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_inlines.h"
  15 #include "util/u_memory.h"      /* Offset() */
  16 #include "util/u_draw_quad.h"
  17 #include "util/u_box.h"
  18
  19 static const char *filename = NULL;
  20 unsigned show_fps = 0;
  21
  22
  23 static void usage(char *name)
  24 {
  25    fprintf(stderr, "usage: %s [ options ] shader_filename\n", name);
  26 #ifndef _WIN32
  27    fprintf(stderr, "\n" );
  28    fprintf(stderr, "options:\n");
  29    fprintf(stderr, "    -fps  show frames per second\n");
  30 #endif
  31 }
  32
  33
  34 enum pipe_format formats[] = {
  35    PIPE_FORMAT_RGBA8888_UNORM,
  36    PIPE_FORMAT_BGRA8888_UNORM,
  37    PIPE_FORMAT_NONE
  38 };
  39
  40 static const int WIDTH = 250;
  41 static const int HEIGHT = 250;
  42
  43 static struct pipe_screen *screen = NULL;
  44 static struct pipe_context *ctx = NULL;
  45 static struct pipe_resource *rttex = NULL;
  46 static struct pipe_resource *constbuf = NULL;
  47 static struct pipe_surface *surf = NULL;
  48 static struct pipe_sampler_view *sv = NULL;
  49 static void *sampler = NULL;
  50 static void *window = NULL;
  51 static struct pipe_resource *samptex = NULL;
  52
  53 struct vertex {
  54    float position[4];
  55    float color[3];
  56 };
  57
  58 /* Draw a regular mesh
  59  */
  60 #define MESH_SZ 16
  61 static struct vertex vertices[MESH_SZ * MESH_SZ];
  62
  63 static float constants[] =
  64 {  0.4, 0, 0,  1,
  65    1,   1, 1,  1,
  66    2,   2, 2,  2,
  67    4,   8, 16, 32,
  68
  69    3,  0, 0, 0,
  70    0, .5, 0, 0,
  71    0,  0, 1, 0,
  72    0,  0, 0, 1,
  73
  74    1, 0, 0, 0.5,
  75    0, 1, 0, 0.5,
  76    0, 0, 1, 0,
  77    0, 0, 0, 1,
  78 };
  79
  80 static void init_fs_constbuf( void )
  81 {
  82    struct pipe_resource templat;
  83    struct pipe_box box;
  84
  85    memset(&templat, 0, sizeof(templat));
  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.array_size = 1;
  92    templat.last_level = 0;
  93    templat.nr_samples = 1;
  94    templat.bind = PIPE_BIND_CONSTANT_BUFFER;
  95
  96    constbuf = screen->resource_create(screen,
  97                                       &templat);
  98    if (constbuf == NULL)
  99       exit(4);
 100
 101
 102    u_box_2d(0,0,sizeof(constants),1, &box);
 103
 104    ctx->buffer_subdata(ctx, constbuf,
 105                        PIPE_TRANSFER_WRITE,
 106                        0, sizeof(constants), constants);
 107
 108    pipe_set_constant_buffer(ctx,
 109                             PIPE_SHADER_VERTEX, 0,
 110                             constbuf);
 111 }
 112
 113
 114 static void set_viewport( float x, float y,
 115                           float width, float height,
 116                           float zNear, float zFar)
 117 {
 118    float z = zFar;
 119    float half_width = (float)width / 2.0f;
 120    float half_height = (float)height / 2.0f;
 121    float half_depth = ((float)zFar - (float)zNear) / 2.0f;
 122    struct pipe_viewport_state vp;
 123
 124    vp.scale[0] = half_width;
 125    vp.scale[1] = half_height;
 126    vp.scale[2] = half_depth;
 127
 128    vp.translate[0] = half_width + x;
 129    vp.translate[1] = half_height + y;
 130    vp.translate[2] = half_depth + z;
 131
 132    ctx->set_viewport_states( ctx, 0, 1, &vp );
 133 }
 134
 135 static void set_vertices( void )
 136 {
 137    struct pipe_vertex_element ve[2];
 138    struct pipe_vertex_buffer vbuf;
 139    void *handle;
 140    int x,y;
 141
 142    memset(ve, 0, sizeof ve);
 143
 144    ve[0].src_offset = Offset(struct vertex, position);
 145    ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 146    ve[1].src_offset = Offset(struct vertex, color);
 147    ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 148
 149    handle = ctx->create_vertex_elements_state(ctx, 2, ve);
 150    ctx->bind_vertex_elements_state(ctx, handle);
 151
 152    for (x = 0; x < MESH_SZ; x++) {
 153       for (y = 0; y < MESH_SZ; y++) {
 154          int i = y * MESH_SZ + x;
 155          vertices[i].position[0] = ((float)x)/MESH_SZ * 2.0 - 1.0;
 156          vertices[i].position[1] = ((float)y)/MESH_SZ * 2.0 - 1.0;
 157          vertices[i].position[2] = 0;
 158          vertices[i].position[3] = 1.0;
 159
 160          vertices[i].color[0] = .5;
 161          vertices[i].color[1] = (float)x / (float)MESH_SZ;
 162          vertices[i].color[2] = (float)y / (float)MESH_SZ;
 163       }
 164    }
 165
 166    memset(&vbuf, 0, sizeof vbuf);
 167
 168    vbuf.stride = sizeof( struct vertex );
 169    vbuf.buffer_offset = 0;
 170    vbuf.buffer.resource = pipe_buffer_create_with_data(ctx,
 171                                               PIPE_BIND_VERTEX_BUFFER,
 172                                               PIPE_USAGE_DEFAULT,
 173                                               sizeof(vertices),
 174                                               vertices);
 175
 176    ctx->set_vertex_buffers(ctx, 0, 1, &vbuf);
 177 }
 178
 179 static void set_vertex_shader( void )
 180 {
 181    FILE *f;
 182    char buf[50000];
 183    void *handle;
 184    int sz;
 185
 186    if ((f = fopen(filename, "r")) == NULL) {
 187       fprintf(stderr, "Couldn't open %s\n", filename);
 188       exit(1);
 189    }
 190
 191    sz = fread(buf, 1, sizeof(buf), f);
 192    if (!feof(f)) {
 193       printf("file too long\n");
 194       exit(1);
 195    }
 196    printf("%.*s\n", sz, buf);
 197    buf[sz] = 0;
 198
 199    handle = graw_parse_vertex_shader(ctx, buf);
 200    ctx->bind_vs_state(ctx, handle);
 201    fclose(f);
 202 }
 203
 204 static void set_fragment_shader( void )
 205 {
 206    void *handle;
 207    const char *text =
 208       "FRAG\n"
 209       "DCL IN[0], COLOR, LINEAR\n"
 210       "DCL OUT[0], COLOR\n"
 211       "  0: MOV OUT[0], IN[0]\n"
 212       "  1: END\n";
 213
 214    handle = graw_parse_fragment_shader(ctx, text);
 215    ctx->bind_fs_state(ctx, handle);
 216 }
 217
 218
 219
 220 static void draw( void )
 221 {
 222    union pipe_color_union clear_color = { {.1,.3,.5,0} };
 223
 224    ctx->clear(ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0);
 225    util_draw_arrays(ctx, PIPE_PRIM_POINTS, 0, ARRAY_SIZE(vertices));
 226    ctx->flush(ctx, NULL, 0);
 227
 228    graw_save_surface_to_file(ctx, surf, NULL);
 229
 230    screen->flush_frontbuffer(screen, rttex, 0, 0, window, NULL);
 231 }
 232
 233 #define SIZE 16
 234
 235 static void init_tex( void )
 236 {
 237    struct pipe_sampler_view sv_template;
 238    struct pipe_sampler_state sampler_desc;
 239    struct pipe_resource templat;
 240    struct pipe_box box;
 241    ubyte tex2d[SIZE][SIZE][4];
 242    int s, t;
 243
 244 #if (SIZE != 2)
 245    for (s = 0; s < SIZE; s++) {
 246       for (t = 0; t < SIZE; t++) {
 247          if (0) {
 248             int x = (s ^ t) & 1;
 249             tex2d[t][s][0] = (x) ? 0 : 63;
 250             tex2d[t][s][1] = (x) ? 0 : 128;
 251             tex2d[t][s][2] = 0;
 252             tex2d[t][s][3] = 0xff;
 253          }
 254          else {
 255             int x = ((s ^ t) >> 2) & 1;
 256             tex2d[t][s][0] = s*255/(SIZE-1);
 257             tex2d[t][s][1] = t*255/(SIZE-1);
 258             tex2d[t][s][2] = (x) ? 0 : 128;
 259             tex2d[t][s][3] = 0xff;
 260          }
 261       }
 262    }
 263 #else
 264    tex2d[0][0][0] = 0;
 265    tex2d[0][0][1] = 255;
 266    tex2d[0][0][2] = 255;
 267    tex2d[0][0][3] = 0;
 268
 269    tex2d[0][1][0] = 0;
 270    tex2d[0][1][1] = 0;
 271    tex2d[0][1][2] = 255;
 272    tex2d[0][1][3] = 255;
 273
 274    tex2d[1][0][0] = 255;
 275    tex2d[1][0][1] = 255;
 276    tex2d[1][0][2] = 0;
 277    tex2d[1][0][3] = 255;
 278
 279    tex2d[1][1][0] = 255;
 280    tex2d[1][1][1] = 0;
 281    tex2d[1][1][2] = 0;
 282    tex2d[1][1][3] = 255;
 283 #endif
 284
 285    memset(&templat, 0, sizeof(templat));
 286    templat.target = PIPE_TEXTURE_2D;
 287    templat.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 288    templat.width0 = SIZE;
 289    templat.height0 = SIZE;
 290    templat.depth0 = 1;
 291    templat.array_size = 1;
 292    templat.last_level = 0;
 293    templat.nr_samples = 1;
 294    templat.bind = PIPE_BIND_SAMPLER_VIEW;
 295
 296
 297    samptex = screen->resource_create(screen,
 298                                  &templat);
 299    if (samptex == NULL)
 300       exit(4);
 301
 302    u_box_2d(0,0,SIZE,SIZE, &box);
 303
 304    ctx->texture_subdata(ctx,
 305                         samptex,
 306                         0,
 307                         PIPE_TRANSFER_WRITE,
 308                         &box,
 309                         tex2d,
 310                         sizeof tex2d[0],
 311                         sizeof tex2d);
 312
 313    /* Possibly read back & compare against original data:
 314     */
 315    if (0)
 316    {
 317       struct pipe_transfer *t;
 318       uint32_t *ptr;
 319       ptr = pipe_transfer_map(ctx, samptex,
 320                               0, 0, /* level, layer */
 321                               PIPE_TRANSFER_READ,
 322                               0, 0, SIZE, SIZE, &t); /* x, y, width, height */
 323
 324       if (memcmp(ptr, tex2d, sizeof tex2d) != 0) {
 325          assert(0);
 326          exit(9);
 327       }
 328
 329       ctx->transfer_unmap(ctx, t);
 330    }
 331
 332    memset(&sv_template, 0, sizeof sv_template);
 333    sv_template.format = samptex->format;
 334    sv_template.texture = samptex;
 335    sv_template.swizzle_r = 0;
 336    sv_template.swizzle_g = 1;
 337    sv_template.swizzle_b = 2;
 338    sv_template.swizzle_a = 3;
 339    sv = ctx->create_sampler_view(ctx, samptex, &sv_template);
 340    if (sv == NULL)
 341       exit(5);
 342
 343    ctx->set_sampler_views(ctx, PIPE_SHADER_FRAGMENT, 0, 1, &sv);
 344
 345
 346    memset(&sampler_desc, 0, sizeof sampler_desc);
 347    sampler_desc.wrap_s = PIPE_TEX_WRAP_REPEAT;
 348    sampler_desc.wrap_t = PIPE_TEX_WRAP_REPEAT;
 349    sampler_desc.wrap_r = PIPE_TEX_WRAP_REPEAT;
 350    sampler_desc.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 351    sampler_desc.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 352    sampler_desc.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 353    sampler_desc.compare_mode = PIPE_TEX_COMPARE_NONE;
 354    sampler_desc.compare_func = 0;
 355    sampler_desc.normalized_coords = 1;
 356    sampler_desc.max_anisotropy = 0;
 357
 358    sampler = ctx->create_sampler_state(ctx, &sampler_desc);
 359    if (sampler == NULL)
 360       exit(6);
 361
 362    ctx->bind_sampler_states(ctx, PIPE_SHADER_FRAGMENT, 0, 1, &sampler);
 363
 364 }
 365
 366 static void init( void )
 367 {
 368    struct pipe_framebuffer_state fb;
 369    struct pipe_resource templat;
 370    struct pipe_surface surf_tmpl;
 371    int i;
 372
 373    /* It's hard to say whether window or screen should be created
 374     * first.  Different environments would prefer one or the other.
 375     *
 376     * Also, no easy way of querying supported formats if the screen
 377     * cannot be created first.
 378     */
 379    for (i = 0; formats[i] != PIPE_FORMAT_NONE; i++) {
 380       screen = graw_create_window_and_screen(0, 0, 300, 300,
 381                                              formats[i],
 382                                              &window);
 383       if (window && screen)
 384          break;
 385    }
 386    if (!screen || !window) {
 387       fprintf(stderr, "Unable to create window\n");
 388       exit(1);
 389    }
 390
 391    ctx = screen->context_create(screen, NULL, 0);
 392    if (ctx == NULL)
 393       exit(3);
 394
 395    memset(&templat, 0, sizeof(templat));
 396    templat.target = PIPE_TEXTURE_2D;
 397    templat.format = formats[i];
 398    templat.width0 = WIDTH;
 399    templat.height0 = HEIGHT;
 400    templat.depth0 = 1;
 401    templat.array_size = 1;
 402    templat.last_level = 0;
 403    templat.nr_samples = 1;
 404    templat.bind = (PIPE_BIND_RENDER_TARGET |
 405                    PIPE_BIND_DISPLAY_TARGET);
 406
 407    rttex = screen->resource_create(screen,
 408                                  &templat);
 409    if (rttex == NULL)
 410       exit(4);
 411
 412    surf_tmpl.format = templat.format;
 413    surf_tmpl.u.tex.level = 0;
 414    surf_tmpl.u.tex.first_layer = 0;
 415    surf_tmpl.u.tex.last_layer = 0;
 416    surf = ctx->create_surface(ctx, rttex, &surf_tmpl);
 417    if (surf == NULL)
 418       exit(5);
 419
 420    memset(&fb, 0, sizeof fb);
 421    fb.nr_cbufs = 1;
 422    fb.width = WIDTH;
 423    fb.height = HEIGHT;
 424    fb.cbufs[0] = surf;
 425
 426    ctx->set_framebuffer_state(ctx, &fb);
 427
 428    {
 429       struct pipe_blend_state blend;
 430       void *handle;
 431       memset(&blend, 0, sizeof blend);
 432       blend.rt[0].colormask = PIPE_MASK_RGBA;
 433       handle = ctx->create_blend_state(ctx, &blend);
 434       ctx->bind_blend_state(ctx, handle);
 435    }
 436
 437    {
 438       struct pipe_depth_stencil_alpha_state depthstencil;
 439       void *handle;
 440       memset(&depthstencil, 0, sizeof depthstencil);
 441       handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil);
 442       ctx->bind_depth_stencil_alpha_state(ctx, handle);
 443    }
 444
 445    {
 446       struct pipe_rasterizer_state rasterizer;
 447       void *handle;
 448       memset(&rasterizer, 0, sizeof rasterizer);
 449       rasterizer.cull_face = PIPE_FACE_NONE;
 450       rasterizer.point_size = 8.0;
 451       rasterizer.half_pixel_center = 1;
 452       rasterizer.bottom_edge_rule = 1;
 453       rasterizer.depth_clip = 1;
 454       handle = ctx->create_rasterizer_state(ctx, &rasterizer);
 455       ctx->bind_rasterizer_state(ctx, handle);
 456    }
 457
 458    set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000);
 459
 460    init_tex();
 461    init_fs_constbuf();
 462
 463    set_vertices();
 464    set_vertex_shader();
 465    set_fragment_shader();
 466 }
 467
 468 static void args(int argc, char *argv[])
 469 {
 470    int i;
 471
 472    for (i = 1; i < argc;) {
 473       if (graw_parse_args(&i, argc, argv)) {
 474          continue;
 475       }
 476       if (strcmp(argv[i], "-fps") == 0) {
 477          show_fps = 1;
 478          i++;
 479       }
 480       else if (i == argc - 1) {
 481          filename = argv[i];
 482          i++;
 483       }
 484       else {
 485          usage(argv[0]);
 486          exit(1);
 487       }
 488    }
 489
 490    if (!filename) {
 491       usage(argv[0]);
 492       exit(1);
 493    }
 494 }
 495
 496 int main( int argc, char *argv[] )
 497 {
 498    args(argc,argv);
 499    init();
 500
 501    graw_set_display_func( draw );
 502    graw_main_loop();
 503    return 0;
 504 }