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"
31 #include "i915_state_inlines.h"
32 #include "i915_context.h"
34 #include "i915_state.h"
35 #include "i915_resource.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 update_texture in update_samplers
57 * and the second part is done else where in code tracking the state
61 static void update_texture(struct i915_context
*i915
,
63 const struct i915_texture
*tex
,
64 const struct i915_sampler_state
*sampler
,
69 /***********************************************************************
74 * Compute i915 texture sampling state.
76 * Recalculate all state from scratch. Perhaps not the most
77 * efficient, but this has gotten complex enough that we need
78 * something which is understandable and reliable.
79 * \param state returns the 3 words of compute state
81 static void update_sampler(struct i915_context
*i915
,
83 const struct i915_sampler_state
*sampler
,
84 const struct i915_texture
*tex
,
87 const struct pipe_resource
*pt
= &tex
->b
.b
;
88 unsigned minlod
, lastlod
;
90 state
[0] = sampler
->state
[0];
91 state
[1] = sampler
->state
[1];
92 state
[2] = sampler
->state
[2];
94 if (pt
->format
== PIPE_FORMAT_UYVY
||
95 pt
->format
== PIPE_FORMAT_YUYV
)
96 state
[0] |= SS2_COLORSPACE_CONVERSION
;
98 /* 3D textures don't seem to respect the border color.
99 * Fallback if there's ever a danger that they might refer to
102 * Effectively this means fallback on 3D clamp or
105 * XXX: Check if this is true on i945.
106 * XXX: Check if this bug got fixed in release silicon.
110 const unsigned ws
= sampler
->templ
->wrap_s
;
111 const unsigned wt
= sampler
->templ
->wrap_t
;
112 const unsigned wr
= sampler
->templ
->wrap_r
;
113 if (pt
->target
== PIPE_TEXTURE_3D
&&
114 (sampler
->templ
->min_img_filter
!= PIPE_TEX_FILTER_NEAREST
||
115 sampler
->templ
->mag_img_filter
!= PIPE_TEX_FILTER_NEAREST
) &&
116 (ws
== PIPE_TEX_WRAP_CLAMP
||
117 wt
== PIPE_TEX_WRAP_CLAMP
||
118 wr
== PIPE_TEX_WRAP_CLAMP
||
119 ws
== PIPE_TEX_WRAP_CLAMP_TO_BORDER
||
120 wt
== PIPE_TEX_WRAP_CLAMP_TO_BORDER
||
121 wr
== PIPE_TEX_WRAP_CLAMP_TO_BORDER
)) {
122 if (i915
->conformance_mode
> 0) {
124 /* sampler->fallback = true; */
131 /* See note at the top of file */
132 minlod
= sampler
->minlod
;
133 lastlod
= pt
->last_level
<< 4;
135 if (lastlod
< minlod
) {
139 state
[1] |= (sampler
->minlod
<< SS3_MIN_LOD_SHIFT
);
140 state
[1] |= (unit
<< SS3_TEXTUREMAP_INDEX_SHIFT
);
143 static void update_samplers(struct i915_context
*i915
)
147 i915
->current
.sampler_enable_nr
= 0;
148 i915
->current
.sampler_enable_flags
= 0x0;
150 for (unit
= 0; unit
< i915
->num_fragment_sampler_views
&& unit
< i915
->num_samplers
;
152 /* determine unit enable/disable by looking for a bound texture */
153 /* could also examine the fragment program? */
154 if (i915
->fragment_sampler_views
[unit
]) {
155 struct i915_texture
*texture
= i915_texture(i915
->fragment_sampler_views
[unit
]->texture
);
159 i915
->sampler
[unit
], /* sampler state */
160 texture
, /* texture */
161 i915
->current
.sampler
[unit
]); /* the result */
164 texture
, /* texture */
165 i915
->sampler
[unit
], /* sampler state */
166 i915
->current
.texbuffer
[unit
]); /* the result */
168 i915
->current
.sampler_enable_nr
++;
169 i915
->current
.sampler_enable_flags
|= (1 << unit
);
173 i915
->hardware_dirty
|= I915_HW_SAMPLER
| I915_HW_MAP
;
176 struct i915_tracked_state i915_hw_samplers
= {
179 I915_NEW_SAMPLER
| I915_NEW_SAMPLER_VIEW
184 /***********************************************************************
188 static uint
translate_texture_format(enum pipe_format pipeFormat
)
190 switch (pipeFormat
) {
191 case PIPE_FORMAT_L8_UNORM
:
192 return MAPSURF_8BIT
| MT_8BIT_L8
;
193 case PIPE_FORMAT_I8_UNORM
:
194 return MAPSURF_8BIT
| MT_8BIT_I8
;
195 case PIPE_FORMAT_A8_UNORM
:
196 return MAPSURF_8BIT
| MT_8BIT_A8
;
197 case PIPE_FORMAT_L8A8_UNORM
:
198 return MAPSURF_16BIT
| MT_16BIT_AY88
;
199 case PIPE_FORMAT_B5G6R5_UNORM
:
200 return MAPSURF_16BIT
| MT_16BIT_RGB565
;
201 case PIPE_FORMAT_B5G5R5A1_UNORM
:
202 return MAPSURF_16BIT
| MT_16BIT_ARGB1555
;
203 case PIPE_FORMAT_B4G4R4A4_UNORM
:
204 return MAPSURF_16BIT
| MT_16BIT_ARGB4444
;
205 case PIPE_FORMAT_B8G8R8A8_UNORM
:
206 return MAPSURF_32BIT
| MT_32BIT_ARGB8888
;
207 case PIPE_FORMAT_B8G8R8X8_UNORM
:
208 return MAPSURF_32BIT
| MT_32BIT_XRGB8888
;
209 case PIPE_FORMAT_R8G8B8A8_UNORM
:
210 return MAPSURF_32BIT
| MT_32BIT_ABGR8888
;
212 case PIPE_FORMAT_R8G8B8X8_UNORM
:
213 return MAPSURF_32BIT
| MT_32BIT_XBGR8888
;
215 case PIPE_FORMAT_YUYV
:
216 return (MAPSURF_422
| MT_422_YCRCB_NORMAL
);
217 case PIPE_FORMAT_UYVY
:
218 return (MAPSURF_422
| MT_422_YCRCB_SWAPY
);
220 case PIPE_FORMAT_RGB_FXT1
:
221 case PIPE_FORMAT_RGBA_FXT1
:
222 return (MAPSURF_COMPRESSED
| MT_COMPRESS_FXT1
);
224 case PIPE_FORMAT_Z16_UNORM
:
225 return (MAPSURF_16BIT
| MT_16BIT_L16
);
227 case PIPE_FORMAT_RGBA_DXT1
:
228 case PIPE_FORMAT_RGB_DXT1
:
229 return (MAPSURF_COMPRESSED
| MT_COMPRESS_DXT1
);
230 case PIPE_FORMAT_RGBA_DXT3
:
231 return (MAPSURF_COMPRESSED
| MT_COMPRESS_DXT2_3
);
232 case PIPE_FORMAT_RGBA_DXT5
:
233 return (MAPSURF_COMPRESSED
| MT_COMPRESS_DXT4_5
);
235 case PIPE_FORMAT_Z24_UNORM_S8_USCALED
:
236 case PIPE_FORMAT_Z24X8_UNORM
:
237 return (MAPSURF_32BIT
| MT_32BIT_xI824
);
239 debug_printf("i915: translate_texture_format() bad image format %x\n",
246 static void update_texture(struct i915_context
*i915
,
248 const struct i915_texture
*tex
,
249 const struct i915_sampler_state
*sampler
,
252 const struct pipe_resource
*pt
= &tex
->b
.b
;
254 const uint width
= pt
->width0
, height
= pt
->height0
, depth
= pt
->depth0
;
255 const uint num_levels
= pt
->last_level
;
256 unsigned max_lod
= num_levels
* 4;
257 unsigned tiled
= MS3_USE_FENCE_REGS
;
264 format
= translate_texture_format(pt
->format
);
271 assert(!((pitch
- 1) & pitch
));
272 tiled
= MS3_TILED_SURFACE
;
277 (((height
- 1) << MS3_HEIGHT_SHIFT
)
278 | ((width
- 1) << MS3_WIDTH_SHIFT
)
283 * XXX When min_filter != mag_filter and there's just one mipmap level,
284 * set max_lod = 1 to make sure i915 chooses between min/mag filtering.
287 /* See note at the top of file */
288 if (max_lod
> (sampler
->maxlod
>> 2))
289 max_lod
= sampler
->maxlod
>> 2;
293 ((((pitch
/ 4) - 1) << MS4_PITCH_SHIFT
)
294 | MS4_CUBE_FACE_ENA_MASK
295 | ((max_lod
) << MS4_MAX_LOD_SHIFT
)
296 | ((depth
- 1) << MS4_VOLUME_DEPTH_SHIFT
));
299 static void update_textures(struct i915_context
*i915
)
303 for (unit
= 0; unit
< i915
->num_fragment_sampler_views
&& unit
< i915
->num_samplers
;
305 /* determine unit enable/disable by looking for a bound texture */
306 /* could also examine the fragment program? */
307 if (i915
->fragment_sampler_views
[unit
]) {
308 struct i915_texture
*texture
= i915_texture(i915
->fragment_sampler_views
[unit
]->texture
);
312 texture
, /* texture */
313 i915
->sampler
[unit
], /* sampler state */
314 i915
->current
.texbuffer
[unit
]);
318 i915
->hardware_dirty
|= I915_HW_MAP
;
321 struct i915_tracked_state i915_hw_sampler_views
= {
324 I915_NEW_SAMPLER_VIEW