src/mesa/pipe/i915simple/i915_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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 //#include "main/imports.h"     /* CALLOC */
  29 #include "i915_context.h"
  30 #include "i915_winsys.h"
  31 #include "i915_state.h"
  32 #include "i915_batch.h"
  33 #include "i915_tex_layout.h"
  34 #include "i915_reg.h"
  35
  36 #include "pipe/draw/draw_context.h"
  37 #include "pipe/p_defines.h"
  38 #include "pipe/p_winsys.h"
  39 #include "pipe/p_util.h"
  40
  41
  42 /**
  43  * Return list of supported surface/texture formats.
  44  * If we find texture and drawable support differs, add a selector
  45  * parameter or another function.
  46  */
  47 static const unsigned *
  48 i915_supported_formats(struct pipe_context *pipe,
  49 //                         unsigned type,
  50                            unsigned *numFormats)
  51 {
  52 #if 0
  53    static const unsigned tex_supported[] = {
  54       PIPE_FORMAT_U_R8_G8_B8_A8,
  55       PIPE_FORMAT_U_A8_R8_G8_B8,
  56       PIPE_FORMAT_U_R5_G6_B5,
  57       PIPE_FORMAT_U_L8,
  58       PIPE_FORMAT_U_A8,
  59       PIPE_FORMAT_U_I8,
  60       PIPE_FORMAT_U_L8_A8,
  61       PIPE_FORMAT_YCBCR,
  62       PIPE_FORMAT_YCBCR_REV,
  63       PIPE_FORMAT_S8_Z24,
  64    };
  65
  66
  67    /* Actually a lot more than this - add later:
  68     */
  69    static const unsigned render_supported[] = {
  70       PIPE_FORMAT_U_A8_R8_G8_B8,
  71       PIPE_FORMAT_U_R5_G6_B5,
  72    };
  73
  74    /*
  75     */
  76    static const unsigned z_stencil_supported[] = {
  77       PIPE_FORMAT_U_Z16,
  78       PIPE_FORMAT_U_Z32,
  79       PIPE_FORMAT_S8_Z24,
  80    };
  81
  82    switch (type) {
  83    case PIPE_RENDER_FORMAT:
  84       *numFormats = Elements(render_supported);
  85       return render_supported;
  86
  87    case PIPE_TEX_FORMAT:
  88       *numFormats = Elements(tex_supported);
  89       return render_supported;
  90
  91    case PIPE_Z_STENCIL_FORMAT:
  92       *numFormats = Elements(render_supported);
  93       return render_supported;
  94
  95    default:
  96       *numFormats = 0;
  97       return NULL;
  98    }
  99 #else
 100    static const unsigned render_supported[] = {
 101       PIPE_FORMAT_U_A8_R8_G8_B8,
 102       PIPE_FORMAT_U_R5_G6_B5,
 103       PIPE_FORMAT_S8_Z24,
 104    };
 105    *numFormats = 3;
 106    return render_supported;
 107 #endif
 108 }
 109
 110
 111 /**
 112  * We might want to return max texture levels instead...
 113  */
 114 static void
 115 i915_max_texture_size(struct pipe_context *pipe, unsigned textureType,
 116                       unsigned *maxWidth, unsigned *maxHeight, unsigned *maxDepth)
 117 {
 118    switch (textureType) {
 119    case PIPE_TEXTURE_1D:
 120       *maxWidth = 2048;
 121       break;
 122    case PIPE_TEXTURE_2D:
 123       *maxWidth =
 124       *maxHeight = 2048;
 125       break;
 126    case PIPE_TEXTURE_3D:
 127       *maxWidth =
 128       *maxHeight =
 129       *maxDepth = 256;
 130       break;
 131    case PIPE_TEXTURE_CUBE:
 132       *maxWidth =
 133       *maxHeight = 2048;
 134       break;
 135    default:
 136       assert(0);
 137    }
 138 }
 139
 140
 141 static void i915_destroy( struct pipe_context *pipe )
 142 {
 143    struct i915_context *i915 = i915_context( pipe );
 144
 145    draw_destroy( i915->draw );
 146
 147    free( i915 );
 148 }
 149
 150
 151
 152 static void
 153 i915_begin_query(struct pipe_context *pipe, struct pipe_query_object *q)
 154 {
 155    /* should never be called */
 156    assert(0);
 157 }
 158
 159
 160 static void
 161 i915_end_query(struct pipe_context *pipe, struct pipe_query_object *q)
 162 {
 163    /* should never be called */
 164    assert(0);
 165 }
 166
 167
 168 static boolean i915_draw_elements( struct pipe_context *pipe,
 169                                 struct pipe_buffer_handle *indexBuffer,
 170                                 unsigned indexSize,
 171                                 unsigned prim, unsigned start, unsigned count)
 172 {
 173    struct i915_context *i915 = i915_context( pipe );
 174    struct draw_context *draw = i915->draw;
 175    unsigned i;
 176
 177    if (i915->dirty)
 178       i915_update_derived( i915 );
 179
 180
 181   /*
 182     * Map vertex buffers
 183     */
 184    for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
 185       if (i915->vertex_buffer[i].buffer) {
 186          void *buf
 187             = pipe->winsys->buffer_map(pipe->winsys,
 188                                        i915->vertex_buffer[i].buffer,
 189                                        PIPE_BUFFER_FLAG_READ);
 190          draw_set_mapped_vertex_buffer(draw, i, buf);
 191       }
 192    }
 193    /* Map index buffer, if present */
 194    if (indexBuffer) {
 195       void *mapped_indexes
 196          = pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
 197                                     PIPE_BUFFER_FLAG_READ);
 198       draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
 199    }
 200    else {
 201       /* no index/element buffer */
 202       draw_set_mapped_element_buffer(draw, 0, NULL);
 203    }
 204
 205    draw_set_mapped_constant_buffer(draw,
 206                                 i915->current.constants[PIPE_SHADER_VERTEX]);
 207
 208    /* draw! */
 209    draw_arrays(i915->draw, prim, start, count);
 210
 211    /*
 212     * unmap vertex/index buffers
 213     */
 214    for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
 215       if (i915->vertex_buffer[i].buffer) {
 216          pipe->winsys->buffer_unmap(pipe->winsys, i915->vertex_buffer[i].buffer);
 217          draw_set_mapped_vertex_buffer(draw, i, NULL);
 218       }
 219    }
 220    if (indexBuffer) {
 221       pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
 222       draw_set_mapped_element_buffer(draw, 0, NULL);
 223    }
 224
 225    return TRUE;
 226 }
 227
 228
 229 static boolean i915_draw_arrays( struct pipe_context *pipe,
 230                                  unsigned prim, unsigned start, unsigned count)
 231 {
 232    return i915_draw_elements(pipe, NULL, 0, prim, start, count);
 233 }
 234
 235
 236
 237 struct pipe_context *i915_create( struct pipe_winsys *pipe_winsys,
 238                                   struct i915_winsys *i915_winsys,
 239                                   unsigned pci_id )
 240 {
 241    struct i915_context *i915;
 242    unsigned is_i945 = 0;
 243
 244    switch (pci_id) {
 245    case PCI_CHIP_I915_G:
 246    case PCI_CHIP_I915_GM:
 247       break;
 248
 249    case PCI_CHIP_I945_G:
 250    case PCI_CHIP_I945_GM:
 251    case PCI_CHIP_I945_GME:
 252    case PCI_CHIP_G33_G:
 253    case PCI_CHIP_Q33_G:
 254    case PCI_CHIP_Q35_G:
 255       is_i945 = 1;
 256       break;
 257
 258    default:
 259       pipe_winsys->printf(pipe_winsys,
 260                           "%s: unknown pci id 0x%x, cannot create context\n",
 261                           __FUNCTION__, pci_id);
 262       return NULL;
 263    }
 264
 265    i915 = CALLOC_STRUCT(i915_context);
 266    if (i915 == NULL)
 267       return NULL;
 268
 269    i915->winsys = i915_winsys;
 270    i915->pipe.winsys = pipe_winsys;
 271
 272    i915->pipe.destroy = i915_destroy;
 273    i915->pipe.supported_formats = i915_supported_formats;
 274    i915->pipe.max_texture_size = i915_max_texture_size;
 275    i915->pipe.clear = i915_clear;
 276
 277    i915->pipe.begin_query = i915_begin_query;
 278    i915->pipe.end_query = i915_end_query;
 279
 280    i915->pipe.draw_arrays = i915_draw_arrays;
 281    i915->pipe.draw_elements = i915_draw_elements;
 282
 283    /*
 284     * Create drawing context and plug our rendering stage into it.
 285     */
 286    i915->draw = draw_create();
 287    assert(i915->draw);
 288    draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 289
 290    i915_init_region_functions(i915);
 291    i915_init_surface_functions(i915);
 292    i915_init_state_functions(i915);
 293    i915_init_flush_functions(i915);
 294    i915_init_string_functions(i915);
 295
 296    i915->pci_id = pci_id;
 297    i915->flags.is_i945 = is_i945;
 298
 299    if (i915->flags.is_i945)
 300       i915->pipe.mipmap_tree_layout = i945_miptree_layout;
 301    else
 302       i915->pipe.mipmap_tree_layout = i945_miptree_layout;
 303
 304
 305    i915->dirty = ~0;
 306    i915->hardware_dirty = ~0;
 307
 308    /* Batch stream debugging is a bit hacked up at the moment:
 309     */
 310    i915->batch_start = BEGIN_BATCH(0, 0);
 311
 312    /*
 313     * XXX we could plug GL selection/feedback into the drawing pipeline
 314     * by specifying a different setup/render stage.
 315     */
 316
 317    return &i915->pipe;
 318 }
 319