diff options
| author | Kenneth Graunke <[email protected]> | 2012-03-13 11:42:26 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2012-03-26 10:21:44 -0700 |
| commit | ced54dcf9b496dbe0bf254673ecee37014c1ee3b (patch) | |
| tree | e96285b60d5d7cb712dc44a283f9af10468419ec /src/glsl/ir_expression_flattening.cpp | |
| parent | 7f6af4909241de7197e774dee988f574cb576a3b (diff) | |
glsl: Comment that expression flattening is used for matrix operations.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Diffstat (limited to 'src/glsl/ir_expression_flattening.cpp')
| -rw-r--r-- | src/glsl/ir_expression_flattening.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/glsl/ir_expression_flattening.cpp b/src/glsl/ir_expression_flattening.cpp index 0b7c537bd8a..bd4ac67bc1a 100644 --- a/src/glsl/ir_expression_flattening.cpp +++ b/src/glsl/ir_expression_flattening.cpp @@ -27,7 +27,10 @@ * Takes the leaves of expression trees and makes them dereferences of * assignments of the leaves to temporaries, according to a predicate. * - * This is used for automatic function inlining, where we want to take + * This is used for breaking down matrix operations, where it's easier to + * create a temporary and work on each of its vector components individually. + * + * It is also used for automatic function inlining, where we want to take * an expression containing a call and move the call out to its own * assignment so that we can inline it at the appropriate place in the * instruction stream. |