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Diffstat (limited to 'src/gallium/drivers/nv30/nv30_state_scissor.c')
-rw-r--r--src/gallium/drivers/nv30/nv30_state_scissor.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv30/nv30_state_scissor.c b/src/gallium/drivers/nv30/nv30_state_scissor.c
new file mode 100644
index 0000000000..1db9bc1795
--- /dev/null
+++ b/src/gallium/drivers/nv30/nv30_state_scissor.c
@@ -0,0 +1,35 @@
+#include "nv30_context.h"
+
+static boolean
+nv30_state_scissor_validate(struct nv30_context *nv30)
+{
+ struct pipe_rasterizer_state *rast = &nv30->rasterizer->pipe;
+ struct pipe_scissor_state *s = &nv30->scissor;
+ struct nouveau_stateobj *so;
+
+ if (nv30->state.hw[NV30_STATE_SCISSOR] &&
+ (rast->scissor == 0 && nv30->state.scissor_enabled == 0))
+ return FALSE;
+ nv30->state.scissor_enabled = rast->scissor;
+
+ so = so_new(3, 0);
+ so_method(so, nv30->screen->rankine, NV34TCL_SCISSOR_HORIZ, 2);
+ if (nv30->state.scissor_enabled) {
+ so_data (so, ((s->maxx - s->minx) << 16) | s->minx);
+ so_data (so, ((s->maxy - s->miny) << 16) | s->miny);
+ } else {
+ so_data (so, 4096 << 16);
+ so_data (so, 4096 << 16);
+ }
+
+ so_ref(so, &nv30->state.hw[NV30_STATE_SCISSOR]);
+ return TRUE;
+}
+
+struct nv30_state_entry nv30_state_scissor = {
+ .validate = nv30_state_scissor_validate,
+ .dirty = {
+ .pipe = NV30_NEW_SCISSOR | NV30_NEW_RAST,
+ .hw = NV30_STATE_SCISSOR
+ }
+};