Integrated new bgfx-python changes

Author: fbertola

demo/shaders/demo.FieldFragmentShader.frag

@@ -60,8 +60,40 @@ vec3 inferno(float t) {
 
 }
 
+vec3 posterize(vec3 _rgb, float _numColors)
+{
+	return floor(_rgb*_numColors) / _numColors;
+}
+
+vec4 posterize(vec4 _rgba, float _numColors)
+{
+	return vec4(posterize(_rgba.xyz, _numColors), _rgba.w);
+}
+
+#define NUM_OCTAVES 5
+
+float rand(float n){return fract(sin(n) * 43758.5453123);}
+
+float noise(float p){
+	float fl = floor(p);
+  float fc = fract(p);
+	return mix(rand(fl), rand(fl + 1.0), fc);
+}
+
+float fbm(float x) {
+	float v = 0.0;
+	float a = 0.5;
+	float shift = float(100);
+	for (int i = 0; i < NUM_OCTAVES; ++i) {
+		v += a * noise(x);
+		x = x * 2.0 + shift;
+		a *= 0.5;
+	}
+	return v;
+}
+
 void main()
 {
     vec4 col = texture2D(s_texColor, v_texcoord0.xy*0.5 + 0.5);
-    gl_FragColor = vec4(plasma(col.x), col.x);
+    gl_FragColor = vec4(plasma(fbm(col.x)), col.x);
 }

demo/simulation_demo.py

@@ -89,6 +89,7 @@ def init(self, platform_data):
         )
 
         bgfx.setDebug(BGFX_DEBUG_TEXT)
+        # bgfx.setViewClear(0, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH, 0xFFFFFFFF, 1.0, 0)
         bgfx.setViewClear(0, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH, 0x1a0427FF, 1.0, 0)
 
         self.vertex_layout = bgfx.VertexLayout()

demo/utils/imgui_utils.py

@@ -114,11 +114,12 @@ def show_properties_dialog(fb_width, fb_height, hidpi: bool):
     stats = bgfx.getStats()
     to_ms_cpu = 1000.0 / stats.cpuTimerFreq
     to_ms_gpu = 1000.0 / stats.gpuTimerFreq
-    frame_ms = max(float(stats.cpuTimeEnd - stats.cpuTimeBegin), 1.0e-9)
+    frame_ms = float(stats.cpuTimeFrame) * to_ms_cpu
 
-    s_frame_time.push_sample(frame_ms * to_ms_cpu)
+    s_frame_time.push_sample(frame_ms)
+    fps = 1000.0 / s_frame_time.m_avg
 
-    frame_text_overlay = f"\uf063{s_frame_time.m_min:7.3f}ms, \uf062{s_frame_time.m_max:7.3f}ms\nAvg: {s_frame_time.m_avg:7.3f}ms, {(stats.cpuTimerFreq / frame_ms):6.2f} FPS"
+    frame_text_overlay = f"\uf063{s_frame_time.m_min:7.3f}ms, \uf062{s_frame_time.m_max:7.3f}ms\nAvg: {s_frame_time.m_avg:7.3f}ms, {fps:6.2f} FPS"
     ImGui.PushStyleColor(
         ImGui.ImGuiCol_PlotHistogram, ImGui.ImVec4(0.0, 0.5, 0.15, 1.0)
     )