diff options
| author | yum <yum.food.vr@gmail.com> | 2025-03-17 19:02:12 -0700 |
|---|---|---|
| committer | yum <yum.food.vr@gmail.com> | 2025-03-17 19:18:16 -0700 |
| commit | 1f96ed7dd57831f0d4c817dacebb1ecd2dfcca9f (patch) | |
| tree | 6583bf70ce0d2f5547121b629335b26e4bfc5b3e /decals.cginc | |
| parent | 0bdd12598e22932d14fb71b16f9ad840d544d12d (diff) | |
converting decals to static branching
and add a shit ton of features
and add 3 more slots, for a total of 4
Diffstat (limited to 'decals.cginc')
| -rw-r--r-- | decals.cginc | 283 |
1 files changed, 259 insertions, 24 deletions
diff --git a/decals.cginc b/decals.cginc index c356d45..bf09b6c 100644 --- a/decals.cginc +++ b/decals.cginc @@ -5,31 +5,266 @@ #include "globals.cginc"
#include "math.cginc"
+// Struct to hold all decal parameters
+struct DecalParams {
+ float4 color;
+ float opacity;
+ float angle;
+ float uv_channel;
+ float4 mainTex_ST;
+ int tiling_mode;
+ int alpha_blend_mode;
+ Texture2D mainTex;
+ bool sdf_enabled;
+ bool sdf_invert;
+ float sdf_threshold;
+ bool mask_enabled;
+ Texture2D mask;
+ bool normal_enabled;
+ Texture2D normalTex;
+ float normal_scale;
+ bool reflections_enabled;
+ Texture2D metallicGlossMap;
+ float metallic_value;
+ float smoothness_value;
+};
+
+// Macro to initialize decal parameters
+#define INIT_DECAL_PARAMS(params, prefix) \
+ params.color = prefix##Color; \
+ params.opacity = prefix##Opacity; \
+ params.angle = prefix##Angle; \
+ params.uv_channel = prefix##UV_Channel; \
+ params.mainTex_ST = prefix##MainTex_ST; \
+ params.tiling_mode = prefix##Tiling_Mode; \
+ params.alpha_blend_mode = prefix##Alpha_Blend_Mode; \
+ params.mainTex = prefix##MainTex; \
+ params.sdf_enabled = prefix##SDF_Enabled; \
+ params.sdf_invert = prefix##SDF_Invert; \
+ params.sdf_threshold = prefix##SDF_Threshold; \
+ params.mask_enabled = prefix##Mask_Enabled; \
+ params.mask = prefix##Mask; \
+ params.normal_enabled = prefix##Normal_Enabled; \
+ params.normalTex = prefix##Normal; \
+ params.normal_scale = prefix##Normal_Scale; \
+ params.reflections_enabled = prefix##Reflections_Enabled; \
+ params.metallicGlossMap = prefix##MetallicGlossMap; \
+ params.metallic_value = prefix##Metallic; \
+ params.smoothness_value = prefix##Smoothness
+
+#define APPLY_DECAL_SEC00_GENERIC(i, albedo, normal_tangent, metallic, smoothness, params) \
+ float2x2 decal_rot = float2x2( \
+ cos(params.angle * TAU), -sin(params.angle * TAU), \
+ sin(params.angle * TAU), cos(params.angle * TAU) \
+ ); \
+ \
+ float2 raw_decal_uv = (params.uv_channel == 0) ? i.uv01.xy : i.uv01.zw; \
+ float2 decal_uv = (raw_decal_uv * params.mainTex_ST.xy + params.mainTex_ST.zw); \
+ decal_uv = mul(decal_rot, decal_uv); \
+ decal_uv = (params.tiling_mode == DECAL_TILING_MODE_CLAMP ? saturate(decal_uv) : decal_uv);
+
+#define APPLY_DECAL_SEC01_SDF_ON(i, albedo, normal_tangent, metallic, smoothness, params) \
+ float4 decal_albedo; \
+ { \
+ float4 sdf_sample = params.mainTex.SampleLevel(linear_repeat_s, decal_uv, 0); \
+ float sd = sdf_sample.r; \
+ sd = params.sdf_invert ? 1 - sd : sd; \
+ sd = (sd > params.sdf_threshold ? 1 : 0); \
+ decal_albedo = params.color * sd; \
+ decal_albedo.a *= params.opacity; \
+ }
+
+#define APPLY_DECAL_SEC01_SDF_OFF(i, albedo, normal_tangent, metallic, smoothness, params) \
+ float4 decal_albedo; \
+ { \
+ decal_albedo = params.mainTex.Sample(linear_repeat_s, decal_uv); \
+ decal_albedo *= params.color; \
+ decal_albedo.a *= params.opacity; \
+ }
+
+#define APPLY_DECAL_SEC02_CLAMP_ON(i, albedo, normal_tangent, metallic, smoothness, params) \
+ { \
+ float eps = 1e-4; \
+ float2 uv_clamped = step(eps, decal_uv) * step(decal_uv, 1 - eps); \
+ decal_albedo.a *= uv_clamped.x * uv_clamped.y; \
+ }
+
+#define APPLY_DECAL_SEC02_CLAMP_OFF(i, albedo, normal_tangent, metallic, smoothness, params) {}
+
+#define APPLY_DECAL_SEC03_MASK_ON(i, albedo, normal_tangent, metallic, smoothness, params) \
+ float decal_mask = params.mask.Sample(linear_repeat_s, raw_decal_uv); \
+ decal_albedo.a *= decal_mask;
+
+#define APPLY_DECAL_SEC03_MASK_OFF(i, albedo, normal_tangent, metallic, smoothness, params) \
+ float decal_mask = 1;
+
+#define APPLY_DECAL_SEC04_BLEND_MODE_ALPHA_BLEND(i, albedo, normal_tangent, metallic, smoothness, params) \
+ albedo = alphaBlend(albedo, decal_albedo);
+
+#define APPLY_DECAL_SEC04_BLEND_MODE_REPLACE(i, albedo, normal_tangent, metallic, smoothness, params) \
+ albedo = lerp(albedo, decal_albedo, decal_mask);
+
+#define APPLY_DECAL_SEC05_NORMAL_ON(i, albedo, normal_tangent, metallic, smoothness, params) \
+ float3 decal_normal = UnpackScaleNormal( \
+ params.normalTex.Sample(linear_repeat_s, decal_uv), \
+ params.normal_scale * decal_albedo.a); \
+ normal_tangent = lerp(normal_tangent, decal_normal, decal_albedo.a);
+
+#define APPLY_DECAL_SEC05_NORMAL_OFF(i, albedo, normal_tangent, metallic, smoothness, params) {}
+
+#define APPLY_DECAL_SEC06_REFLECTIONS_ON(i, albedo, normal_tangent, metallic, smoothness, params) \
+ float4 metallic_gloss = params.metallicGlossMap.Sample(linear_repeat_s, decal_uv); \
+ metallic = lerp(metallic, metallic_gloss.r * params.metallic_value, decal_albedo.a); \
+ smoothness = lerp(smoothness, metallic_gloss.a * params.smoothness_value, decal_albedo.a);
+
+#define APPLY_DECAL_SEC06_REFLECTIONS_OFF(i, albedo, normal_tangent, metallic, smoothness, params) {}
+
void applyDecals(in v2f i, inout float4 albedo, inout float3 normal_tangent, inout float metallic, inout float smoothness) {
-#if defined(_DECAL0)
- float2x2 decal0_rot = float2x2(
- cos(_Decal0_Angle * TAU), -sin(_Decal0_Angle * TAU),
- sin(_Decal0_Angle * TAU), cos(_Decal0_Angle * TAU)
- );
- float2 decal0_uv = mul(decal0_rot, i.uv01.xy);
- decal0_uv = (decal0_uv * _Decal0_MainTex_ST.xy + _Decal0_MainTex_ST.zw) * _Decal0_Tiling_Mode;
- decal0_uv = (_Decal0_Tiling_Mode == DECAL_TILING_MODE_CLAMP ? saturate(decal0_uv) : decal0_uv);
-
- float4 decal0_albedo = _Decal0_MainTex.Sample(linear_repeat_s, decal0_uv) * _Decal0_Color;
- decal0_albedo.a *= _Decal0_Opacity;
- albedo = alphaBlend(albedo, decal0_albedo);
-
-#if defined(_DECAL0_NORMAL)
- float3 decal0_normal = UnpackScaleNormal(
- _Decal0_Normal.Sample(linear_repeat_s, decal0_uv), _Decal0_Normal_Scale * _Decal0_Opacity);
- normal_tangent = blendNormalsHill12(normal_tangent, decal0_normal);
-#endif
-#if defined(_DECAL0_REFLECTIONS)
- float4 metallic_gloss = _Decal0_MetallicGlossMap.Sample(linear_repeat_s, decal0_uv);
- metallic = lerp(metallic, metallic_gloss.r * _Decal0_Metallic, decal0_albedo.a);
- smoothness = lerp(smoothness, metallic_gloss.a * _Decal0_Smoothness, decal0_albedo.a);
-#endif
-#endif
+ DecalParams decal;
+ #if defined(_DECAL0)
+ {
+ INIT_DECAL_PARAMS(decal, _Decal0_);
+ APPLY_DECAL_SEC00_GENERIC(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #if defined(_DECAL0_SDF)
+ APPLY_DECAL_SEC01_SDF_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC01_SDF_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.tiling_mode == DECAL_TILING_MODE_CLAMP) {
+ APPLY_DECAL_SEC02_CLAMP_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC02_CLAMP_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL0_MASK)
+ APPLY_DECAL_SEC03_MASK_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC03_MASK_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.alpha_blend_mode == DECAL_ALPHA_BLEND_MODE_ALPHA_BLEND) {
+ APPLY_DECAL_SEC04_BLEND_MODE_ALPHA_BLEND(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC04_BLEND_MODE_REPLACE(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL0_NORMAL)
+ APPLY_DECAL_SEC05_NORMAL_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC05_NORMAL_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ #if defined(_DECAL0_REFLECTIONS)
+ APPLY_DECAL_SEC06_REFLECTIONS_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC06_REFLECTIONS_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ }
+ #endif // _DECAL0
+ #if defined(_DECAL1)
+ {
+ INIT_DECAL_PARAMS(decal, _Decal1_);
+ APPLY_DECAL_SEC00_GENERIC(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #if defined(_DECAL1_SDF)
+ APPLY_DECAL_SEC01_SDF_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC01_SDF_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.tiling_mode == DECAL_TILING_MODE_CLAMP) {
+ APPLY_DECAL_SEC02_CLAMP_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC02_CLAMP_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL1_MASK)
+ APPLY_DECAL_SEC03_MASK_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC03_MASK_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.alpha_blend_mode == DECAL_ALPHA_BLEND_MODE_ALPHA_BLEND) {
+ APPLY_DECAL_SEC04_BLEND_MODE_ALPHA_BLEND(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC04_BLEND_MODE_REPLACE(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL1_NORMAL)
+ APPLY_DECAL_SEC05_NORMAL_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC05_NORMAL_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ #if defined(_DECAL1_REFLECTIONS)
+ APPLY_DECAL_SEC06_REFLECTIONS_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC06_REFLECTIONS_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ }
+ #endif // _DECAL1
+ #if defined(_DECAL2)
+ {
+ INIT_DECAL_PARAMS(decal, _Decal2_);
+ APPLY_DECAL_SEC00_GENERIC(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #if defined(_DECAL2_SDF)
+ APPLY_DECAL_SEC01_SDF_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC01_SDF_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.tiling_mode == DECAL_TILING_MODE_CLAMP) {
+ APPLY_DECAL_SEC02_CLAMP_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC02_CLAMP_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL2_MASK)
+ APPLY_DECAL_SEC03_MASK_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC03_MASK_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.alpha_blend_mode == DECAL_ALPHA_BLEND_MODE_ALPHA_BLEND) {
+ APPLY_DECAL_SEC04_BLEND_MODE_ALPHA_BLEND(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC04_BLEND_MODE_REPLACE(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL2_NORMAL)
+ APPLY_DECAL_SEC05_NORMAL_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC05_NORMAL_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ #if defined(_DECAL2_REFLECTIONS)
+ APPLY_DECAL_SEC06_REFLECTIONS_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC06_REFLECTIONS_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ }
+ #endif // _DECAL2
+ #if defined(_DECAL3)
+ {
+ INIT_DECAL_PARAMS(decal, _Decal3_);
+ APPLY_DECAL_SEC00_GENERIC(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #if defined(_DECAL3_SDF)
+ APPLY_DECAL_SEC01_SDF_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC01_SDF_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.tiling_mode == DECAL_TILING_MODE_CLAMP) {
+ APPLY_DECAL_SEC02_CLAMP_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC02_CLAMP_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL3_MASK)
+ APPLY_DECAL_SEC03_MASK_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC03_MASK_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ if (decal.alpha_blend_mode == DECAL_ALPHA_BLEND_MODE_ALPHA_BLEND) {
+ APPLY_DECAL_SEC04_BLEND_MODE_ALPHA_BLEND(i, albedo, normal_tangent, metallic, smoothness, decal);
+ } else {
+ APPLY_DECAL_SEC04_BLEND_MODE_REPLACE(i, albedo, normal_tangent, metallic, smoothness, decal);
+ }
+ #if defined(_DECAL3_NORMAL)
+ APPLY_DECAL_SEC05_NORMAL_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC05_NORMAL_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ #if defined(_DECAL3_REFLECTIONS)
+ APPLY_DECAL_SEC06_REFLECTIONS_ON(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #else
+ APPLY_DECAL_SEC06_REFLECTIONS_OFF(i, albedo, normal_tangent, metallic, smoothness, decal);
+ #endif
+ }
+ #endif // _DECAL3
}
#endif // __DECALS
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