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_spu.h"
  39 #include "cell_batch.h"
  40
  41 #include "pipe/cell/common.h"
  42 #include "pipe/draw/draw_context.h"
  43 #include "pipe/draw/draw_private.h"
  44
  45 /**
  46  * Run the vertex shader on all vertices in the vertex queue.
  47  * Called by the draw module when the vertx cache needs to be flushed.
  48  */
  49 void
  50 cell_vertex_shader_queue_flush(struct draw_context *draw)
  51 {
  52    struct cell_context *const cell =
  53        (struct cell_context *) draw->driver_private;
  54    struct cell_command_vs *const vs = &cell_global.command[0].vs;
  55    uint64_t *batch;
  56    struct cell_array_info *array_info;
  57    unsigned i, j;
  58
  59    assert(draw->vs.queue_nr != 0);
  60
  61    /* XXX: do this on statechange:
  62     */
  63    draw_update_vertex_fetch(draw);
  64
  65    for (i = 0; i < draw->vertex_fetch.nr_attrs; i++) {
  66       batch = cell_batch_alloc(cell, sizeof(batch[0]) + sizeof(*array_info));
  67
  68       batch[0] = CELL_CMD_STATE_VS_ARRAY_INFO;
  69
  70       array_info = (struct cell_array_info *) &batch[1];
  71       assert(draw->vertex_fetch.src_ptr[i] != NULL);
  72       array_info->base = (uintptr_t) draw->vertex_fetch.src_ptr[i];
  73       array_info->attr = i;
  74       array_info->pitch = draw->vertex_fetch.pitch[i];
  75       array_info->format = draw->vertex_element[i].src_format;
  76    }
  77
  78    batch = cell_batch_alloc(cell, sizeof(batch[0])
  79                             + sizeof(struct pipe_viewport_state));
  80    batch[0] = CELL_CMD_STATE_VIEWPORT;
  81    (void) memcpy(&batch[1], &draw->viewport,
  82                  sizeof(struct pipe_viewport_state));
  83
  84    cell_batch_flush(cell);
  85
  86    vs->opcode = CELL_CMD_VS_EXECUTE;
  87    vs->shader.num_outputs = draw->num_vs_outputs;
  88    vs->shader.declarations = (uintptr_t) draw->machine.Declarations;
  89    vs->shader.num_declarations = draw->machine.NumDeclarations;
  90    vs->shader.instructions = (uintptr_t) draw->machine.Instructions;
  91    vs->shader.num_instructions = draw->machine.NumInstructions;
  92    vs->shader.uniforms = (uintptr_t) draw->user.constants;
  93    vs->shader.immediates = (uintptr_t) draw->machine.Imms;
  94    vs->shader.num_immediates = draw->machine.ImmLimit / 4;
  95    vs->nr_attrs = draw->vertex_fetch.nr_attrs;
  96
  97    (void) memcpy(vs->plane, draw->plane, sizeof(draw->plane));
  98    vs->nr_planes = draw->nr_planes;
  99
 100    for (i = 0; i < draw->vs.queue_nr; i += SPU_VERTS_PER_BATCH) {
 101       const unsigned n = MIN2(SPU_VERTS_PER_BATCH, draw->vs.queue_nr - i);
 102
 103       for (j = 0; j < n; j++) {
 104          vs->elts[j] = draw->vs.queue[i + j].elt;
 105          vs->vOut[j] = (uintptr_t) draw->vs.queue[i + j].dest;
 106       }
 107
 108       for (/* empty */; j < SPU_VERTS_PER_BATCH; j++) {
 109          vs->elts[j] = vs->elts[0];
 110          vs->vOut[j] = vs->vOut[0];
 111       }
 112
 113       vs->num_elts = n;
 114       send_mbox_message(cell_global.spe_contexts[0], CELL_CMD_VS_EXECUTE);
 115
 116       cell_flush_int(& cell->pipe, PIPE_FLUSH_WAIT);
 117    }
 118
 119    draw->vs.queue_nr = 0;
 120 }