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