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
  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] && sp->constants[i]->size) {
  54          sp->mapped_constants[i] = ws->buffer_map(ws, sp->constants[i],
  55                                                    PIPE_BUFFER_USAGE_CPU_READ);
  56          cell_flush_buffer_range(sp, sp->mapped_constants[i],
  57                                  sp->constants[i]->size);
  58       }
  59    }
  60
  61    draw_set_mapped_constant_buffer(sp->draw, PIPE_SHADER_VERTEX, 0,
  62                                    sp->mapped_constants[PIPE_SHADER_VERTEX],
  63                                    sp->constants[PIPE_SHADER_VERTEX]->size);
  64 }
  65
  66 static void
  67 cell_unmap_constant_buffers(struct cell_context *sp)
  68 {
  69    struct pipe_winsys *ws = sp->pipe.winsys;
  70    uint i;
  71    for (i = 0; i < 2; i++) {
  72       if (sp->constants[i] && sp->constants[i]->size)
  73          ws->buffer_unmap(ws, sp->constants[i]);
  74       sp->mapped_constants[i] = NULL;
  75    }
  76 }
  77
  78
  79
  80 /**
  81  * Draw vertex arrays, with optional indexing.
  82  * Basically, map the vertex buffers (and drawing surfaces), then hand off
  83  * the drawing to the 'draw' module.
  84  *
  85  * XXX should the element buffer be specified/bound with a separate function?
  86  */
  87 static void
  88 cell_draw_range_elements(struct pipe_context *pipe,
  89                          struct pipe_buffer *indexBuffer,
  90                          unsigned indexSize,
  91                          unsigned min_index,
  92                          unsigned max_index,
  93                          unsigned mode, unsigned start, unsigned count)
  94 {
  95    struct cell_context *sp = cell_context(pipe);
  96    struct draw_context *draw = sp->draw;
  97    unsigned i;
  98
  99    if (sp->dirty)
 100       cell_update_derived( sp );
 101
 102 #if 0
 103    cell_map_surfaces(sp);
 104 #endif
 105    cell_map_constant_buffers(sp);
 106
 107    /*
 108     * Map vertex buffers
 109     */
 110    for (i = 0; i < sp->num_vertex_buffers; i++) {
 111       void *buf = pipe_buffer_map(pipe->screen,
 112                                            sp->vertex_buffer[i].buffer,
 113                                            PIPE_BUFFER_USAGE_CPU_READ);
 114       cell_flush_buffer_range(sp, buf, sp->vertex_buffer[i].buffer->size);
 115       draw_set_mapped_vertex_buffer(draw, i, buf);
 116    }
 117    /* Map index buffer, if present */
 118    if (indexBuffer) {
 119       void *mapped_indexes = pipe_buffer_map(pipe->screen,
 120                                                       indexBuffer,
 121                                                       PIPE_BUFFER_USAGE_CPU_READ);
 122       draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
 123    }
 124    else {
 125       /* no index/element buffer */
 126       draw_set_mapped_element_buffer(draw, 0, NULL);
 127    }
 128
 129
 130    /* draw! */
 131    draw_arrays(draw, mode, start, count);
 132
 133    /*
 134     * unmap vertex/index buffers - will cause draw module to flush
 135     */
 136    for (i = 0; i < sp->num_vertex_buffers; i++) {
 137       draw_set_mapped_vertex_buffer(draw, i, NULL);
 138       pipe_buffer_unmap(pipe->screen, sp->vertex_buffer[i].buffer);
 139    }
 140    if (indexBuffer) {
 141       draw_set_mapped_element_buffer(draw, 0, NULL);
 142       pipe_buffer_unmap(pipe->screen, indexBuffer);
 143    }
 144
 145    /* Note: leave drawing surfaces mapped */
 146    cell_unmap_constant_buffers(sp);
 147 }
 148
 149
 150 static void
 151 cell_draw_elements(struct pipe_context *pipe,
 152                    struct pipe_buffer *indexBuffer,
 153                    unsigned indexSize,
 154                    unsigned mode, unsigned start, unsigned count)
 155 {
 156    cell_draw_range_elements( pipe, indexBuffer,
 157                              indexSize,
 158                              0, 0xffffffff,
 159                              mode, start, count );
 160 }
 161
 162
 163 static void
 164 cell_draw_arrays(struct pipe_context *pipe, unsigned mode,
 165                      unsigned start, unsigned count)
 166 {
 167    cell_draw_elements(pipe, NULL, 0, mode, start, count);
 168 }
 169
 170
 171 void
 172 cell_init_draw_functions(struct cell_context *cell)
 173 {
 174    cell->pipe.draw_arrays = cell_draw_arrays;
 175    cell->pipe.draw_elements = cell_draw_elements;
 176    cell->pipe.draw_range_elements = cell_draw_range_elements;
 177 }
 178