Mesa (master): nv50: use correct scissor reg

[Ben Skeggs]

Module: Mesa
Branch: master
Commit: b0341f994feb3ea724bdbbfde5d79ec2c88c34a1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b0341f994feb3ea724bdbbfde5d79ec2c88c34a1

Author: Christoph Bumiller <e0425955 at student.tuwien.ac.at>
Date:   Wed Jul 29 00:35:12 2009 +0200

nv50: use correct scissor reg

---

 src/gallium/drivers/nv50/nv50_screen.c         |    4 ++++
 src/gallium/drivers/nv50/nv50_state_validate.c |   23 ++++++++++++++++-------
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index ce8f906..349619d 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -417,6 +417,10 @@ nv50_screen_create(struct pipe_winsys *ws, struct nouveau_device *dev)
 	so_method(so, screen->tesla, 0x1234, 1);
 	so_data  (so, 1);
 
+	/* activate first scissor rectangle */
+	so_method(so, screen->tesla, NV50TCL_SCISSOR_ENABLE, 1);
+	so_data  (so, 1);
+
 	so_emit(chan, so);
 	so_ref (so, &screen->static_init);
 	so_ref (NULL, &so);
diff --git a/src/gallium/drivers/nv50/nv50_state_validate.c b/src/gallium/drivers/nv50/nv50_state_validate.c
index d313e9d..03aed81 100644
--- a/src/gallium/drivers/nv50/nv50_state_validate.c
+++ b/src/gallium/drivers/nv50/nv50_state_validate.c
@@ -119,12 +119,18 @@ nv50_state_validate_fb(struct nv50_context *nv50)
 	so_method(so, tesla, NV50TCL_VIEWPORT_HORIZ, 2);
 	so_data  (so, w << 16);
 	so_data  (so, h << 16);
-	so_method(so, tesla, 0x0e04, 2);
+	/* set window scissor rectangle to window extents */
+	so_method(so, tesla, NV50TCL_SCISSOR_HORIZ, 2);
 	so_data  (so, w << 16);
 	so_data  (so, h << 16);
-	so_method(so, tesla, 0xdf8, 2);
+	/* set window lower left corner */
+	so_method(so, tesla, NV50TCL_WINDOW_LEFT, 2);
 	so_data  (so, 0);
 	so_data  (so, h);
+	/* set screen scissor rectangle */
+	so_method(so, tesla, NV50TCL_SCREEN_SCISSOR_HORIZ, 2);
+	so_data  (so, w << 16);
+	so_data  (so, h << 16);
 
 	so_ref(so, &nv50->state.fb);
 	so_ref(NULL, &so);
@@ -233,13 +239,16 @@ nv50_state_validate(struct nv50_context *nv50)
 		nv50->state.scissor_enabled = rast->scissor;
 
 		so = so_new(3, 0);
-		so_method(so, tesla, 0x0ff4, 2);
+		so_method(so, tesla, NV50TCL_SCISSOR_HORIZ, 2);
 		if (nv50->state.scissor_enabled) {
-			so_data(so, ((s->maxx - s->minx) << 16) | s->minx);
-			so_data(so, ((s->maxy - s->miny) << 16) | s->miny);
+			/* the hw has y = 0 = bottom here */
+			unsigned top = nv50->framebuffer.height - s->miny;
+			unsigned bottom = nv50->framebuffer.height - s->maxy;
+			so_data(so, (s->maxx << 16) | s->minx);
+			so_data(so, (top << 16) | bottom);
 		} else {
-			so_data(so, (8192 << 16));
-			so_data(so, (8192 << 16));
+			so_data(so, (nv50->framebuffer.width << 16));
+			so_data(so, (nv50->framebuffer.height << 16));
 		}
 		so_ref(so, &nv50->state.scissor);
 		so_ref(NULL, &so);