1 /************************************************************************** 2 * 3 * Copyright 2007 VMware, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 /* 29 * Authors: 30 * Keith Whitwell <keithw (at) vmware.com> 31 * Brian Paul 32 */ 33 34 #include "util/u_math.h" 35 #include "util/u_memory.h" 36 #include "pipe/p_shader_tokens.h" 37 38 #include "draw_private.h" 39 #include "draw_context.h" 40 #include "draw_vs.h" 41 42 #include "tgsi/tgsi_parse.h" 43 #include "tgsi/tgsi_scan.h" 44 #include "tgsi/tgsi_exec.h" 45 46 47 struct exec_vertex_shader { 48 struct draw_vertex_shader base; 49 struct tgsi_exec_machine *machine; 50 }; 51 52 static struct exec_vertex_shader *exec_vertex_shader( struct draw_vertex_shader *vs ) 53 { 54 return (struct exec_vertex_shader *)vs; 55 } 56 57 58 /* Not required for run_linear. 59 */ 60 static void 61 vs_exec_prepare( struct draw_vertex_shader *shader, 62 struct draw_context *draw ) 63 { 64 struct exec_vertex_shader *evs = exec_vertex_shader(shader); 65 66 debug_assert(!draw->llvm); 67 /* Specify the vertex program to interpret/execute. 68 * Avoid rebinding when possible. 69 */ 70 if (evs->machine->Tokens != shader->state.tokens) { 71 tgsi_exec_machine_bind_shader(evs->machine, 72 shader->state.tokens, 73 draw->vs.tgsi.sampler, 74 draw->vs.tgsi.image, 75 draw->vs.tgsi.buffer); 76 } 77 } 78 79 80 81 82 /* Simplified vertex shader interface for the pt paths. Given the 83 * complexity of code-generating all the above operations together, 84 * it's time to try doing all the other stuff separately. 85 */ 86 static void 87 vs_exec_run_linear( struct draw_vertex_shader *shader, 88 const float (*input)[4], 89 float (*output)[4], 90 const void *constants[PIPE_MAX_CONSTANT_BUFFERS], 91 const unsigned const_size[PIPE_MAX_CONSTANT_BUFFERS], 92 unsigned count, 93 unsigned input_stride, 94 unsigned output_stride ) 95 { 96 struct exec_vertex_shader *evs = exec_vertex_shader(shader); 97 struct tgsi_exec_machine *machine = evs->machine; 98 unsigned int i, j; 99 unsigned slot; 100 boolean clamp_vertex_color = shader->draw->rasterizer->clamp_vertex_color; 101 102 debug_assert(!shader->draw->llvm); 103 tgsi_exec_set_constant_buffers(machine, PIPE_MAX_CONSTANT_BUFFERS, 104 constants, const_size); 105 106 if (shader->info.uses_instanceid) { 107 unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_INSTANCEID]; 108 assert(i < ARRAY_SIZE(machine->SystemValue)); 109 for (j = 0; j < TGSI_QUAD_SIZE; j++) 110 machine->SystemValue[i].xyzw[0].i[j] = shader->draw->instance_id; 111 } 112 113 for (i = 0; i < count; i += MAX_TGSI_VERTICES) { 114 unsigned int max_vertices = MIN2(MAX_TGSI_VERTICES, count - i); 115 116 /* Swizzle inputs. 117 */ 118 for (j = 0; j < max_vertices; j++) { 119 #if 0 120 debug_printf("%d) Input vert:\n", i + j); 121 for (slot = 0; slot < shader->info.num_inputs; slot++) { 122 debug_printf("\t%d: %f %f %f %f\n", slot, 123 input[slot][0], 124 input[slot][1], 125 input[slot][2], 126 input[slot][3]); 127 } 128 #endif 129 130 if (shader->info.uses_vertexid) { 131 unsigned vid = machine->SysSemanticToIndex[TGSI_SEMANTIC_VERTEXID]; 132 assert(vid < ARRAY_SIZE(machine->SystemValue)); 133 machine->SystemValue[vid].xyzw[0].i[j] = i + j; 134 /* XXX this should include base vertex. Where to get it??? */ 135 } 136 if (shader->info.uses_basevertex) { 137 unsigned vid = machine->SysSemanticToIndex[TGSI_SEMANTIC_BASEVERTEX]; 138 assert(vid < ARRAY_SIZE(machine->SystemValue)); 139 machine->SystemValue[vid].xyzw[0].i[j] = 0; 140 /* XXX Where to get it??? */ 141 } 142 if (shader->info.uses_vertexid_nobase) { 143 unsigned vid = machine->SysSemanticToIndex[TGSI_SEMANTIC_VERTEXID_NOBASE]; 144 assert(vid < ARRAY_SIZE(machine->SystemValue)); 145 machine->SystemValue[vid].xyzw[0].i[j] = i + j; 146 } 147 148 for (slot = 0; slot < shader->info.num_inputs; slot++) { 149 #if 0 150 assert(!util_is_inf_or_nan(input[slot][0])); 151 assert(!util_is_inf_or_nan(input[slot][1])); 152 assert(!util_is_inf_or_nan(input[slot][2])); 153 assert(!util_is_inf_or_nan(input[slot][3])); 154 #endif 155 machine->Inputs[slot].xyzw[0].f[j] = input[slot][0]; 156 machine->Inputs[slot].xyzw[1].f[j] = input[slot][1]; 157 machine->Inputs[slot].xyzw[2].f[j] = input[slot][2]; 158 machine->Inputs[slot].xyzw[3].f[j] = input[slot][3]; 159 } 160 161 input = (const float (*)[4])((const char *)input + input_stride); 162 } 163 164 machine->NonHelperMask = (1 << max_vertices) - 1; 165 /* run interpreter */ 166 tgsi_exec_machine_run( machine, 0 ); 167 168 /* Unswizzle all output results. 169 */ 170 for (j = 0; j < max_vertices; j++) { 171 for (slot = 0; slot < shader->info.num_outputs; slot++) { 172 unsigned name = shader->info.output_semantic_name[slot]; 173 if(clamp_vertex_color && 174 (name == TGSI_SEMANTIC_COLOR || name == TGSI_SEMANTIC_BCOLOR)) 175 { 176 output[slot][0] = CLAMP(machine->Outputs[slot].xyzw[0].f[j], 0.0f, 1.0f); 177 output[slot][1] = CLAMP(machine->Outputs[slot].xyzw[1].f[j], 0.0f, 1.0f); 178 output[slot][2] = CLAMP(machine->Outputs[slot].xyzw[2].f[j], 0.0f, 1.0f); 179 output[slot][3] = CLAMP(machine->Outputs[slot].xyzw[3].f[j], 0.0f, 1.0f); 180 } 181 else 182 { 183 output[slot][0] = machine->Outputs[slot].xyzw[0].f[j]; 184 output[slot][1] = machine->Outputs[slot].xyzw[1].f[j]; 185 output[slot][2] = machine->Outputs[slot].xyzw[2].f[j]; 186 output[slot][3] = machine->Outputs[slot].xyzw[3].f[j]; 187 } 188 } 189 190 #if 0 191 debug_printf("%d) Post xform vert:\n", i + j); 192 for (slot = 0; slot < shader->info.num_outputs; slot++) { 193 debug_printf("\t%d: %f %f %f %f\n", slot, 194 output[slot][0], 195 output[slot][1], 196 output[slot][2], 197 output[slot][3]); 198 assert(!util_is_inf_or_nan(output[slot][0])); 199 } 200 #endif 201 202 output = (float (*)[4])((char *)output + output_stride); 203 } 204 205 } 206 } 207 208 209 210 211 static void 212 vs_exec_delete( struct draw_vertex_shader *dvs ) 213 { 214 FREE((void*) dvs->state.tokens); 215 FREE( dvs ); 216 } 217 218 219 struct draw_vertex_shader * 220 draw_create_vs_exec(struct draw_context *draw, 221 const struct pipe_shader_state *state) 222 { 223 struct exec_vertex_shader *vs = CALLOC_STRUCT( exec_vertex_shader ); 224 225 if (!vs) 226 return NULL; 227 228 /* we make a private copy of the tokens */ 229 vs->base.state.tokens = tgsi_dup_tokens(state->tokens); 230 if (!vs->base.state.tokens) { 231 FREE(vs); 232 return NULL; 233 } 234 235 tgsi_scan_shader(state->tokens, &vs->base.info); 236 237 vs->base.state.stream_output = state->stream_output; 238 vs->base.draw = draw; 239 vs->base.prepare = vs_exec_prepare; 240 vs->base.run_linear = vs_exec_run_linear; 241 vs->base.delete = vs_exec_delete; 242 vs->base.create_variant = draw_vs_create_variant_generic; 243 vs->machine = draw->vs.tgsi.machine; 244 245 return &vs->base; 246 } 247
