src/gallium/drivers/cell/ppu/cell_vertex_shader.c

   1 /*
   2  * (C) Copyright IBM Corporation 2008
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file cell_vertex_shader.c
  27  * Vertex shader interface routines for Cell.
  28  *
  29  * \author Ian Romanick <idr@us.ibm.com>
  30  */
  31
  32 #include "pipe/p_defines.h"
  33 #include "pipe/p_context.h"
  34 #include "pipe/p_winsys.h"
  35
  36 #include "cell_context.h"
  37 #include "cell_draw_arrays.h"
  38 #include "cell_flush.h"
  39 #include "cell_spu.h"
  40 #include "cell_batch.h"
  41
  42 #include "cell/common.h"
  43 #include "draw/draw_context.h"
  44 #include "draw/draw_private.h"
  45
  46 /**
  47  * Run the vertex shader on all vertices in the vertex queue.
  48  * Called by the draw module when the vertx cache needs to be flushed.
  49  */
  50 void
  51 cell_vertex_shader_queue_flush(struct draw_context *draw)
  52 {
  53    struct cell_context *const cell =
  54        (struct cell_context *) draw->driver_private;
  55    struct cell_command_vs *const vs = &cell_global.command[0].vs;
  56    uint64_t *batch;
  57    struct cell_array_info *array_info;
  58    unsigned i, j;
  59    struct cell_attribute_fetch_code *cf;
  60
  61    assert(draw->vs.queue_nr != 0);
  62
  63    /* XXX: do this on statechange:
  64     */
  65    draw_update_vertex_fetch(draw);
  66    cell_update_vertex_fetch(draw);
  67
  68
  69    batch = cell_batch_alloc(cell, sizeof(batch[0]) + sizeof(*cf));
  70    batch[0] = CELL_CMD_STATE_ATTRIB_FETCH;
  71    cf = (struct cell_attribute_fetch_code *) (&batch[1]);
  72    cf->base = cell->attrib_fetch.store;
  73    cf->size = ROUNDUP16((unsigned)((void *) cell->attrib_fetch.csr
  74                                    - (void *) cell->attrib_fetch.store));
  75
  76
  77    for (i = 0; i < draw->vertex_fetch.nr_attrs; i++) {
  78       const enum pipe_format format = draw->vertex_element[i].src_format;
  79       const unsigned count = ((pf_size_x(format) != 0)
  80                               + (pf_size_y(format) != 0)
  81                               + (pf_size_z(format) != 0)
  82                               + (pf_size_w(format) != 0));
  83       const unsigned size = pf_size_x(format) * count;
  84
  85       batch = cell_batch_alloc(cell, sizeof(batch[0]) + sizeof(*array_info));
  86
  87       batch[0] = CELL_CMD_STATE_VS_ARRAY_INFO;
  88
  89       array_info = (struct cell_array_info *) &batch[1];
  90       assert(draw->vertex_fetch.src_ptr[i] != NULL);
  91       array_info->base = (uintptr_t) draw->vertex_fetch.src_ptr[i];
  92       array_info->attr = i;
  93       array_info->pitch = draw->vertex_fetch.pitch[i];
  94       array_info->size = size;
  95       array_info->function_offset = cell->attrib_fetch_offsets[i];
  96    }
  97
  98    batch = cell_batch_alloc(cell, sizeof(batch[0])
  99                             + sizeof(struct pipe_viewport_state));
 100    batch[0] = CELL_CMD_STATE_VIEWPORT;
 101    (void) memcpy(&batch[1], &draw->viewport,
 102                  sizeof(struct pipe_viewport_state));
 103
 104    {
 105       uint64_t uniforms = (uintptr_t) draw->user.constants;
 106
 107       batch = cell_batch_alloc(cell, 2 *sizeof(batch[0]));
 108       batch[0] = CELL_CMD_STATE_UNIFORMS;
 109       batch[1] = uniforms;
 110    }
 111
 112    cell_batch_flush(cell);
 113
 114    vs->opcode = CELL_CMD_VS_EXECUTE;
 115    vs->nr_attrs = draw->vertex_fetch.nr_attrs;
 116
 117    (void) memcpy(vs->plane, draw->plane, sizeof(draw->plane));
 118    vs->nr_planes = draw->nr_planes;
 119
 120    for (i = 0; i < draw->vs.queue_nr; i += SPU_VERTS_PER_BATCH) {
 121       const unsigned n = MIN2(SPU_VERTS_PER_BATCH, draw->vs.queue_nr - i);
 122
 123       for (j = 0; j < n; j++) {
 124          vs->elts[j] = draw->vs.queue[i + j].elt;
 125          vs->vOut[j] = (uintptr_t) draw->vs.queue[i + j].vertex;
 126       }
 127
 128       for (/* empty */; j < SPU_VERTS_PER_BATCH; j++) {
 129          vs->elts[j] = vs->elts[0];
 130          vs->vOut[j] = (uintptr_t) draw->vs.queue[i + j].vertex;
 131       }
 132
 133       vs->num_elts = n;
 134       send_mbox_message(cell_global.spe_contexts[0], CELL_CMD_VS_EXECUTE);
 135
 136       cell_flush_int(& cell->pipe, PIPE_FLUSH_WAIT);
 137    }
 138
 139    draw->vs.post_nr = draw->vs.queue_nr;
 140    draw->vs.queue_nr = 0;
 141 }