1/************************************************************************** 2 * 3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 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: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 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. 25 * 26 **************************************************************************/ 27 28#include "pipe/p_context.h" 29#include "pipe/p_state.h" 30 31#include "i915_state_inlines.h" 32#include "i915_context.h" 33#include "i915_reg.h" 34#include "i915_state.h" 35#include "i915_resource.h" 36 37 38/* 39 * A note about min_lod & max_lod. 40 * 41 * There is a circular dependancy between the sampler state 42 * and the map state to be submitted to hw. 43 * 44 * Two condition must be meet: 45 * min_lod =< max_lod == true 46 * max_lod =< last_level == true 47 * 48 * 49 * This is all fine and dandy if it were 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); 53 * 54 * So we need to update the map state when we change samplers and 55 * we need to 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 58 * changes. 59 */ 60 61static void update_map(struct i915_context *i915, 62 uint unit, 63 const struct i915_texture *tex, 64 const struct i915_sampler_state *sampler, 65 const struct pipe_sampler_view* view, 66 uint state[2]); 67 68 69 70/*********************************************************************** 71 * Samplers 72 */ 73 74/** 75 * Compute i915 texture sampling state. 76 * 77 * Recalculate all state from scratch. Perhaps not the most 78 * efficient, but this has gotten complex enough that we need 79 * something which is understandable and reliable. 80 * \param state returns the 3 words of compute state 81 */ 82static void update_sampler(struct i915_context *i915, 83 uint unit, 84 const struct i915_sampler_state *sampler, 85 const struct i915_texture *tex, 86 unsigned state[3]) 87{ 88 const struct pipe_resource *pt = &tex->b.b; 89 unsigned minlod, lastlod; 90 91 state[0] = sampler->state[0]; 92 state[1] = sampler->state[1]; 93 state[2] = sampler->state[2]; 94 95 if (pt->format == PIPE_FORMAT_UYVY || 96 pt->format == PIPE_FORMAT_YUYV) 97 state[0] |= SS2_COLORSPACE_CONVERSION; 98 99 /* 3D textures don't seem to respect the border color. 100 * Fallback if there's ever a danger that they might refer to 101 * it. 102 * 103 * Effectively this means fallback on 3D clamp or 104 * clamp_to_border. 105 * 106 * XXX: Check if this is true on i945. 107 * XXX: Check if this bug got fixed in release silicon. 108 */ 109#if 0 110 { 111 const unsigned ws = sampler->templ->wrap_s; 112 const unsigned wt = sampler->templ->wrap_t; 113 const unsigned wr = sampler->templ->wrap_r; 114 if (pt->target == PIPE_TEXTURE_3D && 115 (sampler->templ->min_img_filter != PIPE_TEX_FILTER_NEAREST || 116 sampler->templ->mag_img_filter != PIPE_TEX_FILTER_NEAREST) && 117 (ws == PIPE_TEX_WRAP_CLAMP || 118 wt == PIPE_TEX_WRAP_CLAMP || 119 wr == PIPE_TEX_WRAP_CLAMP || 120 ws == PIPE_TEX_WRAP_CLAMP_TO_BORDER || 121 wt == PIPE_TEX_WRAP_CLAMP_TO_BORDER || 122 wr == PIPE_TEX_WRAP_CLAMP_TO_BORDER)) { 123 if (i915->conformance_mode > 0) { 124 assert(0); 125 /* sampler->fallback = true; */ 126 /* TODO */ 127 } 128 } 129 } 130#endif 131 132 /* See note at the top of file */ 133 minlod = sampler->minlod; 134 lastlod = pt->last_level << 4; 135 136 if (lastlod < minlod) { 137 minlod = lastlod; 138 } 139 140 state[1] |= (sampler->minlod << SS3_MIN_LOD_SHIFT); 141 state[1] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT); 142} 143 144static void update_samplers(struct i915_context *i915) 145{ 146 uint unit; 147 148 i915->current.sampler_enable_nr = 0; 149 i915->current.sampler_enable_flags = 0x0; 150 151 for (unit = 0; unit < i915->num_fragment_sampler_views && unit < i915->num_samplers; 152 unit++) { 153 /* determine unit enable/disable by looking for a bound texture */ 154 /* could also examine the fragment program? */ 155 if (i915->fragment_sampler_views[unit]) { 156 struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture); 157 158 update_sampler(i915, 159 unit, 160 i915->sampler[unit], /* sampler state */ 161 texture, /* texture */ 162 i915->current.sampler[unit]); /* the result */ 163 update_map(i915, 164 unit, 165 texture, /* texture */ 166 i915->sampler[unit], /* sampler state */ 167 i915->fragment_sampler_views[unit], /* sampler view */ 168 i915->current.texbuffer[unit]); /* the result */ 169 170 i915->current.sampler_enable_nr++; 171 i915->current.sampler_enable_flags |= (1 << unit); 172 } 173 } 174 175 i915->hardware_dirty |= I915_HW_SAMPLER | I915_HW_MAP; 176} 177 178struct i915_tracked_state i915_hw_samplers = { 179 "samplers", 180 update_samplers, 181 I915_NEW_SAMPLER | I915_NEW_SAMPLER_VIEW 182}; 183 184 185/*********************************************************************** 186 * Sampler views 187 */ 188 189static uint translate_texture_format(enum pipe_format pipeFormat, 190 const struct pipe_sampler_view* view) 191{ 192 if ( (view->swizzle_r != PIPE_SWIZZLE_RED || 193 view->swizzle_g != PIPE_SWIZZLE_GREEN || 194 view->swizzle_b != PIPE_SWIZZLE_BLUE || 195 view->swizzle_a != PIPE_SWIZZLE_ALPHA ) && 196 pipeFormat != PIPE_FORMAT_Z24_UNORM_S8_UINT && 197 pipeFormat != PIPE_FORMAT_Z24X8_UNORM ) 198 debug_printf("i915: unsupported texture swizzle for format %d\n", pipeFormat); 199 200 switch (pipeFormat) { 201 case PIPE_FORMAT_L8_UNORM: 202 return MAPSURF_8BIT | MT_8BIT_L8; 203 case PIPE_FORMAT_I8_UNORM: 204 return MAPSURF_8BIT | MT_8BIT_I8; 205 case PIPE_FORMAT_A8_UNORM: 206 return MAPSURF_8BIT | MT_8BIT_A8; 207 case PIPE_FORMAT_L8A8_UNORM: 208 return MAPSURF_16BIT | MT_16BIT_AY88; 209 case PIPE_FORMAT_B5G6R5_UNORM: 210 return MAPSURF_16BIT | MT_16BIT_RGB565; 211 case PIPE_FORMAT_B5G5R5A1_UNORM: 212 return MAPSURF_16BIT | MT_16BIT_ARGB1555; 213 case PIPE_FORMAT_B4G4R4A4_UNORM: 214 return MAPSURF_16BIT | MT_16BIT_ARGB4444; 215 case PIPE_FORMAT_B10G10R10A2_UNORM: 216 return MAPSURF_32BIT | MT_32BIT_ARGB2101010; 217 case PIPE_FORMAT_B8G8R8A8_UNORM: 218 case PIPE_FORMAT_B8G8R8A8_SRGB: 219 return MAPSURF_32BIT | MT_32BIT_ARGB8888; 220 case PIPE_FORMAT_B8G8R8X8_UNORM: 221 return MAPSURF_32BIT | MT_32BIT_XRGB8888; 222 case PIPE_FORMAT_R8G8B8A8_UNORM: 223 return MAPSURF_32BIT | MT_32BIT_ABGR8888; 224 case PIPE_FORMAT_R8G8B8X8_UNORM: 225 return MAPSURF_32BIT | MT_32BIT_XBGR8888; 226 case PIPE_FORMAT_YUYV: 227 return (MAPSURF_422 | MT_422_YCRCB_NORMAL); 228 case PIPE_FORMAT_UYVY: 229 return (MAPSURF_422 | MT_422_YCRCB_SWAPY); 230#if 0 231 case PIPE_FORMAT_RGB_FXT1: 232 case PIPE_FORMAT_RGBA_FXT1: 233 return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1); 234#endif 235 case PIPE_FORMAT_Z16_UNORM: 236 return (MAPSURF_16BIT | MT_16BIT_L16); 237 case PIPE_FORMAT_DXT1_RGBA: 238 case PIPE_FORMAT_DXT1_RGB: 239 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1); 240 case PIPE_FORMAT_DXT3_RGBA: 241 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3); 242 case PIPE_FORMAT_DXT5_RGBA: 243 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5); 244 case PIPE_FORMAT_Z24_UNORM_S8_UINT: 245 case PIPE_FORMAT_Z24X8_UNORM: 246 { 247 if ( view->swizzle_r == PIPE_SWIZZLE_RED && 248 view->swizzle_g == PIPE_SWIZZLE_RED && 249 view->swizzle_b == PIPE_SWIZZLE_RED && 250 view->swizzle_a == PIPE_SWIZZLE_ONE) 251 return (MAPSURF_32BIT | MT_32BIT_xA824); 252 if ( view->swizzle_r == PIPE_SWIZZLE_RED && 253 view->swizzle_g == PIPE_SWIZZLE_RED && 254 view->swizzle_b == PIPE_SWIZZLE_RED && 255 view->swizzle_a == PIPE_SWIZZLE_RED) 256 return (MAPSURF_32BIT | MT_32BIT_xI824); 257 if ( view->swizzle_r == PIPE_SWIZZLE_ZERO && 258 view->swizzle_g == PIPE_SWIZZLE_ZERO && 259 view->swizzle_b == PIPE_SWIZZLE_ZERO && 260 view->swizzle_a == PIPE_SWIZZLE_RED) 261 return (MAPSURF_32BIT | MT_32BIT_xL824); 262 debug_printf("i915: unsupported depth swizzle %d %d %d %d\n", 263 view->swizzle_r, 264 view->swizzle_g, 265 view->swizzle_b, 266 view->swizzle_a); 267 return (MAPSURF_32BIT | MT_32BIT_xL824); 268 } 269 default: 270 debug_printf("i915: translate_texture_format() bad image format %x\n", 271 pipeFormat); 272 assert(0); 273 return 0; 274 } 275} 276 277static inline uint32_t 278ms3_tiling_bits(enum i915_winsys_buffer_tile tiling) 279{ 280 uint32_t tiling_bits = 0; 281 282 switch (tiling) { 283 case I915_TILE_Y: 284 tiling_bits |= MS3_TILE_WALK_Y; 285 case I915_TILE_X: 286 tiling_bits |= MS3_TILED_SURFACE; 287 case I915_TILE_NONE: 288 break; 289 } 290 291 return tiling_bits; 292} 293 294static void update_map(struct i915_context *i915, 295 uint unit, 296 const struct i915_texture *tex, 297 const struct i915_sampler_state *sampler, 298 const struct pipe_sampler_view* view, 299 uint state[2]) 300{ 301 const struct pipe_resource *pt = &tex->b.b; 302 uint format, pitch; 303 const uint width = pt->width0, height = pt->height0, depth = pt->depth0; 304 const uint num_levels = pt->last_level; 305 unsigned max_lod = num_levels * 4; 306 307 assert(tex); 308 assert(width); 309 assert(height); 310 assert(depth); 311 312 format = translate_texture_format(pt->format, view); 313 i915->current.sampler_srgb[unit] = ( pt->format == PIPE_FORMAT_B8G8R8A8_SRGB || 314 pt->format == PIPE_FORMAT_L8_SRGB ); 315 pitch = tex->stride; 316 317 assert(format); 318 assert(pitch); 319 320 /* MS3 state */ 321 state[0] = 322 (((height - 1) << MS3_HEIGHT_SHIFT) 323 | ((width - 1) << MS3_WIDTH_SHIFT) 324 | format 325 | ms3_tiling_bits(tex->tiling)); 326 327 /* 328 * XXX When min_filter != mag_filter and there's just one mipmap level, 329 * set max_lod = 1 to make sure i915 chooses between min/mag filtering. 330 */ 331 332 /* See note at the top of file */ 333 if (max_lod > (sampler->maxlod >> 2)) 334 max_lod = sampler->maxlod >> 2; 335 336 /* MS4 state */ 337 state[1] = 338 ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) 339 | MS4_CUBE_FACE_ENA_MASK 340 | ((max_lod) << MS4_MAX_LOD_SHIFT) 341 | ((depth - 1) << MS4_VOLUME_DEPTH_SHIFT)); 342} 343 344static void update_maps(struct i915_context *i915) 345{ 346 uint unit; 347 348 for (unit = 0; unit < i915->num_fragment_sampler_views && unit < i915->num_samplers; 349 unit++) { 350 /* determine unit enable/disable by looking for a bound texture */ 351 /* could also examine the fragment program? */ 352 if (i915->fragment_sampler_views[unit]) { 353 struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture); 354 355 update_map(i915, 356 unit, 357 texture, /* texture */ 358 i915->sampler[unit], /* sampler state */ 359 i915->fragment_sampler_views[unit], /* sampler view */ 360 i915->current.texbuffer[unit]); 361 } 362 } 363 364 i915->hardware_dirty |= I915_HW_MAP; 365} 366 367struct i915_tracked_state i915_hw_sampler_views = { 368 "sampler_views", 369 update_maps, 370 I915_NEW_SAMPLER_VIEW 371}; 372