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 "i915_context.h"
  29 #include "i915_winsys.h"
  30 #include "i915_state.h"
  31 #include "i915_batch.h"
  32 #include "i915_texture.h"
  33 #include "i915_reg.h"
  34
  35 #include "pipe/draw/draw_context.h"
  36 #include "pipe/p_defines.h"
  37 #include "pipe/p_winsys.h"
  38 #include "pipe/p_util.h"
  39
  40
  41 /**
  42  * Query format support.
  43  * If we find texture and drawable support differs, add a selector
  44  * parameter or another function.
  45  */
  46 static boolean
  47 i915_is_format_supported( struct pipe_context *pipe,
  48                           enum pipe_format format )
  49 {
  50 #if 0
  51    /* XXX: This is broken -- rewrite if still needed. */
  52    static const unsigned tex_supported[] = {
  53       PIPE_FORMAT_R8G8B8A8_UNORM,
  54       PIPE_FORMAT_A8R8G8B8_UNORM,
  55       PIPE_FORMAT_R5G6B5_UNORM,
  56       PIPE_FORMAT_U_L8,
  57       PIPE_FORMAT_U_A8,
  58       PIPE_FORMAT_U_I8,
  59       PIPE_FORMAT_U_L8_A8,
  60       PIPE_FORMAT_YCBCR,
  61       PIPE_FORMAT_YCBCR_REV,
  62       PIPE_FORMAT_S8Z24_UNORM,
  63    };
  64
  65
  66    /* Actually a lot more than this - add later:
  67     */
  68    static const unsigned render_supported[] = {
  69       PIPE_FORMAT_A8R8G8B8_UNORM,
  70       PIPE_FORMAT_R5G6B5_UNORM,
  71    };
  72
  73    /*
  74     */
  75    static const unsigned z_stencil_supported[] = {
  76       PIPE_FORMAT_Z16_UNORM,
  77       PIPE_FORMAT_Z32_UNORM,
  78       PIPE_FORMAT_S8Z24_UNORM,
  79    };
  80
  81    switch (type) {
  82    case PIPE_RENDER_FORMAT:
  83       *numFormats = Elements(render_supported);
  84       return render_supported;
  85
  86    case PIPE_TEX_FORMAT:
  87       *numFormats = Elements(tex_supported);
  88       return render_supported;
  89
  90    case PIPE_Z_STENCIL_FORMAT:
  91       *numFormats = Elements(render_supported);
  92       return render_supported;
  93
  94    default:
  95       *numFormats = 0;
  96       return NULL;
  97    }
  98 #else
  99    switch( format ) {
 100    case PIPE_FORMAT_A8R8G8B8_UNORM:
 101    case PIPE_FORMAT_R5G6B5_UNORM:
 102    case PIPE_FORMAT_S8Z24_UNORM:
 103       return TRUE;
 104    default:
 105       return FALSE;
 106    };
 107 #endif
 108 }
 109
 110
 111 static int
 112 i915_get_param(struct pipe_context *pipe, int param)
 113 {
 114    switch (param) {
 115    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 116       return 8;
 117    case PIPE_CAP_NPOT_TEXTURES:
 118       return 1;
 119    case PIPE_CAP_TWO_SIDED_STENCIL:
 120       return 1;
 121    case PIPE_CAP_GLSL:
 122       return 0;
 123    case PIPE_CAP_S3TC:
 124       return 0;
 125    case PIPE_CAP_ANISOTROPIC_FILTER:
 126       return 0;
 127    case PIPE_CAP_POINT_SPRITE:
 128       return 0;
 129    case PIPE_CAP_MAX_RENDER_TARGETS:
 130       return 1;
 131    case PIPE_CAP_OCCLUSION_QUERY:
 132       return 0;
 133    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 134       return 1;
 135    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 136       return 11; /* max 1024x1024 */
 137    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 138       return 8;  /* max 128x128x128 */
 139    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 140       return 11; /* max 1024x1024 */
 141    default:
 142       return 0;
 143    }
 144 }
 145
 146
 147 static float
 148 i915_get_paramf(struct pipe_context *pipe, int param)
 149 {
 150    switch (param) {
 151    case PIPE_CAP_MAX_LINE_WIDTH:
 152       /* fall-through */
 153    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 154       return 7.5;
 155
 156    case PIPE_CAP_MAX_POINT_WIDTH:
 157       /* fall-through */
 158    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 159       return 255.0;
 160
 161    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 162       return 4.0;
 163
 164    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 165       return 16.0;
 166
 167    default:
 168       return 0;
 169    }
 170 }
 171
 172
 173 static void i915_destroy( struct pipe_context *pipe )
 174 {
 175    struct i915_context *i915 = i915_context( pipe );
 176
 177    draw_destroy( i915->draw );
 178
 179    FREE( i915 );
 180 }
 181
 182
 183
 184 static void
 185 i915_begin_query(struct pipe_context *pipe, struct pipe_query_object *q)
 186 {
 187    /* should never be called */
 188    assert(0);
 189 }
 190
 191
 192 static void
 193 i915_end_query(struct pipe_context *pipe, struct pipe_query_object *q)
 194 {
 195    /* should never be called */
 196    assert(0);
 197 }
 198
 199
 200 static boolean
 201 i915_draw_elements( struct pipe_context *pipe,
 202                     struct pipe_buffer_handle *indexBuffer,
 203                     unsigned indexSize,
 204                     unsigned prim, unsigned start, unsigned count)
 205 {
 206    struct i915_context *i915 = i915_context( pipe );
 207    struct draw_context *draw = i915->draw;
 208    unsigned i;
 209
 210    if (i915->dirty)
 211       i915_update_derived( i915 );
 212
 213    /*
 214     * Map vertex buffers
 215     */
 216    for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
 217       if (i915->vertex_buffer[i].buffer) {
 218          void *buf
 219             = pipe->winsys->buffer_map(pipe->winsys,
 220                                        i915->vertex_buffer[i].buffer,
 221                                        PIPE_BUFFER_FLAG_READ);
 222          draw_set_mapped_vertex_buffer(draw, i, buf);
 223       }
 224    }
 225    /* Map index buffer, if present */
 226    if (indexBuffer) {
 227       void *mapped_indexes
 228          = pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
 229                                     PIPE_BUFFER_FLAG_READ);
 230       draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
 231    }
 232    else {
 233       /* no index/element buffer */
 234       draw_set_mapped_element_buffer(draw, 0, NULL);
 235    }
 236
 237    /* Map feedback buffers if enabled */
 238    if (i915->feedback.enabled) {
 239       const uint n = i915->feedback.interleaved ? 1 : i915->feedback.num_attribs;
 240       for (i = 0; i < n; i++) {
 241          void *ptr = pipe->winsys->buffer_map(pipe->winsys,
 242                                               i915->feedback_buffer[i].buffer,
 243                                               PIPE_BUFFER_FLAG_WRITE);
 244          draw_set_mapped_feedback_buffer(draw, i, ptr,
 245                                          i915->feedback_buffer[i].size);
 246       }
 247    }
 248
 249
 250    draw_set_mapped_constant_buffer(draw,
 251                                 i915->current.constants[PIPE_SHADER_VERTEX]);
 252
 253    /* draw! */
 254    draw_arrays(i915->draw, prim, start, count);
 255
 256    /*
 257     * unmap vertex/index buffers
 258     */
 259    for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
 260       if (i915->vertex_buffer[i].buffer) {
 261          pipe->winsys->buffer_unmap(pipe->winsys, i915->vertex_buffer[i].buffer);
 262          draw_set_mapped_vertex_buffer(draw, i, NULL);
 263       }
 264    }
 265    if (indexBuffer) {
 266       pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
 267       draw_set_mapped_element_buffer(draw, 0, NULL);
 268    }
 269
 270    /* Unmap feedback buffers if enabled */
 271    if (i915->feedback.enabled) {
 272       const uint n = i915->feedback.interleaved ? 1 : i915->feedback.num_attribs;
 273       for (i = 0; i < n; i++) {
 274          pipe->winsys->buffer_unmap(pipe->winsys,
 275                                     i915->feedback_buffer[i].buffer);
 276          draw_set_mapped_feedback_buffer(draw, i, NULL, 0);
 277       }
 278    }
 279
 280    return TRUE;
 281 }
 282
 283
 284 static boolean i915_draw_arrays( struct pipe_context *pipe,
 285                                  unsigned prim, unsigned start, unsigned count)
 286 {
 287    return i915_draw_elements(pipe, NULL, 0, prim, start, count);
 288 }
 289
 290
 291
 292 struct pipe_context *i915_create( struct pipe_winsys *pipe_winsys,
 293                                   struct i915_winsys *i915_winsys,
 294                                   unsigned pci_id )
 295 {
 296    struct i915_context *i915;
 297    unsigned is_i945 = 0;
 298
 299    switch (pci_id) {
 300    case PCI_CHIP_I915_G:
 301    case PCI_CHIP_I915_GM:
 302       break;
 303
 304    case PCI_CHIP_I945_G:
 305    case PCI_CHIP_I945_GM:
 306    case PCI_CHIP_I945_GME:
 307    case PCI_CHIP_G33_G:
 308    case PCI_CHIP_Q33_G:
 309    case PCI_CHIP_Q35_G:
 310       is_i945 = 1;
 311       break;
 312
 313    default:
 314       pipe_winsys->printf(pipe_winsys,
 315                           "%s: unknown pci id 0x%x, cannot create context\n",
 316                           __FUNCTION__, pci_id);
 317       return NULL;
 318    }
 319
 320    i915 = CALLOC_STRUCT(i915_context);
 321    if (i915 == NULL)
 322       return NULL;
 323
 324    i915->winsys = i915_winsys;
 325    i915->pipe.winsys = pipe_winsys;
 326
 327    i915->pipe.destroy = i915_destroy;
 328    i915->pipe.is_format_supported = i915_is_format_supported;
 329    i915->pipe.get_param = i915_get_param;
 330    i915->pipe.get_paramf = i915_get_paramf;
 331
 332    i915->pipe.clear = i915_clear;
 333
 334    i915->pipe.begin_query = i915_begin_query;
 335    i915->pipe.end_query = i915_end_query;
 336
 337    i915->pipe.draw_arrays = i915_draw_arrays;
 338    i915->pipe.draw_elements = i915_draw_elements;
 339
 340    /*
 341     * Create drawing context and plug our rendering stage into it.
 342     */
 343    i915->draw = draw_create();
 344    assert(i915->draw);
 345    if (GETENV("I915_VBUF")) {
 346       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 347    }
 348    else {
 349       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 350    }
 351
 352    i915_init_surface_functions(i915);
 353    i915_init_state_functions(i915);
 354    i915_init_flush_functions(i915);
 355    i915_init_string_functions(i915);
 356
 357    i915->pci_id = pci_id;
 358    i915->flags.is_i945 = is_i945;
 359
 360    i915->pipe.texture_create = i915_texture_create;
 361    i915->pipe.texture_release = i915_texture_release;
 362
 363    i915->dirty = ~0;
 364    i915->hardware_dirty = ~0;
 365
 366    /* Batch stream debugging is a bit hacked up at the moment:
 367     */
 368    i915->batch_start = NULL;
 369
 370    /*
 371     * XXX we could plug GL selection/feedback into the drawing pipeline
 372     * by specifying a different setup/render stage.
 373     */
 374
 375    return &i915->pipe;
 376 }
 377