src/mesa/drivers/dri/unichrome/via_context.c

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file via_context.c
  27  *
  28  * \author John Sheng (presumably of either VIA Technologies or S3 Graphics)
  29  * \author Others at VIA Technologies?
  30  * \author Others at S3 Graphics?
  31  */
  32
  33 #include "main/glheader.h"
  34 #include "main/context.h"
  35 #include "main/matrix.h"
  36 #include "main/state.h"
  37 #include "main/simple_list.h"
  38 #include "main/extensions.h"
  39 #include "main/framebuffer.h"
  40 #include "main/renderbuffer.h"
  41
  42 #include "swrast/swrast.h"
  43 #include "swrast_setup/swrast_setup.h"
  44 #include "tnl/tnl.h"
  45 #include "vbo/vbo.h"
  46
  47 #include "tnl/t_pipeline.h"
  48
  49 #include "drivers/common/driverfuncs.h"
  50
  51 #include "via_screen.h"
  52 #include "via_dri.h"
  53
  54 #include "via_state.h"
  55 #include "via_tex.h"
  56 #include "via_span.h"
  57 #include "via_tris.h"
  58 #include "via_ioctl.h"
  59 #include "via_fb.h"
  60
  61 #include <stdio.h>
  62 #include "main/macros.h"
  63 #include "drirenderbuffer.h"
  64
  65 #define need_GL_ARB_point_parameters
  66 #define need_GL_EXT_fog_coord
  67 #define need_GL_EXT_secondary_color
  68 #include "extension_helper.h"
  69
  70 #define DRIVER_DATE     "20060710"
  71
  72 #include "vblank.h"
  73 #include "utils.h"
  74
  75 GLuint VIA_DEBUG = 0;
  76
  77 /**
  78  * Return various strings for \c glGetString.
  79  *
  80  * \sa glGetString
  81  */
  82 static const GLubyte *viaGetString(GLcontext *ctx, GLenum name)
  83 {
  84    static char buffer[128];
  85    unsigned   offset;
  86
  87
  88    switch (name) {
  89    case GL_VENDOR:
  90       return (GLubyte *)"VIA Technology";
  91
  92    case GL_RENDERER: {
  93       static const char * const chipset_names[] = {
  94          "UniChrome",
  95          "CastleRock (CLE266)",
  96          "UniChrome (KM400)",
  97          "UniChrome (K8M800)",
  98          "UniChrome (PM8x0/CN400)",
  99       };
 100       struct via_context *vmesa = VIA_CONTEXT(ctx);
 101       unsigned id = vmesa->viaScreen->deviceID;
 102
 103       offset = driGetRendererString( buffer,
 104                                      chipset_names[(id > VIA_PM800) ? 0 : id],
 105                                      DRIVER_DATE, 0 );
 106       return (GLubyte *)buffer;
 107    }
 108
 109    default:
 110       return NULL;
 111    }
 112 }
 113
 114
 115 /**
 116  * Calculate a width that satisfies the hardware's alignment requirements.
 117  * On the Unichrome hardware, each scanline must be aligned to a multiple of
 118  * 16 pixels.
 119  *
 120  * \param width  Minimum buffer width, in pixels.
 121  *
 122  * \returns A pixel width that meets the alignment requirements.
 123  */
 124 static INLINE unsigned
 125 buffer_align( unsigned width )
 126 {
 127     return (width + 0x0f) & ~0x0f;
 128 }
 129
 130
 131 static void
 132 viaDeleteRenderbuffer(struct gl_renderbuffer *rb)
 133 {
 134    /* Don't free() since we're contained in via_context struct. */
 135 }
 136
 137 static GLboolean
 138 viaRenderbufferStorage(GLcontext *ctx, struct gl_renderbuffer *rb,
 139                        GLenum internalFormat, GLuint width, GLuint height)
 140 {
 141    rb->Width = width;
 142    rb->Height = height;
 143    rb->InternalFormat = internalFormat;
 144    return GL_TRUE;
 145 }
 146
 147
 148 static void
 149 viaInitRenderbuffer(struct via_renderbuffer *vrb, GLenum format,
 150                     __DRIdrawablePrivate *dPriv)
 151 {
 152    const GLuint name = 0;
 153    struct gl_renderbuffer *rb = & vrb->Base;
 154
 155    vrb->dPriv = dPriv;
 156    _mesa_init_renderbuffer(rb, name);
 157
 158    /* Make sure we're using a null-valued GetPointer routine */
 159    assert(rb->GetPointer(NULL, rb, 0, 0) == NULL);
 160
 161    rb->InternalFormat = format;
 162
 163    if (format == GL_RGBA) {
 164       /* Color */
 165       rb->_BaseFormat = GL_RGBA;
 166       rb->DataType = GL_UNSIGNED_BYTE;
 167    }
 168    else if (format == GL_DEPTH_COMPONENT16) {
 169       /* Depth */
 170       rb->_BaseFormat = GL_DEPTH_COMPONENT;
 171       /* we always Get/Put 32-bit Z values */
 172       rb->DataType = GL_UNSIGNED_INT;
 173    }
 174    else if (format == GL_DEPTH_COMPONENT24) {
 175       /* Depth */
 176       rb->_BaseFormat = GL_DEPTH_COMPONENT;
 177       /* we always Get/Put 32-bit Z values */
 178       rb->DataType = GL_UNSIGNED_INT;
 179    }
 180    else {
 181       /* Stencil */
 182       ASSERT(format == GL_STENCIL_INDEX8_EXT);
 183       rb->_BaseFormat = GL_STENCIL_INDEX;
 184       rb->DataType = GL_UNSIGNED_BYTE;
 185    }
 186
 187    rb->Delete = viaDeleteRenderbuffer;
 188    rb->AllocStorage = viaRenderbufferStorage;
 189 }
 190
 191
 192 /**
 193  * Calculate the framebuffer parameters for all buffers (front, back, depth,
 194  * and stencil) associated with the specified context.
 195  *
 196  * \warning
 197  * This function also calls \c AllocateBuffer to actually allocate the
 198  * buffers.
 199  *
 200  * \sa AllocateBuffer
 201  */
 202 static GLboolean
 203 calculate_buffer_parameters(struct via_context *vmesa,
 204                             struct gl_framebuffer *fb,
 205                             __DRIdrawablePrivate *dPriv)
 206 {
 207    const unsigned shift = vmesa->viaScreen->bitsPerPixel / 16;
 208    const unsigned extra = 32;
 209    unsigned w;
 210    unsigned h;
 211
 212    /* Normally, the renderbuffer would be added to the framebuffer just once
 213     * when the framebuffer was created.  The VIA driver is a bit funny
 214     * though in that the front/back/depth renderbuffers are in the per-context
 215     * state!
 216     * That should be fixed someday.
 217     */
 218
 219    if (!vmesa->front.Base.InternalFormat) {
 220       /* do one-time init for the renderbuffers */
 221       viaInitRenderbuffer(&vmesa->front, GL_RGBA, dPriv);
 222       viaSetSpanFunctions(&vmesa->front, &fb->Visual);
 223       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &vmesa->front.Base);
 224
 225       if (fb->Visual.doubleBufferMode) {
 226          viaInitRenderbuffer(&vmesa->back, GL_RGBA, dPriv);
 227          viaSetSpanFunctions(&vmesa->back, &fb->Visual);
 228          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &vmesa->back.Base);
 229       }
 230
 231       if (vmesa->glCtx->Visual.depthBits > 0) {
 232          viaInitRenderbuffer(&vmesa->depth,
 233                              (vmesa->glCtx->Visual.depthBits == 16
 234                               ? GL_DEPTH_COMPONENT16 : GL_DEPTH_COMPONENT24),
 235                              dPriv);
 236          viaSetSpanFunctions(&vmesa->depth, &fb->Visual);
 237          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &vmesa->depth.Base);
 238       }
 239
 240       if (vmesa->glCtx->Visual.stencilBits > 0) {
 241          viaInitRenderbuffer(&vmesa->stencil, GL_STENCIL_INDEX8_EXT,
 242                              dPriv);
 243          viaSetSpanFunctions(&vmesa->stencil, &fb->Visual);
 244          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &vmesa->stencil.Base);
 245       }
 246    }
 247
 248    assert(vmesa->front.Base.InternalFormat);
 249    assert(vmesa->front.Base.AllocStorage);
 250    if (fb->Visual.doubleBufferMode) {
 251       assert(vmesa->back.Base.AllocStorage);
 252    }
 253    if (fb->Visual.depthBits) {
 254       assert(vmesa->depth.Base.AllocStorage);
 255    }
 256
 257
 258    /* Allocate front-buffer */
 259    if (vmesa->drawType == GLX_PBUFFER_BIT) {
 260       w = vmesa->driDrawable->w;
 261       h = vmesa->driDrawable->h;
 262
 263       vmesa->front.bpp = vmesa->viaScreen->bitsPerPixel;
 264       vmesa->front.pitch = buffer_align( w ) << shift; /* bytes, not pixels */
 265       vmesa->front.size = vmesa->front.pitch * h;
 266
 267       if (vmesa->front.map)
 268          via_free_draw_buffer(vmesa, &vmesa->front);
 269       if (!via_alloc_draw_buffer(vmesa, &vmesa->front))
 270          return GL_FALSE;
 271
 272    } else {
 273       w = vmesa->viaScreen->width;
 274       h = vmesa->viaScreen->height;
 275
 276       vmesa->front.bpp = vmesa->viaScreen->bitsPerPixel;
 277       vmesa->front.pitch = buffer_align( w ) << shift; /* bytes, not pixels */
 278       vmesa->front.size = vmesa->front.pitch * h;
 279       if (getenv("ALTERNATE_SCREEN"))
 280         vmesa->front.offset = vmesa->front.size;
 281       else
 282         vmesa->front.offset = 0;
 283       vmesa->front.map = (char *) vmesa->driScreen->pFB;
 284    }
 285
 286
 287    /* Allocate back-buffer */
 288    if (vmesa->hasBack) {
 289       vmesa->back.bpp = vmesa->viaScreen->bitsPerPixel;
 290       vmesa->back.pitch = (buffer_align( vmesa->driDrawable->w ) << shift);
 291       vmesa->back.pitch += extra;
 292       vmesa->back.pitch = MIN2(vmesa->back.pitch, vmesa->front.pitch);
 293       vmesa->back.size = vmesa->back.pitch * vmesa->driDrawable->h;
 294       if (vmesa->back.map)
 295          via_free_draw_buffer(vmesa, &vmesa->back);
 296       if (!via_alloc_draw_buffer(vmesa, &vmesa->back))
 297          return GL_FALSE;
 298    }
 299    else {
 300       if (vmesa->back.map)
 301          via_free_draw_buffer(vmesa, &vmesa->back);
 302       (void) memset( &vmesa->back, 0, sizeof( vmesa->back ) );
 303    }
 304
 305
 306    /* Allocate depth-buffer */
 307    if ( vmesa->hasStencil || vmesa->hasDepth ) {
 308       vmesa->depth.bpp = vmesa->depthBits;
 309       if (vmesa->depth.bpp == 24)
 310          vmesa->depth.bpp = 32;
 311
 312       vmesa->depth.pitch = (buffer_align( vmesa->driDrawable->w ) *
 313                             (vmesa->depth.bpp/8)) + extra;
 314       vmesa->depth.size = vmesa->depth.pitch * vmesa->driDrawable->h;
 315
 316       if (vmesa->depth.map)
 317          via_free_draw_buffer(vmesa, &vmesa->depth);
 318       if (!via_alloc_draw_buffer(vmesa, &vmesa->depth)) {
 319          return GL_FALSE;
 320       }
 321    }
 322    else {
 323       if (vmesa->depth.map)
 324          via_free_draw_buffer(vmesa, &vmesa->depth);
 325       (void) memset( & vmesa->depth, 0, sizeof( vmesa->depth ) );
 326    }
 327
 328    /* stencil buffer is same as depth buffer */
 329    vmesa->stencil.handle = vmesa->depth.handle;
 330    vmesa->stencil.size = vmesa->depth.size;
 331    vmesa->stencil.offset = vmesa->depth.offset;
 332    vmesa->stencil.index = vmesa->depth.index;
 333    vmesa->stencil.pitch = vmesa->depth.pitch;
 334    vmesa->stencil.bpp = vmesa->depth.bpp;
 335    vmesa->stencil.map = vmesa->depth.map;
 336    vmesa->stencil.orig = vmesa->depth.orig;
 337    vmesa->stencil.origMap = vmesa->depth.origMap;
 338
 339    if( vmesa->viaScreen->width == vmesa->driDrawable->w &&
 340        vmesa->viaScreen->height == vmesa->driDrawable->h ) {
 341       vmesa->doPageFlip = vmesa->allowPageFlip;
 342       if (vmesa->hasBack) {
 343          assert(vmesa->back.pitch == vmesa->front.pitch);
 344       }
 345    }
 346    else
 347       vmesa->doPageFlip = GL_FALSE;
 348
 349    return GL_TRUE;
 350 }
 351
 352
 353 void viaReAllocateBuffers(GLcontext *ctx, GLframebuffer *drawbuffer,
 354                           GLuint width, GLuint height)
 355 {
 356     struct via_context *vmesa = VIA_CONTEXT(ctx);
 357
 358     calculate_buffer_parameters(vmesa, drawbuffer, vmesa->driDrawable);
 359
 360     _mesa_resize_framebuffer(ctx, drawbuffer, width, height);
 361 }
 362
 363 /* Extension strings exported by the Unichrome driver.
 364  */
 365 const struct dri_extension card_extensions[] =
 366 {
 367     { "GL_ARB_multitexture",               NULL },
 368     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 369     { "GL_ARB_texture_env_add",            NULL },
 370     { "GL_ARB_texture_env_combine",        NULL },
 371 /*    { "GL_ARB_texture_env_dot3",           NULL }, */
 372     { "GL_ARB_texture_mirrored_repeat",    NULL },
 373     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 374     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 375     { "GL_EXT_stencil_wrap",               NULL },
 376     { "GL_EXT_texture_env_combine",        NULL },
 377 /*    { "GL_EXT_texture_env_dot3",           NULL }, */
 378     { "GL_EXT_texture_lod_bias",           NULL },
 379     { "GL_NV_blend_square",                NULL },
 380     { NULL,                                NULL }
 381 };
 382
 383 extern const struct tnl_pipeline_stage _via_fastrender_stage;
 384 extern const struct tnl_pipeline_stage _via_render_stage;
 385
 386 static const struct tnl_pipeline_stage *via_pipeline[] = {
 387     &_tnl_vertex_transform_stage,
 388     &_tnl_normal_transform_stage,
 389     &_tnl_lighting_stage,
 390     &_tnl_fog_coordinate_stage,
 391     &_tnl_texgen_stage,
 392     &_tnl_texture_transform_stage,
 393     /* REMOVE: point attenuation stage */
 394 #if 1
 395     &_via_fastrender_stage,     /* ADD: unclipped rastersetup-to-dma */
 396 #endif
 397     &_tnl_render_stage,
 398     0,
 399 };
 400
 401
 402 static const struct dri_debug_control debug_control[] =
 403 {
 404     { "fall",  DEBUG_FALLBACKS },
 405     { "tex",   DEBUG_TEXTURE },
 406     { "ioctl", DEBUG_IOCTL },
 407     { "prim",  DEBUG_PRIMS },
 408     { "vert",  DEBUG_VERTS },
 409     { "state", DEBUG_STATE },
 410     { "verb",  DEBUG_VERBOSE },
 411     { "dri",   DEBUG_DRI },
 412     { "dma",   DEBUG_DMA },
 413     { "san",   DEBUG_SANITY },
 414     { "sync",  DEBUG_SYNC },
 415     { "sleep", DEBUG_SLEEP },
 416     { "pix",   DEBUG_PIXEL },
 417     { "2d",    DEBUG_2D },
 418     { NULL,    0 }
 419 };
 420
 421
 422 static GLboolean
 423 AllocateDmaBuffer(struct via_context *vmesa)
 424 {
 425     if (vmesa->dma)
 426         via_free_dma_buffer(vmesa);
 427
 428     if (!via_alloc_dma_buffer(vmesa))
 429         return GL_FALSE;
 430
 431     vmesa->dmaLow = 0;
 432     vmesa->dmaCliprectAddr = ~0;
 433     return GL_TRUE;
 434 }
 435
 436 static void
 437 FreeBuffer(struct via_context *vmesa)
 438 {
 439     if (vmesa->front.map && vmesa->drawType == GLX_PBUFFER_BIT)
 440         via_free_draw_buffer(vmesa, &vmesa->front);
 441
 442     if (vmesa->back.map)
 443         via_free_draw_buffer(vmesa, &vmesa->back);
 444
 445     if (vmesa->depth.map)
 446         via_free_draw_buffer(vmesa, &vmesa->depth);
 447
 448     if (vmesa->breadcrumb.map)
 449         via_free_draw_buffer(vmesa, &vmesa->breadcrumb);
 450
 451     if (vmesa->dma)
 452         via_free_dma_buffer(vmesa);
 453 }
 454
 455
 456 GLboolean
 457 viaCreateContext(const __GLcontextModes *visual,
 458                  __DRIcontextPrivate *driContextPriv,
 459                  void *sharedContextPrivate)
 460 {
 461     GLcontext *ctx, *shareCtx;
 462     struct via_context *vmesa;
 463     __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 464     viaScreenPrivate *viaScreen = (viaScreenPrivate *)sPriv->private;
 465     drm_via_sarea_t *saPriv = (drm_via_sarea_t *)
 466         (((GLubyte *)sPriv->pSAREA) + viaScreen->sareaPrivOffset);
 467     struct dd_function_table functions;
 468
 469     /* Allocate via context */
 470     vmesa = (struct via_context *) CALLOC_STRUCT(via_context);
 471     if (!vmesa) {
 472         return GL_FALSE;
 473     }
 474
 475     /* Parse configuration files.
 476      */
 477     driParseConfigFiles (&vmesa->optionCache, &viaScreen->optionCache,
 478                          sPriv->myNum, "unichrome");
 479
 480     /* pick back buffer */
 481     vmesa->hasBack = visual->doubleBufferMode;
 482
 483     switch(visual->depthBits) {
 484     case 0:
 485        vmesa->hasDepth = GL_FALSE;
 486        vmesa->depthBits = 0;
 487        vmesa->depth_max = 1.0;
 488        break;
 489     case 16:
 490        vmesa->hasDepth = GL_TRUE;
 491        vmesa->depthBits = visual->depthBits;
 492        vmesa->have_hw_stencil = GL_FALSE;
 493        vmesa->depth_max = (GLfloat)0xffff;
 494        vmesa->depth_clear_mask = 0xf << 28;
 495        vmesa->ClearDepth = 0xffff;
 496        vmesa->polygon_offset_scale = 1.0 / vmesa->depth_max;
 497        break;
 498     case 24:
 499        vmesa->hasDepth = GL_TRUE;
 500        vmesa->depthBits = visual->depthBits;
 501        vmesa->depth_max = (GLfloat) 0xffffff;
 502        vmesa->depth_clear_mask = 0xe << 28;
 503        vmesa->ClearDepth = 0xffffff00;
 504
 505        assert(visual->haveStencilBuffer);
 506        assert(visual->stencilBits == 8);
 507
 508        vmesa->have_hw_stencil = GL_TRUE;
 509        vmesa->stencilBits = visual->stencilBits;
 510        vmesa->stencil_clear_mask = 0x1 << 28;
 511        vmesa->polygon_offset_scale = 2.0 / vmesa->depth_max;
 512        break;
 513     case 32:
 514        vmesa->hasDepth = GL_TRUE;
 515        vmesa->depthBits = visual->depthBits;
 516        assert(!visual->haveStencilBuffer);
 517        vmesa->have_hw_stencil = GL_FALSE;
 518        vmesa->depth_max = (GLfloat)0xffffffff;
 519        vmesa->depth_clear_mask = 0xf << 28;
 520        vmesa->ClearDepth = 0xffffffff;
 521        vmesa->polygon_offset_scale = 2.0 / vmesa->depth_max;
 522        break;
 523     default:
 524        assert(0);
 525        break;
 526     }
 527
 528     make_empty_list(&vmesa->freed_tex_buffers);
 529     make_empty_list(&vmesa->tex_image_list[VIA_MEM_VIDEO]);
 530     make_empty_list(&vmesa->tex_image_list[VIA_MEM_AGP]);
 531     make_empty_list(&vmesa->tex_image_list[VIA_MEM_SYSTEM]);
 532
 533     _mesa_init_driver_functions(&functions);
 534     viaInitTextureFuncs(&functions);
 535
 536     /* Allocate the Mesa context */
 537     if (sharedContextPrivate)
 538         shareCtx = ((struct via_context *) sharedContextPrivate)->glCtx;
 539     else
 540         shareCtx = NULL;
 541
 542     vmesa->glCtx = _mesa_create_context(visual, shareCtx, &functions,
 543                                         (void*) vmesa);
 544
 545     vmesa->shareCtx = shareCtx;
 546
 547     if (!vmesa->glCtx) {
 548         FREE(vmesa);
 549         return GL_FALSE;
 550     }
 551     driContextPriv->driverPrivate = vmesa;
 552
 553     ctx = vmesa->glCtx;
 554
 555     if (driQueryOptionb(&vmesa->optionCache, "excess_mipmap"))
 556         ctx->Const.MaxTextureLevels = 11;
 557     else
 558         ctx->Const.MaxTextureLevels = 10;
 559
 560     ctx->Const.MaxTextureUnits = 2;
 561     ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 562     ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 563
 564     ctx->Const.MinLineWidth = 1.0;
 565     ctx->Const.MinLineWidthAA = 1.0;
 566     ctx->Const.MaxLineWidth = 1.0;
 567     ctx->Const.MaxLineWidthAA = 1.0;
 568     ctx->Const.LineWidthGranularity = 1.0;
 569
 570     ctx->Const.MinPointSize = 1.0;
 571     ctx->Const.MinPointSizeAA = 1.0;
 572     ctx->Const.MaxPointSize = 1.0;
 573     ctx->Const.MaxPointSizeAA = 1.0;
 574     ctx->Const.PointSizeGranularity = 1.0;
 575
 576     ctx->Const.MaxDrawBuffers = 1;
 577
 578     ctx->Driver.GetString = viaGetString;
 579
 580     ctx->DriverCtx = (void *)vmesa;
 581     vmesa->glCtx = ctx;
 582
 583     /* Initialize the software rasterizer and helper modules.
 584      */
 585     _swrast_CreateContext(ctx);
 586     _vbo_CreateContext(ctx);
 587     _tnl_CreateContext(ctx);
 588     _swsetup_CreateContext(ctx);
 589
 590     /* Install the customized pipeline:
 591      */
 592     _tnl_destroy_pipeline(ctx);
 593     _tnl_install_pipeline(ctx, via_pipeline);
 594
 595     /* Configure swrast and T&L to match hardware characteristics:
 596      */
 597     _swrast_allow_pixel_fog(ctx, GL_FALSE);
 598     _swrast_allow_vertex_fog(ctx, GL_TRUE);
 599     _tnl_allow_pixel_fog(ctx, GL_FALSE);
 600     _tnl_allow_vertex_fog(ctx, GL_TRUE);
 601
 602     vmesa->hHWContext = driContextPriv->hHWContext;
 603     vmesa->driFd = sPriv->fd;
 604     vmesa->driHwLock = &sPriv->pSAREA->lock;
 605
 606     vmesa->viaScreen = viaScreen;
 607     vmesa->driScreen = sPriv;
 608     vmesa->sarea = saPriv;
 609
 610     vmesa->renderIndex = ~0;
 611     vmesa->setupIndex = ~0;
 612     vmesa->hwPrimitive = GL_POLYGON+1;
 613
 614     /* KW: Hardwire this.  Was previously set bogusly in
 615      * viaCreateBuffer.  Needs work before PBUFFER can be used:
 616      */
 617     vmesa->drawType = GLX_WINDOW_BIT;
 618
 619
 620     _math_matrix_ctr(&vmesa->ViewportMatrix);
 621
 622     /* Do this early, before VIA_FLUSH_DMA can be called:
 623      */
 624     if (!AllocateDmaBuffer(vmesa)) {
 625         fprintf(stderr ,"AllocateDmaBuffer fail\n");
 626         FreeBuffer(vmesa);
 627         FREE(vmesa);
 628         return GL_FALSE;
 629     }
 630
 631     /* Allocate a small piece of fb memory for synchronization:
 632      */
 633     vmesa->breadcrumb.bpp = 32;
 634     vmesa->breadcrumb.pitch = buffer_align( 64 ) << 2;
 635     vmesa->breadcrumb.size = vmesa->breadcrumb.pitch;
 636
 637     if (!via_alloc_draw_buffer(vmesa, &vmesa->breadcrumb)) {
 638         fprintf(stderr ,"AllocateDmaBuffer fail\n");
 639         FreeBuffer(vmesa);
 640         FREE(vmesa);
 641         return GL_FALSE;
 642     }
 643
 644     driInitExtensions( ctx, card_extensions, GL_TRUE );
 645     viaInitStateFuncs(ctx);
 646     viaInitTriFuncs(ctx);
 647     viaInitSpanFuncs(ctx);
 648     viaInitIoctlFuncs(ctx);
 649     viaInitState(ctx);
 650
 651     if (getenv("VIA_DEBUG"))
 652        VIA_DEBUG = driParseDebugString( getenv( "VIA_DEBUG" ),
 653                                         debug_control );
 654
 655     if (getenv("VIA_NO_RAST") ||
 656         driQueryOptionb(&vmesa->optionCache, "no_rast"))
 657        FALLBACK(vmesa, VIA_FALLBACK_USER_DISABLE, 1);
 658
 659     if (getenv("VIA_PAGEFLIP"))
 660        vmesa->allowPageFlip = 1;
 661
 662     (*sPriv->systemTime->getUST)( &vmesa->swap_ust );
 663
 664
 665     vmesa->regMMIOBase = (GLuint *)((unsigned long)viaScreen->reg);
 666     vmesa->pnGEMode = (GLuint *)((unsigned long)viaScreen->reg + 0x4);
 667     vmesa->regEngineStatus = (GLuint *)((unsigned long)viaScreen->reg + 0x400);
 668     vmesa->regTranSet = (GLuint *)((unsigned long)viaScreen->reg + 0x43C);
 669     vmesa->regTranSpace = (GLuint *)((unsigned long)viaScreen->reg + 0x440);
 670     vmesa->agpBase = viaScreen->agpBase;
 671
 672
 673     return GL_TRUE;
 674 }
 675
 676 void
 677 viaDestroyContext(__DRIcontextPrivate *driContextPriv)
 678 {
 679     GET_CURRENT_CONTEXT(ctx);
 680     struct via_context *vmesa =
 681        (struct via_context *)driContextPriv->driverPrivate;
 682     struct via_context *current = ctx ? VIA_CONTEXT(ctx) : NULL;
 683
 684     assert(vmesa); /* should never be null */
 685
 686     if (vmesa->driDrawable) {
 687        viaWaitIdle(vmesa, GL_FALSE);
 688
 689        if (vmesa->doPageFlip) {
 690           LOCK_HARDWARE(vmesa);
 691           if (vmesa->pfCurrentOffset != 0) {
 692              fprintf(stderr, "%s - reset pf\n", __FUNCTION__);
 693              viaResetPageFlippingLocked(vmesa);
 694           }
 695           UNLOCK_HARDWARE(vmesa);
 696        }
 697     }
 698
 699     /* check if we're deleting the currently bound context */
 700     if (vmesa == current) {
 701       VIA_FLUSH_DMA(vmesa);
 702       _mesa_make_current(NULL, NULL, NULL);
 703     }
 704
 705     _swsetup_DestroyContext(vmesa->glCtx);
 706     _tnl_DestroyContext(vmesa->glCtx);
 707     _vbo_DestroyContext(vmesa->glCtx);
 708     _swrast_DestroyContext(vmesa->glCtx);
 709     /* free the Mesa context */
 710     _mesa_destroy_context(vmesa->glCtx);
 711     /* release our data */
 712     FreeBuffer(vmesa);
 713
 714     assert (is_empty_list(&vmesa->tex_image_list[VIA_MEM_AGP]));
 715     assert (is_empty_list(&vmesa->tex_image_list[VIA_MEM_VIDEO]));
 716     assert (is_empty_list(&vmesa->tex_image_list[VIA_MEM_SYSTEM]));
 717     assert (is_empty_list(&vmesa->freed_tex_buffers));
 718
 719     driDestroyOptionCache(&vmesa->optionCache);
 720
 721     FREE(vmesa);
 722 }
 723
 724
 725 void viaXMesaWindowMoved(struct via_context *vmesa)
 726 {
 727    __DRIdrawablePrivate *const drawable = vmesa->driDrawable;
 728    __DRIdrawablePrivate *const readable = vmesa->driReadable;
 729    struct via_renderbuffer * draw_buffer;
 730    struct via_renderbuffer * read_buffer;
 731    GLuint bytePerPixel = vmesa->viaScreen->bitsPerPixel >> 3;
 732
 733    if (!drawable)
 734       return;
 735
 736    draw_buffer =  (struct via_renderbuffer *) drawable->driverPrivate;
 737    read_buffer =  (struct via_renderbuffer *) readable->driverPrivate;
 738
 739    switch (vmesa->glCtx->DrawBuffer->_ColorDrawBufferIndexes[0]) {
 740    case BUFFER_BACK_LEFT:
 741       if (drawable->numBackClipRects == 0) {
 742          vmesa->numClipRects = drawable->numClipRects;
 743          vmesa->pClipRects = drawable->pClipRects;
 744       }
 745       else {
 746          vmesa->numClipRects = drawable->numBackClipRects;
 747          vmesa->pClipRects = drawable->pBackClipRects;
 748       }
 749       break;
 750    case BUFFER_FRONT_LEFT:
 751       vmesa->numClipRects = drawable->numClipRects;
 752       vmesa->pClipRects = drawable->pClipRects;
 753       break;
 754    default:
 755       vmesa->numClipRects = 0;
 756       break;
 757    }
 758
 759    if ((draw_buffer->drawW != drawable->w)
 760        || (draw_buffer->drawH != drawable->h)) {
 761       calculate_buffer_parameters(vmesa, vmesa->glCtx->DrawBuffer,
 762                                   drawable);
 763    }
 764
 765    draw_buffer->drawX = drawable->x;
 766    draw_buffer->drawY = drawable->y;
 767    draw_buffer->drawW = drawable->w;
 768    draw_buffer->drawH = drawable->h;
 769
 770    if (drawable != readable) {
 771       if ((read_buffer->drawW != readable->w)
 772           || (read_buffer->drawH != readable->h)) {
 773          calculate_buffer_parameters(vmesa, vmesa->glCtx->ReadBuffer,
 774                                      readable);
 775       }
 776
 777       read_buffer->drawX = readable->x;
 778       read_buffer->drawY = readable->y;
 779       read_buffer->drawW = readable->w;
 780       read_buffer->drawH = readable->h;
 781    }
 782
 783    vmesa->front.orig = (vmesa->front.offset +
 784                         draw_buffer->drawY * vmesa->front.pitch +
 785                         draw_buffer->drawX * bytePerPixel);
 786
 787    vmesa->front.origMap = (vmesa->front.map +
 788                         draw_buffer->drawY * vmesa->front.pitch +
 789                         draw_buffer->drawX * bytePerPixel);
 790
 791    vmesa->back.orig = (vmesa->back.offset +
 792                         draw_buffer->drawY * vmesa->back.pitch +
 793                         draw_buffer->drawX * bytePerPixel);
 794
 795    vmesa->back.origMap = (vmesa->back.map +
 796                         draw_buffer->drawY * vmesa->back.pitch +
 797                         draw_buffer->drawX * bytePerPixel);
 798
 799    vmesa->depth.orig = (vmesa->depth.offset +
 800                         draw_buffer->drawY * vmesa->depth.pitch +
 801                         draw_buffer->drawX * bytePerPixel);
 802
 803    vmesa->depth.origMap = (vmesa->depth.map +
 804                         draw_buffer->drawY * vmesa->depth.pitch +
 805                         draw_buffer->drawX * bytePerPixel);
 806
 807    viaCalcViewport(vmesa->glCtx);
 808 }
 809
 810 GLboolean
 811 viaUnbindContext(__DRIcontextPrivate *driContextPriv)
 812 {
 813     return GL_TRUE;
 814 }
 815
 816 GLboolean
 817 viaMakeCurrent(__DRIcontextPrivate *driContextPriv,
 818                __DRIdrawablePrivate *driDrawPriv,
 819                __DRIdrawablePrivate *driReadPriv)
 820 {
 821     if (VIA_DEBUG & DEBUG_DRI) {
 822         fprintf(stderr, "driContextPriv = %016lx\n", (unsigned long)driContextPriv);
 823         fprintf(stderr, "driDrawPriv = %016lx\n", (unsigned long)driDrawPriv);
 824         fprintf(stderr, "driReadPriv = %016lx\n", (unsigned long)driReadPriv);
 825     }
 826
 827     if (driContextPriv) {
 828         struct via_context *vmesa =
 829            (struct via_context *)driContextPriv->driverPrivate;
 830         GLcontext *ctx = vmesa->glCtx;
 831         struct gl_framebuffer *drawBuffer, *readBuffer;
 832
 833         drawBuffer = (GLframebuffer *)driDrawPriv->driverPrivate;
 834         readBuffer = (GLframebuffer *)driReadPriv->driverPrivate;
 835
 836        if ((vmesa->driDrawable != driDrawPriv)
 837            || (vmesa->driReadable != driReadPriv)) {
 838           if (driDrawPriv->swap_interval == (unsigned)-1) {
 839              driDrawPriv->vblFlags =
 840                 vmesa->viaScreen->irqEnabled ?
 841                 driGetDefaultVBlankFlags(&vmesa->optionCache) :
 842                 VBLANK_FLAG_NO_IRQ;
 843
 844              driDrawableInitVBlank(driDrawPriv);
 845           }
 846
 847           vmesa->driDrawable = driDrawPriv;
 848           vmesa->driReadable = driReadPriv;
 849
 850           if ((drawBuffer->Width != driDrawPriv->w)
 851               || (drawBuffer->Height != driDrawPriv->h)) {
 852              _mesa_resize_framebuffer(ctx, drawBuffer,
 853                                       driDrawPriv->w, driDrawPriv->h);
 854              drawBuffer->Initialized = GL_TRUE;
 855           }
 856
 857           if (!calculate_buffer_parameters(vmesa, drawBuffer, driDrawPriv)) {
 858              return GL_FALSE;
 859           }
 860
 861           if (driDrawPriv != driReadPriv) {
 862              if ((readBuffer->Width != driReadPriv->w)
 863                  || (readBuffer->Height != driReadPriv->h)) {
 864                 _mesa_resize_framebuffer(ctx, readBuffer,
 865                                          driReadPriv->w, driReadPriv->h);
 866                 readBuffer->Initialized = GL_TRUE;
 867              }
 868
 869              if (!calculate_buffer_parameters(vmesa, readBuffer, driReadPriv)) {
 870                 return GL_FALSE;
 871              }
 872           }
 873        }
 874
 875         _mesa_make_current(vmesa->glCtx, drawBuffer, readBuffer);
 876
 877         ctx->Driver.DrawBuffer( ctx, ctx->Color.DrawBuffer[0] );
 878
 879         viaXMesaWindowMoved(vmesa);
 880         ctx->Driver.Scissor(vmesa->glCtx,
 881                             vmesa->glCtx->Scissor.X,
 882                             vmesa->glCtx->Scissor.Y,
 883                             vmesa->glCtx->Scissor.Width,
 884                             vmesa->glCtx->Scissor.Height);
 885     }
 886     else {
 887         _mesa_make_current(NULL, NULL, NULL);
 888     }
 889
 890     return GL_TRUE;
 891 }
 892
 893 void viaGetLock(struct via_context *vmesa, GLuint flags)
 894 {
 895     __DRIdrawablePrivate *dPriv = vmesa->driDrawable;
 896     __DRIscreenPrivate *sPriv = vmesa->driScreen;
 897
 898     drmGetLock(vmesa->driFd, vmesa->hHWContext, flags);
 899
 900     DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 901     if (dPriv != vmesa->driReadable) {
 902         DRI_VALIDATE_DRAWABLE_INFO(sPriv, vmesa->driReadable);
 903     }
 904
 905     if (vmesa->sarea->ctxOwner != vmesa->hHWContext) {
 906        vmesa->sarea->ctxOwner = vmesa->hHWContext;
 907        vmesa->newEmitState = ~0;
 908     }
 909
 910     if (vmesa->lastStamp != dPriv->lastStamp) {
 911        viaXMesaWindowMoved(vmesa);
 912        driUpdateFramebufferSize(vmesa->glCtx, dPriv);
 913        vmesa->newEmitState = ~0;
 914        vmesa->lastStamp = dPriv->lastStamp;
 915     }
 916
 917     if (vmesa->doPageFlip &&
 918         vmesa->pfCurrentOffset != vmesa->sarea->pfCurrentOffset) {
 919        fprintf(stderr, "%s - reset pf\n", __FUNCTION__);
 920        viaResetPageFlippingLocked(vmesa);
 921     }
 922 }
 923
 924
 925 void
 926 viaSwapBuffers(__DRIdrawablePrivate *drawablePrivate)
 927 {
 928     __DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *)drawablePrivate;
 929
 930     if (dPriv &&
 931         dPriv->driContextPriv &&
 932         dPriv->driContextPriv->driverPrivate) {
 933         struct via_context *vmesa =
 934            (struct via_context *)dPriv->driContextPriv->driverPrivate;
 935         GLcontext *ctx = vmesa->glCtx;
 936
 937         _mesa_notifySwapBuffers(ctx);
 938
 939         if (ctx->Visual.doubleBufferMode) {
 940             if (vmesa->doPageFlip) {
 941                 viaPageFlip(dPriv);
 942             }
 943             else {
 944                 viaCopyBuffer(dPriv);
 945             }
 946         }
 947         else
 948             VIA_FLUSH_DMA(vmesa);
 949     }
 950     else {
 951         _mesa_problem(NULL, "viaSwapBuffers: drawable has no context!\n");
 952     }
 953 }