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 /* softpipe software driver */
  62 #include "softpipe/sp_public.h"
  63
  64 /* null software winsys */
  65 #include "sw/null/null_sw_winsys.h"
  66
  67 /* traceing support see src/gallium/drivers/trace/README for more info. */
  68 #if USE_TRACE
  69 #include "trace/tr_screen.h"
  70 #include "trace/tr_context.h"
  71 #endif
  72
  73 struct program
  74 {
  75         struct pipe_screen *screen;
  76         struct pipe_context *pipe;
  77         struct cso_context *cso;
  78
  79         struct pipe_blend_state blend;
  80         struct pipe_depth_stencil_alpha_state depthstencil;
  81         struct pipe_rasterizer_state rasterizer;
  82         struct pipe_sampler_state sampler;
  83         struct pipe_viewport_state viewport;
  84         struct pipe_framebuffer_state framebuffer;
  85         struct pipe_vertex_element velem[2];
  86
  87         void *vs;
  88         void *fs;
  89
  90         float clear_color[4];
  91
  92         struct pipe_resource *vbuf;
  93         struct pipe_resource *target;
  94         struct pipe_resource *tex;
  95         struct pipe_sampler_view *view;
  96 };
  97
  98 static void init_prog(struct program *p)
  99 {
 100         /* create the software rasterizer */
 101         p->screen = softpipe_create_screen(null_sw_create());
 102 #if USE_TRACE
 103         p->screen = trace_screen_create(p->screen);
 104 #endif
 105         p->pipe = p->screen->context_create(p->screen, NULL);
 106         p->cso = cso_create_context(p->pipe);
 107
 108         /* set clear color */
 109         p->clear_color[0] = 0.3;
 110         p->clear_color[1] = 0.1;
 111         p->clear_color[2] = 0.3;
 112         p->clear_color[3] = 1.0;
 113
 114         /* vertex buffer */
 115         {
 116                 float vertices[4][2][4] = {
 117                         {
 118                                 { 0.9f, 0.9f, 0.0f, 1.0f },
 119                                 { 1.0f, 1.0f, 0.0f, 1.0f }
 120                         },
 121                         {
 122                                 { -0.9f, 0.9f, 0.0f, 1.0f },
 123                                 {  0.0f, 1.0f, 0.0f, 1.0f }
 124                         },
 125                         {
 126                                 { -0.9f, -0.9f, 0.0f, 1.0f },
 127                                 {  0.0f,  0.0f, 1.0f, 1.0f }
 128                         },
 129                         {
 130                                 { 0.9f, -0.9f, 0.0f, 1.0f },
 131                                 { 1.0f,  0.0f, 1.0f, 1.0f }
 132                         }
 133                 };
 134
 135                 p->vbuf = pipe_buffer_create(p->screen, PIPE_BIND_VERTEX_BUFFER, sizeof(vertices));
 136                 pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(vertices), vertices);
 137         }
 138
 139         /* render target texture */
 140         {
 141                 struct pipe_resource tmplt;
 142                 memset(&tmplt, 0, sizeof(tmplt));
 143                 tmplt.target = PIPE_TEXTURE_2D;
 144                 tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
 145                 tmplt.width0 = WIDTH;
 146                 tmplt.height0 = HEIGHT;
 147                 tmplt.depth0 = 1;
 148                 tmplt.last_level = 0;
 149                 tmplt.bind = PIPE_BIND_RENDER_TARGET;
 150
 151                 p->target = p->screen->resource_create(p->screen, &tmplt);
 152         }
 153
 154         /* sampler texture */
 155         {
 156                 uint32_t *ptr;
 157                 struct pipe_transfer *t;
 158                 struct pipe_resource t_tmplt;
 159                 struct pipe_sampler_view v_tmplt;
 160                 struct pipe_subresource sub;
 161                 struct pipe_box box;
 162
 163                 memset(&t_tmplt, 0, sizeof(t_tmplt));
 164                 t_tmplt.target = PIPE_TEXTURE_2D;
 165                 t_tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
 166                 t_tmplt.width0 = 2;
 167                 t_tmplt.height0 = 2;
 168                 t_tmplt.depth0 = 1;
 169                 t_tmplt.last_level = 0;
 170                 t_tmplt.bind = PIPE_BIND_RENDER_TARGET;
 171
 172                 p->tex = p->screen->resource_create(p->screen, &t_tmplt);
 173
 174                 memset(&sub, 0, sizeof(sub));
 175                 memset(&box, 0, sizeof(box));
 176                 box.width = 2;
 177                 box.height = 2;
 178
 179                 t = p->pipe->get_transfer(p->pipe, p->tex, sub, PIPE_TRANSFER_WRITE, &box);
 180
 181                 ptr = p->pipe->transfer_map(p->pipe, t);
 182                 ptr[0] = 0xffff0000;
 183                 ptr[1] = 0xff0000ff;
 184                 ptr[2] = 0xff00ff00;
 185                 ptr[3] = 0xffffff00;
 186                 p->pipe->transfer_unmap(p->pipe, t);
 187
 188                 p->pipe->transfer_destroy(p->pipe, t);
 189
 190                 u_sampler_view_default_template(&v_tmplt, p->tex, p->tex->format);
 191
 192                 p->view = p->pipe->create_sampler_view(p->pipe, p->tex, &v_tmplt);
 193         }
 194
 195         /* disabled blending/masking */
 196         memset(&p->blend, 0, sizeof(p->blend));
 197         p->blend.rt[0].colormask = PIPE_MASK_RGBA;
 198
 199         /* no-op depth/stencil/alpha */
 200         memset(&p->depthstencil, 0, sizeof(p->depthstencil));
 201
 202         /* rasterizer */
 203         memset(&p->rasterizer, 0, sizeof(p->rasterizer));
 204         p->rasterizer.front_winding = PIPE_WINDING_CW;
 205         p->rasterizer.cull_mode = PIPE_WINDING_NONE;
 206         p->rasterizer.gl_rasterization_rules = 1;
 207
 208         /* sampler */
 209         memset(&p->sampler, 0, sizeof(p->sampler));
 210         p->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 211         p->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 212         p->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 213         p->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 214         p->sampler.min_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
 215         p->sampler.mag_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
 216         p->sampler.normalized_coords = 1;
 217
 218         /* drawing destination */
 219         memset(&p->framebuffer, 0, sizeof(p->framebuffer));
 220         p->framebuffer.width = WIDTH;
 221         p->framebuffer.height = HEIGHT;
 222         p->framebuffer.nr_cbufs = 1;
 223         p->framebuffer.cbufs[0] = p->screen->get_tex_surface(p->screen, p->target, 0, 0, 0, PIPE_BIND_RENDER_TARGET);
 224
 225         /* viewport, depth isn't really needed */
 226         {
 227                 float x = 0;
 228                 float y = 0;
 229                 float z = FAR;
 230                 float half_width = (float)WIDTH / 2.0f;
 231                 float half_height = (float)HEIGHT / 2.0f;
 232                 float half_depth = ((float)FAR - (float)NEAR) / 2.0f;
 233                 float scale, bias;
 234
 235                 if (FLIP) {
 236                         scale = -1.0f;
 237                         bias = (float)HEIGHT;
 238                 } else {
 239                         scale = 1.0f;
 240                         bias = 0.0f;
 241                 }
 242
 243                 p->viewport.scale[0] = half_width;
 244                 p->viewport.scale[1] = half_height * scale;
 245                 p->viewport.scale[2] = half_depth;
 246                 p->viewport.scale[3] = 1.0f;
 247
 248                 p->viewport.translate[0] = half_width + x;
 249                 p->viewport.translate[1] = (half_height + y) * scale + bias;
 250                 p->viewport.translate[2] = half_depth + z;
 251                 p->viewport.translate[3] = 0.0f;
 252         }
 253
 254         /* vertex elements state */
 255         memset(p->velem, 0, sizeof(p->velem));
 256         p->velem[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */
 257         p->velem[0].instance_divisor = 0;
 258         p->velem[0].vertex_buffer_index = 0;
 259         p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 260
 261         p->velem[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */
 262         p->velem[1].instance_divisor = 0;
 263         p->velem[1].vertex_buffer_index = 0;
 264         p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 265
 266         /* vertex shader */
 267         {
 268                 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
 269                                                 TGSI_SEMANTIC_GENERIC };
 270                 const uint semantic_indexes[] = { 0, 0 };
 271                 p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes);
 272         }
 273
 274         /* fragment shader */
 275         p->fs = util_make_fragment_tex_shader(p->pipe, TGSI_TEXTURE_2D);
 276 }
 277
 278 static void close_prog(struct program *p)
 279 {
 280         /* unset bound textures as well */
 281         cso_set_fragment_sampler_views(p->cso, 0, NULL);
 282
 283         /* unset all state */
 284         cso_release_all(p->cso);
 285
 286         p->pipe->delete_vs_state(p->pipe, p->vs);
 287         p->pipe->delete_fs_state(p->pipe, p->fs);
 288
 289         pipe_surface_reference(&p->framebuffer.cbufs[0], NULL);
 290         pipe_sampler_view_reference(&p->view, NULL);
 291         pipe_resource_reference(&p->target, NULL);
 292         pipe_resource_reference(&p->tex, NULL);
 293         pipe_resource_reference(&p->vbuf, NULL);
 294
 295         cso_destroy_context(p->cso);
 296         p->pipe->destroy(p->pipe);
 297         p->screen->destroy(p->screen);
 298
 299         FREE(p);
 300 }
 301
 302 static void draw(struct program *p)
 303 {
 304         /* set the render target */
 305         cso_set_framebuffer(p->cso, &p->framebuffer);
 306
 307         /* clear the render target */
 308         p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, p->clear_color, 0, 0);
 309
 310         /* set misc state we care about */
 311         cso_set_blend(p->cso, &p->blend);
 312         cso_set_depth_stencil_alpha(p->cso, &p->depthstencil);
 313         cso_set_rasterizer(p->cso, &p->rasterizer);
 314         cso_set_viewport(p->cso, &p->viewport);
 315
 316         /* sampler */
 317         cso_single_sampler(p->cso, 0, &p->sampler);
 318         cso_single_sampler_done(p->cso);
 319
 320         /* texture sampler view */
 321         cso_set_fragment_sampler_views(p->cso, 1, &p->view);
 322
 323         /* shaders */
 324         cso_set_fragment_shader_handle(p->cso, p->fs);
 325         cso_set_vertex_shader_handle(p->cso, p->vs);
 326
 327         /* vertex element data */
 328         cso_set_vertex_elements(p->cso, 2, p->velem);
 329
 330         util_draw_vertex_buffer(p->pipe,
 331                                 p->vbuf, 0,
 332                                 PIPE_PRIM_QUADS,
 333                                 4,  /* verts */
 334                                 2); /* attribs/vert */
 335
 336         p->pipe->flush(p->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 337
 338         debug_dump_surface_bmp(p->pipe, "result.bmp", p->framebuffer.cbufs[0]);
 339 }
 340
 341 int main(int argc, char** argv)
 342 {
 343         struct program *p = CALLOC_STRUCT(program);
 344
 345         init_prog(p);
 346         draw(p);
 347         close_prog(p);
 348
 349         return 0;
 350 }