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      1 /**************************************************************************
      2  *
      3  * Copyright 2013 Marek Olk <maraeo (at) gmail.com>
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 /* This head-up display module can draw transparent graphs on top of what
     29  * the app is rendering, visualizing various data like framerate, cpu load,
     30  * performance counters, etc. It can be hook up into any state tracker.
     31  *
     32  * The HUD is controlled with the GALLIUM_HUD environment variable.
     33  * Set GALLIUM_HUD=help for more info.
     34  */
     35 
     36 #include <inttypes.h>
     37 #include <signal.h>
     38 #include <stdio.h>
     39 
     40 #include "hud/hud_context.h"
     41 #include "hud/hud_private.h"
     42 #include "hud/font.h"
     43 
     44 #include "cso_cache/cso_context.h"
     45 #include "util/u_draw_quad.h"
     46 #include "util/u_format.h"
     47 #include "util/u_inlines.h"
     48 #include "util/u_memory.h"
     49 #include "util/u_math.h"
     50 #include "util/u_sampler.h"
     51 #include "util/u_simple_shaders.h"
     52 #include "util/u_string.h"
     53 #include "util/u_upload_mgr.h"
     54 #include "tgsi/tgsi_text.h"
     55 #include "tgsi/tgsi_dump.h"
     56 
     57 /* Control the visibility of all HUD contexts */
     58 static boolean huds_visible = TRUE;
     59 
     60 struct hud_context {
     61    struct pipe_context *pipe;
     62    struct cso_context *cso;
     63    struct u_upload_mgr *uploader;
     64 
     65    struct hud_batch_query_context *batch_query;
     66    struct list_head pane_list;
     67 
     68    /* states */
     69    struct pipe_blend_state no_blend, alpha_blend;
     70    struct pipe_depth_stencil_alpha_state dsa;
     71    void *fs_color, *fs_text;
     72    struct pipe_rasterizer_state rasterizer, rasterizer_aa_lines;
     73    void *vs;
     74    struct pipe_vertex_element velems[2];
     75 
     76    /* font */
     77    struct util_font font;
     78    struct pipe_sampler_view *font_sampler_view;
     79    struct pipe_sampler_state font_sampler_state;
     80 
     81    /* VS constant buffer */
     82    struct {
     83       float color[4];
     84       float two_div_fb_width;
     85       float two_div_fb_height;
     86       float translate[2];
     87       float scale[2];
     88       float padding[2];
     89    } constants;
     90    struct pipe_constant_buffer constbuf;
     91 
     92    unsigned fb_width, fb_height;
     93 
     94    /* vertices for text and background drawing are accumulated here and then
     95     * drawn all at once */
     96    struct vertex_queue {
     97       float *vertices;
     98       struct pipe_vertex_buffer vbuf;
     99       unsigned max_num_vertices;
    100       unsigned num_vertices;
    101    } text, bg, whitelines;
    102 
    103    bool has_srgb;
    104 };
    105 
    106 #ifdef PIPE_OS_UNIX
    107 static void
    108 signal_visible_handler(int sig, siginfo_t *siginfo, void *context)
    109 {
    110    huds_visible = !huds_visible;
    111 }
    112 #endif
    113 
    114 static void
    115 hud_draw_colored_prims(struct hud_context *hud, unsigned prim,
    116                        float *buffer, unsigned num_vertices,
    117                        float r, float g, float b, float a,
    118                        int xoffset, int yoffset, float yscale)
    119 {
    120    struct cso_context *cso = hud->cso;
    121    struct pipe_vertex_buffer vbuffer = {0};
    122 
    123    hud->constants.color[0] = r;
    124    hud->constants.color[1] = g;
    125    hud->constants.color[2] = b;
    126    hud->constants.color[3] = a;
    127    hud->constants.translate[0] = (float) xoffset;
    128    hud->constants.translate[1] = (float) yoffset;
    129    hud->constants.scale[0] = 1;
    130    hud->constants.scale[1] = yscale;
    131    cso_set_constant_buffer(cso, PIPE_SHADER_VERTEX, 0, &hud->constbuf);
    132 
    133    vbuffer.user_buffer = buffer;
    134    vbuffer.stride = 2 * sizeof(float);
    135 
    136    cso_set_vertex_buffers(cso, cso_get_aux_vertex_buffer_slot(cso),
    137                           1, &vbuffer);
    138    cso_set_fragment_shader_handle(hud->cso, hud->fs_color);
    139    cso_draw_arrays(cso, prim, 0, num_vertices);
    140 }
    141 
    142 static void
    143 hud_draw_colored_quad(struct hud_context *hud, unsigned prim,
    144                       unsigned x1, unsigned y1, unsigned x2, unsigned y2,
    145                       float r, float g, float b, float a)
    146 {
    147    float buffer[] = {
    148       (float) x1, (float) y1,
    149       (float) x1, (float) y2,
    150       (float) x2, (float) y2,
    151       (float) x2, (float) y1,
    152    };
    153 
    154    hud_draw_colored_prims(hud, prim, buffer, 4, r, g, b, a, 0, 0, 1);
    155 }
    156 
    157 static void
    158 hud_draw_background_quad(struct hud_context *hud,
    159                          unsigned x1, unsigned y1, unsigned x2, unsigned y2)
    160 {
    161    float *vertices = hud->bg.vertices + hud->bg.num_vertices*2;
    162    unsigned num = 0;
    163 
    164    assert(hud->bg.num_vertices + 4 <= hud->bg.max_num_vertices);
    165 
    166    vertices[num++] = (float) x1;
    167    vertices[num++] = (float) y1;
    168 
    169    vertices[num++] = (float) x1;
    170    vertices[num++] = (float) y2;
    171 
    172    vertices[num++] = (float) x2;
    173    vertices[num++] = (float) y2;
    174 
    175    vertices[num++] = (float) x2;
    176    vertices[num++] = (float) y1;
    177 
    178    hud->bg.num_vertices += num/2;
    179 }
    180 
    181 static void
    182 hud_draw_string(struct hud_context *hud, unsigned x, unsigned y,
    183                 const char *str, ...)
    184 {
    185    char buf[256];
    186    char *s = buf;
    187    float *vertices = hud->text.vertices + hud->text.num_vertices*4;
    188    unsigned num = 0;
    189 
    190    va_list ap;
    191    va_start(ap, str);
    192    util_vsnprintf(buf, sizeof(buf), str, ap);
    193    va_end(ap);
    194 
    195    if (!*s)
    196       return;
    197 
    198    hud_draw_background_quad(hud,
    199                             x, y,
    200                             x + strlen(buf)*hud->font.glyph_width,
    201                             y + hud->font.glyph_height);
    202 
    203    while (*s) {
    204       unsigned x1 = x;
    205       unsigned y1 = y;
    206       unsigned x2 = x + hud->font.glyph_width;
    207       unsigned y2 = y + hud->font.glyph_height;
    208       unsigned tx1 = (*s % 16) * hud->font.glyph_width;
    209       unsigned ty1 = (*s / 16) * hud->font.glyph_height;
    210       unsigned tx2 = tx1 + hud->font.glyph_width;
    211       unsigned ty2 = ty1 + hud->font.glyph_height;
    212 
    213       if (*s == ' ') {
    214          x += hud->font.glyph_width;
    215          s++;
    216          continue;
    217       }
    218 
    219       assert(hud->text.num_vertices + num/4 + 4 <= hud->text.max_num_vertices);
    220 
    221       vertices[num++] = (float) x1;
    222       vertices[num++] = (float) y1;
    223       vertices[num++] = (float) tx1;
    224       vertices[num++] = (float) ty1;
    225 
    226       vertices[num++] = (float) x1;
    227       vertices[num++] = (float) y2;
    228       vertices[num++] = (float) tx1;
    229       vertices[num++] = (float) ty2;
    230 
    231       vertices[num++] = (float) x2;
    232       vertices[num++] = (float) y2;
    233       vertices[num++] = (float) tx2;
    234       vertices[num++] = (float) ty2;
    235 
    236       vertices[num++] = (float) x2;
    237       vertices[num++] = (float) y1;
    238       vertices[num++] = (float) tx2;
    239       vertices[num++] = (float) ty1;
    240 
    241       x += hud->font.glyph_width;
    242       s++;
    243    }
    244 
    245    hud->text.num_vertices += num/4;
    246 }
    247 
    248 static void
    249 number_to_human_readable(uint64_t num, enum pipe_driver_query_type type,
    250                          char *out)
    251 {
    252    static const char *byte_units[] =
    253       {" B", " KB", " MB", " GB", " TB", " PB", " EB"};
    254    static const char *metric_units[] =
    255       {"", " k", " M", " G", " T", " P", " E"};
    256    static const char *time_units[] =
    257       {" us", " ms", " s"};  /* based on microseconds */
    258    static const char *hz_units[] =
    259       {" Hz", " KHz", " MHz", " GHz"};
    260    static const char *percent_units[] = {"%"};
    261    static const char *dbm_units[] = {" (-dBm)"};
    262    static const char *temperature_units[] = {" C"};
    263    static const char *volt_units[] = {" mV", " V"};
    264    static const char *amp_units[] = {" mA", " A"};
    265    static const char *watt_units[] = {" mW", " W"};
    266 
    267    const char **units;
    268    unsigned max_unit;
    269    double divisor = (type == PIPE_DRIVER_QUERY_TYPE_BYTES) ? 1024 : 1000;
    270    unsigned unit = 0;
    271    double d = num;
    272 
    273    switch (type) {
    274    case PIPE_DRIVER_QUERY_TYPE_MICROSECONDS:
    275       max_unit = ARRAY_SIZE(time_units)-1;
    276       units = time_units;
    277       break;
    278    case PIPE_DRIVER_QUERY_TYPE_VOLTS:
    279       max_unit = ARRAY_SIZE(volt_units)-1;
    280       units = volt_units;
    281       break;
    282    case PIPE_DRIVER_QUERY_TYPE_AMPS:
    283       max_unit = ARRAY_SIZE(amp_units)-1;
    284       units = amp_units;
    285       break;
    286    case PIPE_DRIVER_QUERY_TYPE_DBM:
    287       max_unit = ARRAY_SIZE(dbm_units)-1;
    288       units = dbm_units;
    289       break;
    290    case PIPE_DRIVER_QUERY_TYPE_TEMPERATURE:
    291       max_unit = ARRAY_SIZE(temperature_units)-1;
    292       units = temperature_units;
    293       break;
    294    case PIPE_DRIVER_QUERY_TYPE_PERCENTAGE:
    295       max_unit = ARRAY_SIZE(percent_units)-1;
    296       units = percent_units;
    297       break;
    298    case PIPE_DRIVER_QUERY_TYPE_BYTES:
    299       max_unit = ARRAY_SIZE(byte_units)-1;
    300       units = byte_units;
    301       break;
    302    case PIPE_DRIVER_QUERY_TYPE_HZ:
    303       max_unit = ARRAY_SIZE(hz_units)-1;
    304       units = hz_units;
    305       break;
    306    case PIPE_DRIVER_QUERY_TYPE_WATTS:
    307       max_unit = ARRAY_SIZE(watt_units)-1;
    308       units = watt_units;
    309       break;
    310    default:
    311       max_unit = ARRAY_SIZE(metric_units)-1;
    312       units = metric_units;
    313    }
    314 
    315    while (d > divisor && unit < max_unit) {
    316       d /= divisor;
    317       unit++;
    318    }
    319 
    320    /* Round to 3 decimal places so as not to print trailing zeros. */
    321    if (d*1000 != (int)(d*1000))
    322       d = round(d * 1000) / 1000;
    323 
    324    /* Show at least 4 digits with at most 3 decimal places, but not zeros. */
    325    if (d >= 1000 || d == (int)d)
    326       sprintf(out, "%.0f%s", d, units[unit]);
    327    else if (d >= 100 || d*10 == (int)(d*10))
    328       sprintf(out, "%.1f%s", d, units[unit]);
    329    else if (d >= 10 || d*100 == (int)(d*100))
    330       sprintf(out, "%.2f%s", d, units[unit]);
    331    else
    332       sprintf(out, "%.3f%s", d, units[unit]);
    333 }
    334 
    335 static void
    336 hud_draw_graph_line_strip(struct hud_context *hud, const struct hud_graph *gr,
    337                           unsigned xoffset, unsigned yoffset, float yscale)
    338 {
    339    if (gr->num_vertices <= 1)
    340       return;
    341 
    342    assert(gr->index <= gr->num_vertices);
    343 
    344    hud_draw_colored_prims(hud, PIPE_PRIM_LINE_STRIP,
    345                           gr->vertices, gr->index,
    346                           gr->color[0], gr->color[1], gr->color[2], 1,
    347                           xoffset + (gr->pane->max_num_vertices - gr->index - 1) * 2 - 1,
    348                           yoffset, yscale);
    349 
    350    if (gr->num_vertices <= gr->index)
    351       return;
    352 
    353    hud_draw_colored_prims(hud, PIPE_PRIM_LINE_STRIP,
    354                           gr->vertices + gr->index*2,
    355                           gr->num_vertices - gr->index,
    356                           gr->color[0], gr->color[1], gr->color[2], 1,
    357                           xoffset - gr->index*2 - 1, yoffset, yscale);
    358 }
    359 
    360 static void
    361 hud_pane_accumulate_vertices(struct hud_context *hud,
    362                              const struct hud_pane *pane)
    363 {
    364    struct hud_graph *gr;
    365    float *line_verts = hud->whitelines.vertices + hud->whitelines.num_vertices*2;
    366    unsigned i, num = 0;
    367    char str[32];
    368    const unsigned last_line = pane->last_line;
    369 
    370    /* draw background */
    371    hud_draw_background_quad(hud,
    372                             pane->x1, pane->y1,
    373                             pane->x2, pane->y2);
    374 
    375    /* draw numbers on the right-hand side */
    376    for (i = 0; i <= last_line; i++) {
    377       unsigned x = pane->x2 + 2;
    378       unsigned y = pane->inner_y1 +
    379                    pane->inner_height * (last_line - i) / last_line -
    380                    hud->font.glyph_height / 2;
    381 
    382       number_to_human_readable(pane->max_value * i / last_line,
    383                                pane->type, str);
    384       hud_draw_string(hud, x, y, "%s", str);
    385    }
    386 
    387    /* draw info below the pane */
    388    i = 0;
    389    LIST_FOR_EACH_ENTRY(gr, &pane->graph_list, head) {
    390       unsigned x = pane->x1 + 2;
    391       unsigned y = pane->y2 + 2 + i*hud->font.glyph_height;
    392 
    393       number_to_human_readable(gr->current_value, pane->type, str);
    394       hud_draw_string(hud, x, y, "  %s: %s", gr->name, str);
    395       i++;
    396    }
    397 
    398    /* draw border */
    399    assert(hud->whitelines.num_vertices + num/2 + 8 <= hud->whitelines.max_num_vertices);
    400    line_verts[num++] = (float) pane->x1;
    401    line_verts[num++] = (float) pane->y1;
    402    line_verts[num++] = (float) pane->x2;
    403    line_verts[num++] = (float) pane->y1;
    404 
    405    line_verts[num++] = (float) pane->x2;
    406    line_verts[num++] = (float) pane->y1;
    407    line_verts[num++] = (float) pane->x2;
    408    line_verts[num++] = (float) pane->y2;
    409 
    410    line_verts[num++] = (float) pane->x1;
    411    line_verts[num++] = (float) pane->y2;
    412    line_verts[num++] = (float) pane->x2;
    413    line_verts[num++] = (float) pane->y2;
    414 
    415    line_verts[num++] = (float) pane->x1;
    416    line_verts[num++] = (float) pane->y1;
    417    line_verts[num++] = (float) pane->x1;
    418    line_verts[num++] = (float) pane->y2;
    419 
    420    /* draw horizontal lines inside the graph */
    421    for (i = 0; i <= last_line; i++) {
    422       float y = round((pane->max_value * i / (double)last_line) *
    423                       pane->yscale + pane->inner_y2);
    424 
    425       assert(hud->whitelines.num_vertices + num/2 + 2 <= hud->whitelines.max_num_vertices);
    426       line_verts[num++] = pane->x1;
    427       line_verts[num++] = y;
    428       line_verts[num++] = pane->x2;
    429       line_verts[num++] = y;
    430    }
    431 
    432    hud->whitelines.num_vertices += num/2;
    433 }
    434 
    435 static void
    436 hud_pane_draw_colored_objects(struct hud_context *hud,
    437                               const struct hud_pane *pane)
    438 {
    439    struct hud_graph *gr;
    440    unsigned i;
    441 
    442    /* draw colored quads below the pane */
    443    i = 0;
    444    LIST_FOR_EACH_ENTRY(gr, &pane->graph_list, head) {
    445       unsigned x = pane->x1 + 2;
    446       unsigned y = pane->y2 + 2 + i*hud->font.glyph_height;
    447 
    448       hud_draw_colored_quad(hud, PIPE_PRIM_QUADS, x + 1, y + 1, x + 12, y + 13,
    449                             gr->color[0], gr->color[1], gr->color[2], 1);
    450       i++;
    451    }
    452 
    453    /* draw the line strips */
    454    LIST_FOR_EACH_ENTRY(gr, &pane->graph_list, head) {
    455       hud_draw_graph_line_strip(hud, gr, pane->inner_x1, pane->inner_y2, pane->yscale);
    456    }
    457 }
    458 
    459 static void
    460 hud_alloc_vertices(struct hud_context *hud, struct vertex_queue *v,
    461                    unsigned num_vertices, unsigned stride)
    462 {
    463    v->num_vertices = 0;
    464    v->max_num_vertices = num_vertices;
    465    v->vbuf.stride = stride;
    466    u_upload_alloc(hud->uploader, 0, v->vbuf.stride * v->max_num_vertices,
    467                   16, &v->vbuf.buffer_offset, &v->vbuf.buffer,
    468                   (void**)&v->vertices);
    469 }
    470 
    471 /**
    472  * Draw the HUD to the texture \p tex.
    473  * The texture is usually the back buffer being displayed.
    474  */
    475 void
    476 hud_draw(struct hud_context *hud, struct pipe_resource *tex)
    477 {
    478    struct cso_context *cso = hud->cso;
    479    struct pipe_context *pipe = hud->pipe;
    480    struct pipe_framebuffer_state fb;
    481    struct pipe_surface surf_templ, *surf;
    482    struct pipe_viewport_state viewport;
    483    const struct pipe_sampler_state *sampler_states[] =
    484          { &hud->font_sampler_state };
    485    struct hud_pane *pane;
    486    struct hud_graph *gr, *next;
    487 
    488    if (!huds_visible)
    489       return;
    490 
    491    hud->fb_width = tex->width0;
    492    hud->fb_height = tex->height0;
    493    hud->constants.two_div_fb_width = 2.0f / hud->fb_width;
    494    hud->constants.two_div_fb_height = 2.0f / hud->fb_height;
    495 
    496    cso_save_state(cso, (CSO_BIT_FRAMEBUFFER |
    497                         CSO_BIT_SAMPLE_MASK |
    498                         CSO_BIT_MIN_SAMPLES |
    499                         CSO_BIT_BLEND |
    500                         CSO_BIT_DEPTH_STENCIL_ALPHA |
    501                         CSO_BIT_FRAGMENT_SHADER |
    502                         CSO_BIT_FRAGMENT_SAMPLER_VIEWS |
    503                         CSO_BIT_FRAGMENT_SAMPLERS |
    504                         CSO_BIT_RASTERIZER |
    505                         CSO_BIT_VIEWPORT |
    506                         CSO_BIT_STREAM_OUTPUTS |
    507                         CSO_BIT_GEOMETRY_SHADER |
    508                         CSO_BIT_TESSCTRL_SHADER |
    509                         CSO_BIT_TESSEVAL_SHADER |
    510                         CSO_BIT_VERTEX_SHADER |
    511                         CSO_BIT_VERTEX_ELEMENTS |
    512                         CSO_BIT_AUX_VERTEX_BUFFER_SLOT |
    513                         CSO_BIT_PAUSE_QUERIES |
    514                         CSO_BIT_RENDER_CONDITION));
    515    cso_save_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
    516 
    517    /* set states */
    518    memset(&surf_templ, 0, sizeof(surf_templ));
    519    surf_templ.format = tex->format;
    520 
    521    /* Without this, AA lines look thinner if they are between 2 pixels
    522     * because the alpha is 0.5 on both pixels. (it's ugly)
    523     *
    524     * sRGB makes the width of all AA lines look the same.
    525     */
    526    if (hud->has_srgb) {
    527       enum pipe_format srgb_format = util_format_srgb(tex->format);
    528 
    529       if (srgb_format != PIPE_FORMAT_NONE)
    530          surf_templ.format = srgb_format;
    531    }
    532    surf = pipe->create_surface(pipe, tex, &surf_templ);
    533 
    534    memset(&fb, 0, sizeof(fb));
    535    fb.nr_cbufs = 1;
    536    fb.cbufs[0] = surf;
    537    fb.zsbuf = NULL;
    538    fb.width = hud->fb_width;
    539    fb.height = hud->fb_height;
    540 
    541    viewport.scale[0] = 0.5f * hud->fb_width;
    542    viewport.scale[1] = 0.5f * hud->fb_height;
    543    viewport.scale[2] = 1.0f;
    544    viewport.translate[0] = 0.5f * hud->fb_width;
    545    viewport.translate[1] = 0.5f * hud->fb_height;
    546    viewport.translate[2] = 0.0f;
    547 
    548    cso_set_framebuffer(cso, &fb);
    549    cso_set_sample_mask(cso, ~0);
    550    cso_set_min_samples(cso, 1);
    551    cso_set_depth_stencil_alpha(cso, &hud->dsa);
    552    cso_set_rasterizer(cso, &hud->rasterizer);
    553    cso_set_viewport(cso, &viewport);
    554    cso_set_stream_outputs(cso, 0, NULL, NULL);
    555    cso_set_tessctrl_shader_handle(cso, NULL);
    556    cso_set_tesseval_shader_handle(cso, NULL);
    557    cso_set_geometry_shader_handle(cso, NULL);
    558    cso_set_vertex_shader_handle(cso, hud->vs);
    559    cso_set_vertex_elements(cso, 2, hud->velems);
    560    cso_set_render_condition(cso, NULL, FALSE, 0);
    561    cso_set_sampler_views(cso, PIPE_SHADER_FRAGMENT, 1,
    562                          &hud->font_sampler_view);
    563    cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, 1, sampler_states);
    564    cso_set_constant_buffer(cso, PIPE_SHADER_VERTEX, 0, &hud->constbuf);
    565 
    566    /* prepare vertex buffers */
    567    hud_alloc_vertices(hud, &hud->bg, 16 * 256, 2 * sizeof(float));
    568    hud_alloc_vertices(hud, &hud->whitelines, 4 * 256, 2 * sizeof(float));
    569    hud_alloc_vertices(hud, &hud->text, 16 * 1024, 4 * sizeof(float));
    570 
    571    /* prepare all graphs */
    572    hud_batch_query_update(hud->batch_query);
    573 
    574    LIST_FOR_EACH_ENTRY(pane, &hud->pane_list, head) {
    575       LIST_FOR_EACH_ENTRY(gr, &pane->graph_list, head) {
    576          gr->query_new_value(gr);
    577       }
    578 
    579       if (pane->sort_items) {
    580          LIST_FOR_EACH_ENTRY_SAFE(gr, next, &pane->graph_list, head) {
    581             /* ignore the last one */
    582             if (&gr->head == pane->graph_list.prev)
    583                continue;
    584 
    585             /* This is an incremental bubble sort, because we only do one pass
    586              * per frame. It will eventually reach an equilibrium.
    587              */
    588             if (gr->current_value <
    589                 LIST_ENTRY(struct hud_graph, next, head)->current_value) {
    590                LIST_DEL(&gr->head);
    591                LIST_ADD(&gr->head, &next->head);
    592             }
    593          }
    594       }
    595 
    596       hud_pane_accumulate_vertices(hud, pane);
    597    }
    598 
    599    /* unmap the uploader's vertex buffer before drawing */
    600    u_upload_unmap(hud->uploader);
    601 
    602    /* draw accumulated vertices for background quads */
    603    cso_set_blend(cso, &hud->alpha_blend);
    604    cso_set_fragment_shader_handle(hud->cso, hud->fs_color);
    605 
    606    if (hud->bg.num_vertices) {
    607       hud->constants.color[0] = 0;
    608       hud->constants.color[1] = 0;
    609       hud->constants.color[2] = 0;
    610       hud->constants.color[3] = 0.666f;
    611       hud->constants.translate[0] = 0;
    612       hud->constants.translate[1] = 0;
    613       hud->constants.scale[0] = 1;
    614       hud->constants.scale[1] = 1;
    615 
    616       cso_set_constant_buffer(cso, PIPE_SHADER_VERTEX, 0, &hud->constbuf);
    617       cso_set_vertex_buffers(cso, cso_get_aux_vertex_buffer_slot(cso), 1,
    618                              &hud->bg.vbuf);
    619       cso_draw_arrays(cso, PIPE_PRIM_QUADS, 0, hud->bg.num_vertices);
    620    }
    621    pipe_resource_reference(&hud->bg.vbuf.buffer, NULL);
    622 
    623    /* draw accumulated vertices for white lines */
    624    cso_set_blend(cso, &hud->no_blend);
    625 
    626    hud->constants.color[0] = 1;
    627    hud->constants.color[1] = 1;
    628    hud->constants.color[2] = 1;
    629    hud->constants.color[3] = 1;
    630    hud->constants.translate[0] = 0;
    631    hud->constants.translate[1] = 0;
    632    hud->constants.scale[0] = 1;
    633    hud->constants.scale[1] = 1;
    634    cso_set_constant_buffer(cso, PIPE_SHADER_VERTEX, 0, &hud->constbuf);
    635 
    636    if (hud->whitelines.num_vertices) {
    637       cso_set_vertex_buffers(cso, cso_get_aux_vertex_buffer_slot(cso), 1,
    638                              &hud->whitelines.vbuf);
    639       cso_set_fragment_shader_handle(hud->cso, hud->fs_color);
    640       cso_draw_arrays(cso, PIPE_PRIM_LINES, 0, hud->whitelines.num_vertices);
    641    }
    642    pipe_resource_reference(&hud->whitelines.vbuf.buffer, NULL);
    643 
    644    /* draw accumulated vertices for text */
    645    cso_set_blend(cso, &hud->alpha_blend);
    646    if (hud->text.num_vertices) {
    647       cso_set_vertex_buffers(cso, cso_get_aux_vertex_buffer_slot(cso), 1,
    648                              &hud->text.vbuf);
    649       cso_set_fragment_shader_handle(hud->cso, hud->fs_text);
    650       cso_draw_arrays(cso, PIPE_PRIM_QUADS, 0, hud->text.num_vertices);
    651    }
    652    pipe_resource_reference(&hud->text.vbuf.buffer, NULL);
    653 
    654    /* draw the rest */
    655    cso_set_rasterizer(cso, &hud->rasterizer_aa_lines);
    656    LIST_FOR_EACH_ENTRY(pane, &hud->pane_list, head) {
    657       if (pane)
    658          hud_pane_draw_colored_objects(hud, pane);
    659    }
    660 
    661    cso_restore_state(cso);
    662    cso_restore_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
    663 
    664    pipe_surface_reference(&surf, NULL);
    665 
    666    /* Start queries. */
    667    hud_batch_query_begin(hud->batch_query);
    668 
    669    LIST_FOR_EACH_ENTRY(pane, &hud->pane_list, head) {
    670       LIST_FOR_EACH_ENTRY(gr, &pane->graph_list, head) {
    671          if (gr->begin_query)
    672             gr->begin_query(gr);
    673       }
    674    }
    675 }
    676 
    677 static void
    678 fixup_bytes(enum pipe_driver_query_type type, int position, uint64_t *exp10)
    679 {
    680    if (type == PIPE_DRIVER_QUERY_TYPE_BYTES && position % 3 == 0)
    681       *exp10 = (*exp10 / 1000) * 1024;
    682 }
    683 
    684 /**
    685  * Set the maximum value for the Y axis of the graph.
    686  * This scales the graph accordingly.
    687  */
    688 void
    689 hud_pane_set_max_value(struct hud_pane *pane, uint64_t value)
    690 {
    691    double leftmost_digit;
    692    uint64_t exp10;
    693    int i;
    694 
    695    /* The following code determines the max_value in the graph as well as
    696     * how many describing lines are drawn. The max_value is rounded up,
    697     * so that all drawn numbers are rounded for readability.
    698     * We want to print multiples of a simple number instead of multiples of
    699     * hard-to-read numbers like 1.753.
    700     */
    701 
    702    /* Find the left-most digit. */
    703    exp10 = 1;
    704    for (i = 0; value > 9 * exp10; i++) {
    705       exp10 *= 10;
    706       fixup_bytes(pane->type, i + 1, &exp10);
    707    }
    708 
    709    leftmost_digit = DIV_ROUND_UP(value, exp10);
    710 
    711    /* Round 9 to 10. */
    712    if (leftmost_digit == 9) {
    713       leftmost_digit = 1;
    714       exp10 *= 10;
    715       fixup_bytes(pane->type, i + 1, &exp10);
    716    }
    717 
    718    switch ((unsigned)leftmost_digit) {
    719    case 1:
    720       pane->last_line = 5; /* lines in +1/5 increments */
    721       break;
    722    case 2:
    723       pane->last_line = 8; /* lines in +1/4 increments. */
    724       break;
    725    case 3:
    726    case 4:
    727       pane->last_line = leftmost_digit * 2; /* lines in +1/2 increments */
    728       break;
    729    case 5:
    730    case 6:
    731    case 7:
    732    case 8:
    733       pane->last_line = leftmost_digit; /* lines in +1 increments */
    734       break;
    735    default:
    736       assert(0);
    737    }
    738 
    739    /* Truncate {3,4} to {2.5, 3.5} if possible. */
    740    for (i = 3; i <= 4; i++) {
    741       if (leftmost_digit == i && value <= (i - 0.5) * exp10) {
    742          leftmost_digit = i - 0.5;
    743          pane->last_line = leftmost_digit * 2; /* lines in +1/2 increments. */
    744       }
    745    }
    746 
    747    /* Truncate 2 to a multiple of 0.2 in (1, 1.6] if possible. */
    748    if (leftmost_digit == 2) {
    749       for (i = 1; i <= 3; i++) {
    750          if (value <= (1 + i*0.2) * exp10) {
    751             leftmost_digit = 1 + i*0.2;
    752             pane->last_line = 5 + i; /* lines in +1/5 increments. */
    753             break;
    754          }
    755       }
    756    }
    757 
    758    pane->max_value = leftmost_digit * exp10;
    759    pane->yscale = -(int)pane->inner_height / (float)pane->max_value;
    760 }
    761 
    762 static void
    763 hud_pane_update_dyn_ceiling(struct hud_graph *gr, struct hud_pane *pane)
    764 {
    765    unsigned i;
    766    float tmp = 0.0f;
    767 
    768    if (pane->dyn_ceil_last_ran != gr->index) {
    769       LIST_FOR_EACH_ENTRY(gr, &pane->graph_list, head) {
    770          for (i = 0; i <  gr->num_vertices; ++i) {
    771             tmp = gr->vertices[i * 2 + 1] > tmp ?
    772                   gr->vertices[i * 2 + 1] : tmp;
    773          }
    774       }
    775 
    776       /* Avoid setting it lower than the initial starting height. */
    777       tmp = tmp > pane->initial_max_value ? tmp : pane->initial_max_value;
    778       hud_pane_set_max_value(pane, tmp);
    779    }
    780 
    781    /*
    782     * Mark this adjustment run so we could avoid repeating a full update
    783     * again needlessly in case the pane has more than one graph.
    784     */
    785    pane->dyn_ceil_last_ran = gr->index;
    786 }
    787 
    788 static struct hud_pane *
    789 hud_pane_create(unsigned x1, unsigned y1, unsigned x2, unsigned y2,
    790                 unsigned period, uint64_t max_value, uint64_t ceiling,
    791                 boolean dyn_ceiling, boolean sort_items)
    792 {
    793    struct hud_pane *pane = CALLOC_STRUCT(hud_pane);
    794 
    795    if (!pane)
    796       return NULL;
    797 
    798    pane->x1 = x1;
    799    pane->y1 = y1;
    800    pane->x2 = x2;
    801    pane->y2 = y2;
    802    pane->inner_x1 = x1 + 1;
    803    pane->inner_x2 = x2 - 1;
    804    pane->inner_y1 = y1 + 1;
    805    pane->inner_y2 = y2 - 1;
    806    pane->inner_width = pane->inner_x2 - pane->inner_x1;
    807    pane->inner_height = pane->inner_y2 - pane->inner_y1;
    808    pane->period = period;
    809    pane->max_num_vertices = (x2 - x1 + 2) / 2;
    810    pane->ceiling = ceiling;
    811    pane->dyn_ceiling = dyn_ceiling;
    812    pane->dyn_ceil_last_ran = 0;
    813    pane->sort_items = sort_items;
    814    pane->initial_max_value = max_value;
    815    hud_pane_set_max_value(pane, max_value);
    816    LIST_INITHEAD(&pane->graph_list);
    817    return pane;
    818 }
    819 
    820 /* replace '-' with a space */
    821 static void
    822 strip_hyphens(char *s)
    823 {
    824    while (*s) {
    825       if (*s == '-')
    826          *s = ' ';
    827       s++;
    828    }
    829 }
    830 
    831 /**
    832  * Add a graph to an existing pane.
    833  * One pane can contain multiple graphs over each other.
    834  */
    835 void
    836 hud_pane_add_graph(struct hud_pane *pane, struct hud_graph *gr)
    837 {
    838    static const float colors[][3] = {
    839       {0, 1, 0},
    840       {1, 0, 0},
    841       {0, 1, 1},
    842       {1, 0, 1},
    843       {1, 1, 0},
    844       {0.5, 1, 0.5},
    845       {1, 0.5, 0.5},
    846       {0.5, 1, 1},
    847       {1, 0.5, 1},
    848       {1, 1, 0.5},
    849       {0, 0.5, 0},
    850       {0.5, 0, 0},
    851       {0, 0.5, 0.5},
    852       {0.5, 0, 0.5},
    853       {0.5, 0.5, 0},
    854    };
    855    unsigned color = pane->next_color % ARRAY_SIZE(colors);
    856 
    857    strip_hyphens(gr->name);
    858 
    859    gr->vertices = MALLOC(pane->max_num_vertices * sizeof(float) * 2);
    860    gr->color[0] = colors[color][0];
    861    gr->color[1] = colors[color][1];
    862    gr->color[2] = colors[color][2];
    863    gr->pane = pane;
    864    LIST_ADDTAIL(&gr->head, &pane->graph_list);
    865    pane->num_graphs++;
    866    pane->next_color++;
    867 }
    868 
    869 void
    870 hud_graph_add_value(struct hud_graph *gr, uint64_t value)
    871 {
    872    gr->current_value = value;
    873    value = value > gr->pane->ceiling ? gr->pane->ceiling : value;
    874 
    875    if (gr->fd)
    876       fprintf(gr->fd, "%" PRIu64 "\n", value);
    877 
    878    if (gr->index == gr->pane->max_num_vertices) {
    879       gr->vertices[0] = 0;
    880       gr->vertices[1] = gr->vertices[(gr->index-1)*2+1];
    881       gr->index = 1;
    882    }
    883    gr->vertices[(gr->index)*2+0] = (float) (gr->index * 2);
    884    gr->vertices[(gr->index)*2+1] = (float) value;
    885    gr->index++;
    886 
    887    if (gr->num_vertices < gr->pane->max_num_vertices) {
    888       gr->num_vertices++;
    889    }
    890 
    891    if (gr->pane->dyn_ceiling == true) {
    892       hud_pane_update_dyn_ceiling(gr, gr->pane);
    893    }
    894    if (value > gr->pane->max_value) {
    895       hud_pane_set_max_value(gr->pane, value);
    896    }
    897 }
    898 
    899 static void
    900 hud_graph_destroy(struct hud_graph *graph)
    901 {
    902    FREE(graph->vertices);
    903    if (graph->free_query_data)
    904       graph->free_query_data(graph->query_data);
    905    if (graph->fd)
    906       fclose(graph->fd);
    907    FREE(graph);
    908 }
    909 
    910 void
    911 hud_graph_set_dump_file(struct hud_graph *gr)
    912 {
    913 #ifndef PIPE_OS_WINDOWS
    914    const char *hud_dump_dir = getenv("GALLIUM_HUD_DUMP_DIR");
    915    char *dump_file;
    916 
    917    if (hud_dump_dir && access(hud_dump_dir, W_OK) == 0) {
    918       dump_file = malloc(strlen(hud_dump_dir) + sizeof("/") + sizeof(gr->name));
    919       if (dump_file) {
    920          strcpy(dump_file, hud_dump_dir);
    921          strcat(dump_file, "/");
    922          strcat(dump_file, gr->name);
    923          gr->fd = fopen(dump_file, "w+");
    924          free(dump_file);
    925       }
    926    }
    927 #endif
    928 }
    929 
    930 /**
    931  * Read a string from the environment variable.
    932  * The separators "+", ",", ":", and ";" terminate the string.
    933  * Return the number of read characters.
    934  */
    935 static int
    936 parse_string(const char *s, char *out)
    937 {
    938    int i;
    939 
    940    for (i = 0; *s && *s != '+' && *s != ',' && *s != ':' && *s != ';' && *s != '=';
    941         s++, out++, i++)
    942       *out = *s;
    943 
    944    *out = 0;
    945 
    946    if (*s && !i) {
    947       fprintf(stderr, "gallium_hud: syntax error: unexpected '%c' (%i) while "
    948               "parsing a string\n", *s, *s);
    949       fflush(stderr);
    950    }
    951 
    952    return i;
    953 }
    954 
    955 static char *
    956 read_pane_settings(char *str, unsigned * const x, unsigned * const y,
    957                unsigned * const width, unsigned * const height,
    958                uint64_t * const ceiling, boolean * const dyn_ceiling,
    959                boolean *reset_colors, boolean *sort_items)
    960 {
    961    char *ret = str;
    962    unsigned tmp;
    963 
    964    while (*str == '.') {
    965       ++str;
    966       switch (*str) {
    967       case 'x':
    968          ++str;
    969          *x = strtoul(str, &ret, 10);
    970          str = ret;
    971          break;
    972 
    973       case 'y':
    974          ++str;
    975          *y = strtoul(str, &ret, 10);
    976          str = ret;
    977          break;
    978 
    979       case 'w':
    980          ++str;
    981          tmp = strtoul(str, &ret, 10);
    982          *width = tmp > 80 ? tmp : 80; /* 80 is chosen arbitrarily */
    983          str = ret;
    984          break;
    985 
    986       /*
    987        * Prevent setting height to less than 50. If the height is set to less,
    988        * the text of the Y axis labels on the graph will start overlapping.
    989        */
    990       case 'h':
    991          ++str;
    992          tmp = strtoul(str, &ret, 10);
    993          *height = tmp > 50 ? tmp : 50;
    994          str = ret;
    995          break;
    996 
    997       case 'c':
    998          ++str;
    999          tmp = strtoul(str, &ret, 10);
   1000          *ceiling = tmp > 10 ? tmp : 10;
   1001          str = ret;
   1002          break;
   1003 
   1004       case 'd':
   1005          ++str;
   1006          ret = str;
   1007          *dyn_ceiling = true;
   1008          break;
   1009 
   1010       case 'r':
   1011          ++str;
   1012          ret = str;
   1013          *reset_colors = true;
   1014          break;
   1015 
   1016       case 's':
   1017          ++str;
   1018          ret = str;
   1019          *sort_items = true;
   1020          break;
   1021 
   1022       default:
   1023          fprintf(stderr, "gallium_hud: syntax error: unexpected '%c'\n", *str);
   1024          fflush(stderr);
   1025       }
   1026 
   1027    }
   1028 
   1029    return ret;
   1030 }
   1031 
   1032 static boolean
   1033 has_occlusion_query(struct pipe_screen *screen)
   1034 {
   1035    return screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY) != 0;
   1036 }
   1037 
   1038 static boolean
   1039 has_streamout(struct pipe_screen *screen)
   1040 {
   1041    return screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS) != 0;
   1042 }
   1043 
   1044 static boolean
   1045 has_pipeline_stats_query(struct pipe_screen *screen)
   1046 {
   1047    return screen->get_param(screen, PIPE_CAP_QUERY_PIPELINE_STATISTICS) != 0;
   1048 }
   1049 
   1050 static void
   1051 hud_parse_env_var(struct hud_context *hud, const char *env)
   1052 {
   1053    unsigned num, i;
   1054    char name_a[256], s[256];
   1055    char *name;
   1056    struct hud_pane *pane = NULL;
   1057    unsigned x = 10, y = 10;
   1058    unsigned width = 251, height = 100;
   1059    unsigned period = 500 * 1000;  /* default period (1/2 second) */
   1060    uint64_t ceiling = UINT64_MAX;
   1061    unsigned column_width = 251;
   1062    boolean dyn_ceiling = false;
   1063    boolean reset_colors = false;
   1064    boolean sort_items = false;
   1065    const char *period_env;
   1066 
   1067    /*
   1068     * The GALLIUM_HUD_PERIOD env var sets the graph update rate.
   1069     * The env var is in seconds (a float).
   1070     * Zero means update after every frame.
   1071     */
   1072    period_env = getenv("GALLIUM_HUD_PERIOD");
   1073    if (period_env) {
   1074       float p = (float) atof(period_env);
   1075       if (p >= 0.0f) {
   1076          period = (unsigned) (p * 1000 * 1000);
   1077       }
   1078    }
   1079 
   1080    while ((num = parse_string(env, name_a)) != 0) {
   1081       env += num;
   1082 
   1083       /* check for explicit location, size and etc. settings */
   1084       name = read_pane_settings(name_a, &x, &y, &width, &height, &ceiling,
   1085                                 &dyn_ceiling, &reset_colors, &sort_items);
   1086 
   1087      /*
   1088       * Keep track of overall column width to avoid pane overlapping in case
   1089       * later we create a new column while the bottom pane in the current
   1090       * column is less wide than the rest of the panes in it.
   1091       */
   1092      column_width = width > column_width ? width : column_width;
   1093 
   1094       if (!pane) {
   1095          pane = hud_pane_create(x, y, x + width, y + height, period, 10,
   1096                          ceiling, dyn_ceiling, sort_items);
   1097          if (!pane)
   1098             return;
   1099       }
   1100 
   1101       if (reset_colors) {
   1102          pane->next_color = 0;
   1103          reset_colors = false;
   1104       }
   1105 
   1106       /* Add a graph. */
   1107 #if HAVE_GALLIUM_EXTRA_HUD || HAVE_LIBSENSORS
   1108       char arg_name[64];
   1109 #endif
   1110       /* IF YOU CHANGE THIS, UPDATE print_help! */
   1111       if (strcmp(name, "fps") == 0) {
   1112          hud_fps_graph_install(pane);
   1113       }
   1114       else if (strcmp(name, "cpu") == 0) {
   1115          hud_cpu_graph_install(pane, ALL_CPUS);
   1116       }
   1117       else if (sscanf(name, "cpu%u%s", &i, s) == 1) {
   1118          hud_cpu_graph_install(pane, i);
   1119       }
   1120 #if HAVE_GALLIUM_EXTRA_HUD
   1121       else if (sscanf(name, "nic-rx-%s", arg_name) == 1) {
   1122          hud_nic_graph_install(pane, arg_name, NIC_DIRECTION_RX);
   1123       }
   1124       else if (sscanf(name, "nic-tx-%s", arg_name) == 1) {
   1125          hud_nic_graph_install(pane, arg_name, NIC_DIRECTION_TX);
   1126       }
   1127       else if (sscanf(name, "nic-rssi-%s", arg_name) == 1) {
   1128          hud_nic_graph_install(pane, arg_name, NIC_RSSI_DBM);
   1129          pane->type = PIPE_DRIVER_QUERY_TYPE_DBM;
   1130       }
   1131       else if (sscanf(name, "diskstat-rd-%s", arg_name) == 1) {
   1132          hud_diskstat_graph_install(pane, arg_name, DISKSTAT_RD);
   1133          pane->type = PIPE_DRIVER_QUERY_TYPE_BYTES;
   1134       }
   1135       else if (sscanf(name, "diskstat-wr-%s", arg_name) == 1) {
   1136          hud_diskstat_graph_install(pane, arg_name, DISKSTAT_WR);
   1137          pane->type = PIPE_DRIVER_QUERY_TYPE_BYTES;
   1138       }
   1139       else if (sscanf(name, "cpufreq-min-cpu%u", &i) == 1) {
   1140          hud_cpufreq_graph_install(pane, i, CPUFREQ_MINIMUM);
   1141          pane->type = PIPE_DRIVER_QUERY_TYPE_HZ;
   1142       }
   1143       else if (sscanf(name, "cpufreq-cur-cpu%u", &i) == 1) {
   1144          hud_cpufreq_graph_install(pane, i, CPUFREQ_CURRENT);
   1145          pane->type = PIPE_DRIVER_QUERY_TYPE_HZ;
   1146       }
   1147       else if (sscanf(name, "cpufreq-max-cpu%u", &i) == 1) {
   1148          hud_cpufreq_graph_install(pane, i, CPUFREQ_MAXIMUM);
   1149          pane->type = PIPE_DRIVER_QUERY_TYPE_HZ;
   1150       }
   1151 #endif
   1152 #if HAVE_LIBSENSORS
   1153       else if (sscanf(name, "sensors_temp_cu-%s", arg_name) == 1) {
   1154          hud_sensors_temp_graph_install(pane, arg_name,
   1155                                         SENSORS_TEMP_CURRENT);
   1156          pane->type = PIPE_DRIVER_QUERY_TYPE_TEMPERATURE;
   1157       }
   1158       else if (sscanf(name, "sensors_temp_cr-%s", arg_name) == 1) {
   1159          hud_sensors_temp_graph_install(pane, arg_name,
   1160                                         SENSORS_TEMP_CRITICAL);
   1161          pane->type = PIPE_DRIVER_QUERY_TYPE_TEMPERATURE;
   1162       }
   1163       else if (sscanf(name, "sensors_volt_cu-%s", arg_name) == 1) {
   1164          hud_sensors_temp_graph_install(pane, arg_name,
   1165                                         SENSORS_VOLTAGE_CURRENT);
   1166          pane->type = PIPE_DRIVER_QUERY_TYPE_VOLTS;
   1167       }
   1168       else if (sscanf(name, "sensors_curr_cu-%s", arg_name) == 1) {
   1169          hud_sensors_temp_graph_install(pane, arg_name,
   1170                                         SENSORS_CURRENT_CURRENT);
   1171          pane->type = PIPE_DRIVER_QUERY_TYPE_AMPS;
   1172       }
   1173       else if (sscanf(name, "sensors_pow_cu-%s", arg_name) == 1) {
   1174          hud_sensors_temp_graph_install(pane, arg_name,
   1175                                         SENSORS_POWER_CURRENT);
   1176          pane->type = PIPE_DRIVER_QUERY_TYPE_WATTS;
   1177       }
   1178 #endif
   1179       else if (strcmp(name, "samples-passed") == 0 &&
   1180                has_occlusion_query(hud->pipe->screen)) {
   1181          hud_pipe_query_install(&hud->batch_query, pane, hud->pipe,
   1182                                 "samples-passed",
   1183                                 PIPE_QUERY_OCCLUSION_COUNTER, 0, 0,
   1184                                 PIPE_DRIVER_QUERY_TYPE_UINT64,
   1185                                 PIPE_DRIVER_QUERY_RESULT_TYPE_AVERAGE,
   1186                                 0);
   1187       }
   1188       else if (strcmp(name, "primitives-generated") == 0 &&
   1189                has_streamout(hud->pipe->screen)) {
   1190          hud_pipe_query_install(&hud->batch_query, pane, hud->pipe,
   1191                                 "primitives-generated",
   1192                                 PIPE_QUERY_PRIMITIVES_GENERATED, 0, 0,
   1193                                 PIPE_DRIVER_QUERY_TYPE_UINT64,
   1194                                 PIPE_DRIVER_QUERY_RESULT_TYPE_AVERAGE,
   1195                                 0);
   1196       }
   1197       else {
   1198          boolean processed = FALSE;
   1199 
   1200          /* pipeline statistics queries */
   1201          if (has_pipeline_stats_query(hud->pipe->screen)) {
   1202             static const char *pipeline_statistics_names[] =
   1203             {
   1204                "ia-vertices",
   1205                "ia-primitives",
   1206                "vs-invocations",
   1207                "gs-invocations",
   1208                "gs-primitives",
   1209                "clipper-invocations",
   1210                "clipper-primitives-generated",
   1211                "ps-invocations",
   1212                "hs-invocations",
   1213                "ds-invocations",
   1214                "cs-invocations"
   1215             };
   1216             for (i = 0; i < ARRAY_SIZE(pipeline_statistics_names); ++i)
   1217                if (strcmp(name, pipeline_statistics_names[i]) == 0)
   1218                   break;
   1219             if (i < ARRAY_SIZE(pipeline_statistics_names)) {
   1220                hud_pipe_query_install(&hud->batch_query, pane, hud->pipe, name,
   1221                                       PIPE_QUERY_PIPELINE_STATISTICS, i,
   1222                                       0, PIPE_DRIVER_QUERY_TYPE_UINT64,
   1223                                       PIPE_DRIVER_QUERY_RESULT_TYPE_AVERAGE,
   1224                                       0);
   1225                processed = TRUE;
   1226             }
   1227          }
   1228 
   1229          /* driver queries */
   1230          if (!processed) {
   1231             if (!hud_driver_query_install(&hud->batch_query, pane, hud->pipe,
   1232                                           name)) {
   1233                fprintf(stderr, "gallium_hud: unknown driver query '%s'\n", name);
   1234                fflush(stderr);
   1235             }
   1236          }
   1237       }
   1238 
   1239       if (*env == ':') {
   1240          env++;
   1241 
   1242          if (!pane) {
   1243             fprintf(stderr, "gallium_hud: syntax error: unexpected ':', "
   1244                     "expected a name\n");
   1245             fflush(stderr);
   1246             break;
   1247          }
   1248 
   1249          num = parse_string(env, s);
   1250          env += num;
   1251 
   1252          if (num && sscanf(s, "%u", &i) == 1) {
   1253             hud_pane_set_max_value(pane, i);
   1254             pane->initial_max_value = i;
   1255          }
   1256          else {
   1257             fprintf(stderr, "gallium_hud: syntax error: unexpected '%c' (%i) "
   1258                             "after ':'\n", *env, *env);
   1259             fflush(stderr);
   1260          }
   1261       }
   1262 
   1263       if (*env == '=') {
   1264          env++;
   1265 
   1266          if (!pane) {
   1267             fprintf(stderr, "gallium_hud: syntax error: unexpected '=', "
   1268                     "expected a name\n");
   1269             fflush(stderr);
   1270             break;
   1271          }
   1272 
   1273          num = parse_string(env, s);
   1274          env += num;
   1275 
   1276          strip_hyphens(s);
   1277          if (!LIST_IS_EMPTY(&pane->graph_list)) {
   1278             struct hud_graph *graph;
   1279             graph = LIST_ENTRY(struct hud_graph, pane->graph_list.prev, head);
   1280             strncpy(graph->name, s, sizeof(graph->name)-1);
   1281             graph->name[sizeof(graph->name)-1] = 0;
   1282          }
   1283       }
   1284 
   1285       if (*env == 0)
   1286          break;
   1287 
   1288       /* parse a separator */
   1289       switch (*env) {
   1290       case '+':
   1291          env++;
   1292          break;
   1293 
   1294       case ',':
   1295          env++;
   1296          if (!pane)
   1297             break;
   1298 
   1299          y += height + hud->font.glyph_height * (pane->num_graphs + 2);
   1300          height = 100;
   1301 
   1302          if (pane && pane->num_graphs) {
   1303             LIST_ADDTAIL(&pane->head, &hud->pane_list);
   1304             pane = NULL;
   1305          }
   1306          break;
   1307 
   1308       case ';':
   1309          env++;
   1310          y = 10;
   1311          x += column_width + hud->font.glyph_width * 9;
   1312          height = 100;
   1313 
   1314          if (pane && pane->num_graphs) {
   1315             LIST_ADDTAIL(&pane->head, &hud->pane_list);
   1316             pane = NULL;
   1317          }
   1318 
   1319          /* Starting a new column; reset column width. */
   1320          column_width = 251;
   1321          break;
   1322 
   1323       default:
   1324          fprintf(stderr, "gallium_hud: syntax error: unexpected '%c'\n", *env);
   1325          fflush(stderr);
   1326       }
   1327 
   1328       /* Reset to defaults for the next pane in case these were modified. */
   1329       width = 251;
   1330       ceiling = UINT64_MAX;
   1331       dyn_ceiling = false;
   1332       sort_items = false;
   1333 
   1334    }
   1335 
   1336    if (pane) {
   1337       if (pane->num_graphs) {
   1338          LIST_ADDTAIL(&pane->head, &hud->pane_list);
   1339       }
   1340       else {
   1341          FREE(pane);
   1342       }
   1343    }
   1344 }
   1345 
   1346 static void
   1347 print_help(struct pipe_screen *screen)
   1348 {
   1349    int i, num_queries, num_cpus = hud_get_num_cpus();
   1350 
   1351    puts("Syntax: GALLIUM_HUD=name1[+name2][...][:value1][,nameI...][;nameJ...]");
   1352    puts("");
   1353    puts("  Names are identifiers of data sources which will be drawn as graphs");
   1354    puts("  in panes. Multiple graphs can be drawn in the same pane.");
   1355    puts("  There can be multiple panes placed in rows and columns.");
   1356    puts("");
   1357    puts("  '+' separates names which will share a pane.");
   1358    puts("  ':[value]' specifies the initial maximum value of the Y axis");
   1359    puts("             for the given pane.");
   1360    puts("  ',' creates a new pane below the last one.");
   1361    puts("  ';' creates a new pane at the top of the next column.");
   1362    puts("  '=' followed by a string, changes the name of the last data source");
   1363    puts("      to that string");
   1364    puts("");
   1365    puts("  Example: GALLIUM_HUD=\"cpu,fps;primitives-generated\"");
   1366    puts("");
   1367    puts("  Additionally, by prepending '.[identifier][value]' modifiers to");
   1368    puts("  a name, it is possible to explicitly set the location and size");
   1369    puts("  of a pane, along with limiting overall maximum value of the");
   1370    puts("  Y axis and activating dynamic readjustment of the Y axis.");
   1371    puts("  Several modifiers may be applied to the same pane simultaneously.");
   1372    puts("");
   1373    puts("  'x[value]' sets the location of the pane on the x axis relative");
   1374    puts("             to the upper-left corner of the viewport, in pixels.");
   1375    puts("  'y[value]' sets the location of the pane on the y axis relative");
   1376    puts("             to the upper-left corner of the viewport, in pixels.");
   1377    puts("  'w[value]' sets width of the graph pixels.");
   1378    puts("  'h[value]' sets height of the graph in pixels.");
   1379    puts("  'c[value]' sets the ceiling of the value of the Y axis.");
   1380    puts("             If the graph needs to draw values higher than");
   1381    puts("             the ceiling allows, the value is clamped.");
   1382    puts("  'd' activates dynamic Y axis readjustment to set the value of");
   1383    puts("      the Y axis to match the highest value still visible in the graph.");
   1384    puts("  'r' resets the color counter (the next color will be green)");
   1385    puts("  's' sort items below graphs in descending order");
   1386    puts("");
   1387    puts("  If 'c' and 'd' modifiers are used simultaneously, both are in effect:");
   1388    puts("  the Y axis does not go above the restriction imposed by 'c' while");
   1389    puts("  still adjusting the value of the Y axis down when appropriate.");
   1390    puts("");
   1391    puts("  Example: GALLIUM_HUD=\".w256.h64.x1600.y520.d.c1000fps+cpu,.datom-count\"");
   1392    puts("");
   1393    puts("  Available names:");
   1394    puts("    fps");
   1395    puts("    cpu");
   1396 
   1397    for (i = 0; i < num_cpus; i++)
   1398       printf("    cpu%i\n", i);
   1399 
   1400    if (has_occlusion_query(screen))
   1401       puts("    samples-passed");
   1402    if (has_streamout(screen))
   1403       puts("    primitives-generated");
   1404 
   1405    if (has_pipeline_stats_query(screen)) {
   1406       puts("    ia-vertices");
   1407       puts("    ia-primitives");
   1408       puts("    vs-invocations");
   1409       puts("    gs-invocations");
   1410       puts("    gs-primitives");
   1411       puts("    clipper-invocations");
   1412       puts("    clipper-primitives-generated");
   1413       puts("    ps-invocations");
   1414       puts("    hs-invocations");
   1415       puts("    ds-invocations");
   1416       puts("    cs-invocations");
   1417    }
   1418 
   1419 #if HAVE_GALLIUM_EXTRA_HUD
   1420    hud_get_num_disks(1);
   1421    hud_get_num_nics(1);
   1422    hud_get_num_cpufreq(1);
   1423 #endif
   1424 #if HAVE_LIBSENSORS
   1425    hud_get_num_sensors(1);
   1426 #endif
   1427 
   1428    if (screen->get_driver_query_info){
   1429       boolean skipping = false;
   1430       struct pipe_driver_query_info info;
   1431       num_queries = screen->get_driver_query_info(screen, 0, NULL);
   1432 
   1433       for (i = 0; i < num_queries; i++){
   1434          screen->get_driver_query_info(screen, i, &info);
   1435          if (info.flags & PIPE_DRIVER_QUERY_FLAG_DONT_LIST) {
   1436             if (!skipping)
   1437                puts("    ...");
   1438             skipping = true;
   1439          } else {
   1440             printf("    %s\n", info.name);
   1441             skipping = false;
   1442          }
   1443       }
   1444    }
   1445 
   1446    puts("");
   1447    fflush(stdout);
   1448 }
   1449 
   1450 struct hud_context *
   1451 hud_create(struct pipe_context *pipe, struct cso_context *cso)
   1452 {
   1453    struct pipe_screen *screen = pipe->screen;
   1454    struct hud_context *hud;
   1455    struct pipe_sampler_view view_templ;
   1456    unsigned i;
   1457    const char *env = debug_get_option("GALLIUM_HUD", NULL);
   1458 #ifdef PIPE_OS_UNIX
   1459    unsigned signo = debug_get_num_option("GALLIUM_HUD_TOGGLE_SIGNAL", 0);
   1460    static boolean sig_handled = FALSE;
   1461    struct sigaction action = {};
   1462 #endif
   1463    huds_visible = debug_get_bool_option("GALLIUM_HUD_VISIBLE", TRUE);
   1464 
   1465    if (!env || !*env)
   1466       return NULL;
   1467 
   1468    if (strcmp(env, "help") == 0) {
   1469       print_help(pipe->screen);
   1470       return NULL;
   1471    }
   1472 
   1473    hud = CALLOC_STRUCT(hud_context);
   1474    if (!hud)
   1475       return NULL;
   1476 
   1477    hud->pipe = pipe;
   1478    hud->cso = cso;
   1479    hud->uploader = u_upload_create(pipe, 256 * 1024,
   1480                                    PIPE_BIND_VERTEX_BUFFER, PIPE_USAGE_STREAM);
   1481 
   1482    /* font */
   1483    if (!util_font_create(pipe, UTIL_FONT_FIXED_8X13, &hud->font)) {
   1484       u_upload_destroy(hud->uploader);
   1485       FREE(hud);
   1486       return NULL;
   1487    }
   1488 
   1489    hud->has_srgb = screen->is_format_supported(screen,
   1490                                                PIPE_FORMAT_B8G8R8A8_SRGB,
   1491                                                PIPE_TEXTURE_2D, 0,
   1492                                                PIPE_BIND_RENDER_TARGET) != 0;
   1493 
   1494    /* blend state */
   1495    hud->no_blend.rt[0].colormask = PIPE_MASK_RGBA;
   1496 
   1497    hud->alpha_blend.rt[0].colormask = PIPE_MASK_RGBA;
   1498    hud->alpha_blend.rt[0].blend_enable = 1;
   1499    hud->alpha_blend.rt[0].rgb_func = PIPE_BLEND_ADD;
   1500    hud->alpha_blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
   1501    hud->alpha_blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_INV_SRC_ALPHA;
   1502    hud->alpha_blend.rt[0].alpha_func = PIPE_BLEND_ADD;
   1503    hud->alpha_blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ZERO;
   1504    hud->alpha_blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
   1505 
   1506    /* fragment shader */
   1507    hud->fs_color =
   1508          util_make_fragment_passthrough_shader(pipe,
   1509                                                TGSI_SEMANTIC_COLOR,
   1510                                                TGSI_INTERPOLATE_CONSTANT,
   1511                                                TRUE);
   1512 
   1513    {
   1514       /* Read a texture and do .xxxx swizzling. */
   1515       static const char *fragment_shader_text = {
   1516          "FRAG\n"
   1517          "DCL IN[0], GENERIC[0], LINEAR\n"
   1518          "DCL SAMP[0]\n"
   1519          "DCL SVIEW[0], RECT, FLOAT\n"
   1520          "DCL OUT[0], COLOR[0]\n"
   1521          "DCL TEMP[0]\n"
   1522 
   1523          "TEX TEMP[0], IN[0], SAMP[0], RECT\n"
   1524          "MOV OUT[0], TEMP[0].xxxx\n"
   1525          "END\n"
   1526       };
   1527 
   1528       struct tgsi_token tokens[1000];
   1529       struct pipe_shader_state state;
   1530 
   1531       if (!tgsi_text_translate(fragment_shader_text, tokens, ARRAY_SIZE(tokens))) {
   1532          assert(0);
   1533          pipe_resource_reference(&hud->font.texture, NULL);
   1534          u_upload_destroy(hud->uploader);
   1535          FREE(hud);
   1536          return NULL;
   1537       }
   1538       pipe_shader_state_from_tgsi(&state, tokens);
   1539       hud->fs_text = pipe->create_fs_state(pipe, &state);
   1540    }
   1541 
   1542    /* rasterizer */
   1543    hud->rasterizer.half_pixel_center = 1;
   1544    hud->rasterizer.bottom_edge_rule = 1;
   1545    hud->rasterizer.depth_clip = 1;
   1546    hud->rasterizer.line_width = 1;
   1547    hud->rasterizer.line_last_pixel = 1;
   1548 
   1549    hud->rasterizer_aa_lines = hud->rasterizer;
   1550    hud->rasterizer_aa_lines.line_smooth = 1;
   1551 
   1552    /* vertex shader */
   1553    {
   1554       static const char *vertex_shader_text = {
   1555          "VERT\n"
   1556          "DCL IN[0..1]\n"
   1557          "DCL OUT[0], POSITION\n"
   1558          "DCL OUT[1], COLOR[0]\n" /* color */
   1559          "DCL OUT[2], GENERIC[0]\n" /* texcoord */
   1560          /* [0] = color,
   1561           * [1] = (2/fb_width, 2/fb_height, xoffset, yoffset)
   1562           * [2] = (xscale, yscale, 0, 0) */
   1563          "DCL CONST[0..2]\n"
   1564          "DCL TEMP[0]\n"
   1565          "IMM[0] FLT32 { -1, 0, 0, 1 }\n"
   1566 
   1567          /* v = in * (xscale, yscale) + (xoffset, yoffset) */
   1568          "MAD TEMP[0].xy, IN[0], CONST[2].xyyy, CONST[1].zwww\n"
   1569          /* pos = v * (2 / fb_width, 2 / fb_height) - (1, 1) */
   1570          "MAD OUT[0].xy, TEMP[0], CONST[1].xyyy, IMM[0].xxxx\n"
   1571          "MOV OUT[0].zw, IMM[0]\n"
   1572 
   1573          "MOV OUT[1], CONST[0]\n"
   1574          "MOV OUT[2], IN[1]\n"
   1575          "END\n"
   1576       };
   1577 
   1578       struct tgsi_token tokens[1000];
   1579       struct pipe_shader_state state;
   1580       if (!tgsi_text_translate(vertex_shader_text, tokens, ARRAY_SIZE(tokens))) {
   1581          assert(0);
   1582          pipe_resource_reference(&hud->font.texture, NULL);
   1583          u_upload_destroy(hud->uploader);
   1584          FREE(hud);
   1585          return NULL;
   1586       }
   1587       pipe_shader_state_from_tgsi(&state, tokens);
   1588       hud->vs = pipe->create_vs_state(pipe, &state);
   1589    }
   1590 
   1591    /* vertex elements */
   1592    for (i = 0; i < 2; i++) {
   1593       hud->velems[i].src_offset = i * 2 * sizeof(float);
   1594       hud->velems[i].src_format = PIPE_FORMAT_R32G32_FLOAT;
   1595       hud->velems[i].vertex_buffer_index = cso_get_aux_vertex_buffer_slot(cso);
   1596    }
   1597 
   1598    /* sampler view */
   1599    u_sampler_view_default_template(
   1600          &view_templ, hud->font.texture, hud->font.texture->format);
   1601    hud->font_sampler_view = pipe->create_sampler_view(pipe, hud->font.texture,
   1602                                                       &view_templ);
   1603 
   1604    /* sampler state (for font drawing) */
   1605    hud->font_sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
   1606    hud->font_sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
   1607    hud->font_sampler_state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
   1608    hud->font_sampler_state.normalized_coords = 0;
   1609 
   1610    /* constants */
   1611    hud->constbuf.buffer_size = sizeof(hud->constants);
   1612    hud->constbuf.user_buffer = &hud->constants;
   1613 
   1614    LIST_INITHEAD(&hud->pane_list);
   1615 
   1616    /* setup sig handler once for all hud contexts */
   1617 #ifdef PIPE_OS_UNIX
   1618    if (!sig_handled && signo != 0) {
   1619       action.sa_sigaction = &signal_visible_handler;
   1620       action.sa_flags = SA_SIGINFO;
   1621 
   1622       if (signo >= NSIG)
   1623          fprintf(stderr, "gallium_hud: invalid signal %u\n", signo);
   1624       else if (sigaction(signo, &action, NULL) < 0)
   1625          fprintf(stderr, "gallium_hud: unable to set handler for signal %u\n", signo);
   1626       fflush(stderr);
   1627 
   1628       sig_handled = TRUE;
   1629    }
   1630 #endif
   1631 
   1632    hud_parse_env_var(hud, env);
   1633    return hud;
   1634 }
   1635 
   1636 void
   1637 hud_destroy(struct hud_context *hud)
   1638 {
   1639    struct pipe_context *pipe = hud->pipe;
   1640    struct hud_pane *pane, *pane_tmp;
   1641    struct hud_graph *graph, *graph_tmp;
   1642 
   1643    LIST_FOR_EACH_ENTRY_SAFE(pane, pane_tmp, &hud->pane_list, head) {
   1644       LIST_FOR_EACH_ENTRY_SAFE(graph, graph_tmp, &pane->graph_list, head) {
   1645          LIST_DEL(&graph->head);
   1646          hud_graph_destroy(graph);
   1647       }
   1648       LIST_DEL(&pane->head);
   1649       FREE(pane);
   1650    }
   1651 
   1652    hud_batch_query_cleanup(&hud->batch_query);
   1653    pipe->delete_fs_state(pipe, hud->fs_color);
   1654    pipe->delete_fs_state(pipe, hud->fs_text);
   1655    pipe->delete_vs_state(pipe, hud->vs);
   1656    pipe_sampler_view_reference(&hud->font_sampler_view, NULL);
   1657    pipe_resource_reference(&hud->font.texture, NULL);
   1658    u_upload_destroy(hud->uploader);
   1659    FREE(hud);
   1660 }
   1661