src/gallium/tests/graw/fp-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 #include <unistd.h>             /* for sleep() */
  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_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_R8G8B8A8_UNORM,
  36    PIPE_FORMAT_B8G8R8A8_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[4];
  56    float texcoord[4];
  57 };
  58
  59 /* Vertex data matches progs/fp/fp-tri.c, but flipped in Y dimension
  60  * so that the final images are the same.
  61  */
  62 static struct vertex vertices[] =
  63 {
  64    { { 0.9, 0.9, 0.0, 1.0 },
  65      { 0, 0, 1, 1 },
  66      { 1, 1, 0, 1 } },
  67
  68    { { 0.9,  -0.9, 0.0, 1.0 },
  69      { 1, 0, 0, 1 },
  70      { 1, -1, 0, 1 } },
  71
  72    { {-0.9,  0.0, 0.0, 1.0 },
  73      { 0, 1, 0, 1 },
  74      { -1, 0, 0, 1 } },
  75 };
  76
  77 static float constants[] =
  78 {  0.4, 0, 0,  1,
  79    1,   1, 1,  1,
  80    2,   2, 2,  2,
  81    4,   8, 16, 32,
  82
  83    3,  0, 0, 0,
  84    0, .5, 0, 0,
  85    0,  0, 1, 0,
  86    0,  0, 0, 1,
  87
  88    1, 0, 0, 0.5,
  89    0, 1, 0, 0.5,
  90    0, 0, 1, 0,
  91    0, 0, 0, 1,
  92 };
  93
  94 static void init_fs_constbuf( void )
  95 {
  96    struct pipe_resource templat;
  97    struct pipe_box box;
  98
  99    templat.target = PIPE_BUFFER;
 100    templat.format = PIPE_FORMAT_R8_UNORM;
 101    templat.width0 = sizeof(constants);
 102    templat.height0 = 1;
 103    templat.depth0 = 1;
 104    templat.last_level = 0;
 105    templat.nr_samples = 1;
 106    templat.bind = PIPE_BIND_CONSTANT_BUFFER;
 107
 108    constbuf = screen->resource_create(screen,
 109                                       &templat);
 110    if (constbuf == NULL)
 111       exit(4);
 112
 113
 114    u_box_2d(0,0,sizeof(constants),1, &box);
 115
 116    ctx->transfer_inline_write(ctx,
 117                               constbuf,
 118                               u_subresource(0,0),
 119                               PIPE_TRANSFER_WRITE,
 120                               &box,
 121                               constants,
 122                               sizeof constants,
 123                               sizeof constants);
 124
 125
 126    ctx->set_constant_buffer(ctx,
 127                             PIPE_SHADER_FRAGMENT, 0,
 128                             constbuf);
 129 }
 130
 131
 132 static void set_viewport( float x, float y,
 133                           float width, float height,
 134                           float near, float far)
 135 {
 136    float z = far;
 137    float half_width = (float)width / 2.0f;
 138    float half_height = (float)height / 2.0f;
 139    float half_depth = ((float)far - (float)near) / 2.0f;
 140    struct pipe_viewport_state vp;
 141
 142    vp.scale[0] = half_width;
 143    vp.scale[1] = half_height;
 144    vp.scale[2] = half_depth;
 145    vp.scale[3] = 1.0f;
 146
 147    vp.translate[0] = half_width + x;
 148    vp.translate[1] = half_height + y;
 149    vp.translate[2] = half_depth + z;
 150    vp.translate[3] = 0.0f;
 151
 152    ctx->set_viewport_state( ctx, &vp );
 153 }
 154
 155 static void set_vertices( void )
 156 {
 157    struct pipe_vertex_element ve[3];
 158    struct pipe_vertex_buffer vbuf;
 159    void *handle;
 160
 161    memset(ve, 0, sizeof ve);
 162
 163    ve[0].src_offset = Offset(struct vertex, position);
 164    ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 165    ve[1].src_offset = Offset(struct vertex, color);
 166    ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 167    ve[2].src_offset = Offset(struct vertex, texcoord);
 168    ve[2].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 169
 170    handle = ctx->create_vertex_elements_state(ctx, 3, ve);
 171    ctx->bind_vertex_elements_state(ctx, handle);
 172
 173
 174    vbuf.stride = sizeof( struct vertex );
 175    vbuf.max_index = sizeof(vertices) / vbuf.stride;
 176    vbuf.buffer_offset = 0;
 177    vbuf.buffer = screen->user_buffer_create(screen,
 178                                             vertices,
 179                                             sizeof(vertices),
 180                                             PIPE_BIND_VERTEX_BUFFER);
 181
 182    ctx->set_vertex_buffers(ctx, 1, &vbuf);
 183 }
 184
 185 static void set_vertex_shader( void )
 186 {
 187    void *handle;
 188    const char *text =
 189       "VERT\n"
 190       "DCL IN[0]\n"
 191       "DCL IN[1]\n"
 192       "DCL IN[2]\n"
 193       "DCL OUT[0], POSITION\n"
 194       "DCL OUT[1], COLOR[0]\n"
 195       "DCL OUT[2], GENERIC[0]\n"
 196       "  MOV OUT[0], IN[0]\n"
 197       "  MOV OUT[1], IN[1]\n"
 198       "  MOV OUT[2], IN[2]\n"
 199       "  END\n";
 200
 201    handle = graw_parse_vertex_shader(ctx, text);
 202    ctx->bind_vs_state(ctx, handle);
 203 }
 204
 205 static void set_fragment_shader( const char *filename )
 206 {
 207    FILE *f;
 208    char buf[50000];
 209    void *handle;
 210    int sz;
 211
 212    if ((f = fopen(filename, "r")) == NULL) {
 213       fprintf(stderr, "Couldn't open %s\n", filename);
 214       exit(1);
 215    }
 216
 217    sz = fread(buf, 1, sizeof(buf), f);
 218    if (!feof(f)) {
 219       printf("file too long\n");
 220       exit(1);
 221    }
 222    printf("%.*s\n", sz, buf);
 223    buf[sz] = 0;
 224
 225    handle = graw_parse_fragment_shader(ctx, buf);
 226    ctx->bind_fs_state(ctx, handle);
 227 }
 228
 229
 230 static void draw( void )
 231 {
 232    float clear_color[4] = {.1,.3,.5,0};
 233
 234    ctx->clear(ctx, PIPE_CLEAR_COLOR, clear_color, 0, 0);
 235    ctx->draw_arrays(ctx, PIPE_PRIM_TRIANGLES, 0, 3);
 236    ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
 237
 238 #if 0
 239    /* At the moment, libgraw leaks out/makes available some of the
 240     * symbols from gallium/auxiliary, including these debug helpers.
 241     * Will eventually want to bless some of these paths, and lock the
 242     * others down so they aren't accessible from test programs.
 243     *
 244     * This currently just happens to work on debug builds - a release
 245     * build will probably fail to link here:
 246     */
 247    debug_dump_surface_bmp(ctx, "result.bmp", surf);
 248 #endif
 249
 250    screen->flush_frontbuffer(screen, surf, window);
 251 }
 252
 253 #define SIZE 16
 254
 255 static void init_tex( void )
 256 {
 257    struct pipe_sampler_view sv_template;
 258    struct pipe_sampler_state sampler_desc;
 259    struct pipe_resource templat;
 260    struct pipe_box box;
 261    ubyte tex2d[SIZE][SIZE][4];
 262    int s, t;
 263
 264 #if (SIZE != 2)
 265    for (s = 0; s < SIZE; s++) {
 266       for (t = 0; t < SIZE; t++) {
 267          if (0) {
 268             int x = (s ^ t) & 1;
 269             tex2d[t][s][0] = (x) ? 0 : 63;
 270             tex2d[t][s][1] = (x) ? 0 : 128;
 271             tex2d[t][s][2] = 0;
 272             tex2d[t][s][3] = 0xff;
 273          }
 274          else {
 275             int x = ((s ^ t) >> 2) & 1;
 276             tex2d[t][s][0] = s*255/(SIZE-1);
 277             tex2d[t][s][1] = t*255/(SIZE-1);
 278             tex2d[t][s][2] = (x) ? 0 : 128;
 279             tex2d[t][s][3] = 0xff;
 280          }
 281       }
 282    }
 283 #else
 284    tex2d[0][0][0] = 0;
 285    tex2d[0][0][1] = 255;
 286    tex2d[0][0][2] = 255;
 287    tex2d[0][0][3] = 0;
 288
 289    tex2d[0][1][0] = 0;
 290    tex2d[0][1][1] = 0;
 291    tex2d[0][1][2] = 255;
 292    tex2d[0][1][3] = 255;
 293
 294    tex2d[1][0][0] = 255;
 295    tex2d[1][0][1] = 255;
 296    tex2d[1][0][2] = 0;
 297    tex2d[1][0][3] = 255;
 298
 299    tex2d[1][1][0] = 255;
 300    tex2d[1][1][1] = 0;
 301    tex2d[1][1][2] = 0;
 302    tex2d[1][1][3] = 255;
 303 #endif
 304
 305    templat.target = PIPE_TEXTURE_2D;
 306    templat.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 307    templat.width0 = SIZE;
 308    templat.height0 = SIZE;
 309    templat.depth0 = 1;
 310    templat.last_level = 0;
 311    templat.nr_samples = 1;
 312    templat.bind = PIPE_BIND_SAMPLER_VIEW;
 313
 314
 315    samptex = screen->resource_create(screen,
 316                                  &templat);
 317    if (samptex == NULL)
 318       exit(4);
 319
 320    u_box_2d(0,0,SIZE,SIZE, &box);
 321
 322    ctx->transfer_inline_write(ctx,
 323                               samptex,
 324                               u_subresource(0,0),
 325                               PIPE_TRANSFER_WRITE,
 326                               &box,
 327                               tex2d,
 328                               sizeof tex2d[0],
 329                               sizeof tex2d);
 330
 331    /* Possibly read back & compare against original data:
 332     */
 333    if (0)
 334    {
 335       struct pipe_transfer *t;
 336       uint32_t *ptr;
 337       t = pipe_get_transfer(ctx, samptex,
 338                             0, 0, 0, /* face, level, zslice */
 339                             PIPE_TRANSFER_READ,
 340                             0, 0, SIZE, SIZE); /* x, y, width, height */
 341
 342       ptr = ctx->transfer_map(ctx, t);
 343
 344       if (memcmp(ptr, tex2d, sizeof tex2d) != 0) {
 345          assert(0);
 346          exit(9);
 347       }
 348
 349       ctx->transfer_unmap(ctx, t);
 350
 351       ctx->transfer_destroy(ctx, t);
 352    }
 353
 354    memset(&sv_template, 0, sizeof sv_template);
 355    sv_template.format = samptex->format;
 356    sv_template.texture = samptex;
 357    sv_template.first_level = 0;
 358    sv_template.last_level = 0;
 359    sv_template.swizzle_r = 0;
 360    sv_template.swizzle_g = 1;
 361    sv_template.swizzle_b = 2;
 362    sv_template.swizzle_a = 3;
 363    sv = ctx->create_sampler_view(ctx, samptex, &sv_template);
 364    if (sv == NULL)
 365       exit(5);
 366
 367    ctx->set_fragment_sampler_views(ctx, 1, &sv);
 368
 369
 370    memset(&sampler_desc, 0, sizeof sampler_desc);
 371    sampler_desc.wrap_s = PIPE_TEX_WRAP_REPEAT;
 372    sampler_desc.wrap_t = PIPE_TEX_WRAP_REPEAT;
 373    sampler_desc.wrap_r = PIPE_TEX_WRAP_REPEAT;
 374    sampler_desc.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 375    sampler_desc.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 376    sampler_desc.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 377    sampler_desc.compare_mode = PIPE_TEX_COMPARE_NONE;
 378    sampler_desc.compare_func = 0;
 379    sampler_desc.normalized_coords = 1;
 380    sampler_desc.max_anisotropy = 0;
 381
 382    sampler = ctx->create_sampler_state(ctx, &sampler_desc);
 383    if (sampler == NULL)
 384       exit(6);
 385
 386    ctx->bind_fragment_sampler_states(ctx, 1, &sampler);
 387
 388 }
 389
 390 static void init( void )
 391 {
 392    struct pipe_framebuffer_state fb;
 393    struct pipe_resource templat;
 394    int i;
 395
 396    /* It's hard to say whether window or screen should be created
 397     * first.  Different environments would prefer one or the other.
 398     *
 399     * Also, no easy way of querying supported formats if the screen
 400     * cannot be created first.
 401     */
 402    for (i = 0;
 403         window == NULL && formats[i] != PIPE_FORMAT_NONE;
 404         i++) {
 405
 406       screen = graw_create_window_and_screen(0,0,WIDTH,HEIGHT,
 407                                              formats[i],
 408                                              &window);
 409    }
 410
 411    ctx = screen->context_create(screen, NULL);
 412    if (ctx == NULL)
 413       exit(3);
 414
 415    templat.target = PIPE_TEXTURE_2D;
 416    templat.format = formats[i];
 417    templat.width0 = WIDTH;
 418    templat.height0 = HEIGHT;
 419    templat.depth0 = 1;
 420    templat.last_level = 0;
 421    templat.nr_samples = 1;
 422    templat.bind = (PIPE_BIND_RENDER_TARGET |
 423                    PIPE_BIND_DISPLAY_TARGET);
 424
 425    rttex = screen->resource_create(screen,
 426                                  &templat);
 427    if (rttex == NULL)
 428       exit(4);
 429
 430    surf = screen->get_tex_surface(screen, rttex, 0, 0, 0,
 431                                   PIPE_BIND_RENDER_TARGET |
 432                                   PIPE_BIND_DISPLAY_TARGET);
 433    if (surf == NULL)
 434       exit(5);
 435
 436    memset(&fb, 0, sizeof fb);
 437    fb.nr_cbufs = 1;
 438    fb.width = WIDTH;
 439    fb.height = HEIGHT;
 440    fb.cbufs[0] = surf;
 441
 442    ctx->set_framebuffer_state(ctx, &fb);
 443
 444    {
 445       struct pipe_blend_state blend;
 446       void *handle;
 447       memset(&blend, 0, sizeof blend);
 448       blend.rt[0].colormask = PIPE_MASK_RGBA;
 449       handle = ctx->create_blend_state(ctx, &blend);
 450       ctx->bind_blend_state(ctx, handle);
 451    }
 452
 453    {
 454       struct pipe_depth_stencil_alpha_state depthstencil;
 455       void *handle;
 456       memset(&depthstencil, 0, sizeof depthstencil);
 457       handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil);
 458       ctx->bind_depth_stencil_alpha_state(ctx, handle);
 459    }
 460
 461    {
 462       struct pipe_rasterizer_state rasterizer;
 463       void *handle;
 464       memset(&rasterizer, 0, sizeof rasterizer);
 465       rasterizer.cull_face = PIPE_FACE_NONE;
 466       rasterizer.gl_rasterization_rules = 1;
 467       handle = ctx->create_rasterizer_state(ctx, &rasterizer);
 468       ctx->bind_rasterizer_state(ctx, handle);
 469    }
 470
 471    set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000);
 472
 473    init_tex();
 474    init_fs_constbuf();
 475
 476    set_vertices();
 477    set_vertex_shader();
 478    set_fragment_shader(filename);
 479 }
 480
 481 static void args(int argc, char *argv[])
 482 {
 483    int i;
 484
 485    for (i = 1; i < argc; i++) {
 486       if (strcmp(argv[i], "-fps") == 0) {
 487          show_fps = 1;
 488       }
 489       else if (i == argc - 1) {
 490          filename = argv[i];
 491       }
 492       else {
 493          usage(argv[0]);
 494          exit(1);
 495       }
 496    }
 497
 498    if (!filename) {
 499       usage(argv[0]);
 500       exit(1);
 501    }
 502 }
 503
 504 int main( int argc, char *argv[] )
 505 {
 506    args(argc,argv);
 507    init();
 508
 509    graw_set_display_func( draw );
 510    graw_main_loop();
 511    return 0;
 512 }