_Access);
Resource_1 : constant Orka.Frame_Graphs.Resource :=
(Name => +"R1",
Kind => LE.Texture_2D_Multisample,
Format => GL.Pixels.R11F_G11F_B10F,
Size => (1280, 720, 1),
Samples => Samples,
others => <>);
Resource_2 : constant Orka.Frame_Graphs.Resource :=
(Name => +"R2",
Kind => LE.Texture_2D_Multisample,
Format => GL.Pixels.Depth_Component32F,
Size => (1280, 720, 1),
Samples => Samples,
others => <>);
Resource_3 : constant Orka.Frame_Graphs.Resource :=
(Name => +"R3",
Kind => LE.Texture_2D,
Format => GL.Pixels.R11F_G11F_B10F,
Size => (FB_D.Width, FB_D.Height, 1),
Samples => 0,
others => <>);
----------------------------------------------------------------------
task Resource_Test;
Manager : constant Managers.Manager_Ptr := Managers.Create_Manager;
task body Resource_Test is
use Ada.Real_Time;
Loader_glTF : constant Loaders.Loader_Ptr := Models.glTF.Create_Loader (Manager);
Location_Models : constant Locations.Location_Ptr
:= Locations.Directories.Create_Location (Location_Path);
begin
Loader.Add_Location (Location_Models, Loader_glTF);
declare
T1 : constant Time := Clock;
Future_Ref : Orka.Futures.Pointers.Reference := Loader.Load (Model_Path).Get;
use type Orka.Futures.Status;
Resource_Status : Orka.Futures.Status;
Resource_Future : constant Orka.Futures.Future_Access := Future_Ref.Value;
begin
select
Resource_Future.Wait_Until_Done (Resource_Status);
pragma Assert (Resource_Status = Orka.Futures.Done);
pragma Assert (Manager.Contains (Model_Path));
declare
Model_1 : constant Models.Model_Ptr
:= Models.Model_Ptr (Manager.Resource (Model_Path));
Handle : Orka.Futures.Pointers.Mutable_Pointer;
Create_Instance_Job : constant Orka.Jobs.Job_Ptr
:= new Orka_Package_glTF.Create_Group_Job'
(Orka.Jobs.Abstract_Job with
Model => Model_1,
Culler => Culler_1'Unchecked_Access,
Group => Group'Unchecked_Access);
begin
Job_System.Queue.Enqueue (Create_Instance_Job, Handle);
end;
or
delay until T1 + Milliseconds (4000);
Log (Failure, "Not completed loading: " & Future_Ref.Current_Status'Image);
end select;
end;
exception
when Error : others =>
Log (Orka.Loggers.Error, "Error loading resource: " & Exception_Information (Error));
end Resource_Test;
begin
Pass_1.Add_Output (Resource_1, Framebuffer_Attachment, 0);
Pass_1.Add_Output (Resource_2, Framebuffer_Attachment, 1);
Pass_2.Add_Input (Resource_1, Texture_Read, 0);
Pass_2.Add_Output (Resource_3, Framebuffer_Attachment, 0);
Sampler_1.Set_X_Wrapping (Clamp_To_Edge);
Sampler_1.Set_Y_Wrapping (Clamp_To_Edge);
Sampler_1.Set_Minifying_Filter (Nearest);
Sampler_1.Set_Magnifying_Filter (Nearest);
Sampler_1.Bind (0);
-- Load checkerboard texture array
Load_Texture (Texture_1);
Uni_Texture.Verify_Compatibility (Texture_1);
Orka.Rendering.Textures.Bind (Texture_1, Orka.Rendering.Textures.Texture, 0);
Uni_Proj.Set_Matrix (Current_Camera.Projection_Matrix);
Uni_Light.Set_Vector (Light_Position);
Window.Set_Title ("glTF viewer - " & Model_Path);
declare
package Loops is new Orka.Loops
(Time_Step => Ada.Real_Time.Microseconds (2_083),
Frame_Limit => Ada.Real_Time.Microseconds (16_667),
Camera => Current_Camera'Unchecked_Access,
Job_Manager => Job_System);
procedure Add_Behavior_Callback (Object : Orka.Behaviors.Behavior_Ptr);
-- Resource_2 is depth buffer
-- Resource_3 is color buffer
Graph : Orka.Frame_Graphs.Renderable_Graph'Class := Graph_Builder.Cull (Resource_2);
procedure Render_Scene
(Scene_X : not null Orka.Behaviors.Behavior_Array_Access;
Camera : Orka.Cameras.Camera_Ptr) is
begin
Add_Behavior := Add_Behavior_Callback'Unrestricted_Access;
Scene := Scene_X;
Graph.Render (Context);
if Group /= null then
Group.After_Render;
for Behavior of Scene.all loop
Behavior.After_Render;
end loop;
end if;
Window.Swap_Buffers;
if Window.Should_Close then
Loops.Stop_Loop;
end if;
end Render_Scene;
procedure Add_Behavior_Callback (Object : Orka.Behaviors.Behavior_Ptr) is
begin
Loops.Scene.Add (Object);
end Add_Behavior_Callback;
begin
Graph.Initialize (Location_Shaders, FB_D);
Graph.Log_Graph;
Loops.Scene.Add (Orka.Behaviors.Null_Behavior);
declare
task Render_Task is new Orka.Contexts.Task_With_Surface_Context with
entry Move_Context
(Context : not null Orka.Contexts.Surface_Context_Access;
Window : in out Orka.Windows.Window'Class);
end Render_Task;
task body Render_Task is
Context : Orka.Contexts.Surface_Context_Access;
begin
accept Move_Context
(Context : not null Orka.Contexts.Surface_Context_Access;
Window : in out Orka.Windows.Window'Class)
do
Context.Make_Current (Window);
Render_Task.Context := Context;
end Move_Context;
Loops.Run_Loop (Render_Scene'Access);
Context.Make_Not_Current;
exception
when Error : others =>
Log (Orka.Loggers.Error, "Error: " & Exception_Information (Error));
Context.Make_Not_Current;
raise;
end Render_Task;
begin
Context.Move_To (Render_Task, Window);
while not Window.Should_Close loop
AWT.Process_Events (0.016667);
declare
Pointer : constant AWT.Inputs.Pointer_State := Window.State;
Keyboard : constant AWT.Inputs.Keyboard_State := Window.State;
use all type AWT.Inputs.Button_State;
use all type AWT.Inputs.Keyboard_Button;
use all type AWT.Inputs.Pointer_Button;
use all type AWT.Inputs.Pointer_Mode;
use all type AWT.Inputs.Dimension;
Rotate_Camera : constant Boolean :=
Pointer.Focused and Pointer.Buttons (Right) = Pressed;
begin
if Keyboard.Pressed (Key_Escape) then
Window.Close;
end if;
declare
New_Mode : constant AWT.Inputs.Pointer_Mode :=
(if Rotate_Camera then Locked else Visible);
begin
if Pointer.Mode /= New_Mode then
Window.Set_Pointer_Mode (New_Mode);
end if;
end;
-- FIXME Update with PO?
Current_Camera.Change_Orientation
(((if Rotate_Camera then Orka.Float_64 (Pointer.Relative (X)) else 0.0),
(if Rotate_Camera then Orka.Float_64 (Pointer.Relative (Y)) else 0.0),
Orka.Float_64 (Pointer.Scroll (Y)),
0.0));
end;
end loop;
end;
end;
end;
end;
Job_System.Shutdown;
Loader.Shutdown;
exception
when Error : others =>
Orka.OS.Put_Line ("Error: " & Exception_Information (Error));
Job_System.Shutdown;
Loader.Shutdown;
end Orka_GLTF;
|