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