diff options
| -rw-r--r-- | src/glsl/ir_constant_expression.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index 809ea609a3d..c8320814a3e 100644 --- a/src/glsl/ir_constant_expression.cpp +++ b/src/glsl/ir_constant_expression.cpp @@ -1013,7 +1013,10 @@ ir_call::constant_expression_value() for (unsigned c = 0; c < op[0]->type->components(); c++) data.f[c] = M_PI/180.0 * op[0]->value.f[c]; } else if (strcmp(callee, "reflect") == 0) { - return NULL; /* FINISHME: implement this */ + assert(op[0]->type->is_float()); + float dot_NI = dot(op[1], op[0]); + for (unsigned c = 0; c < op[0]->type->components(); c++) + data.f[c] = op[0]->value.f[c] - 2 * dot_NI * op[1]->value.f[c]; } else if (strcmp(callee, "refract") == 0) { return NULL; /* FINISHME: implement this */ } else if (strcmp(callee, "sign") == 0) { |