diff options
| -rw-r--r-- | src/glsl/ast_to_hir.cpp | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index 0cb3863b3ef..5e26f21e9af 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -282,8 +282,17 @@ arithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, * means the vector type of a row from A must be the same as the * vector the type of B. */ - if (type_a->row_type() == type_b) - return type_b; + if (type_a->row_type() == type_b) { + /* The resulting vector has a number of elements equal to + * the number of rows of matrix A. */ + const glsl_type *const type = + glsl_type::get_instance(type_a->base_type, + type_a->column_type()->vector_elements, + 1); + assert(type != glsl_type::error_type); + + return type; + } } else { assert(type_b->is_matrix()); @@ -292,8 +301,17 @@ arithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, * the type of A must be the same as the vector type of a column from * B. */ - if (type_a == type_b->column_type()) - return type_a; + if (type_a == type_b->column_type()) { + /* The resulting vector has a number of elements equal to + * the number of columns of matrix B. */ + const glsl_type *const type = + glsl_type::get_instance(type_a->base_type, + type_b->row_type()->vector_elements, + 1); + assert(type != glsl_type::error_type); + + return type; + } } _mesa_glsl_error(loc, state, "size mismatch for matrix multiplication"); |