Add frame count test.

test/frame_count.slang

@@ -0,0 +1,30 @@
+#version 450
+
+layout(std140, set = 0, binding = 0) uniform UBO
+{
+   mat4 MVP;
+   uint FrameCount;
+} global;
+
+#pragma stage vertex
+layout(location = 0) in vec4 Position;
+layout(location = 1) in vec2 TexCoord;
+layout(location = 0) out vec2 vTexCoord;
+
+void main()
+{
+   gl_Position = global.MVP * Position;
+   vTexCoord = TexCoord;
+}
+
+#pragma stage fragment
+layout(location = 0) in vec2 vTexCoord;
+layout(location = 0) out vec4 FragColor;
+layout(set = 0, binding = 1) uniform sampler2D Source;
+
+void main()
+{
+   vec3 current = texture(Source, vTexCoord).rgb;
+   FragColor = sqrt(0.5 + 0.4 * sin(float(global.FrameCount) * 6.28 * 0.01)) *
+      vec4(current, 1.0);
+}

test/frame_count.slangp

@@ -0,0 +1,6 @@
+shaders = 1
+shader0 = frame_count.slang
+scale_type0 = source
+scale0 = 1.0
+filter_linear0 = false
+frame_count_mod0 = 100