src/gallium/auxiliary/vl/vl_vertex_buffers.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 Christian König
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <assert.h>
  29 #include "util/u_format.h"
  30 #include "vl_vertex_buffers.h"
  31 #include "vl_types.h"
  32
  33 /* vertices for a quad covering a block */
  34 static const struct vertex2f block_quad[4] = {
  35    {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f}
  36 };
  37
  38 struct pipe_vertex_buffer
  39 vl_vb_upload_quads(struct pipe_context *pipe)
  40 {
  41    struct pipe_vertex_buffer quad;
  42    struct pipe_transfer *buf_transfer;
  43    struct vertex2f *v;
  44
  45    unsigned i;
  46
  47    assert(pipe);
  48
  49    /* create buffer */
  50    quad.stride = sizeof(struct vertex2f);
  51    quad.buffer_offset = 0;
  52    quad.buffer = pipe_buffer_create
  53    (
  54       pipe->screen,
  55       PIPE_BIND_VERTEX_BUFFER,
  56       PIPE_USAGE_STATIC,
  57       sizeof(struct vertex2f) * 4
  58    );
  59    quad.user_buffer = NULL;
  60
  61    if(!quad.buffer)
  62       return quad;
  63
  64    /* and fill it */
  65    v = pipe_buffer_map
  66    (
  67       pipe,
  68       quad.buffer,
  69       PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
  70       &buf_transfer
  71    );
  72
  73    for (i = 0; i < 4; ++i, ++v) {
  74       v->x = block_quad[i].x;
  75       v->y = block_quad[i].y;
  76    }
  77
  78    pipe_buffer_unmap(pipe, buf_transfer);
  79
  80    return quad;
  81 }
  82
  83 struct pipe_vertex_buffer
  84 vl_vb_upload_pos(struct pipe_context *pipe, unsigned width, unsigned height)
  85 {
  86    struct pipe_vertex_buffer pos;
  87    struct pipe_transfer *buf_transfer;
  88    struct vertex2s *v;
  89
  90    unsigned x, y;
  91
  92    assert(pipe);
  93
  94    /* create buffer */
  95    pos.stride = sizeof(struct vertex2s);
  96    pos.buffer_offset = 0;
  97    pos.buffer = pipe_buffer_create
  98    (
  99       pipe->screen,
 100       PIPE_BIND_VERTEX_BUFFER,
 101       PIPE_USAGE_STATIC,
 102       sizeof(struct vertex2s) * width * height
 103    );
 104    pos.user_buffer = NULL;
 105
 106    if(!pos.buffer)
 107       return pos;
 108
 109    /* and fill it */
 110    v = pipe_buffer_map
 111    (
 112       pipe,
 113       pos.buffer,
 114       PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
 115       &buf_transfer
 116    );
 117
 118    for ( y = 0; y < height; ++y) {
 119       for ( x = 0; x < width; ++x, ++v) {
 120          v->x = x;
 121          v->y = y;
 122       }
 123    }
 124
 125    pipe_buffer_unmap(pipe, buf_transfer);
 126
 127    return pos;
 128 }
 129
 130 static struct pipe_vertex_element
 131 vl_vb_get_quad_vertex_element(void)
 132 {
 133    struct pipe_vertex_element element;
 134
 135    /* setup rectangle element */
 136    element.src_offset = 0;
 137    element.instance_divisor = 0;
 138    element.vertex_buffer_index = 0;
 139    element.src_format = PIPE_FORMAT_R32G32_FLOAT;
 140
 141    return element;
 142 }
 143
 144 static void
 145 vl_vb_element_helper(struct pipe_vertex_element* elements, unsigned num_elements,
 146                      unsigned vertex_buffer_index)
 147 {
 148    unsigned i, offset = 0;
 149
 150    assert(elements && num_elements);
 151
 152    for ( i = 0; i < num_elements; ++i ) {
 153       elements[i].src_offset = offset;
 154       elements[i].instance_divisor = 1;
 155       elements[i].vertex_buffer_index = vertex_buffer_index;
 156       offset += util_format_get_blocksize(elements[i].src_format);
 157    }
 158 }
 159
 160 void *
 161 vl_vb_get_ves_ycbcr(struct pipe_context *pipe)
 162 {
 163    struct pipe_vertex_element vertex_elems[NUM_VS_INPUTS];
 164
 165    assert(pipe);
 166
 167    memset(&vertex_elems, 0, sizeof(vertex_elems));
 168    vertex_elems[VS_I_RECT] = vl_vb_get_quad_vertex_element();
 169
 170    /* Position element */
 171    vertex_elems[VS_I_VPOS].src_format = PIPE_FORMAT_R8G8B8A8_USCALED;
 172
 173    /* block num element */
 174    vertex_elems[VS_I_BLOCK_NUM].src_format = PIPE_FORMAT_R32_FLOAT;
 175
 176    vl_vb_element_helper(&vertex_elems[VS_I_VPOS], 2, 1);
 177
 178    return pipe->create_vertex_elements_state(pipe, 3, vertex_elems);
 179 }
 180
 181 void *
 182 vl_vb_get_ves_mv(struct pipe_context *pipe)
 183 {
 184    struct pipe_vertex_element vertex_elems[NUM_VS_INPUTS];
 185
 186    assert(pipe);
 187
 188    memset(&vertex_elems, 0, sizeof(vertex_elems));
 189    vertex_elems[VS_I_RECT] = vl_vb_get_quad_vertex_element();
 190
 191    /* Position element */
 192    vertex_elems[VS_I_VPOS].src_format = PIPE_FORMAT_R16G16_SSCALED;
 193
 194    vl_vb_element_helper(&vertex_elems[VS_I_VPOS], 1, 1);
 195
 196    /* motion vector TOP element */
 197    vertex_elems[VS_I_MV_TOP].src_format = PIPE_FORMAT_R16G16B16A16_SSCALED;
 198
 199    /* motion vector BOTTOM element */
 200    vertex_elems[VS_I_MV_BOTTOM].src_format = PIPE_FORMAT_R16G16B16A16_SSCALED;
 201
 202    vl_vb_element_helper(&vertex_elems[VS_I_MV_TOP], 2, 2);
 203
 204    return pipe->create_vertex_elements_state(pipe, NUM_VS_INPUTS, vertex_elems);
 205 }
 206
 207 bool
 208 vl_vb_init(struct vl_vertex_buffer *buffer, struct pipe_context *pipe,
 209            unsigned width, unsigned height)
 210 {
 211    unsigned i, size;
 212
 213    assert(buffer);
 214
 215    buffer->width = width;
 216    buffer->height = height;
 217
 218    size = width * height;
 219
 220    for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
 221       buffer->ycbcr[i].resource = pipe_buffer_create
 222       (
 223          pipe->screen,
 224          PIPE_BIND_VERTEX_BUFFER,
 225          PIPE_USAGE_STREAM,
 226          sizeof(struct vl_ycbcr_block) * size * 4
 227       );
 228       if (!buffer->ycbcr[i].resource)
 229          goto error_ycbcr;
 230    }
 231
 232    for (i = 0; i < VL_MAX_REF_FRAMES; ++i) {
 233       buffer->mv[i].resource = pipe_buffer_create
 234       (
 235          pipe->screen,
 236          PIPE_BIND_VERTEX_BUFFER,
 237          PIPE_USAGE_STREAM,
 238          sizeof(struct vl_motionvector) * size
 239       );
 240       if (!buffer->mv[i].resource)
 241          goto error_mv;
 242    }
 243
 244    vl_vb_map(buffer, pipe);
 245    return true;
 246
 247 error_mv:
 248    for (i = 0; i < VL_NUM_COMPONENTS; ++i)
 249       pipe_resource_reference(&buffer->mv[i].resource, NULL);
 250
 251 error_ycbcr:
 252    for (i = 0; i < VL_NUM_COMPONENTS; ++i)
 253       pipe_resource_reference(&buffer->ycbcr[i].resource, NULL);
 254    return false;
 255 }
 256
 257 unsigned
 258 vl_vb_attributes_per_plock(struct vl_vertex_buffer *buffer)
 259 {
 260    return 1;
 261 }
 262
 263 struct pipe_vertex_buffer
 264 vl_vb_get_ycbcr(struct vl_vertex_buffer *buffer, int component)
 265 {
 266    struct pipe_vertex_buffer buf;
 267
 268    assert(buffer);
 269
 270    buf.stride = sizeof(struct vl_ycbcr_block);
 271    buf.buffer_offset = 0;
 272    buf.buffer = buffer->ycbcr[component].resource;
 273    buf.user_buffer = NULL;
 274
 275    return buf;
 276 }
 277
 278 struct pipe_vertex_buffer
 279 vl_vb_get_mv(struct vl_vertex_buffer *buffer, int motionvector)
 280 {
 281    struct pipe_vertex_buffer buf;
 282
 283    assert(buffer);
 284
 285    buf.stride = sizeof(struct vl_motionvector);
 286    buf.buffer_offset = 0;
 287    buf.buffer = buffer->mv[motionvector].resource;
 288    buf.user_buffer = NULL;
 289
 290    return buf;
 291 }
 292
 293 void
 294 vl_vb_map(struct vl_vertex_buffer *buffer, struct pipe_context *pipe)
 295 {
 296    unsigned i;
 297
 298    assert(buffer && pipe);
 299
 300    for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
 301       buffer->ycbcr[i].vertex_stream = pipe_buffer_map
 302       (
 303          pipe,
 304          buffer->ycbcr[i].resource,
 305          PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
 306          &buffer->ycbcr[i].transfer
 307       );
 308    }
 309
 310    for (i = 0; i < VL_MAX_REF_FRAMES; ++i) {
 311       buffer->mv[i].vertex_stream = pipe_buffer_map
 312       (
 313          pipe,
 314          buffer->mv[i].resource,
 315          PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
 316          &buffer->mv[i].transfer
 317       );
 318    }
 319
 320 }
 321
 322 struct vl_ycbcr_block *
 323 vl_vb_get_ycbcr_stream(struct vl_vertex_buffer *buffer, int component)
 324 {
 325    assert(buffer);
 326    assert(component < VL_NUM_COMPONENTS);
 327
 328    return buffer->ycbcr[component].vertex_stream;
 329 }
 330
 331 unsigned
 332 vl_vb_get_mv_stream_stride(struct vl_vertex_buffer *buffer)
 333 {
 334    assert(buffer);
 335
 336    return buffer->width;
 337 }
 338
 339 struct vl_motionvector *
 340 vl_vb_get_mv_stream(struct vl_vertex_buffer *buffer, int ref_frame)
 341 {
 342    assert(buffer);
 343    assert(ref_frame < VL_MAX_REF_FRAMES);
 344
 345    return buffer->mv[ref_frame].vertex_stream;
 346 }
 347
 348 void
 349 vl_vb_unmap(struct vl_vertex_buffer *buffer, struct pipe_context *pipe)
 350 {
 351    unsigned i;
 352
 353    assert(buffer && pipe);
 354
 355    for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
 356       pipe_buffer_unmap(pipe, buffer->ycbcr[i].transfer);
 357    }
 358
 359    for (i = 0; i < VL_MAX_REF_FRAMES; ++i) {
 360       pipe_buffer_unmap(pipe, buffer->mv[i].transfer);
 361    }
 362 }
 363
 364 void
 365 vl_vb_cleanup(struct vl_vertex_buffer *buffer)
 366 {
 367    unsigned i;
 368
 369    assert(buffer);
 370
 371    for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
 372       pipe_resource_reference(&buffer->ycbcr[i].resource, NULL);
 373    }
 374
 375    for (i = 0; i < VL_MAX_REF_FRAMES; ++i) {
 376       pipe_resource_reference(&buffer->mv[i].resource, NULL);
 377    }
 378 }