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 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_resource *pt = &tex->b.b;
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_UYVY ||
92 pt->format == PIPE_FORMAT_YUYV)
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_fragment_sampler_views && 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->fragment_sampler_views[unit]) {
153 struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture);
155 update_sampler( i915,
157 i915->sampler[unit], /* sampler state */
158 texture, /* texture */
159 i915->current.sampler[unit] /* the result */
161 i915_update_texture( i915,
163 texture, /* texture */
164 i915->sampler[unit], /* sampler state */
165 i915->current.texbuffer[unit] );
167 i915->current.sampler_enable_nr++;
168 i915->current.sampler_enable_flags |= (1 << unit);
172 i915->hardware_dirty |= I915_HW_SAMPLER | I915_HW_MAP;
177 translate_texture_format(enum pipe_format pipeFormat)
179 switch (pipeFormat) {
180 case PIPE_FORMAT_L8_UNORM:
181 return MAPSURF_8BIT | MT_8BIT_L8;
182 case PIPE_FORMAT_I8_UNORM:
183 return MAPSURF_8BIT | MT_8BIT_I8;
184 case PIPE_FORMAT_A8_UNORM:
185 return MAPSURF_8BIT | MT_8BIT_A8;
186 case PIPE_FORMAT_L8A8_UNORM:
187 return MAPSURF_16BIT | MT_16BIT_AY88;
188 case PIPE_FORMAT_B5G6R5_UNORM:
189 return MAPSURF_16BIT | MT_16BIT_RGB565;
190 case PIPE_FORMAT_B5G5R5A1_UNORM:
191 return MAPSURF_16BIT | MT_16BIT_ARGB1555;
192 case PIPE_FORMAT_B4G4R4A4_UNORM:
193 return MAPSURF_16BIT | MT_16BIT_ARGB4444;
194 case PIPE_FORMAT_B8G8R8A8_UNORM:
195 return MAPSURF_32BIT | MT_32BIT_ARGB8888;
196 case PIPE_FORMAT_B8G8R8X8_UNORM:
197 return MAPSURF_32BIT | MT_32BIT_XRGB8888;
198 case PIPE_FORMAT_R8G8B8A8_UNORM:
199 return MAPSURF_32BIT | MT_32BIT_ABGR8888;
201 case PIPE_FORMAT_R8G8B8X8_UNORM:
202 return MAPSURF_32BIT | MT_32BIT_XBGR8888;
204 case PIPE_FORMAT_YUYV:
205 return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
206 case PIPE_FORMAT_UYVY:
207 return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
209 case PIPE_FORMAT_RGB_FXT1:
210 case PIPE_FORMAT_RGBA_FXT1:
211 return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
213 case PIPE_FORMAT_Z16_UNORM:
214 return (MAPSURF_16BIT | MT_16BIT_L16);
216 case PIPE_FORMAT_RGBA_DXT1:
217 case PIPE_FORMAT_RGB_DXT1:
218 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
219 case PIPE_FORMAT_RGBA_DXT3:
220 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
221 case PIPE_FORMAT_RGBA_DXT5:
222 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
224 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
225 return (MAPSURF_32BIT | MT_32BIT_xI824);
227 debug_printf("i915: translate_texture_format() bad image format %x\n",
236 i915_update_texture(struct i915_context *i915,
238 const struct i915_texture *tex,
239 const struct i915_sampler_state *sampler,
242 const struct pipe_resource *pt = &tex->b.b;
244 const uint width = pt->width0, height = pt->height0, depth = pt->depth0;
245 const uint num_levels = pt->last_level;
246 unsigned max_lod = num_levels * 4;
247 unsigned tiled = MS3_USE_FENCE_REGS;
254 format = translate_texture_format(pt->format);
261 assert(!((pitch - 1) & pitch));
262 tiled = MS3_TILED_SURFACE;
267 (((height - 1) << MS3_HEIGHT_SHIFT)
268 | ((width - 1) << MS3_WIDTH_SHIFT)
273 * XXX When min_filter != mag_filter and there's just one mipmap level,
274 * set max_lod = 1 to make sure i915 chooses between min/mag filtering.
277 /* See note at the top of file */
278 if (max_lod > (sampler->maxlod >> 2))
279 max_lod = sampler->maxlod >> 2;
283 ((((pitch / 4) - 1) << MS4_PITCH_SHIFT)
284 | MS4_CUBE_FACE_ENA_MASK
285 | ((max_lod) << MS4_MAX_LOD_SHIFT)
286 | ((depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
291 i915_update_textures(struct i915_context *i915)
295 for (unit = 0; unit < i915->num_fragment_sampler_views && unit < i915->num_samplers;
297 /* determine unit enable/disable by looking for a bound texture */
298 /* could also examine the fragment program? */
299 if (i915->fragment_sampler_views[unit]) {
300 struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture);
302 i915_update_texture( i915,
304 texture, /* texture */
305 i915->sampler[unit], /* sampler state */
306 i915->current.texbuffer[unit] );
310 i915->hardware_dirty |= I915_HW_MAP;