Samples: LightShafts - port from Cg to OgreUnifiedShader

Samples/Media/materials/programs/GLSL/LightShafts.frag

@@ -0,0 +1,46 @@
+// ---------------------------------------------------------------------------------------
+// Light shafts shaders with shadows and noise support
+// Inpirated on the ATI paper https://developer.amd.com/wordpress/media/2012/10/Mitchell_LightShafts.pdf
+// Ogre3D implementation by Xavier Verguín González (xavyiy [at] gmail [dot] com) [Xavyiy]
+// ---------------------------------------------------------------------------------------
+
+#include <OgreUnifiedShader.h>
+
+// UNIFORM
+uniform vec4    uAttenuation;
+uniform vec3    uLightPosition;
+uniform SAMPLER2D(uDepthMap,  0);
+uniform SAMPLER2D(uCookieMap, 1);
+uniform SAMPLER2D(uNoiseMap,  2);
+uniform float Time;
+
+MAIN_PARAMETERS
+IN(vec3 vPosition, TEXCOORD0)
+IN(vec4 oUV      , TEXCOORD1)
+MAIN_DECLARATION
+{
+    vec4 iUV = oUV / oUV.w;
+
+    float Depth  = texture2D(uDepthMap,  iUV.xy).r;
+
+#if !defined(OGRE_HLSL) && !defined(OGRE_REVERSED_Z)
+    iUV.z = iUV.z * 0.5 + 0.5;
+#endif
+
+    if (Depth < iUV.z)
+    {
+        gl_FragColor = vec4(0,0,0,1);
+    }
+    else
+    {
+        vec4 Cookie = texture2D(uCookieMap, iUV.xy);
+        vec2 Noise  = vec2(texture2D(uNoiseMap,  iUV.xy - Time).r,
+                           texture2D(uNoiseMap,  iUV.xy + Time).g);
+
+        float noise  = Noise.x * Noise.y;
+        float length_ = length(uLightPosition - vPosition);
+        float atten  = 1.0 / (uAttenuation.y + uAttenuation.z*length_ + 20.0*uAttenuation.w*length_*length_);
+
+        gl_FragColor = vec4(Cookie.rgb * atten * noise , 1);
+    }
+}

Samples/Media/materials/programs/GLSL/LightShafts.vert

@@ -0,0 +1,23 @@
+// ---------------------------------------------------------------------------------------
+// Light shafts shaders with shadows and noise support
+// Inpirated on the ATI paper https://developer.amd.com/wordpress/media/2012/10/Mitchell_LightShafts.pdf
+// Ogre3D implementation by Xavier Verguín González (xavyiy [at] gmail [dot] com) [Xavyiy]
+// ---------------------------------------------------------------------------------------
+
+#include <OgreUnifiedShader.h>
+
+// UNIFORM
+uniform mat4 uWorldView;
+uniform mat4 uWorldViewProj;
+uniform mat4 uTexWorldViewProj;
+
+MAIN_PARAMETERS
+IN(vec4 vertex , POSITION)
+OUT(vec3 vPosition, TEXCOORD0)
+OUT(vec4 oUV      , TEXCOORD1)
+MAIN_DECLARATION
+{
+    gl_Position = mul(uWorldViewProj, vertex);
+    vPosition   = mul(uWorldView, vertex).xyz;
+    oUV         = mul(uTexWorldViewProj, vertex);
+}

Samples/Media/materials/scripts/LigthShafts.material

@@ -6,12 +6,38 @@
 
 // --------------------- Light shafts material ------------------------
 
-vertex_program LightShafts_VP cg
+vertex_program LightShafts_VP_GLSL glsl
 {
-    source LightShafts.hlsl
-    entry_point main_vp
-    profiles vs_2_0 arbvp1
+    source LightShafts.vert
+}
+
+vertex_program LightShafts_VP_HLSL hlsl
+{
+    source LightShafts.vert
+    target vs_2_0
+}
+
+fragment_program LightShafts_FP_GLSL glsl
+{
+    source LightShafts.frag
+    default_params
+    {
+        param_named uDepthMap int 0
+        param_named uCookieMap int 1
+        param_named uNoiseMap int 2
+    }
+}
 
+fragment_program LightShafts_FP_HLSL hlsl
+{
+    source LightShafts.frag
+    target ps_2_0
+}
+
+vertex_program LightShafts_VP unified
+{
+    delegate LightShafts_VP_GLSL
+    delegate LightShafts_VP_HLSL
     default_params
     {
         param_named_auto uWorldView worldview_matrix
@@ -20,11 +46,10 @@ vertex_program LightShafts_VP cg
     }
 }
 
-fragment_program LightShafts_FP cg
+fragment_program LightShafts_FP unified
 {
-    source LightShafts.hlsl
-    entry_point main_fp
-    profiles ps_2_0 arbfp1
+    delegate LightShafts_FP_GLSL
+    delegate LightShafts_FP_HLSL
 }
 
 material LightShafts
@@ -73,26 +98,4 @@ material LightShafts
             }
         }
     }
-}
-
-// --------------------- Depth material ------------------------
-
-vertex_program LightShaftsDepth_VP cg
-{
-    source LightShafts.hlsl
-    entry_point main_vp_depth
-    profiles vs_2_0 arbvp1
-
-    default_params
-    {
-        param_named_auto uWorldView worldview_matrix
-        param_named_auto uWorldViewProj worldviewproj_matrix
-    }
-}
-
-fragment_program LightShaftsDepth_FP cg
-{
-    source LightShafts.hlsl
-    entry_point main_fp_depth
-    profiles ps_2_0 arbfp1
 }

Samples/Simple/include/LightShafts.h

@@ -41,8 +41,6 @@ class _OgreSampleClassExport Sample_LightShafts : public SdkSample
                         "N - Change light cookie";
     }
 
-    StringVector getRequiredPlugins() { return {"Cg Program Manager"}; }
-
     bool frameStarted(const FrameEvent& e)
     {
         // Update light position