freedreno_texture.c revision 01e04c3f 
1/*
2 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
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 (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 *    Rob Clark <robclark@freedesktop.org>
25 */
26
27#include "pipe/p_state.h"
28#include "util/u_string.h"
29#include "util/u_memory.h"
30#include "util/u_inlines.h"
31
32#include "freedreno_texture.h"
33#include "freedreno_context.h"
34#include "freedreno_resource.h"
35#include "freedreno_util.h"
36
37static void
38fd_sampler_state_delete(struct pipe_context *pctx, void *hwcso)
39{
40	FREE(hwcso);
41}
42
43static void
44fd_sampler_view_destroy(struct pipe_context *pctx,
45		struct pipe_sampler_view *view)
46{
47	pipe_resource_reference(&view->texture, NULL);
48	FREE(view);
49}
50
51static void bind_sampler_states(struct fd_texture_stateobj *tex,
52		unsigned start, unsigned nr, void **hwcso)
53{
54	unsigned i;
55
56	for (i = 0; i < nr; i++) {
57		unsigned p = i + start;
58		tex->samplers[p] = hwcso[i];
59		if (tex->samplers[p])
60			tex->valid_samplers |= (1 << p);
61		else
62			tex->valid_samplers &= ~(1 << p);
63	}
64
65	tex->num_samplers = util_last_bit(tex->valid_samplers);
66}
67
68static void set_sampler_views(struct fd_texture_stateobj *tex,
69		unsigned start, unsigned nr, struct pipe_sampler_view **views)
70{
71	unsigned i;
72	unsigned samplers = 0;
73
74	for (i = 0; i < nr; i++) {
75		struct pipe_sampler_view *view = views ? views[i] : NULL;
76		unsigned p = i + start;
77		pipe_sampler_view_reference(&tex->textures[p], view);
78		if (tex->textures[p])
79			tex->valid_textures |= (1 << p);
80		else
81			tex->valid_textures &= ~(1 << p);
82	}
83
84	tex->num_textures = util_last_bit(tex->valid_textures);
85
86	for (i = 0; i < tex->num_textures; i++) {
87		uint nr_samples = fd_resource_nr_samples(tex->textures[i]->texture);
88		samplers |= (nr_samples >> 1) << (i * 2);
89	}
90
91	tex->samples = samplers;
92}
93
94void
95fd_sampler_states_bind(struct pipe_context *pctx,
96		enum pipe_shader_type shader, unsigned start,
97		unsigned nr, void **hwcso)
98{
99	struct fd_context *ctx = fd_context(pctx);
100
101	bind_sampler_states(&ctx->tex[shader], start, nr, hwcso);
102	ctx->dirty_shader[shader] |= FD_DIRTY_SHADER_TEX;
103	ctx->dirty |= FD_DIRTY_TEX;
104}
105
106void
107fd_set_sampler_views(struct pipe_context *pctx, enum pipe_shader_type shader,
108		unsigned start, unsigned nr,
109		struct pipe_sampler_view **views)
110{
111	struct fd_context *ctx = fd_context(pctx);
112
113	set_sampler_views(&ctx->tex[shader], start, nr, views);
114	ctx->dirty_shader[shader] |= FD_DIRTY_SHADER_TEX;
115	ctx->dirty |= FD_DIRTY_TEX;
116}
117
118void
119fd_texture_init(struct pipe_context *pctx)
120{
121	if (!pctx->delete_sampler_state)
122		pctx->delete_sampler_state = fd_sampler_state_delete;
123	if (!pctx->sampler_view_destroy)
124		pctx->sampler_view_destroy = fd_sampler_view_destroy;
125}
126
127/* helper for setting up border-color buffer for a3xx/a4xx: */
128void
129fd_setup_border_colors(struct fd_texture_stateobj *tex, void *ptr,
130		unsigned offset)
131{
132	unsigned i, j;
133
134	for (i = 0; i < tex->num_samplers; i++) {
135		struct pipe_sampler_state *sampler = tex->samplers[i];
136		uint16_t *bcolor = (uint16_t *)((uint8_t *)ptr +
137				(BORDERCOLOR_SIZE * offset) +
138				(BORDERCOLOR_SIZE * i));
139		uint32_t *bcolor32 = (uint32_t *)&bcolor[16];
140
141		if (!sampler)
142			continue;
143
144		/*
145		 * XXX HACK ALERT XXX
146		 *
147		 * The border colors need to be swizzled in a particular
148		 * format-dependent order. Even though samplers don't know about
149		 * formats, we can assume that with a GL state tracker, there's a
150		 * 1:1 correspondence between sampler and texture. Take advantage
151		 * of that knowledge.
152		 */
153		if (i < tex->num_textures && tex->textures[i]) {
154			const struct util_format_description *desc =
155					util_format_description(tex->textures[i]->format);
156			for (j = 0; j < 4; j++) {
157				if (desc->swizzle[j] >= 4)
158					continue;
159
160				const struct util_format_channel_description *chan =
161					&desc->channel[desc->swizzle[j]];
162				if (chan->pure_integer) {
163					bcolor32[desc->swizzle[j] + 4] = sampler->border_color.i[j];
164					bcolor[desc->swizzle[j] + 8] = sampler->border_color.i[j];
165				} else {
166					bcolor32[desc->swizzle[j]] = fui(sampler->border_color.f[j]);
167					bcolor[desc->swizzle[j]] =
168						util_float_to_half(sampler->border_color.f[j]);
169				}
170			}
171		}
172	}
173}
174