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
  44 svga_set_vertex_buffers(struct pipe_context *pipe,
  45                         unsigned start_slot, unsigned count,
  46                         const struct pipe_vertex_buffer *buffers)
  47 {
  48    struct svga_context *svga = svga_context(pipe);
  49
  50    util_set_vertex_buffers_count(svga->curr.vb,
  51                                  &svga->curr.num_vertex_buffers,
  52                                  buffers, start_slot, count);
  53
  54    svga->dirty |= SVGA_NEW_VBUFFER;
  55 }
  56
  57
  58 /**
  59  * Does the given vertex attrib format need range adjustment in the VS?
  60  * Range adjustment scales and biases values from [0,1] to [-1,1].
  61  * This lets us avoid the swtnl path.
  62  */
  63 static boolean
  64 attrib_needs_range_adjustment(enum pipe_format format)
  65 {
  66    switch (format) {
  67    case PIPE_FORMAT_R8G8B8_SNORM:
  68       return TRUE;
  69    default:
  70       return FALSE;
  71    }
  72 }
  73
  74
  75 /**
  76  * Given a gallium vertex element format, return the corresponding
  77  * SVGA3dDeclType.
  78  */
  79 static SVGA3dDeclType
  80 translate_vertex_format_to_decltype(enum pipe_format format)
  81 {
  82    switch (format) {
  83    case PIPE_FORMAT_R32_FLOAT:            return SVGA3D_DECLTYPE_FLOAT1;
  84    case PIPE_FORMAT_R32G32_FLOAT:         return SVGA3D_DECLTYPE_FLOAT2;
  85    case PIPE_FORMAT_R32G32B32_FLOAT:      return SVGA3D_DECLTYPE_FLOAT3;
  86    case PIPE_FORMAT_R32G32B32A32_FLOAT:   return SVGA3D_DECLTYPE_FLOAT4;
  87    case PIPE_FORMAT_B8G8R8A8_UNORM:       return SVGA3D_DECLTYPE_D3DCOLOR;
  88    case PIPE_FORMAT_R8G8B8A8_USCALED:     return SVGA3D_DECLTYPE_UBYTE4;
  89    case PIPE_FORMAT_R16G16_SSCALED:       return SVGA3D_DECLTYPE_SHORT2;
  90    case PIPE_FORMAT_R16G16B16A16_SSCALED: return SVGA3D_DECLTYPE_SHORT4;
  91    case PIPE_FORMAT_R8G8B8A8_UNORM:       return SVGA3D_DECLTYPE_UBYTE4N;
  92    case PIPE_FORMAT_R16G16_SNORM:         return SVGA3D_DECLTYPE_SHORT2N;
  93    case PIPE_FORMAT_R16G16B16A16_SNORM:   return SVGA3D_DECLTYPE_SHORT4N;
  94    case PIPE_FORMAT_R16G16_UNORM:         return SVGA3D_DECLTYPE_USHORT2N;
  95    case PIPE_FORMAT_R16G16B16A16_UNORM:   return SVGA3D_DECLTYPE_USHORT4N;
  96    case PIPE_FORMAT_R10G10B10X2_USCALED:  return SVGA3D_DECLTYPE_UDEC3;
  97    case PIPE_FORMAT_R10G10B10X2_SNORM:    return SVGA3D_DECLTYPE_DEC3N;
  98    case PIPE_FORMAT_R16G16_FLOAT:         return SVGA3D_DECLTYPE_FLOAT16_2;
  99    case PIPE_FORMAT_R16G16B16A16_FLOAT:   return SVGA3D_DECLTYPE_FLOAT16_4;
 100
 101    /* See attrib_needs_adjustment() and attrib_needs_w_to_1() above */
 102    case PIPE_FORMAT_R8G8B8_SNORM:         return SVGA3D_DECLTYPE_UBYTE4N;
 103
 104    /* See attrib_needs_w_to_1() above */
 105    case PIPE_FORMAT_R16G16B16_SNORM:      return SVGA3D_DECLTYPE_SHORT4N;
 106    case PIPE_FORMAT_R16G16B16_UNORM:      return SVGA3D_DECLTYPE_USHORT4N;
 107    case PIPE_FORMAT_R8G8B8_UNORM:         return SVGA3D_DECLTYPE_UBYTE4N;
 108
 109    default:
 110       /* There are many formats without hardware support.  This case
 111        * will be hit regularly, meaning we'll need swvfetch.
 112        */
 113       return SVGA3D_DECLTYPE_MAX;
 114    }
 115 }
 116
 117
 118 static void
 119 define_input_element_object(struct svga_context *svga,
 120                             struct svga_velems_state *velems)
 121 {
 122    SVGA3dInputElementDesc elements[PIPE_MAX_ATTRIBS];
 123    enum pipe_error ret;
 124    unsigned i;
 125
 126    assert(velems->count <= PIPE_MAX_ATTRIBS);
 127    assert(svga_have_vgpu10(svga));
 128
 129    for (i = 0; i < velems->count; i++) {
 130       const struct pipe_vertex_element *elem = velems->velem + i;
 131       SVGA3dSurfaceFormat svga_format;
 132       unsigned vf_flags;
 133
 134       svga_translate_vertex_format_vgpu10(elem->src_format,
 135                                           &svga_format, &vf_flags);
 136
 137       velems->decl_type[i] =
 138          translate_vertex_format_to_decltype(elem->src_format);
 139       elements[i].inputSlot = elem->vertex_buffer_index;
 140       elements[i].alignedByteOffset = elem->src_offset;
 141       elements[i].format = svga_format;
 142
 143       if (elem->instance_divisor) {
 144          elements[i].inputSlotClass = SVGA3D_INPUT_PER_INSTANCE_DATA;
 145          elements[i].instanceDataStepRate = elem->instance_divisor;
 146       }
 147       else {
 148          elements[i].inputSlotClass = SVGA3D_INPUT_PER_VERTEX_DATA;
 149          elements[i].instanceDataStepRate = 0;
 150       }
 151       elements[i].inputRegister = i;
 152
 153       if (elements[i].format == SVGA3D_FORMAT_INVALID) {
 154          velems->need_swvfetch = TRUE;
 155       }
 156
 157       if (util_format_is_pure_integer(elem->src_format)) {
 158          velems->attrib_is_pure_int |= (1 << i);
 159       }
 160
 161       if (vf_flags & VF_W_TO_1) {
 162          velems->adjust_attrib_w_1 |= (1 << i);
 163       }
 164
 165       if (vf_flags & VF_U_TO_F_CAST) {
 166          velems->adjust_attrib_utof |= (1 << i);
 167       }
 168       else if (vf_flags & VF_I_TO_F_CAST) {
 169          velems->adjust_attrib_itof |= (1 << i);
 170       }
 171
 172       if (vf_flags & VF_BGRA) {
 173          velems->attrib_is_bgra |= (1 << i);
 174       }
 175
 176       if (vf_flags & VF_PUINT_TO_SNORM) {
 177          velems->attrib_puint_to_snorm |= (1 << i);
 178       }
 179       else if (vf_flags & VF_PUINT_TO_USCALED) {
 180          velems->attrib_puint_to_uscaled |= (1 << i);
 181       }
 182       else if (vf_flags & VF_PUINT_TO_SSCALED) {
 183          velems->attrib_puint_to_sscaled |= (1 << i);
 184       }
 185    }
 186
 187    velems->id = util_bitmask_add(svga->input_element_object_id_bm);
 188
 189    ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, velems->count,
 190                                            velems->id, elements);
 191    if (ret != PIPE_OK) {
 192       svga_context_flush(svga, NULL);
 193       ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, velems->count,
 194                                               velems->id, elements);
 195       assert(ret == PIPE_OK);
 196    }
 197 }
 198
 199
 200 /**
 201  * Translate the vertex element types to SVGA3dDeclType and check
 202  * for VS-based vertex attribute adjustments.
 203  */
 204 static void
 205 translate_vertex_decls(struct svga_context *svga,
 206                        struct svga_velems_state *velems)
 207 {
 208    unsigned i;
 209
 210    assert(!svga_have_vgpu10(svga));
 211
 212    for (i = 0; i < velems->count; i++) {
 213       const enum pipe_format f = velems->velem[i].src_format;
 214       SVGA3dSurfaceFormat svga_format;
 215       unsigned vf_flags;
 216
 217       svga_translate_vertex_format_vgpu10(f, &svga_format, &vf_flags);
 218
 219       velems->decl_type[i] = translate_vertex_format_to_decltype(f);
 220       if (velems->decl_type[i] == SVGA3D_DECLTYPE_MAX) {
 221          /* Unsupported format - use software fetch */
 222          velems->need_swvfetch = TRUE;
 223       }
 224
 225       /* Check for VS-based adjustments */
 226       if (attrib_needs_range_adjustment(f)) {
 227          velems->adjust_attrib_range |= (1 << i);
 228       }
 229
 230       if (vf_flags & VF_W_TO_1) {
 231          velems->adjust_attrib_w_1 |= (1 << i);
 232       }
 233    }
 234 }
 235
 236
 237 static void *
 238 svga_create_vertex_elements_state(struct pipe_context *pipe,
 239                                   unsigned count,
 240                                   const struct pipe_vertex_element *attribs)
 241 {
 242    struct svga_context *svga = svga_context(pipe);
 243    struct svga_velems_state *velems;
 244
 245    assert(count <= PIPE_MAX_ATTRIBS);
 246    velems = (struct svga_velems_state *) MALLOC(sizeof(struct svga_velems_state));
 247    if (velems) {
 248       velems->count = count;
 249       memcpy(velems->velem, attribs, sizeof(*attribs) * count);
 250
 251       velems->need_swvfetch = FALSE;
 252       velems->adjust_attrib_range = 0x0;
 253       velems->attrib_is_pure_int = 0x0;
 254       velems->adjust_attrib_w_1 = 0x0;
 255       velems->adjust_attrib_itof = 0x0;
 256       velems->adjust_attrib_utof = 0x0;
 257       velems->attrib_is_bgra = 0x0;
 258       velems->attrib_puint_to_snorm = 0x0;
 259       velems->attrib_puint_to_uscaled = 0x0;
 260       velems->attrib_puint_to_sscaled = 0x0;
 261
 262       if (svga_have_vgpu10(svga)) {
 263          define_input_element_object(svga, velems);
 264       }
 265       else {
 266          translate_vertex_decls(svga, velems);
 267       }
 268    }
 269
 270    svga->hud.num_vertexelement_objects++;
 271    SVGA_STATS_COUNT_INC(svga_screen(svga->pipe.screen)->sws,
 272                         SVGA_STATS_COUNT_VERTEXELEMENT);
 273
 274    return velems;
 275 }
 276
 277
 278 static void
 279 svga_bind_vertex_elements_state(struct pipe_context *pipe, void *state)
 280 {
 281    struct svga_context *svga = svga_context(pipe);
 282    struct svga_velems_state *velems = (struct svga_velems_state *) state;
 283
 284    svga->curr.velems = velems;
 285    svga->dirty |= SVGA_NEW_VELEMENT;
 286 }
 287
 288
 289 static void
 290 svga_delete_vertex_elements_state(struct pipe_context *pipe, void *state)
 291 {
 292    struct svga_context *svga = svga_context(pipe);
 293    struct svga_velems_state *velems = (struct svga_velems_state *) state;
 294
 295    if (svga_have_vgpu10(svga)) {
 296       enum pipe_error ret;
 297
 298       svga_hwtnl_flush_retry(svga);
 299
 300       ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc, velems->id);
 301       if (ret != PIPE_OK) {
 302          svga_context_flush(svga, NULL);
 303          ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc, velems->id);
 304          assert(ret == PIPE_OK);
 305       }
 306
 307       if (velems->id == svga->state.hw_draw.layout_id)
 308          svga->state.hw_draw.layout_id = SVGA3D_INVALID_ID;
 309
 310       util_bitmask_clear(svga->input_element_object_id_bm, velems->id);
 311       velems->id = SVGA3D_INVALID_ID;
 312    }
 313
 314    FREE(velems);
 315    svga->hud.num_vertexelement_objects--;
 316 }
 317
 318
 319 void
 320 svga_cleanup_vertex_state(struct svga_context *svga)
 321 {
 322    unsigned i;
 323
 324    for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)
 325       pipe_vertex_buffer_unreference(&svga->curr.vb[i]);
 326
 327    pipe_resource_reference(&svga->state.hw_draw.ib, NULL);
 328
 329    for (i = 0; i < svga->state.hw_draw.num_vbuffers; i++)
 330       pipe_resource_reference(&svga->state.hw_draw.vbuffers[i], NULL);
 331 }
 332
 333
 334 void
 335 svga_init_vertex_functions(struct svga_context *svga)
 336 {
 337    svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;
 338    svga->pipe.create_vertex_elements_state = svga_create_vertex_elements_state;
 339    svga->pipe.bind_vertex_elements_state = svga_bind_vertex_elements_state;
 340    svga->pipe.delete_vertex_elements_state = svga_delete_vertex_elements_state;
 341 }