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
|
/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "pipe/p_util.h"
#include "i915_state_inlines.h"
#include "i915_context.h"
#include "i915_reg.h"
#include "i915_state.h"
/**
* Compute i915 texture sampling state.
*
* Recalculate all state from scratch. Perhaps not the most
* efficient, but this has gotten complex enough that we need
* something which is understandable and reliable.
* \param state returns the 3 words of compute state
*/
static void update_sampler(struct i915_context *i915,
uint unit,
const struct i915_sampler_state *sampler,
const struct i915_texture *tex,
unsigned state[3] )
{
const struct pipe_texture *pt = &tex->base;
/* Need to do this after updating the maps, which call the
* intel_finalize_mipmap_tree and hence can update firstLevel:
*/
state[0] = sampler->state[0];
state[1] = sampler->state[1];
state[2] = sampler->state[2];
if (pt->format == PIPE_FORMAT_YCBCR ||
pt->format == PIPE_FORMAT_YCBCR_REV)
state[0] |= SS2_COLORSPACE_CONVERSION;
/* 3D textures don't seem to respect the border color.
* Fallback if there's ever a danger that they might refer to
* it.
*
* Effectively this means fallback on 3D clamp or
* clamp_to_border.
*
* XXX: Check if this is true on i945.
* XXX: Check if this bug got fixed in release silicon.
*/
#if 0
{
const unsigned ws = sampler->templ->wrap_s;
const unsigned wt = sampler->templ->wrap_t;
const unsigned wr = sampler->templ->wrap_r;
if (pt->target == PIPE_TEXTURE_3D &&
(sampler->templ->min_img_filter != PIPE_TEX_FILTER_NEAREST ||
sampler->templ->mag_img_filter != PIPE_TEX_FILTER_NEAREST) &&
(ws == PIPE_TEX_WRAP_CLAMP ||
wt == PIPE_TEX_WRAP_CLAMP ||
wr == PIPE_TEX_WRAP_CLAMP ||
ws == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
wt == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
wr == PIPE_TEX_WRAP_CLAMP_TO_BORDER)) {
if (i915->strict_conformance) {
assert(0);
/* sampler->fallback = true; */
/* TODO */
}
}
}
#endif
state[1] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
}
void i915_update_samplers( struct i915_context *i915 )
{
uint unit;
i915->current.sampler_enable_nr = 0;
i915->current.sampler_enable_flags = 0x0;
for (unit = 0; unit < i915->num_textures && unit < i915->num_samplers;
unit++) {
/* determine unit enable/disable by looking for a bound texture */
/* could also examine the fragment program? */
if (i915->texture[unit]) {
update_sampler( i915,
unit,
i915->sampler[unit], /* sampler state */
i915->texture[unit], /* texture */
i915->current.sampler[unit] /* the result */
);
i915->current.sampler_enable_nr++;
i915->current.sampler_enable_flags |= (1 << unit);
}
}
i915->hardware_dirty |= I915_HW_SAMPLER;
}
static uint
translate_texture_format(enum pipe_format pipeFormat)
{
switch (pipeFormat) {
case PIPE_FORMAT_U_L8:
return MAPSURF_8BIT | MT_8BIT_L8;
case PIPE_FORMAT_U_I8:
return MAPSURF_8BIT | MT_8BIT_I8;
case PIPE_FORMAT_U_A8:
return MAPSURF_8BIT | MT_8BIT_A8;
case PIPE_FORMAT_U_A8_L8:
return MAPSURF_16BIT | MT_16BIT_AY88;
case PIPE_FORMAT_R5G6B5_UNORM:
return MAPSURF_16BIT | MT_16BIT_RGB565;
case PIPE_FORMAT_A1R5G5B5_UNORM:
return MAPSURF_16BIT | MT_16BIT_ARGB1555;
case PIPE_FORMAT_A4R4G4B4_UNORM:
return MAPSURF_16BIT | MT_16BIT_ARGB4444;
case PIPE_FORMAT_A8R8G8B8_UNORM:
return MAPSURF_32BIT | MT_32BIT_ARGB8888;
case PIPE_FORMAT_YCBCR_REV:
return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
case PIPE_FORMAT_YCBCR:
return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
#if 0
case PIPE_FORMAT_RGB_FXT1:
case PIPE_FORMAT_RGBA_FXT1:
return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
#endif
case PIPE_FORMAT_Z16_UNORM:
return (MAPSURF_16BIT | MT_16BIT_L16);
#if 0
case PIPE_FORMAT_RGBA_DXT1:
case PIPE_FORMAT_RGB_DXT1:
return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
case PIPE_FORMAT_RGBA_DXT3:
return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
case PIPE_FORMAT_RGBA_DXT5:
return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
#endif
case PIPE_FORMAT_S8Z24_UNORM:
return (MAPSURF_32BIT | MT_32BIT_xL824);
default:
debug_printf("i915: translate_texture_format() bad image format %x\n",
pipeFormat);
assert(0);
return 0;
}
}
static void
i915_update_texture(struct i915_context *i915, uint unit,
uint state[6])
{
const struct i915_texture *tex = i915->texture[unit];
const struct pipe_texture *pt = &tex->base;
uint format, pitch;
const uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
const uint num_levels = pt->last_level;
assert(tex);
assert(width);
assert(height);
assert(depth);
format = translate_texture_format(pt->format);
pitch = tex->pitch * pt->cpp;
assert(format);
assert(pitch);
/* MS3 state */
state[0] =
(((height - 1) << MS3_HEIGHT_SHIFT)
| ((width - 1) << MS3_WIDTH_SHIFT)
| format
| MS3_USE_FENCE_REGS);
/*
* XXX sampler->max_lod should be used to program the MAX_LOD field below.
* Also, when min_filter != mag_filter and there's just one mipmap level,
* set max_lod = 1 to make sure i915 chooses between min/mag filtering.
*/
/* MS4 state */
state[1] =
((((pitch / 4) - 1) << MS4_PITCH_SHIFT)
| MS4_CUBE_FACE_ENA_MASK
| ((num_levels * 4) << MS4_MAX_LOD_SHIFT)
| ((depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
}
void
i915_update_textures(struct i915_context *i915)
{
uint unit;
for (unit = 0; unit < i915->num_textures && unit < i915->num_samplers;
unit++) {
/* determine unit enable/disable by looking for a bound texture */
/* could also examine the fragment program? */
if (i915->texture[unit]) {
i915_update_texture(i915, unit, i915->current.texbuffer[unit]);
}
}
i915->hardware_dirty |= I915_HW_MAP;
}
|
