Make sure attribute registers are declared correctly in weird SM1 case.

icculus · Oct 13, 2020 · 54a5dcb · 54a5dcb
1 parent 410f63c
commit 54a5dcb
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/mojoshader.c b/mojoshader.c
@@ -1736,6 +1736,16 @@ static void state_texops(Context *ctx, const char *opcode,
         TextureType ttyp = (dims == 2) ? TEXTURE_TYPE_2D : TEXTURE_TYPE_CUBE;
         add_sampler(ctx, dst->regnum, ttyp, texbem);
     } // if
+
+    add_attribute_register(ctx, REG_TYPE_TEXTURE, dst->regnum,
+                           MOJOSHADER_USAGE_TEXCOORD, dst->regnum, 0xF, 0);
+
+    // Strictly speaking, there should be a TEX opcode prior to this call that
+    //  should fill in this metadata, but I'm not sure that's required for the
+    //  shader to assemble in D3D, so we'll do this so we don't fail with a
+    //  cryptic error message even if the developer didn't do the TEX.
+    add_attribute_register(ctx, REG_TYPE_TEXTURE, src->regnum,
+                           MOJOSHADER_USAGE_TEXCOORD, src->regnum, 0xF, 0);
 } // state_texops
 
 static void state_texbem(Context *ctx, const char *opcode)