1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3 /*
4 * Copyright (C) 2012-2013 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 "fd2_texture.h"
35 #include "fd2_util.h"
36
37 static enum sq_tex_clamp
tex_clamp(unsigned wrap)38 tex_clamp(unsigned wrap)
39 {
40 switch (wrap) {
41 case PIPE_TEX_WRAP_REPEAT:
42 return SQ_TEX_WRAP;
43 case PIPE_TEX_WRAP_CLAMP:
44 return SQ_TEX_CLAMP_HALF_BORDER;
45 case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
46 return SQ_TEX_CLAMP_LAST_TEXEL;
47 case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
48 return SQ_TEX_CLAMP_BORDER;
49 case PIPE_TEX_WRAP_MIRROR_REPEAT:
50 return SQ_TEX_MIRROR;
51 case PIPE_TEX_WRAP_MIRROR_CLAMP:
52 return SQ_TEX_MIRROR_ONCE_HALF_BORDER;
53 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
54 return SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
55 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
56 return SQ_TEX_MIRROR_ONCE_BORDER;
57 default:
58 DBG("invalid wrap: %u", wrap);
59 return 0;
60 }
61 }
62
63 static enum sq_tex_filter
tex_filter(unsigned filter)64 tex_filter(unsigned filter)
65 {
66 switch (filter) {
67 case PIPE_TEX_FILTER_NEAREST:
68 return SQ_TEX_FILTER_POINT;
69 case PIPE_TEX_FILTER_LINEAR:
70 return SQ_TEX_FILTER_BILINEAR;
71 default:
72 DBG("invalid filter: %u", filter);
73 return 0;
74 }
75 }
76
77 static void *
fd2_sampler_state_create(struct pipe_context * pctx,const struct pipe_sampler_state * cso)78 fd2_sampler_state_create(struct pipe_context *pctx,
79 const struct pipe_sampler_state *cso)
80 {
81 struct fd2_sampler_stateobj *so = CALLOC_STRUCT(fd2_sampler_stateobj);
82
83 if (!so)
84 return NULL;
85
86 so->base = *cso;
87
88 /* SQ_TEX0_PITCH() must be OR'd in later when we know the bound texture: */
89 so->tex0 =
90 A2XX_SQ_TEX_0_CLAMP_X(tex_clamp(cso->wrap_s)) |
91 A2XX_SQ_TEX_0_CLAMP_Y(tex_clamp(cso->wrap_t)) |
92 A2XX_SQ_TEX_0_CLAMP_Z(tex_clamp(cso->wrap_r));
93
94 so->tex3 =
95 A2XX_SQ_TEX_3_XY_MAG_FILTER(tex_filter(cso->mag_img_filter)) |
96 A2XX_SQ_TEX_3_XY_MIN_FILTER(tex_filter(cso->min_img_filter));
97
98 so->tex4 = 0x00000000; /* ??? */
99 so->tex5 = 0x00000200; /* ??? */
100
101 return so;
102 }
103
104 static void
fd2_sampler_states_bind(struct pipe_context * pctx,enum pipe_shader_type shader,unsigned start,unsigned nr,void ** hwcso)105 fd2_sampler_states_bind(struct pipe_context *pctx,
106 enum pipe_shader_type shader, unsigned start,
107 unsigned nr, void **hwcso)
108 {
109 if (!hwcso)
110 nr = 0;
111
112 if (shader == PIPE_SHADER_FRAGMENT) {
113 struct fd_context *ctx = fd_context(pctx);
114
115 /* on a2xx, since there is a flat address space for textures/samplers,
116 * a change in # of fragment textures/samplers will trigger patching and
117 * re-emitting the vertex shader:
118 */
119 if (nr != ctx->fragtex.num_samplers)
120 ctx->dirty |= FD_DIRTY_TEXSTATE;
121 }
122
123 fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
124 }
125
126 static struct pipe_sampler_view *
fd2_sampler_view_create(struct pipe_context * pctx,struct pipe_resource * prsc,const struct pipe_sampler_view * cso)127 fd2_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
128 const struct pipe_sampler_view *cso)
129 {
130 struct fd2_pipe_sampler_view *so = CALLOC_STRUCT(fd2_pipe_sampler_view);
131 struct fd_resource *rsc = fd_resource(prsc);
132
133 if (!so)
134 return NULL;
135
136 so->base = *cso;
137 pipe_reference(NULL, &prsc->reference);
138 so->base.texture = prsc;
139 so->base.reference.count = 1;
140 so->base.context = pctx;
141
142 so->fmt = fd2_pipe2surface(cso->format);
143
144 so->tex0 = A2XX_SQ_TEX_0_PITCH(rsc->slices[0].pitch);
145 so->tex2 =
146 A2XX_SQ_TEX_2_HEIGHT(prsc->height0 - 1) |
147 A2XX_SQ_TEX_2_WIDTH(prsc->width0 - 1);
148 so->tex3 = fd2_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
149 cso->swizzle_b, cso->swizzle_a);
150
151 return &so->base;
152 }
153
154 /* map gallium sampler-id to hw const-idx.. adreno uses a flat address
155 * space of samplers (const-idx), so we need to map the gallium sampler-id
156 * which is per-shader to a global const-idx space.
157 *
158 * Fragment shader sampler maps directly to const-idx, and vertex shader
159 * is offset by the # of fragment shader samplers. If the # of fragment
160 * shader samplers changes, this shifts the vertex shader indexes.
161 *
162 * TODO maybe we can do frag shader 0..N and vert shader N..0 to avoid
163 * this??
164 */
165 unsigned
fd2_get_const_idx(struct fd_context * ctx,struct fd_texture_stateobj * tex,unsigned samp_id)166 fd2_get_const_idx(struct fd_context *ctx, struct fd_texture_stateobj *tex,
167 unsigned samp_id)
168 {
169 if (tex == &ctx->fragtex)
170 return samp_id;
171 return samp_id + ctx->fragtex.num_samplers;
172 }
173
174 void
fd2_texture_init(struct pipe_context * pctx)175 fd2_texture_init(struct pipe_context *pctx)
176 {
177 pctx->create_sampler_state = fd2_sampler_state_create;
178 pctx->bind_sampler_states = fd2_sampler_states_bind;
179 pctx->create_sampler_view = fd2_sampler_view_create;
180 pctx->set_sampler_views = fd_set_sampler_views;
181 }
182