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  1. /*
  2. Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
  3.  
  4. The Weather Channel (TM) funded Tungsten Graphics to develop the
  5. initial release of the Radeon 8500 driver under the XFree86 license.
  6. This notice must be preserved.
  7.  
  8. Permission is hereby granted, free of charge, to any person obtaining
  9. a copy of this software and associated documentation files (the
  10. "Software"), to deal in the Software without restriction, including
  11. without limitation the rights to use, copy, modify, merge, publish,
  12. distribute, sublicense, and/or sell copies of the Software, and to
  13. permit persons to whom the Software is furnished to do so, subject to
  14. the following conditions:
  15.  
  16. The above copyright notice and this permission notice (including the
  17. next paragraph) shall be included in all copies or substantial
  18. portions of the Software.
  19.  
  20. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21. EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22. MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23. IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24. LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25. OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26. WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27.  
  28. **************************************************************************/
  29.  
  30. /*
  31.  * Authors:
  32.  *   Keith Whitwell <keith@tungstengraphics.com>
  33.  */
  34.  
  35. #include "main/glheader.h"
  36. #include "main/mtypes.h"
  37. #include "main/colormac.h"
  38. #include "main/enums.h"
  39. #include "main/image.h"
  40. #include "main/imports.h"
  41. #include "main/macros.h"
  42. #include "main/simple_list.h"
  43.  
  44. #include "swrast/s_context.h"
  45. #include "swrast/s_fog.h"
  46. #include "swrast_setup/swrast_setup.h"
  47. #include "tnl/tnl.h"
  48. #include "tnl/t_context.h"
  49. #include "tnl/t_pipeline.h"
  50.  
  51. #include "r200_context.h"
  52. #include "r200_ioctl.h"
  53. #include "r200_state.h"
  54. #include "r200_swtcl.h"
  55. #include "r200_tcl.h"
  56.  
  57.  
  58. /***********************************************************************
  59.  *                         Initialization
  60.  ***********************************************************************/
  61.  
  62. #define EMIT_ATTR( ATTR, STYLE, F0 )                                    \
  63. do {                                                                    \
  64.    rmesa->radeon.swtcl.vertex_attrs[rmesa->radeon.swtcl.vertex_attr_count].attrib = (ATTR);     \
  65.    rmesa->radeon.swtcl.vertex_attrs[rmesa->radeon.swtcl.vertex_attr_count].format = (STYLE);    \
  66.    rmesa->radeon.swtcl.vertex_attr_count++;                                     \
  67.    fmt_0 |= F0;                                                         \
  68. } while (0)
  69.  
  70. #define EMIT_PAD( N )                                                   \
  71. do {                                                                    \
  72.    rmesa->radeon.swtcl.vertex_attrs[rmesa->radeon.swtcl.vertex_attr_count].attrib = 0;          \
  73.    rmesa->radeon.swtcl.vertex_attrs[rmesa->radeon.swtcl.vertex_attr_count].format = EMIT_PAD;   \
  74.    rmesa->radeon.swtcl.vertex_attrs[rmesa->radeon.swtcl.vertex_attr_count].offset = (N);                \
  75.    rmesa->radeon.swtcl.vertex_attr_count++;                                     \
  76. } while (0)
  77.  
  78. static void r200SetVertexFormat( struct gl_context *ctx )
  79. {
  80.    r200ContextPtr rmesa = R200_CONTEXT( ctx );
  81.    TNLcontext *tnl = TNL_CONTEXT(ctx);
  82.    struct vertex_buffer *VB = &tnl->vb;
  83.    GLbitfield64 index_bitset = tnl->render_inputs_bitset;
  84.    int fmt_0 = 0;
  85.    int fmt_1 = 0;
  86.    int offset = 0;
  87.  
  88.    /* Important:
  89.     */
  90.    if ( VB->NdcPtr != NULL ) {
  91.       VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
  92.    }
  93.    else {
  94.       VB->AttribPtr[VERT_ATTRIB_POS] = VB->ClipPtr;
  95.    }
  96.  
  97.    assert( VB->AttribPtr[VERT_ATTRIB_POS] != NULL );
  98.    rmesa->radeon.swtcl.vertex_attr_count = 0;
  99.  
  100.    /* EMIT_ATTR's must be in order as they tell t_vertex.c how to
  101.     * build up a hardware vertex.
  102.     */
  103.    if ( !rmesa->swtcl.needproj ||
  104.         (index_bitset & BITFIELD64_RANGE(_TNL_ATTRIB_TEX0, _TNL_NUM_TEX)) ) {
  105.       /* need w coord for projected textures */
  106.       EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_4F, R200_VTX_XY | R200_VTX_Z0 | R200_VTX_W0 );
  107.       offset = 4;
  108.    }
  109.    else {
  110.       EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_3F, R200_VTX_XY | R200_VTX_Z0 );
  111.       offset = 3;
  112.    }
  113.  
  114.    if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE)) {
  115.       EMIT_ATTR( _TNL_ATTRIB_POINTSIZE, EMIT_1F, R200_VTX_POINT_SIZE );
  116.       offset += 1;
  117.    }
  118.  
  119.    rmesa->swtcl.coloroffset = offset;
  120. #if MESA_LITTLE_ENDIAN
  121.    EMIT_ATTR( _TNL_ATTRIB_COLOR0, EMIT_4UB_4F_RGBA, (R200_VTX_PK_RGBA << R200_VTX_COLOR_0_SHIFT) );
  122. #else
  123.    EMIT_ATTR( _TNL_ATTRIB_COLOR0, EMIT_4UB_4F_ABGR, (R200_VTX_PK_RGBA << R200_VTX_COLOR_0_SHIFT) );
  124. #endif
  125.    offset += 1;
  126.  
  127.    rmesa->swtcl.specoffset = 0;
  128.    if (index_bitset &
  129.        (BITFIELD64_BIT(_TNL_ATTRIB_COLOR1) | BITFIELD64_BIT(_TNL_ATTRIB_FOG))) {
  130.  
  131. #if MESA_LITTLE_ENDIAN
  132.       if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_COLOR1)) {
  133.          rmesa->swtcl.specoffset = offset;
  134.          EMIT_ATTR( _TNL_ATTRIB_COLOR1, EMIT_3UB_3F_RGB, (R200_VTX_PK_RGBA << R200_VTX_COLOR_1_SHIFT) );
  135.       }
  136.       else {
  137.          EMIT_PAD( 3 );
  138.       }
  139.  
  140.       if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_FOG)) {
  141.          EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1UB_1F, (R200_VTX_PK_RGBA << R200_VTX_COLOR_1_SHIFT) );
  142.       }
  143.       else {
  144.          EMIT_PAD( 1 );
  145.       }
  146. #else
  147.       if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_FOG)) {
  148.          EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1UB_1F, (R200_VTX_PK_RGBA << R200_VTX_COLOR_1_SHIFT) );
  149.       }
  150.       else {
  151.          EMIT_PAD( 1 );
  152.       }
  153.  
  154.       if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_COLOR1)) {
  155.          rmesa->swtcl.specoffset = offset;
  156.          EMIT_ATTR( _TNL_ATTRIB_COLOR1, EMIT_3UB_3F_BGR, (R200_VTX_PK_RGBA << R200_VTX_COLOR_1_SHIFT) );
  157.       }
  158.       else {
  159.          EMIT_PAD( 3 );
  160.       }
  161. #endif
  162.    }
  163.  
  164.    if (index_bitset & BITFIELD64_RANGE(_TNL_ATTRIB_TEX0, _TNL_NUM_TEX)) {
  165.       int i;
  166.  
  167.       for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
  168.          if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_TEX(i))) {
  169.             GLuint sz = VB->AttribPtr[_TNL_ATTRIB_TEX0 + i]->size;
  170.  
  171.             fmt_1 |= sz << (3 * i);
  172.             EMIT_ATTR( _TNL_ATTRIB_TEX0+i, EMIT_1F + sz - 1, 0 );
  173.          }
  174.       }
  175.    }
  176.  
  177.    if ( (rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] & R200_FOG_USE_MASK)
  178.       != R200_FOG_USE_SPEC_ALPHA ) {
  179.       R200_STATECHANGE( rmesa, ctx );
  180.       rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] &= ~R200_FOG_USE_MASK;
  181.       rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] |= R200_FOG_USE_SPEC_ALPHA;
  182.    }
  183.  
  184.    if (rmesa->radeon.tnl_index_bitset != index_bitset ||
  185.         (rmesa->hw.vtx.cmd[VTX_VTXFMT_0] != fmt_0) ||
  186.         (rmesa->hw.vtx.cmd[VTX_VTXFMT_1] != fmt_1) ) {
  187.       R200_NEWPRIM(rmesa);
  188.       R200_STATECHANGE( rmesa, vtx );
  189.       rmesa->hw.vtx.cmd[VTX_VTXFMT_0] = fmt_0;
  190.       rmesa->hw.vtx.cmd[VTX_VTXFMT_1] = fmt_1;
  191.  
  192.       rmesa->radeon.swtcl.vertex_size =
  193.           _tnl_install_attrs( ctx,
  194.                               rmesa->radeon.swtcl.vertex_attrs,
  195.                               rmesa->radeon.swtcl.vertex_attr_count,
  196.                               NULL, 0 );
  197.       rmesa->radeon.swtcl.vertex_size /= 4;
  198.       rmesa->radeon.tnl_index_bitset = index_bitset;
  199.    }
  200. }
  201.  
  202. static void r200_predict_emit_size( r200ContextPtr rmesa )
  203. {
  204.    if (RADEON_DEBUG & RADEON_VERTS)
  205.       fprintf(stderr, "%s\n", __func__);
  206.    const int vertex_array_size = 7;
  207.    const int prim_size = 3;
  208.    if (!rmesa->radeon.swtcl.emit_prediction) {
  209.       const int state_size = radeonCountStateEmitSize(&rmesa->radeon);
  210.       if (rcommonEnsureCmdBufSpace(&rmesa->radeon,
  211.                state_size +
  212.                vertex_array_size + prim_size,
  213.                __FUNCTION__))
  214.          rmesa->radeon.swtcl.emit_prediction = radeonCountStateEmitSize(&rmesa->radeon);
  215.       else
  216.          rmesa->radeon.swtcl.emit_prediction = state_size;
  217.       rmesa->radeon.swtcl.emit_prediction += vertex_array_size + prim_size
  218.          + rmesa->radeon.cmdbuf.cs->cdw;
  219.    }
  220. }
  221.  
  222.  
  223. static void r200RenderStart( struct gl_context *ctx )
  224. {
  225.    r200SetVertexFormat( ctx );
  226.    if (RADEON_DEBUG & RADEON_VERTS)
  227.       fprintf(stderr, "%s\n", __func__);
  228. }
  229.  
  230.  
  231. /**
  232.  * Set vertex state for SW TCL.  The primary purpose of this function is to
  233.  * determine in advance whether or not the hardware can / should do the
  234.  * projection divide or Mesa should do it.
  235.  */
  236. void r200ChooseVertexState( struct gl_context *ctx )
  237. {
  238.    r200ContextPtr rmesa = R200_CONTEXT( ctx );
  239.    TNLcontext *tnl = TNL_CONTEXT(ctx);
  240.    GLuint vte;
  241.    GLuint vap;
  242.    GLboolean unfilled = (ctx->Polygon.FrontMode != GL_FILL ||
  243.                          ctx->Polygon.BackMode != GL_FILL);
  244.    GLboolean twosided = ctx->Light.Enabled && ctx->Light.Model.TwoSide;
  245.  
  246.    /* We must ensure that we don't do _tnl_need_projected_coords while in a
  247.     * rasterization fallback.  As this function will be called again when we
  248.     * leave a rasterization fallback, we can just skip it for now.
  249.     */
  250.    if (rmesa->radeon.Fallback != 0)
  251.       return;
  252.  
  253.    vte = rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL];
  254.    vap = rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL];
  255.  
  256.    /* HW perspective divide is a win, but tiny vertex formats are a
  257.     * bigger one.
  258.     */
  259.    if ((0 == (tnl->render_inputs_bitset & BITFIELD64_RANGE(_TNL_ATTRIB_TEX0, _TNL_NUM_TEX)))
  260.        || twosided
  261.        || unfilled) {
  262.       rmesa->swtcl.needproj = GL_TRUE;
  263.       vte |= R200_VTX_XY_FMT | R200_VTX_Z_FMT;
  264.       vte &= ~R200_VTX_W0_FMT;
  265.       if (tnl->render_inputs_bitset & BITFIELD64_RANGE(_TNL_ATTRIB_TEX0, _TNL_NUM_TEX)) {
  266.          vap &= ~R200_VAP_FORCE_W_TO_ONE;
  267.       }
  268.       else {
  269.          vap |= R200_VAP_FORCE_W_TO_ONE;
  270.       }
  271.    }
  272.    else {
  273.       rmesa->swtcl.needproj = GL_FALSE;
  274.       vte &= ~(R200_VTX_XY_FMT | R200_VTX_Z_FMT);
  275.       vte |= R200_VTX_W0_FMT;
  276.       vap &= ~R200_VAP_FORCE_W_TO_ONE;
  277.    }
  278.  
  279.    _tnl_need_projected_coords( ctx, rmesa->swtcl.needproj );
  280.  
  281.    if (vte != rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL]) {
  282.       R200_STATECHANGE( rmesa, vte );
  283.       rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] = vte;
  284.    }
  285.  
  286.    if (vap != rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL]) {
  287.       R200_STATECHANGE( rmesa, vap );
  288.       rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] = vap;
  289.    }
  290. }
  291.  
  292. void r200_swtcl_flush(struct gl_context *ctx, uint32_t current_offset)
  293. {
  294.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  295.    if (RADEON_DEBUG & RADEON_VERTS)
  296.       fprintf(stderr, "%s\n", __func__);
  297.  
  298.  
  299.    radeonEmitState(&rmesa->radeon);
  300.    r200EmitVertexAOS( rmesa,
  301.                       rmesa->radeon.swtcl.vertex_size,
  302.                       rmesa->radeon.swtcl.bo,
  303.                       current_offset);
  304.  
  305.  
  306.    r200EmitVbufPrim( rmesa,
  307.                      rmesa->radeon.swtcl.hw_primitive,
  308.                      rmesa->radeon.swtcl.numverts);
  309.    if ( rmesa->radeon.swtcl.emit_prediction < rmesa->radeon.cmdbuf.cs->cdw )
  310.       WARN_ONCE("Rendering was %d commands larger than predicted size."
  311.             " We might overflow  command buffer.\n",
  312.             rmesa->radeon.cmdbuf.cs->cdw - rmesa->radeon.swtcl.emit_prediction );
  313.  
  314.    rmesa->radeon.swtcl.emit_prediction = 0;
  315.  
  316. }
  317.  
  318. /**************************************************************************/
  319.  
  320.  
  321. static INLINE GLuint reduced_hw_prim( struct gl_context *ctx, GLuint prim)
  322. {
  323.    switch (prim) {
  324.    case GL_POINTS:
  325.       return ((!ctx->Point.SmoothFlag) ?
  326.          R200_VF_PRIM_POINT_SPRITES : R200_VF_PRIM_POINTS);
  327.    case GL_LINES:
  328.    /* fallthrough */
  329.    case GL_LINE_LOOP:
  330.    /* fallthrough */
  331.    case GL_LINE_STRIP:
  332.       return R200_VF_PRIM_LINES;
  333.    default:
  334.    /* all others reduced to triangles */
  335.       return R200_VF_PRIM_TRIANGLES;
  336.    }
  337. }
  338.  
  339.  
  340. static void r200RasterPrimitive( struct gl_context *ctx, GLuint hwprim );
  341. static void r200RenderPrimitive( struct gl_context *ctx, GLenum prim );
  342. static void r200ResetLineStipple( struct gl_context *ctx );
  343.  
  344. /***********************************************************************
  345.  *                    Emit primitives as inline vertices               *
  346.  ***********************************************************************/
  347.  
  348. #define HAVE_POINTS      1
  349. #define HAVE_LINES       1
  350. #define HAVE_LINE_STRIPS 1
  351. #define HAVE_TRIANGLES   1
  352. #define HAVE_TRI_STRIPS  1
  353. #define HAVE_TRI_STRIP_1 0
  354. #define HAVE_TRI_FANS    1
  355. #define HAVE_QUADS       0
  356. #define HAVE_QUAD_STRIPS 0
  357. #define HAVE_POLYGONS    1
  358. #define HAVE_ELTS        0
  359.  
  360. static void* r200_alloc_verts( r200ContextPtr rmesa, GLuint n, GLuint size)
  361. {
  362.    void *rv;
  363.    do {
  364.       r200_predict_emit_size( rmesa );
  365.       rv = rcommonAllocDmaLowVerts( &rmesa->radeon, n, size * 4 );
  366.    } while(!rv);
  367.    return rv;
  368. }
  369.  
  370. #undef LOCAL_VARS
  371. #undef ALLOC_VERTS
  372. #define CTX_ARG r200ContextPtr rmesa
  373. #define GET_VERTEX_DWORDS() rmesa->radeon.swtcl.vertex_size
  374. #define ALLOC_VERTS( n, size ) r200_alloc_verts(rmesa, n, size)
  375. #define LOCAL_VARS                                              \
  376.    r200ContextPtr rmesa = R200_CONTEXT(ctx);            \
  377.    const char *r200verts = (char *)rmesa->radeon.swtcl.verts;
  378. #define VERT(x) (radeonVertex *)(r200verts + ((x) * vertsize * sizeof(int)))
  379. #define VERTEX radeonVertex
  380. #define DO_DEBUG_VERTS (1 && (R200_DEBUG & RADEON_VERTS))
  381.  
  382. #undef TAG
  383. #define TAG(x) r200_##x
  384. #include "tnl_dd/t_dd_triemit.h"
  385.  
  386.  
  387. /***********************************************************************
  388.  *          Macros for t_dd_tritmp.h to draw basic primitives          *
  389.  ***********************************************************************/
  390.  
  391. #define QUAD( a, b, c, d ) r200_quad( rmesa, a, b, c, d )
  392. #define TRI( a, b, c )     r200_triangle( rmesa, a, b, c )
  393. #define LINE( a, b )       r200_line( rmesa, a, b )
  394. #define POINT( a )         r200_point( rmesa, a )
  395.  
  396. /***********************************************************************
  397.  *              Build render functions from dd templates               *
  398.  ***********************************************************************/
  399.  
  400. #define R200_TWOSIDE_BIT        0x01
  401. #define R200_UNFILLED_BIT       0x02
  402. #define R200_MAX_TRIFUNC        0x04
  403.  
  404.  
  405. static struct {
  406.    tnl_points_func              points;
  407.    tnl_line_func                line;
  408.    tnl_triangle_func    triangle;
  409.    tnl_quad_func                quad;
  410. } rast_tab[R200_MAX_TRIFUNC];
  411.  
  412.  
  413. #define DO_FALLBACK  0
  414. #define DO_UNFILLED (IND & R200_UNFILLED_BIT)
  415. #define DO_TWOSIDE  (IND & R200_TWOSIDE_BIT)
  416. #define DO_FLAT      0
  417. #define DO_OFFSET     0
  418. #define DO_TRI       1
  419. #define DO_QUAD      1
  420. #define DO_LINE      1
  421. #define DO_POINTS    1
  422. #define DO_FULL_QUAD 1
  423.  
  424. #define HAVE_SPEC   1
  425. #define HAVE_BACK_COLORS  0
  426. #define HAVE_HW_FLATSHADE 1
  427. #define TAB rast_tab
  428.  
  429. #define DEPTH_SCALE 1.0
  430. #define UNFILLED_TRI unfilled_tri
  431. #define UNFILLED_QUAD unfilled_quad
  432. #define VERT_X(_v) _v->v.x
  433. #define VERT_Y(_v) _v->v.y
  434. #define VERT_Z(_v) _v->v.z
  435. #define AREA_IS_CCW( a ) (a < 0)
  436. #define GET_VERTEX(e) (rmesa->radeon.swtcl.verts + (e*rmesa->radeon.swtcl.vertex_size*sizeof(int)))
  437.  
  438. #define VERT_SET_RGBA( v, c )                                   \
  439. do {                                                            \
  440.    radeon_color_t *color = (radeon_color_t *)&((v)->ui[coloroffset]);   \
  441.    UNCLAMPED_FLOAT_TO_UBYTE(color->red, (c)[0]);                \
  442.    UNCLAMPED_FLOAT_TO_UBYTE(color->green, (c)[1]);              \
  443.    UNCLAMPED_FLOAT_TO_UBYTE(color->blue, (c)[2]);               \
  444.    UNCLAMPED_FLOAT_TO_UBYTE(color->alpha, (c)[3]);              \
  445. } while (0)
  446.  
  447. #define VERT_COPY_RGBA( v0, v1 ) v0->ui[coloroffset] = v1->ui[coloroffset]
  448.  
  449. #define VERT_SET_SPEC( v, c )                                   \
  450. do {                                                            \
  451.    if (specoffset) {                                            \
  452.       radeon_color_t *spec = (radeon_color_t *)&((v)->ui[specoffset]);  \
  453.       UNCLAMPED_FLOAT_TO_UBYTE(spec->red, (c)[0]);      \
  454.       UNCLAMPED_FLOAT_TO_UBYTE(spec->green, (c)[1]);    \
  455.       UNCLAMPED_FLOAT_TO_UBYTE(spec->blue, (c)[2]);     \
  456.    }                                                            \
  457. } while (0)
  458. #define VERT_COPY_SPEC( v0, v1 )                        \
  459. do {                                                    \
  460.    if (specoffset) {                                    \
  461.       radeon_color_t *spec0 = (radeon_color_t *)&((v0)->ui[specoffset]);        \
  462.       radeon_color_t *spec1 = (radeon_color_t *)&((v1)->ui[specoffset]);        \
  463.       spec0->red   = spec1->red;        \
  464.       spec0->green = spec1->green;      \
  465.       spec0->blue  = spec1->blue;       \
  466.    }                                                    \
  467. } while (0)
  468.  
  469. /* These don't need LE32_TO_CPU() as they used to save and restore
  470.  * colors which are already in the correct format.
  471.  */
  472. #define VERT_SAVE_RGBA( idx )    color[idx] = v[idx]->ui[coloroffset]
  473. #define VERT_RESTORE_RGBA( idx ) v[idx]->ui[coloroffset] = color[idx]
  474. #define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
  475. #define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
  476.  
  477. #undef LOCAL_VARS
  478. #undef TAG
  479. #undef INIT
  480.  
  481. #define LOCAL_VARS(n)                                                   \
  482.    r200ContextPtr rmesa = R200_CONTEXT(ctx);                    \
  483.    GLuint color[n] = {0}, spec[n] = {0};                                                \
  484.    GLuint coloroffset = rmesa->swtcl.coloroffset;       \
  485.    GLuint specoffset = rmesa->swtcl.specoffset;                 \
  486.    (void) color; (void) spec; (void) coloroffset; (void) specoffset;
  487.  
  488. /***********************************************************************
  489.  *                Helpers for rendering unfilled primitives            *
  490.  ***********************************************************************/
  491.  
  492. #define RASTERIZE(x) r200RasterPrimitive( ctx, reduced_hw_prim(ctx, x) )
  493. #define RENDER_PRIMITIVE rmesa->radeon.swtcl.render_primitive
  494. #undef TAG
  495. #define TAG(x) x
  496. #include "tnl_dd/t_dd_unfilled.h"
  497. #undef IND
  498.  
  499.  
  500. /***********************************************************************
  501.  *                      Generate GL render functions                   *
  502.  ***********************************************************************/
  503.  
  504.  
  505. #define IND (0)
  506. #define TAG(x) x
  507. #include "tnl_dd/t_dd_tritmp.h"
  508.  
  509. #define IND (R200_TWOSIDE_BIT)
  510. #define TAG(x) x##_twoside
  511. #include "tnl_dd/t_dd_tritmp.h"
  512.  
  513. #define IND (R200_UNFILLED_BIT)
  514. #define TAG(x) x##_unfilled
  515. #include "tnl_dd/t_dd_tritmp.h"
  516.  
  517. #define IND (R200_TWOSIDE_BIT|R200_UNFILLED_BIT)
  518. #define TAG(x) x##_twoside_unfilled
  519. #include "tnl_dd/t_dd_tritmp.h"
  520.  
  521.  
  522. static void init_rast_tab( void )
  523. {
  524.    init();
  525.    init_twoside();
  526.    init_unfilled();
  527.    init_twoside_unfilled();
  528. }
  529.  
  530. /**********************************************************************/
  531. /*               Render unclipped begin/end objects                   */
  532. /**********************************************************************/
  533.  
  534. #define RENDER_POINTS( start, count )           \
  535.    for ( ; start < count ; start++)             \
  536.       r200_point( rmesa, VERT(start) )
  537. #define RENDER_LINE( v0, v1 ) \
  538.    r200_line( rmesa, VERT(v0), VERT(v1) )
  539. #define RENDER_TRI( v0, v1, v2 )  \
  540.    r200_triangle( rmesa, VERT(v0), VERT(v1), VERT(v2) )
  541. #define RENDER_QUAD( v0, v1, v2, v3 ) \
  542.    r200_quad( rmesa, VERT(v0), VERT(v1), VERT(v2), VERT(v3) )
  543. #define INIT(x) do {                                    \
  544.    r200RenderPrimitive( ctx, x );                       \
  545. } while (0)
  546. #undef LOCAL_VARS
  547. #define LOCAL_VARS                                              \
  548.    r200ContextPtr rmesa = R200_CONTEXT(ctx);            \
  549.    const GLuint vertsize = rmesa->radeon.swtcl.vertex_size;             \
  550.    const char *r200verts = (char *)rmesa->radeon.swtcl.verts;           \
  551.    const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;        \
  552.    const GLboolean stipple = ctx->Line.StippleFlag;             \
  553.    (void) elt; (void) stipple;
  554. #define RESET_STIPPLE   if ( stipple ) r200ResetLineStipple( ctx );
  555. #define RESET_OCCLUSION
  556. #define PRESERVE_VB_DEFS
  557. #define ELT(x) (x)
  558. #define TAG(x) r200_##x##_verts
  559. #include "tnl/t_vb_rendertmp.h"
  560. #undef ELT
  561. #undef TAG
  562. #define TAG(x) r200_##x##_elts
  563. #define ELT(x) elt[x]
  564. #include "tnl/t_vb_rendertmp.h"
  565.  
  566.  
  567.  
  568. /**********************************************************************/
  569. /*                    Choose render functions                         */
  570. /**********************************************************************/
  571.  
  572. void r200ChooseRenderState( struct gl_context *ctx )
  573. {
  574.    TNLcontext *tnl = TNL_CONTEXT(ctx);
  575.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  576.    GLuint index = 0;
  577.    GLboolean unfilled = (ctx->Polygon.FrontMode != GL_FILL ||
  578.                          ctx->Polygon.BackMode != GL_FILL);
  579.    GLboolean twosided = ctx->Light.Enabled && ctx->Light.Model.TwoSide;
  580.  
  581.    if (!rmesa->radeon.TclFallback || rmesa->radeon.Fallback)
  582.       return;
  583.  
  584.    if (twosided)
  585.       index |= R200_TWOSIDE_BIT;
  586.    if (unfilled)
  587.       index |= R200_UNFILLED_BIT;
  588.  
  589.    if (index != rmesa->radeon.swtcl.RenderIndex) {
  590.       tnl->Driver.Render.Points = rast_tab[index].points;
  591.       tnl->Driver.Render.Line = rast_tab[index].line;
  592.       tnl->Driver.Render.ClippedLine = rast_tab[index].line;
  593.       tnl->Driver.Render.Triangle = rast_tab[index].triangle;
  594.       tnl->Driver.Render.Quad = rast_tab[index].quad;
  595.  
  596.       if (index == 0) {
  597.          tnl->Driver.Render.PrimTabVerts = r200_render_tab_verts;
  598.          tnl->Driver.Render.PrimTabElts = r200_render_tab_elts;
  599.          tnl->Driver.Render.ClippedPolygon = r200_fast_clipped_poly;
  600.       } else {
  601.          tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
  602.          tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
  603.          tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon;
  604.       }
  605.  
  606.       rmesa->radeon.swtcl.RenderIndex = index;
  607.    }
  608. }
  609.  
  610.  
  611. /**********************************************************************/
  612. /*                 High level hooks for t_vb_render.c                 */
  613. /**********************************************************************/
  614.  
  615.  
  616. static void r200RasterPrimitive( struct gl_context *ctx, GLuint hwprim )
  617. {
  618.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  619.  
  620.    radeon_prepare_render(&rmesa->radeon);
  621.    if (rmesa->radeon.NewGLState)
  622.       r200ValidateState( ctx );
  623.  
  624.  
  625.    if (rmesa->radeon.swtcl.hw_primitive != hwprim) {
  626.       /* need to disable perspective-correct texturing for point sprites */
  627.       if ((hwprim & 0xf) == R200_VF_PRIM_POINT_SPRITES && ctx->Point.PointSprite) {
  628.          if (rmesa->hw.set.cmd[SET_RE_CNTL] & R200_PERSPECTIVE_ENABLE) {
  629.             R200_STATECHANGE( rmesa, set );
  630.             rmesa->hw.set.cmd[SET_RE_CNTL] &= ~R200_PERSPECTIVE_ENABLE;
  631.          }
  632.       }
  633.       else if (!(rmesa->hw.set.cmd[SET_RE_CNTL] & R200_PERSPECTIVE_ENABLE)) {
  634.          R200_STATECHANGE( rmesa, set );
  635.          rmesa->hw.set.cmd[SET_RE_CNTL] |= R200_PERSPECTIVE_ENABLE;
  636.       }
  637.       R200_NEWPRIM( rmesa );
  638.       rmesa->radeon.swtcl.hw_primitive = hwprim;
  639.    }
  640. }
  641.  
  642. static void r200RenderPrimitive( struct gl_context *ctx, GLenum prim )
  643. {
  644.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  645.    GLboolean unfilled = (ctx->Polygon.FrontMode != GL_FILL ||
  646.                          ctx->Polygon.BackMode != GL_FILL);
  647.  
  648.    rmesa->radeon.swtcl.render_primitive = prim;
  649.    if (prim < GL_TRIANGLES || !unfilled)
  650.       r200RasterPrimitive( ctx, reduced_hw_prim(ctx, prim) );
  651. }
  652.  
  653. static void r200RenderFinish( struct gl_context *ctx )
  654. {
  655. }
  656.  
  657. static void r200ResetLineStipple( struct gl_context *ctx )
  658. {
  659.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  660.    R200_STATECHANGE( rmesa, lin );
  661. }
  662.  
  663.  
  664. /**********************************************************************/
  665. /*           Transition to/from hardware rasterization.               */
  666. /**********************************************************************/
  667.  
  668. static const char * const fallbackStrings[] = {
  669.    "Texture mode",
  670.    "glDrawBuffer(GL_FRONT_AND_BACK)",
  671.    "glEnable(GL_STENCIL) without hw stencil buffer",
  672.    "glRenderMode(selection or feedback)",
  673.    "R200_NO_RAST",
  674.    "Mixing GL_CLAMP_TO_BORDER and GL_CLAMP (or GL_MIRROR_CLAMP_ATI)"
  675. };
  676.  
  677.  
  678. static const char *getFallbackString(GLuint bit)
  679. {
  680.    int i = 0;
  681.    while (bit > 1) {
  682.       i++;
  683.       bit >>= 1;
  684.    }
  685.    return fallbackStrings[i];
  686. }
  687.  
  688.  
  689. void r200Fallback( struct gl_context *ctx, GLuint bit, GLboolean mode )
  690. {
  691.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  692.    TNLcontext *tnl = TNL_CONTEXT(ctx);
  693.    GLuint oldfallback = rmesa->radeon.Fallback;
  694.  
  695.    if (mode) {
  696.       rmesa->radeon.Fallback |= bit;
  697.       if (oldfallback == 0) {
  698.          radeon_firevertices(&rmesa->radeon);
  699.          TCL_FALLBACK( ctx, R200_TCL_FALLBACK_RASTER, GL_TRUE );
  700.          _swsetup_Wakeup( ctx );
  701.          rmesa->radeon.swtcl.RenderIndex = ~0;
  702.          if (R200_DEBUG & RADEON_FALLBACKS) {
  703.             fprintf(stderr, "R200 begin rasterization fallback: 0x%x %s\n",
  704.                     bit, getFallbackString(bit));
  705.          }
  706.       }
  707.    }
  708.    else {
  709.       rmesa->radeon.Fallback &= ~bit;
  710.       if (oldfallback == bit) {
  711.  
  712.          _swrast_flush( ctx );
  713.          tnl->Driver.Render.Start = r200RenderStart;
  714.          tnl->Driver.Render.PrimitiveNotify = r200RenderPrimitive;
  715.          tnl->Driver.Render.Finish = r200RenderFinish;
  716.  
  717.          tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
  718.          tnl->Driver.Render.CopyPV = _tnl_copy_pv;
  719.          tnl->Driver.Render.Interp = _tnl_interp;
  720.  
  721.          tnl->Driver.Render.ResetLineStipple = r200ResetLineStipple;
  722.          TCL_FALLBACK( ctx, R200_TCL_FALLBACK_RASTER, GL_FALSE );
  723.          if (rmesa->radeon.TclFallback) {
  724.             /* These are already done if rmesa->radeon.TclFallback goes to
  725.              * zero above. But not if it doesn't (R200_NO_TCL for
  726.              * example?)
  727.              */
  728.             _tnl_invalidate_vertex_state( ctx, ~0 );
  729.             _tnl_invalidate_vertices( ctx, ~0 );
  730.             rmesa->radeon.tnl_index_bitset = 0;
  731.             r200ChooseVertexState( ctx );
  732.             r200ChooseRenderState( ctx );
  733.          }
  734.          if (R200_DEBUG & RADEON_FALLBACKS) {
  735.             fprintf(stderr, "R200 end rasterization fallback: 0x%x %s\n",
  736.                     bit, getFallbackString(bit));
  737.          }
  738.       }
  739.    }
  740. }
  741.  
  742.  
  743.  
  744.  
  745. /**
  746.  * Cope with depth operations by drawing individual pixels as points.
  747.  *
  748.  * \todo
  749.  * The way the vertex state is set in this routine is hokey.  It seems to
  750.  * work, but it's very hackish.  This whole routine is pretty hackish.  If
  751.  * the bitmap is small enough, it seems like it would be faster to copy it
  752.  * to AGP memory and use it as a non-power-of-two texture (i.e.,
  753.  * NV_texture_rectangle).
  754.  */
  755. void
  756. r200PointsBitmap( struct gl_context *ctx, GLint px, GLint py,
  757.                   GLsizei width, GLsizei height,
  758.                   const struct gl_pixelstore_attrib *unpack,
  759.                   const GLubyte *bitmap )
  760. {
  761.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  762.    const GLfloat *rc = ctx->Current.RasterColor;
  763.    GLint row, col;
  764.    radeonVertex vert;
  765.    GLuint orig_vte;
  766.    GLuint h;
  767.  
  768.  
  769.    /* Turn off tcl.
  770.     */
  771.    TCL_FALLBACK( ctx, R200_TCL_FALLBACK_BITMAP, 1 );
  772.  
  773.    /* Choose tiny vertex format
  774.     */
  775.    {
  776.       const GLuint fmt_0 = R200_VTX_XY | R200_VTX_Z0 | R200_VTX_W0
  777.           | (R200_VTX_PK_RGBA << R200_VTX_COLOR_0_SHIFT);
  778.       const GLuint fmt_1 = 0;
  779.       GLuint vte = rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL];
  780.       GLuint vap = rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL];
  781.  
  782.       vte &= ~(R200_VTX_XY_FMT | R200_VTX_Z_FMT);
  783.       vte |= R200_VTX_W0_FMT;
  784.       vap &= ~R200_VAP_FORCE_W_TO_ONE;
  785.  
  786.       rmesa->radeon.swtcl.vertex_size = 5;
  787.  
  788.       if ( (rmesa->hw.vtx.cmd[VTX_VTXFMT_0] != fmt_0)
  789.            || (rmesa->hw.vtx.cmd[VTX_VTXFMT_1] != fmt_1) ) {
  790.          R200_NEWPRIM(rmesa);
  791.          R200_STATECHANGE( rmesa, vtx );
  792.          rmesa->hw.vtx.cmd[VTX_VTXFMT_0] = fmt_0;
  793.          rmesa->hw.vtx.cmd[VTX_VTXFMT_1] = fmt_1;
  794.       }
  795.  
  796.       if (vte != rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL]) {
  797.          R200_STATECHANGE( rmesa, vte );
  798.          rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] = vte;
  799.       }
  800.  
  801.       if (vap != rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL]) {
  802.          R200_STATECHANGE( rmesa, vap );
  803.          rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] = vap;
  804.       }
  805.    }
  806.  
  807.    /* Ready for point primitives:
  808.     */
  809.    r200RenderPrimitive( ctx, GL_POINTS );
  810.  
  811.    /* Turn off the hw viewport transformation:
  812.     */
  813.    R200_STATECHANGE( rmesa, vte );
  814.    orig_vte = rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL];
  815.    rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] &= ~(R200_VPORT_X_SCALE_ENA |
  816.                                            R200_VPORT_Y_SCALE_ENA |
  817.                                            R200_VPORT_Z_SCALE_ENA |
  818.                                            R200_VPORT_X_OFFSET_ENA |
  819.                                            R200_VPORT_Y_OFFSET_ENA |
  820.                                            R200_VPORT_Z_OFFSET_ENA);
  821.  
  822.    /* Turn off other stuff:  Stipple?, texture?, blending?, etc.
  823.     */
  824.  
  825.  
  826.    /* Populate the vertex
  827.     *
  828.     * Incorporate FOG into RGBA
  829.     */
  830.    if (ctx->Fog.Enabled) {
  831.       const GLfloat *fc = ctx->Fog.Color;
  832.       GLfloat color[4];
  833.       GLfloat f;
  834.  
  835.       if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
  836.          f = _swrast_z_to_fogfactor(ctx, ctx->Current.Attrib[VERT_ATTRIB_FOG][0]);
  837.       else
  838.          f = _swrast_z_to_fogfactor(ctx, ctx->Current.RasterDistance);
  839.  
  840.       color[0] = f * rc[0] + (1.F - f) * fc[0];
  841.       color[1] = f * rc[1] + (1.F - f) * fc[1];
  842.       color[2] = f * rc[2] + (1.F - f) * fc[2];
  843.       color[3] = rc[3];
  844.  
  845.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.red,   color[0]);
  846.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.green, color[1]);
  847.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.blue,  color[2]);
  848.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.alpha, color[3]);
  849.    }
  850.    else {
  851.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.red,   rc[0]);
  852.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.green, rc[1]);
  853.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.blue,  rc[2]);
  854.       UNCLAMPED_FLOAT_TO_CHAN(vert.tv.color.alpha, rc[3]);
  855.    }
  856.  
  857.  
  858.    vert.tv.z = ctx->Current.RasterPos[2];
  859.  
  860.  
  861.    /* Update window height
  862.     */
  863.    h = radeon_get_drawable(&rmesa->radeon)->h;
  864.  
  865.    /* Clipping handled by existing mechansims in r200_ioctl.c?
  866.     */
  867.    for (row=0; row<height; row++) {
  868.       const GLubyte *src = (const GLubyte *)
  869.          _mesa_image_address2d(unpack, bitmap, width, height,
  870.                                GL_COLOR_INDEX, GL_BITMAP, row, 0 );
  871.  
  872.       if (unpack->LsbFirst) {
  873.          /* Lsb first */
  874.          GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
  875.          for (col=0; col<width; col++) {
  876.             if (*src & mask) {
  877.                vert.tv.x = px+col;
  878.                vert.tv.y = h - (py+row) - 1;
  879.                r200_point( rmesa, &vert );
  880.             }
  881.             src += (mask >> 7);
  882.             mask = ((mask << 1) & 0xff) | (mask >> 7);
  883.          }
  884.  
  885.          /* get ready for next row */
  886.          if (mask != 1)
  887.             src++;
  888.       }
  889.       else {
  890.          /* Msb first */
  891.          GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
  892.          for (col=0; col<width; col++) {
  893.             if (*src & mask) {
  894.                vert.tv.x = px+col;
  895.                vert.tv.y = h - (py+row) - 1;
  896.                r200_point( rmesa, &vert );
  897.             }
  898.             src += mask & 1;
  899.             mask = ((mask << 7) & 0xff) | (mask >> 1);
  900.          }
  901.          /* get ready for next row */
  902.          if (mask != 128)
  903.             src++;
  904.       }
  905.    }
  906.  
  907.    /* Fire outstanding vertices, restore state
  908.     */
  909.    R200_STATECHANGE( rmesa, vte );
  910.    rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] = orig_vte;
  911.  
  912.    /* Unfallback
  913.     */
  914.    TCL_FALLBACK( ctx, R200_TCL_FALLBACK_BITMAP, 0 );
  915.  
  916.    /* Need to restore vertexformat?
  917.     */
  918.    if (rmesa->radeon.TclFallback)
  919.       r200ChooseVertexState( ctx );
  920. }
  921.  
  922.  
  923.  
  924. /**********************************************************************/
  925. /*                            Initialization.                         */
  926. /**********************************************************************/
  927.  
  928. void r200InitSwtcl( struct gl_context *ctx )
  929. {
  930.    TNLcontext *tnl = TNL_CONTEXT(ctx);
  931.    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  932.    static int firsttime = 1;
  933.  
  934.    if (firsttime) {
  935.       init_rast_tab();
  936.       firsttime = 0;
  937.    }
  938.    rmesa->radeon.swtcl.emit_prediction = 0;
  939.  
  940.    tnl->Driver.Render.Start = r200RenderStart;
  941.    tnl->Driver.Render.Finish = r200RenderFinish;
  942.    tnl->Driver.Render.PrimitiveNotify = r200RenderPrimitive;
  943.    tnl->Driver.Render.ResetLineStipple = r200ResetLineStipple;
  944.    tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
  945.    tnl->Driver.Render.CopyPV = _tnl_copy_pv;
  946.    tnl->Driver.Render.Interp = _tnl_interp;
  947.  
  948.    /* FIXME: what are these numbers? */
  949.    _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
  950.                        36 * sizeof(GLfloat) );
  951.  
  952.    rmesa->radeon.swtcl.verts = (GLubyte *)tnl->clipspace.vertex_buf;
  953.    rmesa->radeon.swtcl.RenderIndex = ~0;
  954.    rmesa->radeon.swtcl.render_primitive = GL_TRIANGLES;
  955.    rmesa->radeon.swtcl.hw_primitive = 0;
  956. }
  957.  
  958.