+ struct nv50_context *nv50 = nv50_context(pipe);
+ struct nouveau_channel *chan = nv50->screen->base.channel;
+ struct nouveau_grobj *tesla = nv50->screen->tesla;
+ struct pipe_framebuffer_state *fb = &nv50->framebuffer;
+ unsigned mode = 0, i;
+ const unsigned dirty = nv50->dirty;
+
+ /* don't need NEW_BLEND, NV50TCL_COLOR_MASK doesn't affect CLEAR_BUFFERS */
+ nv50->dirty &= NV50_NEW_FRAMEBUFFER | NV50_NEW_SCISSOR;
+ if (!nv50_state_validate(nv50, 64))
+ return;
+
+ if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
+ BEGIN_RING(chan, tesla, NV50TCL_CLEAR_COLOR(0), 4);
+ OUT_RING (chan, fui(rgba[0]));
+ OUT_RING (chan, fui(rgba[1]));
+ OUT_RING (chan, fui(rgba[2]));
+ OUT_RING (chan, fui(rgba[3]));
+ mode |= 0x3c;
+ }
+
+ if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
+ BEGIN_RING(chan, tesla, NV50TCL_CLEAR_DEPTH, 1);
+ OUT_RING (chan, fui(depth));
+ BEGIN_RING(chan, tesla, NV50TCL_CLEAR_STENCIL, 1);
+ OUT_RING (chan, stencil & 0xff);
+
+ mode |= 0x03;
+ }
+
+ BEGIN_RING(chan, tesla, NV50TCL_CLEAR_BUFFERS, 1);
+ OUT_RING (chan, mode);
+
+ for (i = 1; i < fb->nr_cbufs; i++) {
+ BEGIN_RING(chan, tesla, NV50TCL_CLEAR_BUFFERS, 1);
+ OUT_RING (chan, (i << 6) | 0x3c);
+ }
+ nv50->dirty = dirty;