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 /* to get a hardware pipe driver */ 61 #include "pipe-loader/pipe_loader.h" 62 63 struct program 64 { 65 struct pipe_loader_device *dev; 66 struct pipe_screen *screen; 67 struct pipe_context *pipe; 68 struct cso_context *cso; 69 70 struct pipe_blend_state blend; 71 struct pipe_depth_stencil_alpha_state depthstencil; 72 struct pipe_rasterizer_state rasterizer; 73 struct pipe_sampler_state sampler; 74 struct pipe_viewport_state viewport; 75 struct pipe_framebuffer_state framebuffer; 76 struct pipe_vertex_element velem[2]; 77 78 void *vs; 79 void *fs; 80 81 union pipe_color_union clear_color; 82 83 struct pipe_resource *vbuf; 84 struct pipe_resource *target; 85 struct pipe_resource *tex; 86 struct pipe_sampler_view *view; 87 }; 88 89 static void init_prog(struct program *p) 90 { 91 struct pipe_surface surf_tmpl; 92 int ret; 93 94 /* find a hardware device */ 95 ret = pipe_loader_probe(&p->dev, 1); 96 assert(ret); 97 98 /* init a pipe screen */ 99 p->screen = pipe_loader_create_screen(p->dev, PIPE_SEARCH_DIR); 100 assert(p->screen); 101 102 /* create the pipe driver context and cso context */ 103 p->pipe = p->screen->context_create(p->screen, NULL); 104 p->cso = cso_create_context(p->pipe); 105 106 /* set clear color */ 107 p->clear_color.f[0] = 0.3; 108 p->clear_color.f[1] = 0.1; 109 p->clear_color.f[2] = 0.3; 110 p->clear_color.f[3] = 1.0; 111 112 /* vertex buffer */ 113 { 114 float vertices[4][2][4] = { 115 { 116 { 0.9f, 0.9f, 0.0f, 1.0f }, 117 { 1.0f, 1.0f, 0.0f, 1.0f } 118 }, 119 { 120 { -0.9f, 0.9f, 0.0f, 1.0f }, 121 { 0.0f, 1.0f, 0.0f, 1.0f } 122 }, 123 { 124 { -0.9f, -0.9f, 0.0f, 1.0f }, 125 { 0.0f, 0.0f, 1.0f, 1.0f } 126 }, 127 { 128 { 0.9f, -0.9f, 0.0f, 1.0f }, 129 { 1.0f, 0.0f, 1.0f, 1.0f } 130 } 131 }; 132 133 p->vbuf = pipe_buffer_create(p->screen, PIPE_BIND_VERTEX_BUFFER, 134 PIPE_USAGE_STATIC, sizeof(vertices)); 135 pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(vertices), vertices); 136 } 137 138 /* render target texture */ 139 { 140 struct pipe_resource tmplt; 141 memset(&tmplt, 0, sizeof(tmplt)); 142 tmplt.target = PIPE_TEXTURE_2D; 143 tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */ 144 tmplt.width0 = WIDTH; 145 tmplt.height0 = HEIGHT; 146 tmplt.depth0 = 1; 147 tmplt.array_size = 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_box box; 161 162 memset(&t_tmplt, 0, sizeof(t_tmplt)); 163 t_tmplt.target = PIPE_TEXTURE_2D; 164 t_tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */ 165 t_tmplt.width0 = 2; 166 t_tmplt.height0 = 2; 167 t_tmplt.depth0 = 1; 168 t_tmplt.array_size = 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(&box, 0, sizeof(box)); 175 box.width = 2; 176 box.height = 2; 177 178 t = p->pipe->get_transfer(p->pipe, p->tex, 0, PIPE_TRANSFER_WRITE, &box); 179 180 ptr = p->pipe->transfer_map(p->pipe, t); 181 ptr[0] = 0xffff0000; 182 ptr[1] = 0xff0000ff; 183 ptr[2] = 0xff00ff00; 184 ptr[3] = 0xffffff00; 185 p->pipe->transfer_unmap(p->pipe, t); 186 187 p->pipe->transfer_destroy(p->pipe, t); 188 189 u_sampler_view_default_template(&v_tmplt, p->tex, p->tex->format); 190 191 p->view = p->pipe->create_sampler_view(p->pipe, p->tex, &v_tmplt); 192 } 193 194 /* disabled blending/masking */ 195 memset(&p->blend, 0, sizeof(p->blend)); 196 p->blend.rt[0].colormask = PIPE_MASK_RGBA; 197 198 /* no-op depth/stencil/alpha */ 199 memset(&p->depthstencil, 0, sizeof(p->depthstencil)); 200 201 /* rasterizer */ 202 memset(&p->rasterizer, 0, sizeof(p->rasterizer)); 203 p->rasterizer.cull_face = PIPE_FACE_NONE; 204 p->rasterizer.gl_rasterization_rules = 1; 205 p->rasterizer.depth_clip = 1; 206 207 /* sampler */ 208 memset(&p->sampler, 0, sizeof(p->sampler)); 209 p->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 210 p->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 211 p->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 212 p->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; 213 p->sampler.min_img_filter = PIPE_TEX_MIPFILTER_LINEAR; 214 p->sampler.mag_img_filter = PIPE_TEX_MIPFILTER_LINEAR; 215 p->sampler.normalized_coords = 1; 216 217 surf_tmpl.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */ 218 surf_tmpl.usage = PIPE_BIND_RENDER_TARGET; 219 surf_tmpl.u.tex.level = 0; 220 surf_tmpl.u.tex.first_layer = 0; 221 surf_tmpl.u.tex.last_layer = 0; 222 /* drawing destination */ 223 memset(&p->framebuffer, 0, sizeof(p->framebuffer)); 224 p->framebuffer.width = WIDTH; 225 p->framebuffer.height = HEIGHT; 226 p->framebuffer.nr_cbufs = 1; 227 p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, p->target, &surf_tmpl); 228 229 /* viewport, depth isn't really needed */ 230 { 231 float x = 0; 232 float y = 0; 233 float z = FAR; 234 float half_width = (float)WIDTH / 2.0f; 235 float half_height = (float)HEIGHT / 2.0f; 236 float half_depth = ((float)FAR - (float)NEAR) / 2.0f; 237 float scale, bias; 238 239 if (FLIP) { 240 scale = -1.0f; 241 bias = (float)HEIGHT; 242 } else { 243 scale = 1.0f; 244 bias = 0.0f; 245 } 246 247 p->viewport.scale[0] = half_width; 248 p->viewport.scale[1] = half_height * scale; 249 p->viewport.scale[2] = half_depth; 250 p->viewport.scale[3] = 1.0f; 251 252 p->viewport.translate[0] = half_width + x; 253 p->viewport.translate[1] = (half_height + y) * scale + bias; 254 p->viewport.translate[2] = half_depth + z; 255 p->viewport.translate[3] = 0.0f; 256 } 257 258 /* vertex elements state */ 259 memset(p->velem, 0, sizeof(p->velem)); 260 p->velem[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */ 261 p->velem[0].instance_divisor = 0; 262 p->velem[0].vertex_buffer_index = 0; 263 p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 264 265 p->velem[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */ 266 p->velem[1].instance_divisor = 0; 267 p->velem[1].vertex_buffer_index = 0; 268 p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 269 270 /* vertex shader */ 271 { 272 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, 273 TGSI_SEMANTIC_GENERIC }; 274 const uint semantic_indexes[] = { 0, 0 }; 275 p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes); 276 } 277 278 /* fragment shader */ 279 p->fs = util_make_fragment_tex_shader(p->pipe, TGSI_TEXTURE_2D, TGSI_INTERPOLATE_LINEAR); 280 } 281 282 static void close_prog(struct program *p) 283 { 284 /* unset bound textures as well */ 285 cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 0, NULL); 286 287 /* unset all state */ 288 cso_release_all(p->cso); 289 290 p->pipe->delete_vs_state(p->pipe, p->vs); 291 p->pipe->delete_fs_state(p->pipe, p->fs); 292 293 pipe_surface_reference(&p->framebuffer.cbufs[0], NULL); 294 pipe_sampler_view_reference(&p->view, NULL); 295 pipe_resource_reference(&p->target, NULL); 296 pipe_resource_reference(&p->tex, NULL); 297 pipe_resource_reference(&p->vbuf, NULL); 298 299 cso_destroy_context(p->cso); 300 p->pipe->destroy(p->pipe); 301 p->screen->destroy(p->screen); 302 pipe_loader_release(&p->dev, 1); 303 304 FREE(p); 305 } 306 307 static void draw(struct program *p) 308 { 309 /* set the render target */ 310 cso_set_framebuffer(p->cso, &p->framebuffer); 311 312 /* clear the render target */ 313 p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, &p->clear_color, 0, 0); 314 315 /* set misc state we care about */ 316 cso_set_blend(p->cso, &p->blend); 317 cso_set_depth_stencil_alpha(p->cso, &p->depthstencil); 318 cso_set_rasterizer(p->cso, &p->rasterizer); 319 cso_set_viewport(p->cso, &p->viewport); 320 321 /* sampler */ 322 cso_single_sampler(p->cso, 0, &p->sampler); 323 cso_single_sampler_done(p->cso); 324 325 /* texture sampler view */ 326 cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 1, &p->view); 327 328 /* shaders */ 329 cso_set_fragment_shader_handle(p->cso, p->fs); 330 cso_set_vertex_shader_handle(p->cso, p->vs); 331 332 /* vertex element data */ 333 cso_set_vertex_elements(p->cso, 2, p->velem); 334 335 util_draw_vertex_buffer(p->pipe, p->cso, 336 p->vbuf, 0, 337 PIPE_PRIM_QUADS, 338 4, /* verts */ 339 2); /* attribs/vert */ 340 341 p->pipe->flush(p->pipe, NULL); 342 343 debug_dump_surface_bmp(p->pipe, "result.bmp", p->framebuffer.cbufs[0]); 344 } 345 346 int main(int argc, char** argv) 347 { 348 struct program *p = CALLOC_STRUCT(program); 349 350 init_prog(p); 351 draw(p); 352 close_prog(p); 353 354 return 0; 355 } 356
