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opengl.light: Add 'Strength' to lights.

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This commit is contained in:
Rod Kay
2024-02-28 21:11:59 +11:00
parent 25373dabfe
commit 0b655ea2be
4 changed files with 39 additions and 21 deletions
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3
3-mid/opengl/assets/shader/lighting-frag.snippet
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@@ -4,6 +4,7 @@
struct light
{
vec4 Site;
float Strength;
vec3 Color;
float Attenuation;
float ambient_Coefficient;
@@ -67,7 +68,7 @@ apply_Light (light Light,
// Abmbient.
//
vec3 lit_surface_Color = surface_Color * Light.Color;
vec3 lit_surface_Color = surface_Color * Light.Color * Light.Strength;
vec3 Ambient = Light.ambient_Coefficient * lit_surface_Color;

16
3-mid/opengl/source/lean/light/opengl-light.adb
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@@ -58,6 +58,22 @@ is
end Site_is;
function Strength (Self : in Item) return Intensity
is
begin
return Self.Strength;
end Strength;
procedure Strength_is (Self : in out Item; Now : in Intensity)
is
begin
Self.Strength := Now;
end Strength_is;
function Color (Self : in Item) return openGL.Color
is
begin

5
3-mid/opengl/source/lean/light/opengl-light.ads
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@@ -16,6 +16,7 @@ is
--
type Id_t is new Natural;
type Kind_t is (Diffuse, Direct);
type Intensity is digits 5 range 0.0 .. 10.0;
null_Id : constant Id_t;
@@ -31,6 +32,9 @@ is
function Site (Self : in Item) return openGL.Site;
procedure Site_is (Self : in out Item; Now : in openGL.Site);
function Strength (Self : in Item) return Intensity;
procedure Strength_is (Self : in out Item; Now : in Intensity);
function Color (Self : in Item) return Color;
function Attenuation (Self : in Item) return Real;
function ambient_Coefficient (Self : in Item) return Real;
@@ -56,6 +60,7 @@ private
On : Boolean := True;
Site : openGL.Site := [0.0, 0.0, 1.0]; -- The GL default.
Strength : Intensity := 1.0;
Color : openGL.Color := Palette.White;
Attenuation : Real := 0.1;
ambient_Coefficient : Real := 0.1;

10
3-mid/opengl/source/lean/shader/opengl-program-lit.adb
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@@ -1,12 +1,6 @@
with
openGL.Conversions,
GL.lean,
GL.Binding,
GL.Pointers,
ada.Strings.fixed,
Interfaces.C.Strings;
with ada.text_io; use ada.text_io;
ada.Strings.fixed;
package body openGL.Program.lit
@@ -80,6 +74,7 @@ is
end light_Name;
site_Uniform : constant Variable.uniform.vec4 := Self.uniform_Variable (light_Name & ".Site");
strength_Uniform : constant Variable.uniform.float := Self.uniform_Variable (light_Name & ".Strength");
color_Uniform : constant Variable.uniform.vec3 := Self.uniform_Variable (light_Name & ".Color");
attenuation_Uniform : constant Variable.uniform.float := Self.uniform_Variable (light_Name & ".Attenuation");
ambient_coefficient_Uniform : constant Variable.uniform.float := Self.uniform_Variable (light_Name & ".ambient_Coefficient");
@@ -93,6 +88,7 @@ is
end case;
color_Uniform .Value_is (to_Vector_3 (Light.Color));
strength_Uniform .Value_is (Real (Light.Strength));
attenuation_Uniform .Value_is ( Light.Attenuation);
ambient_coefficient_Uniform.Value_is ( Light.ambient_Coefficient);
cone_angle_Uniform .Value_is (Real (Light.cone_Angle));