src/mesa/drivers/dri/r300/r300_emit.c

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /**
  31  * \file
  32  *
  33  * \author Keith Whitwell <keith@tungstengraphics.com>
  34  * \author Maciej Cencora <m.cencora@gmail.com>
  35  */
  36
  37 #include "main/glheader.h"
  38 #include "main/mtypes.h"
  39 #include "main/colormac.h"
  40 #include "main/imports.h"
  41 #include "main/macros.h"
  42
  43 #include "swrast_setup/swrast_setup.h"
  44 #include "tnl/tnl.h"
  45 #include "tnl/t_context.h"
  46
  47 #include "r300_context.h"
  48 #include "r300_emit.h"
  49
  50 GLuint r300VAPInputCntl0(GLcontext * ctx, GLuint InputsRead)
  51 {
  52         /* No idea what this value means. I have seen other values written to
  53          * this register... */
  54         return 0x5555;
  55 }
  56
  57 GLuint r300VAPInputCntl1(GLcontext * ctx, GLuint InputsRead)
  58 {
  59         GLuint i, vic_1 = 0;
  60
  61         if (InputsRead & (1 << VERT_ATTRIB_POS))
  62                 vic_1 |= R300_INPUT_CNTL_POS;
  63
  64         if (InputsRead & (1 << VERT_ATTRIB_NORMAL))
  65                 vic_1 |= R300_INPUT_CNTL_NORMAL;
  66
  67         if (InputsRead & (1 << VERT_ATTRIB_COLOR0))
  68                 vic_1 |= R300_INPUT_CNTL_COLOR;
  69
  70         for (i = 0; i < ctx->Const.MaxTextureUnits; i++)
  71                 if (InputsRead & (1 << (VERT_ATTRIB_TEX0 + i))) {
  72                         vic_1 |= R300_INPUT_CNTL_TC0 << i;
  73                 }
  74
  75         return vic_1;
  76 }
  77
  78 GLuint r300VAPOutputCntl0(GLcontext * ctx, GLuint vp_writes)
  79 {
  80         GLuint ret = 0;
  81
  82         if (vp_writes & (1 << VERT_RESULT_HPOS))
  83                 ret |= R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT;
  84
  85         if (vp_writes & (1 << VERT_RESULT_COL0))
  86                 ret |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT;
  87
  88         if (vp_writes & (1 << VERT_RESULT_COL1))
  89                 ret |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_1_PRESENT;
  90
  91         /* Two sided lighting works only if all 4 colors are written */
  92         if (vp_writes & (1 << VERT_RESULT_BFC0) || vp_writes & (1 << VERT_RESULT_BFC1))
  93                 ret |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT | R300_VAP_OUTPUT_VTX_FMT_0__COLOR_1_PRESENT |
  94                            R300_VAP_OUTPUT_VTX_FMT_0__COLOR_2_PRESENT | R300_VAP_OUTPUT_VTX_FMT_0__COLOR_3_PRESENT;
  95
  96         if (vp_writes & (1 << VERT_RESULT_PSIZ))
  97                 ret |= R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT;
  98
  99         return ret;
 100 }
 101
 102 GLuint r300VAPOutputCntl1(GLcontext * ctx, GLuint vp_writes)
 103 {
 104         GLuint i, ret = 0, first_free_texcoord = 0;
 105
 106         for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 107                 if (vp_writes & (1 << (VERT_RESULT_TEX0 + i))) {
 108                         ret |= (4 << (3 * first_free_texcoord));
 109                         ++first_free_texcoord;
 110                 }
 111         }
 112
 113         if (first_free_texcoord > 8) {
 114                 fprintf(stderr, "\tout of free texcoords\n");
 115                 _mesa_exit(-1);
 116         }
 117
 118         return ret;
 119 }
 120
 121 void r300EmitCacheFlush(r300ContextPtr rmesa)
 122 {
 123         BATCH_LOCALS(&rmesa->radeon);
 124
 125         BEGIN_BATCH_NO_AUTOSTATE(4);
 126         OUT_BATCH_REGVAL(R300_RB3D_DSTCACHE_CTLSTAT,
 127                 R300_RB3D_DSTCACHE_CTLSTAT_DC_FREE_FREE_3D_TAGS |
 128                 R300_RB3D_DSTCACHE_CTLSTAT_DC_FLUSH_FLUSH_DIRTY_3D);
 129         OUT_BATCH_REGVAL(R300_ZB_ZCACHE_CTLSTAT,
 130                 R300_ZB_ZCACHE_CTLSTAT_ZC_FLUSH_FLUSH_AND_FREE |
 131                 R300_ZB_ZCACHE_CTLSTAT_ZC_FREE_FREE);
 132         END_BATCH();
 133         COMMIT_BATCH();
 134 }