summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/nvfx/nv04_surface_2d.c
blob: 7acbb505df3387ffda7418a01862170fd395ab8a (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
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
#include "pipe/p_context.h"
#include "pipe/p_format.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"

#include "nouveau/nouveau_winsys.h"
#include "nouveau/nouveau_util.h"
#include "nouveau/nouveau_screen.h"
#include "nv04_surface_2d.h"

static INLINE int
nv04_surface_format(enum pipe_format format)
{
	switch (format) {
	case PIPE_FORMAT_A8_UNORM:
	case PIPE_FORMAT_L8_UNORM:
	case PIPE_FORMAT_I8_UNORM:
		return NV04_CONTEXT_SURFACES_2D_FORMAT_Y8;
	case PIPE_FORMAT_R16_SNORM:
	case PIPE_FORMAT_B5G6R5_UNORM:
	case PIPE_FORMAT_Z16_UNORM:
	case PIPE_FORMAT_L8A8_UNORM:
		return NV04_CONTEXT_SURFACES_2D_FORMAT_R5G6B5;
	case PIPE_FORMAT_B8G8R8X8_UNORM:
	case PIPE_FORMAT_B8G8R8A8_UNORM:
		return NV04_CONTEXT_SURFACES_2D_FORMAT_A8R8G8B8;
	case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
	case PIPE_FORMAT_X8Z24_UNORM:
		return NV04_CONTEXT_SURFACES_2D_FORMAT_Y32;
	default:
		return -1;
	}
}

static INLINE int
nv04_rect_format(enum pipe_format format)
{
	switch (format) {
	case PIPE_FORMAT_A8_UNORM:
		return NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT_A8R8G8B8;
	case PIPE_FORMAT_B5G6R5_UNORM:
	case PIPE_FORMAT_L8A8_UNORM:
	case PIPE_FORMAT_Z16_UNORM:
		return NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT_A16R5G6B5;
	case PIPE_FORMAT_B8G8R8X8_UNORM:
	case PIPE_FORMAT_B8G8R8A8_UNORM:
	case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
	case PIPE_FORMAT_X8Z24_UNORM:
		return NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT_A8R8G8B8;
	default:
		return -1;
	}
}

static INLINE int
nv04_scaled_image_format(enum pipe_format format)
{
	switch (format) {
	case PIPE_FORMAT_A8_UNORM:
	case PIPE_FORMAT_L8_UNORM:
	case PIPE_FORMAT_I8_UNORM:
		return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_Y8;
	case PIPE_FORMAT_B5G5R5A1_UNORM:
		return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_A1R5G5B5;
	case PIPE_FORMAT_B8G8R8A8_UNORM:
		return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_A8R8G8B8;
	case PIPE_FORMAT_B8G8R8X8_UNORM:
		return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_X8R8G8B8;
	case PIPE_FORMAT_B5G6R5_UNORM:
	case PIPE_FORMAT_R16_SNORM:
	case PIPE_FORMAT_L8A8_UNORM:
		return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_R5G6B5;
	default:
		return -1;
	}
}

static INLINE unsigned
nv04_swizzle_bits_square(unsigned x, unsigned y)
{
	unsigned u = (x & 0x001) << 0 |
	             (x & 0x002) << 1 |
	             (x & 0x004) << 2 |
	             (x & 0x008) << 3 |
	             (x & 0x010) << 4 |
	             (x & 0x020) << 5 |
	             (x & 0x040) << 6 |
	             (x & 0x080) << 7 |
	             (x & 0x100) << 8 |
	             (x & 0x200) << 9 |
	             (x & 0x400) << 10 |
	             (x & 0x800) << 11;

	unsigned v = (y & 0x001) << 1 |
	             (y & 0x002) << 2 |
	             (y & 0x004) << 3 |
	             (y & 0x008) << 4 |
	             (y & 0x010) << 5 |
	             (y & 0x020) << 6 |
	             (y & 0x040) << 7 |
	             (y & 0x080) << 8 |
	             (y & 0x100) << 9 |
	             (y & 0x200) << 10 |
	             (y & 0x400) << 11 |
	             (y & 0x800) << 12;
	return v | u;
}

/* rectangular swizzled textures are linear concatenations of swizzled square tiles */
static INLINE unsigned
nv04_swizzle_bits(unsigned x, unsigned y, unsigned w, unsigned h)
{
	unsigned s = MIN2(w, h);
	unsigned m = s - 1;
	return (((x | y) & ~m) * s) | nv04_swizzle_bits_square(x & m, y & m);
}

static int
nv04_surface_copy_swizzle(struct nv04_surface_2d *ctx,
			  struct pipe_surface *dst, int dx, int dy,
			  struct pipe_surface *src, int sx, int sy,
			  int w, int h)
{
	struct nouveau_channel *chan = ctx->swzsurf->channel;
	struct nouveau_grobj *swzsurf = ctx->swzsurf;
	struct nouveau_grobj *sifm = ctx->sifm;
	struct nouveau_bo *src_bo = ctx->buf(src);
	struct nouveau_bo *dst_bo = ctx->buf(dst);
	const unsigned src_pitch = ((struct nv04_surface *)src)->pitch;
        /* Max width & height may not be the same on all HW, but must be POT */
	const unsigned max_w = 1024;
	const unsigned max_h = 1024;
	unsigned sub_w = w > max_w ? max_w : w;
	unsigned sub_h = h > max_h ? max_h : h;
	unsigned x;
	unsigned y;

        /* Swizzled surfaces must be POT  */
	assert(util_is_pot(dst->width) && util_is_pot(dst->height));

        /* If area is too large to copy in one shot we must copy it in POT chunks to meet alignment requirements */
	assert(sub_w == w || util_is_pot(sub_w));
	assert(sub_h == h || util_is_pot(sub_h));

	MARK_RING (chan, 8 + ((w+sub_w)/sub_w)*((h+sub_h)/sub_h)*17, 2 +
			 ((w+sub_w)/sub_w)*((h+sub_h)/sub_h)*2);

	BEGIN_RING(chan, swzsurf, NV04_SWIZZLED_SURFACE_DMA_IMAGE, 1);
	OUT_RELOCo(chan, dst_bo,
	                 NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);

	BEGIN_RING(chan, swzsurf, NV04_SWIZZLED_SURFACE_FORMAT, 1);
	OUT_RING  (chan, nv04_surface_format(dst->format) |
	                 log2i(dst->width) << NV04_SWIZZLED_SURFACE_FORMAT_BASE_SIZE_U_SHIFT |
	                 log2i(dst->height) << NV04_SWIZZLED_SURFACE_FORMAT_BASE_SIZE_V_SHIFT);

	BEGIN_RING(chan, sifm, NV03_SCALED_IMAGE_FROM_MEMORY_DMA_IMAGE, 1);
	OUT_RELOCo(chan, src_bo,
	                 NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_RD);
	BEGIN_RING(chan, sifm, NV04_SCALED_IMAGE_FROM_MEMORY_SURFACE, 1);
	OUT_RING  (chan, swzsurf->handle);

	for (y = 0; y < h; y += sub_h) {
	  sub_h = MIN2(sub_h, h - y);

	  for (x = 0; x < w; x += sub_w) {
	    sub_w = MIN2(sub_w, w - x);

	    assert(!(dst->offset & 63));

	    BEGIN_RING(chan, swzsurf, NV04_SWIZZLED_SURFACE_OFFSET, 1);
	    OUT_RELOCl(chan, dst_bo, dst->offset,
                             NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);

	    BEGIN_RING(chan, sifm, NV05_SCALED_IMAGE_FROM_MEMORY_COLOR_CONVERSION, 9);
	    OUT_RING  (chan, NV05_SCALED_IMAGE_FROM_MEMORY_COLOR_CONVERSION_TRUNCATE);
	    OUT_RING  (chan, nv04_scaled_image_format(src->format));
	    OUT_RING  (chan, NV03_SCALED_IMAGE_FROM_MEMORY_OPERATION_SRCCOPY);
	    OUT_RING  (chan, (x + dx) | ((y + dy) << NV03_SCALED_IMAGE_FROM_MEMORY_CLIP_POINT_Y_SHIFT));
	    OUT_RING  (chan, sub_h << NV03_SCALED_IMAGE_FROM_MEMORY_CLIP_SIZE_H_SHIFT | sub_w);
	    OUT_RING  (chan, (x + dx) | ((y + dy) << NV03_SCALED_IMAGE_FROM_MEMORY_OUT_POINT_Y_SHIFT));
	    OUT_RING  (chan, sub_h << NV03_SCALED_IMAGE_FROM_MEMORY_OUT_SIZE_H_SHIFT | sub_w);
	    OUT_RING  (chan, 1 << 20);
	    OUT_RING  (chan, 1 << 20);

	    BEGIN_RING(chan, sifm, NV03_SCALED_IMAGE_FROM_MEMORY_SIZE, 4);
	    OUT_RING  (chan, sub_h << NV03_SCALED_IMAGE_FROM_MEMORY_SIZE_H_SHIFT | sub_w);
	    OUT_RING  (chan, src_pitch |
			     NV03_SCALED_IMAGE_FROM_MEMORY_FORMAT_ORIGIN_CENTER |
			     NV03_SCALED_IMAGE_FROM_MEMORY_FORMAT_FILTER_POINT_SAMPLE);
	    OUT_RELOCl(chan, src_bo, src->offset + (sy+y) * src_pitch + (sx+x) * util_format_get_blocksize(src->texture->format),
                             NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_RD);
	    OUT_RING  (chan, 0);
	  }
	}

	return 0;
}

static int
nv04_surface_copy_m2mf(struct nv04_surface_2d *ctx,
		       struct pipe_surface *dst, int dx, int dy,
		       struct pipe_surface *src, int sx, int sy, int w, int h)
{
	struct nouveau_channel *chan = ctx->m2mf->channel;
	struct nouveau_grobj *m2mf = ctx->m2mf;
	struct nouveau_bo *src_bo = ctx->buf(src);
	struct nouveau_bo *dst_bo = ctx->buf(dst);
	unsigned src_pitch = ((struct nv04_surface *)src)->pitch;
	unsigned dst_pitch = ((struct nv04_surface *)dst)->pitch;
	unsigned dst_offset = dst->offset + dy * dst_pitch +
	                      dx * util_format_get_blocksize(dst->texture->format);
	unsigned src_offset = src->offset + sy * src_pitch +
	                      sx * util_format_get_blocksize(src->texture->format);

	MARK_RING (chan, 3 + ((h / 2047) + 1) * 9, 2 + ((h / 2047) + 1) * 2);
	BEGIN_RING(chan, m2mf, NV04_MEMORY_TO_MEMORY_FORMAT_DMA_BUFFER_IN, 2);
	OUT_RELOCo(chan, src_bo,
		   NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_RD);
	OUT_RELOCo(chan, dst_bo,
		   NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);

	while (h) {
		int count = (h > 2047) ? 2047 : h;

		BEGIN_RING(chan, m2mf, NV04_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
		OUT_RELOCl(chan, src_bo, src_offset,
			   NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD);
		OUT_RELOCl(chan, dst_bo, dst_offset,
			   NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_WR);
		OUT_RING  (chan, src_pitch);
		OUT_RING  (chan, dst_pitch);
		OUT_RING  (chan, w * util_format_get_blocksize(src->texture->format));
		OUT_RING  (chan, count);
		OUT_RING  (chan, 0x0101);
		OUT_RING  (chan, 0);

		h -= count;
		src_offset += src_pitch * count;
		dst_offset += dst_pitch * count;
	}

	return 0;
}

static int
nv04_surface_copy_blit(struct nv04_surface_2d *ctx, struct pipe_surface *dst,
		       int dx, int dy, struct pipe_surface *src, int sx, int sy,
		       int w, int h)
{
	struct nouveau_channel *chan = ctx->surf2d->channel;
	struct nouveau_grobj *surf2d = ctx->surf2d;
	struct nouveau_grobj *blit = ctx->blit;
	struct nouveau_bo *src_bo = ctx->buf(src);
	struct nouveau_bo *dst_bo = ctx->buf(dst);
	unsigned src_pitch = ((struct nv04_surface *)src)->pitch;
	unsigned dst_pitch = ((struct nv04_surface *)dst)->pitch;
	int format;

	format = nv04_surface_format(dst->format);
	if (format < 0)
		return 1;

	MARK_RING (chan, 12, 4);
	BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_DMA_IMAGE_SOURCE, 2);
	OUT_RELOCo(chan, src_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD);
	OUT_RELOCo(chan, dst_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
	BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_FORMAT, 4);
	OUT_RING  (chan, format);
	OUT_RING  (chan, (dst_pitch << 16) | src_pitch);
	OUT_RELOCl(chan, src_bo, src->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD);
	OUT_RELOCl(chan, dst_bo, dst->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);

	BEGIN_RING(chan, blit, 0x0300, 3);
	OUT_RING  (chan, (sy << 16) | sx);
	OUT_RING  (chan, (dy << 16) | dx);
	OUT_RING  (chan, ( h << 16) |  w);

	return 0;
}

static void
nv04_surface_copy(struct nv04_surface_2d *ctx, struct pipe_surface *dst,
		  int dx, int dy, struct pipe_surface *src, int sx, int sy,
		  int w, int h)
{
	int src_linear = src->texture->flags & NVFX_RESOURCE_FLAG_LINEAR;
	int dst_linear = dst->texture->flags & NVFX_RESOURCE_FLAG_LINEAR;

	assert(src->format == dst->format);

	/* Setup transfer to swizzle the texture to vram if needed */
        if (src_linear && !dst_linear && w > 1 && h > 1) {
           nv04_surface_copy_swizzle(ctx, dst, dx, dy, src, sx, sy, w, h);
           return;
        }

        /* Use M2MF instead of the blitter since it always works
         * Any possible performance drop is likely to be not very significant
         * and dwarfed anyway by the current buffer management problems
         */
        nv04_surface_copy_m2mf(ctx, dst, dx, dy, src, sx, sy, w, h);
}

static void
nv04_surface_fill(struct nv04_surface_2d *ctx, struct pipe_surface *dst,
		  int dx, int dy, int w, int h, unsigned value)
{
	struct nouveau_channel *chan = ctx->surf2d->channel;
	struct nouveau_grobj *surf2d = ctx->surf2d;
	struct nouveau_grobj *rect = ctx->rect;
	struct nouveau_bo *dst_bo = ctx->buf(dst);
	unsigned dst_pitch = ((struct nv04_surface *)dst)->pitch;
	int cs2d_format, gdirect_format;

	cs2d_format = nv04_surface_format(dst->format);
	assert(cs2d_format >= 0);

	gdirect_format = nv04_rect_format(dst->format);
	assert(gdirect_format >= 0);

	MARK_RING (chan, 16, 4);
	BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_DMA_IMAGE_SOURCE, 2);
	OUT_RELOCo(chan, dst_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
	OUT_RELOCo(chan, dst_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
	BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_FORMAT, 4);
	OUT_RING  (chan, cs2d_format);
	OUT_RING  (chan, (dst_pitch << 16) | dst_pitch);
	OUT_RELOCl(chan, dst_bo, dst->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
	OUT_RELOCl(chan, dst_bo, dst->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);

	BEGIN_RING(chan, rect, NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT, 1);
	OUT_RING  (chan, gdirect_format);
	BEGIN_RING(chan, rect, NV04_GDI_RECTANGLE_TEXT_COLOR1_A, 1);
	OUT_RING  (chan, value);
	BEGIN_RING(chan, rect,
		   NV04_GDI_RECTANGLE_TEXT_UNCLIPPED_RECTANGLE_POINT(0), 2);
	OUT_RING  (chan, (dx << 16) | dy);
	OUT_RING  (chan, ( w << 16) |  h);
}

void
nv04_surface_2d_takedown(struct nv04_surface_2d **pctx)
{
	struct nv04_surface_2d *ctx;

	if (!pctx || !*pctx)
		return;
	ctx = *pctx;
	*pctx = NULL;

	nouveau_notifier_free(&ctx->ntfy);
	nouveau_grobj_free(&ctx->m2mf);
	nouveau_grobj_free(&ctx->surf2d);
	nouveau_grobj_free(&ctx->swzsurf);
	nouveau_grobj_free(&ctx->rect);
	nouveau_grobj_free(&ctx->blit);
	nouveau_grobj_free(&ctx->sifm);

	FREE(ctx);
}

struct nv04_surface_2d *
nv04_surface_2d_init(struct nouveau_screen *screen)
{
	struct nv04_surface_2d *ctx = CALLOC_STRUCT(nv04_surface_2d);
	struct nouveau_channel *chan = screen->channel;
	unsigned handle = 0x88000000, class;
	int ret;

	if (!ctx)
		return NULL;

	ret = nouveau_notifier_alloc(chan, handle++, 1, &ctx->ntfy);
	if (ret) {
		nv04_surface_2d_takedown(&ctx);
		return NULL;
	}

	ret = nouveau_grobj_alloc(chan, handle++, 0x0039, &ctx->m2mf);
	if (ret) {
		nv04_surface_2d_takedown(&ctx);
		return NULL;
	}

	BEGIN_RING(chan, ctx->m2mf, NV04_MEMORY_TO_MEMORY_FORMAT_DMA_NOTIFY, 1);
	OUT_RING  (chan, ctx->ntfy->handle);

	if (chan->device->chipset < 0x10)
		class = NV04_CONTEXT_SURFACES_2D;
	else
		class = NV10_CONTEXT_SURFACES_2D;

	ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->surf2d);
	if (ret) {
		nv04_surface_2d_takedown(&ctx);
		return NULL;
	}

	BEGIN_RING(chan, ctx->surf2d,
			 NV04_CONTEXT_SURFACES_2D_DMA_IMAGE_SOURCE, 2);
	OUT_RING  (chan, chan->vram->handle);
	OUT_RING  (chan, chan->vram->handle);

	if (chan->device->chipset < 0x10)
		class = NV04_IMAGE_BLIT;
	else
		class = NV12_IMAGE_BLIT;

	ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->blit);
	if (ret) {
		nv04_surface_2d_takedown(&ctx);
		return NULL;
	}

	BEGIN_RING(chan, ctx->blit, NV01_IMAGE_BLIT_DMA_NOTIFY, 1);
	OUT_RING  (chan, ctx->ntfy->handle);
	BEGIN_RING(chan, ctx->blit, NV04_IMAGE_BLIT_SURFACE, 1);
	OUT_RING  (chan, ctx->surf2d->handle);
	BEGIN_RING(chan, ctx->blit, NV01_IMAGE_BLIT_OPERATION, 1);
	OUT_RING  (chan, NV01_IMAGE_BLIT_OPERATION_SRCCOPY);

	ret = nouveau_grobj_alloc(chan, handle++, NV04_GDI_RECTANGLE_TEXT,
				  &ctx->rect);
	if (ret) {
		nv04_surface_2d_takedown(&ctx);
		return NULL;
	}

	BEGIN_RING(chan, ctx->rect, NV04_GDI_RECTANGLE_TEXT_DMA_NOTIFY, 1);
	OUT_RING  (chan, ctx->ntfy->handle);
	BEGIN_RING(chan, ctx->rect, NV04_GDI_RECTANGLE_TEXT_SURFACE, 1);
	OUT_RING  (chan, ctx->surf2d->handle);
	BEGIN_RING(chan, ctx->rect, NV04_GDI_RECTANGLE_TEXT_OPERATION, 1);
	OUT_RING  (chan, NV04_GDI_RECTANGLE_TEXT_OPERATION_SRCCOPY);
	BEGIN_RING(chan, ctx->rect,
			 NV04_GDI_RECTANGLE_TEXT_MONOCHROME_FORMAT, 1);
	OUT_RING  (chan, NV04_GDI_RECTANGLE_TEXT_MONOCHROME_FORMAT_LE);

	switch (chan->device->chipset & 0xf0) {
	case 0x00:
	case 0x10:
		class = NV04_SWIZZLED_SURFACE;
		break;
	case 0x20:
		class = NV20_SWIZZLED_SURFACE;
		break;
	case 0x30:
		class = NV30_SWIZZLED_SURFACE;
		break;
	case 0x40:
	case 0x60:
		class = NV40_SWIZZLED_SURFACE;
		break;
	default:
		/* Famous last words: this really can't happen.. */
		assert(0);
		break;
	}

	ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->swzsurf);
	if (ret) {
		nv04_surface_2d_takedown(&ctx);
		return NULL;
	}

	switch (chan->device->chipset & 0xf0) {
	case 0x10:
	case 0x20:
		class = NV10_SCALED_IMAGE_FROM_MEMORY;
		break;
	case 0x30:
		class = NV30_SCALED_IMAGE_FROM_MEMORY;
		break;
	case 0x40:
	case 0x60:
		class = NV40_SCALED_IMAGE_FROM_MEMORY;
		break;
	default:
		class = NV04_SCALED_IMAGE_FROM_MEMORY;
		break;
	}

	ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->sifm);
	if (ret) {
		nv04_surface_2d_takedown(&ctx);
		return NULL;
	}

	ctx->copy = nv04_surface_copy;
	ctx->fill = nv04_surface_fill;
	return ctx;
}

struct nv04_surface*
nv04_surface_wrap_for_render(struct pipe_screen *pscreen,
			     struct nv04_surface_2d* eng2d, struct nv04_surface* ns)
{
	struct pipe_resource templ;
	struct pipe_resource* temp_tex;
	struct nv04_surface* temp_ns;
	int temp_flags;

	temp_flags = ns->base.usage;

	ns->base.usage = 0;

	memset(&templ, 0, sizeof(templ));
	templ.format = ns->base.texture->format;
	templ.target = PIPE_TEXTURE_2D;
	templ.width0 = ns->base.width;
	templ.height0 = ns->base.height;
	templ.depth0 = 1;
	templ.last_level = 0;

	// TODO: this is probably wrong and we should specifically handle multisampling somehow once it is implemented
	templ.nr_samples = ns->base.texture->nr_samples;

	templ.bind = ns->base.texture->bind | PIPE_BIND_RENDER_TARGET;

	temp_tex = pscreen->resource_create(pscreen, &templ);
	temp_ns = (struct nv04_surface*)pscreen->get_tex_surface(pscreen, temp_tex, 0, 0, 0, temp_flags);
	temp_ns->backing = ns;

	if(1) /* hmm */
		eng2d->copy(eng2d, &temp_ns->backing->base,
			    0, 0, &ns->base,
			    0, 0, ns->base.width, ns->base.height);

	return temp_ns;
}