1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "pipe/p_context.h"
29 #include "pipe/p_state.h"
30 #include "util/u_memory.h"
32 #include "i915_state_inlines.h"
33 #include "i915_context.h"
35 #include "i915_state.h"
39 * A note about min_lod & max_lod.
41 * There is a circular dependancy between the sampler state
42 * and the map state to be submitted to hw.
44 * Two condition must be meet:
45 * min_lod =< max_lod == true
46 * max_lod =< last_level == true
49 * This is all fine and dandy if it where for the fact that max_lod
50 * is set on the map state instead of the sampler state. That is
51 * the max_lod we submit on map is:
52 * max_lod = MIN2(last_level, max_lod);
54 * So we need to update the map state when we change samplers and
55 * we need to be change the sampler state when map state is changed.
56 * The first part is done by calling i915_update_texture in
57 * i915_update_samplers and the second part is done else where in
58 * code tracking the state changes.
62 i915_update_texture(struct i915_context
*i915
,
64 const struct i915_texture
*tex
,
65 const struct i915_sampler_state
*sampler
,
68 * Compute i915 texture sampling state.
70 * Recalculate all state from scratch. Perhaps not the most
71 * efficient, but this has gotten complex enough that we need
72 * something which is understandable and reliable.
73 * \param state returns the 3 words of compute state
75 static void update_sampler(struct i915_context
*i915
,
77 const struct i915_sampler_state
*sampler
,
78 const struct i915_texture
*tex
,
81 const struct pipe_texture
*pt
= &tex
->base
;
82 unsigned minlod
, lastlod
;
84 /* Need to do this after updating the maps, which call the
85 * intel_finalize_mipmap_tree and hence can update firstLevel:
87 state
[0] = sampler
->state
[0];
88 state
[1] = sampler
->state
[1];
89 state
[2] = sampler
->state
[2];
91 if (pt
->format
== PIPE_FORMAT_YCBCR
||
92 pt
->format
== PIPE_FORMAT_YCBCR_REV
)
93 state
[0] |= SS2_COLORSPACE_CONVERSION
;
95 /* 3D textures don't seem to respect the border color.
96 * Fallback if there's ever a danger that they might refer to
99 * Effectively this means fallback on 3D clamp or
102 * XXX: Check if this is true on i945.
103 * XXX: Check if this bug got fixed in release silicon.
107 const unsigned ws
= sampler
->templ
->wrap_s
;
108 const unsigned wt
= sampler
->templ
->wrap_t
;
109 const unsigned wr
= sampler
->templ
->wrap_r
;
110 if (pt
->target
== PIPE_TEXTURE_3D
&&
111 (sampler
->templ
->min_img_filter
!= PIPE_TEX_FILTER_NEAREST
||
112 sampler
->templ
->mag_img_filter
!= PIPE_TEX_FILTER_NEAREST
) &&
113 (ws
== PIPE_TEX_WRAP_CLAMP
||
114 wt
== PIPE_TEX_WRAP_CLAMP
||
115 wr
== PIPE_TEX_WRAP_CLAMP
||
116 ws
== PIPE_TEX_WRAP_CLAMP_TO_BORDER
||
117 wt
== PIPE_TEX_WRAP_CLAMP_TO_BORDER
||
118 wr
== PIPE_TEX_WRAP_CLAMP_TO_BORDER
)) {
119 if (i915
->conformance_mode
> 0) {
121 /* sampler->fallback = true; */
128 /* See note at the top of file */
129 minlod
= sampler
->minlod
;
130 lastlod
= pt
->last_level
<< 4;
132 if (lastlod
< minlod
) {
136 state
[1] |= (sampler
->minlod
<< SS3_MIN_LOD_SHIFT
);
137 state
[1] |= (unit
<< SS3_TEXTUREMAP_INDEX_SHIFT
);
141 void i915_update_samplers( struct i915_context
*i915
)
145 i915
->current
.sampler_enable_nr
= 0;
146 i915
->current
.sampler_enable_flags
= 0x0;
148 for (unit
= 0; unit
< i915
->num_textures
&& unit
< i915
->num_samplers
;
150 /* determine unit enable/disable by looking for a bound texture */
151 /* could also examine the fragment program? */
152 if (i915
->texture
[unit
]) {
153 update_sampler( i915
,
155 i915
->sampler
[unit
], /* sampler state */
156 i915
->texture
[unit
], /* texture */
157 i915
->current
.sampler
[unit
] /* the result */
159 i915_update_texture( i915
,
161 i915
->texture
[unit
], /* texture */
162 i915
->sampler
[unit
], /* sampler state */
163 i915
->current
.texbuffer
[unit
] );
165 i915
->current
.sampler_enable_nr
++;
166 i915
->current
.sampler_enable_flags
|= (1 << unit
);
170 i915
->hardware_dirty
|= I915_HW_SAMPLER
| I915_HW_MAP
;
175 translate_texture_format(enum pipe_format pipeFormat
)
177 switch (pipeFormat
) {
178 case PIPE_FORMAT_L8_UNORM
:
179 return MAPSURF_8BIT
| MT_8BIT_L8
;
180 case PIPE_FORMAT_I8_UNORM
:
181 return MAPSURF_8BIT
| MT_8BIT_I8
;
182 case PIPE_FORMAT_A8_UNORM
:
183 return MAPSURF_8BIT
| MT_8BIT_A8
;
184 case PIPE_FORMAT_A8L8_UNORM
:
185 return MAPSURF_16BIT
| MT_16BIT_AY88
;
186 case PIPE_FORMAT_R5G6B5_UNORM
:
187 return MAPSURF_16BIT
| MT_16BIT_RGB565
;
188 case PIPE_FORMAT_A1R5G5B5_UNORM
:
189 return MAPSURF_16BIT
| MT_16BIT_ARGB1555
;
190 case PIPE_FORMAT_A4R4G4B4_UNORM
:
191 return MAPSURF_16BIT
| MT_16BIT_ARGB4444
;
192 case PIPE_FORMAT_A8R8G8B8_UNORM
:
193 return MAPSURF_32BIT
| MT_32BIT_ARGB8888
;
194 case PIPE_FORMAT_YCBCR_REV
:
195 return (MAPSURF_422
| MT_422_YCRCB_NORMAL
);
196 case PIPE_FORMAT_YCBCR
:
197 return (MAPSURF_422
| MT_422_YCRCB_SWAPY
);
199 case PIPE_FORMAT_RGB_FXT1
:
200 case PIPE_FORMAT_RGBA_FXT1
:
201 return (MAPSURF_COMPRESSED
| MT_COMPRESS_FXT1
);
203 case PIPE_FORMAT_Z16_UNORM
:
204 return (MAPSURF_16BIT
| MT_16BIT_L16
);
206 case PIPE_FORMAT_RGBA_DXT1
:
207 case PIPE_FORMAT_RGB_DXT1
:
208 return (MAPSURF_COMPRESSED
| MT_COMPRESS_DXT1
);
209 case PIPE_FORMAT_RGBA_DXT3
:
210 return (MAPSURF_COMPRESSED
| MT_COMPRESS_DXT2_3
);
211 case PIPE_FORMAT_RGBA_DXT5
:
212 return (MAPSURF_COMPRESSED
| MT_COMPRESS_DXT4_5
);
214 case PIPE_FORMAT_S8Z24_UNORM
:
215 return (MAPSURF_32BIT
| MT_32BIT_xI824
);
217 debug_printf("i915: translate_texture_format() bad image format %x\n",
226 i915_update_texture(struct i915_context
*i915
,
228 const struct i915_texture
*tex
,
229 const struct i915_sampler_state
*sampler
,
232 const struct pipe_texture
*pt
= &tex
->base
;
234 const uint width
= pt
->width
[0], height
= pt
->height
[0], depth
= pt
->depth
[0];
235 const uint num_levels
= pt
->last_level
;
236 unsigned max_lod
= num_levels
* 4;
237 unsigned tiled
= MS3_USE_FENCE_REGS
;
244 format
= translate_texture_format(pt
->format
);
251 assert(!((pitch
- 1) & pitch
));
252 tiled
= MS3_TILED_SURFACE
;
257 (((height
- 1) << MS3_HEIGHT_SHIFT
)
258 | ((width
- 1) << MS3_WIDTH_SHIFT
)
263 * XXX When min_filter != mag_filter and there's just one mipmap level,
264 * set max_lod = 1 to make sure i915 chooses between min/mag filtering.
267 /* See note at the top of file */
268 if (max_lod
> (sampler
->maxlod
>> 2))
269 max_lod
= sampler
->maxlod
>> 2;
273 ((((pitch
/ 4) - 1) << MS4_PITCH_SHIFT
)
274 | MS4_CUBE_FACE_ENA_MASK
275 | ((max_lod
) << MS4_MAX_LOD_SHIFT
)
276 | ((depth
- 1) << MS4_VOLUME_DEPTH_SHIFT
));
281 i915_update_textures(struct i915_context
*i915
)
285 for (unit
= 0; unit
< i915
->num_textures
&& unit
< i915
->num_samplers
;
287 /* determine unit enable/disable by looking for a bound texture */
288 /* could also examine the fragment program? */
289 if (i915
->texture
[unit
]) {
290 i915_update_texture( i915
,
292 i915
->texture
[unit
], /* texture */
293 i915
->sampler
[unit
], /* sampler state */
294 i915
->current
.texbuffer
[unit
] );
298 i915
->hardware_dirty
|= I915_HW_MAP
;