nv50,nvc0: clamp uniform size to 64k

The state tracker will pass through requests from buggy applications
which will have the buffer size larger than the max allowed (64k). Clamp
the size to 64k so that we don't get errors when uploading the constbuf
data.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.5 10.6" <mesa-stable@lists.freedesktop.org>

diff --git a/src/gallium/drivers/nouveau/nv50/nv50_state.c b/src/gallium/drivers/nouveau/nv50/nv50_state.c
index 290750459cff88dcbcd2f5775da67a258d4e218d..d4d41af3c614aecd8c23ae5c55a06810dc64599b 100644 (file)
--- a/src/gallium/drivers/nouveau/nv50/nv50_state.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_state.c
@@ -811,12 +811,12 @@ nv50_set_constant_buffer(struct pipe_context *pipe, uint shader, uint index,
    nv50->constbuf[s][i].user = (cb && cb->user_buffer) ? TRUE : FALSE;
    if (nv50->constbuf[s][i].user) {
       nv50->constbuf[s][i].u.data = cb->user_buffer;
-      nv50->constbuf[s][i].size = cb->buffer_size;
+      nv50->constbuf[s][i].size = MIN2(cb->buffer_size, 0x10000);
       nv50->constbuf_valid[s] |= 1 << i;
    } else
    if (res) {
       nv50->constbuf[s][i].offset = cb->buffer_offset;
-      nv50->constbuf[s][i].size = align(cb->buffer_size, 0x100);
+      nv50->constbuf[s][i].size = MIN2(align(cb->buffer_size, 0x100), 0x10000);
       nv50->constbuf_valid[s] |= 1 << i;
    } else {
       nv50->constbuf_valid[s] &= ~(1 << i);

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_state.c b/src/gallium/drivers/nouveau/nvc0/nvc0_state.c
index 63c3c52a5b20daca323b74e03c32de1a961dd901..6b7a211e71bd0ac7c5b9210fcc512ed672f88680 100644 (file)
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_state.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_state.c
@@ -793,12 +793,12 @@ nvc0_set_constant_buffer(struct pipe_context *pipe, uint shader, uint index,
    nvc0->constbuf[s][i].user = (cb && cb->user_buffer) ? TRUE : FALSE;
    if (nvc0->constbuf[s][i].user) {
       nvc0->constbuf[s][i].u.data = cb->user_buffer;
-      nvc0->constbuf[s][i].size = cb->buffer_size;
+      nvc0->constbuf[s][i].size = MIN2(cb->buffer_size, 0x10000);
       nvc0->constbuf_valid[s] |= 1 << i;
    } else
    if (cb) {
       nvc0->constbuf[s][i].offset = cb->buffer_offset;
-      nvc0->constbuf[s][i].size = align(cb->buffer_size, 0x100);
+      nvc0->constbuf[s][i].size = MIN2(align(cb->buffer_size, 0x100), 0x10000);
       nvc0->constbuf_valid[s] |= 1 << i;
    }
    else {