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r600g,radeonsi: skip unnecessary buffer_is_busy call, add a comment

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This commit is contained in:
Marek Olšák
2014-02-01 15:06:39 +01:00
parent 08f0344cf3
commit 07075cf350
1 changed files with 5 additions and 1 deletions
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src/gallium/drivers/radeon/r600_buffer_common.c
+5 -1
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@@ -49,6 +49,7 @@ void *r600_buffer_map_sync_with_rings(struct r600_common_context *ctx,
unsigned usage)
{
enum radeon_bo_usage rusage = RADEON_USAGE_READWRITE;
bool busy = false;
if (usage & PIPE_TRANSFER_UNSYNCHRONIZED) {
return ctx->ws->buffer_map(resource->cs_buf, NULL, usage);
@@ -67,6 +68,7 @@ void *r600_buffer_map_sync_with_rings(struct r600_common_context *ctx,
return NULL;
} else {
ctx->rings.gfx.flush(ctx, 0);
busy = true;
}
}
if (ctx->rings.dma.cs &&
@@ -78,10 +80,11 @@ void *r600_buffer_map_sync_with_rings(struct r600_common_context *ctx,
return NULL;
} else {
ctx->rings.dma.flush(ctx, 0);
busy = true;
}
}
if (ctx->ws->buffer_is_busy(resource->buf, rusage)) {
if (busy || ctx->ws->buffer_is_busy(resource->buf, rusage)) {
if (usage & PIPE_TRANSFER_DONTBLOCK) {
return NULL;
} else {
@@ -93,6 +96,7 @@ void *r600_buffer_map_sync_with_rings(struct r600_common_context *ctx,
}
}
/* Setting the CS to NULL will prevent doing checks we have done already. */
return ctx->ws->buffer_map(resource->cs_buf, NULL, usage);
}