bug fix, sorry, mikeeusa... but make dotproduct*scale actually behave the intended...

[xonotic/netradiant.git] / tools / quake3 / q3map2 / shaders.c

diff --git a/tools/quake3/q3map2/shaders.c b/tools/quake3/q3map2/shaders.c
index 26d4b20d957374945aa118be5689474f376837fa..72d23b006d7811977d39ffb303d1dbb67ee897d6 100644 (file)
--- a/tools/quake3/q3map2/shaders.c
+++ b/tools/quake3/q3map2/shaders.c
@@ -100,7 +100,7 @@ void ColorMod( colorMod_t *cm, int numVerts, bspDrawVert_t *drawVerts )
                                
                                case CM_COLOR_DOT_PRODUCT_SCALE:
                                        c = DotProduct( dv->normal, cm2->data );
-                                       c = cm2->data[4] + c * (cm2->data[5] - cm2->data[4]);
+                                       c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
                                        VectorSet( mult, c, c, c );
                                        break;
                                
@@ -110,7 +110,7 @@ void ColorMod( colorMod_t *cm, int numVerts, bspDrawVert_t *drawVerts )
                                
                                case CM_ALPHA_DOT_PRODUCT_SCALE:
                                        c = DotProduct( dv->normal, cm2->data );
-                                       c = cm2->data[4] + c * (cm2->data[5] - cm2->data[4]);
+                                       c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
                                        mult[ 3 ] = c;
                                        break;
                                
@@ -123,7 +123,7 @@ void ColorMod( colorMod_t *cm, int numVerts, bspDrawVert_t *drawVerts )
                                case CM_COLOR_DOT_PRODUCT_2_SCALE:
                                        c = DotProduct( dv->normal, cm2->data );
                                        c *= c;
-                                       c = (c - cm2->data[4]) / (cm2->data[5] - cm2->data[4]);
+                                       c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
                                        VectorSet( mult, c, c, c );
                                        break;
                                
@@ -135,7 +135,7 @@ void ColorMod( colorMod_t *cm, int numVerts, bspDrawVert_t *drawVerts )
                                case CM_ALPHA_DOT_PRODUCT_2_SCALE:
                                        c = DotProduct( dv->normal, cm2->data );
                                        c *= c;
-                                       c = (c - cm2->data[4]) / (cm2->data[5] - cm2->data[4]);
+                                       c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
                                        mult[ 3 ] = c;
                                        break;
                                
@@ -1776,7 +1776,7 @@ static void ParseShaderFile( const char *filename )
                                        else if( !Q_stricmp( token, "dotProductScale" ) )
                                        {
                                                cm->type = CM_COLOR_DOT_PRODUCT_SCALE + alpha;
-                                               Parse1DMatrixAppend( shaderText, 3, cm->data );
+                                               Parse1DMatrixAppend( shaderText, 5, cm->data );
                                        }
                                        
                                        /* dotProduct2 ( X Y Z ) */