src/gallium/drivers/r300/r300_state_derived.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "r300_state_derived.h"
  24
  25 /* r300_state_derived: Various bits of state which are dependent upon
  26  * currently bound CSO data. */
  27
  28 /* Update the vertex_info struct in our r300_context.
  29  *
  30  * The vertex_info struct describes the post-TCL format of vertices. It is
  31  * required for Draw when doing SW TCL, and also for describing the
  32  * dreaded RS block on R300 chipsets. */
  33 /* XXX this function should be able to handle vert shaders as well as draw */
  34 static void r300_update_vertex_layout(struct r300_context* r300)
  35 {
  36     struct r300_vertex_format vformat;
  37     struct vertex_info vinfo;
  38     boolean pos = FALSE, psize = FALSE, fog = FALSE;
  39     int i, texs = 0, cols = 0;
  40     int tab[16];
  41
  42     struct tgsi_shader_info* info = &r300->fs->info;
  43
  44     memset(&vinfo, 0, sizeof(vinfo));
  45     for (i = 0; i < 16; i++) {
  46         tab[i] = -1;
  47     }
  48
  49     assert(info->num_inputs <= 16);
  50
  51     for (i = 0; i < info->num_inputs; i++) {
  52         switch (info->input_semantic_name[i]) {
  53             case TGSI_SEMANTIC_POSITION:
  54                 pos = TRUE;
  55                 tab[i] = 0;
  56                 break;
  57             case TGSI_SEMANTIC_COLOR:
  58                 tab[i] = 2 + cols++;
  59                 break;
  60             case TGSI_SEMANTIC_FOG:
  61                 fog = TRUE;
  62                 tab[i] = 6 + texs++;
  63                 break;
  64             case TGSI_SEMANTIC_PSIZE:
  65                 psize = TRUE;
  66                 tab[i] = 1;
  67                 break;
  68             case TGSI_SEMANTIC_GENERIC:
  69                 tab[i] = 6 + texs++;
  70                 break;
  71             default:
  72                 debug_printf("r300: Unknown vertex input %d\n",
  73                     info->input_semantic_name[i]);
  74                 break;
  75         }
  76     }
  77
  78     /* Do the actual vertex_info setup.
  79      *
  80      * vertex_info has four uints of hardware-specific data in it.
  81      * vinfo.hwfmt[0] is R300_VAP_VTX_STATE_CNTL
  82      * vinfo.hwfmt[1] is R300_VAP_VSM_VTX_ASSM
  83      * vinfo.hwfmt[2] is R300_VAP_OUTPUT_VTX_FMT_0
  84      * vinfo.hwfmt[3] is R300_VAP_OUTPUT_VTX_FMT_1 */
  85
  86     vinfo.hwfmt[0] = 0x5555; /* XXX this is classic Mesa bonghits */
  87
  88     if (!pos) {
  89         debug_printf("r300: Forcing vertex position attribute emit...\n");
  90         /* Make room for the position attribute
  91          * at the beginning of the tab. */
  92         for (i = 1; i < 16; i++) {
  93             tab[i] = tab[i-1];
  94         }
  95         tab[0] = 0;
  96
  97         draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_POS,
  98             draw_find_vs_output(r300->draw, TGSI_SEMANTIC_POSITION, 0));
  99     } else {
 100         draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_PERSPECTIVE,
 101             draw_find_vs_output(r300->draw, TGSI_SEMANTIC_POSITION, 0));
 102     }
 103     vinfo.hwfmt[1] |= R300_INPUT_CNTL_POS;
 104     vinfo.hwfmt[2] |= R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT;
 105
 106     if (psize) {
 107         draw_emit_vertex_attr(&vinfo, EMIT_1F_PSIZE, INTERP_POS,
 108             draw_find_vs_output(r300->draw, TGSI_SEMANTIC_PSIZE, 0));
 109         vinfo.hwfmt[2] |= R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT;
 110     }
 111
 112     for (i = 0; i < cols; i++) {
 113         draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_LINEAR,
 114             draw_find_vs_output(r300->draw, TGSI_SEMANTIC_COLOR, i));
 115         vinfo.hwfmt[1] |= R300_INPUT_CNTL_COLOR;
 116         vinfo.hwfmt[2] |= (R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << i);
 117     }
 118
 119     for (i = 0; i < texs; i++) {
 120         draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_PERSPECTIVE,
 121             draw_find_vs_output(r300->draw, TGSI_SEMANTIC_GENERIC, i));
 122         vinfo.hwfmt[1] |= (R300_INPUT_CNTL_TC0 << i);
 123         vinfo.hwfmt[3] |= (4 << (3 * i));
 124     }
 125
 126     if (fog) {
 127         i++;
 128         draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_PERSPECTIVE,
 129             draw_find_vs_output(r300->draw, TGSI_SEMANTIC_FOG, 0));
 130         vinfo.hwfmt[1] |= (R300_INPUT_CNTL_TC0 << i);
 131         vinfo.hwfmt[3] |= (4 << (3 * i));
 132     }
 133
 134     draw_compute_vertex_size(&vinfo);
 135
 136     if (memcmp(&r300->vertex_info, &vinfo, sizeof(struct vertex_info))) {
 137         uint32_t temp;
 138         debug_printf("attrib count: %d, fp input count: %d\n",
 139                 vinfo.num_attribs, info->num_inputs);
 140         for (i = 0; i < vinfo.num_attribs; i++) {
 141             debug_printf("attrib: offset %d, interp %d, size %d,"
 142                    " tab %d\n", vinfo.attrib[i].src_index,
 143                    vinfo.attrib[i].interp_mode, vinfo.attrib[i].emit,
 144                    tab[i]);
 145         }
 146
 147         for (i = 0; i < vinfo.num_attribs; i++) {
 148             /* Make sure we have a proper destination for our attribute */
 149             assert(tab[i] != -1);
 150
 151             temp = translate_vertex_data_type(vinfo.attrib[i].emit) |
 152                 (tab[i] << R300_DST_VEC_LOC_SHIFT);
 153             if (i & 1) {
 154                 r300->vertex_info.vap_prog_stream_cntl[i >> 1] &= 0x0000ffff;
 155                 r300->vertex_info.vap_prog_stream_cntl[i >> 1] |= temp << 16;
 156             } else {
 157                 r300->vertex_info.vap_prog_stream_cntl[i >> 1] &= 0xffff0000;
 158                 r300->vertex_info.vap_prog_stream_cntl[i >> 1] |= temp;
 159             }
 160
 161             r300->vertex_info.vap_prog_stream_cntl_ext[i >> 1] |=
 162                 (R300_VAP_SWIZZLE_XYZW << (i & 1 ? 16 : 0));
 163         }
 164         r300->vertex_info.vap_prog_stream_cntl[i >> 1] |= (R300_LAST_VEC <<
 165                 (i & 1 ? 16 : 0));
 166
 167         memcpy(r300->vertex_info.tab, tab, sizeof(tab));
 168         memcpy(&r300->vertex_info, &vinfo, sizeof(struct vertex_info));
 169         r300->dirty_state |= R300_NEW_VERTEX_FORMAT;
 170     }
 171 }
 172
 173 /* Set up the RS block. This is the part of the chipset that actually does
 174  * the rasterization of vertices into fragments. This is also the part of the
 175  * chipset that locks up if any part of it is even slightly wrong. */
 176 static void r300_update_rs_block(struct r300_context* r300)
 177 {
 178     struct r300_rs_block* rs = r300->rs_block;
 179     struct vertex_info* vinfo = &r300->vertex_info.vinfo;
 180     int* tab = r300->vertex_info.tab;
 181     int col_count = 0, fp_offset = 0, i, memory_pos, tex_count = 0;
 182
 183     memset(rs, 0, sizeof(struct r300_rs_block));
 184
 185     if (r300_screen(r300->context.screen)->caps->is_r500) {
 186         for (i = 0; i < vinfo->num_attribs; i++) {
 187             assert(tab[vinfo->attrib[i].src_index] != -1);
 188             memory_pos = tab[vinfo->attrib[i].src_index] * 4;
 189             switch (vinfo->attrib[i].interp_mode) {
 190                 case INTERP_LINEAR:
 191                     rs->ip[col_count] |=
 192                         R500_RS_COL_PTR(memory_pos) |
 193                         R500_RS_COL_FMT(R300_RS_COL_FMT_RGBA);
 194                     col_count++;
 195                     break;
 196                 case INTERP_PERSPECTIVE:
 197                     rs->ip[tex_count] |=
 198                         R500_RS_SEL_S(memory_pos) |
 199                         R500_RS_SEL_T(memory_pos + 1) |
 200                         R500_RS_SEL_R(memory_pos + 2) |
 201                         R500_RS_SEL_Q(memory_pos + 3);
 202                     tex_count++;
 203                     break;
 204                 default:
 205                     break;
 206             }
 207         }
 208
 209         /* Set up at least one texture pointer or RS will not be happy. */
 210         if (tex_count == 0) {
 211             rs->ip[0] |=
 212                 R500_RS_SEL_S(R500_RS_IP_PTR_K0) |
 213                 R500_RS_SEL_T(R500_RS_IP_PTR_K0) |
 214                 R500_RS_SEL_R(R500_RS_IP_PTR_K0) |
 215                 R500_RS_SEL_Q(R500_RS_IP_PTR_K1);
 216         }
 217
 218         for (i = 0; i < tex_count; i++) {
 219             rs->inst[i] |= R500_RS_INST_TEX_ID(i) | R500_RS_INST_TEX_CN_WRITE |
 220                 R500_RS_INST_TEX_ADDR(fp_offset);
 221             fp_offset++;
 222         }
 223
 224         for (i = 0; i < col_count; i++) {
 225             rs->inst[i] |= R500_RS_INST_COL_ID(i) | R500_RS_INST_COL_CN_WRITE |
 226                 R500_RS_INST_COL_ADDR(fp_offset);
 227             fp_offset++;
 228         }
 229
 230         rs->inst_count = MAX2(col_count, tex_count);
 231     } else {
 232         for (i = 0; i < vinfo->num_attribs; i++) {
 233             memory_pos = tab[vinfo->attrib[i].src_index] * 4;
 234             assert(tab[vinfo->attrib[i].src_index] != -1);
 235             switch (vinfo->attrib[i].interp_mode) {
 236                 case INTERP_LINEAR:
 237                     rs->ip[col_count] |=
 238                         R300_RS_COL_PTR(memory_pos) |
 239                         R300_RS_COL_FMT(R300_RS_COL_FMT_RGBA);
 240                     col_count++;
 241                     break;
 242                 case INTERP_PERSPECTIVE:
 243                     rs->ip[tex_count] |=
 244                         R300_RS_TEX_PTR(memory_pos) |
 245                         R300_RS_SEL_S(R300_RS_SEL_C0) |
 246                         R300_RS_SEL_T(R300_RS_SEL_C1) |
 247                         R300_RS_SEL_R(R300_RS_SEL_C2) |
 248                         R300_RS_SEL_Q(R300_RS_SEL_C3);
 249                     tex_count++;
 250                     break;
 251                 default:
 252                     break;
 253             }
 254         }
 255
 256         if (tex_count == 0) {
 257             rs->ip[0] |=
 258                 R300_RS_SEL_S(R300_RS_SEL_K0) |
 259                 R300_RS_SEL_T(R300_RS_SEL_K0) |
 260                 R300_RS_SEL_R(R300_RS_SEL_K0) |
 261                 R300_RS_SEL_Q(R300_RS_SEL_K1);
 262         }
 263
 264         for (i = 0; i < 8; i++)
 265             debug_printf("ip %d: 0x%x\n", i, rs->ip[i]);
 266
 267         for (i = 0; i < tex_count; i++) {
 268             rs->inst[i] |= R300_RS_INST_TEX_ID(i) | R300_RS_INST_TEX_CN_WRITE |
 269                 R300_RS_INST_TEX_ADDR(fp_offset);
 270             fp_offset++;
 271         }
 272
 273         for (i = 0; i < col_count; i++) {
 274             rs->inst[i] |= R300_RS_INST_COL_ID(i) | R300_RS_INST_COL_CN_WRITE |
 275                 R300_RS_INST_COL_ADDR(fp_offset);
 276             fp_offset++;
 277         }
 278
 279         for (i = 0; i < 8; i++)
 280             debug_printf("inst %d: 0x%x\n", i, rs->inst[i]);
 281     }
 282
 283     rs->count = (tex_count * 4) | (col_count << R300_IC_COUNT_SHIFT) |
 284         R300_HIRES_EN;
 285
 286     rs->inst_count = MAX2(MAX2(col_count - 1, tex_count - 1), 0);
 287
 288     debug_printf("count: 0x%x, inst_count: 0x%x\n", rs->count, rs->inst_count);
 289 }
 290
 291 void r300_update_derived_state(struct r300_context* r300)
 292 {
 293     if (r300->dirty_state & R300_NEW_FRAGMENT_SHADER) {
 294         r300_update_vertex_layout(r300);
 295     }
 296
 297     if (r300->dirty_state & R300_NEW_VERTEX_FORMAT) {
 298         r300_update_rs_block(r300);
 299     }
 300 }