Implementation of YoYoGames/GameMaker-Bugs#2960

YoYoGames · Oct 31, 2024 · ab51a70 · ab51a70
1 parent 8f3dd2e
commit ab51a70
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diff --git a/scripts/Matrix.js b/scripts/Matrix.js
@@ -617,6 +617,15 @@ Matrix.prototype.Invert = function(that)
 
         this.m = b;
     }
+
+	if (det != 0)
+	{
+		return true;
+	}
+	else
+	{
+		return false;		// indicate that we couldn't invert the matrix
+	}
 };
 
 Matrix.prototype.TransformVec3 = function(_vec)

diff --git a/scripts/functions/Function_D3D.js b/scripts/functions/Function_D3D.js
@@ -262,6 +262,7 @@ function gpu_set_state(){}
 var matrix_build = WebGL_Matrix_Build;
 var matrix_multiply = WebGL_Matrix_Multiply;
 var matrix_transform_vertex = WebGL_Matrix_Transform_Vertex;
+var matrix_inverse = WebGL_Matrix_Inverse;
 
 var matrix_stack_push = WebGL_matrix_stack_push;
 var matrix_stack_pop = WebGL_matrix_stack_pop;           
@@ -911,6 +912,27 @@ function WebGL_Matrix_Transform_Vertex(_mat, _x, _y, _z)
     return res;
 }
 
+function WebGL_Matrix_Inverse(_s1) {
+
+    var s1 = new Matrix();
+    var inv_s1 = new Matrix();    
+
+    for (var i = 0; i < 16; i++) {
+        s1.m[i] = yyGetReal(_s1[i]);        
+    }
+    var success = inv_s1.Invert(s1);
+    if (!success)
+    {
+        return undefined;
+    }
+
+    var mat = [];
+    for (var i = 0; i < 16; i++) {
+        mat[i] = inv_s1.m[i];
+    }
+    return mat;
+}
+
 function WebGL_matrix_stack_push(_matrix)
 {
     if (g_matstacktop >= g_maxmatstack)