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

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 /* Author:
  29  *    Brian Paul
  30  *    Keith Whitwell
  31  */
  32
  33
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_context.h"
  36 #include "pipe/p_winsys.h"
  37
  38 #include "cell_context.h"
  39 #include "cell_draw_arrays.h"
  40 #include "cell_state.h"
  41 #include "cell_flush.h"
  42
  43 #include "draw/draw_context.h"
  44
  45
  46
  47 static void
  48 cell_map_constant_buffers(struct cell_context *sp)
  49 {
  50    struct pipe_winsys *ws = sp->pipe.winsys;
  51    uint i;
  52    for (i = 0; i < 2; i++) {
  53       if (sp->constants[i].size) {
  54          sp->mapped_constants[i] = ws->buffer_map(ws, sp->constants[i].buffer,
  55                                                   PIPE_BUFFER_USAGE_CPU_READ);
  56          cell_flush_buffer_range(sp, sp->mapped_constants[i],
  57                                  sp->constants[i].buffer->size);
  58       }
  59    }
  60
  61    draw_set_mapped_constant_buffer(sp->draw,
  62                                    sp->mapped_constants[PIPE_SHADER_VERTEX]);
  63 }
  64
  65 static void
  66 cell_unmap_constant_buffers(struct cell_context *sp)
  67 {
  68    struct pipe_winsys *ws = sp->pipe.winsys;
  69    uint i;
  70    for (i = 0; i < 2; i++) {
  71       if (sp->constants[i].size)
  72          ws->buffer_unmap(ws, sp->constants[i].buffer);
  73       sp->mapped_constants[i] = NULL;
  74    }
  75 }
  76
  77
  78 boolean
  79 cell_draw_arrays(struct pipe_context *pipe, unsigned mode,
  80                      unsigned start, unsigned count)
  81 {
  82    return cell_draw_elements(pipe, NULL, 0, mode, start, count);
  83 }
  84
  85
  86
  87 /**
  88  * Draw vertex arrays, with optional indexing.
  89  * Basically, map the vertex buffers (and drawing surfaces), then hand off
  90  * the drawing to the 'draw' module.
  91  *
  92  * XXX should the element buffer be specified/bound with a separate function?
  93  */
  94 boolean
  95 cell_draw_elements(struct pipe_context *pipe,
  96                        struct pipe_buffer *indexBuffer,
  97                        unsigned indexSize,
  98                        unsigned mode, unsigned start, unsigned count)
  99 {
 100    struct cell_context *sp = cell_context(pipe);
 101    struct draw_context *draw = sp->draw;
 102    unsigned i;
 103
 104    /* first, check that the primitive is not malformed.  It is the
 105     * state tracker's responsibility to do send only correctly formed
 106     * primitives down.  It currently isn't doing that though...
 107     */
 108 #if 1
 109    count = draw_trim_prim( mode, count );
 110 #else
 111    if (!draw_validate_prim( mode, count ))
 112       assert(0);
 113 #endif
 114
 115    if (sp->dirty)
 116       cell_update_derived( sp );
 117
 118 #if 0
 119    cell_map_surfaces(sp);
 120 #endif
 121    cell_map_constant_buffers(sp);
 122
 123    /*
 124     * Map vertex buffers
 125     */
 126    for (i = 0; i < sp->num_vertex_buffers; i++) {
 127       void *buf = pipe->winsys->buffer_map(pipe->winsys,
 128                                            sp->vertex_buffer[i].buffer,
 129                                            PIPE_BUFFER_USAGE_CPU_READ);
 130       cell_flush_buffer_range(sp, buf, sp->vertex_buffer[i].buffer->size);
 131       draw_set_mapped_vertex_buffer(draw, i, buf);
 132    }
 133    /* Map index buffer, if present */
 134    if (indexBuffer) {
 135       void *mapped_indexes = pipe->winsys->buffer_map(pipe->winsys,
 136                                                       indexBuffer,
 137                                                       PIPE_BUFFER_USAGE_CPU_READ);
 138       draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
 139    }
 140    else {
 141       /* no index/element buffer */
 142       draw_set_mapped_element_buffer(draw, 0, NULL);
 143    }
 144
 145
 146    /* draw! */
 147    draw_arrays(draw, mode, start, count);
 148
 149    /*
 150     * unmap vertex/index buffers - will cause draw module to flush
 151     */
 152    for (i = 0; i < sp->num_vertex_buffers; i++) {
 153       draw_set_mapped_vertex_buffer(draw, i, NULL);
 154       pipe->winsys->buffer_unmap(pipe->winsys, sp->vertex_buffer[i].buffer);
 155    }
 156    if (indexBuffer) {
 157       draw_set_mapped_element_buffer(draw, 0, NULL);
 158       pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
 159    }
 160
 161    /* Note: leave drawing surfaces mapped */
 162    cell_unmap_constant_buffers(sp);
 163
 164    return TRUE;
 165 }