src/gallium/drivers/i965/brw_pipe_vertex.c

   1 #include "brw_context.h"
   2 #include "brw_defines.h"
   3 #include "brw_structs.h"
   4
   5 #include "util/u_memory.h"
   6 #include "util/u_format.h"
   7
   8
   9 static unsigned brw_translate_surface_format( unsigned id )
  10 {
  11    switch (id) {
  12    case PIPE_FORMAT_R64_FLOAT:
  13       return BRW_SURFACEFORMAT_R64_FLOAT;
  14    case PIPE_FORMAT_R64G64_FLOAT:
  15       return BRW_SURFACEFORMAT_R64G64_FLOAT;
  16    case PIPE_FORMAT_R64G64B64_FLOAT:
  17       return BRW_SURFACEFORMAT_R64G64B64_FLOAT;
  18    case PIPE_FORMAT_R64G64B64A64_FLOAT:
  19       return BRW_SURFACEFORMAT_R64G64B64A64_FLOAT;
  20
  21    case PIPE_FORMAT_R32_FLOAT:
  22       return BRW_SURFACEFORMAT_R32_FLOAT;
  23    case PIPE_FORMAT_R32G32_FLOAT:
  24       return BRW_SURFACEFORMAT_R32G32_FLOAT;
  25    case PIPE_FORMAT_R32G32B32_FLOAT:
  26       return BRW_SURFACEFORMAT_R32G32B32_FLOAT;
  27    case PIPE_FORMAT_R32G32B32A32_FLOAT:
  28       return BRW_SURFACEFORMAT_R32G32B32A32_FLOAT;
  29
  30    case PIPE_FORMAT_R32_UNORM:
  31       return BRW_SURFACEFORMAT_R32_UNORM;
  32    case PIPE_FORMAT_R32G32_UNORM:
  33       return BRW_SURFACEFORMAT_R32G32_UNORM;
  34    case PIPE_FORMAT_R32G32B32_UNORM:
  35       return BRW_SURFACEFORMAT_R32G32B32_UNORM;
  36    case PIPE_FORMAT_R32G32B32A32_UNORM:
  37       return BRW_SURFACEFORMAT_R32G32B32A32_UNORM;
  38
  39    case PIPE_FORMAT_R32_USCALED:
  40       return BRW_SURFACEFORMAT_R32_USCALED;
  41    case PIPE_FORMAT_R32G32_USCALED:
  42       return BRW_SURFACEFORMAT_R32G32_USCALED;
  43    case PIPE_FORMAT_R32G32B32_USCALED:
  44       return BRW_SURFACEFORMAT_R32G32B32_USCALED;
  45    case PIPE_FORMAT_R32G32B32A32_USCALED:
  46       return BRW_SURFACEFORMAT_R32G32B32A32_USCALED;
  47
  48    case PIPE_FORMAT_R32_SNORM:
  49       return BRW_SURFACEFORMAT_R32_SNORM;
  50    case PIPE_FORMAT_R32G32_SNORM:
  51       return BRW_SURFACEFORMAT_R32G32_SNORM;
  52    case PIPE_FORMAT_R32G32B32_SNORM:
  53       return BRW_SURFACEFORMAT_R32G32B32_SNORM;
  54    case PIPE_FORMAT_R32G32B32A32_SNORM:
  55       return BRW_SURFACEFORMAT_R32G32B32A32_SNORM;
  56
  57    case PIPE_FORMAT_R32_SSCALED:
  58       return BRW_SURFACEFORMAT_R32_SSCALED;
  59    case PIPE_FORMAT_R32G32_SSCALED:
  60       return BRW_SURFACEFORMAT_R32G32_SSCALED;
  61    case PIPE_FORMAT_R32G32B32_SSCALED:
  62       return BRW_SURFACEFORMAT_R32G32B32_SSCALED;
  63    case PIPE_FORMAT_R32G32B32A32_SSCALED:
  64       return BRW_SURFACEFORMAT_R32G32B32A32_SSCALED;
  65
  66    case PIPE_FORMAT_R16_UNORM:
  67       return BRW_SURFACEFORMAT_R16_UNORM;
  68    case PIPE_FORMAT_R16G16_UNORM:
  69       return BRW_SURFACEFORMAT_R16G16_UNORM;
  70    case PIPE_FORMAT_R16G16B16_UNORM:
  71       return BRW_SURFACEFORMAT_R16G16B16_UNORM;
  72    case PIPE_FORMAT_R16G16B16A16_UNORM:
  73       return BRW_SURFACEFORMAT_R16G16B16A16_UNORM;
  74
  75    case PIPE_FORMAT_R16_USCALED:
  76       return BRW_SURFACEFORMAT_R16_USCALED;
  77    case PIPE_FORMAT_R16G16_USCALED:
  78       return BRW_SURFACEFORMAT_R16G16_USCALED;
  79    case PIPE_FORMAT_R16G16B16_USCALED:
  80       return BRW_SURFACEFORMAT_R16G16B16_USCALED;
  81    case PIPE_FORMAT_R16G16B16A16_USCALED:
  82       return BRW_SURFACEFORMAT_R16G16B16A16_USCALED;
  83
  84    case PIPE_FORMAT_R16_SNORM:
  85       return BRW_SURFACEFORMAT_R16_SNORM;
  86    case PIPE_FORMAT_R16G16_SNORM:
  87       return BRW_SURFACEFORMAT_R16G16_SNORM;
  88    case PIPE_FORMAT_R16G16B16_SNORM:
  89       return BRW_SURFACEFORMAT_R16G16B16_SNORM;
  90    case PIPE_FORMAT_R16G16B16A16_SNORM:
  91       return BRW_SURFACEFORMAT_R16G16B16A16_SNORM;
  92
  93    case PIPE_FORMAT_R16_SSCALED:
  94       return BRW_SURFACEFORMAT_R16_SSCALED;
  95    case PIPE_FORMAT_R16G16_SSCALED:
  96       return BRW_SURFACEFORMAT_R16G16_SSCALED;
  97    case PIPE_FORMAT_R16G16B16_SSCALED:
  98       return BRW_SURFACEFORMAT_R16G16B16_SSCALED;
  99    case PIPE_FORMAT_R16G16B16A16_SSCALED:
 100       return BRW_SURFACEFORMAT_R16G16B16A16_SSCALED;
 101
 102    case PIPE_FORMAT_R8_UNORM:
 103       return BRW_SURFACEFORMAT_R8_UNORM;
 104    case PIPE_FORMAT_R8G8_UNORM:
 105       return BRW_SURFACEFORMAT_R8G8_UNORM;
 106    case PIPE_FORMAT_R8G8B8_UNORM:
 107       return BRW_SURFACEFORMAT_R8G8B8_UNORM;
 108    case PIPE_FORMAT_R8G8B8A8_UNORM:
 109       return BRW_SURFACEFORMAT_R8G8B8A8_UNORM;
 110
 111    case PIPE_FORMAT_R8_USCALED:
 112       return BRW_SURFACEFORMAT_R8_USCALED;
 113    case PIPE_FORMAT_R8G8_USCALED:
 114       return BRW_SURFACEFORMAT_R8G8_USCALED;
 115    case PIPE_FORMAT_R8G8B8_USCALED:
 116       return BRW_SURFACEFORMAT_R8G8B8_USCALED;
 117    case PIPE_FORMAT_R8G8B8A8_USCALED:
 118       return BRW_SURFACEFORMAT_R8G8B8A8_USCALED;
 119
 120    case PIPE_FORMAT_R8_SNORM:
 121       return BRW_SURFACEFORMAT_R8_SNORM;
 122    case PIPE_FORMAT_R8G8_SNORM:
 123       return BRW_SURFACEFORMAT_R8G8_SNORM;
 124    case PIPE_FORMAT_R8G8B8_SNORM:
 125       return BRW_SURFACEFORMAT_R8G8B8_SNORM;
 126    case PIPE_FORMAT_R8G8B8A8_SNORM:
 127       return BRW_SURFACEFORMAT_R8G8B8A8_SNORM;
 128
 129    case PIPE_FORMAT_R8_SSCALED:
 130       return BRW_SURFACEFORMAT_R8_SSCALED;
 131    case PIPE_FORMAT_R8G8_SSCALED:
 132       return BRW_SURFACEFORMAT_R8G8_SSCALED;
 133    case PIPE_FORMAT_R8G8B8_SSCALED:
 134       return BRW_SURFACEFORMAT_R8G8B8_SSCALED;
 135    case PIPE_FORMAT_R8G8B8A8_SSCALED:
 136       return BRW_SURFACEFORMAT_R8G8B8A8_SSCALED;
 137
 138    default:
 139       assert(0);
 140       return 0;
 141    }
 142 }
 143
 144 static void brw_translate_vertex_elements(struct brw_context *brw,
 145                                           struct brw_vertex_element_packet *brw_velems,
 146                                           const struct pipe_vertex_element *attribs,
 147                                           unsigned count)
 148 {
 149    unsigned i;
 150
 151    /* If the VS doesn't read any inputs (calculating vertex position from
 152     * a state variable for some reason, for example), emit a single pad
 153     * VERTEX_ELEMENT struct and bail.
 154     *
 155     * The stale VB state stays in place, but they don't do anything unless
 156     * a VE loads from them.
 157     */
 158    brw_velems->header.opcode = CMD_VERTEX_ELEMENT;
 159
 160    if (count == 0) {
 161       brw_velems->header.length = 1;
 162       brw_velems->ve[0].ve0.src_offset = 0;
 163       brw_velems->ve[0].ve0.src_format = BRW_SURFACEFORMAT_R32G32B32A32_FLOAT;
 164       brw_velems->ve[0].ve0.valid = 1;
 165       brw_velems->ve[0].ve0.vertex_buffer_index = 0;
 166       brw_velems->ve[0].ve1.dst_offset = 0;
 167       brw_velems->ve[0].ve1.vfcomponent0 = BRW_VE1_COMPONENT_STORE_0;
 168       brw_velems->ve[0].ve1.vfcomponent1 = BRW_VE1_COMPONENT_STORE_0;
 169       brw_velems->ve[0].ve1.vfcomponent2 = BRW_VE1_COMPONENT_STORE_0;
 170       brw_velems->ve[0].ve1.vfcomponent3 = BRW_VE1_COMPONENT_STORE_1_FLT;
 171       return;
 172    }
 173
 174
 175    /* Now emit vertex element (VEP) state packets.
 176     *
 177     */
 178    brw_velems->header.length = (1 + count * 2) - 2;
 179    for (i = 0; i < count; i++) {
 180       const struct pipe_vertex_element *input = &attribs[i];
 181       unsigned nr_components = util_format_get_nr_components(input->src_format);
 182
 183       uint32_t format = brw_translate_surface_format( input->src_format );
 184       uint32_t comp0 = BRW_VE1_COMPONENT_STORE_SRC;
 185       uint32_t comp1 = BRW_VE1_COMPONENT_STORE_SRC;
 186       uint32_t comp2 = BRW_VE1_COMPONENT_STORE_SRC;
 187       uint32_t comp3 = BRW_VE1_COMPONENT_STORE_SRC;
 188
 189       switch (nr_components) {
 190       case 0: comp0 = BRW_VE1_COMPONENT_STORE_0; /* fallthrough */
 191       case 1: comp1 = BRW_VE1_COMPONENT_STORE_0; /* fallthrough */
 192       case 2: comp2 = BRW_VE1_COMPONENT_STORE_0; /* fallthrough */
 193       case 3: comp3 = BRW_VE1_COMPONENT_STORE_1_FLT;
 194          break;
 195       }
 196
 197       brw_velems->ve[i].ve0.src_offset = input->src_offset;
 198       brw_velems->ve[i].ve0.src_format = format;
 199       brw_velems->ve[i].ve0.valid = 1;
 200       brw_velems->ve[i].ve0.vertex_buffer_index = input->vertex_buffer_index;
 201       brw_velems->ve[i].ve1.vfcomponent0 = comp0;
 202       brw_velems->ve[i].ve1.vfcomponent1 = comp1;
 203       brw_velems->ve[i].ve1.vfcomponent2 = comp2;
 204       brw_velems->ve[i].ve1.vfcomponent3 = comp3;
 205
 206       if (BRW_IS_IGDNG(brw))
 207          brw_velems->ve[i].ve1.dst_offset = 0;
 208       else
 209          brw_velems->ve[i].ve1.dst_offset = i * 4;
 210    }
 211 }
 212
 213 static void* brw_create_vertex_elements_state( struct pipe_context *pipe,
 214                                                unsigned count,
 215                                                const struct pipe_vertex_element *attribs )
 216 {
 217    /* note: for the brw_swtnl.c code (if ever we need draw fallback) we'd also need
 218       to store the original data */
 219    struct brw_context *brw = brw_context(pipe);
 220    struct brw_vertex_element_packet *velems;
 221    assert(count <= BRW_VEP_MAX);
 222    velems = (struct brw_vertex_element_packet *) MALLOC(sizeof(struct brw_vertex_element_packet));
 223    if (velems) {
 224       brw_translate_vertex_elements(brw, velems, attribs, count);
 225    }
 226    return velems;
 227 }
 228
 229 static void brw_bind_vertex_elements_state(struct pipe_context *pipe,
 230                                            void *velems)
 231 {
 232    struct brw_context *brw = brw_context(pipe);
 233    struct brw_vertex_element_packet *brw_velems = (struct brw_vertex_element_packet *) velems;
 234
 235    brw->curr.velems = brw_velems;
 236
 237    brw->state.dirty.mesa |= PIPE_NEW_VERTEX_ELEMENT;
 238 }
 239
 240 static void brw_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
 241 {
 242    FREE( velems );
 243 }
 244
 245
 246 static void brw_set_vertex_buffers(struct pipe_context *pipe,
 247                                    unsigned count,
 248                                    const struct pipe_vertex_buffer *buffers)
 249 {
 250    struct brw_context *brw = brw_context(pipe);
 251    unsigned i;
 252
 253    /* Check for no change */
 254    if (count == brw->curr.num_vertex_buffers &&
 255        memcmp(brw->curr.vertex_buffer,
 256               buffers,
 257               count * sizeof buffers[0]) == 0)
 258       return;
 259
 260    /* Adjust refcounts */
 261    for (i = 0; i < count; i++)
 262       pipe_buffer_reference(&brw->curr.vertex_buffer[i].buffer,
 263                             buffers[i].buffer);
 264
 265    for ( ; i < brw->curr.num_vertex_buffers; i++)
 266       pipe_buffer_reference(&brw->curr.vertex_buffer[i].buffer,
 267                             NULL);
 268
 269    /* Copy remaining data */
 270    memcpy(brw->curr.vertex_buffer, buffers, count * sizeof buffers[0]);
 271    brw->curr.num_vertex_buffers = count;
 272
 273    brw->state.dirty.mesa |= PIPE_NEW_VERTEX_BUFFER;
 274 }
 275
 276
 277 void
 278 brw_pipe_vertex_init( struct brw_context *brw )
 279 {
 280    brw->base.set_vertex_buffers = brw_set_vertex_buffers;
 281    brw->base.create_vertex_elements_state = brw_create_vertex_elements_state;
 282    brw->base.bind_vertex_elements_state = brw_bind_vertex_elements_state;
 283    brw->base.delete_vertex_elements_state = brw_delete_vertex_elements_state;
 284 }
 285
 286
 287 void
 288 brw_pipe_vertex_cleanup( struct brw_context *brw )
 289 {
 290
 291    /* Release bound pipe vertex_buffers
 292     */
 293
 294    /* Release some other stuff
 295     */
 296 #if 0
 297    for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
 298       bo_reference(&brw->vb.inputs[i].bo, NULL);
 299       brw->vb.inputs[i].bo = NULL;
 300    }
 301 #endif
 302 }