nv50_vbo.c revision fba2eabe13b8a3f8c1396c5949db3daab0192156 
1/*
2 * Copyright 2008 Ben Skeggs
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#include "pipe/p_context.h"
24#include "pipe/p_state.h"
25#include "pipe/p_inlines.h"
26
27#include "nv50_context.h"
28
29static INLINE unsigned
30nv50_prim(unsigned mode)
31{
32	switch (mode) {
33	case PIPE_PRIM_POINTS: return NV50TCL_VERTEX_BEGIN_POINTS;
34	case PIPE_PRIM_LINES: return NV50TCL_VERTEX_BEGIN_LINES;
35	case PIPE_PRIM_LINE_LOOP: return NV50TCL_VERTEX_BEGIN_LINE_LOOP;
36	case PIPE_PRIM_LINE_STRIP: return NV50TCL_VERTEX_BEGIN_LINE_STRIP;
37	case PIPE_PRIM_TRIANGLES: return NV50TCL_VERTEX_BEGIN_TRIANGLES;
38	case PIPE_PRIM_TRIANGLE_STRIP:
39		return NV50TCL_VERTEX_BEGIN_TRIANGLE_STRIP;
40	case PIPE_PRIM_TRIANGLE_FAN: return NV50TCL_VERTEX_BEGIN_TRIANGLE_FAN;
41	case PIPE_PRIM_QUADS: return NV50TCL_VERTEX_BEGIN_QUADS;
42	case PIPE_PRIM_QUAD_STRIP: return NV50TCL_VERTEX_BEGIN_QUAD_STRIP;
43	case PIPE_PRIM_POLYGON: return NV50TCL_VERTEX_BEGIN_POLYGON;
44	default:
45		break;
46	}
47
48	NOUVEAU_ERR("invalid primitive type %d\n", mode);
49	return NV50TCL_VERTEX_BEGIN_POINTS;
50}
51
52static INLINE uint32_t
53nv50_vbo_type_to_hw(unsigned type)
54{
55	switch (type) {
56	case PIPE_FORMAT_TYPE_FLOAT:
57		return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_FLOAT;
58	case PIPE_FORMAT_TYPE_UNORM:
59		return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_UNORM;
60	case PIPE_FORMAT_TYPE_SNORM:
61		return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_SNORM;
62	case PIPE_FORMAT_TYPE_USCALED:
63		return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_USCALED;
64	case PIPE_FORMAT_TYPE_SSCALED:
65		return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_SSCALED;
66	/*
67	case PIPE_FORMAT_TYPE_UINT:
68		return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_UINT;
69	case PIPE_FORMAT_TYPE_SINT:
70		return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_SINT; */
71	default:
72		return 0;
73	}
74}
75
76static INLINE uint32_t
77nv50_vbo_size_to_hw(unsigned size, unsigned nr_c)
78{
79	static const uint32_t hw_values[] = {
80		0, 0, 0, 0,
81		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8,
82		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8_8,
83		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8_8_8,
84		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8_8_8_8,
85		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16,
86		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16_16,
87		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16_16_16,
88		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16_16_16_16,
89		0, 0, 0, 0,
90		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32,
91		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32_32,
92		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32_32_32,
93		NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32_32_32_32 };
94
95	/* we'd also have R11G11B10 and R10G10B10A2 */
96
97	assert(nr_c > 0 && nr_c <= 4);
98
99	if (size > 32)
100		return 0;
101	size >>= (3 - 2);
102
103	return hw_values[size + (nr_c - 1)];
104}
105
106static INLINE uint32_t
107nv50_vbo_vtxelt_to_hw(struct pipe_vertex_element *ve)
108{
109	uint32_t hw_type, hw_size;
110	enum pipe_format pf = ve->src_format;
111	unsigned size = pf_size_x(pf) << pf_exp2(pf);
112
113	hw_type = nv50_vbo_type_to_hw(pf_type(pf));
114	hw_size = nv50_vbo_size_to_hw(size, ve->nr_components);
115
116	if (!hw_type || !hw_size) {
117		NOUVEAU_ERR("unsupported vbo format: %s\n", pf_name(pf));
118		abort();
119		return 0x24e80000;
120	}
121
122	if (pf_swizzle_x(pf) == 2) /* BGRA */
123		hw_size |= (1 << 31); /* no real swizzle bits :-( */
124
125	return (hw_type | hw_size);
126}
127
128boolean
129nv50_draw_arrays(struct pipe_context *pipe, unsigned mode, unsigned start,
130		 unsigned count)
131{
132	struct nv50_context *nv50 = nv50_context(pipe);
133	struct nouveau_channel *chan = nv50->screen->tesla->channel;
134	struct nouveau_grobj *tesla = nv50->screen->tesla;
135
136	nv50_state_validate(nv50);
137
138	BEGIN_RING(chan, tesla, 0x142c, 1);
139	OUT_RING  (chan, 0);
140	BEGIN_RING(chan, tesla, 0x142c, 1);
141	OUT_RING  (chan, 0);
142
143	BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
144	OUT_RING  (chan, nv50_prim(mode));
145	BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BUFFER_FIRST, 2);
146	OUT_RING  (chan, start);
147	OUT_RING  (chan, count);
148	BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
149	OUT_RING  (chan, 0);
150
151	pipe->flush(pipe, 0, NULL);
152	return TRUE;
153}
154
155static INLINE void
156nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
157			      unsigned start, unsigned count)
158{
159	struct nouveau_channel *chan = nv50->screen->tesla->channel;
160	struct nouveau_grobj *tesla = nv50->screen->tesla;
161
162	map += start;
163
164	if (count & 1) {
165		BEGIN_RING(chan, tesla, 0x15e8, 1);
166		OUT_RING  (chan, map[0]);
167		map++;
168		count--;
169	}
170
171	while (count) {
172		unsigned nr = count > 2046 ? 2046 : count;
173		int i;
174
175		BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
176		for (i = 0; i < nr; i += 2)
177			OUT_RING  (chan, (map[i + 1] << 16) | map[i]);
178
179		count -= nr;
180		map += nr;
181	}
182}
183
184static INLINE void
185nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
186			      unsigned start, unsigned count)
187{
188	struct nouveau_channel *chan = nv50->screen->tesla->channel;
189	struct nouveau_grobj *tesla = nv50->screen->tesla;
190
191	map += start;
192
193	if (count & 1) {
194		BEGIN_RING(chan, tesla, 0x15e8, 1);
195		OUT_RING  (chan, map[0]);
196		map++;
197		count--;
198	}
199
200	while (count) {
201		unsigned nr = count > 2046 ? 2046 : count;
202		int i;
203
204		BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
205		for (i = 0; i < nr; i += 2)
206			OUT_RING  (chan, (map[i + 1] << 16) | map[i]);
207
208		count -= nr;
209		map += nr;
210	}
211}
212
213static INLINE void
214nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint32_t *map,
215			      unsigned start, unsigned count)
216{
217	struct nouveau_channel *chan = nv50->screen->tesla->channel;
218	struct nouveau_grobj *tesla = nv50->screen->tesla;
219
220	map += start;
221
222	while (count) {
223		unsigned nr = count > 2047 ? 2047 : count;
224
225		BEGIN_RING(chan, tesla, 0x400015e8, nr);
226		OUT_RINGp (chan, map, nr);
227
228		count -= nr;
229		map += nr;
230	}
231}
232
233boolean
234nv50_draw_elements(struct pipe_context *pipe,
235		   struct pipe_buffer *indexBuffer, unsigned indexSize,
236		   unsigned mode, unsigned start, unsigned count)
237{
238	struct nv50_context *nv50 = nv50_context(pipe);
239	struct nouveau_channel *chan = nv50->screen->tesla->channel;
240	struct nouveau_grobj *tesla = nv50->screen->tesla;
241	struct pipe_screen *pscreen = pipe->screen;
242	void *map;
243
244	map = pipe_buffer_map(pscreen, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
245
246	nv50_state_validate(nv50);
247
248	BEGIN_RING(chan, tesla, 0x142c, 1);
249	OUT_RING  (chan, 0);
250	BEGIN_RING(chan, tesla, 0x142c, 1);
251	OUT_RING  (chan, 0);
252
253	BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
254	OUT_RING  (chan, nv50_prim(mode));
255	switch (indexSize) {
256	case 1:
257		nv50_draw_elements_inline_u08(nv50, map, start, count);
258		break;
259	case 2:
260		nv50_draw_elements_inline_u16(nv50, map, start, count);
261		break;
262	case 4:
263		nv50_draw_elements_inline_u32(nv50, map, start, count);
264		break;
265	default:
266		assert(0);
267	}
268	BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
269	OUT_RING  (chan, 0);
270
271	pipe_buffer_unmap(pscreen, indexBuffer);
272	pipe->flush(pipe, 0, NULL);
273	return TRUE;
274}
275
276static INLINE boolean
277nv50_vbo_static_attrib(struct nv50_context *nv50, unsigned attrib,
278		       struct nouveau_stateobj **pso,
279		       struct pipe_vertex_element *ve,
280		       struct pipe_vertex_buffer *vb)
281
282{
283	struct nouveau_stateobj *so;
284	struct nouveau_grobj *tesla = nv50->screen->tesla;
285	struct nouveau_bo *bo = nouveau_bo(vb->buffer);
286	float *v;
287	int ret;
288	enum pipe_format pf = ve->src_format;
289
290	if ((pf_type(pf) != PIPE_FORMAT_TYPE_FLOAT) ||
291	    (pf_size_x(pf) << pf_exp2(pf)) != 32)
292		return FALSE;
293
294	ret = nouveau_bo_map(bo, NOUVEAU_BO_RD);
295	if (ret)
296		return FALSE;
297	v = (float *)(bo->map + (vb->buffer_offset + ve->src_offset));
298
299	so = *pso;
300	if (!so)
301		*pso = so = so_new(nv50->vtxelt_nr * 5, 0);
302
303	switch (ve->nr_components) {
304	case 4:
305		so_method(so, tesla, NV50TCL_VTX_ATTR_4F_X(attrib), 4);
306		so_data  (so, fui(v[0]));
307		so_data  (so, fui(v[1]));
308		so_data  (so, fui(v[2]));
309		so_data  (so, fui(v[3]));
310		break;
311	case 3:
312		so_method(so, tesla, NV50TCL_VTX_ATTR_3F_X(attrib), 3);
313		so_data  (so, fui(v[0]));
314		so_data  (so, fui(v[1]));
315		so_data  (so, fui(v[2]));
316		break;
317	case 2:
318		so_method(so, tesla, NV50TCL_VTX_ATTR_2F_X(attrib), 2);
319		so_data  (so, fui(v[0]));
320		so_data  (so, fui(v[1]));
321		break;
322	case 1:
323		so_method(so, tesla, NV50TCL_VTX_ATTR_1F(attrib), 1);
324		so_data  (so, fui(v[0]));
325		break;
326	default:
327		nouveau_bo_unmap(bo);
328		return FALSE;
329	}
330
331	nouveau_bo_unmap(bo);
332	return TRUE;
333}
334
335void
336nv50_vbo_validate(struct nv50_context *nv50)
337{
338	struct nouveau_grobj *tesla = nv50->screen->tesla;
339	struct nouveau_stateobj *vtxbuf, *vtxfmt, *vtxattr;
340	unsigned i;
341
342	/* don't validate if Gallium took away our buffers */
343	if (nv50->vtxbuf_nr == 0)
344		return;
345
346	vtxattr = NULL;
347	vtxbuf = so_new(nv50->vtxelt_nr * 7, nv50->vtxelt_nr * 4);
348	vtxfmt = so_new(nv50->vtxelt_nr + 1, 0);
349	so_method(vtxfmt, tesla, NV50TCL_VERTEX_ARRAY_ATTRIB(0),
350		nv50->vtxelt_nr);
351
352	for (i = 0; i < nv50->vtxelt_nr; i++) {
353		struct pipe_vertex_element *ve = &nv50->vtxelt[i];
354		struct pipe_vertex_buffer *vb =
355			&nv50->vtxbuf[ve->vertex_buffer_index];
356		struct nouveau_bo *bo = nouveau_bo(vb->buffer);
357		uint32_t hw = nv50_vbo_vtxelt_to_hw(ve);
358
359		if (!vb->stride &&
360		    nv50_vbo_static_attrib(nv50, i, &vtxattr, ve, vb)) {
361			so_data(vtxfmt, hw | (1 << 4));
362
363			so_method(vtxbuf, tesla,
364				  NV50TCL_VERTEX_ARRAY_FORMAT(i), 1);
365			so_data  (vtxbuf, 0);
366			continue;
367		}
368		so_data(vtxfmt, hw | i);
369
370		so_method(vtxbuf, tesla, NV50TCL_VERTEX_ARRAY_FORMAT(i), 3);
371		so_data  (vtxbuf, 0x20000000 | vb->stride);
372		so_reloc (vtxbuf, bo, vb->buffer_offset +
373			  ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
374			  NOUVEAU_BO_RD | NOUVEAU_BO_HIGH, 0, 0);
375		so_reloc (vtxbuf, bo, vb->buffer_offset +
376			  ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
377			  NOUVEAU_BO_RD | NOUVEAU_BO_LOW, 0, 0);
378
379		/* vertex array limits */
380		so_method(vtxbuf, tesla, 0x1080 + (i * 8), 2);
381		so_reloc (vtxbuf, bo, vb->buffer->size - 1,
382			  NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD |
383			  NOUVEAU_BO_HIGH, 0, 0);
384		so_reloc (vtxbuf, bo, vb->buffer->size - 1,
385			  NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD |
386			  NOUVEAU_BO_LOW, 0, 0);
387	}
388
389	so_ref (vtxfmt, &nv50->state.vtxfmt);
390	so_ref (vtxbuf, &nv50->state.vtxbuf);
391	so_ref (vtxattr, &nv50->state.vtxattr);
392	so_ref (NULL, &vtxbuf);
393	so_ref (NULL, &vtxfmt);
394	so_ref (NULL, &vtxattr);
395}
396
397