[hud] Visualize inactive chunks

src/dxvk/hud/dxvk_hud_item.cpp

@@ -1122,8 +1122,11 @@ namespace dxvk::hud {
     draw.w = size.x;
     draw.h = size.y;
     draw.pageMask = chunk.pageMaskOffset;
-    draw.pageCount = chunk.pageCount;
+    draw.pageCountAndActiveBit = chunk.pageCount;
     draw.color = color;
+
+    if (chunk.active)
+      draw.pageCountAndActiveBit |= 1u << 15;
   }
 
 

src/dxvk/hud/dxvk_hud_item.h

@@ -540,7 +540,7 @@ namespace dxvk::hud {
       int16_t w;
       int16_t h;
       uint16_t pageMask;
-      uint16_t pageCount;
+      uint16_t pageCountAndActiveBit;
       uint32_t color;
     };
 

src/dxvk/hud/shaders/hud_chunk_frag_background.frag

@@ -11,10 +11,20 @@ uniform push_data_t {
   float scale;
 };
 
+layout(location = 0) flat in uint v_active;
+
 layout(location = 0) out vec4 o_color;
 
 void main() {
   o_color = vec4(0.0f, 0.0f, 0.0f, 0.75f);
+
+  if (v_active == 0u) {
+    uvec2 pos = uvec2(gl_FragCoord.xy);
+
+    if (((pos.x + pos.y) & 7u) < 2u)
+      o_color.xyz = vec3(0.25f);
+  }
+
   o_color.a *= opacity;
   o_color = linear_to_output(o_color);
 }

src/dxvk/hud/shaders/hud_chunk_vert_background.vert

@@ -26,6 +26,8 @@ vec2 unpack_u16(uint v) {
   return vec2(float(lo >> 16), float(hi >> 16));
 }
 
+layout(location = 0) out uint o_active;
+
 void main() {
   draw_info_t draw = draw_infos[gl_InstanceIndex];
 
@@ -43,5 +45,6 @@ void main() {
   vec2 pixel_pos = pos + size * coord + (2.0f * coord - 1.0f);
   vec2 scaled_pos = 2.0f * (pixel_pos / surface_size_f) - 1.0f;
 
+  o_active = bitfieldExtract(draw.packed_range, 31, 1);
   gl_Position = vec4(scaled_pos, 0.0f, 1.0f);
 }

src/dxvk/hud/shaders/hud_chunk_vert_visualize.vert

@@ -42,7 +42,7 @@ void main() {
   o_coord = coord;
   o_color = draw.color;
   o_mask_index = bitfieldExtract(draw.packed_range,  0, 16);
-  o_page_count = bitfieldExtract(draw.packed_range, 16, 16);
+  o_page_count = bitfieldExtract(draw.packed_range, 16, 15);
 
   vec2 surface_size_f = vec2(surface_size) / scale;