shader constant tweak vars

src/base/base_shader.gh

@@ -79,7 +79,7 @@ u32 countof(T arr[N])
 ////////////////////////////////////////////////////////////
 //~ Derivative helpers
 
-#define fwidth_fine(v) (abs(ddx_fine((v))) + abs(ddx_fine((v))))
+#define fwidth_fine(v) (abs(ddx_fine((v))) + abs(ddy_fine((v))))
 
 ////////////////////////////////////////////////////////////
 //~ Color helpers

src/glyph_cache/glyph_cache.c

@@ -171,20 +171,7 @@ GC_Run GC_RunFromString32(Arena *arena, String32 str32, GC_FontKey font, f32 fon
       GC_Glyph *glyph = ready_glyphs[glyph_idx];
       GC_RunRect *rect = &result.rects[glyph_idx];
 
-      f32 advance = glyph->advance;
+      f32 advance = RoundF32(glyph->advance);
-      if (TweakBool("Ceil glyph advances", 0))
-      {
-        advance = CeilF32(advance);
-      }
-      if (TweakBool("Floor glyph advances", 0))
-      {
-        advance = FloorF32(advance);
-      }
-      if (TweakBool("Round glyph advances", 1))
-      {
-        advance = RoundF32(advance);
-      }
-
       Rng2 bounds = glyph->bounds;
 
       rect->tex = glyph->atlas->tex_ref;

src/gpu/gpu_dx12/gpu_dx12_core.c

@@ -1720,10 +1720,17 @@ i64 G_CommitCommandList(G_CommandListHandle cl_handle)
   for (i32 i = 0; i < countof(bound_compute_constants); ++i)  { bound_compute_constants[i]  = U64Max; }
   for (i32 i = 0; i < countof(bound_graphics_constants); ++i) { bound_graphics_constants[i] = U64Max; }
 
+  // Fill built-in constants
   if (!G_IsRefNil(queue->print_buffer_ref))
   {
     slotted_constants[G_ShaderConst_PrintBufferRef] = queue->print_buffer_ref.v;
   }
+  {
+    b32 tweak_b32 = TweakBool("GPU tweak-bool", 1);
+    f32 tweak_f32 = TweakFloat("GPU tweak-float", 1, 0, 1, .precision = 3);
+    slotted_constants[G_ShaderConst_TweakB32] = tweak_b32;
+    slotted_constants[G_ShaderConst_TweakF32] = *(u32 *)&tweak_f32;
+  }
 
   // Rasterizer state
   D3D12_VIEWPORT bound_viewport = Zi;

src/gpu/gpu_shader_core.cgh

@@ -35,11 +35,11 @@ Struct(G_SamplerStateRef)          { u32 v; };
 
 //
 // D3D12 exposes 64 root constants and Vulkan exposes 32 push constants.
-// Supposedly amd hardware will spill constants to scratch memory once there
+// Supposedly amd hardware will start spilling constants once there
-// are more than 13: https://gpuopen.com/learn/rdna-performance-guide/
+// are more than 12: https://gpuopen.com/learn/rdna-performance-guide/
 //
 #define G_NumGeneralPurposeConstants    (8)  // Constants available for any usage
-#define G_NumReservedConstants          (1)  // Constants reserved for usage by the GPU layer
+#define G_NumReservedConstants          (4)  // Constants reserved for internal usage by the GPU layer
 #define G_NumConstants (G_NumGeneralPurposeConstants + G_NumReservedConstants)
 
 #if IsLanguageC
@@ -55,6 +55,22 @@ Struct(G_SamplerStateRef)          { u32 v; };
   #define G_DeclConstant(type, name, slot) G_ForceDeclConstant(type, name, slot)
 #endif
 
+////////////////////////////////////////////////////////////
+//~ Reserved constants
+
+// The constants declared below assume this configuration is accurate for slot usage
+StaticAssert(G_NumGeneralPurposeConstants == 8);
+StaticAssert(G_NumReservedConstants >= 3);
+
+G_ForceDeclConstant(G_RWByteAddressBufferRef, G_ShaderConst_PrintBufferRef,   8);
+G_ForceDeclConstant(b32,                      G_ShaderConst_TweakB32,         9);
+G_ForceDeclConstant(f32,                      G_ShaderConst_TweakF32,         10);
+
+#if IsLanguageG
+  #define G_TweakBool  G_ShaderConst_TweakB32
+  #define G_TweakFloat G_ShaderConst_TweakF32
+#endif
+
 ////////////////////////////////////////////////////////////
 //~ Resource dereference
 
@@ -95,15 +111,6 @@ Struct(G_SamplerStateRef)          { u32 v; };
   template<typename T> Vec3U32  countof(RWTexture3D<T> tex)         { Vec3U32 result; tex.GetDimensions(result.x, result.y, result.z); return result; }
 #endif
 
-////////////////////////////////////////////////////////////
-//~ Reserved constants
-
-// The constants declared below assume this configuration is accurate for slot usage
-StaticAssert(G_NumGeneralPurposeConstants == 8);
-StaticAssert(G_NumReservedConstants == 1);
-
-G_ForceDeclConstant(G_RWByteAddressBufferRef, G_ShaderConst_PrintBufferRef,   8);
-
 ////////////////////////////////////////////////////////////
 //~ Debug printf
 

src/pp/pp_vis/pp_vis_core.c

@@ -1298,7 +1298,7 @@ void V_TickForever(WaveLaneCtx *lane)
 
     V_Palette *palette = &frame->palette;
     {
-      f32 palette_ease = TweakFloat("Command palette ease", 30, 1, 100) * frame->dt;
+      f32 palette_ease = TweakFloat("Debug palette ease", 30, 1, 100) * frame->dt;
       palette->show = LerpF32(palette->show, palette->pref_show, palette_ease);
     }
     if (palette->show > 0.001)
@@ -1330,8 +1330,7 @@ void V_TickForever(WaveLaneCtx *lane)
         UI_Push(BackgroundColor, window_background_color);
         UI_Push(BorderColor, window_border_color);
         UI_Push(BorderSize, theme.window_bd_sz);
-        // UI_Push(Rounding, UI_RPIX(15 * theme.rounding));
+        UI_Push(Rounding, UI_RGROW(0.095 * theme.rounding));
-        UI_Push(Rounding, UI_RGROW(0.075 * theme.rounding));
         UI_Push(Width, UI_FNT(40, 0));
         UI_Push(Height, UI_SHRINK(0, 0));
         UI_Push(ChildLayoutAxis, Axis_Y);
@@ -1362,7 +1361,7 @@ void V_TickForever(WaveLaneCtx *lane)
               UI_SetNext(FontSize, UI_Top(FontSize) * theme.h2);
               UI_SetNext(ChildAlignment, UI_Region_Center);
               UI_SetNext(Width, UI_SHRINK(0, 1));
-              UI_SetNext(Text, Lit("Command Palette"));
+              UI_SetNext(Text, Lit("Debug Palette"));
               UI_SetNext(Flags, UI_BoxFlag_DrawText);
               UI_BuildBox();
 

src/ui/ui_shaders.g

@@ -98,7 +98,7 @@ PixelShader(UI_DRectPS, UI_DRectPSOutput, UI_DRectPSInput input)
 
     // Border color
     {
-      f32 half_border_dist_fwidth = fwidth_fine(border_dist) * 0.5;
+      f32 half_border_dist_fwidth = fwidth(border_dist) * 0.5;
       f32 border_alpha = smoothstep(half_border_dist_fwidth, -half_border_dist_fwidth, border_dist);
       final_color = lerp(final_color, border_color, border_alpha);
     }