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                           uint format )
  49 {
  50 #if 0
  51    /* XXX: This is broken -- rewrite if still needed. */
  52    static const unsigned tex_supported[] = {
  53       PIPE_FORMAT_U_R8_G8_B8_A8,
  54       PIPE_FORMAT_U_A8_R8_G8_B8,
  55       PIPE_FORMAT_U_R5_G6_B5,
  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_S8_Z24,
  63    };
  64
  65
  66    /* Actually a lot more than this - add later:
  67     */
  68    static const unsigned render_supported[] = {
  69       PIPE_FORMAT_U_A8_R8_G8_B8,
  70       PIPE_FORMAT_U_R5_G6_B5,
  71    };
  72
  73    /*
  74     */
  75    static const unsigned z_stencil_supported[] = {
  76       PIPE_FORMAT_U_Z16,
  77       PIPE_FORMAT_U_Z32,
  78       PIPE_FORMAT_S8_Z24,
  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_U_A8_R8_G8_B8:
 101    case PIPE_FORMAT_U_R5_G6_B5:
 102    case PIPE_FORMAT_S8_Z24:
 103       return TRUE;
 104    };
 105    return FALSE;
 106 #endif
 107 }
 108
 109
 110 static int
 111 i915_get_param(struct pipe_context *pipe, int param)
 112 {
 113    switch (param) {
 114    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 115       return 8;
 116    case PIPE_CAP_NPOT_TEXTURES:
 117       return 1;
 118    case PIPE_CAP_TWO_SIDED_STENCIL:
 119       return 1;
 120    case PIPE_CAP_GLSL:
 121       return 0;
 122    case PIPE_CAP_S3TC:
 123       return 0;
 124    case PIPE_CAP_ANISOTROPIC_FILTER:
 125       return 0;
 126    case PIPE_CAP_POINT_SPRITE:
 127       return 0;
 128    case PIPE_CAP_MAX_RENDER_TARGETS:
 129       return 1;
 130    case PIPE_CAP_OCCLUSION_QUERY:
 131       return 0;
 132    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 133       return 1;
 134    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 135       return 11; /* max 1024x1024 */
 136    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 137       return 8;  /* max 128x128x128 */
 138    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 139       return 11; /* max 1024x1024 */
 140    default:
 141       return 0;
 142    }
 143 }
 144
 145
 146 static float
 147 i915_get_paramf(struct pipe_context *pipe, int param)
 148 {
 149    switch (param) {
 150    case PIPE_CAP_MAX_LINE_WIDTH:
 151       /* fall-through */
 152    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 153       return 7.5;
 154
 155    case PIPE_CAP_MAX_POINT_WIDTH:
 156       /* fall-through */
 157    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 158       return 255.0;
 159
 160    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 161       return 4.0;
 162
 163    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 164       return 16.0;
 165
 166    default:
 167       return 0;
 168    }
 169 }
 170
 171
 172 static void i915_destroy( struct pipe_context *pipe )
 173 {
 174    struct i915_context *i915 = i915_context( pipe );
 175
 176    draw_destroy( i915->draw );
 177
 178    FREE( i915 );
 179 }
 180
 181
 182
 183 static void
 184 i915_begin_query(struct pipe_context *pipe, struct pipe_query_object *q)
 185 {
 186    /* should never be called */
 187    assert(0);
 188 }
 189
 190
 191 static void
 192 i915_end_query(struct pipe_context *pipe, struct pipe_query_object *q)
 193 {
 194    /* should never be called */
 195    assert(0);
 196 }
 197
 198
 199 static boolean
 200 i915_draw_elements( struct pipe_context *pipe,
 201                     struct pipe_buffer_handle *indexBuffer,
 202                     unsigned indexSize,
 203                     unsigned prim, unsigned start, unsigned count)
 204 {
 205    struct i915_context *i915 = i915_context( pipe );
 206    struct draw_context *draw = i915->draw;
 207    unsigned i;
 208
 209    if (i915->dirty)
 210       i915_update_derived( i915 );
 211
 212    /*
 213     * Map vertex buffers
 214     */
 215    for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
 216       if (i915->vertex_buffer[i].buffer) {
 217          void *buf
 218             = pipe->winsys->buffer_map(pipe->winsys,
 219                                        i915->vertex_buffer[i].buffer,
 220                                        PIPE_BUFFER_FLAG_READ);
 221          draw_set_mapped_vertex_buffer(draw, i, buf);
 222       }
 223    }
 224    /* Map index buffer, if present */
 225    if (indexBuffer) {
 226       void *mapped_indexes
 227          = pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
 228                                     PIPE_BUFFER_FLAG_READ);
 229       draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
 230    }
 231    else {
 232       /* no index/element buffer */
 233       draw_set_mapped_element_buffer(draw, 0, NULL);
 234    }
 235
 236    /* Map feedback buffers if enabled */
 237    if (i915->feedback.enabled) {
 238       const uint n = i915->feedback.interleaved ? 1 : i915->feedback.num_attribs;
 239       for (i = 0; i < n; i++) {
 240          void *ptr = pipe->winsys->buffer_map(pipe->winsys,
 241                                               i915->feedback_buffer[i].buffer,
 242                                               PIPE_BUFFER_FLAG_WRITE);
 243          draw_set_mapped_feedback_buffer(draw, i, ptr,
 244                                          i915->feedback_buffer[i].size);
 245       }
 246    }
 247
 248
 249    draw_set_mapped_constant_buffer(draw,
 250                                 i915->current.constants[PIPE_SHADER_VERTEX]);
 251
 252    /* draw! */
 253    draw_arrays(i915->draw, prim, start, count);
 254
 255    /*
 256     * unmap vertex/index buffers
 257     */
 258    for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
 259       if (i915->vertex_buffer[i].buffer) {
 260          pipe->winsys->buffer_unmap(pipe->winsys, i915->vertex_buffer[i].buffer);
 261          draw_set_mapped_vertex_buffer(draw, i, NULL);
 262       }
 263    }
 264    if (indexBuffer) {
 265       pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
 266       draw_set_mapped_element_buffer(draw, 0, NULL);
 267    }
 268
 269    /* Unmap feedback buffers if enabled */
 270    if (i915->feedback.enabled) {
 271       const uint n = i915->feedback.interleaved ? 1 : i915->feedback.num_attribs;
 272       for (i = 0; i < n; i++) {
 273          pipe->winsys->buffer_unmap(pipe->winsys,
 274                                     i915->feedback_buffer[i].buffer);
 275          draw_set_mapped_feedback_buffer(draw, i, NULL, 0);
 276       }
 277    }
 278
 279    return TRUE;
 280 }
 281
 282
 283 static boolean i915_draw_arrays( struct pipe_context *pipe,
 284                                  unsigned prim, unsigned start, unsigned count)
 285 {
 286    return i915_draw_elements(pipe, NULL, 0, prim, start, count);
 287 }
 288
 289
 290
 291 struct pipe_context *i915_create( struct pipe_winsys *pipe_winsys,
 292                                   struct i915_winsys *i915_winsys,
 293                                   unsigned pci_id )
 294 {
 295    struct i915_context *i915;
 296    unsigned is_i945 = 0;
 297
 298    switch (pci_id) {
 299    case PCI_CHIP_I915_G:
 300    case PCI_CHIP_I915_GM:
 301       break;
 302
 303    case PCI_CHIP_I945_G:
 304    case PCI_CHIP_I945_GM:
 305    case PCI_CHIP_I945_GME:
 306    case PCI_CHIP_G33_G:
 307    case PCI_CHIP_Q33_G:
 308    case PCI_CHIP_Q35_G:
 309       is_i945 = 1;
 310       break;
 311
 312    default:
 313       pipe_winsys->printf(pipe_winsys,
 314                           "%s: unknown pci id 0x%x, cannot create context\n",
 315                           __FUNCTION__, pci_id);
 316       return NULL;
 317    }
 318
 319    i915 = CALLOC_STRUCT(i915_context);
 320    if (i915 == NULL)
 321       return NULL;
 322
 323    i915->winsys = i915_winsys;
 324    i915->pipe.winsys = pipe_winsys;
 325
 326    i915->pipe.destroy = i915_destroy;
 327    i915->pipe.is_format_supported = i915_is_format_supported;
 328    i915->pipe.get_param = i915_get_param;
 329    i915->pipe.get_paramf = i915_get_paramf;
 330
 331    i915->pipe.clear = i915_clear;
 332
 333    i915->pipe.begin_query = i915_begin_query;
 334    i915->pipe.end_query = i915_end_query;
 335
 336    i915->pipe.draw_arrays = i915_draw_arrays;
 337    i915->pipe.draw_elements = i915_draw_elements;
 338
 339    /*
 340     * Create drawing context and plug our rendering stage into it.
 341     */
 342    i915->draw = draw_create();
 343    assert(i915->draw);
 344    if (GETENV("I915_VBUF")) {
 345       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 346    }
 347    else {
 348       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 349    }
 350
 351    i915_init_region_functions(i915);
 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