freedreno_texture.c revision d4ff42bd0a80acfac080507e4e14f33f0b3bffbb 
1/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3/*
4 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Authors:
26 *    Rob Clark <robclark@freedesktop.org>
27 */
28
29#include "pipe/p_state.h"
30#include "util/u_string.h"
31#include "util/u_memory.h"
32#include "util/u_inlines.h"
33
34#include "freedreno_texture.h"
35#include "freedreno_context.h"
36#include "freedreno_util.h"
37
38static void
39fd_sampler_state_delete(struct pipe_context *pctx, void *hwcso)
40{
41	FREE(hwcso);
42}
43
44static void
45fd_sampler_view_destroy(struct pipe_context *pctx,
46		struct pipe_sampler_view *view)
47{
48	pipe_resource_reference(&view->texture, NULL);
49	FREE(view);
50}
51
52static void bind_sampler_states(struct fd_texture_stateobj *tex,
53		unsigned nr, void **hwcso)
54{
55	unsigned i;
56	unsigned new_nr = 0;
57
58	for (i = 0; i < nr; i++) {
59		if (hwcso[i])
60			new_nr = i + 1;
61		tex->samplers[i] = hwcso[i];
62		tex->dirty_samplers |= (1 << i);
63	}
64
65	for (; i < tex->num_samplers; i++) {
66		tex->samplers[i] = NULL;
67		tex->dirty_samplers |= (1 << i);
68	}
69
70	tex->num_samplers = new_nr;
71}
72
73static void set_sampler_views(struct fd_texture_stateobj *tex,
74		unsigned nr, struct pipe_sampler_view **views)
75{
76	unsigned i;
77	unsigned new_nr = 0;
78
79	for (i = 0; i < nr; i++) {
80		if (views[i])
81			new_nr = i + 1;
82		pipe_sampler_view_reference(&tex->textures[i], views[i]);
83		tex->dirty_samplers |= (1 << i);
84	}
85
86	for (; i < tex->num_textures; i++) {
87		pipe_sampler_view_reference(&tex->textures[i], NULL);
88		tex->dirty_samplers |= (1 << i);
89	}
90
91	tex->num_textures = new_nr;
92}
93
94void
95fd_sampler_states_bind(struct pipe_context *pctx,
96		unsigned shader, unsigned start,
97		unsigned nr, void **hwcso)
98{
99	struct fd_context *ctx = fd_context(pctx);
100
101	assert(start == 0);
102
103	if (shader == PIPE_SHADER_FRAGMENT) {
104		bind_sampler_states(&ctx->fragtex, nr, hwcso);
105		ctx->dirty |= FD_DIRTY_FRAGTEX;
106	}
107	else if (shader == PIPE_SHADER_VERTEX) {
108		bind_sampler_states(&ctx->verttex, nr, hwcso);
109		ctx->dirty |= FD_DIRTY_VERTTEX;
110	}
111}
112
113void
114fd_set_sampler_views(struct pipe_context *pctx, unsigned shader,
115		unsigned start, unsigned nr,
116		struct pipe_sampler_view **views)
117{
118	struct fd_context *ctx = fd_context(pctx);
119
120	assert(start == 0);
121
122	switch (shader) {
123	case PIPE_SHADER_FRAGMENT:
124		/* on a2xx, since there is a flat address space for textures/samplers,
125		 * a change in # of fragment textures/samplers will trigger patching
126		 * and re-emitting the vertex shader:
127		 *
128		 * (note: later gen's ignore FD_DIRTY_TEXSTATE so fine to set it)
129		 */
130		if (nr != ctx->fragtex.num_textures)
131			ctx->dirty |= FD_DIRTY_TEXSTATE;
132
133		set_sampler_views(&ctx->fragtex, nr, views);
134		ctx->dirty |= FD_DIRTY_FRAGTEX;
135		break;
136	case PIPE_SHADER_VERTEX:
137		set_sampler_views(&ctx->verttex, nr, views);
138		ctx->dirty |= FD_DIRTY_VERTTEX;
139		break;
140	default:
141		break;
142	}
143}
144
145void
146fd_texture_init(struct pipe_context *pctx)
147{
148	pctx->delete_sampler_state = fd_sampler_state_delete;
149
150	pctx->sampler_view_destroy = fd_sampler_view_destroy;
151}
152
153/* helper for setting up border-color buffer for a3xx/a4xx: */
154void
155fd_setup_border_colors(struct fd_texture_stateobj *tex, void *ptr,
156		unsigned offset)
157{
158	unsigned i, j;
159
160	for (i = 0; i < tex->num_samplers; i++) {
161		struct pipe_sampler_state *sampler = tex->samplers[i];
162		uint16_t *bcolor = (uint16_t *)((uint8_t *)ptr +
163				(BORDERCOLOR_SIZE * offset) +
164				(BORDERCOLOR_SIZE * i));
165		uint32_t *bcolor32 = (uint32_t *)&bcolor[16];
166
167		if (!sampler)
168			continue;
169
170		/*
171		 * XXX HACK ALERT XXX
172		 *
173		 * The border colors need to be swizzled in a particular
174		 * format-dependent order. Even though samplers don't know about
175		 * formats, we can assume that with a GL state tracker, there's a
176		 * 1:1 correspondence between sampler and texture. Take advantage
177		 * of that knowledge.
178		 */
179		if (i < tex->num_textures && tex->textures[i]) {
180			const struct util_format_description *desc =
181					util_format_description(tex->textures[i]->format);
182			for (j = 0; j < 4; j++) {
183				if (desc->swizzle[j] >= 4)
184					continue;
185
186				const struct util_format_channel_description *chan =
187					&desc->channel[desc->swizzle[j]];
188				if (chan->pure_integer) {
189					bcolor32[desc->swizzle[j] + 4] = sampler->border_color.i[j];
190					bcolor[desc->swizzle[j] + 8] = sampler->border_color.i[j];
191				} else {
192					bcolor32[desc->swizzle[j]] = fui(sampler->border_color.f[j]);
193					bcolor[desc->swizzle[j]] =
194						util_float_to_half(sampler->border_color.f[j]);
195				}
196			}
197		}
198	}
199}
200