[PATCH 1/3] nv50: use correct scissor reg

[Christoph Bumiller]

---
 src/gallium/drivers/nv50/nv50_screen.c         |    4 ++++
 src/gallium/drivers/nv50/nv50_state_validate.c |   21 +++++++++++++++------
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index b4d6530..fd41d88 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -416,6 +416,10 @@ 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, 0x0e00, 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 1edf741..4981b1b 100644
--- a/src/gallium/drivers/nv50/nv50_state_validate.c
+++ b/src/gallium/drivers/nv50/nv50_state_validate.c
@@ -124,12 +124,18 @@ 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);
+	/* set window scissor rectangle to window extents */
 	so_method(so, tesla, 0x0e04, 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, 0x0df8, 2);
 	so_data  (so, 0);
 	so_data  (so, h);
+	/* set screen scissor rectangle */
+	so_method(so, tesla, 0x0ff4, 2);
+	so_data  (so, w << 16);
+	so_data  (so, h << 16);
 
 	so_ref(so, &nv50->state.fb);
 	so_ref(NULL, &so);
@@ -238,13 +244,16 @@ 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, 0x0e04, 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);
+			/* pipe always uses Y_0_TOP for scissor state */
+			unsigned scs_top = nv50->framebuffer.height - s->miny;
+			unsigned scs_btm = nv50->framebuffer.height - s->maxy;
+			so_data(so, (s->maxx << 16) | s->minx);
+			so_data(so, (scs_top << 16) | scs_btm);
 		} 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);
-- 
1.6.3.3


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 filename="0002-nv50-fix-viewport-transform.patch"