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 "util/u_inlines.h"
  37 #include "util/u_draw_quad.h"
  38
  39 #include "cell_context.h"
  40 #include "cell_draw_arrays.h"
  41 #include "cell_state.h"
  42 #include "cell_flush.h"
  43 #include "cell_texture.h"
  44
  45 #include "draw/draw_context.h"
  46
  47
  48
  49
  50
  51
  52 /**
  53  * Draw vertex arrays, with optional indexing.
  54  * Basically, map the vertex buffers (and drawing surfaces), then hand off
  55  * the drawing to the 'draw' module.
  56  *
  57  * XXX should the element buffer be specified/bound with a separate function?
  58  */
  59 static void
  60 cell_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
  61 {
  62    struct cell_context *cell = cell_context(pipe);
  63    struct draw_context *draw = cell->draw;
  64    void *mapped_indices = NULL;
  65    unsigned i;
  66
  67    if (cell->dirty)
  68       cell_update_derived( cell );
  69
  70 #if 0
  71    cell_map_surfaces(cell);
  72 #endif
  73
  74    /*
  75     * Map vertex buffers
  76     */
  77    for (i = 0; i < cell->num_vertex_buffers; i++) {
  78       void *buf = cell_resource(cell->vertex_buffer[i].buffer)->data;
  79       draw_set_mapped_vertex_buffer(draw, i, buf);
  80    }
  81    /* Map index buffer, if present */
  82    if (info->indexed && cell->index_buffer.buffer) {
  83       mapped_indices = cell_resource(cell->index_buffer.buffer)->data;
  84       mapped_indices += cell->index_buffer.offset;
  85    }
  86
  87    draw_set_mapped_element_buffer_range(draw, (mapped_indices) ?
  88                                         lp->index_buffer.index_size : 0,
  89                                         info->index_bias,
  90                                         info->min_index,
  91                                         info->max_index,
  92                                         mapped_indices);
  93
  94    /* draw! */
  95    draw_arrays(draw, info->mode, info->start, info->count);
  96
  97    /*
  98     * unmap vertex/index buffers - will cause draw module to flush
  99     */
 100    for (i = 0; i < cell->num_vertex_buffers; i++) {
 101       draw_set_mapped_vertex_buffer(draw, i, NULL);
 102    }
 103    if (mapped_indices) {
 104       draw_set_mapped_element_buffer(draw, 0, 0, NULL);
 105    }
 106
 107    /*
 108     * TODO: Flush only when a user vertex/index buffer is present
 109     * (or even better, modify draw module to do this
 110     * internally when this condition is seen?)
 111     */
 112    draw_flush(draw);
 113 }
 114
 115
 116 static void
 117 cell_draw_range_elements(struct pipe_context *pipe,
 118                          struct pipe_resource *indexBuffer,
 119                          unsigned indexSize,
 120                          int indexBias,
 121                          unsigned min_index,
 122                          unsigned max_index,
 123                          unsigned mode, unsigned start, unsigned count)
 124 {
 125    struct cell_context *cell = cell_context(pipe);
 126    struct pipe_draw_info info;
 127    struct pipe_index_buffer saved_ib, ib;
 128
 129    util_draw_init_info(&info);
 130    info.mode = mode;
 131    info.start = start;
 132    info.count = count;
 133    info.index_bias = indexBias;
 134    info.min_index = min_index;
 135    info.max_index = max_index;
 136
 137    if (indexBuffer) {
 138       info.indexed = TRUE;
 139       saved_ib = cell->index_buffer;
 140
 141       ib.buffer = indexBuffer;
 142       ib.offset = 0;
 143       ib.index_size = indexSize;
 144       pipe->set_index_buffer(pipe, &ib);
 145    }
 146
 147    cell_draw_vbo(pipe, &info);
 148
 149    if (indexBuffer)
 150       pipe->set_index_buffer(pipe, &saved_ib);
 151 }
 152
 153
 154 static void
 155 cell_draw_elements(struct pipe_context *pipe,
 156                    struct pipe_resource *indexBuffer,
 157                    unsigned indexSize, int indexBias,
 158                    unsigned mode, unsigned start, unsigned count)
 159 {
 160    cell_draw_range_elements( pipe, indexBuffer,
 161                              indexSize, indexBias,
 162                              0, 0xffffffff,
 163                              mode, start, count );
 164 }
 165
 166
 167 static void
 168 cell_draw_arrays(struct pipe_context *pipe, unsigned mode,
 169                      unsigned start, unsigned count)
 170 {
 171    cell_draw_elements(pipe, NULL, 0, 0, mode, start, count);
 172 }
 173
 174
 175 void
 176 cell_init_draw_functions(struct cell_context *cell)
 177 {
 178    cell->pipe.draw_arrays = cell_draw_arrays;
 179    cell->pipe.draw_elements = cell_draw_elements;
 180    cell->pipe.draw_range_elements = cell_draw_range_elements;
 181    cell->pipe.draw_vbo = cell_draw_vbo;
 182 }
 183