1 /* 2 * Test draw instancing. 3 */ 4 5 #include <stdio.h> 6 #include <string.h> 7 8 #include "state_tracker/graw.h" 9 #include "pipe/p_screen.h" 10 #include "pipe/p_context.h" 11 #include "pipe/p_state.h" 12 #include "pipe/p_defines.h" 13 14 #include "util/u_memory.h" /* Offset() */ 15 #include "util/u_draw_quad.h" 16 #include "util/u_inlines.h" 17 18 19 enum pipe_format formats[] = { 20 PIPE_FORMAT_RGBA8888_UNORM, 21 PIPE_FORMAT_BGRA8888_UNORM, 22 PIPE_FORMAT_NONE 23 }; 24 25 static const int WIDTH = 300; 26 static const int HEIGHT = 300; 27 28 static struct pipe_screen *screen = NULL; 29 static struct pipe_context *ctx = NULL; 30 static struct pipe_surface *surf = NULL; 31 static struct pipe_resource *tex = NULL; 32 static void *window = NULL; 33 34 struct vertex { 35 float position[4]; 36 float color[4]; 37 }; 38 39 40 static int draw_elements = 0; 41 42 43 /** 44 * Vertex data. 45 * Each vertex has three attributes: position, color and translation. 46 * The translation attribute is a per-instance attribute. See 47 * "instance_divisor" below. 48 */ 49 static struct vertex vertices[4] = 50 { 51 { 52 { 0.0f, -0.3f, 0.0f, 1.0f }, /* pos */ 53 { 1.0f, 0.0f, 0.0f, 1.0f } /* color */ 54 }, 55 { 56 { -0.2f, 0.3f, 0.0f, 1.0f }, 57 { 0.0f, 1.0f, 0.0f, 1.0f } 58 }, 59 { 60 { 0.2f, 0.3f, 0.0f, 1.0f }, 61 { 0.0f, 0.0f, 1.0f, 1.0f } 62 } 63 }; 64 65 66 #define NUM_INST 5 67 68 static float inst_data[NUM_INST][4] = 69 { 70 { -0.50f, 0.4f, 0.0f, 0.0f }, 71 { -0.25f, 0.1f, 0.0f, 0.0f }, 72 { 0.00f, 0.2f, 0.0f, 0.0f }, 73 { 0.25f, 0.1f, 0.0f, 0.0f }, 74 { 0.50f, 0.3f, 0.0f, 0.0f } 75 }; 76 77 78 static ushort indices[3] = { 0, 2, 1 }; 79 80 81 static void set_viewport( float x, float y, 82 float width, float height, 83 float zNear, float zFar) 84 { 85 float z = zFar; 86 float half_width = (float)width / 2.0f; 87 float half_height = (float)height / 2.0f; 88 float half_depth = ((float)zFar - (float)zNear) / 2.0f; 89 struct pipe_viewport_state vp; 90 91 vp.scale[0] = half_width; 92 vp.scale[1] = half_height; 93 vp.scale[2] = half_depth; 94 95 vp.translate[0] = half_width + x; 96 vp.translate[1] = half_height + y; 97 vp.translate[2] = half_depth + z; 98 99 ctx->set_viewport_states( ctx, 0, 1, &vp ); 100 } 101 102 103 static void set_vertices( void ) 104 { 105 struct pipe_vertex_element ve[3]; 106 struct pipe_vertex_buffer vbuf[2]; 107 struct pipe_index_buffer ibuf; 108 void *handle; 109 110 memset(ve, 0, sizeof ve); 111 112 /* pos */ 113 ve[0].src_offset = Offset(struct vertex, position); 114 ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 115 ve[0].vertex_buffer_index = 0; 116 117 /* color */ 118 ve[1].src_offset = Offset(struct vertex, color); 119 ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 120 ve[1].vertex_buffer_index = 0; 121 122 /* per-instance info */ 123 ve[2].src_offset = 0; 124 ve[2].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 125 ve[2].vertex_buffer_index = 1; 126 ve[2].instance_divisor = 1; 127 128 handle = ctx->create_vertex_elements_state(ctx, 3, ve); 129 ctx->bind_vertex_elements_state(ctx, handle); 130 131 memset(&vbuf, 0, sizeof vbuf); 132 133 /* vertex data */ 134 vbuf[0].stride = sizeof( struct vertex ); 135 vbuf[0].buffer_offset = 0; 136 vbuf[0].buffer = pipe_buffer_create_with_data(ctx, 137 PIPE_BIND_VERTEX_BUFFER, 138 PIPE_USAGE_DEFAULT, 139 sizeof(vertices), 140 vertices); 141 142 /* instance data */ 143 vbuf[1].stride = sizeof( inst_data[0] ); 144 vbuf[1].buffer_offset = 0; 145 vbuf[1].buffer = pipe_buffer_create_with_data(ctx, 146 PIPE_BIND_VERTEX_BUFFER, 147 PIPE_USAGE_DEFAULT, 148 sizeof(inst_data), 149 inst_data); 150 151 ctx->set_vertex_buffers(ctx, 0, 2, vbuf); 152 153 /* index data */ 154 ibuf.buffer = pipe_buffer_create_with_data(ctx, 155 PIPE_BIND_INDEX_BUFFER, 156 PIPE_USAGE_DEFAULT, 157 sizeof(indices), 158 indices); 159 ibuf.offset = 0; 160 ibuf.index_size = 2; 161 162 ctx->set_index_buffer(ctx, &ibuf); 163 164 } 165 166 static void set_vertex_shader( void ) 167 { 168 void *handle; 169 const char *text = 170 "VERT\n" 171 "DCL IN[0]\n" 172 "DCL IN[1]\n" 173 "DCL IN[2]\n" 174 "DCL OUT[0], POSITION\n" 175 "DCL OUT[1], COLOR\n" 176 " 0: MOV OUT[1], IN[1]\n" 177 " 1: ADD OUT[0], IN[0], IN[2]\n" /* add instance pos to vertex pos */ 178 " 2: END\n"; 179 180 handle = graw_parse_vertex_shader(ctx, text); 181 ctx->bind_vs_state(ctx, handle); 182 } 183 184 static void set_fragment_shader( void ) 185 { 186 void *handle; 187 const char *text = 188 "FRAG\n" 189 "DCL IN[0], COLOR, LINEAR\n" 190 "DCL OUT[0], COLOR\n" 191 " 0: MOV OUT[0], IN[0]\n" 192 " 1: END\n"; 193 194 handle = graw_parse_fragment_shader(ctx, text); 195 ctx->bind_fs_state(ctx, handle); 196 } 197 198 199 static void draw( void ) 200 { 201 union pipe_color_union clear_color = { {1,0,1,1} }; 202 struct pipe_draw_info info; 203 204 ctx->clear(ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0); 205 206 util_draw_init_info(&info); 207 info.indexed = (draw_elements != 0); 208 info.mode = PIPE_PRIM_TRIANGLES; 209 info.start = 0; 210 info.count = 3; 211 /* draw NUM_INST triangles */ 212 info.instance_count = NUM_INST; 213 214 ctx->draw_vbo(ctx, &info); 215 216 ctx->flush(ctx, NULL, 0); 217 218 graw_save_surface_to_file(ctx, surf, NULL); 219 220 screen->flush_frontbuffer(screen, tex, 0, 0, window, NULL); 221 } 222 223 224 static void init( void ) 225 { 226 struct pipe_framebuffer_state fb; 227 struct pipe_resource templat; 228 struct pipe_surface surf_tmpl; 229 int i; 230 231 /* It's hard to say whether window or screen should be created 232 * first. Different environments would prefer one or the other. 233 * 234 * Also, no easy way of querying supported formats if the screen 235 * cannot be created first. 236 */ 237 for (i = 0; formats[i] != PIPE_FORMAT_NONE; i++) { 238 screen = graw_create_window_and_screen(0, 0, 300, 300, 239 formats[i], 240 &window); 241 if (window && screen) 242 break; 243 } 244 if (!screen || !window) { 245 fprintf(stderr, "Unable to create window\n"); 246 exit(1); 247 } 248 249 ctx = screen->context_create(screen, NULL, 0); 250 if (ctx == NULL) 251 exit(3); 252 253 memset(&templat, 0, sizeof(templat)); 254 templat.target = PIPE_TEXTURE_2D; 255 templat.format = formats[i]; 256 templat.width0 = WIDTH; 257 templat.height0 = HEIGHT; 258 templat.depth0 = 1; 259 templat.array_size = 1; 260 templat.last_level = 0; 261 templat.nr_samples = 1; 262 templat.bind = (PIPE_BIND_RENDER_TARGET | 263 PIPE_BIND_DISPLAY_TARGET); 264 265 tex = screen->resource_create(screen, 266 &templat); 267 if (tex == NULL) 268 exit(4); 269 270 surf_tmpl.format = templat.format; 271 surf_tmpl.u.tex.level = 0; 272 surf_tmpl.u.tex.first_layer = 0; 273 surf_tmpl.u.tex.last_layer = 0; 274 surf = ctx->create_surface(ctx, tex, &surf_tmpl); 275 if (surf == NULL) 276 exit(5); 277 278 memset(&fb, 0, sizeof fb); 279 fb.nr_cbufs = 1; 280 fb.width = WIDTH; 281 fb.height = HEIGHT; 282 fb.cbufs[0] = surf; 283 284 ctx->set_framebuffer_state(ctx, &fb); 285 286 { 287 struct pipe_blend_state blend; 288 void *handle; 289 memset(&blend, 0, sizeof blend); 290 blend.rt[0].colormask = PIPE_MASK_RGBA; 291 handle = ctx->create_blend_state(ctx, &blend); 292 ctx->bind_blend_state(ctx, handle); 293 } 294 295 { 296 struct pipe_depth_stencil_alpha_state depthstencil; 297 void *handle; 298 memset(&depthstencil, 0, sizeof depthstencil); 299 handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil); 300 ctx->bind_depth_stencil_alpha_state(ctx, handle); 301 } 302 303 { 304 struct pipe_rasterizer_state rasterizer; 305 void *handle; 306 memset(&rasterizer, 0, sizeof rasterizer); 307 rasterizer.cull_face = PIPE_FACE_NONE; 308 rasterizer.half_pixel_center = 1; 309 rasterizer.bottom_edge_rule = 1; 310 rasterizer.depth_clip = 1; 311 handle = ctx->create_rasterizer_state(ctx, &rasterizer); 312 ctx->bind_rasterizer_state(ctx, handle); 313 } 314 315 set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000); 316 set_vertices(); 317 set_vertex_shader(); 318 set_fragment_shader(); 319 } 320 321 322 static void options(int argc, char *argv[]) 323 { 324 int i; 325 326 for (i = 1; i < argc;) { 327 if (graw_parse_args(&i, argc, argv)) { 328 continue; 329 } 330 if (strcmp(argv[i], "-e") == 0) { 331 draw_elements = 1; 332 i++; 333 } 334 else { 335 i++; 336 } 337 } 338 if (draw_elements) 339 printf("Using pipe_context::draw_elements_instanced()\n"); 340 else 341 printf("Using pipe_context::draw_arrays_instanced()\n"); 342 } 343 344 345 int main( int argc, char *argv[] ) 346 { 347 options(argc, argv); 348 349 init(); 350 351 graw_set_display_func( draw ); 352 graw_main_loop(); 353 return 0; 354 } 355