diff options
| author | Brian Paul <[email protected]> | 2016-09-14 12:16:18 -0600 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2016-09-15 12:00:12 -0600 |
| commit | 0d2eb8c14d8c791603cb60cb56ed468ee49543ad (patch) | |
| tree | b8c63b96bba7e7d8e048bdd1f35c5f523735802c /src/mesa | |
| parent | 533b3530c1292a39ea12437d1376c77bc7e584b9 (diff) | |
mesa: check for no matrix change in _mesa_LoadMatrixf()
Some apps issue redundant glLoadMatrixf() calls with the same matrix.
Try to avoid setting dirty state in that situation.
This reduces the number of constant buffer updates by about half in
ET Quake Wars.
Tested with Piglit, ETQW, Sauerbraten, Google Earth, etc.
Reviewed-by: Charmaine Lee <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/matrix.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/mesa/main/matrix.c b/src/mesa/main/matrix.c index b30b983f14f..83f081e88e5 100644 --- a/src/mesa/main/matrix.c +++ b/src/mesa/main/matrix.c @@ -356,9 +356,11 @@ _mesa_LoadMatrixf( const GLfloat *m ) m[2], m[6], m[10], m[14], m[3], m[7], m[11], m[15]); - FLUSH_VERTICES(ctx, 0); - _math_matrix_loadf( ctx->CurrentStack->Top, m ); - ctx->NewState |= ctx->CurrentStack->DirtyFlag; + if (memcmp(m, ctx->CurrentStack->Top->m, 16 * sizeof(GLfloat)) != 0) { + FLUSH_VERTICES(ctx, 0); + _math_matrix_loadf( ctx->CurrentStack->Top, m ); + ctx->NewState |= ctx->CurrentStack->DirtyFlag; + } } |