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
  38 #include "cell_context.h"
  39 #include "cell_draw_arrays.h"
  40 #include "cell_state.h"
  41 #include "cell_flush.h"
  42 #include "cell_texture.h"
  43
  44 #include "draw/draw_context.h"
  45
  46
  47
  48
  49
  50
  51 /**
  52  * Draw vertex arrays, with optional indexing.
  53  * Basically, map the vertex buffers (and drawing surfaces), then hand off
  54  * the drawing to the 'draw' module.
  55  *
  56  * XXX should the element buffer be specified/bound with a separate function?
  57  */
  58 static void
  59 cell_draw_range_elements(struct pipe_context *pipe,
  60                          struct pipe_resource *indexBuffer,
  61                          unsigned indexSize,
  62                          int indexBias,
  63                          unsigned min_index,
  64                          unsigned max_index,
  65                          unsigned mode, unsigned start, unsigned count)
  66 {
  67    struct cell_context *cell = cell_context(pipe);
  68    struct draw_context *draw = cell->draw;
  69    unsigned i;
  70
  71    if (cell->dirty)
  72       cell_update_derived( cell );
  73
  74 #if 0
  75    cell_map_surfaces(cell);
  76 #endif
  77
  78    /*
  79     * Map vertex buffers
  80     */
  81    for (i = 0; i < cell->num_vertex_buffers; i++) {
  82       void *buf = cell_resource(cell->vertex_buffer[i].buffer)->data;
  83       draw_set_mapped_vertex_buffer(draw, i, buf);
  84    }
  85    /* Map index buffer, if present */
  86    if (indexBuffer) {
  87       void *mapped_indexes = cell_resource(indexBuffer)->data;
  88       draw_set_mapped_element_buffer(draw, indexSize, indexBias, mapped_indexes);
  89    }
  90    else {
  91       /* no index/element buffer */
  92       draw_set_mapped_element_buffer(draw, 0, 0, NULL);
  93    }
  94
  95
  96    /* draw! */
  97    draw_arrays(draw, mode, start, count);
  98
  99    /*
 100     * unmap vertex/index buffers - will cause draw module to flush
 101     */
 102    for (i = 0; i < cell->num_vertex_buffers; i++) {
 103       draw_set_mapped_vertex_buffer(draw, i, NULL);
 104    }
 105    if (indexBuffer) {
 106       draw_set_mapped_element_buffer(draw, 0, 0, NULL);
 107    }
 108
 109    /*
 110     * TODO: Flush only when a user vertex/index buffer is present
 111     * (or even better, modify draw module to do this
 112     * internally when this condition is seen?)
 113     */
 114    draw_flush(draw);
 115 }
 116
 117
 118 static void
 119 cell_draw_elements(struct pipe_context *pipe,
 120                    struct pipe_resource *indexBuffer,
 121                    unsigned indexSize, int indexBias,
 122                    unsigned mode, unsigned start, unsigned count)
 123 {
 124    cell_draw_range_elements( pipe, indexBuffer,
 125                              indexSize, indexBias,
 126                              0, 0xffffffff,
 127                              mode, start, count );
 128 }
 129
 130
 131 static void
 132 cell_draw_arrays(struct pipe_context *pipe, unsigned mode,
 133                      unsigned start, unsigned count)
 134 {
 135    cell_draw_elements(pipe, NULL, 0, 0, mode, start, count);
 136 }
 137
 138
 139 void
 140 cell_init_draw_functions(struct cell_context *cell)
 141 {
 142    cell->pipe.draw_arrays = cell_draw_arrays;
 143    cell->pipe.draw_elements = cell_draw_elements;
 144    cell->pipe.draw_range_elements = cell_draw_range_elements;
 145 }
 146