diff options
| author | Brian Paul <brianp@vmware.com> | 2010-09-20 15:33:49 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2010-09-20 15:33:49 -0600 |
| commit | 1662c317032cf280701d7e55b028b7f0dc8afc65 (patch) | |
| tree | dec29f5719db084b180a753ddcb9f2b23031f84e | |
| parent | a7ea4d11fb5a2a39daaad8752706291ac93013f7 (diff) | |
llvmpipe: check bitshift against PIPE_MAX_SHADER_OUTPUTS
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_setup_point.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_point.c b/src/gallium/drivers/llvmpipe/lp_setup_point.c index bb6b88069b..774a3c80da 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup_point.c +++ b/src/gallium/drivers/llvmpipe/lp_setup_point.c @@ -188,8 +188,11 @@ setup_point_coefficients( struct lp_setup_context *setup, */ if (shader->info.input_semantic_name[slot] == TGSI_SEMANTIC_GENERIC) { const int index = shader->info.input_semantic_index[slot]; - - if (setup->sprite_coord_enable & (1 << index)) { + /* Note that sprite_coord enable is a bitfield of + * PIPE_MAX_SHADER_OUTPUTS bits. + */ + if (index < PIPE_MAX_SHADER_OUTPUTS && + (setup->sprite_coord_enable & (1 << index))) { for (i = 0; i < NUM_CHANNELS; i++) if (usage_mask & (1 << i)) perspective_coef(setup, point, info, slot+1, vert_attr, i, |