1 files changed, 43 insertions, 0 deletions
diff --git a/Third_Party/at.pimaker.ltcgi/Shaders/LTCGI_structs.cginc b/Third_Party/at.pimaker.ltcgi/Shaders/LTCGI_structs.cginc
new file mode 100644
index 0000000..164887f
--- /dev/null
+++ b/Third_Party/at.pimaker.ltcgi/Shaders/LTCGI_structs.cginc
@@ -0,0 +1,43 @@
+#ifndef LTCGI_STRUCTS_INCLUDED
+#define LTCGI_STRUCTS_INCLUDED
+
+#define LTCGI_COLORMODE_STATIC 0
+#define LTCGI_COLORMODE_TEXTURE 1
+#define LTCGI_COLORMODE_SINGLEUV 2
+#define LTCGI_COLORMODE_AUDIOLINK 3
+
+struct ltcgi_flags
+{
+    bool doublesided; // if the light is doublesided or only illuminates the front face
+    bool diffFromLm; // diffuse lighting intensity will not be calculated via LTC but taken directly from the lightmap
+    bool specular; // if the light has a specular component
+    bool diffuse; // if the light has a diffuse component
+    uint colormode; // colormode, see above
+    uint texindex; // index of the texture to shade with, if colormode == LTCGI_COLORMODE_TEXTURE
+    uint lmch, lmidx; // lightmap channel and index
+    bool cylinder; // is this light a cylinder
+    uint alBand; // audiolink band if colormode == LTCGI_COLORMODE_AUDIOLINK
+    bool lmdOnly; // if this light is lightmap-diffuse _only_, that is, no LTC will be run (Lw will be all 0 in that case) - this will never be true on avatars (with LTCGI_ALWAYS_LTC_DIFFUSE)
+};
+
+struct ltcgi_input
+{
+    uint i; // light number
+    float3 Lw[4]; // world space area light vertices, Lw[1] == Lw[3] for triangle lights, shifted by input worldPos (i.e. world space position as seen from (0, 0, 0))
+    bool isTri; // if this is a triangle light, quad if false
+    float4 uvStart; // defines the UV layout of the area (xy = top-left, zw=top-right)
+    float4 uvEnd; // defines the UV layout of the area (xy = bottom-left, zw=bottom-right), different use for cylinders
+    float3 rawColor; // the raw light color, unaffected by any colormode calculations (i.e. exactly what's given as "color" in editor)
+    float3 screenNormal; // world space normal direction of area light
+    ltcgi_flags flags; // flags, see above
+};
+
+struct ltcgi_output
+{
+    ltcgi_input input; // input data that resulted in this output
+
+    float intensity; // intensity output by LTC calculation
+    float3 color; // color output by LTCGI colormode calculation
+};
+
+#endif
+\ No newline at end of file