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authorKenneth Graunke <[email protected]>2013-03-04 11:37:35 -0800
committerKenneth Graunke <[email protected]>2013-03-06 08:27:47 -0800
commit89e5c8e0fa0f7ec6e1dc0d1ee269c164fd1cf3b0 (patch)
tree085120fe0b4d2ed7d8ed350b1f8d1e7ac990f5f4 /src/mesa/drivers
parent886c5085e3f78affa524bf12ca406a617219cd68 (diff)
i965: Fix off-by-one in query object result gathering.
If we've written N pairs of values to the buffer, then last_index = N, but the values are 0 .. N-1. Thus, we need to use <, not <=. This worked anyway because we fill the buffer with zeroes, so we just added an extra (0 - 0) to our results. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
Diffstat (limited to 'src/mesa/drivers')
-rw-r--r--src/mesa/drivers/dri/i965/brw_queryobj.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_queryobj.c b/src/mesa/drivers/dri/i965/brw_queryobj.c
index de3be83c8d7..a45435eaf9c 100644
--- a/src/mesa/drivers/dri/i965/brw_queryobj.c
+++ b/src/mesa/drivers/dri/i965/brw_queryobj.c
@@ -208,7 +208,7 @@ brw_queryobj_get_results(struct gl_context *ctx,
* run out of space in the query's BO and allocated a new one. If so,
* this function was already called to accumulate the results so far.
*/
- for (i = 0; i <= query->last_index; i++) {
+ for (i = 0; i < query->last_index; i++) {
query->Base.Result += results[i * 2 + 1] - results[i * 2];
}
break;
@@ -218,7 +218,7 @@ brw_queryobj_get_results(struct gl_context *ctx,
/* If the starting and ending PS_DEPTH_COUNT from any of the batches
* differ, then some fragments passed the depth test.
*/
- for (i = 0; i <= query->last_index; i++) {
+ for (i = 0; i < query->last_index; i++) {
if (results[i * 2 + 1] != results[i * 2]) {
query->Base.Result = GL_TRUE;
break;