src/gallium/drivers/svga/svga_pipe_vertex.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "pipe/p_defines.h"
  27 #include "util/u_bitmask.h"
  28 #include "util/u_format.h"
  29 #include "util/u_helpers.h"
  30 #include "util/u_inlines.h"
  31 #include "util/u_math.h"
  32 #include "util/u_memory.h"
  33 #include "util/u_transfer.h"
  34 #include "tgsi/tgsi_parse.h"
  35
  36 #include "svga_context.h"
  37 #include "svga_cmd.h"
  38 #include "svga_format.h"
  39 #include "svga_resource_buffer.h"
  40 #include "svga_screen.h"
  41
  42
  43 static void svga_set_vertex_buffers(struct pipe_context *pipe,
  44                                     unsigned start_slot, unsigned count,
  45                                     const struct pipe_vertex_buffer *buffers)
  46 {
  47    struct svga_context *svga = svga_context(pipe);
  48
  49    util_set_vertex_buffers_count(svga->curr.vb,
  50                                  &svga->curr.num_vertex_buffers,
  51                                  buffers, start_slot, count);
  52
  53    svga->dirty |= SVGA_NEW_VBUFFER;
  54 }
  55
  56
  57 static void svga_set_index_buffer(struct pipe_context *pipe,
  58                                   const struct pipe_index_buffer *ib)
  59 {
  60    struct svga_context *svga = svga_context(pipe);
  61
  62    util_set_index_buffer(&svga->curr.ib, ib);
  63 }
  64
  65
  66 /**
  67  * Does the given vertex attrib format need range adjustment in the VS?
  68  * Range adjustment scales and biases values from [0,1] to [-1,1].
  69  * This lets us avoid the swtnl path.
  70  */
  71 static boolean
  72 attrib_needs_range_adjustment(enum pipe_format format)
  73 {
  74    switch (format) {
  75    case PIPE_FORMAT_R8G8B8_SNORM:
  76       return TRUE;
  77    default:
  78       return FALSE;
  79    }
  80 }
  81
  82
  83 /**
  84  * Given a gallium vertex element format, return the corresponding
  85  * SVGA3dDeclType.
  86  */
  87 static SVGA3dDeclType
  88 translate_vertex_format_to_decltype(enum pipe_format format)
  89 {
  90    switch (format) {
  91    case PIPE_FORMAT_R32_FLOAT:            return SVGA3D_DECLTYPE_FLOAT1;
  92    case PIPE_FORMAT_R32G32_FLOAT:         return SVGA3D_DECLTYPE_FLOAT2;
  93    case PIPE_FORMAT_R32G32B32_FLOAT:      return SVGA3D_DECLTYPE_FLOAT3;
  94    case PIPE_FORMAT_R32G32B32A32_FLOAT:   return SVGA3D_DECLTYPE_FLOAT4;
  95    case PIPE_FORMAT_B8G8R8A8_UNORM:       return SVGA3D_DECLTYPE_D3DCOLOR;
  96    case PIPE_FORMAT_R8G8B8A8_USCALED:     return SVGA3D_DECLTYPE_UBYTE4;
  97    case PIPE_FORMAT_R16G16_SSCALED:       return SVGA3D_DECLTYPE_SHORT2;
  98    case PIPE_FORMAT_R16G16B16A16_SSCALED: return SVGA3D_DECLTYPE_SHORT4;
  99    case PIPE_FORMAT_R8G8B8A8_UNORM:       return SVGA3D_DECLTYPE_UBYTE4N;
 100    case PIPE_FORMAT_R16G16_SNORM:         return SVGA3D_DECLTYPE_SHORT2N;
 101    case PIPE_FORMAT_R16G16B16A16_SNORM:   return SVGA3D_DECLTYPE_SHORT4N;
 102    case PIPE_FORMAT_R16G16_UNORM:         return SVGA3D_DECLTYPE_USHORT2N;
 103    case PIPE_FORMAT_R16G16B16A16_UNORM:   return SVGA3D_DECLTYPE_USHORT4N;
 104    case PIPE_FORMAT_R10G10B10X2_USCALED:  return SVGA3D_DECLTYPE_UDEC3;
 105    case PIPE_FORMAT_R10G10B10X2_SNORM:    return SVGA3D_DECLTYPE_DEC3N;
 106    case PIPE_FORMAT_R16G16_FLOAT:         return SVGA3D_DECLTYPE_FLOAT16_2;
 107    case PIPE_FORMAT_R16G16B16A16_FLOAT:   return SVGA3D_DECLTYPE_FLOAT16_4;
 108
 109    /* See attrib_needs_adjustment() and attrib_needs_w_to_1() above */
 110    case PIPE_FORMAT_R8G8B8_SNORM:         return SVGA3D_DECLTYPE_UBYTE4N;
 111
 112    /* See attrib_needs_w_to_1() above */
 113    case PIPE_FORMAT_R16G16B16_SNORM:      return SVGA3D_DECLTYPE_SHORT4N;
 114    case PIPE_FORMAT_R16G16B16_UNORM:      return SVGA3D_DECLTYPE_USHORT4N;
 115    case PIPE_FORMAT_R8G8B8_UNORM:         return SVGA3D_DECLTYPE_UBYTE4N;
 116
 117    default:
 118       /* There are many formats without hardware support.  This case
 119        * will be hit regularly, meaning we'll need swvfetch.
 120        */
 121       return SVGA3D_DECLTYPE_MAX;
 122    }
 123 }
 124
 125
 126 static void
 127 define_input_element_object(struct svga_context *svga,
 128                             struct svga_velems_state *velems)
 129 {
 130    SVGA3dInputElementDesc elements[PIPE_MAX_ATTRIBS];
 131    enum pipe_error ret;
 132    unsigned i;
 133
 134    assert(velems->count <= PIPE_MAX_ATTRIBS);
 135    assert(svga_have_vgpu10(svga));
 136
 137    for (i = 0; i < velems->count; i++) {
 138       const struct pipe_vertex_element *elem = velems->velem + i;
 139       SVGA3dSurfaceFormat svga_format;
 140       unsigned vf_flags;
 141
 142       svga_translate_vertex_format_vgpu10(elem->src_format,
 143                                           &svga_format, &vf_flags);
 144
 145       velems->decl_type[i] =
 146          translate_vertex_format_to_decltype(elem->src_format);
 147       elements[i].inputSlot = elem->vertex_buffer_index;
 148       elements[i].alignedByteOffset = elem->src_offset;
 149       elements[i].format = svga_format;
 150
 151       if (elem->instance_divisor) {
 152          elements[i].inputSlotClass = SVGA3D_INPUT_PER_INSTANCE_DATA;
 153          elements[i].instanceDataStepRate = elem->instance_divisor;
 154       }
 155       else {
 156          elements[i].inputSlotClass = SVGA3D_INPUT_PER_VERTEX_DATA;
 157          elements[i].instanceDataStepRate = 0;
 158       }
 159       elements[i].inputRegister = i;
 160
 161       if (elements[i].format == SVGA3D_FORMAT_INVALID) {
 162          velems->need_swvfetch = TRUE;
 163       }
 164
 165       if (util_format_is_pure_integer(elem->src_format)) {
 166          velems->attrib_is_pure_int |= (1 << i);
 167       }
 168
 169       if (vf_flags & VF_W_TO_1) {
 170          velems->adjust_attrib_w_1 |= (1 << i);
 171       }
 172
 173       if (vf_flags & VF_U_TO_F_CAST) {
 174          velems->adjust_attrib_utof |= (1 << i);
 175       }
 176       else if (vf_flags & VF_I_TO_F_CAST) {
 177          velems->adjust_attrib_itof |= (1 << i);
 178       }
 179
 180       if (vf_flags & VF_BGRA) {
 181          velems->attrib_is_bgra |= (1 << i);
 182       }
 183
 184       if (vf_flags & VF_PUINT_TO_SNORM) {
 185          velems->attrib_puint_to_snorm |= (1 << i);
 186       }
 187       else if (vf_flags & VF_PUINT_TO_USCALED) {
 188          velems->attrib_puint_to_uscaled |= (1 << i);
 189       }
 190       else if (vf_flags & VF_PUINT_TO_SSCALED) {
 191          velems->attrib_puint_to_sscaled |= (1 << i);
 192       }
 193    }
 194
 195    velems->id = util_bitmask_add(svga->input_element_object_id_bm);
 196
 197    ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, velems->count,
 198                                            velems->id, elements);
 199    if (ret != PIPE_OK) {
 200       svga_context_flush(svga, NULL);
 201       ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, velems->count,
 202                                               velems->id, elements);
 203       assert(ret == PIPE_OK);
 204    }
 205 }
 206
 207
 208 /**
 209  * Translate the vertex element types to SVGA3dDeclType and check
 210  * for VS-based vertex attribute adjustments.
 211  */
 212 static void
 213 translate_vertex_decls(struct svga_context *svga,
 214                        struct svga_velems_state *velems)
 215 {
 216    unsigned i;
 217
 218    assert(!svga_have_vgpu10(svga));
 219
 220    for (i = 0; i < velems->count; i++) {
 221       const enum pipe_format f = velems->velem[i].src_format;
 222       SVGA3dSurfaceFormat svga_format;
 223       unsigned vf_flags;
 224
 225       svga_translate_vertex_format_vgpu10(f, &svga_format, &vf_flags);
 226
 227       velems->decl_type[i] = translate_vertex_format_to_decltype(f);
 228       if (velems->decl_type[i] == SVGA3D_DECLTYPE_MAX) {
 229          /* Unsupported format - use software fetch */
 230          velems->need_swvfetch = TRUE;
 231       }
 232
 233       /* Check for VS-based adjustments */
 234       if (attrib_needs_range_adjustment(f)) {
 235          velems->adjust_attrib_range |= (1 << i);
 236       }
 237
 238       if (vf_flags & VF_W_TO_1) {
 239          velems->adjust_attrib_w_1 |= (1 << i);
 240       }
 241    }
 242 }
 243
 244
 245 static void *
 246 svga_create_vertex_elements_state(struct pipe_context *pipe,
 247                                   unsigned count,
 248                                   const struct pipe_vertex_element *attribs)
 249 {
 250    struct svga_context *svga = svga_context(pipe);
 251    struct svga_velems_state *velems;
 252
 253    assert(count <= PIPE_MAX_ATTRIBS);
 254    velems = (struct svga_velems_state *) MALLOC(sizeof(struct svga_velems_state));
 255    if (velems) {
 256       velems->count = count;
 257       memcpy(velems->velem, attribs, sizeof(*attribs) * count);
 258
 259       velems->need_swvfetch = FALSE;
 260       velems->adjust_attrib_range = 0x0;
 261       velems->attrib_is_pure_int = 0x0;
 262       velems->adjust_attrib_w_1 = 0x0;
 263       velems->adjust_attrib_itof = 0x0;
 264       velems->adjust_attrib_utof = 0x0;
 265       velems->attrib_is_bgra = 0x0;
 266       velems->attrib_puint_to_snorm = 0x0;
 267       velems->attrib_puint_to_uscaled = 0x0;
 268       velems->attrib_puint_to_sscaled = 0x0;
 269
 270       if (svga_have_vgpu10(svga)) {
 271          define_input_element_object(svga, velems);
 272       }
 273       else {
 274          translate_vertex_decls(svga, velems);
 275       }
 276    }
 277
 278    svga->hud.num_state_objects++;
 279
 280    return velems;
 281 }
 282
 283
 284 static void
 285 svga_bind_vertex_elements_state(struct pipe_context *pipe, void *state)
 286 {
 287    struct svga_context *svga = svga_context(pipe);
 288    struct svga_velems_state *velems = (struct svga_velems_state *) state;
 289
 290    svga->curr.velems = velems;
 291    svga->dirty |= SVGA_NEW_VELEMENT;
 292 }
 293
 294
 295 static void
 296 svga_delete_vertex_elements_state(struct pipe_context *pipe, void *state)
 297 {
 298    struct svga_context *svga = svga_context(pipe);
 299    struct svga_velems_state *velems = (struct svga_velems_state *) state;
 300
 301    if (svga_have_vgpu10(svga)) {
 302       enum pipe_error ret;
 303
 304       svga_hwtnl_flush_retry(svga);
 305
 306       ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc, velems->id);
 307       if (ret != PIPE_OK) {
 308          svga_context_flush(svga, NULL);
 309          ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc, velems->id);
 310          assert(ret == PIPE_OK);
 311       }
 312
 313       if (velems->id == svga->state.hw_draw.layout_id)
 314          svga->state.hw_draw.layout_id = SVGA3D_INVALID_ID;
 315
 316       util_bitmask_clear(svga->input_element_object_id_bm, velems->id);
 317       velems->id = SVGA3D_INVALID_ID;
 318    }
 319
 320    FREE(velems);
 321    svga->hud.num_state_objects--;
 322 }
 323
 324 void svga_cleanup_vertex_state( struct svga_context *svga )
 325 {
 326    unsigned i;
 327
 328    for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)
 329       pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);
 330 }
 331
 332
 333 void svga_init_vertex_functions( struct svga_context *svga )
 334 {
 335    svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;
 336    svga->pipe.set_index_buffer = svga_set_index_buffer;
 337    svga->pipe.create_vertex_elements_state = svga_create_vertex_elements_state;
 338    svga->pipe.bind_vertex_elements_state = svga_bind_vertex_elements_state;
 339    svga->pipe.delete_vertex_elements_state = svga_delete_vertex_elements_state;
 340 }