xenocara/driver/xf86-video-intel/src/i830_3d.c

/**************************************************************************
 * 
 * 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 "xf86.h"
#include "i830.h"

#include "i830_reg.h"

void I830EmitInvarientState( ScrnInfoPtr pScrn )
{
   I830Ptr pI830 = I830PTR(pScrn);

   BEGIN_BATCH(58);

   OUT_BATCH(_3DSTATE_MAP_CUBE | MAP_UNIT(0));
   OUT_BATCH(_3DSTATE_MAP_CUBE | MAP_UNIT(1));
   OUT_BATCH(_3DSTATE_MAP_CUBE | MAP_UNIT(2));
   OUT_BATCH(_3DSTATE_MAP_CUBE | MAP_UNIT(3));

   OUT_BATCH(_3DSTATE_DFLT_DIFFUSE_CMD);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_DFLT_SPEC_CMD);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_DFLT_Z_CMD);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_FOG_MODE_CMD);
   OUT_BATCH(FOGFUNC_ENABLE |
	     FOG_LINEAR_CONST | 
	     FOGSRC_INDEX_Z | 
	     ENABLE_FOG_DENSITY);
   OUT_BATCH(0);
   OUT_BATCH(0);

   OUT_BATCH(_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_BATCH(_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_BATCH(_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_BATCH(_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_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
   OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(0));
   OUT_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
   OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(1));
   OUT_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
   OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(2));
   OUT_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
   OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(3));

   OUT_BATCH(_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_BATCH(_3DSTATE_SCISSOR_ENABLE_CMD |
	     DISABLE_SCISSOR_RECT);

   OUT_BATCH(_3DSTATE_SCISSOR_RECT_0_CMD);
   OUT_BATCH(0);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_VERTEX_TRANSFORM);
   OUT_BATCH(DISABLE_VIEWPORT_TRANSFORM | DISABLE_PERSPECTIVE_DIVIDE);

   OUT_BATCH(_3DSTATE_W_STATE_CMD);
   OUT_BATCH(MAGIC_W_STATE_DWORD1);
   OUT_BATCH(0x3f800000 /* 1.0 in IEEE float */ );

   OUT_BATCH(_3DSTATE_COLOR_FACTOR_CMD);
   OUT_BATCH(0x80808080);	/* .5 required in alpha for GL_DOT3_RGBA_EXT */

   OUT_BATCH(_3DSTATE_MAP_COORD_SETBIND_CMD);
   OUT_BATCH(TEXBIND_SET3(TEXCOORDSRC_VTXSET_3) |
	     TEXBIND_SET2(TEXCOORDSRC_VTXSET_2) |
	     TEXBIND_SET1(TEXCOORDSRC_VTXSET_1) |
	     TEXBIND_SET0(TEXCOORDSRC_VTXSET_0));

   /* copy from mesa */
   OUT_BATCH(_3DSTATE_INDPT_ALPHA_BLEND_CMD |
	     DISABLE_INDPT_ALPHA_BLEND |
	     ENABLE_ALPHA_BLENDFUNC |
	     ABLENDFUNC_ADD);

   OUT_BATCH(_3DSTATE_FOG_COLOR_CMD |
	     FOG_COLOR_RED(0) |
	     FOG_COLOR_GREEN(0) |
	     FOG_COLOR_BLUE(0));

   OUT_BATCH(_3DSTATE_CONST_BLEND_COLOR_CMD);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_MODES_1_CMD |
	     ENABLE_COLR_BLND_FUNC |
	     BLENDFUNC_ADD |
	     ENABLE_SRC_BLND_FACTOR |
	     SRC_BLND_FACT(BLENDFACTOR_ONE) |
	     ENABLE_DST_BLND_FACTOR |
	     DST_BLND_FACT(BLENDFACTOR_ZERO));
   OUT_BATCH(_3DSTATE_MODES_2_CMD |
	     ENABLE_GLOBAL_DEPTH_BIAS |
	     GLOBAL_DEPTH_BIAS(0) |
	     ENABLE_ALPHA_TEST_FUNC|
	     ALPHA_TEST_FUNC(0) | /* always */
	     ALPHA_REF_VALUE(0));
   OUT_BATCH(_3DSTATE_MODES_3_CMD |
	     ENABLE_DEPTH_TEST_FUNC |
	     DEPTH_TEST_FUNC(0x2) | /* COMPAREFUNC_LESS */
	     ENABLE_ALPHA_SHADE_MODE |
	     ALPHA_SHADE_MODE(SHADE_MODE_LINEAR) |
	     ENABLE_FOG_SHADE_MODE |
	     FOG_SHADE_MODE(SHADE_MODE_LINEAR) |
	     ENABLE_SPEC_SHADE_MODE |
	     SPEC_SHADE_MODE(SHADE_MODE_LINEAR) |
	     ENABLE_COLOR_SHADE_MODE |
	     COLOR_SHADE_MODE(SHADE_MODE_LINEAR) |
	     ENABLE_CULL_MODE | CULLMODE_NONE);

   OUT_BATCH(_3DSTATE_MODES_4_CMD |
	     ENABLE_LOGIC_OP_FUNC |
	     LOGIC_OP_FUNC(LOGICOP_COPY) |
	     ENABLE_STENCIL_TEST_MASK |
	     STENCIL_TEST_MASK(0xff) |
	     ENABLE_STENCIL_WRITE_MASK |
	     STENCIL_WRITE_MASK(0xff));

   OUT_BATCH(_3DSTATE_STENCIL_TEST_CMD |
	     ENABLE_STENCIL_PARMS |
	     STENCIL_FAIL_OP(0) | /* STENCILOP_KEEP */
	     STENCIL_PASS_DEPTH_FAIL_OP(0) | /* STENCILOP_KEEP */
	     STENCIL_PASS_DEPTH_PASS_OP(0) | /* STENCILOP_KEEP */
	     ENABLE_STENCIL_TEST_FUNC |
	     STENCIL_TEST_FUNC(0) | /* COMPAREFUNC_ALWAYS */
	     ENABLE_STENCIL_REF_VALUE |
	     STENCIL_REF_VALUE(0));

   OUT_BATCH(_3DSTATE_MODES_5_CMD |
	     FLUSH_TEXTURE_CACHE |
	     ENABLE_SPRITE_POINT_TEX |
	     SPRITE_POINT_TEX_OFF |
	     ENABLE_FIXED_LINE_WIDTH |
	     FIXED_LINE_WIDTH(0x2) |       /* 1.0 */
	     ENABLE_FIXED_POINT_WIDTH |
	     FIXED_POINT_WIDTH(1));

   OUT_BATCH(_3DSTATE_ENABLES_1_CMD |
	     DISABLE_LOGIC_OP |
	     DISABLE_STENCIL_TEST |
	     DISABLE_DEPTH_BIAS |
	     DISABLE_SPEC_ADD |
	     DISABLE_FOG |
	     DISABLE_ALPHA_TEST |
	     ENABLE_COLOR_BLEND |
	     DISABLE_DEPTH_TEST);
   OUT_BATCH(_3DSTATE_ENABLES_2_CMD |
	     DISABLE_STENCIL_WRITE |
	     ENABLE_TEX_CACHE |
	     DISABLE_DITHER |
	     ENABLE_COLOR_MASK |
	     ENABLE_COLOR_WRITE |
	     DISABLE_DEPTH_WRITE);

   OUT_BATCH(_3DSTATE_STIPPLE);

   /* Set default blend state */
   OUT_BATCH(_3DSTATE_MAP_BLEND_OP_CMD(0) |
	     TEXPIPE_COLOR |
	     ENABLE_TEXOUTPUT_WRT_SEL |
	     TEXOP_OUTPUT_CURRENT |
	     DISABLE_TEX_CNTRL_STAGE |
	     TEXOP_SCALE_1X |
	     TEXOP_MODIFY_PARMS |
	     TEXOP_LAST_STAGE | TEXBLENDOP_ARG1);
   OUT_BATCH(_3DSTATE_MAP_BLEND_OP_CMD(0) |
	     TEXPIPE_ALPHA |
	     ENABLE_TEXOUTPUT_WRT_SEL |
	     TEXOP_OUTPUT_CURRENT |
	     TEXOP_SCALE_1X |
	     TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1);
   OUT_BATCH(_3DSTATE_MAP_BLEND_ARG_CMD(0) |
	     TEXPIPE_COLOR |
	     TEXBLEND_ARG1 |
	     TEXBLENDARG_MODIFY_PARMS |
	     TEXBLENDARG_DIFFUSE);
   OUT_BATCH(_3DSTATE_MAP_BLEND_ARG_CMD(0) |
	     TEXPIPE_ALPHA |
	     TEXBLEND_ARG1 |
	     TEXBLENDARG_MODIFY_PARMS |
	     TEXBLENDARG_DIFFUSE);

   OUT_BATCH(_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 |
	     AA_LINE_DISABLE);

   ADVANCE_BATCH();
}