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 "main/mtypes.h"
29 #include "main/enums.h"
30 #include "main/colormac.h"
31 #include "main/macros.h"
32 #include "main/samplerobj.h"
33
34 #include "intel_mipmap_tree.h"
35 #include "intel_tex.h"
36
37 #include "i830_context.h"
38 #include "i830_reg.h"
39 #include "intel_chipset.h"
40
41
42 static GLuint
translate_texture_format(GLuint mesa_format)43 translate_texture_format(GLuint mesa_format)
44 {
45 switch (mesa_format) {
46 case MESA_FORMAT_L8:
47 return MAPSURF_8BIT | MT_8BIT_L8;
48 case MESA_FORMAT_I8:
49 return MAPSURF_8BIT | MT_8BIT_I8;
50 case MESA_FORMAT_A8:
51 return MAPSURF_8BIT | MT_8BIT_I8; /* Kludge! */
52 case MESA_FORMAT_AL88:
53 return MAPSURF_16BIT | MT_16BIT_AY88;
54 case MESA_FORMAT_RGB565:
55 return MAPSURF_16BIT | MT_16BIT_RGB565;
56 case MESA_FORMAT_ARGB1555:
57 return MAPSURF_16BIT | MT_16BIT_ARGB1555;
58 case MESA_FORMAT_ARGB4444:
59 return MAPSURF_16BIT | MT_16BIT_ARGB4444;
60 case MESA_FORMAT_ARGB8888:
61 return MAPSURF_32BIT | MT_32BIT_ARGB8888;
62 case MESA_FORMAT_XRGB8888:
63 return MAPSURF_32BIT | MT_32BIT_XRGB8888;
64 case MESA_FORMAT_YCBCR_REV:
65 return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
66 case MESA_FORMAT_YCBCR:
67 return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
68 case MESA_FORMAT_RGB_FXT1:
69 case MESA_FORMAT_RGBA_FXT1:
70 return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
71 case MESA_FORMAT_RGBA_DXT1:
72 case MESA_FORMAT_RGB_DXT1:
73 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
74 case MESA_FORMAT_RGBA_DXT3:
75 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
76 case MESA_FORMAT_RGBA_DXT5:
77 return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
78 default:
79 fprintf(stderr, "%s: bad image format %s\n", __FUNCTION__,
80 _mesa_get_format_name(mesa_format));
81 abort();
82 return 0;
83 }
84 }
85
86
87
88
89 /* The i915 (and related graphics cores) do not support GL_CLAMP. The
90 * Intel drivers for "other operating systems" implement GL_CLAMP as
91 * GL_CLAMP_TO_EDGE, so the same is done here.
92 */
93 static GLuint
translate_wrap_mode(GLenum wrap)94 translate_wrap_mode(GLenum wrap)
95 {
96 switch (wrap) {
97 case GL_REPEAT:
98 return TEXCOORDMODE_WRAP;
99 case GL_CLAMP:
100 case GL_CLAMP_TO_EDGE:
101 return TEXCOORDMODE_CLAMP; /* not really correct */
102 case GL_CLAMP_TO_BORDER:
103 return TEXCOORDMODE_CLAMP_BORDER;
104 case GL_MIRRORED_REPEAT:
105 return TEXCOORDMODE_MIRROR;
106 default:
107 return TEXCOORDMODE_WRAP;
108 }
109 }
110
111
112 /* Recalculate all state from scratch. Perhaps not the most
113 * efficient, but this has gotten complex enough that we need
114 * something which is understandable and reliable.
115 */
116 static bool
i830_update_tex_unit(struct intel_context * intel,GLuint unit,GLuint ss3)117 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
118 {
119 struct gl_context *ctx = &intel->ctx;
120 struct i830_context *i830 = i830_context(ctx);
121 struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
122 struct gl_texture_object *tObj = tUnit->_Current;
123 struct intel_texture_object *intelObj = intel_texture_object(tObj);
124 struct gl_texture_image *firstImage;
125 struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
126 GLuint *state = i830->state.Tex[unit], format, pitch;
127 GLint lodbias;
128 GLubyte border[4];
129 GLuint dst_x, dst_y;
130
131 memset(state, 0, sizeof(*state));
132
133 /*We need to refcount these. */
134
135 if (i830->state.tex_buffer[unit] != NULL) {
136 drm_intel_bo_unreference(i830->state.tex_buffer[unit]);
137 i830->state.tex_buffer[unit] = NULL;
138 }
139
140 if (!intel_finalize_mipmap_tree(intel, unit))
141 return false;
142
143 /* Get first image here, since intelObj->firstLevel will get set in
144 * the intel_finalize_mipmap_tree() call above.
145 */
146 firstImage = tObj->Image[0][tObj->BaseLevel];
147
148 intel_miptree_get_image_offset(intelObj->mt, tObj->BaseLevel, 0, 0,
149 &dst_x, &dst_y);
150
151 drm_intel_bo_reference(intelObj->mt->region->bo);
152 i830->state.tex_buffer[unit] = intelObj->mt->region->bo;
153 pitch = intelObj->mt->region->pitch * intelObj->mt->cpp;
154
155 /* XXX: This calculation is probably broken for tiled images with
156 * a non-page-aligned offset.
157 */
158 i830->state.tex_offset[unit] = dst_x * intelObj->mt->cpp + dst_y * pitch;
159
160 format = translate_texture_format(firstImage->TexFormat);
161
162 state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
163 (LOAD_TEXTURE_MAP0 << unit) | 4);
164
165 state[I830_TEXREG_TM0S1] =
166 (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
167 ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
168
169 if (intelObj->mt->region->tiling != I915_TILING_NONE) {
170 state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
171 if (intelObj->mt->region->tiling == I915_TILING_Y)
172 state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
173 }
174
175 state[I830_TEXREG_TM0S2] =
176 ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
177
178 {
179 if (tObj->Target == GL_TEXTURE_CUBE_MAP)
180 state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
181 CUBE_NEGX_ENABLE |
182 CUBE_POSX_ENABLE |
183 CUBE_NEGY_ENABLE |
184 CUBE_POSY_ENABLE |
185 CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
186 else
187 state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
188 }
189
190
191
192
193 {
194 GLuint minFilt, mipFilt, magFilt;
195 float maxlod;
196 uint32_t minlod_fixed, maxlod_fixed;
197
198 switch (sampler->MinFilter) {
199 case GL_NEAREST:
200 minFilt = FILTER_NEAREST;
201 mipFilt = MIPFILTER_NONE;
202 break;
203 case GL_LINEAR:
204 minFilt = FILTER_LINEAR;
205 mipFilt = MIPFILTER_NONE;
206 break;
207 case GL_NEAREST_MIPMAP_NEAREST:
208 minFilt = FILTER_NEAREST;
209 mipFilt = MIPFILTER_NEAREST;
210 break;
211 case GL_LINEAR_MIPMAP_NEAREST:
212 minFilt = FILTER_LINEAR;
213 mipFilt = MIPFILTER_NEAREST;
214 break;
215 case GL_NEAREST_MIPMAP_LINEAR:
216 minFilt = FILTER_NEAREST;
217 mipFilt = MIPFILTER_LINEAR;
218 break;
219 case GL_LINEAR_MIPMAP_LINEAR:
220 minFilt = FILTER_LINEAR;
221 mipFilt = MIPFILTER_LINEAR;
222 break;
223 default:
224 return false;
225 }
226
227 if (sampler->MaxAnisotropy > 1.0) {
228 minFilt = FILTER_ANISOTROPIC;
229 magFilt = FILTER_ANISOTROPIC;
230 }
231 else {
232 switch (sampler->MagFilter) {
233 case GL_NEAREST:
234 magFilt = FILTER_NEAREST;
235 break;
236 case GL_LINEAR:
237 magFilt = FILTER_LINEAR;
238 break;
239 default:
240 return false;
241 }
242 }
243
244 lodbias = (int) ((tUnit->LodBias + sampler->LodBias) * 16.0);
245 if (lodbias < -64)
246 lodbias = -64;
247 if (lodbias > 63)
248 lodbias = 63;
249
250 state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
251 TM0S3_LOD_BIAS_MASK);
252 #if 0
253 /* YUV conversion:
254 */
255 if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
256 firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
257 state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
258 #endif
259
260 /* We get one field with fraction bits for the maximum
261 * addressable (smallest resolution) LOD. Use it to cover both
262 * MAX_LEVEL and MAX_LOD.
263 */
264 minlod_fixed = U_FIXED(CLAMP(sampler->MinLod, 0.0, 11), 4);
265 maxlod = MIN2(sampler->MaxLod, tObj->_MaxLevel - tObj->BaseLevel);
266 if (intel->intelScreen->deviceID == PCI_CHIP_I855_GM ||
267 intel->intelScreen->deviceID == PCI_CHIP_I865_G) {
268 maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11.75), 2);
269 maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 3) >> 2);
270 state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT;
271 state[I830_TEXREG_TM0S2] |= TM0S2_LOD_PRECLAMP;
272 } else {
273 maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11), 0);
274 maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 15) >> 4);
275 state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT_830;
276 }
277 state[I830_TEXREG_TM0S3] |= minlod_fixed << TM0S3_MAX_MIP_SHIFT;
278 state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
279 (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
280 (magFilt << TM0S3_MAG_FILTER_SHIFT));
281 }
282
283 {
284 GLenum ws = sampler->WrapS;
285 GLenum wt = sampler->WrapT;
286
287
288 /* 3D textures not available on i830
289 */
290 if (tObj->Target == GL_TEXTURE_3D)
291 return false;
292
293 state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
294 MAP_UNIT(unit) |
295 ENABLE_TEXCOORD_PARAMS |
296 ss3 |
297 ENABLE_ADDR_V_CNTL |
298 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
299 | ENABLE_ADDR_U_CNTL |
300 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
301 (ws)));
302 }
303
304 /* convert border color from float to ubyte */
305 CLAMPED_FLOAT_TO_UBYTE(border[0], sampler->BorderColor.f[0]);
306 CLAMPED_FLOAT_TO_UBYTE(border[1], sampler->BorderColor.f[1]);
307 CLAMPED_FLOAT_TO_UBYTE(border[2], sampler->BorderColor.f[2]);
308 CLAMPED_FLOAT_TO_UBYTE(border[3], sampler->BorderColor.f[3]);
309
310 state[I830_TEXREG_TM0S4] = PACK_COLOR_8888(border[3],
311 border[0],
312 border[1],
313 border[2]);
314
315 I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), true);
316 /* memcmp was already disabled, but definitely won't work as the
317 * region might now change and that wouldn't be detected:
318 */
319 I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
320 return true;
321 }
322
323
324
325
326 void
i830UpdateTextureState(struct intel_context * intel)327 i830UpdateTextureState(struct intel_context *intel)
328 {
329 struct i830_context *i830 = i830_context(&intel->ctx);
330 bool ok = true;
331 GLuint i;
332
333 for (i = 0; i < I830_TEX_UNITS && ok; i++) {
334 switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
335 case TEXTURE_1D_BIT:
336 case TEXTURE_2D_BIT:
337 case TEXTURE_CUBE_BIT:
338 ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
339 break;
340 case TEXTURE_RECT_BIT:
341 ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
342 break;
343 case 0:{
344 struct i830_context *i830 = i830_context(&intel->ctx);
345 if (i830->state.active & I830_UPLOAD_TEX(i))
346 I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), false);
347
348 if (i830->state.tex_buffer[i] != NULL) {
349 drm_intel_bo_unreference(i830->state.tex_buffer[i]);
350 i830->state.tex_buffer[i] = NULL;
351 }
352 break;
353 }
354 case TEXTURE_3D_BIT:
355 default:
356 ok = false;
357 break;
358 }
359 }
360
361 FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
362
363 if (ok)
364 i830EmitTextureBlend(i830);
365 }
366