Set some invarient state, cures some problems with

rotation at startup.

This mimicks the 3D drivers setup.

1 files changed, 107 insertions, 0 deletions

diff --git a/src/i915_3d.c b/src/i915_3d.c
new file mode 100644
index 00000000..f6e72196
--- /dev/null
+++ b/src/i915_3d.c
@@ -0,0 +1,107 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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.
+ * 
+ **************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "i830.h"
+#include "i830_dri.h"
+
+#include "i915_reg.h"
+
+void I915EmitInvarientState( ScrnInfoPtr pScrn )
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+
+   BEGIN_LP_RING(20);
+
+   OUT_RING(_3DSTATE_AA_CMD |
+	     AA_LINE_ECAAR_WIDTH_ENABLE |
+	     AA_LINE_ECAAR_WIDTH_1_0 |
+	     AA_LINE_REGION_WIDTH_ENABLE |
+	     AA_LINE_REGION_WIDTH_1_0);
+
+   OUT_RING(_3DSTATE_DFLT_DIFFUSE_CMD);
+   OUT_RING(0);
+
+   OUT_RING(_3DSTATE_DFLT_SPEC_CMD);
+   OUT_RING(0);
+
+   OUT_RING(_3DSTATE_DFLT_Z_CMD);
+   OUT_RING(0);
+
+   /* Don't support texture crossbar yet */
+   OUT_RING(_3DSTATE_COORD_SET_BINDINGS |
+	     CSB_TCB(0, 0) |
+	     CSB_TCB(1, 1) |
+	     CSB_TCB(2, 2) |
+	     CSB_TCB(3, 3) |
+	     CSB_TCB(4, 4) |
+	     CSB_TCB(5, 5) |
+	     CSB_TCB(6, 6) |
+	     CSB_TCB(7, 7));
+
+   OUT_RING(_3DSTATE_RASTER_RULES_CMD |
+	     ENABLE_POINT_RASTER_RULE |
+	     OGL_POINT_RASTER_RULE |
+	     ENABLE_LINE_STRIP_PROVOKE_VRTX |
+	     ENABLE_TRI_FAN_PROVOKE_VRTX |
+	     LINE_STRIP_PROVOKE_VRTX(1) |
+	     TRI_FAN_PROVOKE_VRTX(2) | 
+	     ENABLE_TEXKILL_3D_4D |
+	     TEXKILL_4D);
+
+   /* Need to initialize this to zero.
+    */
+   OUT_RING(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | 
+	     I1_LOAD_S(3) |
+	     (1));
+   OUT_RING(0);
+ 
+   /* XXX: Use this */
+   OUT_RING(_3DSTATE_SCISSOR_ENABLE_CMD | 
+	     DISABLE_SCISSOR_RECT);
+
+   OUT_RING(_3DSTATE_SCISSOR_RECT_0_CMD);
+   OUT_RING(0);
+   OUT_RING(0);
+
+   OUT_RING(_3DSTATE_DEPTH_SUBRECT_DISABLE);
+
+   OUT_RING(_3DSTATE_LOAD_INDIRECT | 0); /* disable indirect state */
+   OUT_RING(0);
+
+   /* Don't support twosided stencil yet */
+   OUT_RING(_3DSTATE_BACKFACE_STENCIL_OPS |
+	     BFO_ENABLE_STENCIL_TWO_SIDE |
+	     0 );
+
+   OUT_RING(0);
+   
+   ADVANCE_LP_RING();
+}