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      1 /*
      2  * Copyright 2008 Corbin Simpson <MostAwesomeDude (at) gmail.com>
      3  * Copyright 2009 Marek Olk <maraeo (at) gmail.com>
      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  * on the rights to use, copy, modify, merge, publish, distribute, sub
      9  * license, and/or sell copies of the Software, and to permit persons to whom
     10  * the Software is furnished to do so, subject to the following conditions:
     11  *
     12  * The above copyright notice and this permission notice (including the next
     13  * paragraph) shall be included in all copies or substantial portions of the
     14  * 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  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
     20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
     23 
     24 /* r300_emit: Functions for emitting state. */
     25 
     26 #include "util/u_format.h"
     27 #include "util/u_math.h"
     28 #include "util/u_mm.h"
     29 
     30 #include "r300_context.h"
     31 #include "r300_cb.h"
     32 #include "r300_cs.h"
     33 #include "r300_emit.h"
     34 #include "r300_fs.h"
     35 #include "r300_screen.h"
     36 #include "r300_screen_buffer.h"
     37 #include "r300_vs.h"
     38 
     39 void r300_emit_blend_state(struct r300_context* r300,
     40                            unsigned size, void* state)
     41 {
     42     struct r300_blend_state* blend = (struct r300_blend_state*)state;
     43     struct pipe_framebuffer_state* fb =
     44         (struct pipe_framebuffer_state*)r300->fb_state.state;
     45     struct pipe_surface *cb;
     46     CS_LOCALS(r300);
     47 
     48     cb = fb->nr_cbufs ? r300_get_nonnull_cb(fb, 0) : NULL;
     49 
     50     if (cb) {
     51         if (cb->format == PIPE_FORMAT_R16G16B16A16_FLOAT) {
     52             WRITE_CS_TABLE(blend->cb_noclamp, size);
     53         } else if (cb->format == PIPE_FORMAT_R16G16B16X16_FLOAT) {
     54             WRITE_CS_TABLE(blend->cb_noclamp_noalpha, size);
     55         } else {
     56             unsigned swz = r300_surface(cb)->colormask_swizzle;
     57             WRITE_CS_TABLE(blend->cb_clamp[swz], size);
     58         }
     59     } else {
     60         WRITE_CS_TABLE(blend->cb_no_readwrite, size);
     61     }
     62 }
     63 
     64 void r300_emit_blend_color_state(struct r300_context* r300,
     65                                  unsigned size, void* state)
     66 {
     67     struct r300_blend_color_state* bc = (struct r300_blend_color_state*)state;
     68     CS_LOCALS(r300);
     69 
     70     WRITE_CS_TABLE(bc->cb, size);
     71 }
     72 
     73 void r300_emit_clip_state(struct r300_context* r300,
     74                           unsigned size, void* state)
     75 {
     76     struct r300_clip_state* clip = (struct r300_clip_state*)state;
     77     CS_LOCALS(r300);
     78 
     79     WRITE_CS_TABLE(clip->cb, size);
     80 }
     81 
     82 void r300_emit_dsa_state(struct r300_context* r300, unsigned size, void* state)
     83 {
     84     struct r300_dsa_state* dsa = (struct r300_dsa_state*)state;
     85     struct pipe_framebuffer_state* fb =
     86         (struct pipe_framebuffer_state*)r300->fb_state.state;
     87     boolean is_r500 = r300->screen->caps.is_r500;
     88     CS_LOCALS(r300);
     89     uint32_t alpha_func = dsa->alpha_function;
     90 
     91     /* Choose the alpha ref value between 8-bit (FG_ALPHA_FUNC.AM_VAL) and
     92      * 16-bit (FG_ALPHA_VALUE). */
     93     if (is_r500 && (alpha_func & R300_FG_ALPHA_FUNC_ENABLE)) {
     94         struct pipe_surface *cb = fb->nr_cbufs ? r300_get_nonnull_cb(fb, 0) : NULL;
     95 
     96         if (cb &&
     97             (cb->format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
     98              cb->format == PIPE_FORMAT_R16G16B16X16_FLOAT)) {
     99             alpha_func |= R500_FG_ALPHA_FUNC_FP16_ENABLE;
    100         } else {
    101             alpha_func |= R500_FG_ALPHA_FUNC_8BIT;
    102         }
    103     }
    104 
    105     /* Setup alpha-to-coverage. */
    106     if (r300->alpha_to_coverage && r300->msaa_enable) {
    107         /* Always set 3/6, it improves precision even for 2x and 4x MSAA. */
    108         alpha_func |= R300_FG_ALPHA_FUNC_MASK_ENABLE |
    109                       R300_FG_ALPHA_FUNC_CFG_3_OF_6;
    110     }
    111 
    112     BEGIN_CS(size);
    113     OUT_CS_REG(R300_FG_ALPHA_FUNC, alpha_func);
    114     OUT_CS_TABLE(fb->zsbuf ? &dsa->cb_begin : dsa->cb_zb_no_readwrite, size-2);
    115     END_CS;
    116 }
    117 
    118 static void get_rc_constant_state(
    119     float vec[4],
    120     struct r300_context * r300,
    121     struct rc_constant * constant)
    122 {
    123     struct r300_textures_state* texstate = r300->textures_state.state;
    124     struct r300_resource *tex;
    125 
    126     assert(constant->Type == RC_CONSTANT_STATE);
    127 
    128     /* vec should either be (0, 0, 0, 1), which should be a relatively safe
    129      * RGBA or STRQ value, or it could be one of the RC_CONSTANT_STATE
    130      * state factors. */
    131 
    132     switch (constant->u.State[0]) {
    133         /* Factor for converting rectangle coords to
    134          * normalized coords. Should only show up on non-r500. */
    135         case RC_STATE_R300_TEXRECT_FACTOR:
    136             tex = r300_resource(texstate->sampler_views[constant->u.State[1]]->base.texture);
    137             vec[0] = 1.0 / tex->tex.width0;
    138             vec[1] = 1.0 / tex->tex.height0;
    139             vec[2] = 0;
    140             vec[3] = 1;
    141             break;
    142 
    143         case RC_STATE_R300_TEXSCALE_FACTOR:
    144             tex = r300_resource(texstate->sampler_views[constant->u.State[1]]->base.texture);
    145             /* Add a small number to the texture size to work around rounding errors in hw. */
    146             vec[0] = tex->b.b.width0  / (tex->tex.width0  + 0.001f);
    147             vec[1] = tex->b.b.height0 / (tex->tex.height0 + 0.001f);
    148             vec[2] = tex->b.b.depth0  / (tex->tex.depth0  + 0.001f);
    149             vec[3] = 1;
    150             break;
    151 
    152         case RC_STATE_R300_VIEWPORT_SCALE:
    153             vec[0] = r300->viewport.scale[0];
    154             vec[1] = r300->viewport.scale[1];
    155             vec[2] = r300->viewport.scale[2];
    156             vec[3] = 1;
    157             break;
    158 
    159         case RC_STATE_R300_VIEWPORT_OFFSET:
    160             vec[0] = r300->viewport.translate[0];
    161             vec[1] = r300->viewport.translate[1];
    162             vec[2] = r300->viewport.translate[2];
    163             vec[3] = 1;
    164             break;
    165 
    166         default:
    167             fprintf(stderr, "r300: Implementation error: "
    168                 "Unknown RC_CONSTANT type %d\n", constant->u.State[0]);
    169             vec[0] = 0;
    170             vec[1] = 0;
    171             vec[2] = 0;
    172             vec[3] = 1;
    173     }
    174 }
    175 
    176 /* Convert a normal single-precision float into the 7.16 format
    177  * used by the R300 fragment shader.
    178  */
    179 uint32_t pack_float24(float f)
    180 {
    181     union {
    182         float fl;
    183         uint32_t u;
    184     } u;
    185     float mantissa;
    186     int exponent;
    187     uint32_t float24 = 0;
    188 
    189     if (f == 0.0)
    190         return 0;
    191 
    192     u.fl = f;
    193 
    194     mantissa = frexpf(f, &exponent);
    195 
    196     /* Handle -ve */
    197     if (mantissa < 0) {
    198         float24 |= (1 << 23);
    199         mantissa = mantissa * -1.0;
    200     }
    201     /* Handle exponent, bias of 63 */
    202     exponent += 62;
    203     float24 |= (exponent << 16);
    204     /* Kill 7 LSB of mantissa */
    205     float24 |= (u.u & 0x7FFFFF) >> 7;
    206 
    207     return float24;
    208 }
    209 
    210 void r300_emit_fs(struct r300_context* r300, unsigned size, void *state)
    211 {
    212     struct r300_fragment_shader *fs = r300_fs(r300);
    213     CS_LOCALS(r300);
    214 
    215     WRITE_CS_TABLE(fs->shader->cb_code, fs->shader->cb_code_size);
    216 }
    217 
    218 void r300_emit_fs_constants(struct r300_context* r300, unsigned size, void *state)
    219 {
    220     struct r300_fragment_shader *fs = r300_fs(r300);
    221     struct r300_constant_buffer *buf = (struct r300_constant_buffer*)state;
    222     unsigned count = fs->shader->externals_count;
    223     unsigned i, j;
    224     CS_LOCALS(r300);
    225 
    226     if (count == 0)
    227         return;
    228 
    229     BEGIN_CS(size);
    230     OUT_CS_REG_SEQ(R300_PFS_PARAM_0_X, count * 4);
    231     if (buf->remap_table){
    232         for (i = 0; i < count; i++) {
    233             float *data = (float*)&buf->ptr[buf->remap_table[i]*4];
    234             for (j = 0; j < 4; j++)
    235                 OUT_CS(pack_float24(data[j]));
    236         }
    237     } else {
    238         for (i = 0; i < count; i++)
    239             for (j = 0; j < 4; j++)
    240                 OUT_CS(pack_float24(*(float*)&buf->ptr[i*4+j]));
    241     }
    242 
    243     END_CS;
    244 }
    245 
    246 void r300_emit_fs_rc_constant_state(struct r300_context* r300, unsigned size, void *state)
    247 {
    248     struct r300_fragment_shader *fs = r300_fs(r300);
    249     struct rc_constant_list *constants = &fs->shader->code.constants;
    250     unsigned i;
    251     unsigned count = fs->shader->rc_state_count;
    252     unsigned first = fs->shader->externals_count;
    253     unsigned end = constants->Count;
    254     unsigned j;
    255     CS_LOCALS(r300);
    256 
    257     if (count == 0)
    258         return;
    259 
    260     BEGIN_CS(size);
    261     for(i = first; i < end; ++i) {
    262         if (constants->Constants[i].Type == RC_CONSTANT_STATE) {
    263             float data[4];
    264 
    265             get_rc_constant_state(data, r300, &constants->Constants[i]);
    266 
    267             OUT_CS_REG_SEQ(R300_PFS_PARAM_0_X + i * 16, 4);
    268             for (j = 0; j < 4; j++)
    269                 OUT_CS(pack_float24(data[j]));
    270         }
    271     }
    272     END_CS;
    273 }
    274 
    275 void r500_emit_fs(struct r300_context* r300, unsigned size, void *state)
    276 {
    277     struct r300_fragment_shader *fs = r300_fs(r300);
    278     CS_LOCALS(r300);
    279 
    280     WRITE_CS_TABLE(fs->shader->cb_code, fs->shader->cb_code_size);
    281 }
    282 
    283 void r500_emit_fs_constants(struct r300_context* r300, unsigned size, void *state)
    284 {
    285     struct r300_fragment_shader *fs = r300_fs(r300);
    286     struct r300_constant_buffer *buf = (struct r300_constant_buffer*)state;
    287     unsigned count = fs->shader->externals_count;
    288     CS_LOCALS(r300);
    289 
    290     if (count == 0)
    291         return;
    292 
    293     BEGIN_CS(size);
    294     OUT_CS_REG(R500_GA_US_VECTOR_INDEX, R500_GA_US_VECTOR_INDEX_TYPE_CONST);
    295     OUT_CS_ONE_REG(R500_GA_US_VECTOR_DATA, count * 4);
    296     if (buf->remap_table){
    297         for (unsigned i = 0; i < count; i++) {
    298             uint32_t *data = &buf->ptr[buf->remap_table[i]*4];
    299             OUT_CS_TABLE(data, 4);
    300         }
    301     } else {
    302         OUT_CS_TABLE(buf->ptr, count * 4);
    303     }
    304     END_CS;
    305 }
    306 
    307 void r500_emit_fs_rc_constant_state(struct r300_context* r300, unsigned size, void *state)
    308 {
    309     struct r300_fragment_shader *fs = r300_fs(r300);
    310     struct rc_constant_list *constants = &fs->shader->code.constants;
    311     unsigned i;
    312     unsigned count = fs->shader->rc_state_count;
    313     unsigned first = fs->shader->externals_count;
    314     unsigned end = constants->Count;
    315     CS_LOCALS(r300);
    316 
    317     if (count == 0)
    318         return;
    319 
    320     BEGIN_CS(size);
    321     for(i = first; i < end; ++i) {
    322         if (constants->Constants[i].Type == RC_CONSTANT_STATE) {
    323             float data[4];
    324 
    325             get_rc_constant_state(data, r300, &constants->Constants[i]);
    326 
    327             OUT_CS_REG(R500_GA_US_VECTOR_INDEX,
    328                        R500_GA_US_VECTOR_INDEX_TYPE_CONST |
    329                        (i & R500_GA_US_VECTOR_INDEX_MASK));
    330             OUT_CS_ONE_REG(R500_GA_US_VECTOR_DATA, 4);
    331             OUT_CS_TABLE(data, 4);
    332         }
    333     }
    334     END_CS;
    335 }
    336 
    337 void r300_emit_gpu_flush(struct r300_context *r300, unsigned size, void *state)
    338 {
    339     struct r300_gpu_flush *gpuflush = (struct r300_gpu_flush*)state;
    340     struct pipe_framebuffer_state* fb =
    341             (struct pipe_framebuffer_state*)r300->fb_state.state;
    342     uint32_t height = fb->height;
    343     uint32_t width = fb->width;
    344     CS_LOCALS(r300);
    345 
    346     if (r300->cbzb_clear) {
    347         struct r300_surface *surf = r300_surface(fb->cbufs[0]);
    348 
    349         height = surf->cbzb_height;
    350         width = surf->cbzb_width;
    351     }
    352 
    353     DBG(r300, DBG_SCISSOR,
    354 	"r300: Scissor width: %i, height: %i, CBZB clear: %s\n",
    355 	width, height, r300->cbzb_clear ? "YES" : "NO");
    356 
    357     BEGIN_CS(size);
    358 
    359     /* Set up scissors.
    360      * By writing to the SC registers, SC & US assert idle. */
    361     OUT_CS_REG_SEQ(R300_SC_SCISSORS_TL, 2);
    362     if (r300->screen->caps.is_r500) {
    363         OUT_CS(0);
    364         OUT_CS(((width  - 1) << R300_SCISSORS_X_SHIFT) |
    365                ((height - 1) << R300_SCISSORS_Y_SHIFT));
    366     } else {
    367         OUT_CS((1440 << R300_SCISSORS_X_SHIFT) |
    368                (1440 << R300_SCISSORS_Y_SHIFT));
    369         OUT_CS(((width  + 1440-1) << R300_SCISSORS_X_SHIFT) |
    370                ((height + 1440-1) << R300_SCISSORS_Y_SHIFT));
    371     }
    372 
    373     /* Flush CB & ZB caches and wait until the 3D engine is idle and clean. */
    374     OUT_CS_TABLE(gpuflush->cb_flush_clean, 6);
    375     END_CS;
    376 }
    377 
    378 void r300_emit_aa_state(struct r300_context *r300, unsigned size, void *state)
    379 {
    380     struct r300_aa_state *aa = (struct r300_aa_state*)state;
    381     CS_LOCALS(r300);
    382 
    383     BEGIN_CS(size);
    384     OUT_CS_REG(R300_GB_AA_CONFIG, aa->aa_config);
    385 
    386     if (aa->dest) {
    387         OUT_CS_REG_SEQ(R300_RB3D_AARESOLVE_OFFSET, 3);
    388         OUT_CS(aa->dest->offset);
    389         OUT_CS(aa->dest->pitch & R300_RB3D_AARESOLVE_PITCH_MASK);
    390         OUT_CS(R300_RB3D_AARESOLVE_CTL_AARESOLVE_MODE_RESOLVE |
    391                R300_RB3D_AARESOLVE_CTL_AARESOLVE_ALPHA_AVERAGE);
    392         OUT_CS_RELOC(aa->dest);
    393     } else {
    394         OUT_CS_REG(R300_RB3D_AARESOLVE_CTL, 0);
    395     }
    396 
    397     END_CS;
    398 }
    399 
    400 void r300_emit_fb_state(struct r300_context* r300, unsigned size, void* state)
    401 {
    402     struct pipe_framebuffer_state* fb = (struct pipe_framebuffer_state*)state;
    403     struct r300_surface* surf;
    404     unsigned i;
    405     uint32_t rb3d_cctl = 0;
    406 
    407     CS_LOCALS(r300);
    408 
    409     BEGIN_CS(size);
    410 
    411     if (r300->screen->caps.is_r500) {
    412         rb3d_cctl = R300_RB3D_CCTL_INDEPENDENT_COLORFORMAT_ENABLE_ENABLE;
    413     }
    414     /* NUM_MULTIWRITES replicates COLOR[0] to all colorbuffers. */
    415     if (fb->nr_cbufs && r300->fb_multiwrite) {
    416         rb3d_cctl |= R300_RB3D_CCTL_NUM_MULTIWRITES(fb->nr_cbufs);
    417     }
    418     if (r300->cmask_in_use) {
    419         rb3d_cctl |= R300_RB3D_CCTL_AA_COMPRESSION_ENABLE |
    420                      R300_RB3D_CCTL_CMASK_ENABLE;
    421     }
    422 
    423     OUT_CS_REG(R300_RB3D_CCTL, rb3d_cctl);
    424 
    425     /* Set up colorbuffers. */
    426     for (i = 0; i < fb->nr_cbufs; i++) {
    427         surf = r300_surface(r300_get_nonnull_cb(fb, i));
    428 
    429         OUT_CS_REG(R300_RB3D_COLOROFFSET0 + (4 * i), surf->offset);
    430         OUT_CS_RELOC(surf);
    431 
    432         OUT_CS_REG(R300_RB3D_COLORPITCH0 + (4 * i), surf->pitch);
    433         OUT_CS_RELOC(surf);
    434 
    435         if (r300->cmask_in_use && i == 0) {
    436             OUT_CS_REG(R300_RB3D_CMASK_OFFSET0, 0);
    437             OUT_CS_REG(R300_RB3D_CMASK_PITCH0, surf->pitch_cmask);
    438             OUT_CS_REG(R300_RB3D_COLOR_CLEAR_VALUE, r300->color_clear_value);
    439             if (r300->screen->caps.is_r500 && r300->screen->info.drm_minor >= 29) {
    440                 OUT_CS_REG_SEQ(R500_RB3D_COLOR_CLEAR_VALUE_AR, 2);
    441                 OUT_CS(r300->color_clear_value_ar);
    442                 OUT_CS(r300->color_clear_value_gb);
    443             }
    444         }
    445     }
    446 
    447     /* Set up the ZB part of the CBZB clear. */
    448     if (r300->cbzb_clear) {
    449         surf = r300_surface(fb->cbufs[0]);
    450 
    451         OUT_CS_REG(R300_ZB_FORMAT, surf->cbzb_format);
    452 
    453         OUT_CS_REG(R300_ZB_DEPTHOFFSET, surf->cbzb_midpoint_offset);
    454         OUT_CS_RELOC(surf);
    455 
    456         OUT_CS_REG(R300_ZB_DEPTHPITCH, surf->cbzb_pitch);
    457         OUT_CS_RELOC(surf);
    458 
    459         DBG(r300, DBG_CBZB,
    460             "CBZB clearing cbuf %08x %08x\n", surf->cbzb_format,
    461             surf->cbzb_pitch);
    462     }
    463     /* Set up a zbuffer. */
    464     else if (fb->zsbuf) {
    465         surf = r300_surface(fb->zsbuf);
    466 
    467         OUT_CS_REG(R300_ZB_FORMAT, surf->format);
    468 
    469         OUT_CS_REG(R300_ZB_DEPTHOFFSET, surf->offset);
    470         OUT_CS_RELOC(surf);
    471 
    472         OUT_CS_REG(R300_ZB_DEPTHPITCH, surf->pitch);
    473         OUT_CS_RELOC(surf);
    474 
    475         if (r300->hyperz_enabled) {
    476             /* HiZ RAM. */
    477             OUT_CS_REG(R300_ZB_HIZ_OFFSET, 0);
    478             OUT_CS_REG(R300_ZB_HIZ_PITCH, surf->pitch_hiz);
    479             /* Z Mask RAM. (compressed zbuffer) */
    480             OUT_CS_REG(R300_ZB_ZMASK_OFFSET, 0);
    481             OUT_CS_REG(R300_ZB_ZMASK_PITCH, surf->pitch_zmask);
    482         }
    483     }
    484 
    485     END_CS;
    486 }
    487 
    488 void r300_emit_hyperz_state(struct r300_context *r300,
    489                             unsigned size, void *state)
    490 {
    491     struct r300_hyperz_state *z = state;
    492     CS_LOCALS(r300);
    493 
    494     if (z->flush)
    495         WRITE_CS_TABLE(&z->cb_flush_begin, size);
    496     else
    497         WRITE_CS_TABLE(&z->cb_begin, size - 2);
    498 }
    499 
    500 void r300_emit_hyperz_end(struct r300_context *r300)
    501 {
    502     struct r300_hyperz_state z =
    503             *(struct r300_hyperz_state*)r300->hyperz_state.state;
    504 
    505     z.flush = 1;
    506     z.zb_bw_cntl = 0;
    507     z.zb_depthclearvalue = 0;
    508     z.sc_hyperz = R300_SC_HYPERZ_ADJ_2;
    509     z.gb_z_peq_config = 0;
    510 
    511     r300_emit_hyperz_state(r300, r300->hyperz_state.size, &z);
    512 }
    513 
    514 #define R300_NIBBLES(x0, y0, x1, y1, x2, y2, d0y, d0x)  \
    515     (((x0) & 0xf) | (((y0) & 0xf) << 4) |		   \
    516     (((x1) & 0xf) << 8) | (((y1) & 0xf) << 12) |	   \
    517     (((x2) & 0xf) << 16) | (((y2) & 0xf) << 20) |	   \
    518     (((d0y) & 0xf) << 24) | (((d0x) & 0xf) << 28))
    519 
    520 static unsigned r300_get_mspos(int index, unsigned *p)
    521 {
    522     unsigned reg, i, distx, disty, dist;
    523 
    524     if (index == 0) {
    525         /* MSPOS0 contains positions for samples 0,1,2 as (X,Y) pairs of nibbles,
    526          * followed by a (Y,X) pair containing the minimum distance from the pixel
    527          * edge:
    528          *     X0, Y0, X1, Y1, X2, Y2, D0_Y, D0_X
    529          *
    530          * There is a quirk when setting D0_X. The value represents the distance
    531          * from the left edge of the pixel quad to the first sample in subpixels.
    532          * All values less than eight should use the actual value, but 7 should
    533          * be used for the distance 8. The hardware will convert 7 into 8 internally.
    534          */
    535         distx = 11;
    536         for (i = 0; i < 12; i += 2) {
    537             if (p[i] < distx)
    538                 distx = p[i];
    539         }
    540 
    541         disty = 11;
    542         for (i = 1; i < 12; i += 2) {
    543             if (p[i] < disty)
    544                 disty = p[i];
    545         }
    546 
    547         if (distx == 8)
    548             distx = 7;
    549 
    550         reg = R300_NIBBLES(p[0], p[1], p[2], p[3], p[4], p[5], disty, distx);
    551     } else {
    552         /* MSPOS1 contains positions for samples 3,4,5 as (X,Y) pairs of nibbles,
    553          * followed by the minimum distance from the pixel edge (not sure if X or Y):
    554          *     X3, Y3, X4, Y4, X5, Y5, D1
    555          */
    556         dist = 11;
    557         for (i = 0; i < 12; i++) {
    558             if (p[i] < dist)
    559                 dist = p[i];
    560         }
    561 
    562         reg = R300_NIBBLES(p[6], p[7], p[8], p[9], p[10], p[11], dist, 0);
    563     }
    564     return reg;
    565 }
    566 
    567 void r300_emit_fb_state_pipelined(struct r300_context *r300,
    568                                   unsigned size, void *state)
    569 {
    570     /* The sample coordinates are in the range [0,11], because
    571      * GB_TILE_CONFIG.SUBPIXEL is set to the 1/12 subpixel precision.
    572      *
    573      * Some sample coordinates reach to neighboring pixels and should not be used.
    574      * (e.g. Y=11)
    575      *
    576      * The unused samples must be set to the positions of other valid samples. */
    577     static unsigned sample_locs_1x[12] = {
    578         6,6,  6,6,  6,6,  6,6,  6,6,  6,6
    579     };
    580     static unsigned sample_locs_2x[12] = {
    581         3,9,  9,3,  9,3,  9,3,  9,3,  9,3
    582     };
    583     static unsigned sample_locs_4x[12] = {
    584         4,4,  8,8,  2,10,  10,2,  10,2,  10,2
    585     };
    586     static unsigned sample_locs_6x[12] = {
    587         3,1,  7,3,  11,5,  1,7,  5,9,  9,10
    588     };
    589 
    590     struct pipe_framebuffer_state* fb =
    591             (struct pipe_framebuffer_state*)r300->fb_state.state;
    592     unsigned i, num_cbufs = fb->nr_cbufs;
    593     unsigned mspos0, mspos1;
    594     CS_LOCALS(r300);
    595 
    596     /* If we use the multiwrite feature, the colorbuffers 2,3,4 must be
    597      * marked as UNUSED in the US block. */
    598     if (r300->fb_multiwrite) {
    599         num_cbufs = MIN2(num_cbufs, 1);
    600     }
    601 
    602     BEGIN_CS(size);
    603 
    604     /* Colorbuffer format in the US block.
    605      * (must be written after unpipelined regs) */
    606     OUT_CS_REG_SEQ(R300_US_OUT_FMT_0, 4);
    607     for (i = 0; i < num_cbufs; i++) {
    608         OUT_CS(r300_surface(r300_get_nonnull_cb(fb, i))->format);
    609     }
    610     for (; i < 1; i++) {
    611         OUT_CS(R300_US_OUT_FMT_C4_8 |
    612                R300_C0_SEL_B | R300_C1_SEL_G |
    613                R300_C2_SEL_R | R300_C3_SEL_A);
    614     }
    615     for (; i < 4; i++) {
    616         OUT_CS(R300_US_OUT_FMT_UNUSED);
    617     }
    618 
    619     /* Set sample positions. It depends on the framebuffer sample count.
    620      * These are pipelined regs and as such cannot be moved to the AA state.
    621      */
    622     switch (r300->num_samples) {
    623     default:
    624         mspos0 = r300_get_mspos(0, sample_locs_1x);
    625         mspos1 = r300_get_mspos(1, sample_locs_1x);
    626         break;
    627     case 2:
    628         mspos0 = r300_get_mspos(0, sample_locs_2x);
    629         mspos1 = r300_get_mspos(1, sample_locs_2x);
    630         break;
    631     case 4:
    632         mspos0 = r300_get_mspos(0, sample_locs_4x);
    633         mspos1 = r300_get_mspos(1, sample_locs_4x);
    634         break;
    635     case 6:
    636         mspos0 = r300_get_mspos(0, sample_locs_6x);
    637         mspos1 = r300_get_mspos(1, sample_locs_6x);
    638         break;
    639     }
    640 
    641     OUT_CS_REG_SEQ(R300_GB_MSPOS0, 2);
    642     OUT_CS(mspos0);
    643     OUT_CS(mspos1);
    644     END_CS;
    645 }
    646 
    647 void r300_emit_query_start(struct r300_context *r300, unsigned size, void*state)
    648 {
    649     struct r300_query *query = r300->query_current;
    650     CS_LOCALS(r300);
    651 
    652     if (!query)
    653 	return;
    654 
    655     BEGIN_CS(size);
    656     if (r300->screen->caps.family == CHIP_RV530) {
    657         OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
    658     } else {
    659         OUT_CS_REG(R300_SU_REG_DEST, R300_RASTER_PIPE_SELECT_ALL);
    660     }
    661     OUT_CS_REG(R300_ZB_ZPASS_DATA, 0);
    662     END_CS;
    663     query->begin_emitted = TRUE;
    664 }
    665 
    666 static void r300_emit_query_end_frag_pipes(struct r300_context *r300,
    667                                            struct r300_query *query)
    668 {
    669     struct r300_capabilities* caps = &r300->screen->caps;
    670     uint32_t gb_pipes = r300->screen->info.r300_num_gb_pipes;
    671     CS_LOCALS(r300);
    672 
    673     assert(gb_pipes);
    674 
    675     BEGIN_CS(6 * gb_pipes + 2);
    676     /* I'm not so sure I like this switch, but it's hard to be elegant
    677      * when there's so many special cases...
    678      *
    679      * So here's the basic idea. For each pipe, enable writes to it only,
    680      * then put out the relocation for ZPASS_ADDR, taking into account a
    681      * 4-byte offset for each pipe. RV380 and older are special; they have
    682      * only two pipes, and the second pipe's enable is on bit 3, not bit 1,
    683      * so there's a chipset cap for that. */
    684     switch (gb_pipes) {
    685         case 4:
    686             /* pipe 3 only */
    687             OUT_CS_REG(R300_SU_REG_DEST, 1 << 3);
    688             OUT_CS_REG(R300_ZB_ZPASS_ADDR, (query->num_results + 3) * 4);
    689             OUT_CS_RELOC(r300->query_current);
    690         case 3:
    691             /* pipe 2 only */
    692             OUT_CS_REG(R300_SU_REG_DEST, 1 << 2);
    693             OUT_CS_REG(R300_ZB_ZPASS_ADDR, (query->num_results + 2) * 4);
    694             OUT_CS_RELOC(r300->query_current);
    695         case 2:
    696             /* pipe 1 only */
    697             /* As mentioned above, accommodate RV380 and older. */
    698             OUT_CS_REG(R300_SU_REG_DEST,
    699                     1 << (caps->high_second_pipe ? 3 : 1));
    700             OUT_CS_REG(R300_ZB_ZPASS_ADDR, (query->num_results + 1) * 4);
    701             OUT_CS_RELOC(r300->query_current);
    702         case 1:
    703             /* pipe 0 only */
    704             OUT_CS_REG(R300_SU_REG_DEST, 1 << 0);
    705             OUT_CS_REG(R300_ZB_ZPASS_ADDR, (query->num_results + 0) * 4);
    706             OUT_CS_RELOC(r300->query_current);
    707             break;
    708         default:
    709             fprintf(stderr, "r300: Implementation error: Chipset reports %d"
    710                     " pixel pipes!\n", gb_pipes);
    711             abort();
    712     }
    713 
    714     /* And, finally, reset it to normal... */
    715     OUT_CS_REG(R300_SU_REG_DEST, 0xF);
    716     END_CS;
    717 }
    718 
    719 static void rv530_emit_query_end_single_z(struct r300_context *r300,
    720                                           struct r300_query *query)
    721 {
    722     CS_LOCALS(r300);
    723 
    724     BEGIN_CS(8);
    725     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
    726     OUT_CS_REG(R300_ZB_ZPASS_ADDR, query->num_results * 4);
    727     OUT_CS_RELOC(r300->query_current);
    728     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
    729     END_CS;
    730 }
    731 
    732 static void rv530_emit_query_end_double_z(struct r300_context *r300,
    733                                           struct r300_query *query)
    734 {
    735     CS_LOCALS(r300);
    736 
    737     BEGIN_CS(14);
    738     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
    739     OUT_CS_REG(R300_ZB_ZPASS_ADDR, (query->num_results + 0) * 4);
    740     OUT_CS_RELOC(r300->query_current);
    741     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_1);
    742     OUT_CS_REG(R300_ZB_ZPASS_ADDR, (query->num_results + 1) * 4);
    743     OUT_CS_RELOC(r300->query_current);
    744     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
    745     END_CS;
    746 }
    747 
    748 void r300_emit_query_end(struct r300_context* r300)
    749 {
    750     struct r300_capabilities *caps = &r300->screen->caps;
    751     struct r300_query *query = r300->query_current;
    752 
    753     if (!query)
    754 	return;
    755 
    756     if (query->begin_emitted == FALSE)
    757         return;
    758 
    759     if (caps->family == CHIP_RV530) {
    760         if (r300->screen->info.r300_num_z_pipes == 2)
    761             rv530_emit_query_end_double_z(r300, query);
    762         else
    763             rv530_emit_query_end_single_z(r300, query);
    764     } else
    765         r300_emit_query_end_frag_pipes(r300, query);
    766 
    767     query->begin_emitted = FALSE;
    768     query->num_results += query->num_pipes;
    769 
    770     /* XXX grab all the results and reset the counter. */
    771     if (query->num_results >= query->buf->size / 4 - 4) {
    772         query->num_results = (query->buf->size / 4) / 2;
    773         fprintf(stderr, "r300: Rewinding OQBO...\n");
    774     }
    775 }
    776 
    777 void r300_emit_invariant_state(struct r300_context *r300,
    778                                unsigned size, void *state)
    779 {
    780     CS_LOCALS(r300);
    781     WRITE_CS_TABLE(state, size);
    782 }
    783 
    784 void r300_emit_rs_state(struct r300_context* r300, unsigned size, void* state)
    785 {
    786     struct r300_rs_state* rs = state;
    787     CS_LOCALS(r300);
    788 
    789     BEGIN_CS(size);
    790     OUT_CS_TABLE(rs->cb_main, RS_STATE_MAIN_SIZE);
    791     if (rs->polygon_offset_enable) {
    792         if (r300->zbuffer_bpp == 16) {
    793             OUT_CS_TABLE(rs->cb_poly_offset_zb16, 5);
    794         } else {
    795             OUT_CS_TABLE(rs->cb_poly_offset_zb24, 5);
    796         }
    797     }
    798     END_CS;
    799 }
    800 
    801 void r300_emit_rs_block_state(struct r300_context* r300,
    802                               unsigned size, void* state)
    803 {
    804     struct r300_rs_block* rs = (struct r300_rs_block*)state;
    805     unsigned i;
    806     /* It's the same for both INST and IP tables */
    807     unsigned count = (rs->inst_count & R300_RS_INST_COUNT_MASK) + 1;
    808     CS_LOCALS(r300);
    809 
    810     if (DBG_ON(r300, DBG_RS_BLOCK)) {
    811         r500_dump_rs_block(rs);
    812 
    813         fprintf(stderr, "r300: RS emit:\n");
    814 
    815         for (i = 0; i < count; i++)
    816             fprintf(stderr, "    : ip %d: 0x%08x\n", i, rs->ip[i]);
    817 
    818         for (i = 0; i < count; i++)
    819             fprintf(stderr, "    : inst %d: 0x%08x\n", i, rs->inst[i]);
    820 
    821         fprintf(stderr, "    : count: 0x%08x inst_count: 0x%08x\n",
    822             rs->count, rs->inst_count);
    823     }
    824 
    825     BEGIN_CS(size);
    826     OUT_CS_REG_SEQ(R300_VAP_VTX_STATE_CNTL, 2);
    827     OUT_CS(rs->vap_vtx_state_cntl);
    828     OUT_CS(rs->vap_vsm_vtx_assm);
    829     OUT_CS_REG_SEQ(R300_VAP_OUTPUT_VTX_FMT_0, 2);
    830     OUT_CS(rs->vap_out_vtx_fmt[0]);
    831     OUT_CS(rs->vap_out_vtx_fmt[1]);
    832     OUT_CS_REG_SEQ(R300_GB_ENABLE, 1);
    833     OUT_CS(rs->gb_enable);
    834 
    835     if (r300->screen->caps.is_r500) {
    836         OUT_CS_REG_SEQ(R500_RS_IP_0, count);
    837     } else {
    838         OUT_CS_REG_SEQ(R300_RS_IP_0, count);
    839     }
    840     OUT_CS_TABLE(rs->ip, count);
    841 
    842     OUT_CS_REG_SEQ(R300_RS_COUNT, 2);
    843     OUT_CS(rs->count);
    844     OUT_CS(rs->inst_count);
    845 
    846     if (r300->screen->caps.is_r500) {
    847         OUT_CS_REG_SEQ(R500_RS_INST_0, count);
    848     } else {
    849         OUT_CS_REG_SEQ(R300_RS_INST_0, count);
    850     }
    851     OUT_CS_TABLE(rs->inst, count);
    852     END_CS;
    853 }
    854 
    855 void r300_emit_sample_mask(struct r300_context *r300,
    856                            unsigned size, void *state)
    857 {
    858     unsigned mask = (*(unsigned*)state) & ((1 << 6)-1);
    859     CS_LOCALS(r300);
    860 
    861     BEGIN_CS(size);
    862     OUT_CS_REG(R300_SC_SCREENDOOR,
    863                mask | (mask << 6) | (mask << 12) | (mask << 18));
    864     END_CS;
    865 }
    866 
    867 void r300_emit_scissor_state(struct r300_context* r300,
    868                              unsigned size, void* state)
    869 {
    870     struct pipe_scissor_state* scissor = (struct pipe_scissor_state*)state;
    871     CS_LOCALS(r300);
    872 
    873     BEGIN_CS(size);
    874     OUT_CS_REG_SEQ(R300_SC_CLIPRECT_TL_0, 2);
    875     if (r300->screen->caps.is_r500) {
    876         OUT_CS((scissor->minx << R300_CLIPRECT_X_SHIFT) |
    877                (scissor->miny << R300_CLIPRECT_Y_SHIFT));
    878         OUT_CS(((scissor->maxx - 1) << R300_CLIPRECT_X_SHIFT) |
    879                ((scissor->maxy - 1) << R300_CLIPRECT_Y_SHIFT));
    880     } else {
    881         OUT_CS(((scissor->minx + 1440) << R300_CLIPRECT_X_SHIFT) |
    882                ((scissor->miny + 1440) << R300_CLIPRECT_Y_SHIFT));
    883         OUT_CS(((scissor->maxx + 1440-1) << R300_CLIPRECT_X_SHIFT) |
    884                ((scissor->maxy + 1440-1) << R300_CLIPRECT_Y_SHIFT));
    885     }
    886     END_CS;
    887 }
    888 
    889 void r300_emit_textures_state(struct r300_context *r300,
    890                               unsigned size, void *state)
    891 {
    892     struct r300_textures_state *allstate = (struct r300_textures_state*)state;
    893     struct r300_texture_sampler_state *texstate;
    894     struct r300_resource *tex;
    895     unsigned i;
    896     boolean has_us_format = r300->screen->caps.has_us_format;
    897     CS_LOCALS(r300);
    898 
    899     BEGIN_CS(size);
    900     OUT_CS_REG(R300_TX_ENABLE, allstate->tx_enable);
    901 
    902     for (i = 0; i < allstate->count; i++) {
    903         if ((1 << i) & allstate->tx_enable) {
    904             texstate = &allstate->regs[i];
    905             tex = r300_resource(allstate->sampler_views[i]->base.texture);
    906 
    907             OUT_CS_REG(R300_TX_FILTER0_0 + (i * 4), texstate->filter0);
    908             OUT_CS_REG(R300_TX_FILTER1_0 + (i * 4), texstate->filter1);
    909             OUT_CS_REG(R300_TX_BORDER_COLOR_0 + (i * 4),
    910                        texstate->border_color);
    911 
    912             OUT_CS_REG(R300_TX_FORMAT0_0 + (i * 4), texstate->format.format0);
    913             OUT_CS_REG(R300_TX_FORMAT1_0 + (i * 4), texstate->format.format1);
    914             OUT_CS_REG(R300_TX_FORMAT2_0 + (i * 4), texstate->format.format2);
    915 
    916             OUT_CS_REG(R300_TX_OFFSET_0 + (i * 4), texstate->format.tile_config);
    917             OUT_CS_RELOC(tex);
    918 
    919             if (has_us_format) {
    920                 OUT_CS_REG(R500_US_FORMAT0_0 + (i * 4),
    921                            texstate->format.us_format0);
    922             }
    923         }
    924     }
    925     END_CS;
    926 }
    927 
    928 void r300_emit_vertex_arrays(struct r300_context* r300, int offset,
    929                              boolean indexed, int instance_id)
    930 {
    931     struct pipe_vertex_buffer *vbuf = r300->vertex_buffer;
    932     struct pipe_vertex_element *velem = r300->velems->velem;
    933     struct r300_resource *buf;
    934     int i;
    935     unsigned vertex_array_count = r300->velems->count;
    936     unsigned packet_size = (vertex_array_count * 3 + 1) / 2;
    937     struct pipe_vertex_buffer *vb1, *vb2;
    938     unsigned *hw_format_size = r300->velems->format_size;
    939     unsigned size1, size2, offset1, offset2, stride1, stride2;
    940     CS_LOCALS(r300);
    941 
    942     BEGIN_CS(2 + packet_size + vertex_array_count * 2);
    943     OUT_CS_PKT3(R300_PACKET3_3D_LOAD_VBPNTR, packet_size);
    944     OUT_CS(vertex_array_count | (!indexed ? R300_VC_FORCE_PREFETCH : 0));
    945 
    946     if (instance_id == -1) {
    947         /* Non-instanced arrays. This ignores instance_divisor and instance_id. */
    948         for (i = 0; i < vertex_array_count - 1; i += 2) {
    949             vb1 = &vbuf[velem[i].vertex_buffer_index];
    950             vb2 = &vbuf[velem[i+1].vertex_buffer_index];
    951             size1 = hw_format_size[i];
    952             size2 = hw_format_size[i+1];
    953 
    954             OUT_CS(R300_VBPNTR_SIZE0(size1) | R300_VBPNTR_STRIDE0(vb1->stride) |
    955                    R300_VBPNTR_SIZE1(size2) | R300_VBPNTR_STRIDE1(vb2->stride));
    956             OUT_CS(vb1->buffer_offset + velem[i].src_offset   + offset * vb1->stride);
    957             OUT_CS(vb2->buffer_offset + velem[i+1].src_offset + offset * vb2->stride);
    958         }
    959 
    960         if (vertex_array_count & 1) {
    961             vb1 = &vbuf[velem[i].vertex_buffer_index];
    962             size1 = hw_format_size[i];
    963 
    964             OUT_CS(R300_VBPNTR_SIZE0(size1) | R300_VBPNTR_STRIDE0(vb1->stride));
    965             OUT_CS(vb1->buffer_offset + velem[i].src_offset + offset * vb1->stride);
    966         }
    967 
    968         for (i = 0; i < vertex_array_count; i++) {
    969             buf = r300_resource(vbuf[velem[i].vertex_buffer_index].buffer);
    970             OUT_CS_RELOC(buf);
    971         }
    972     } else {
    973         /* Instanced arrays. */
    974         for (i = 0; i < vertex_array_count - 1; i += 2) {
    975             vb1 = &vbuf[velem[i].vertex_buffer_index];
    976             vb2 = &vbuf[velem[i+1].vertex_buffer_index];
    977             size1 = hw_format_size[i];
    978             size2 = hw_format_size[i+1];
    979 
    980             if (velem[i].instance_divisor) {
    981                 stride1 = 0;
    982                 offset1 = vb1->buffer_offset + velem[i].src_offset +
    983                           (instance_id / velem[i].instance_divisor) * vb1->stride;
    984             } else {
    985                 stride1 = vb1->stride;
    986                 offset1 = vb1->buffer_offset + velem[i].src_offset + offset * vb1->stride;
    987             }
    988             if (velem[i+1].instance_divisor) {
    989                 stride2 = 0;
    990                 offset2 = vb2->buffer_offset + velem[i+1].src_offset +
    991                           (instance_id / velem[i+1].instance_divisor) * vb2->stride;
    992             } else {
    993                 stride2 = vb2->stride;
    994                 offset2 = vb2->buffer_offset + velem[i+1].src_offset + offset * vb2->stride;
    995             }
    996 
    997             OUT_CS(R300_VBPNTR_SIZE0(size1) | R300_VBPNTR_STRIDE0(stride1) |
    998                    R300_VBPNTR_SIZE1(size2) | R300_VBPNTR_STRIDE1(stride2));
    999             OUT_CS(offset1);
   1000             OUT_CS(offset2);
   1001         }
   1002 
   1003         if (vertex_array_count & 1) {
   1004             vb1 = &vbuf[velem[i].vertex_buffer_index];
   1005             size1 = hw_format_size[i];
   1006 
   1007             if (velem[i].instance_divisor) {
   1008                 stride1 = 0;
   1009                 offset1 = vb1->buffer_offset + velem[i].src_offset +
   1010                           (instance_id / velem[i].instance_divisor) * vb1->stride;
   1011             } else {
   1012                 stride1 = vb1->stride;
   1013                 offset1 = vb1->buffer_offset + velem[i].src_offset + offset * vb1->stride;
   1014             }
   1015 
   1016             OUT_CS(R300_VBPNTR_SIZE0(size1) | R300_VBPNTR_STRIDE0(stride1));
   1017             OUT_CS(offset1);
   1018         }
   1019 
   1020         for (i = 0; i < vertex_array_count; i++) {
   1021             buf = r300_resource(vbuf[velem[i].vertex_buffer_index].buffer);
   1022             OUT_CS_RELOC(buf);
   1023         }
   1024     }
   1025     END_CS;
   1026 }
   1027 
   1028 void r300_emit_vertex_arrays_swtcl(struct r300_context *r300, boolean indexed)
   1029 {
   1030     CS_LOCALS(r300);
   1031 
   1032     DBG(r300, DBG_SWTCL, "r300: Preparing vertex buffer %p for render, "
   1033             "vertex size %d\n", r300->vbo,
   1034             r300->vertex_info.size);
   1035     /* Set the pointer to our vertex buffer. The emitted values are this:
   1036      * PACKET3 [3D_LOAD_VBPNTR]
   1037      * COUNT   [1]
   1038      * FORMAT  [size | stride << 8]
   1039      * OFFSET  [offset into BO]
   1040      * VBPNTR  [relocated BO]
   1041      */
   1042     BEGIN_CS(7);
   1043     OUT_CS_PKT3(R300_PACKET3_3D_LOAD_VBPNTR, 3);
   1044     OUT_CS(1 | (!indexed ? R300_VC_FORCE_PREFETCH : 0));
   1045     OUT_CS(r300->vertex_info.size |
   1046             (r300->vertex_info.size << 8));
   1047     OUT_CS(r300->draw_vbo_offset);
   1048     OUT_CS(0);
   1049 
   1050     assert(r300->vbo);
   1051     OUT_CS(0xc0001000); /* PKT3_NOP */
   1052     OUT_CS(r300->rws->cs_lookup_buffer(r300->cs, r300->vbo) * 4);
   1053     END_CS;
   1054 }
   1055 
   1056 void r300_emit_vertex_stream_state(struct r300_context* r300,
   1057                                    unsigned size, void* state)
   1058 {
   1059     struct r300_vertex_stream_state *streams =
   1060         (struct r300_vertex_stream_state*)state;
   1061     unsigned i;
   1062     CS_LOCALS(r300);
   1063 
   1064     if (DBG_ON(r300, DBG_PSC)) {
   1065         fprintf(stderr, "r300: PSC emit:\n");
   1066 
   1067         for (i = 0; i < streams->count; i++) {
   1068             fprintf(stderr, "    : prog_stream_cntl%d: 0x%08x\n", i,
   1069                    streams->vap_prog_stream_cntl[i]);
   1070         }
   1071 
   1072         for (i = 0; i < streams->count; i++) {
   1073             fprintf(stderr, "    : prog_stream_cntl_ext%d: 0x%08x\n", i,
   1074                    streams->vap_prog_stream_cntl_ext[i]);
   1075         }
   1076     }
   1077 
   1078     BEGIN_CS(size);
   1079     OUT_CS_REG_SEQ(R300_VAP_PROG_STREAM_CNTL_0, streams->count);
   1080     OUT_CS_TABLE(streams->vap_prog_stream_cntl, streams->count);
   1081     OUT_CS_REG_SEQ(R300_VAP_PROG_STREAM_CNTL_EXT_0, streams->count);
   1082     OUT_CS_TABLE(streams->vap_prog_stream_cntl_ext, streams->count);
   1083     END_CS;
   1084 }
   1085 
   1086 void r300_emit_pvs_flush(struct r300_context* r300, unsigned size, void* state)
   1087 {
   1088     CS_LOCALS(r300);
   1089 
   1090     BEGIN_CS(size);
   1091     OUT_CS_REG(R300_VAP_PVS_STATE_FLUSH_REG, 0x0);
   1092     END_CS;
   1093 }
   1094 
   1095 void r300_emit_vap_invariant_state(struct r300_context *r300,
   1096                                    unsigned size, void *state)
   1097 {
   1098     CS_LOCALS(r300);
   1099     WRITE_CS_TABLE(state, size);
   1100 }
   1101 
   1102 void r300_emit_vs_state(struct r300_context* r300, unsigned size, void* state)
   1103 {
   1104     struct r300_vertex_shader* vs = (struct r300_vertex_shader*)state;
   1105     struct r300_vertex_program_code* code = &vs->code;
   1106     struct r300_screen* r300screen = r300->screen;
   1107     unsigned instruction_count = code->length / 4;
   1108 
   1109     unsigned vtx_mem_size = r300screen->caps.is_r500 ? 128 : 72;
   1110     unsigned input_count = MAX2(util_bitcount(code->InputsRead), 1);
   1111     unsigned output_count = MAX2(util_bitcount(code->OutputsWritten), 1);
   1112     unsigned temp_count = MAX2(code->num_temporaries, 1);
   1113 
   1114     unsigned pvs_num_slots = MIN3(vtx_mem_size / input_count,
   1115                                   vtx_mem_size / output_count, 10);
   1116     unsigned pvs_num_controllers = MIN2(vtx_mem_size / temp_count, 5);
   1117 
   1118     CS_LOCALS(r300);
   1119 
   1120     BEGIN_CS(size);
   1121 
   1122     /* R300_VAP_PVS_CODE_CNTL_0
   1123      * R300_VAP_PVS_CONST_CNTL
   1124      * R300_VAP_PVS_CODE_CNTL_1
   1125      * See the r5xx docs for instructions on how to use these. */
   1126     OUT_CS_REG(R300_VAP_PVS_CODE_CNTL_0, R300_PVS_FIRST_INST(0) |
   1127 	       R300_PVS_XYZW_VALID_INST(instruction_count - 1) |
   1128 	       R300_PVS_LAST_INST(instruction_count - 1));
   1129     OUT_CS_REG(R300_VAP_PVS_CODE_CNTL_1, instruction_count - 1);
   1130 
   1131     OUT_CS_REG(R300_VAP_PVS_VECTOR_INDX_REG, 0);
   1132     OUT_CS_ONE_REG(R300_VAP_PVS_UPLOAD_DATA, code->length);
   1133     OUT_CS_TABLE(code->body.d, code->length);
   1134 
   1135     OUT_CS_REG(R300_VAP_CNTL, R300_PVS_NUM_SLOTS(pvs_num_slots) |
   1136             R300_PVS_NUM_CNTLRS(pvs_num_controllers) |
   1137             R300_PVS_NUM_FPUS(r300screen->caps.num_vert_fpus) |
   1138             R300_PVS_VF_MAX_VTX_NUM(12) |
   1139             (r300->clip_halfz ? R300_DX_CLIP_SPACE_DEF : 0) |
   1140             (r300screen->caps.is_r500 ? R500_TCL_STATE_OPTIMIZATION : 0));
   1141 
   1142     /* Emit flow control instructions.  Even if there are no fc instructions,
   1143      * we still need to write the registers to make sure they are cleared. */
   1144     OUT_CS_REG(R300_VAP_PVS_FLOW_CNTL_OPC, code->fc_ops);
   1145     if (r300screen->caps.is_r500) {
   1146         OUT_CS_REG_SEQ(R500_VAP_PVS_FLOW_CNTL_ADDRS_LW_0, R300_VS_MAX_FC_OPS * 2);
   1147         OUT_CS_TABLE(code->fc_op_addrs.r500, R300_VS_MAX_FC_OPS * 2);
   1148     } else {
   1149         OUT_CS_REG_SEQ(R300_VAP_PVS_FLOW_CNTL_ADDRS_0, R300_VS_MAX_FC_OPS);
   1150         OUT_CS_TABLE(code->fc_op_addrs.r300, R300_VS_MAX_FC_OPS);
   1151     }
   1152     OUT_CS_REG_SEQ(R300_VAP_PVS_FLOW_CNTL_LOOP_INDEX_0, R300_VS_MAX_FC_OPS);
   1153     OUT_CS_TABLE(code->fc_loop_index, R300_VS_MAX_FC_OPS);
   1154 
   1155     END_CS;
   1156 }
   1157 
   1158 void r300_emit_vs_constants(struct r300_context* r300,
   1159                             unsigned size, void *state)
   1160 {
   1161     unsigned count =
   1162         ((struct r300_vertex_shader*)r300->vs_state.state)->externals_count;
   1163     struct r300_constant_buffer *buf = (struct r300_constant_buffer*)state;
   1164     struct r300_vertex_shader *vs = (struct r300_vertex_shader*)r300->vs_state.state;
   1165     unsigned i;
   1166     int imm_first = vs->externals_count;
   1167     int imm_end = vs->code.constants.Count;
   1168     int imm_count = vs->immediates_count;
   1169     CS_LOCALS(r300);
   1170 
   1171     BEGIN_CS(size);
   1172     OUT_CS_REG(R300_VAP_PVS_CONST_CNTL,
   1173                R300_PVS_CONST_BASE_OFFSET(buf->buffer_base) |
   1174                R300_PVS_MAX_CONST_ADDR(MAX2(imm_end - 1, 0)));
   1175     if (vs->externals_count) {
   1176         OUT_CS_REG(R300_VAP_PVS_VECTOR_INDX_REG,
   1177                    (r300->screen->caps.is_r500 ?
   1178                    R500_PVS_CONST_START : R300_PVS_CONST_START) + buf->buffer_base);
   1179         OUT_CS_ONE_REG(R300_VAP_PVS_UPLOAD_DATA, count * 4);
   1180         if (buf->remap_table){
   1181             for (i = 0; i < count; i++) {
   1182                 uint32_t *data = &buf->ptr[buf->remap_table[i]*4];
   1183                 OUT_CS_TABLE(data, 4);
   1184             }
   1185         } else {
   1186             OUT_CS_TABLE(buf->ptr, count * 4);
   1187         }
   1188     }
   1189 
   1190     /* Emit immediates. */
   1191     if (imm_count) {
   1192         OUT_CS_REG(R300_VAP_PVS_VECTOR_INDX_REG,
   1193                    (r300->screen->caps.is_r500 ?
   1194                    R500_PVS_CONST_START : R300_PVS_CONST_START) +
   1195                    buf->buffer_base + imm_first);
   1196         OUT_CS_ONE_REG(R300_VAP_PVS_UPLOAD_DATA, imm_count * 4);
   1197         for (i = imm_first; i < imm_end; i++) {
   1198             const float *data = vs->code.constants.Constants[i].u.Immediate;
   1199             OUT_CS_TABLE(data, 4);
   1200         }
   1201     }
   1202     END_CS;
   1203 }
   1204 
   1205 void r300_emit_viewport_state(struct r300_context* r300,
   1206                               unsigned size, void* state)
   1207 {
   1208     struct r300_viewport_state* viewport = (struct r300_viewport_state*)state;
   1209     CS_LOCALS(r300);
   1210 
   1211     BEGIN_CS(size);
   1212     OUT_CS_REG_SEQ(R300_SE_VPORT_XSCALE, 6);
   1213     OUT_CS_TABLE(&viewport->xscale, 6);
   1214     OUT_CS_REG(R300_VAP_VTE_CNTL, viewport->vte_control);
   1215     END_CS;
   1216 }
   1217 
   1218 void r300_emit_hiz_clear(struct r300_context *r300, unsigned size, void *state)
   1219 {
   1220     struct pipe_framebuffer_state *fb =
   1221         (struct pipe_framebuffer_state*)r300->fb_state.state;
   1222     struct r300_resource* tex;
   1223     CS_LOCALS(r300);
   1224 
   1225     tex = r300_resource(fb->zsbuf->texture);
   1226 
   1227     BEGIN_CS(size);
   1228     OUT_CS_PKT3(R300_PACKET3_3D_CLEAR_HIZ, 2);
   1229     OUT_CS(0);
   1230     OUT_CS(tex->tex.hiz_dwords[fb->zsbuf->u.tex.level]);
   1231     OUT_CS(r300->hiz_clear_value);
   1232     END_CS;
   1233 
   1234     /* Mark the current zbuffer's hiz ram as in use. */
   1235     r300->hiz_in_use = TRUE;
   1236     r300->hiz_func = HIZ_FUNC_NONE;
   1237     r300_mark_atom_dirty(r300, &r300->hyperz_state);
   1238 }
   1239 
   1240 void r300_emit_zmask_clear(struct r300_context *r300, unsigned size, void *state)
   1241 {
   1242     struct pipe_framebuffer_state *fb =
   1243         (struct pipe_framebuffer_state*)r300->fb_state.state;
   1244     struct r300_resource *tex;
   1245     CS_LOCALS(r300);
   1246 
   1247     tex = r300_resource(fb->zsbuf->texture);
   1248 
   1249     BEGIN_CS(size);
   1250     OUT_CS_PKT3(R300_PACKET3_3D_CLEAR_ZMASK, 2);
   1251     OUT_CS(0);
   1252     OUT_CS(tex->tex.zmask_dwords[fb->zsbuf->u.tex.level]);
   1253     OUT_CS(0);
   1254     END_CS;
   1255 
   1256     /* Mark the current zbuffer's zmask as in use. */
   1257     r300->zmask_in_use = TRUE;
   1258     r300_mark_atom_dirty(r300, &r300->hyperz_state);
   1259 }
   1260 
   1261 void r300_emit_cmask_clear(struct r300_context *r300, unsigned size, void *state)
   1262 {
   1263     struct pipe_framebuffer_state *fb =
   1264         (struct pipe_framebuffer_state*)r300->fb_state.state;
   1265     struct r300_resource *tex;
   1266     CS_LOCALS(r300);
   1267 
   1268     tex = r300_resource(fb->cbufs[0]->texture);
   1269 
   1270     BEGIN_CS(size);
   1271     OUT_CS_PKT3(R300_PACKET3_3D_CLEAR_CMASK, 2);
   1272     OUT_CS(0);
   1273     OUT_CS(tex->tex.cmask_dwords);
   1274     OUT_CS(0);
   1275     END_CS;
   1276 
   1277     /* Mark the current zbuffer's zmask as in use. */
   1278     r300->cmask_in_use = TRUE;
   1279     r300_mark_fb_state_dirty(r300, R300_CHANGED_CMASK_ENABLE);
   1280 }
   1281 
   1282 void r300_emit_ztop_state(struct r300_context* r300,
   1283                           unsigned size, void* state)
   1284 {
   1285     struct r300_ztop_state* ztop = (struct r300_ztop_state*)state;
   1286     CS_LOCALS(r300);
   1287 
   1288     BEGIN_CS(size);
   1289     OUT_CS_REG(R300_ZB_ZTOP, ztop->z_buffer_top);
   1290     END_CS;
   1291 }
   1292 
   1293 void r300_emit_texture_cache_inval(struct r300_context* r300, unsigned size, void* state)
   1294 {
   1295     CS_LOCALS(r300);
   1296 
   1297     BEGIN_CS(size);
   1298     OUT_CS_REG(R300_TX_INVALTAGS, 0);
   1299     END_CS;
   1300 }
   1301 
   1302 boolean r300_emit_buffer_validate(struct r300_context *r300,
   1303                                   boolean do_validate_vertex_buffers,
   1304                                   struct pipe_resource *index_buffer)
   1305 {
   1306     struct pipe_framebuffer_state *fb =
   1307         (struct pipe_framebuffer_state*)r300->fb_state.state;
   1308     struct r300_aa_state *aa = (struct r300_aa_state*)r300->aa_state.state;
   1309     struct r300_textures_state *texstate =
   1310         (struct r300_textures_state*)r300->textures_state.state;
   1311     struct r300_resource *tex;
   1312     unsigned i;
   1313     boolean flushed = FALSE;
   1314 
   1315 validate:
   1316     if (r300->fb_state.dirty) {
   1317         /* Color buffers... */
   1318         for (i = 0; i < fb->nr_cbufs; i++) {
   1319             if (!fb->cbufs[i])
   1320                 continue;
   1321             tex = r300_resource(fb->cbufs[i]->texture);
   1322             assert(tex && tex->buf && "cbuf is marked, but NULL!");
   1323             r300->rws->cs_add_buffer(r300->cs, tex->buf,
   1324                                     RADEON_USAGE_READWRITE | RADEON_USAGE_SYNCHRONIZED,
   1325                                     r300_surface(fb->cbufs[i])->domain,
   1326                                     tex->b.b.nr_samples > 1 ?
   1327                                     RADEON_PRIO_COLOR_BUFFER_MSAA :
   1328                                     RADEON_PRIO_COLOR_BUFFER);
   1329         }
   1330         /* ...depth buffer... */
   1331         if (fb->zsbuf) {
   1332             tex = r300_resource(fb->zsbuf->texture);
   1333             assert(tex && tex->buf && "zsbuf is marked, but NULL!");
   1334             r300->rws->cs_add_buffer(r300->cs, tex->buf,
   1335                                     RADEON_USAGE_READWRITE | RADEON_USAGE_SYNCHRONIZED,
   1336                                     r300_surface(fb->zsbuf)->domain,
   1337                                     tex->b.b.nr_samples > 1 ?
   1338                                     RADEON_PRIO_DEPTH_BUFFER_MSAA :
   1339                                     RADEON_PRIO_DEPTH_BUFFER);
   1340         }
   1341     }
   1342     /* The AA resolve buffer. */
   1343     if (r300->aa_state.dirty) {
   1344         if (aa->dest) {
   1345             r300->rws->cs_add_buffer(r300->cs, aa->dest->buf,
   1346                                     RADEON_USAGE_WRITE | RADEON_USAGE_SYNCHRONIZED,
   1347                                     aa->dest->domain,
   1348                                     RADEON_PRIO_COLOR_BUFFER);
   1349         }
   1350     }
   1351     if (r300->textures_state.dirty) {
   1352         /* ...textures... */
   1353         for (i = 0; i < texstate->count; i++) {
   1354             if (!(texstate->tx_enable & (1 << i))) {
   1355                 continue;
   1356             }
   1357 
   1358             tex = r300_resource(texstate->sampler_views[i]->base.texture);
   1359             r300->rws->cs_add_buffer(r300->cs, tex->buf,
   1360                                      RADEON_USAGE_READ | RADEON_USAGE_SYNCHRONIZED,
   1361                                     tex->domain, RADEON_PRIO_SAMPLER_TEXTURE);
   1362         }
   1363     }
   1364     /* ...occlusion query buffer... */
   1365     if (r300->query_current)
   1366         r300->rws->cs_add_buffer(r300->cs, r300->query_current->buf,
   1367                                  RADEON_USAGE_WRITE | RADEON_USAGE_SYNCHRONIZED,
   1368                                  RADEON_DOMAIN_GTT,
   1369                                 RADEON_PRIO_QUERY);
   1370     /* ...vertex buffer for SWTCL path... */
   1371     if (r300->vbo)
   1372         r300->rws->cs_add_buffer(r300->cs, r300->vbo,
   1373                                  RADEON_USAGE_READ | RADEON_USAGE_SYNCHRONIZED,
   1374                                  RADEON_DOMAIN_GTT,
   1375                                 RADEON_PRIO_VERTEX_BUFFER);
   1376     /* ...vertex buffers for HWTCL path... */
   1377     if (do_validate_vertex_buffers && r300->vertex_arrays_dirty) {
   1378         struct pipe_vertex_buffer *vbuf = r300->vertex_buffer;
   1379         struct pipe_vertex_buffer *last = r300->vertex_buffer +
   1380                                       r300->nr_vertex_buffers;
   1381         struct pipe_resource *buf;
   1382 
   1383         for (; vbuf != last; vbuf++) {
   1384             buf = vbuf->buffer;
   1385             if (!buf)
   1386                 continue;
   1387 
   1388             r300->rws->cs_add_buffer(r300->cs, r300_resource(buf)->buf,
   1389                                     RADEON_USAGE_READ | RADEON_USAGE_SYNCHRONIZED,
   1390                                     r300_resource(buf)->domain,
   1391                                     RADEON_PRIO_SAMPLER_BUFFER);
   1392         }
   1393     }
   1394     /* ...and index buffer for HWTCL path. */
   1395     if (index_buffer)
   1396         r300->rws->cs_add_buffer(r300->cs, r300_resource(index_buffer)->buf,
   1397                                 RADEON_USAGE_READ | RADEON_USAGE_SYNCHRONIZED,
   1398                                 r300_resource(index_buffer)->domain,
   1399                                 RADEON_PRIO_INDEX_BUFFER);
   1400 
   1401     /* Now do the validation (flush is called inside cs_validate on failure). */
   1402     if (!r300->rws->cs_validate(r300->cs)) {
   1403         /* Ooops, an infinite loop, give up. */
   1404         if (flushed)
   1405             return FALSE;
   1406 
   1407         flushed = TRUE;
   1408         goto validate;
   1409     }
   1410 
   1411     return TRUE;
   1412 }
   1413 
   1414 unsigned r300_get_num_dirty_dwords(struct r300_context *r300)
   1415 {
   1416     struct r300_atom* atom;
   1417     unsigned dwords = 0;
   1418 
   1419     foreach_dirty_atom(r300, atom) {
   1420         if (atom->dirty) {
   1421             dwords += atom->size;
   1422         }
   1423     }
   1424 
   1425     /* let's reserve some more, just in case */
   1426     dwords += 32;
   1427 
   1428     return dwords;
   1429 }
   1430 
   1431 unsigned r300_get_num_cs_end_dwords(struct r300_context *r300)
   1432 {
   1433     unsigned dwords = 0;
   1434 
   1435     /* Emitted in flush. */
   1436     dwords += 26; /* emit_query_end */
   1437     dwords += r300->hyperz_state.size + 2; /* emit_hyperz_end + zcache flush */
   1438     if (r300->screen->caps.is_r500)
   1439         dwords += 2; /* emit_index_bias */
   1440     dwords += 3; /* MSPOS */
   1441 
   1442     return dwords;
   1443 }
   1444 
   1445 /* Emit all dirty state. */
   1446 void r300_emit_dirty_state(struct r300_context* r300)
   1447 {
   1448     struct r300_atom *atom;
   1449 
   1450     foreach_dirty_atom(r300, atom) {
   1451         if (atom->dirty) {
   1452             atom->emit(r300, atom->size, atom->state);
   1453             atom->dirty = FALSE;
   1454         }
   1455     }
   1456 
   1457     r300->first_dirty = NULL;
   1458     r300->last_dirty = NULL;
   1459     r300->dirty_hw++;
   1460 }
   1461