CUDA 13.2 samples update (#432)

- Added Python samples for CUDA Python 1.0 release
- Renamed top-level `Samples` directory to `cpp` to accommodate Python samples.

cpp/4_CUDA_Libraries/oceanFFT/data/ocean.frag

@@ -0,0 +1,30 @@
+// GLSL fragment shader
+varying vec3 eyeSpacePos;
+varying vec3 worldSpaceNormal;
+varying vec3 eyeSpaceNormal;
+
+uniform vec4 deepColor;
+uniform vec4 shallowColor;
+uniform vec4 skyColor;
+uniform vec3 lightDir;
+
+void main()
+{
+    vec3 eyeVector              = normalize(eyeSpacePos);
+    vec3 eyeSpaceNormalVector   = normalize(eyeSpaceNormal);
+    vec3 worldSpaceNormalVector = normalize(worldSpaceNormal);
+
+    float facing    = max(0.0, dot(eyeSpaceNormalVector, -eyeVector));
+    float fresnel   = pow(1.0 - facing, 5.0); // Fresnel approximation
+    float diffuse   = max(0.0, dot(worldSpaceNormalVector, lightDir));
+    
+//    vec4 waterColor = mix(shallowColor, deepColor, facing);
+    vec4 waterColor = deepColor;
+    
+//    gl_FragColor = gl_Color;
+//    gl_FragColor = vec4(fresnel);
+//    gl_FragColor = vec4(diffuse);
+//    gl_FragColor = waterColor;
+//    gl_FragColor = waterColor*diffuse;
+    gl_FragColor = waterColor*diffuse + skyColor*fresnel;
+}

cpp/4_CUDA_Libraries/oceanFFT/data/ocean.vert

@@ -0,0 +1,24 @@
+// GLSL vertex shader
+varying vec3 eyeSpacePos;
+varying vec3 worldSpaceNormal;
+varying vec3 eyeSpaceNormal;
+uniform float heightScale; // = 0.5;
+uniform float chopiness;   // = 1.0;
+uniform vec2  size;        // = vec2(256.0, 256.0);
+
+void main()
+{
+    float height     = gl_MultiTexCoord0.x;
+    vec2  slope      = gl_MultiTexCoord1.xy;
+
+    // calculate surface normal from slope for shading
+	vec3 normal      = normalize(cross( vec3(0.0, slope.y*heightScale, 2.0 / size.x), vec3(2.0 / size.y, slope.x*heightScale, 0.0)));
+    worldSpaceNormal = normal;
+
+    // calculate position and transform to homogeneous clip space
+    vec4 pos         = vec4(gl_Vertex.x, height * heightScale, gl_Vertex.z, 1.0);
+    gl_Position      = gl_ModelViewProjectionMatrix * pos;
+    
+    eyeSpacePos      = (gl_ModelViewMatrix * pos).xyz;
+    eyeSpaceNormal   = (gl_NormalMatrix * normal).xyz;
+}