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236 | --------------------------------------------------------------------------------------------------------------------
-- This source code is subject to the Zlib license, see the LICENCE file in the root of this directory.
--------------------------------------------------------------------------------------------------------------------
with Ada.Real_Time;
with Ada.Unchecked_Conversion;
with Interfaces.C;
with Moose;
with SDL;
with SDL.Log;
with SDL.Video.Palettes;
with SDL.Video.Pixel_Formats;
with SDL.Video.Pixels;
with SDL.Video.Renderers.Makers;
with SDL.Video.Textures.Makers;
with SDL.Video.Windows.Makers;
with System;
procedure Stream is
use type SDL.Dimension;
use type SDL.Positive_Sizes;
W : SDL.Video.Windows.Window;
Renderer : SDL.Video.Renderers.Renderer;
Texture : SDL.Video.Textures.Texture;
Pixels : SDL.Video.Pixels.ARGB_8888_Access.Pointer;
procedure Lock is new SDL.Video.Textures.Lock (Pixel_Pointer_Type => SDL.Video.Pixels.ARGB_8888_Access.Pointer);
use type SDL.Video.Pixels.ARGB_8888_Access.Pointer;
-- This uses the same algorithm as the original teststream.c. It copies 1 pixel at a time, indexing into the moose
-- palette using the data from moose.dat.
procedure Update_Texture_1 (Pointer : in SDL.Video.Pixels.ARGB_8888_Access.Pointer) is
Start_Time : Ada.Real_Time.Time;
End_Time : Ada.Real_Time.Time;
Colour : SDL.Video.Palettes.RGB_Colour;
use type Ada.Real_Time.Time;
begin
Start_Time := Ada.Real_Time.Clock;
for Y in 1 .. Moose.Moose_Size.Height loop
declare
Dest : SDL.Video.Pixels.ARGB_8888_Access.Pointer :=
Pointer + Interfaces.C.ptrdiff_t ((Y - 1) * Moose.Moose_Size.Width);
begin
for X in 1 .. Moose.Moose_Size.Width loop
Colour := Moose.Moose_Palette (Moose.Moose_Frame_Data
(Moose.Moose_Frame, ((Y - 1) * Moose.Moose_Size.Width) + (X - 1)));
Dest.all := SDL.Video.Pixels.ARGB_8888'(Red => Colour.Red,
Green => Colour.Green,
Blue => Colour.Blue,
Alpha => SDL.Video.Palettes.Colour_Component'Last);
SDL.Video.Pixels.ARGB_8888_Access.Increment (Dest);
end loop;
end;
end loop;
End_Time := Ada.Real_Time.Clock;
SDL.Log.Put_Debug ("Update_Texture_1 took " &
Ada.Real_Time.To_Duration (End_Time - Start_Time)'Img & " seconds.");
end Update_Texture_1;
package Texture_2D is new SDL.Video.Pixels.Texture_Data
(Index => SDL.Dimension,
Element => SDL.Video.Pixels.ARGB_8888,
Element_Array_1D => SDL.Video.Pixels.ARGB_8888_Array,
Element_Array_2D => Moose.Texture_2D_Array,
Default_Terminator => SDL.Video.Pixels.ARGB_8888'(others => SDL.Video.Palettes.Colour_Component'First));
procedure Update_Texture_2 (Pointer : in Texture_2D.Pointer) is
pragma Unreferenced (Pointer); -- TODO: Fix me!
function To_Address is new Ada.Unchecked_Conversion (Source => SDL.Video.Pixels.ARGB_8888_Access.Pointer,
Target => System.Address);
Start_Time : Ada.Real_Time.Time;
End_Time : Ada.Real_Time.Time;
Colour : SDL.Video.Palettes.RGB_Colour;
Actual_Pixels : Moose.Texture_2D_Array (1 .. Moose.Moose_Size.Height, 1 .. Moose.Moose_Size.Width) with
Address => To_Address (Pixels);
use type Ada.Real_Time.Time;
begin
Start_Time := Ada.Real_Time.Clock;
for Y in 1 .. Moose.Moose_Size.Height loop
for X in 1 .. Moose.Moose_Size.Width loop
Colour := Moose.Moose_Palette
(Moose.Moose_Frame_Data (Moose.Moose_Frame, ((Y - 1) * Moose.Moose_Size.Width) + (X - 1)));
Actual_Pixels (Y, X) := SDL.Video.Pixels.ARGB_8888'(Red => Colour.Red,
Green => Colour.Green,
Blue => Colour.Blue,
Alpha => SDL.Video.Palettes.Colour_Component'Last);
end loop;
end loop;
End_Time := Ada.Real_Time.Clock;
SDL.Log.Put_Debug ("Update_Texture_2 took " &
Ada.Real_Time.To_Duration (End_Time - Start_Time)'Img & " seconds.");
end Update_Texture_2;
use type Moose.Moose_Frames;
begin
SDL.Log.Set (Category => SDL.Log.Application, Priority => SDL.Log.Debug);
Moose.Load_Moose_Data (Data => Moose.Moose_Frame_Data);
Moose.Cache_Moose (Moose.Cache, Moose.Moose_Frame_Data, Moose.Moose_Palette);
if SDL.Initialise = True then
SDL.Video.Windows.Makers.Create (Win => W,
Title => "Stream (Moose animation)",
Position => SDL.Natural_Coordinates'(X => 100, Y => 100),
Size => Moose.Moose_Size * 4,
Flags => SDL.Video.Windows.Resizable);
SDL.Video.Renderers.Makers.Create (Renderer, W);
SDL.Video.Textures.Makers.Create (Tex => Texture,
Renderer => Renderer,
Format => SDL.Video.Pixel_Formats.Pixel_Format_ARGB_8888,
Kind => SDL.Video.Textures.Streaming,
Size => Moose.Moose_Size);
-- W.Set_Mode (SDL.Video.Windows.Full_Screen);
-- First test.
for Index in 1 .. 10 loop
Lock (Texture, Pixels);
-- The block makes things a bit clearer.
begin
Update_Texture_1 (Pixels);
end;
Texture.Unlock;
Renderer.Clear;
Renderer.Copy (Texture);
Renderer.Present;
Moose.Moose_Frame := Moose.Moose_Frame + 1;
-- if Moose_Frame = Moose_Frame'Last then
-- Pixel := Data.Element_Array (0)'Access;
-- end if;
delay 0.05;
end loop;
Renderer.Clear;
Renderer.Present;
delay 0.7;
SDL.Log.Put_Debug ("");
-- Second test.
for Index in 1 .. 10 loop
Lock (Texture, Pixels);
-- The block makes things a bit clearer.
begin
Update_Texture_2 (Texture_2D.Pointer (Pixels));
end;
Texture.Unlock;
Renderer.Clear;
Renderer.Copy (Texture);
Renderer.Present;
Moose.Moose_Frame := Moose.Moose_Frame + 1;
-- if Moose_Frame = Moose_Frame'Last then
-- Pixel := Data.Element_Array (0)'Access;
-- end if;
delay 0.05;
end loop;
Renderer.Clear;
Renderer.Present;
delay 0.7;
SDL.Log.Put_Debug ("");
-- Third test.
for Index in 1 .. 100 loop
Lock (Texture, Pixels);
-- The block makes things a bit clearer.
Update_Texture_3 : declare
function To_Address is new Ada.Unchecked_Conversion (Source => SDL.Video.Pixels.ARGB_8888_Access.Pointer,
Target => System.Address);
Start_Time : Ada.Real_Time.Time;
End_Time : Ada.Real_Time.Time;
Actual_Pixels : Moose.Texture_2D_Array (1 .. Moose.Moose_Size.Height, 1 .. Moose.Moose_Size.Width) with
Address => To_Address (Pixels);
use type Ada.Real_Time.Time;
begin
Start_Time := Ada.Real_Time.Clock;
Actual_Pixels := Moose.Cache (Moose.Moose_Frame);
End_Time := Ada.Real_Time.Clock;
SDL.Log.Put_Debug ("Update_Texture_3 took " &
Ada.Real_Time.To_Duration (End_Time - Start_Time)'Img & " seconds.");
end Update_Texture_3;
Texture.Unlock;
Renderer.Clear;
Renderer.Copy (Texture);
Renderer.Present;
Moose.Moose_Frame := Moose.Moose_Frame + 1;
-- if Moose_Frame = Moose_Frame'Last then
-- Pixel := Data.Element_Array (0)'Access;
-- end if;
delay 0.05;
end loop;
W.Finalize;
SDL.Finalise;
end if;
end Stream;
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