add ltcgi, alpha multiplier

1 files changed, 146 insertions, 0 deletions

diff --git a/Third_Party/at.pimaker.ltcgi/Shaders/LTCGI_uniform.cginc b/Third_Party/at.pimaker.ltcgi/Shaders/LTCGI_uniform.cginc
new file mode 100644
index 0000000..2bf4673
--- /dev/null
+++ b/Third_Party/at.pimaker.ltcgi/Shaders/LTCGI_uniform.cginc
@@ -0,0 +1,146 @@
+#ifndef LTCGI_UNIFORM_INCLUDED
+#define LTCGI_UNIFORM_INCLUDED
+
+// global sampler (trilinear)
+#ifndef LTCGI_SAMPLER
+SamplerState sampler_LTCGI_trilinear_clamp_sampler;
+#define LTCGI_SAMPLER sampler_LTCGI_trilinear_clamp_sampler
+#define LTCGI_SAMPLER_RAW _LTCGI_trilinear_clamp_sampler
+#endif
+
+// LUTs
+#ifndef SHADER_TARGET_SURFACE_ANALYSIS_MOJOSHADER
+#ifndef LTCGI_DISABLE_LUT2
+uniform Texture2D<float4> _Udon_LTCGI_lut2;
+#endif
+uniform Texture2D<float4> _Udon_LTCGI_lut1;
+#endif
+
+#ifndef SHADER_TARGET_SURFACE_ANALYSIS_MOJOSHADER
+uniform Texture2D<float4> _Udon_LTCGI_static_uniforms;
+#endif
+
+#ifdef LTCGI_STATIC_UNIFORMS
+
+float4 _Udon_LTCGI_Vertices_0_get(uint i) {
+    return _Udon_LTCGI_static_uniforms[uint2(0, i)];
+}
+float4 _Udon_LTCGI_Vertices_1_get(uint i) {
+    return _Udon_LTCGI_static_uniforms[uint2(1, i)];
+}
+float4 _Udon_LTCGI_Vertices_2_get(uint i) {
+    return _Udon_LTCGI_static_uniforms[uint2(2, i)];
+}
+float4 _Udon_LTCGI_Vertices_3_get(uint i) {
+    return _Udon_LTCGI_static_uniforms[uint2(3, i)];
+}
+
+#else
+
+// vertices in object space; w component is UV (legacy)
+uniform float4 _Udon_LTCGI_Vertices_0[MAX_SOURCES];
+uniform float4 _Udon_LTCGI_Vertices_1[MAX_SOURCES];
+uniform float4 _Udon_LTCGI_Vertices_2[MAX_SOURCES];
+uniform float4 _Udon_LTCGI_Vertices_3[MAX_SOURCES];
+
+float4 _Udon_LTCGI_Vertices_0_get(uint i) {
+    return _Udon_LTCGI_Vertices_0[i];
+}
+float4 _Udon_LTCGI_Vertices_1_get(uint i) {
+    return _Udon_LTCGI_Vertices_1[i];
+}
+float4 _Udon_LTCGI_Vertices_2_get(uint i) {
+    return _Udon_LTCGI_Vertices_2[i];
+}
+float4 _Udon_LTCGI_Vertices_3_get(uint i) {
+    return _Udon_LTCGI_Vertices_3[i];
+}
+
+#endif
+
+// light source count, maximum is MAX_SOURCES
+uniform uint _Udon_LTCGI_ScreenCount;
+
+// per-renderer mask to select sources,
+// for max perf update _Udon_LTCGI_ScreenCount too
+uniform bool _Udon_LTCGI_Mask[MAX_SOURCES];
+
+// extra data per light source, layout:
+//  color.r   color.g   color.b   flags*
+// * b0=double-sided, b1=diffuse-from-lightmap, b2=specular, b3=diffuse,
+//   b4-b7=texture index (0=video, (n>0)=n-1)
+//   b8-b9=color mode
+//   b10-b11=lightmap channel (0=disabled, 1=r, 2=g, 3=b)
+//   b12=cylinder
+//   b13-14=audio link band
+//   b15=lightmap diffuse only
+// (color black = fully disabled)
+uniform float4 _Udon_LTCGI_ExtraData[MAX_SOURCES];
+
+ltcgi_flags ltcgi_parse_flags(uint val, bool noLmDiff)
+{
+    ltcgi_flags ret = (ltcgi_flags)0;
+    ret.doublesided = (val & 1) == 1;
+
+    #ifdef LTCGI_ALWAYS_LTC_DIFFUSE
+    ret.diffFromLm  = false;
+    #else
+    ret.diffFromLm  = !noLmDiff && (val & 2) == 2;
+    #endif
+
+    ret.diffuse     = (val & 8) == 8;
+
+    ret.specular    = (val & 4) == 4;
+    ret.texindex    = (val & 0xf0) >> 4;
+    ret.colormode   = (val & 0x300) >> 8;
+
+    #ifdef LTCGI_ALWAYS_LTC_DIFFUSE
+    ret.lmch        = 0;
+    #else
+    ret.lmch        = (val & 0xC00) >> 10;
+    #endif
+
+    ret.cylinder    = (val & (1 << 12)) == (1 << 12);
+
+    #ifdef LTCGI_AUDIOLINK
+    ret.alBand      = (val & 0x6000) >> 13;
+    #endif
+
+    ret.lmdOnly     = (val & (1 << 15)) == (1 << 15);
+
+    return ret;
+}
+
+// video input
+#ifndef SHADER_TARGET_SURFACE_ANALYSIS_MOJOSHADER
+uniform Texture2D<float4> _Udon_LTCGI_Texture_LOD0;
+#ifndef LTCGI_FAST_SAMPLING
+uniform Texture2D<float4> _Udon_LTCGI_Texture_LOD1;
+uniform Texture2D<float4> _Udon_LTCGI_Texture_LOD2;
+uniform Texture2D<float4> _Udon_LTCGI_Texture_LOD3;
+#endif
+#endif
+
+// static textures
+#ifdef LTCGI_STATIC_TEXTURES
+UNITY_DECLARE_TEX2DARRAY_NOSAMPLER(_Udon_LTCGI_Texture_LOD0_arr);
+#ifndef LTCGI_FAST_SAMPLING
+UNITY_DECLARE_TEX2DARRAY_NOSAMPLER(_Udon_LTCGI_Texture_LOD1_arr);
+UNITY_DECLARE_TEX2DARRAY_NOSAMPLER(_Udon_LTCGI_Texture_LOD2_arr);
+UNITY_DECLARE_TEX2DARRAY_NOSAMPLER(_Udon_LTCGI_Texture_LOD3_arr);
+#endif
+#endif
+
+// lightmap
+#ifndef SHADER_TARGET_SURFACE_ANALYSIS_MOJOSHADER
+#ifndef LTCGI_ALWAYS_LTC_DIFFUSE
+uniform Texture2D<float4> _Udon_LTCGI_Lightmap;
+#endif
+#endif
+uniform float3 _Udon_LTCGI_LightmapMult;
+uniform float4 _Udon_LTCGI_LightmapST;
+
+// global toggle
+uniform float _Udon_LTCGI_GlobalEnable;
+
+#endif
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