nv30_miptree.c revision 3ca933623cf0fd3b025ab7d1b37d3fd01c854807 
1#include "pipe/p_state.h"
2#include "pipe/p_defines.h"
3#include "util/u_inlines.h"
4#include "util/u_format.h"
5#include "util/u_math.h"
6
7#include "nv30_context.h"
8#include "../nouveau/nv04_surface_2d.h"
9
10static void
11nv30_miptree_layout(struct nv30_miptree *nv30mt)
12{
13	struct pipe_texture *pt = &nv30mt->base;
14	uint width = pt->width0;
15	uint offset = 0;
16	int nr_faces, l, f;
17	uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
18		                           PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
19		                           PIPE_TEXTURE_USAGE_RENDER_TARGET |
20		                           PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
21		                           PIPE_TEXTURE_USAGE_SCANOUT);
22
23	if (pt->target == PIPE_TEXTURE_CUBE) {
24		nr_faces = 6;
25	} else
26	if (pt->target == PIPE_TEXTURE_3D) {
27		nr_faces = pt->depth0;
28	} else {
29		nr_faces = 1;
30	}
31
32	for (l = 0; l <= pt->last_level; l++) {
33		if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
34			nv30mt->level[l].pitch = align(util_format_get_stride(pt->format, pt->width0), 64);
35		else
36			nv30mt->level[l].pitch = util_format_get_stride(pt->format, width);
37
38		nv30mt->level[l].image_offset =
39			CALLOC(nr_faces, sizeof(unsigned));
40
41		width  = u_minify(width, 1);
42	}
43
44	for (f = 0; f < nr_faces; f++) {
45		for (l = 0; l < pt->last_level; l++) {
46			nv30mt->level[l].image_offset[f] = offset;
47
48			if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
49			    u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
50				offset += align(nv30mt->level[l].pitch * u_minify(pt->height0, l), 64);
51			else
52				offset += nv30mt->level[l].pitch * u_minify(pt->height0, l);
53		}
54
55		nv30mt->level[l].image_offset[f] = offset;
56		offset += nv30mt->level[l].pitch * u_minify(pt->height0, l);
57	}
58
59	nv30mt->total_size = offset;
60}
61
62static struct pipe_texture *
63nv30_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
64{
65	struct nv30_miptree *mt;
66	unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
67	                     NOUVEAU_BUFFER_USAGE_TEXTURE;
68
69	mt = MALLOC(sizeof(struct nv30_miptree));
70	if (!mt)
71		return NULL;
72	mt->base = *pt;
73	pipe_reference_init(&mt->base.reference, 1);
74	mt->base.screen = pscreen;
75
76	/* Swizzled textures must be POT */
77	if (pt->width0 & (pt->width0 - 1) ||
78	    pt->height0 & (pt->height0 - 1))
79		mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
80	else
81	if (pt->tex_usage & (PIPE_TEXTURE_USAGE_SCANOUT |
82	                     PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
83	                     PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
84		mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
85	else
86	if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
87		mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
88	else {
89		switch (pt->format) {
90		/* TODO: Figure out which formats can be swizzled */
91		case PIPE_FORMAT_B8G8R8A8_UNORM:
92		case PIPE_FORMAT_B8G8R8X8_UNORM:
93		case PIPE_FORMAT_R16_SNORM:
94		case PIPE_FORMAT_B5G6R5_UNORM:
95		case PIPE_FORMAT_L8A8_UNORM:
96		case PIPE_FORMAT_A8_UNORM:
97		case PIPE_FORMAT_L8_UNORM:
98		case PIPE_FORMAT_I8_UNORM:
99		{
100			if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
101				mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
102 			break;
103		}
104		default:
105			mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
106		}
107	}
108
109	if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
110		buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
111
112	/* apparently we can't render to swizzled surfaces smaller than 64 bytes, so make them linear.
113	 * If the user did not ask for a render target, they can still render to it, but it will cost them an extra copy.
114	 * This also happens for small mipmaps of large textures. */
115	if (pt->tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET && util_format_get_stride(pt->format, pt->width0) < 64)
116		mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
117
118	nv30_miptree_layout(mt);
119
120	mt->buffer = pscreen->buffer_create(pscreen, 256, buf_usage,
121				       mt->total_size);
122	if (!mt->buffer) {
123		FREE(mt);
124		return NULL;
125	}
126	mt->bo = nouveau_bo(mt->buffer);
127
128	return &mt->base;
129}
130
131static struct pipe_texture *
132nv30_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
133		     const unsigned *stride, struct pipe_buffer *pb)
134{
135	struct nv30_miptree *mt;
136
137	/* Only supports 2D, non-mipmapped textures for the moment */
138	if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
139	    pt->depth0 != 1)
140		return NULL;
141
142	mt = CALLOC_STRUCT(nv30_miptree);
143	if (!mt)
144		return NULL;
145
146	mt->base = *pt;
147	pipe_reference_init(&mt->base.reference, 1);
148	mt->base.screen = pscreen;
149	mt->level[0].pitch = stride[0];
150	mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
151
152	/* Assume whoever created this buffer expects it to be linear for now */
153	mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
154
155	pipe_buffer_reference(&mt->buffer, pb);
156	mt->bo = nouveau_bo(mt->buffer);
157	return &mt->base;
158}
159
160static void
161nv30_miptree_destroy(struct pipe_texture *pt)
162{
163	struct nv30_miptree *mt = (struct nv30_miptree *)pt;
164	int l;
165
166	pipe_buffer_reference(&mt->buffer, NULL);
167	for (l = 0; l <= pt->last_level; l++) {
168		if (mt->level[l].image_offset)
169			FREE(mt->level[l].image_offset);
170	}
171
172	FREE(mt);
173}
174
175static struct pipe_surface *
176nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
177			 unsigned face, unsigned level, unsigned zslice,
178			 unsigned flags)
179{
180	struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
181	struct nv04_surface *ns;
182
183	ns = CALLOC_STRUCT(nv04_surface);
184	if (!ns)
185		return NULL;
186	pipe_texture_reference(&ns->base.texture, pt);
187	ns->base.format = pt->format;
188	ns->base.width = u_minify(pt->width0, level);
189	ns->base.height = u_minify(pt->height0, level);
190	ns->base.usage = flags;
191	pipe_reference_init(&ns->base.reference, 1);
192	ns->base.face = face;
193	ns->base.level = level;
194	ns->base.zslice = zslice;
195	ns->pitch = nv30mt->level[level].pitch;
196
197	if (pt->target == PIPE_TEXTURE_CUBE) {
198		ns->base.offset = nv30mt->level[level].image_offset[face];
199	} else
200	if (pt->target == PIPE_TEXTURE_3D) {
201		ns->base.offset = nv30mt->level[level].image_offset[zslice];
202	} else {
203		ns->base.offset = nv30mt->level[level].image_offset[0];
204	}
205
206	/* create a linear temporary that we can render into if necessary.
207	 * Note that ns->pitch is always a multiple of 64 for linear surfaces and swizzled surfaces are POT, so
208	 * ns->pitch & 63 is equivalent to (ns->pitch < 64 && swizzled)*/
209	if((ns->pitch & 63) && (ns->base.usage & (PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER)) == PIPE_BUFFER_USAGE_GPU_WRITE)
210		return &nv04_surface_wrap_for_render(pscreen, ((struct nv30_screen*)pscreen)->eng2d, ns)->base;
211
212	return &ns->base;
213}
214
215static void
216nv30_miptree_surface_del(struct pipe_surface *ps)
217{
218	struct nv04_surface* ns = (struct nv04_surface*)ps;
219	if(ns->backing)
220	{
221		struct nv30_screen* screen = (struct nv30_screen*)ps->texture->screen;
222		if(ns->backing->base.usage & PIPE_BUFFER_USAGE_GPU_WRITE)
223			screen->eng2d->copy(screen->eng2d, &ns->backing->base, 0, 0, ps, 0, 0, ns->base.width, ns->base.height);
224		nv30_miptree_surface_del(&ns->backing->base);
225	}
226
227	pipe_texture_reference(&ps->texture, NULL);
228	FREE(ps);
229}
230
231void
232nv30_screen_init_miptree_functions(struct pipe_screen *pscreen)
233{
234	pscreen->texture_create = nv30_miptree_create;
235	pscreen->texture_blanket = nv30_miptree_blanket;
236	pscreen->texture_destroy = nv30_miptree_destroy;
237	pscreen->get_tex_surface = nv30_miptree_surface_new;
238	pscreen->tex_surface_destroy = nv30_miptree_surface_del;
239}
240