1 /* Test gallium occlusion queries. 2 */ 3 4 #include <stdio.h> 5 6 #include "graw_util.h" 7 8 9 static int width = 300; 10 static int height = 300; 11 12 /* expected results of occlusion test (depndsd on window size) */ 13 static int expected1 = (int) ((300 * 0.9) * (300 * 0.9)); 14 static int expected2 = 420; 15 16 17 static struct graw_info info; 18 19 struct vertex { 20 float position[4]; 21 float color[4]; 22 }; 23 24 #define z0 0.2 25 #define z1 0.6 26 27 static struct vertex obj1_vertices[4] = 28 { 29 { 30 {-0.9, -0.9, z0, 1.0 }, 31 { 1, 0, 0, 1 } 32 }, 33 34 { 35 { 0.9, -0.9, z0, 1.0 }, 36 { 1, 0, 0, 1 } 37 }, 38 39 { 40 { 0.9, 0.9, z0, 1.0 }, 41 { 1, 0, 0, 1 } 42 }, 43 44 { 45 {-0.9, 0.9, z0, 1.0 }, 46 { 1, 0, 0, 1 } 47 } 48 }; 49 50 static struct vertex obj2_vertices[4] = 51 { 52 { 53 { -0.2, -0.2, z1, 1.0 }, 54 { 0, 0, 1, 1 } 55 }, 56 57 { 58 { 0.95, -0.2, z1, 1.0 }, 59 { 0, 0, 1, 1 } 60 }, 61 62 { 63 { 0.95, 0.2, z1, 1.0 }, 64 { 0, 0, 1, 1 } 65 }, 66 67 { 68 { -0.2, 0.2, z1, 1.0 }, 69 { 0, 0, 1, 1 } 70 }, 71 }; 72 73 #define NUM_VERTS 4 74 75 76 77 static void 78 set_vertices(struct vertex *vertices, unsigned bytes) 79 { 80 struct pipe_vertex_element ve[2]; 81 struct pipe_vertex_buffer vbuf; 82 void *handle; 83 84 memset(ve, 0, sizeof ve); 85 86 ve[0].src_offset = Offset(struct vertex, position); 87 ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 88 ve[1].src_offset = Offset(struct vertex, color); 89 ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 90 91 handle = info.ctx->create_vertex_elements_state(info.ctx, 2, ve); 92 info.ctx->bind_vertex_elements_state(info.ctx, handle); 93 94 95 vbuf.stride = sizeof(struct vertex); 96 vbuf.buffer_offset = 0; 97 vbuf.buffer = pipe_buffer_create_with_data(info.ctx, 98 PIPE_BIND_VERTEX_BUFFER, 99 PIPE_USAGE_STATIC, 100 bytes, 101 vertices); 102 103 info.ctx->set_vertex_buffers(info.ctx, 1, &vbuf); 104 } 105 106 107 static void 108 set_vertex_shader(struct graw_info *info) 109 { 110 void *handle; 111 const char *text = 112 "VERT\n" 113 "DCL IN[0]\n" 114 "DCL IN[1]\n" 115 "DCL OUT[0], POSITION\n" 116 "DCL OUT[1], GENERIC[0]\n" 117 " 0: MOV OUT[0], IN[0]\n" 118 " 1: MOV OUT[1], IN[1]\n" 119 " 2: END\n"; 120 121 handle = graw_parse_vertex_shader(info->ctx, text); 122 if (!handle) { 123 debug_printf("Failed to parse vertex shader\n"); 124 return; 125 } 126 info->ctx->bind_vs_state(info->ctx, handle); 127 } 128 129 130 static void 131 set_fragment_shader(struct graw_info *info) 132 { 133 void *handle; 134 const char *text = 135 "FRAG\n" 136 "DCL IN[0], GENERIC, LINEAR\n" 137 "DCL OUT[0], COLOR\n" 138 " 0: MOV OUT[0], IN[0]\n" 139 " 1: END\n"; 140 141 handle = graw_parse_fragment_shader(info->ctx, text); 142 if (!handle) { 143 debug_printf("Failed to parse fragment shader\n"); 144 return; 145 } 146 info->ctx->bind_fs_state(info->ctx, handle); 147 } 148 149 150 static void 151 draw(void) 152 { 153 int expected1_min = (int) (expected1 * 0.95); 154 int expected1_max = (int) (expected1 * 1.05); 155 int expected2_min = (int) (expected2 * 0.95); 156 int expected2_max = (int) (expected2 * 1.05); 157 158 union pipe_color_union clear_color; 159 160 struct pipe_query *q1, *q2; 161 uint64_t res1, res2; 162 163 clear_color.f[0] = 0.25; 164 clear_color.f[1] = 0.25; 165 clear_color.f[2] = 0.25; 166 clear_color.f[3] = 1.00; 167 168 info.ctx->clear(info.ctx, 169 PIPE_CLEAR_COLOR | PIPE_CLEAR_DEPTHSTENCIL, 170 &clear_color, 1.0, 0); 171 172 q1 = info.ctx->create_query(info.ctx, PIPE_QUERY_OCCLUSION_COUNTER); 173 q2 = info.ctx->create_query(info.ctx, PIPE_QUERY_OCCLUSION_COUNTER); 174 175 /* draw first, large object */ 176 set_vertices(obj1_vertices, sizeof(obj1_vertices)); 177 info.ctx->begin_query(info.ctx, q1); 178 util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, NUM_VERTS); 179 info.ctx->end_query(info.ctx, q1); 180 181 /* draw second, small object behind first object */ 182 set_vertices(obj2_vertices, sizeof(obj2_vertices)); 183 info.ctx->begin_query(info.ctx, q2); 184 util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, NUM_VERTS); 185 info.ctx->end_query(info.ctx, q2); 186 187 info.ctx->get_query_result(info.ctx, q1, TRUE, &res1); 188 info.ctx->get_query_result(info.ctx, q2, TRUE, &res2); 189 190 printf("result1 = %lu result2 = %lu\n", res1, res2); 191 if (res1 < expected1_min || res1 > expected1_max) 192 printf(" Failure: result1 should be near %d\n", expected1); 193 if (res2 < expected2_min || res2 > expected2_max) 194 printf(" Failure: result2 should be near %d\n", expected2); 195 196 info.ctx->flush(info.ctx, NULL); 197 198 graw_util_flush_front(&info); 199 200 info.ctx->destroy_query(info.ctx, q1); 201 info.ctx->destroy_query(info.ctx, q2); 202 } 203 204 205 #if 0 206 static void 207 resize(int w, int h) 208 { 209 width = w; 210 height = h; 211 212 graw_util_viewport(&info, 0, 0, width, height, 30, 1000); 213 } 214 #endif 215 216 217 static void 218 init(void) 219 { 220 if (!graw_util_create_window(&info, width, height, 1, TRUE)) 221 exit(1); 222 223 graw_util_default_state(&info, TRUE); 224 225 graw_util_viewport(&info, 0, 0, width, height, -1.0, 1.0); 226 227 set_vertex_shader(&info); 228 set_fragment_shader(&info); 229 } 230 231 232 int 233 main(int argc, char *argv[]) 234 { 235 init(); 236 237 printf("The red quad should mostly occlude the blue quad.\n"); 238 239 graw_set_display_func(draw); 240 /*graw_set_reshape_func(resize);*/ 241 graw_main_loop(); 242 return 0; 243 } 244
