src/gallium/tests/graw/vs-test.c

   1 /* Display a cleared blue window.  This demo has no dependencies on
   2  * any utility code, just the graw interface and gallium.
   3  */
   4
   5 #include "state_tracker/graw.h"
   6 #include "pipe/p_screen.h"
   7 #include "pipe/p_context.h"
   8 #include "pipe/p_shader_tokens.h"
   9 #include "pipe/p_state.h"
  10 #include "pipe/p_defines.h"
  11
  12 #include <stdio.h>              /* for fread(), etc */
  13
  14 #include "util/u_debug.h"       /* debug_dump_surface_bmp() */
  15 #include "util/u_inlines.h"
  16 #include "util/u_memory.h"      /* Offset() */
  17 #include "util/u_draw_quad.h"
  18 #include "util/u_box.h"
  19
  20 static const char *filename = NULL;
  21 unsigned show_fps = 0;
  22
  23
  24 static void usage(char *name)
  25 {
  26    fprintf(stderr, "usage: %s [ options ] shader_filename\n", name);
  27 #ifndef WIN32
  28    fprintf(stderr, "\n" );
  29    fprintf(stderr, "options:\n");
  30    fprintf(stderr, "    -fps  show frames per second\n");
  31 #endif
  32 }
  33
  34
  35 enum pipe_format formats[] = {
  36    PIPE_FORMAT_R8G8B8A8_UNORM,
  37    PIPE_FORMAT_B8G8R8A8_UNORM,
  38    PIPE_FORMAT_NONE
  39 };
  40
  41 static const int WIDTH = 250;
  42 static const int HEIGHT = 250;
  43
  44 static struct pipe_screen *screen = NULL;
  45 static struct pipe_context *ctx = NULL;
  46 static struct pipe_resource *rttex = NULL;
  47 static struct pipe_resource *constbuf = NULL;
  48 static struct pipe_surface *surf = NULL;
  49 static struct pipe_sampler_view *sv = NULL;
  50 static void *sampler = NULL;
  51 static void *window = NULL;
  52 static struct pipe_resource *samptex = NULL;
  53
  54 struct vertex {
  55    float position[4];
  56    float color[3];
  57 };
  58
  59 /* Draw a regular mesh
  60  */
  61 #define MESH_SZ 16
  62 static struct vertex vertices[MESH_SZ * MESH_SZ];
  63
  64 static float constants[] =
  65 {  0.4, 0, 0,  1,
  66    1,   1, 1,  1,
  67    2,   2, 2,  2,
  68    4,   8, 16, 32,
  69
  70    3,  0, 0, 0,
  71    0, .5, 0, 0,
  72    0,  0, 1, 0,
  73    0,  0, 0, 1,
  74
  75    1, 0, 0, 0.5,
  76    0, 1, 0, 0.5,
  77    0, 0, 1, 0,
  78    0, 0, 0, 1,
  79 };
  80
  81 static void init_fs_constbuf( void )
  82 {
  83    struct pipe_resource templat;
  84    struct pipe_box box;
  85
  86    templat.target = PIPE_BUFFER;
  87    templat.format = PIPE_FORMAT_R8_UNORM;
  88    templat.width0 = sizeof(constants);
  89    templat.height0 = 1;
  90    templat.depth0 = 1;
  91    templat.last_level = 0;
  92    templat.nr_samples = 1;
  93    templat.bind = PIPE_BIND_CONSTANT_BUFFER;
  94
  95    constbuf = screen->resource_create(screen,
  96                                       &templat);
  97    if (constbuf == NULL)
  98       exit(4);
  99
 100
 101    u_box_2d(0,0,sizeof(constants),1, &box);
 102
 103    ctx->transfer_inline_write(ctx,
 104                               constbuf,
 105                               u_subresource(0,0),
 106                               PIPE_TRANSFER_WRITE,
 107                               &box,
 108                               constants,
 109                               sizeof constants,
 110                               sizeof constants);
 111
 112
 113    ctx->set_constant_buffer(ctx,
 114                             PIPE_SHADER_FRAGMENT, 0,
 115                             constbuf);
 116 }
 117
 118
 119 static void set_viewport( float x, float y,
 120                           float width, float height,
 121                           float near, float far)
 122 {
 123    float z = far;
 124    float half_width = (float)width / 2.0f;
 125    float half_height = (float)height / 2.0f;
 126    float half_depth = ((float)far - (float)near) / 2.0f;
 127    struct pipe_viewport_state vp;
 128
 129    vp.scale[0] = half_width;
 130    vp.scale[1] = half_height;
 131    vp.scale[2] = half_depth;
 132    vp.scale[3] = 1.0f;
 133
 134    vp.translate[0] = half_width + x;
 135    vp.translate[1] = half_height + y;
 136    vp.translate[2] = half_depth + z;
 137    vp.translate[3] = 0.0f;
 138
 139    ctx->set_viewport_state( ctx, &vp );
 140 }
 141
 142 static void set_vertices( void )
 143 {
 144    struct pipe_vertex_element ve[2];
 145    struct pipe_vertex_buffer vbuf;
 146    void *handle;
 147    int x,y;
 148
 149    memset(ve, 0, sizeof ve);
 150
 151    ve[0].src_offset = Offset(struct vertex, position);
 152    ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 153    ve[1].src_offset = Offset(struct vertex, color);
 154    ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 155
 156    handle = ctx->create_vertex_elements_state(ctx, 2, ve);
 157    ctx->bind_vertex_elements_state(ctx, handle);
 158
 159    for (x = 0; x < MESH_SZ; x++) {
 160       for (y = 0; y < MESH_SZ; y++) {
 161          int i = y * MESH_SZ + x;
 162          vertices[i].position[0] = ((float)x)/MESH_SZ * 2.0 - 1.0;
 163          vertices[i].position[1] = ((float)y)/MESH_SZ * 2.0 - 1.0;
 164          vertices[i].position[2] = 0;
 165          vertices[i].position[3] = 1.0;
 166
 167          vertices[i].color[0] = .5;
 168          vertices[i].color[1] = (float)x / (float)MESH_SZ;
 169          vertices[i].color[2] = (float)y / (float)MESH_SZ;
 170       }
 171    }
 172
 173    vbuf.stride = sizeof( struct vertex );
 174    vbuf.max_index = sizeof(vertices) / vbuf.stride;
 175    vbuf.buffer_offset = 0;
 176    vbuf.buffer = screen->user_buffer_create(screen,
 177                                             vertices,
 178                                             sizeof(vertices),
 179                                             PIPE_BIND_VERTEX_BUFFER);
 180
 181    ctx->set_vertex_buffers(ctx, 1, &vbuf);
 182 }
 183
 184 static void set_vertex_shader( void )
 185 {
 186    FILE *f;
 187    char buf[50000];
 188    void *handle;
 189    int sz;
 190
 191    if ((f = fopen(filename, "r")) == NULL) {
 192       fprintf(stderr, "Couldn't open %s\n", filename);
 193       exit(1);
 194    }
 195
 196    sz = fread(buf, 1, sizeof(buf), f);
 197    if (!feof(f)) {
 198       printf("file too long\n");
 199       exit(1);
 200    }
 201    printf("%.*s\n", sz, buf);
 202    buf[sz] = 0;
 203
 204    handle = graw_parse_vertex_shader(ctx, buf);
 205    ctx->bind_vs_state(ctx, handle);
 206    fclose(f);
 207 }
 208
 209 static void set_fragment_shader( void )
 210 {
 211    void *handle;
 212    const char *text =
 213       "FRAG\n"
 214       "DCL IN[0], COLOR, LINEAR\n"
 215       "DCL OUT[0], COLOR\n"
 216       "  0: MOV OUT[0], IN[0]\n"
 217       "  1: END\n";
 218
 219    handle = graw_parse_fragment_shader(ctx, text);
 220    ctx->bind_fs_state(ctx, handle);
 221 }
 222
 223
 224
 225 static void draw( void )
 226 {
 227    float clear_color[4] = {.1,.3,.5,0};
 228
 229    ctx->clear(ctx, PIPE_CLEAR_COLOR, clear_color, 0, 0);
 230    util_draw_arrays(ctx, PIPE_PRIM_POINTS, 0, Elements(vertices));
 231    ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
 232
 233 #if 0
 234    /* At the moment, libgraw leaks out/makes available some of the
 235     * symbols from gallium/auxiliary, including these debug helpers.
 236     * Will eventually want to bless some of these paths, and lock the
 237     * others down so they aren't accessible from test programs.
 238     *
 239     * This currently just happens to work on debug builds - a release
 240     * build will probably fail to link here:
 241     */
 242    debug_dump_surface_bmp(ctx, "result.bmp", surf);
 243 #endif
 244
 245    screen->flush_frontbuffer(screen, surf, window);
 246 }
 247
 248 #define SIZE 16
 249
 250 static void init_tex( void )
 251 {
 252    struct pipe_sampler_view sv_template;
 253    struct pipe_sampler_state sampler_desc;
 254    struct pipe_resource templat;
 255    struct pipe_box box;
 256    ubyte tex2d[SIZE][SIZE][4];
 257    int s, t;
 258
 259 #if (SIZE != 2)
 260    for (s = 0; s < SIZE; s++) {
 261       for (t = 0; t < SIZE; t++) {
 262          if (0) {
 263             int x = (s ^ t) & 1;
 264             tex2d[t][s][0] = (x) ? 0 : 63;
 265             tex2d[t][s][1] = (x) ? 0 : 128;
 266             tex2d[t][s][2] = 0;
 267             tex2d[t][s][3] = 0xff;
 268          }
 269          else {
 270             int x = ((s ^ t) >> 2) & 1;
 271             tex2d[t][s][0] = s*255/(SIZE-1);
 272             tex2d[t][s][1] = t*255/(SIZE-1);
 273             tex2d[t][s][2] = (x) ? 0 : 128;
 274             tex2d[t][s][3] = 0xff;
 275          }
 276       }
 277    }
 278 #else
 279    tex2d[0][0][0] = 0;
 280    tex2d[0][0][1] = 255;
 281    tex2d[0][0][2] = 255;
 282    tex2d[0][0][3] = 0;
 283
 284    tex2d[0][1][0] = 0;
 285    tex2d[0][1][1] = 0;
 286    tex2d[0][1][2] = 255;
 287    tex2d[0][1][3] = 255;
 288
 289    tex2d[1][0][0] = 255;
 290    tex2d[1][0][1] = 255;
 291    tex2d[1][0][2] = 0;
 292    tex2d[1][0][3] = 255;
 293
 294    tex2d[1][1][0] = 255;
 295    tex2d[1][1][1] = 0;
 296    tex2d[1][1][2] = 0;
 297    tex2d[1][1][3] = 255;
 298 #endif
 299
 300    templat.target = PIPE_TEXTURE_2D;
 301    templat.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 302    templat.width0 = SIZE;
 303    templat.height0 = SIZE;
 304    templat.depth0 = 1;
 305    templat.last_level = 0;
 306    templat.nr_samples = 1;
 307    templat.bind = PIPE_BIND_SAMPLER_VIEW;
 308
 309
 310    samptex = screen->resource_create(screen,
 311                                  &templat);
 312    if (samptex == NULL)
 313       exit(4);
 314
 315    u_box_2d(0,0,SIZE,SIZE, &box);
 316
 317    ctx->transfer_inline_write(ctx,
 318                               samptex,
 319                               u_subresource(0,0),
 320                               PIPE_TRANSFER_WRITE,
 321                               &box,
 322                               tex2d,
 323                               sizeof tex2d[0],
 324                               sizeof tex2d);
 325
 326    /* Possibly read back & compare against original data:
 327     */
 328    if (0)
 329    {
 330       struct pipe_transfer *t;
 331       uint32_t *ptr;
 332       t = pipe_get_transfer(ctx, samptex,
 333                             0, 0, 0, /* face, level, zslice */
 334                             PIPE_TRANSFER_READ,
 335                             0, 0, SIZE, SIZE); /* x, y, width, height */
 336
 337       ptr = ctx->transfer_map(ctx, t);
 338
 339       if (memcmp(ptr, tex2d, sizeof tex2d) != 0) {
 340          assert(0);
 341          exit(9);
 342       }
 343
 344       ctx->transfer_unmap(ctx, t);
 345
 346       ctx->transfer_destroy(ctx, t);
 347    }
 348
 349    memset(&sv_template, 0, sizeof sv_template);
 350    sv_template.format = samptex->format;
 351    sv_template.texture = samptex;
 352    sv_template.first_level = 0;
 353    sv_template.last_level = 0;
 354    sv_template.swizzle_r = 0;
 355    sv_template.swizzle_g = 1;
 356    sv_template.swizzle_b = 2;
 357    sv_template.swizzle_a = 3;
 358    sv = ctx->create_sampler_view(ctx, samptex, &sv_template);
 359    if (sv == NULL)
 360       exit(5);
 361
 362    ctx->set_fragment_sampler_views(ctx, 1, &sv);
 363
 364
 365    memset(&sampler_desc, 0, sizeof sampler_desc);
 366    sampler_desc.wrap_s = PIPE_TEX_WRAP_REPEAT;
 367    sampler_desc.wrap_t = PIPE_TEX_WRAP_REPEAT;
 368    sampler_desc.wrap_r = PIPE_TEX_WRAP_REPEAT;
 369    sampler_desc.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 370    sampler_desc.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 371    sampler_desc.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 372    sampler_desc.compare_mode = PIPE_TEX_COMPARE_NONE;
 373    sampler_desc.compare_func = 0;
 374    sampler_desc.normalized_coords = 1;
 375    sampler_desc.max_anisotropy = 0;
 376
 377    sampler = ctx->create_sampler_state(ctx, &sampler_desc);
 378    if (sampler == NULL)
 379       exit(6);
 380
 381    ctx->bind_fragment_sampler_states(ctx, 1, &sampler);
 382
 383 }
 384
 385 static void init( void )
 386 {
 387    struct pipe_framebuffer_state fb;
 388    struct pipe_resource templat;
 389    int i;
 390
 391    /* It's hard to say whether window or screen should be created
 392     * first.  Different environments would prefer one or the other.
 393     *
 394     * Also, no easy way of querying supported formats if the screen
 395     * cannot be created first.
 396     */
 397    for (i = 0;
 398         window == NULL && formats[i] != PIPE_FORMAT_NONE;
 399         i++) {
 400
 401       screen = graw_create_window_and_screen(0,0,WIDTH,HEIGHT,
 402                                              formats[i],
 403                                              &window);
 404    }
 405
 406    ctx = screen->context_create(screen, NULL);
 407    if (ctx == NULL)
 408       exit(3);
 409
 410    templat.target = PIPE_TEXTURE_2D;
 411    templat.format = formats[i];
 412    templat.width0 = WIDTH;
 413    templat.height0 = HEIGHT;
 414    templat.depth0 = 1;
 415    templat.last_level = 0;
 416    templat.nr_samples = 1;
 417    templat.bind = (PIPE_BIND_RENDER_TARGET |
 418                    PIPE_BIND_DISPLAY_TARGET);
 419
 420    rttex = screen->resource_create(screen,
 421                                  &templat);
 422    if (rttex == NULL)
 423       exit(4);
 424
 425    surf = screen->get_tex_surface(screen, rttex, 0, 0, 0,
 426                                   PIPE_BIND_RENDER_TARGET |
 427                                   PIPE_BIND_DISPLAY_TARGET);
 428    if (surf == NULL)
 429       exit(5);
 430
 431    memset(&fb, 0, sizeof fb);
 432    fb.nr_cbufs = 1;
 433    fb.width = WIDTH;
 434    fb.height = HEIGHT;
 435    fb.cbufs[0] = surf;
 436
 437    ctx->set_framebuffer_state(ctx, &fb);
 438
 439    {
 440       struct pipe_blend_state blend;
 441       void *handle;
 442       memset(&blend, 0, sizeof blend);
 443       blend.rt[0].colormask = PIPE_MASK_RGBA;
 444       handle = ctx->create_blend_state(ctx, &blend);
 445       ctx->bind_blend_state(ctx, handle);
 446    }
 447
 448    {
 449       struct pipe_depth_stencil_alpha_state depthstencil;
 450       void *handle;
 451       memset(&depthstencil, 0, sizeof depthstencil);
 452       handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil);
 453       ctx->bind_depth_stencil_alpha_state(ctx, handle);
 454    }
 455
 456    {
 457       struct pipe_rasterizer_state rasterizer;
 458       void *handle;
 459       memset(&rasterizer, 0, sizeof rasterizer);
 460       rasterizer.cull_face = PIPE_FACE_NONE;
 461       rasterizer.point_size = 8.0;
 462       rasterizer.gl_rasterization_rules = 1;
 463       handle = ctx->create_rasterizer_state(ctx, &rasterizer);
 464       ctx->bind_rasterizer_state(ctx, handle);
 465    }
 466
 467    set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000);
 468
 469    init_tex();
 470    init_fs_constbuf();
 471
 472    set_vertices();
 473    set_vertex_shader();
 474    set_fragment_shader();
 475 }
 476
 477 static void args(int argc, char *argv[])
 478 {
 479    int i;
 480
 481    for (i = 1; i < argc; i++) {
 482       if (strcmp(argv[i], "-fps") == 0) {
 483          show_fps = 1;
 484       }
 485       else if (i == argc - 1) {
 486          filename = argv[i];
 487       }
 488       else {
 489          usage(argv[0]);
 490          exit(1);
 491       }
 492    }
 493
 494    if (!filename) {
 495       usage(argv[0]);
 496       exit(1);
 497    }
 498 }
 499
 500 int main( int argc, char *argv[] )
 501 {
 502    args(argc,argv);
 503    init();
 504
 505    graw_set_display_func( draw );
 506    graw_main_loop();
 507    return 0;
 508 }