157
static INLINE int num_vertices_for_prim(int prim)
160
case PIPE_PRIM_POINTS:
162
case PIPE_PRIM_LINES:
164
case PIPE_PRIM_LINE_LOOP:
166
case PIPE_PRIM_LINE_STRIP:
168
case PIPE_PRIM_TRIANGLES:
170
case PIPE_PRIM_TRIANGLE_STRIP:
172
case PIPE_PRIM_TRIANGLE_FAN:
174
case PIPE_PRIM_LINES_ADJACENCY:
175
case PIPE_PRIM_LINE_STRIP_ADJACENCY:
177
case PIPE_PRIM_TRIANGLES_ADJACENCY:
178
case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
181
assert(!"Bad geometry shader input");
186
static void draw_fetch_geometry_input(struct draw_geometry_shader *shader,
189
const float (*input_ptr)[4],
190
unsigned input_vertex_stride,
191
unsigned inputs_from_vs)
193
struct tgsi_exec_machine *machine = shader->machine;
194
unsigned slot, vs_slot, k, j;
195
unsigned num_vertices = num_vertices_for_prim(shader->input_primitive);
198
for (slot = 0, vs_slot = 0; slot < shader->info.num_inputs; slot++) {
199
/*debug_printf("Slot = %d (semantic = %d)\n", slot,
200
shader->info.input_semantic_name[slot]);*/
201
if (shader->info.input_semantic_name[slot] ==
202
TGSI_SEMANTIC_PRIMID) {
203
for (j = 0; j < num_primitives; ++j) {
204
machine->Inputs[idx].xyzw[0].f[j] = (float)start_primitive + j;
205
machine->Inputs[idx].xyzw[1].f[j] = (float)start_primitive + j;
206
machine->Inputs[idx].xyzw[2].f[j] = (float)start_primitive + j;
207
machine->Inputs[idx].xyzw[3].f[j] = (float)start_primitive + j;
211
for (j = 0; j < num_primitives; ++j) {
213
const float (*prim_ptr)[4];
214
/*debug_printf(" %d) Prim (num_verts = %d)\n", start_primitive + j,
216
prim_ptr = (const float (*)[4])(
217
(const char *)input_ptr +
218
(j * num_vertices * input_vertex_stride));
220
for (k = 0; k < num_vertices; ++k, ++vidx) {
221
const float (*input)[4];
222
input = (const float (*)[4])(
223
(const char *)prim_ptr + (k * input_vertex_stride));
224
vidx = k * TGSI_EXEC_MAX_INPUT_ATTRIBS + slot;
225
/*debug_printf("\t%d)(%d) Input vert:\n", vidx, k);*/
227
assert(!util_is_inf_or_nan(input[vs_slot][0]));
228
assert(!util_is_inf_or_nan(input[vs_slot][1]));
229
assert(!util_is_inf_or_nan(input[vs_slot][2]));
230
assert(!util_is_inf_or_nan(input[vs_slot][3]));
232
machine->Inputs[vidx].xyzw[0].f[j] = input[vs_slot][0];
233
machine->Inputs[vidx].xyzw[1].f[j] = input[vs_slot][1];
234
machine->Inputs[vidx].xyzw[2].f[j] = input[vs_slot][2];
235
machine->Inputs[vidx].xyzw[3].f[j] = input[vs_slot][3];
237
debug_printf("\t\t%d %f %f %f %f\n", slot,
238
machine->Inputs[vidx].xyzw[0].f[j],
239
machine->Inputs[vidx].xyzw[1].f[j],
240
machine->Inputs[vidx].xyzw[2].f[j],
241
machine->Inputs[vidx].xyzw[3].f[j]);
162
/*#define DEBUG_OUTPUTS 1*/
251
163
static INLINE void
252
164
draw_geometry_fetch_outputs(struct draw_geometry_shader *shader,
253
165
int num_primitives,
255
unsigned vertex_size)
166
float (**p_output)[4])
257
168
struct tgsi_exec_machine *machine = shader->machine;
258
169
unsigned prim_idx, j, slot;
260
174
/* Unswizzle all output results.
262
/* FIXME: handle all the primitives produced by the gs, not just
264
unsigned prim_count =
265
mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0];*/
266
177
for (prim_idx = 0; prim_idx < num_primitives; ++prim_idx) {
267
unsigned num_verts_per_prim = machine->Primitives[0];
178
unsigned num_verts_per_prim = machine->Primitives[prim_idx];
179
shader->primitive_lengths[prim_idx + shader->emitted_primitives] =
180
machine->Primitives[prim_idx];
181
shader->emitted_vertices += num_verts_per_prim;
268
182
for (j = 0; j < num_verts_per_prim; j++) {
269
183
int idx = (prim_idx * num_verts_per_prim + j) *
270
184
shader->info.num_outputs;
271
185
#ifdef DEBUG_OUTPUTS
272
debug_printf("%d) Output vert:\n", idx);
186
debug_printf("%d) Output vert:\n", idx / shader->info.num_outputs);
274
188
for (slot = 0; slot < shader->info.num_outputs; slot++) {
275
output[slot][0] = machine->Outputs[idx + slot].xyzw[0].f[prim_idx];
276
output[slot][1] = machine->Outputs[idx + slot].xyzw[1].f[prim_idx];
277
output[slot][2] = machine->Outputs[idx + slot].xyzw[2].f[prim_idx];
278
output[slot][3] = machine->Outputs[idx + slot].xyzw[3].f[prim_idx];
189
output[slot][0] = machine->Outputs[idx + slot].xyzw[0].f[0];
190
output[slot][1] = machine->Outputs[idx + slot].xyzw[1].f[0];
191
output[slot][2] = machine->Outputs[idx + slot].xyzw[2].f[0];
192
output[slot][3] = machine->Outputs[idx + slot].xyzw[3].f[0];
279
193
#ifdef DEBUG_OUTPUTS
280
194
debug_printf("\t%d: %f %f %f %f\n", slot,
286
200
debug_assert(!util_is_inf_or_nan(output[slot][0]));
288
output = (float (*)[4])((char *)output + vertex_size);
293
void draw_geometry_shader_run(struct draw_geometry_shader *shader,
294
const float (*input)[4],
296
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
298
unsigned input_stride,
299
unsigned vertex_size)
301
struct tgsi_exec_machine *machine = shader->machine;
303
unsigned num_vertices = num_vertices_for_prim(shader->input_primitive);
304
unsigned num_primitives = count/num_vertices;
305
unsigned inputs_from_vs = 0;
307
for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) {
308
machine->Consts[i] = constants[i];
311
for (i = 0; i < shader->info.num_inputs; ++i) {
312
if (shader->info.input_semantic_name[i] != TGSI_SEMANTIC_PRIMID)
316
for (i = 0; i < num_primitives; ++i) {
317
unsigned int max_primitives = 1;
319
draw_fetch_geometry_input(shader, i, max_primitives, input,
320
input_stride, inputs_from_vs);
322
tgsi_set_exec_mask(machine,
328
/* run interpreter */
329
tgsi_exec_machine_run(machine);
331
draw_geometry_fetch_outputs(shader, max_primitives,
332
output, vertex_size);
202
output = (float (*)[4])((char *)output + shader->vertex_size);
206
shader->emitted_primitives += num_primitives;
209
/*#define DEBUG_INPUTS 1*/
210
static void draw_fetch_gs_input(struct draw_geometry_shader *shader,
212
unsigned num_vertices,
215
struct tgsi_exec_machine *machine = shader->machine;
216
unsigned slot, vs_slot, i;
217
unsigned input_vertex_stride = shader->input_vertex_stride;
218
const float (*input_ptr)[4];
220
input_ptr = shader->input;
222
for (i = 0; i < num_vertices; ++i) {
223
const float (*input)[4];
225
debug_printf("%d) vertex index = %d (prim idx = %d)\n",
226
i, indices[i], prim_idx);
228
input = (const float (*)[4])(
229
(const char *)input_ptr + (indices[i] * input_vertex_stride));
230
for (slot = 0, vs_slot = 0; slot < shader->info.num_inputs; ++slot) {
231
unsigned idx = i * TGSI_EXEC_MAX_INPUT_ATTRIBS + slot;
232
if (shader->info.input_semantic_name[slot] == TGSI_SEMANTIC_PRIMID) {
233
machine->Inputs[idx].xyzw[0].f[prim_idx] =
234
(float)shader->in_prim_idx;
235
machine->Inputs[idx].xyzw[1].f[prim_idx] =
236
(float)shader->in_prim_idx;
237
machine->Inputs[idx].xyzw[2].f[prim_idx] =
238
(float)shader->in_prim_idx;
239
machine->Inputs[idx].xyzw[3].f[prim_idx] =
240
(float)shader->in_prim_idx;
243
debug_printf("\tSlot = %d, vs_slot = %d, idx = %d:\n",
247
assert(!util_is_inf_or_nan(input[vs_slot][0]));
248
assert(!util_is_inf_or_nan(input[vs_slot][1]));
249
assert(!util_is_inf_or_nan(input[vs_slot][2]));
250
assert(!util_is_inf_or_nan(input[vs_slot][3]));
252
machine->Inputs[idx].xyzw[0].f[prim_idx] = input[vs_slot][0];
253
machine->Inputs[idx].xyzw[1].f[prim_idx] = input[vs_slot][1];
254
machine->Inputs[idx].xyzw[2].f[prim_idx] = input[vs_slot][2];
255
machine->Inputs[idx].xyzw[3].f[prim_idx] = input[vs_slot][3];
257
debug_printf("\t\t%f %f %f %f\n",
258
machine->Inputs[idx].xyzw[0].f[prim_idx],
259
machine->Inputs[idx].xyzw[1].f[prim_idx],
260
machine->Inputs[idx].xyzw[2].f[prim_idx],
261
machine->Inputs[idx].xyzw[3].f[prim_idx]);
269
static void gs_flush(struct draw_geometry_shader *shader,
270
unsigned input_primitives)
272
unsigned out_prim_count;
273
struct tgsi_exec_machine *machine = shader->machine;
275
debug_assert(input_primitives > 0 &&
276
input_primitives < 4);
278
tgsi_set_exec_mask(machine,
280
input_primitives > 1,
281
input_primitives > 2,
282
input_primitives > 3);
284
/* run interpreter */
285
tgsi_exec_machine_run(machine);
288
machine->Temps[TGSI_EXEC_TEMP_PRIMITIVE_I].xyzw[TGSI_EXEC_TEMP_PRIMITIVE_C].u[0];
291
debug_printf("PRIM emitted prims = %d (verts=%d), cur prim count = %d\n",
292
shader->emitted_primitives, shader->emitted_vertices,
295
draw_geometry_fetch_outputs(shader, out_prim_count,
296
&shader->tmp_output);
299
static void gs_point(struct draw_geometry_shader *shader,
306
draw_fetch_gs_input(shader, indices, 1, 0);
307
++shader->in_prim_idx;
312
static void gs_line(struct draw_geometry_shader *shader,
320
draw_fetch_gs_input(shader, indices, 2, 0);
321
++shader->in_prim_idx;
326
static void gs_line_adj(struct draw_geometry_shader *shader,
327
int i0, int i1, int i2, int i3)
336
draw_fetch_gs_input(shader, indices, 4, 0);
337
++shader->in_prim_idx;
342
static void gs_tri(struct draw_geometry_shader *shader,
343
int i0, int i1, int i2)
351
draw_fetch_gs_input(shader, indices, 3, 0);
352
++shader->in_prim_idx;
357
static void gs_tri_adj(struct draw_geometry_shader *shader,
358
int i0, int i1, int i2,
359
int i3, int i4, int i5)
370
draw_fetch_gs_input(shader, indices, 6, 0);
371
++shader->in_prim_idx;
377
#define GET_ELT(idx) (idx)
378
#include "draw_gs_tmp.h"
381
#define FUNC gs_run_elts
382
#define LOCAL_VARS const ushort *elts = input_prims->elts;
383
#define GET_ELT(idx) (elts[idx])
384
#include "draw_gs_tmp.h"
388
* Execute geometry shader using TGSI interpreter.
390
int draw_geometry_shader_run(struct draw_geometry_shader *shader,
391
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
392
const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
393
const struct draw_vertex_info *input_verts,
394
const struct draw_prim_info *input_prim,
395
struct draw_vertex_info *output_verts,
396
struct draw_prim_info *output_prims )
398
const float (*input)[4] = (const float (*)[4])input_verts->verts->data;
399
unsigned input_stride = input_verts->vertex_size;
400
unsigned vertex_size = input_verts->vertex_size;
401
struct tgsi_exec_machine *machine = shader->machine;
402
unsigned num_input_verts = input_prim->linear ?
405
unsigned num_in_primitives =
406
MAX2(u_gs_prims_for_vertices(input_prim->prim, num_input_verts),
407
u_gs_prims_for_vertices(shader->input_primitive, num_input_verts));
408
unsigned max_out_prims = u_gs_prims_for_vertices(shader->output_primitive,
409
shader->max_output_vertices)
412
output_verts->vertex_size = input_verts->vertex_size;
413
output_verts->stride = input_verts->vertex_size;
414
output_verts->verts =
415
(struct vertex_header *)MALLOC(input_verts->vertex_size *
417
shader->max_output_vertices);
421
debug_printf("%s count = %d (in prims # = %d)\n",
422
__FUNCTION__, num_input_verts, num_in_primitives);
423
debug_printf("\tlinear = %d, prim_info->count = %d\n",
424
input_prim->linear, input_prim->count);
425
debug_printf("\tprimt pipe = %d, shader in = %d, shader out = %d, max out = %d\n",
426
input_prim->prim, shader->input_primitive,
427
shader->output_primitive,
428
shader->max_output_vertices);
431
shader->emitted_vertices = 0;
432
shader->emitted_primitives = 0;
433
shader->vertex_size = vertex_size;
434
shader->tmp_output = (float (*)[4])output_verts->verts->data;
435
shader->in_prim_idx = 0;
436
shader->input_vertex_stride = input_stride;
437
shader->input = input;
438
if (shader->primitive_lengths) {
439
FREE(shader->primitive_lengths);
441
shader->primitive_lengths = MALLOC(max_out_prims * sizeof(unsigned));
443
tgsi_exec_set_constant_buffers(machine, PIPE_MAX_CONSTANT_BUFFERS,
444
constants, constants_size);
446
if (input_prim->linear)
447
gs_run(shader, input_prim, input_verts,
448
output_prims, output_verts);
450
gs_run_elts(shader, input_prim, input_verts,
451
output_prims, output_verts);
455
output_prims->linear = TRUE;
456
output_prims->elts = NULL;
457
output_prims->start = 0;
458
output_prims->count = shader->emitted_vertices;
459
output_prims->prim = shader->output_primitive;
460
output_prims->flags = 0x0;
461
output_prims->primitive_lengths = shader->primitive_lengths;
462
output_prims->primitive_count = shader->emitted_primitives;
463
output_verts->count = shader->emitted_vertices;
466
debug_printf("GS finished, prims = %d, verts = %d\n",
467
output_prims->primitive_count,
468
output_verts->count);
471
return shader->emitted_vertices;
336
474
void draw_geometry_shader_delete(struct draw_geometry_shader *shader)