tutorial: port noise demo to PS3 and Xbox360.

tutorial/03_noise.cpp

@@ -50,7 +50,7 @@ public:
         {
             m_shader = Shader::Create(lolfx_03_noise);
             m_coord = m_shader->GetAttribLocation("in_Position", VertexUsage::Position, 0);
-            m_time_uni = m_shader->GetUniformLocation("in_Time");
+            m_time_uni = m_shader->GetUniformLocation("u_Time");
 
             m_vdecl = new VertexDeclaration(VertexStream<vec2>(VertexUsage::Position));
 
@@ -93,7 +93,6 @@ int main(int argc, char **argv)
     _chdir("../..");
 #endif
 
-    new DebugFps(5, 5);
     new NoiseDemo();
 
     app.Run();

tutorial/03_noise.lolfx

@@ -13,16 +13,16 @@ void main(void)
 
 #version 120
 
-uniform float in_Time;
+uniform float u_Time;
 
-vec3 noise3(vec2 p)
+vec3 noise2d(vec2 p)
 {
     return vec3(fract(sin(dot(p, vec2(12.3453, -54.3353432))) * 8433.235443),
                 fract(sin(dot(p, vec2(34.23232, 98.03537))) * 8294.5345433),
                 fract(sin(dot(p, vec2(82.91234, -19.243533))) * 2912.454369));
 }
 
-vec3 noise3(vec3 p)
+vec3 noise3d(vec3 p)
 {
     return vec3(fract(sin(54.343909 + dot(p, vec3(12.3453, -54.3353432, 34.3490432))) * 8433.235443),
                 fract(sin(93.329945 - dot(p, vec3(34.23232, 98.0353743, 90.2390984))) * 8294.5345433),
@@ -35,10 +35,10 @@ vec3 perlin2d(vec2 p)
     vec2 d = p - a;
     d = d * d * (3.0 - 2.0 * d);
 
-    vec3 n1 = noise3(a);
-    vec3 n2 = noise3(a + vec2(1.0, 0.0));
-    vec3 n3 = noise3(a + vec2(0.0, 1.0));
-    vec3 n4 = noise3(a + vec2(1.0, 1.0));
+    vec3 n1 = noise2d(a);
+    vec3 n2 = noise2d(a + vec2(1.0, 0.0));
+    vec3 n3 = noise2d(a + vec2(0.0, 1.0));
+    vec3 n4 = noise2d(a + vec2(1.0, 1.0));
 
     vec3 q1 = n2 * d.x + n1 * (1.0 - d.x);
     vec3 q2 = n4 * d.x + n3 * (1.0 - d.x);
@@ -57,14 +57,14 @@ vec3 perlin3d(vec3 p)
     vec3 d = p - a;
     d = d * d * (3.0 - 2.0 * d);
 
-    vec3 o1 = noise3(a);
-    vec3 o2 = noise3(a + vec3(1.0, 0.0, 0.0));
-    vec3 o3 = noise3(a + vec3(0.0, 1.0, 0.0));
-    vec3 o4 = noise3(a + vec3(1.0, 1.0, 0.0));
-    vec3 o5 = noise3(a + vec3(0.0, 0.0, 1.0));
-    vec3 o6 = noise3(a + vec3(1.0, 0.0, 1.0));
-    vec3 o7 = noise3(a + vec3(0.0, 1.0, 1.0));
-    vec3 o8 = noise3(a + vec3(1.0, 1.0, 1.0));
+    vec3 o1 = noise3d(a);
+    vec3 o2 = noise3d(a + vec3(1.0, 0.0, 0.0));
+    vec3 o3 = noise3d(a + vec3(0.0, 1.0, 0.0));
+    vec3 o4 = noise3d(a + vec3(1.0, 1.0, 0.0));
+    vec3 o5 = noise3d(a + vec3(0.0, 0.0, 1.0));
+    vec3 o6 = noise3d(a + vec3(1.0, 0.0, 1.0));
+    vec3 o7 = noise3d(a + vec3(0.0, 1.0, 1.0));
+    vec3 o8 = noise3d(a + vec3(1.0, 1.0, 1.0));
 
     vec3 n1 = o2 * d.x + o1 * (1.0 - d.x);
     vec3 n2 = o4 * d.x + o3 * (1.0 - d.x);
@@ -81,8 +81,9 @@ vec3 perlin3d(vec3 p)
 
 void main(void)
 {
-    vec2 xy = gl_FragCoord.xy;
-    float z = in_Time * 2.0;
+    vec2 xy = gl_FragCoord.xy * 2.0;
+    xy.y -= u_Time * 400.0;
+    float z = u_Time * 2.0;
 
     vec3 p = perlin3d(vec3(xy / 160.0, z)) / 2.0
            + perlin3d(vec3(xy / 80.0, z + 1.5)) / 4.0
@@ -91,6 +92,12 @@ void main(void)
            + perlin3d(vec3(xy / 10.0, z + 2.0)) / 32.0
            + perlin3d(vec3(xy / 5.0, z + 1.7)) / 64.0
            + perlin3d(vec3(xy / 2.5, z + 4.2)) / 128.0;
+
+    /* Scroll by adding [-.5,.5] */
+    p -= gl_FragCoord.y / 720.0 - 0.5;
+    p = max(p, 0.0);
+    p = min(p, 1.0);
+
     p = p * p * (3.0 - 2.0 * p);
     p = p * p * (3.0 - 2.0 * p);
     gl_FragColor = vec4(min(p.x * 2.0, 1.0), max(p.x * 1.5 - 0.5, 0.0), 0.0, 1.0);
@@ -99,15 +106,103 @@ void main(void)
 -- HLSL.Vert --
 
 void main(float2 in_Position : POSITION,
-          out float4 out_Position : POSITION)
+          uniform float2 u_WinSize,
+          out float4 out_Position : POSITION,
+          out float2 pass_Position : TEXCOORD0)
 {
+    //pass_Position = in_Position * u_WinSize;
+    pass_Position = in_Position * float2(1280.0, 720.0);
     out_Position = float4(in_Position, 0.0, 1.0);
 }
 
 -- HLSL.Frag --
 
-void main(out float4 out_FragColor : COLOR)
+float3 noise2d(float2 p)
+{
+    return float3(frac(sin(dot(p, float2(12.3453, -54.3353432))) * 8433.235443),
+                  frac(sin(dot(p, float2(34.23232, 98.03537))) * 8294.5345433),
+                  frac(sin(dot(p, float2(82.91234, -19.243533))) * 2912.454369));
+}
+
+float3 noise3d(float3 p)
+{
+    return float3(frac(sin(54.343909 + dot(p, float3(12.3453, -54.3353432, 34.3490432))) * 8433.235443),
+                  frac(sin(93.329945 - dot(p, float3(34.23232, 98.0353743, 90.2390984))) * 8294.5345433),
+                  frac(sin(32.039284 + dot(p, float3(82.91234, -19.243533, 22.3294090))) * 2912.454369));
+}
+
+float3 perlin2d(float2 p)
+{
+    float2 a = floor(p);
+    float2 d = p - a;
+    d = d * d * (3.0 - 2.0 * d);
+
+    float3 n1 = noise2d(a);
+    float3 n2 = noise2d(a + float2(1.0, 0.0));
+    float3 n3 = noise2d(a + float2(0.0, 1.0));
+    float3 n4 = noise2d(a + float2(1.0, 1.0));
+
+    float3 q1 = n2 * d.x + n1 * (1.0 - d.x);
+    float3 q2 = n4 * d.x + n3 * (1.0 - d.x);
+
+    float3 q3 = q2 * d.y + q1 * (1.0 - d.y);
+
+    return q3;
+}
+
+float3 perlin3d(float3 p)
 {
-    out_FragColor = float4(0.7, 0.2, 0.5, 1.0);
+    float3x3 r = float3x3(0.36, 0.48, -0.8, -0.8, 0.60, 0.0, 0.48, 0.64, 0.60);
+    p = mul(r, p);
+
+    float3 a = floor(p);
+    float3 d = p - a;
+    d = d * d * (3.0 - 2.0 * d);
+
+    float3 o1 = noise3d(a);
+    float3 o2 = noise3d(a + float3(1.0, 0.0, 0.0));
+    float3 o3 = noise3d(a + float3(0.0, 1.0, 0.0));
+    float3 o4 = noise3d(a + float3(1.0, 1.0, 0.0));
+    float3 o5 = noise3d(a + float3(0.0, 0.0, 1.0));
+    float3 o6 = noise3d(a + float3(1.0, 0.0, 1.0));
+    float3 o7 = noise3d(a + float3(0.0, 1.0, 1.0));
+    float3 o8 = noise3d(a + float3(1.0, 1.0, 1.0));
+
+    float3 n1 = o2 * d.x + o1 * (1.0 - d.x);
+    float3 n2 = o4 * d.x + o3 * (1.0 - d.x);
+    float3 n3 = o6 * d.x + o5 * (1.0 - d.x);
+    float3 n4 = o8 * d.x + o7 * (1.0 - d.x);
+
+    float3 q1 = n2 * d.y + n1 * (1.0 - d.y);
+    float3 q2 = n4 * d.y + n3 * (1.0 - d.y);
+
+    float3 q3 = q2 * d.z + q1 * (1.0 - d.z);
+
+    return q3;
 }
 
+void main(in float2 pass_Position : TEXCOORD0,
+          uniform float u_Time,
+          out float4 out_FragColor : COLOR)
+{
+    float2 xy = pass_Position;
+    xy.y -= u_Time * 400.0;
+    float z = u_Time * 2.0;
+
+    float3 p = perlin3d(float3(xy / 160.0, z)) / 2.0
+             + perlin3d(float3(xy / 80.0, z + 1.5)) / 4.0
+             + perlin3d(float3(xy / 40.0, z + 0.3)) / 8.0
+             + perlin3d(float3(xy / 20.0, z + 3.3)) / 16.0
+             + perlin3d(float3(xy / 10.0, z + 2.0)) / 32.0
+             + perlin3d(float3(xy / 5.0, z + 1.7)) / 64.0
+             + perlin3d(float3(xy / 2.5, z + 4.2)) / 128.0;
+
+    /* Scroll by adding [-.5,.5] */
+    p -= pass_Position.y / 1440.0;
+    p = max(p, 0.0);
+    p = min(p, 1.0);
+
+    p = p * p * (3.0 - 2.0 * p);
+    p = p * p * (3.0 - 2.0 * p);
+    out_FragColor = float4(min(p.x * 2.0, 1.0), max(p.x * 1.5 - 0.5, 0.0), 0.0, 1.0);
+}