Set some invarient state, cures some problems with

rotation at startup.

This mimicks the 3D drivers setup.

1 files changed, 131 insertions, 0 deletions

diff --git a/src/i830_3d.c b/src/i830_3d.c
new file mode 100644
index 00000000..547e5564
--- /dev/null
+++ b/src/i830_3d.c
@@ -0,0 +1,131 @@
+/**************************************************************************
+ * 
+ * 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 "i830_reg.h"
+
+#define CMD_3D (0x3<<29)
+
+void I830EmitInvarientState( ScrnInfoPtr pScrn )
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+
+   BEGIN_LP_RING(38);
+
+   OUT_RING(_3DSTATE_MAP_CUBE | MAP_UNIT(0));
+   OUT_RING(_3DSTATE_MAP_CUBE | MAP_UNIT(1));
+   OUT_RING(_3DSTATE_MAP_CUBE | MAP_UNIT(2));
+   OUT_RING(_3DSTATE_MAP_CUBE | MAP_UNIT(3));
+
+   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);
+
+   OUT_RING(_3DSTATE_FOG_MODE_CMD);
+   OUT_RING(FOGFUNC_ENABLE |
+	     FOG_LINEAR_CONST | 
+	     FOGSRC_INDEX_Z | 
+	     ENABLE_FOG_DENSITY);
+   OUT_RING(0);
+   OUT_RING(0);
+
+
+   OUT_RING(_3DSTATE_MAP_TEX_STREAM_CMD |
+	     MAP_UNIT(0) |
+	     DISABLE_TEX_STREAM_BUMP |
+	     ENABLE_TEX_STREAM_COORD_SET |
+	     TEX_STREAM_COORD_SET(0) |
+	     ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(0));
+   OUT_RING(_3DSTATE_MAP_TEX_STREAM_CMD |
+	     MAP_UNIT(1) |
+	     DISABLE_TEX_STREAM_BUMP |
+	     ENABLE_TEX_STREAM_COORD_SET |
+	     TEX_STREAM_COORD_SET(1) |
+	     ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(1));
+   OUT_RING(_3DSTATE_MAP_TEX_STREAM_CMD |
+	     MAP_UNIT(2) |
+	     DISABLE_TEX_STREAM_BUMP |
+	     ENABLE_TEX_STREAM_COORD_SET |
+	     TEX_STREAM_COORD_SET(2) |
+	     ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(2));
+   OUT_RING(_3DSTATE_MAP_TEX_STREAM_CMD |
+	     MAP_UNIT(3) |
+	     DISABLE_TEX_STREAM_BUMP |
+	     ENABLE_TEX_STREAM_COORD_SET |
+	     TEX_STREAM_COORD_SET(3) |
+	     ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(3));
+
+   OUT_RING(_3DSTATE_MAP_COORD_TRANSFORM);
+   OUT_RING(DISABLE_TEX_TRANSFORM | TEXTURE_SET(0));
+   OUT_RING(_3DSTATE_MAP_COORD_TRANSFORM);
+   OUT_RING(DISABLE_TEX_TRANSFORM | TEXTURE_SET(1));
+   OUT_RING(_3DSTATE_MAP_COORD_TRANSFORM);
+   OUT_RING(DISABLE_TEX_TRANSFORM | TEXTURE_SET(2));
+   OUT_RING(_3DSTATE_MAP_COORD_TRANSFORM);
+   OUT_RING(DISABLE_TEX_TRANSFORM | TEXTURE_SET(3));
+
+   OUT_RING(_3DSTATE_RASTER_RULES_CMD |
+	     ENABLE_POINT_RASTER_RULE |
+	     OGL_POINT_RASTER_RULE |
+	     ENABLE_LINE_STRIP_PROVOKE_VRTX |
+	     ENABLE_TRI_FAN_PROVOKE_VRTX |
+	     ENABLE_TRI_STRIP_PROVOKE_VRTX |
+	     LINE_STRIP_PROVOKE_VRTX(1) |
+	     TRI_FAN_PROVOKE_VRTX(2) | 
+	     TRI_STRIP_PROVOKE_VRTX(2));
+
+   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_VERTEX_TRANSFORM);
+   OUT_RING(DISABLE_VIEWPORT_TRANSFORM | DISABLE_PERSPECTIVE_DIVIDE);
+
+   OUT_RING(_3DSTATE_W_STATE_CMD);
+   OUT_RING(MAGIC_W_STATE_DWORD1);
+   OUT_RING(0x3f800000 /* 1.0 in IEEE float */ );
+
+
+   OUT_RING(_3DSTATE_COLOR_FACTOR_CMD);
+   OUT_RING(0x80808080);	/* .5 required in alpha for GL_DOT3_RGBA_EXT */
+
+   ADVANCE_LP_RING();
+}