src/gallium/tests/trivial/quad-tex.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2010 Jakob Bornecrantz
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  **************************************************************************/
  25
  26
  27 #define USE_TRACE 0
  28 #define WIDTH 300
  29 #define HEIGHT 300
  30 #define NEAR 30
  31 #define FAR 1000
  32 #define FLIP 0
  33
  34 /* pipe_*_state structs */
  35 #include "pipe/p_state.h"
  36 /* pipe_context */
  37 #include "pipe/p_context.h"
  38 /* pipe_screen */
  39 #include "pipe/p_screen.h"
  40 /* PIPE_* */
  41 #include "pipe/p_defines.h"
  42 /* TGSI_SEMANTIC_{POSITION|GENERIC} */
  43 #include "pipe/p_shader_tokens.h"
  44 /* pipe_buffer_* helpers */
  45 #include "util/u_inlines.h"
  46
  47 /* constant state object helper */
  48 #include "cso_cache/cso_context.h"
  49
  50 /* u_sampler_view_default_template */
  51 #include "util/u_sampler.h"
  52 /* debug_dump_surface_bmp */
  53 #include "util/u_debug.h"
  54 /* util_draw_vertex_buffer helper */
  55 #include "util/u_draw_quad.h"
  56 /* FREE & CALLOC_STRUCT */
  57 #include "util/u_memory.h"
  58 /* util_make_[fragment|vertex]_passthrough_shader */
  59 #include "util/u_simple_shaders.h"
  60
  61 /* sw_screen_create: to get a software pipe driver */
  62 #include "target-helpers/inline_sw_helper.h"
  63 /* debug_screen_wrap: to wrap with debug pipe drivers */
  64 #include "target-helpers/inline_debug_helper.h"
  65 /* null software winsys */
  66 #include "sw/null/null_sw_winsys.h"
  67
  68 struct program
  69 {
  70         struct pipe_screen *screen;
  71         struct pipe_context *pipe;
  72         struct cso_context *cso;
  73
  74         struct pipe_blend_state blend;
  75         struct pipe_depth_stencil_alpha_state depthstencil;
  76         struct pipe_rasterizer_state rasterizer;
  77         struct pipe_sampler_state sampler;
  78         struct pipe_viewport_state viewport;
  79         struct pipe_framebuffer_state framebuffer;
  80         struct pipe_vertex_element velem[2];
  81
  82         void *vs;
  83         void *fs;
  84
  85         float clear_color[4];
  86
  87         struct pipe_resource *vbuf;
  88         struct pipe_resource *target;
  89         struct pipe_resource *tex;
  90         struct pipe_sampler_view *view;
  91 };
  92
  93 static void init_prog(struct program *p)
  94 {
  95         struct pipe_surface surf_tmpl;
  96         /* create the software rasterizer */
  97         p->screen = sw_screen_create(null_sw_create());
  98         /* wrap the screen with any debugger */
  99         p->screen = debug_screen_wrap(p->screen);
 100
 101         /* create the pipe driver context and cso context */
 102         p->pipe = p->screen->context_create(p->screen, NULL);
 103         p->cso = cso_create_context(p->pipe);
 104
 105         /* set clear color */
 106         p->clear_color[0] = 0.3;
 107         p->clear_color[1] = 0.1;
 108         p->clear_color[2] = 0.3;
 109         p->clear_color[3] = 1.0;
 110
 111         /* vertex buffer */
 112         {
 113                 float vertices[4][2][4] = {
 114                         {
 115                                 { 0.9f, 0.9f, 0.0f, 1.0f },
 116                                 { 1.0f, 1.0f, 0.0f, 1.0f }
 117                         },
 118                         {
 119                                 { -0.9f, 0.9f, 0.0f, 1.0f },
 120                                 {  0.0f, 1.0f, 0.0f, 1.0f }
 121                         },
 122                         {
 123                                 { -0.9f, -0.9f, 0.0f, 1.0f },
 124                                 {  0.0f,  0.0f, 1.0f, 1.0f }
 125                         },
 126                         {
 127                                 { 0.9f, -0.9f, 0.0f, 1.0f },
 128                                 { 1.0f,  0.0f, 1.0f, 1.0f }
 129                         }
 130                 };
 131
 132                 p->vbuf = pipe_buffer_create(p->screen, PIPE_BIND_VERTEX_BUFFER,
 133                                              PIPE_USAGE_STATIC, sizeof(vertices));
 134                 pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(vertices), vertices);
 135         }
 136
 137         /* render target texture */
 138         {
 139                 struct pipe_resource tmplt;
 140                 memset(&tmplt, 0, sizeof(tmplt));
 141                 tmplt.target = PIPE_TEXTURE_2D;
 142                 tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
 143                 tmplt.width0 = WIDTH;
 144                 tmplt.height0 = HEIGHT;
 145                 tmplt.depth0 = 1;
 146                 tmplt.array_size = 1;
 147                 tmplt.last_level = 0;
 148                 tmplt.bind = PIPE_BIND_RENDER_TARGET;
 149
 150                 p->target = p->screen->resource_create(p->screen, &tmplt);
 151         }
 152
 153         /* sampler texture */
 154         {
 155                 uint32_t *ptr;
 156                 struct pipe_transfer *t;
 157                 struct pipe_resource t_tmplt;
 158                 struct pipe_sampler_view v_tmplt;
 159                 struct pipe_box box;
 160
 161                 memset(&t_tmplt, 0, sizeof(t_tmplt));
 162                 t_tmplt.target = PIPE_TEXTURE_2D;
 163                 t_tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
 164                 t_tmplt.width0 = 2;
 165                 t_tmplt.height0 = 2;
 166                 t_tmplt.depth0 = 1;
 167                 t_tmplt.array_size = 1;
 168                 t_tmplt.last_level = 0;
 169                 t_tmplt.bind = PIPE_BIND_RENDER_TARGET;
 170
 171                 p->tex = p->screen->resource_create(p->screen, &t_tmplt);
 172
 173                 memset(&box, 0, sizeof(box));
 174                 box.width = 2;
 175                 box.height = 2;
 176
 177                 t = p->pipe->get_transfer(p->pipe, p->tex, 0, PIPE_TRANSFER_WRITE, &box);
 178
 179                 ptr = p->pipe->transfer_map(p->pipe, t);
 180                 ptr[0] = 0xffff0000;
 181                 ptr[1] = 0xff0000ff;
 182                 ptr[2] = 0xff00ff00;
 183                 ptr[3] = 0xffffff00;
 184                 p->pipe->transfer_unmap(p->pipe, t);
 185
 186                 p->pipe->transfer_destroy(p->pipe, t);
 187
 188                 u_sampler_view_default_template(&v_tmplt, p->tex, p->tex->format);
 189
 190                 p->view = p->pipe->create_sampler_view(p->pipe, p->tex, &v_tmplt);
 191         }
 192
 193         /* disabled blending/masking */
 194         memset(&p->blend, 0, sizeof(p->blend));
 195         p->blend.rt[0].colormask = PIPE_MASK_RGBA;
 196
 197         /* no-op depth/stencil/alpha */
 198         memset(&p->depthstencil, 0, sizeof(p->depthstencil));
 199
 200         /* rasterizer */
 201         memset(&p->rasterizer, 0, sizeof(p->rasterizer));
 202         p->rasterizer.cull_face = PIPE_FACE_NONE;
 203         p->rasterizer.gl_rasterization_rules = 1;
 204
 205         /* sampler */
 206         memset(&p->sampler, 0, sizeof(p->sampler));
 207         p->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 208         p->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 209         p->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 210         p->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 211         p->sampler.min_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
 212         p->sampler.mag_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
 213         p->sampler.normalized_coords = 1;
 214
 215         surf_tmpl.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
 216         surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
 217         surf_tmpl.u.tex.level = 0;
 218         surf_tmpl.u.tex.first_layer = 0;
 219         surf_tmpl.u.tex.last_layer = 0;
 220         /* drawing destination */
 221         memset(&p->framebuffer, 0, sizeof(p->framebuffer));
 222         p->framebuffer.width = WIDTH;
 223         p->framebuffer.height = HEIGHT;
 224         p->framebuffer.nr_cbufs = 1;
 225         p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, p->target, &surf_tmpl);
 226
 227         /* viewport, depth isn't really needed */
 228         {
 229                 float x = 0;
 230                 float y = 0;
 231                 float z = FAR;
 232                 float half_width = (float)WIDTH / 2.0f;
 233                 float half_height = (float)HEIGHT / 2.0f;
 234                 float half_depth = ((float)FAR - (float)NEAR) / 2.0f;
 235                 float scale, bias;
 236
 237                 if (FLIP) {
 238                         scale = -1.0f;
 239                         bias = (float)HEIGHT;
 240                 } else {
 241                         scale = 1.0f;
 242                         bias = 0.0f;
 243                 }
 244
 245                 p->viewport.scale[0] = half_width;
 246                 p->viewport.scale[1] = half_height * scale;
 247                 p->viewport.scale[2] = half_depth;
 248                 p->viewport.scale[3] = 1.0f;
 249
 250                 p->viewport.translate[0] = half_width + x;
 251                 p->viewport.translate[1] = (half_height + y) * scale + bias;
 252                 p->viewport.translate[2] = half_depth + z;
 253                 p->viewport.translate[3] = 0.0f;
 254         }
 255
 256         /* vertex elements state */
 257         memset(p->velem, 0, sizeof(p->velem));
 258         p->velem[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */
 259         p->velem[0].instance_divisor = 0;
 260         p->velem[0].vertex_buffer_index = 0;
 261         p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 262
 263         p->velem[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */
 264         p->velem[1].instance_divisor = 0;
 265         p->velem[1].vertex_buffer_index = 0;
 266         p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 267
 268         /* vertex shader */
 269         {
 270                 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
 271                                                 TGSI_SEMANTIC_GENERIC };
 272                 const uint semantic_indexes[] = { 0, 0 };
 273                 p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes);
 274         }
 275
 276         /* fragment shader */
 277         p->fs = util_make_fragment_tex_shader(p->pipe, TGSI_TEXTURE_2D, TGSI_INTERPOLATE_LINEAR);
 278 }
 279
 280 static void close_prog(struct program *p)
 281 {
 282         /* unset bound textures as well */
 283         cso_set_fragment_sampler_views(p->cso, 0, NULL);
 284
 285         /* unset all state */
 286         cso_release_all(p->cso);
 287
 288         p->pipe->delete_vs_state(p->pipe, p->vs);
 289         p->pipe->delete_fs_state(p->pipe, p->fs);
 290
 291         pipe_surface_reference(&p->framebuffer.cbufs[0], NULL);
 292         pipe_sampler_view_reference(&p->view, NULL);
 293         pipe_resource_reference(&p->target, NULL);
 294         pipe_resource_reference(&p->tex, NULL);
 295         pipe_resource_reference(&p->vbuf, NULL);
 296
 297         cso_destroy_context(p->cso);
 298         p->pipe->destroy(p->pipe);
 299         p->screen->destroy(p->screen);
 300
 301         FREE(p);
 302 }
 303
 304 static void draw(struct program *p)
 305 {
 306         /* set the render target */
 307         cso_set_framebuffer(p->cso, &p->framebuffer);
 308
 309         /* clear the render target */
 310         p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, p->clear_color, 0, 0);
 311
 312         /* set misc state we care about */
 313         cso_set_blend(p->cso, &p->blend);
 314         cso_set_depth_stencil_alpha(p->cso, &p->depthstencil);
 315         cso_set_rasterizer(p->cso, &p->rasterizer);
 316         cso_set_viewport(p->cso, &p->viewport);
 317
 318         /* sampler */
 319         cso_single_sampler(p->cso, 0, &p->sampler);
 320         cso_single_sampler_done(p->cso);
 321
 322         /* texture sampler view */
 323         cso_set_fragment_sampler_views(p->cso, 1, &p->view);
 324
 325         /* shaders */
 326         cso_set_fragment_shader_handle(p->cso, p->fs);
 327         cso_set_vertex_shader_handle(p->cso, p->vs);
 328
 329         /* vertex element data */
 330         cso_set_vertex_elements(p->cso, 2, p->velem);
 331
 332         util_draw_vertex_buffer(p->pipe, p->cso,
 333                                 p->vbuf, 0,
 334                                 PIPE_PRIM_QUADS,
 335                                 4,  /* verts */
 336                                 2); /* attribs/vert */
 337
 338         p->pipe->flush(p->pipe, NULL);
 339
 340         debug_dump_surface_bmp(p->pipe, "result.bmp", p->framebuffer.cbufs[0]);
 341 }
 342
 343 int main(int argc, char** argv)
 344 {
 345         struct program *p = CALLOC_STRUCT(program);
 346
 347         init_prog(p);
 348         draw(p);
 349         close_prog(p);
 350
 351         return 0;
 352 }