summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/nvfx/nvfx_push.c
blob: ebf47e6ed30715f249be2cac3a4bc73f2d72f6fe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_split_prim.h"
#include "translate/translate.h"

#include "nvfx_context.h"
#include "nvfx_resource.h"

struct push_context {
	struct nouveau_channel* chan;

	void *idxbuf;
	int32_t idxbias;

	float edgeflag;
	int edgeflag_attr;

	unsigned vertex_length;
	unsigned max_vertices_per_packet;

	struct translate* translate;
};

static void
emit_edgeflag(void *priv, boolean enabled)
{
	struct push_context* ctx = priv;
	struct nouveau_channel *chan = ctx->chan;

	OUT_RING(chan, RING_3D(NV30_3D_EDGEFLAG, 1));
	OUT_RING(chan, enabled ? 1 : 0);
}

static void
emit_vertices_lookup8(void *priv, unsigned start, unsigned count)
{
        struct push_context *ctx = priv;
        uint8_t* elts = (uint8_t*)ctx->idxbuf + start;

        while(count)
        {
                unsigned push = MIN2(count, ctx->max_vertices_per_packet);
                unsigned length = push * ctx->vertex_length;

                OUT_RING(ctx->chan, RING_3D_NI(NV30_3D_VERTEX_DATA, length));
                ctx->translate->run_elts8(ctx->translate, elts, push, 0, ctx->chan->cur);
                ctx->chan->cur += length;

                count -= push;
                elts += push;
        }
}

static void
emit_vertices_lookup16(void *priv, unsigned start, unsigned count)
{
	struct push_context *ctx = priv;
        uint16_t* elts = (uint16_t*)ctx->idxbuf + start;

        while(count)
        {
                unsigned push = MIN2(count, ctx->max_vertices_per_packet);
                unsigned length = push * ctx->vertex_length;

                OUT_RING(ctx->chan, RING_3D_NI(NV30_3D_VERTEX_DATA, length));
                ctx->translate->run_elts16(ctx->translate, elts, push, 0, ctx->chan->cur);
                ctx->chan->cur += length;

                count -= push;
                elts += push;
        }
}

static void
emit_vertices_lookup32(void *priv, unsigned start, unsigned count)
{
        struct push_context *ctx = priv;
        uint32_t* elts = (uint32_t*)ctx->idxbuf + start;

        while(count)
        {
                unsigned push = MIN2(count, ctx->max_vertices_per_packet);
                unsigned length = push * ctx->vertex_length;

                OUT_RING(ctx->chan, RING_3D_NI(NV30_3D_VERTEX_DATA, length));
                ctx->translate->run_elts(ctx->translate, elts, push, 0, ctx->chan->cur);
                ctx->chan->cur += length;

                count -= push;
                elts += push;
        }
}

static void
emit_vertices(void *priv, unsigned start, unsigned count)
{
        struct push_context *ctx = priv;

        while(count)
        {
		unsigned push = MIN2(count, ctx->max_vertices_per_packet);
		unsigned length = push * ctx->vertex_length;

		OUT_RING(ctx->chan, RING_3D_NI(NV30_3D_VERTEX_DATA, length));
		ctx->translate->run(ctx->translate, start, push, 0, ctx->chan->cur);
		ctx->chan->cur += length;

		count -= push;
		start += push;
        }
}

static void
emit_ranges(void* priv, unsigned start, unsigned vc, unsigned reg)
{
	struct push_context* ctx = priv;
	struct nouveau_channel *chan = ctx->chan;
	unsigned nr = (vc & 0xff);
	if (nr) {
		OUT_RING(chan, RING_3D(reg, 1));
		OUT_RING  (chan, ((nr - 1) << 24) | start);
		start += nr;
	}

	nr = vc >> 8;
	while (nr) {
		unsigned push = nr > 2047 ? 2047 : nr;

		nr -= push;

		OUT_RING(chan, RING_3D_NI(reg, push));
		while (push--) {
			OUT_RING(chan, ((0x100 - 1) << 24) | start);
			start += 0x100;
		}
	}
}

static void
emit_ib_ranges(void* priv, unsigned start, unsigned vc)
{
	emit_ranges(priv, start, vc, NV30_3D_VB_INDEX_BATCH);
}

static void
emit_vb_ranges(void* priv, unsigned start, unsigned vc)
{
	emit_ranges(priv, start, vc, NV30_3D_VB_VERTEX_BATCH);
}

static INLINE void
emit_elt8(void* priv, unsigned start, unsigned vc)
{
	struct push_context* ctx = priv;
	struct nouveau_channel *chan = ctx->chan;
	uint8_t *elts = (uint8_t *)ctx->idxbuf + start;
	int idxbias = ctx->idxbias;

	if (vc & 1) {
		OUT_RING(chan, RING_3D(NV30_3D_VB_ELEMENT_U32, 1));
		OUT_RING  (chan, elts[0]);
		elts++; vc--;
	}

	while (vc) {
		unsigned i;
		unsigned push = MIN2(vc, 2047 * 2);

		OUT_RING(chan, RING_3D_NI(NV30_3D_VB_ELEMENT_U16, push >> 1));
		for (i = 0; i < push; i+=2)
			OUT_RING(chan, ((elts[i+1] + idxbias) << 16) | (elts[i] + idxbias));

		vc -= push;
		elts += push;
	}
}

static INLINE void
emit_elt16(void* priv, unsigned start, unsigned vc)
{
	struct push_context* ctx = priv;
	struct nouveau_channel *chan = ctx->chan;
	uint16_t *elts = (uint16_t *)ctx->idxbuf + start;
	int idxbias = ctx->idxbias;

	if (vc & 1) {
		OUT_RING(chan, RING_3D(NV30_3D_VB_ELEMENT_U32, 1));
		OUT_RING  (chan, elts[0]);
		elts++; vc--;
	}

	while (vc) {
		unsigned i;
		unsigned push = MIN2(vc, 2047 * 2);

		OUT_RING(chan, RING_3D_NI(NV30_3D_VB_ELEMENT_U16, push >> 1));
		for (i = 0; i < push; i+=2)
			OUT_RING(chan, ((elts[i+1] + idxbias) << 16) | (elts[i] + idxbias));

		vc -= push;
		elts += push;
	}
}

static INLINE void
emit_elt32(void* priv, unsigned start, unsigned vc)
{
	struct push_context* ctx = priv;
	struct nouveau_channel *chan = ctx->chan;
	uint32_t *elts = (uint32_t *)ctx->idxbuf + start;
	int idxbias = ctx->idxbias;

	while (vc) {
		unsigned push = MIN2(vc, 2047);

		OUT_RING(chan, RING_3D_NI(NV30_3D_VB_ELEMENT_U32, push));
		assert(AVAIL_RING(chan) >= push);
		if(idxbias)
		{
			for(unsigned i = 0; i < push; ++i)
				OUT_RING(chan, elts[i] + idxbias);
		}
		else
			OUT_RINGp(chan, elts, push);

		vc -= push;
		elts += push;
	}
}

void
nvfx_push_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
{
	struct nvfx_context *nvfx = nvfx_context(pipe);
	struct nouveau_channel *chan = nvfx->screen->base.channel;
	struct push_context ctx;
	struct util_split_prim s;
	unsigned instances_left = info->instance_count;
	int vtx_value;
	unsigned hw_mode = nvgl_primitive(info->mode);
	int i;
	struct
	{
		uint8_t* map;
		unsigned step;
	} per_instance[16];
	unsigned p_overhead = 64 /* magic fix */
			+ 4 /* begin/end */
			+ 4; /* potential edgeflag enable/disable */

	ctx.chan = nvfx->screen->base.channel;
	ctx.translate = nvfx->vtxelt->translate;
	ctx.idxbuf = NULL;
	ctx.vertex_length = nvfx->vtxelt->vertex_length;
	ctx.max_vertices_per_packet = nvfx->vtxelt->max_vertices_per_packet;
	ctx.edgeflag = 0.5f;
	// TODO: figure out if we really want to handle this, and do so in that case
	ctx.edgeflag_attr = 0xff; // nvfx->vertprog->cfg.edgeflag_in;

	if(!nvfx->use_vertex_buffers)
	{
		for(i = 0; i < nvfx->vtxelt->num_per_vertex_buffer_infos; ++i)
		{
			struct nvfx_per_vertex_buffer_info* vbi = &nvfx->vtxelt->per_vertex_buffer_info[i];
			struct pipe_vertex_buffer *vb = &nvfx->vtxbuf[vbi->vertex_buffer_index];
			uint8_t* data = nvfx_buffer(vb->buffer)->data + vb->buffer_offset;
			if(info->indexed)
				data += info->index_bias * vb->stride;
			ctx.translate->set_buffer(ctx.translate, i, data, vb->stride, ~0);
		}

		if(ctx.edgeflag_attr < 16)
			vtx_value = -(ctx.vertex_length + 3);  /* vertex data and edgeflag header and value */
		else
		{
			p_overhead += 1; /* initial vertex_data header */
			vtx_value = -ctx.vertex_length;  /* vertex data and edgeflag header and value */
		}

		if (info->indexed) {
			// XXX: this case and is broken and probably need a new VTX_ATTR push path
			if (nvfx->idxbuf.index_size == 1)
				s.emit = emit_vertices_lookup8;
			else if (nvfx->idxbuf.index_size == 2)
				s.emit = emit_vertices_lookup16;
			else
				s.emit = emit_vertices_lookup32;
		} else
			s.emit = emit_vertices;
	}
	else
	{
		if(!info->indexed || nvfx->use_index_buffer)
		{
			s.emit = info->indexed ? emit_ib_ranges : emit_vb_ranges;
			p_overhead += 3;
			vtx_value = 0;
		}
		else if (nvfx->idxbuf.index_size == 4)
		{
			s.emit = emit_elt32;
			p_overhead += 1;
			vtx_value = 8;
		}
		else
		{
			s.emit = (nvfx->idxbuf.index_size == 2) ? emit_elt16 : emit_elt8;
			p_overhead += 3;
			vtx_value = 7;
		}
	}

	ctx.idxbias = info->index_bias;
	if(nvfx->use_vertex_buffers)
		ctx.idxbias -= nvfx->base_vertex;

	/* map index buffer, if present */
	if (info->indexed && !nvfx->use_index_buffer)
		ctx.idxbuf = nvfx_buffer(nvfx->idxbuf.buffer)->data + nvfx->idxbuf.offset;

	s.priv = &ctx;
	s.edge = emit_edgeflag;

	for (i = 0; i < nvfx->vtxelt->num_per_instance; ++i)
	{
		struct nvfx_per_instance_element *ve = &nvfx->vtxelt->per_instance[i];
		struct pipe_vertex_buffer *vb = &nvfx->vtxbuf[ve->base.vertex_buffer_index];
		float v[4];
		per_instance[i].step = info->start_instance % ve->instance_divisor;
		per_instance[i].map = nvfx_buffer(vb->buffer)->data + vb->buffer_offset + ve->base.src_offset;

		nvfx->vtxelt->per_instance[i].base.fetch_rgba_float(v, per_instance[i].map, 0, 0);

		WAIT_RING(chan, 5);
		nvfx_emit_vtx_attr(chan, nvfx->vtxelt->per_instance[i].base.idx, v, nvfx->vtxelt->per_instance[i].base.ncomp);
	}

	/* per-instance loop */
	while (instances_left--) {
		int max_verts;
		boolean done;

		util_split_prim_init(&s, info->mode, info->start, info->count);
		nvfx_state_emit(nvfx);
		for(;;) {
			max_verts  = AVAIL_RING(chan);
			max_verts -= p_overhead;

			/* if vtx_value < 0, each vertex is -vtx_value words long
			 * otherwise, each vertex is 2^(vtx_value) / 255 words long (this is an approximation)
			 */
			if(vtx_value < 0)
			{
				max_verts /= -vtx_value;
				max_verts -= (max_verts >> 10); /* vertex data headers */
			}
			else
			{
				if(max_verts >= (1 << 23)) /* avoid overflow here */
					max_verts = (1 << 23);
				max_verts = (max_verts * 255) >> vtx_value;
			}

			//printf("avail %u max_verts %u\n", AVAIL_RING(chan), max_verts);

			if(max_verts >= 16)
			{
				/* XXX: any command a lot of times seems to (mostly) fix corruption that would otherwise happen */
				/* this seems to cause issues on nv3x, and also be unneeded there */
				if(nvfx->is_nv4x)
				{
					int i;
					for(i = 0; i < 32; ++i)
					{
						OUT_RING(chan, RING_3D(0x1dac, 1));
						OUT_RING(chan, 0);
					}
				}

				OUT_RING(chan, RING_3D(NV30_3D_VERTEX_BEGIN_END, 1));
				OUT_RING(chan, hw_mode);
				done = util_split_prim_next(&s, max_verts);
				OUT_RING(chan, RING_3D(NV30_3D_VERTEX_BEGIN_END, 1));
				OUT_RING(chan, 0);

				if(done)
					break;
			}

			FIRE_RING(chan);
			nvfx_state_emit(nvfx);
		}

		/* set data for the next instance, if any changed */
		for (i = 0; i < nvfx->vtxelt->num_per_instance; ++i)
		{
			struct nvfx_per_instance_element *ve = &nvfx->vtxelt->per_instance[i];
			struct pipe_vertex_buffer *vb = &nvfx->vtxbuf[ve->base.vertex_buffer_index];

			if(++per_instance[i].step == ve->instance_divisor)
			{
				float v[4];
				per_instance[i].map += vb->stride;
				per_instance[i].step = 0;

				nvfx->vtxelt->per_instance[i].base.fetch_rgba_float(v, per_instance[i].map, 0, 0);
				WAIT_RING(chan, 5);
				nvfx_emit_vtx_attr(chan, nvfx->vtxelt->per_instance[i].base.idx, v, nvfx->vtxelt->per_instance[i].base.ncomp);
			}
		}
	}
}