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310 | with
openGL.Context,
openGL.Surface,
openGL.Geometry,
openGL.Model,
openGL.Visual,
openGL.Impostor,
openGL.Texture,
openGL.Font,
openGL.Light;
limited
with
openGL.Camera;
private
with
ada.Containers.hashed_Maps,
ada.unchecked_Conversion;
package openGL.Renderer.lean
--
-- Provides a rendering engine for the 'lean' GL profile.
--
is
type Item is limited new Renderer.item with private;
type View is access all Item'Class;
---------
--- Forge
--
procedure define (Self : access Item);
procedure destroy (Self : in out Item);
procedure free (Self : in out View);
--------------
--- Attributes
--
function new_Light (Self : in out Item) return Light.item;
procedure set (Self : in out Item; the_Light : in Light.item);
procedure rid (Self : in out Item; the_Light : in Light.item);
function Light (Self : in out Item; Id : in light.Id_t) return openGL.Light.item;
function fetch (Self : in out Item) return openGL.Light.items;
type context_Setter is access procedure;
type Swapper is access procedure;
procedure Context_is (Self : in out Item; Now : in Context.view);
procedure Context_Setter_is (Self : in out Item; Now : in context_Setter);
procedure Swapper_is (Self : in out Item; Now : in Swapper);
--------------
-- Operations
--
type impostor_Update
is
record
Impostor : openGL.Impostor.view;
current_Width_pixels : gl.GLsizei;
current_Height_pixels : gl.GLsizei;
current_copy_x_Offset : gl.GLsizei;
current_copy_y_Offset : gl.GLsizei;
current_copy_X : gl.GLsizei;
current_copy_Y : gl.GLsizei;
current_copy_Width : gl.GLsizei;
current_copy_Height : gl.GLsizei;
current_Camera_look_at_Rotation : Matrix_3x3;
end record;
type impostor_Updates is array (Positive range <>) of impostor_Update;
procedure queue_Impostor_updates (Self : in out Item; the_Updates : in impostor_Updates;
the_Camera : access Camera.item'Class);
procedure queue_Visuals (Self : in out Item; the_Visuals : in Visual.views;
the_Camera : access Camera.item'Class);
procedure start_Engine (Self : in out Item);
procedure stop_Engine (Self : in out Item);
procedure render (Self : in out Item; to_Surface : in Surface.view := null);
procedure add_Font (Self : in out Item; font_Id : in Font.font_Id);
procedure Screenshot (Self : in out Item; Filename : in String;
with_Alpha : in Boolean := False);
function is_Busy (Self : in Item) return Boolean;
procedure draw (Self : in out Item; the_Visuals : in Visual.views;
camera_world_Transform : in Matrix_4x4;
view_Transform : in Matrix_4x4;
perspective_Transform : in Matrix_4x4;
clear_Frame : in Boolean;
to_Surface : in Surface.view := null);
--
-- Raises buffer_Overflow if the renderer is unable to cope with the new 'draw'.
procedure free (Self : in out Item; the_Model : in Model .view);
procedure free (Self : in out Item; the_Impostor : in Impostor.view);
buffer_Overflow : exception;
Texture_not_found : exception;
private
type Camera_view is access all openGL.Camera.item'Class;
max_Visuals : constant := 20_000;
----------
-- Updates
--
type updates_for_Camera is
record
impostor_Updates : lean.impostor_Updates (1 .. max_Visuals);
impostor_updates_Last : Natural := 0;
Visuals : Visual.views (1 .. max_Visuals);
visuals_Last : Natural := 0;
end record;
type Updates_for_Camera_view is access Updates_for_Camera;
function Hash is new ada.unchecked_Conversion (Camera_view, ada.Containers.Hash_type);
package camera_Maps_of_updates is new ada.Containers.Hashed_Maps (Camera_view,
updates_for_Camera_view,
Hash,
"=");
type camera_updates_Couple is
record
Camera : Camera_view;
Updates : Updates_for_Camera_view;
end record;
type camera_updates_Couples is array (Positive range <>) of camera_updates_Couple;
protected
type safe_camera_Map_of_updates
is
procedure define;
procedure destruct;
procedure add (the_Updates : in impostor_Updates;
the_Camera : in Camera_view);
procedure add (the_Visuals : in Visual.views;
the_Camera : in Camera_view);
procedure fetch_all_Updates (the_Updates : out camera_updates_Couples;
Length : out Natural);
private
Map_1 : aliased camera_Maps_of_updates.Map;
Map_2 : aliased camera_Maps_of_updates.Map;
current_Map : access camera_Maps_of_updates.Map;
end safe_camera_Map_of_updates;
-- visual_geometry_Couple
--
type visual_geometry_Couple is
record
Visual : openGL.Visual .view;
Geometry : openGL.Geometry.view;
end record;
type visual_geometry_Couples is array (math.Index range <>) of visual_geometry_Couple;
type visual_geometry_Couples_view is access all visual_geometry_Couples;
-- graphics_Models
--
type graphics_Models is array (1 .. max_Visuals) of Model.view;
protected
type safe_Models
is
procedure add (the_Model : in Model.view);
procedure fetch (the_Models : out graphics_Models;
Count : out Natural);
private
my_Models : graphics_Models;
my_Count : Natural := 0;
end safe_Models;
-- Impostors
--
type Impostor_Set is array (1 .. max_Visuals) of Impostor.view;
protected
type safe_Impostors
is
procedure add (the_Impostor : in Impostor.view);
procedure fetch (Impostors : out Impostor_Set;
Count : out Natural);
private
the_Impostors : Impostor_Set;
the_Count : Natural := 0;
end safe_Impostors;
----------
--- Lights
--
function Hash (Id : in openGL.light.Id_t) return ada.Containers.Hash_type;
use type openGL.Light.Id_t,
openGL.Light.item;
package id_Maps_of_light is new ada.Containers.hashed_Maps (Key_type => openGL.light.Id_t,
Element_type => openGL.Light.item,
Hash => Hash,
equivalent_Keys => "=");
subtype id_Map_of_light is id_Maps_of_light.Map;
protected
type safe_Lights
is
procedure add (Light : in openGL.Light.item);
procedure set (Light : in openGL.Light.item);
procedure rid (Light : in openGL.Light.item);
function get (Id : in openGL.light.Id_t) return openGL.Light.item;
function fetch return openGL.Light.items;
private
the_Lights : id_Map_of_light;
end safe_Lights;
-- Engine
--
task type Engine (Self : access Item'Class)
is
entry start (Context : in openGL.Context.view);
entry Stop;
entry render;
entry add_Font (font_Id : in Font.font_Id);
entry Screenshot (Filename : in String;
with_Alpha : in Boolean := False);
pragma Storage_Size (100_000_000);
end Engine;
-- Renderer
--
type Item is limited new Renderer.item with
record
Lights : safe_Lights;
prior_Light_Id : openGL.Light.Id_t := 0;
Textures : aliased Texture.name_Map_of_texture;
Fonts : Font.font_id_Map_of_font;
all_opaque_Couples : visual_geometry_Couples_view := new visual_geometry_Couples (1 .. max_Visuals);
all_lucid_Couples : visual_geometry_Couples_view := new visual_geometry_Couples (1 .. max_Visuals);
obsolete_Models : safe_Models;
obsolete_Impostors : safe_Impostors;
texture_Pool : aliased Texture.Pool;
safe_Camera_updates_Map
: aliased safe_camera_Map_of_updates;
Engine : lean.Engine (Self => Item'Access);
Context : openGL.Context.view;
context_Setter : lean.context_Setter;
Swapper : lean.Swapper;
swap_Required : Boolean;
is_Busy : Boolean := False;
end record;
procedure update_Impostors_and_draw_Visuals
(Self : in out Item; all_Updates : in camera_updates_Couples);
procedure update_Impostors (Self : in out Item; the_Updates : in impostor_Updates;
camera_world_Transform : in Matrix_4x4;
view_Transform : in Matrix_4x4;
perspective_Transform : in Matrix_4x4);
procedure free_old_Models (Self : in out Item);
procedure free_old_Impostors (Self : in out Item);
end openGL.Renderer.lean;
|