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
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  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
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  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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  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_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
  60 {
  61    struct cell_context *cell = cell_context(pipe);
  62    struct draw_context *draw = cell->draw;
  63    void *mapped_indices = NULL;
  64    unsigned i;
  65
  66    if (cell->dirty)
  67       cell_update_derived( cell );
  68
  69 #if 0
  70    cell_map_surfaces(cell);
  71 #endif
  72
  73    /*
  74     * Map vertex buffers
  75     */
  76    for (i = 0; i < cell->num_vertex_buffers; i++) {
  77       void *buf = cell_resource(cell->vertex_buffer[i].buffer)->data;
  78       draw_set_mapped_vertex_buffer(draw, i, buf);
  79    }
  80    /* Map index buffer, if present */
  81    if (info->indexed && cell->index_buffer.buffer)
  82       mapped_indices = cell_resource(cell->index_buffer.buffer)->data;
  83
  84    draw_set_mapped_index_buffer(draw, mapped_indices);
  85
  86    /* draw! */
  87    draw_vbo(draw, info);
  88
  89    /*
  90     * unmap vertex/index buffers - will cause draw module to flush
  91     */
  92    for (i = 0; i < cell->num_vertex_buffers; i++) {
  93       draw_set_mapped_vertex_buffer(draw, i, NULL);
  94    }
  95    if (mapped_indices) {
  96       draw_set_mapped_index_buffer(draw, NULL);
  97    }
  98
  99    /*
 100     * TODO: Flush only when a user vertex/index buffer is present
 101     * (or even better, modify draw module to do this
 102     * internally when this condition is seen?)
 103     */
 104    draw_flush(draw);
 105 }
 106
 107
 108 void
 109 cell_init_draw_functions(struct cell_context *cell)
 110 {
 111    cell->pipe.draw_vbo = cell_draw_vbo;
 112 }
 113