new solver - point generation

vis/res/shaders/4d.vert.glsl

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+#version 440
+
+layout(location=1) uniform float time;
+layout(location=2) uniform mat4 proj;
+layout(location=3) uniform mat4 rot;
+
+layout(location=0) in vec4 pos;
+
+void main() {
+    vec4 pos = rot * pos;
+    gl_Position = proj * vec4(pos.xyz / (1 - pos.w), 1.0);
+}

vis/res/shaders/main.frag.glsl

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+#version 440
+
+layout(location=0) uniform vec4 ucol;
+
+layout(location=0) out vec4 col;
+
+void main() {
+    float d = 1.0 - gl_FragCoord.z;
+    d = (d - 0.5) / 0.7 + 0.5;
+    col = ucol;
+    col.xyz *= d;
+}

vis/res/shaders/main.vert.glsl

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+#version 440
+
+//layout(location=1) uniform float time;
+layout(location=2) uniform mat4 proj;
+//layout(location=3) uniform mat4 rot;
+
+layout(location=0) in vec4 pos;
+
+void main() {
+//    mat3 rot3 = mat3(rot);
+//    vec3 pos3 = rot3 * pos;
+
+    vec3 pos3 = pos.xyz;
+    gl_Position = proj * vec4(pos3, 1.0);
+}