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 #include "pipe/p_inlines.h"
  38
  39 #include "cell_context.h"
  40 #include "cell_draw_arrays.h"
  41 #include "cell_state.h"
  42 #include "cell_flush.h"
  43
  44 #include "draw/draw_context.h"
  45
  46
  47
  48 static void
  49 cell_map_constant_buffers(struct cell_context *sp)
  50 {
  51    struct pipe_winsys *ws = sp->pipe.winsys;
  52    uint i;
  53    for (i = 0; i < 2; i++) {
  54       if (sp->constants[i].size) {
  55          sp->mapped_constants[i] = ws->buffer_map(ws, sp->constants[i].buffer,
  56                                                   PIPE_BUFFER_USAGE_CPU_READ);
  57          cell_flush_buffer_range(sp, sp->mapped_constants[i],
  58                                  sp->constants[i].buffer->size);
  59       }
  60    }
  61
  62    draw_set_mapped_constant_buffer(sp->draw,
  63                                    sp->mapped_constants[PIPE_SHADER_VERTEX],
  64                                    sp->constants[PIPE_SHADER_VERTEX].size);
  65 }
  66
  67 static void
  68 cell_unmap_constant_buffers(struct cell_context *sp)
  69 {
  70    struct pipe_winsys *ws = sp->pipe.winsys;
  71    uint i;
  72    for (i = 0; i < 2; i++) {
  73       if (sp->constants[i].size)
  74          ws->buffer_unmap(ws, sp->constants[i].buffer);
  75       sp->mapped_constants[i] = NULL;
  76    }
  77 }
  78
  79
  80
  81 /**
  82  * Draw vertex arrays, with optional indexing.
  83  * Basically, map the vertex buffers (and drawing surfaces), then hand off
  84  * the drawing to the 'draw' module.
  85  *
  86  * XXX should the element buffer be specified/bound with a separate function?
  87  */
  88 static boolean
  89 cell_draw_range_elements(struct pipe_context *pipe,
  90                          struct pipe_buffer *indexBuffer,
  91                          unsigned indexSize,
  92                          unsigned min_index,
  93                          unsigned max_index,
  94                          unsigned mode, unsigned start, unsigned count)
  95 {
  96    struct cell_context *sp = cell_context(pipe);
  97    struct draw_context *draw = sp->draw;
  98    unsigned i;
  99
 100    if (sp->dirty)
 101       cell_update_derived( sp );
 102
 103 #if 0
 104    cell_map_surfaces(sp);
 105 #endif
 106    cell_map_constant_buffers(sp);
 107
 108    /*
 109     * Map vertex buffers
 110     */
 111    for (i = 0; i < sp->num_vertex_buffers; i++) {
 112       void *buf = pipe_buffer_map(pipe->screen,
 113                                            sp->vertex_buffer[i].buffer,
 114                                            PIPE_BUFFER_USAGE_CPU_READ);
 115       cell_flush_buffer_range(sp, buf, sp->vertex_buffer[i].buffer->size);
 116       draw_set_mapped_vertex_buffer(draw, i, buf);
 117    }
 118    /* Map index buffer, if present */
 119    if (indexBuffer) {
 120       void *mapped_indexes = pipe_buffer_map(pipe->screen,
 121                                                       indexBuffer,
 122                                                       PIPE_BUFFER_USAGE_CPU_READ);
 123       draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
 124    }
 125    else {
 126       /* no index/element buffer */
 127       draw_set_mapped_element_buffer(draw, 0, NULL);
 128    }
 129
 130
 131    /* draw! */
 132    draw_arrays(draw, mode, start, count);
 133
 134    /*
 135     * unmap vertex/index buffers - will cause draw module to flush
 136     */
 137    for (i = 0; i < sp->num_vertex_buffers; i++) {
 138       draw_set_mapped_vertex_buffer(draw, i, NULL);
 139       pipe_buffer_unmap(pipe->screen, sp->vertex_buffer[i].buffer);
 140    }
 141    if (indexBuffer) {
 142       draw_set_mapped_element_buffer(draw, 0, NULL);
 143       pipe_buffer_unmap(pipe->screen, indexBuffer);
 144    }
 145
 146    /* Note: leave drawing surfaces mapped */
 147    cell_unmap_constant_buffers(sp);
 148
 149    return TRUE;
 150 }
 151
 152
 153 static boolean
 154 cell_draw_elements(struct pipe_context *pipe,
 155                    struct pipe_buffer *indexBuffer,
 156                    unsigned indexSize,
 157                    unsigned mode, unsigned start, unsigned count)
 158 {
 159    return cell_draw_range_elements( pipe, indexBuffer,
 160                                     indexSize,
 161                                     0, 0xffffffff,
 162                                     mode, start, count );
 163 }
 164
 165
 166 static boolean
 167 cell_draw_arrays(struct pipe_context *pipe, unsigned mode,
 168                      unsigned start, unsigned count)
 169 {
 170    return cell_draw_elements(pipe, NULL, 0, mode, start, count);
 171 }
 172
 173
 174 static void
 175 cell_set_edgeflags(struct pipe_context *pipe, const unsigned *edgeflags)
 176 {
 177    struct cell_context *cell = cell_context(pipe);
 178    draw_set_edgeflags(cell->draw, edgeflags);
 179 }
 180
 181
 182
 183 void
 184 cell_init_draw_functions(struct cell_context *cell)
 185 {
 186    cell->pipe.draw_arrays = cell_draw_arrays;
 187    cell->pipe.draw_elements = cell_draw_elements;
 188    cell->pipe.draw_range_elements = cell_draw_range_elements;
 189    cell->pipe.set_edgeflags = cell_set_edgeflags;
 190 }
 191