r300-gallium: Split off invariant state.

It's kind of like a CSO todo list. :3

1 files changed, 54 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_state_invariant.c b/src/gallium/drivers/r300/r300_state_invariant.c
new file mode 100644
index 0000000000..7fd7aefeb7
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_state_invariant.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2009 Joakim Sindholt <opensource@zhasha.com>
+ *                Corbin Simpson <MostAwesomeDude@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE. */
+
+#include "r300_state_invariant.h"
+
+/* Calculate and emit invariant state. This is data that the 3D engine
+ * will probably want at the beginning of every CS, but it's not currently
+ * handled by any CSO setup, and in addition it doesn't really change much.
+ *
+ * Note that eventually this should be empty, but it's useful for development
+ * and general unduplication of code. */
+void r300_emit_invariant_state(struct r300_context* r300)
+{
+    struct r300_capabilities* caps = r300_screen(r300->context.screen)->caps;
+    CS_LOCALS(r300);
+
+    BEGIN_CS(14);
+    /* Amount of time to wait for vertex fetches in PVS */
+    OUT_CS_REG(VAP_PVS_VTX_TIMEOUT_REG, 0xffff);
+    /* Various GB enables */
+    OUT_CS_REG(R300_GB_ENABLE, R300_GB_POINT_STUFF_ENABLE |
+        R300_GB_LINE_STUFF_ENABLE | R300_GB_TRIANGLE_STUFF_ENABLE);
+    /* Subpixel multisampling for AA */
+    OUT_CS_REG(R300_GB_MSPOS0, 0x66666666);
+    OUT_CS_REG(R300_GB_MSPOS1, 0x66666666);
+    /* GB tile config and pipe setup */
+    OUT_CS_REG(R300_GB_TILE_CONFIG, R300_GB_TILE_DISABLE |
+        r300_translate_gb_pipes(caps->num_frag_pipes));
+    /* Source of fog depth */
+    OUT_CS_REG(R300_GB_SELECT, R300_GB_FOG_SELECT_1_1_W);
+    /* AA enable */
+    OUT_CS_REG(R300_GB_AA_CONFIG, 0x0);
+    END_CS;
+}