src/gallium/tests/graw/quad-tex.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 "util/u_inlines.h"
  13 #include "util/u_memory.h"      /* Offset() */
  14 #include "util/u_draw_quad.h"
  15 #include "util/u_box.h"
  16
  17 enum pipe_format formats[] = {
  18    PIPE_FORMAT_R8G8B8A8_UNORM,
  19    PIPE_FORMAT_B8G8R8A8_UNORM,
  20    PIPE_FORMAT_NONE
  21 };
  22
  23 static const int WIDTH = 300;
  24 static const int HEIGHT = 300;
  25
  26 static struct pipe_screen *screen = NULL;
  27 static struct pipe_context *ctx = NULL;
  28 static struct pipe_resource *rttex = NULL;
  29 static struct pipe_resource *samptex = NULL;
  30 static struct pipe_surface *surf = NULL;
  31 static struct pipe_sampler_view *sv = NULL;
  32 static void *sampler = NULL;
  33 static void *window = NULL;
  34
  35 struct vertex {
  36    float position[4];
  37    float color[4];
  38 };
  39
  40 static struct vertex vertices[] =
  41 {
  42    { { 0.9, -0.9, 0.0, 1.0 },
  43      { 1, 0, 0, 1 } },
  44
  45    { { 0.9,  0.9, 0.0, 1.0 },
  46      { 1, 1, 0, 1 } },
  47
  48    { {-0.9,  0.9, 0.0, 1.0 },
  49      { 0, 1, 0, 1 } },
  50
  51    { {-0.9,  -0.9, 0.0, 1.0 },
  52      { 0, 0, 0, 1 } },
  53 };
  54
  55
  56
  57
  58 static void set_viewport( float x, float y,
  59                           float width, float height,
  60                           float near, float far)
  61 {
  62    float z = far;
  63    float half_width = (float)width / 2.0f;
  64    float half_height = (float)height / 2.0f;
  65    float half_depth = ((float)far - (float)near) / 2.0f;
  66    struct pipe_viewport_state vp;
  67
  68    vp.scale[0] = half_width;
  69    vp.scale[1] = half_height;
  70    vp.scale[2] = half_depth;
  71    vp.scale[3] = 1.0f;
  72
  73    vp.translate[0] = half_width + x;
  74    vp.translate[1] = half_height + y;
  75    vp.translate[2] = half_depth + z;
  76    vp.translate[3] = 0.0f;
  77
  78    ctx->set_viewport_state( ctx, &vp );
  79 }
  80
  81 static void set_vertices( void )
  82 {
  83    struct pipe_vertex_element ve[2];
  84    struct pipe_vertex_buffer vbuf;
  85    void *handle;
  86
  87    memset(ve, 0, sizeof ve);
  88
  89    ve[0].src_offset = Offset(struct vertex, position);
  90    ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
  91    ve[1].src_offset = Offset(struct vertex, color);
  92    ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
  93
  94    handle = ctx->create_vertex_elements_state(ctx, 2, ve);
  95    ctx->bind_vertex_elements_state(ctx, handle);
  96
  97
  98    vbuf.stride = sizeof( struct vertex );
  99    vbuf.max_index = sizeof(vertices) / vbuf.stride;
 100    vbuf.buffer_offset = 0;
 101    vbuf.buffer = screen->user_buffer_create(screen,
 102                                             vertices,
 103                                             sizeof(vertices),
 104                                             PIPE_BIND_VERTEX_BUFFER);
 105
 106    ctx->set_vertex_buffers(ctx, 1, &vbuf);
 107 }
 108
 109 static void set_vertex_shader( void )
 110 {
 111    void *handle;
 112    const char *text =
 113       "VERT\n"
 114       "DCL IN[0]\n"
 115       "DCL IN[1]\n"
 116       "DCL OUT[0], POSITION\n"
 117       "DCL OUT[1], GENERIC[0]\n"
 118       "  0: MOV OUT[1], IN[1]\n"
 119       "  1: MOV OUT[0], IN[0]\n"
 120       "  2: END\n";
 121
 122    handle = graw_parse_vertex_shader(ctx, text);
 123    ctx->bind_vs_state(ctx, handle);
 124 }
 125
 126 static void set_fragment_shader( void )
 127 {
 128    void *handle;
 129    const char *text =
 130       "FRAG\n"
 131       "DCL IN[0], GENERIC[0], PERSPECTIVE\n"
 132       "DCL OUT[0], COLOR\n"
 133       "DCL TEMP[0]\n"
 134       "DCL SAMP[0]\n"
 135       "  0: TXP TEMP[0], IN[0], SAMP[0], 2D\n"
 136       "  1: MOV OUT[0], TEMP[0]\n"
 137       "  2: END\n";
 138
 139    handle = graw_parse_fragment_shader(ctx, text);
 140    ctx->bind_fs_state(ctx, handle);
 141 }
 142
 143
 144 static void draw( void )
 145 {
 146    float clear_color[4] = {.5,.5,.5,1};
 147
 148    ctx->clear(ctx, PIPE_CLEAR_COLOR, clear_color, 0, 0);
 149    util_draw_arrays(ctx, PIPE_PRIM_QUADS, 0, 4);
 150    ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
 151
 152    graw_save_surface_to_file(ctx, surf, NULL);
 153
 154    screen->flush_frontbuffer(screen, rttex, 0, 0, window);
 155 }
 156
 157 #define SIZE 16
 158
 159 static void init_tex( void )
 160 {
 161    struct pipe_sampler_view sv_template;
 162    struct pipe_sampler_state sampler_desc;
 163    struct pipe_resource templat;
 164    struct pipe_box box;
 165    ubyte tex2d[SIZE][SIZE][4];
 166    int s, t;
 167
 168 #if (SIZE != 2)
 169    for (s = 0; s < SIZE; s++) {
 170       for (t = 0; t < SIZE; t++) {
 171          if (0) {
 172             int x = (s ^ t) & 1;
 173             tex2d[t][s][0] = (x) ? 0 : 63;
 174             tex2d[t][s][1] = (x) ? 0 : 128;
 175             tex2d[t][s][2] = 0;
 176             tex2d[t][s][3] = 0xff;
 177          }
 178          else {
 179             int x = ((s ^ t) >> 2) & 1;
 180             tex2d[t][s][0] = s*255/(SIZE-1);
 181             tex2d[t][s][1] = t*255/(SIZE-1);
 182             tex2d[t][s][2] = (x) ? 0 : 128;
 183             tex2d[t][s][3] = 0xff;
 184          }
 185       }
 186    }
 187 #else
 188    tex2d[0][0][0] = 0;
 189    tex2d[0][0][1] = 255;
 190    tex2d[0][0][2] = 255;
 191    tex2d[0][0][3] = 0;
 192
 193    tex2d[0][1][0] = 0;
 194    tex2d[0][1][1] = 0;
 195    tex2d[0][1][2] = 255;
 196    tex2d[0][1][3] = 255;
 197
 198    tex2d[1][0][0] = 255;
 199    tex2d[1][0][1] = 255;
 200    tex2d[1][0][2] = 0;
 201    tex2d[1][0][3] = 255;
 202
 203    tex2d[1][1][0] = 255;
 204    tex2d[1][1][1] = 0;
 205    tex2d[1][1][2] = 0;
 206    tex2d[1][1][3] = 255;
 207 #endif
 208
 209    templat.target = PIPE_TEXTURE_2D;
 210    templat.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 211    templat.width0 = SIZE;
 212    templat.height0 = SIZE;
 213    templat.depth0 = 1;
 214    templat.array_size = 1;
 215    templat.last_level = 0;
 216    templat.nr_samples = 1;
 217    templat.bind = PIPE_BIND_SAMPLER_VIEW;
 218
 219
 220    samptex = screen->resource_create(screen,
 221                                  &templat);
 222    if (samptex == NULL)
 223       exit(4);
 224
 225    u_box_2d(0,0,SIZE,SIZE, &box);
 226
 227    ctx->transfer_inline_write(ctx,
 228                               samptex,
 229                               0,
 230                               PIPE_TRANSFER_WRITE,
 231                               &box,
 232                               tex2d,
 233                               sizeof tex2d[0],
 234                               sizeof tex2d);
 235
 236    /* Possibly read back & compare against original data:
 237     */
 238    if (0)
 239    {
 240       struct pipe_transfer *t;
 241       uint32_t *ptr;
 242       t = pipe_get_transfer(ctx, samptex,
 243                             0, 0, /* level, layer */
 244                             PIPE_TRANSFER_READ,
 245                             0, 0, SIZE, SIZE); /* x, y, width, height */
 246
 247       ptr = ctx->transfer_map(ctx, t);
 248
 249       if (memcmp(ptr, tex2d, sizeof tex2d) != 0) {
 250          assert(0);
 251          exit(9);
 252       }
 253
 254       ctx->transfer_unmap(ctx, t);
 255
 256       ctx->transfer_destroy(ctx, t);
 257    }
 258
 259    memset(&sv_template, 0, sizeof sv_template);
 260    sv_template.format = samptex->format;
 261    sv_template.texture = samptex;
 262    sv_template.swizzle_r = 0;
 263    sv_template.swizzle_g = 1;
 264    sv_template.swizzle_b = 2;
 265    sv_template.swizzle_a = 3;
 266    sv = ctx->create_sampler_view(ctx, samptex, &sv_template);
 267    if (sv == NULL)
 268       exit(5);
 269
 270    ctx->set_fragment_sampler_views(ctx, 1, &sv);
 271
 272
 273    memset(&sampler_desc, 0, sizeof sampler_desc);
 274    sampler_desc.wrap_s = PIPE_TEX_WRAP_REPEAT;
 275    sampler_desc.wrap_t = PIPE_TEX_WRAP_REPEAT;
 276    sampler_desc.wrap_r = PIPE_TEX_WRAP_REPEAT;
 277    sampler_desc.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 278    sampler_desc.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 279    sampler_desc.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 280    sampler_desc.compare_mode = PIPE_TEX_COMPARE_NONE;
 281    sampler_desc.compare_func = 0;
 282    sampler_desc.normalized_coords = 1;
 283    sampler_desc.max_anisotropy = 0;
 284
 285    sampler = ctx->create_sampler_state(ctx, &sampler_desc);
 286    if (sampler == NULL)
 287       exit(6);
 288
 289    ctx->bind_fragment_sampler_states(ctx, 1, &sampler);
 290
 291 }
 292
 293 static void init( void )
 294 {
 295    struct pipe_framebuffer_state fb;
 296    struct pipe_resource templat;
 297    struct pipe_surface surf_tmpl;
 298    int i;
 299
 300    /* It's hard to say whether window or screen should be created
 301     * first.  Different environments would prefer one or the other.
 302     *
 303     * Also, no easy way of querying supported formats if the screen
 304     * cannot be created first.
 305     */
 306    for (i = 0;
 307         window == NULL && formats[i] != PIPE_FORMAT_NONE;
 308         i++) {
 309
 310       screen = graw_create_window_and_screen(0,0,300,300,
 311                                              formats[i],
 312                                              &window);
 313    }
 314
 315    ctx = screen->context_create(screen, NULL);
 316    if (ctx == NULL)
 317       exit(3);
 318
 319    templat.target = PIPE_TEXTURE_2D;
 320    templat.format = formats[i];
 321    templat.width0 = WIDTH;
 322    templat.height0 = HEIGHT;
 323    templat.depth0 = 1;
 324    templat.array_size = 1;
 325    templat.last_level = 0;
 326    templat.nr_samples = 1;
 327    templat.bind = (PIPE_BIND_RENDER_TARGET |
 328                    PIPE_BIND_DISPLAY_TARGET);
 329
 330    rttex = screen->resource_create(screen,
 331                                  &templat);
 332    if (rttex == NULL)
 333       exit(4);
 334
 335    surf_tmpl.format = templat.format;
 336    surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
 337    surf_tmpl.u.tex.level = 0;
 338    surf_tmpl.u.tex.first_layer = 0;
 339    surf_tmpl.u.tex.last_layer = 0;
 340    surf = ctx->create_surface(ctx, rttex, &surf_tmpl);
 341    if (surf == NULL)
 342       exit(5);
 343
 344    memset(&fb, 0, sizeof fb);
 345    fb.nr_cbufs = 1;
 346    fb.width = WIDTH;
 347    fb.height = HEIGHT;
 348    fb.cbufs[0] = surf;
 349
 350    ctx->set_framebuffer_state(ctx, &fb);
 351
 352    {
 353       struct pipe_blend_state blend;
 354       void *handle;
 355       memset(&blend, 0, sizeof blend);
 356       blend.rt[0].colormask = PIPE_MASK_RGBA;
 357       handle = ctx->create_blend_state(ctx, &blend);
 358       ctx->bind_blend_state(ctx, handle);
 359    }
 360
 361    {
 362       struct pipe_depth_stencil_alpha_state depthstencil;
 363       void *handle;
 364       memset(&depthstencil, 0, sizeof depthstencil);
 365       handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil);
 366       ctx->bind_depth_stencil_alpha_state(ctx, handle);
 367    }
 368
 369    {
 370       struct pipe_rasterizer_state rasterizer;
 371       void *handle;
 372       memset(&rasterizer, 0, sizeof rasterizer);
 373       rasterizer.cull_face = PIPE_FACE_NONE;
 374       rasterizer.gl_rasterization_rules = 1;
 375       handle = ctx->create_rasterizer_state(ctx, &rasterizer);
 376       ctx->bind_rasterizer_state(ctx, handle);
 377    }
 378
 379    set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000);
 380
 381    init_tex();
 382
 383    set_vertices();
 384    set_vertex_shader();
 385    set_fragment_shader();
 386 }
 387
 388 static void args(int argc, char *argv[])
 389 {
 390    int i;
 391
 392    for (i = 1; i < argc;) {
 393       if (graw_parse_args(&i, argc, argv)) {
 394          continue;
 395       }
 396       exit(1);
 397    }
 398 }
 399
 400 int main( int argc, char *argv[] )
 401 {
 402    args(argc, argv);
 403    init();
 404
 405    graw_set_display_func( draw );
 406    graw_main_loop();
 407    return 0;
 408 }