radeonsi: always unmap texture CPU mappings on 32-bit CPU architectures

Team Fortress 2 32-bit version runs out of the CPU address space.

Tested-by: Dieter Nützel <[email protected]>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeonsi/si_texture.c b/src/gallium/drivers/radeonsi/si_texture.c
index 9df12e0f5bd..c169d4e443d 100644
--- a/src/gallium/drivers/radeonsi/si_texture.c
+++ b/src/gallium/drivers/radeonsi/si_texture.c
@@ -1798,6 +1798,12 @@ static void *si_texture_transfer_map(struct pipe_context *ctx,
 		buf = &tex->buffer;
 	}
 
+	/* Always unmap texture CPU mappings on 32-bit architectures, so that
+	 * we don't run out of the CPU address space.
+	 */
+	if (sizeof(void*) == 4)
+		usage |= RADEON_TRANSFER_TEMPORARY;
+
 	if (!(map = si_buffer_map_sync_with_rings(sctx, buf, usage)))
 		goto fail_trans;
 
@@ -1819,6 +1825,16 @@ static void si_texture_transfer_unmap(struct pipe_context *ctx,
 	struct pipe_resource *texture = transfer->resource;
 	struct si_texture *tex = (struct si_texture*)texture;
 
+	/* Always unmap texture CPU mappings on 32-bit architectures, so that
+	 * we don't run out of the CPU address space.
+	 */
+	if (sizeof(void*) == 4) {
+		struct r600_resource *buf =
+			stransfer->staging ? stransfer->staging : &tex->buffer;
+
+		sctx->ws->buffer_unmap(buf->buf);
+	}
+
 	if ((transfer->usage & PIPE_TRANSFER_WRITE) && stransfer->staging) {
 		if (tex->is_depth && tex->buffer.b.b.nr_samples <= 1) {
 			ctx->resource_copy_region(ctx, texture, transfer->level,