intel_tex_validate.c revision f8f40b53a6a4551630e25bfd7f6e12334bb0f3f8
1#include "main/mtypes.h" 2#include "main/macros.h" 3 4#include "intel_context.h" 5#include "intel_batchbuffer.h" 6#include "intel_mipmap_tree.h" 7#include "intel_tex.h" 8#include "intel_chipset.h" 9 10#define FILE_DEBUG_FLAG DEBUG_TEXTURE 11 12/** 13 * Compute which mipmap levels that really need to be sent to the hardware. 14 * This depends on the base image size, GL_TEXTURE_MIN_LOD, 15 * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL. 16 */ 17static void 18intel_calculate_first_last_level(struct intel_context *intel, 19 struct intel_texture_object *intelObj) 20{ 21 struct gl_texture_object *tObj = &intelObj->base; 22 const struct gl_texture_image *const baseImage = 23 tObj->Image[0][tObj->BaseLevel]; 24 25 /* These must be signed values. MinLod and MaxLod can be negative numbers, 26 * and having firstLevel and lastLevel as signed prevents the need for 27 * extra sign checks. 28 */ 29 int firstLevel; 30 int lastLevel; 31 32 /* Yes, this looks overly complicated, but it's all needed. 33 */ 34 switch (tObj->Target) { 35 case GL_TEXTURE_1D: 36 case GL_TEXTURE_2D: 37 case GL_TEXTURE_3D: 38 case GL_TEXTURE_CUBE_MAP: 39 if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) { 40 /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL. 41 */ 42 firstLevel = lastLevel = tObj->BaseLevel; 43 } 44 else { 45 if (!IS_9XX(intel->intelScreen->deviceID)) { 46 firstLevel = tObj->BaseLevel + (GLint) (tObj->MinLod + 0.5); 47 firstLevel = MAX2(firstLevel, tObj->BaseLevel); 48 firstLevel = MIN2(firstLevel, tObj->BaseLevel + baseImage->MaxLog2); 49 lastLevel = tObj->BaseLevel + (GLint) (tObj->MaxLod + 0.5); 50 lastLevel = MAX2(lastLevel, tObj->BaseLevel); 51 lastLevel = MIN2(lastLevel, tObj->BaseLevel + baseImage->MaxLog2); 52 lastLevel = MIN2(lastLevel, tObj->MaxLevel); 53 lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */ 54 } else { 55 /* Min/max LOD are taken into account in sampler state. We don't 56 * want to re-layout textures just because clamping has been applied 57 * since it means a bunch of blitting around and probably no memory 58 * savings (since we have to keep the other levels around anyway). 59 */ 60 firstLevel = tObj->BaseLevel; 61 lastLevel = MIN2(tObj->BaseLevel + baseImage->MaxLog2, 62 tObj->MaxLevel); 63 /* need at least one level */ 64 lastLevel = MAX2(firstLevel, lastLevel); 65 } 66 } 67 break; 68 case GL_TEXTURE_RECTANGLE_NV: 69 case GL_TEXTURE_4D_SGIS: 70 firstLevel = lastLevel = 0; 71 break; 72 default: 73 return; 74 } 75 76 /* save these values */ 77 intelObj->firstLevel = firstLevel; 78 intelObj->lastLevel = lastLevel; 79} 80 81/** 82 * Copies the image's contents at its level into the object's miptree, 83 * and updates the image to point at the object's miptree. 84 */ 85static void 86copy_image_data_to_tree(struct intel_context *intel, 87 struct intel_texture_object *intelObj, 88 struct intel_texture_image *intelImage) 89{ 90 if (intelImage->mt) { 91 /* Copy potentially with the blitter: 92 */ 93 intel_miptree_image_copy(intel, 94 intelObj->mt, 95 intelImage->face, 96 intelImage->level, intelImage->mt); 97 98 intel_miptree_release(intel, &intelImage->mt); 99 } 100 else { 101 assert(intelImage->base.Data != NULL); 102 103 /* More straightforward upload. 104 */ 105 intel_miptree_image_data(intel, 106 intelObj->mt, 107 intelImage->face, 108 intelImage->level, 109 intelImage->base.Data, 110 intelImage->base.RowStride, 111 intelImage->base.RowStride * 112 intelImage->base.Height); 113 _mesa_align_free(intelImage->base.Data); 114 intelImage->base.Data = NULL; 115 } 116 117 intel_miptree_reference(&intelImage->mt, intelObj->mt); 118} 119 120 121/* 122 */ 123GLuint 124intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit) 125{ 126 struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current; 127 struct intel_texture_object *intelObj = intel_texture_object(tObj); 128 int comp_byte = 0; 129 int cpp; 130 GLuint face, i; 131 GLuint nr_faces = 0; 132 struct intel_texture_image *firstImage; 133 134 /* We know/require this is true by now: 135 */ 136 assert(intelObj->base._Complete); 137 138 /* What levels must the tree include at a minimum? 139 */ 140 intel_calculate_first_last_level(intel, intelObj); 141 firstImage = 142 intel_texture_image(intelObj->base.Image[0][intelObj->firstLevel]); 143 144 /* Fallback case: 145 */ 146 if (firstImage->base.Border) { 147 if (intelObj->mt) { 148 intel_miptree_release(intel, &intelObj->mt); 149 } 150 return GL_FALSE; 151 } 152 153 154 /* If both firstImage and intelObj have a tree which can contain 155 * all active images, favour firstImage. Note that because of the 156 * completeness requirement, we know that the image dimensions 157 * will match. 158 */ 159 if (firstImage->mt && 160 firstImage->mt != intelObj->mt && 161 firstImage->mt->first_level <= intelObj->firstLevel && 162 firstImage->mt->last_level >= intelObj->lastLevel) { 163 164 if (intelObj->mt) 165 intel_miptree_release(intel, &intelObj->mt); 166 167 intel_miptree_reference(&intelObj->mt, firstImage->mt); 168 } 169 170 if (_mesa_is_format_compressed(firstImage->base.TexFormat)) { 171 comp_byte = intel_compressed_num_bytes(firstImage->base.TexFormat); 172 cpp = comp_byte; 173 } 174 else 175 cpp = _mesa_get_format_bytes(firstImage->base.TexFormat); 176 177 /* Check tree can hold all active levels. Check tree matches 178 * target, imageFormat, etc. 179 * 180 * XXX: For some layouts (eg i945?), the test might have to be 181 * first_level == firstLevel, as the tree isn't valid except at the 182 * original start level. Hope to get around this by 183 * programming minLod, maxLod, baseLevel into the hardware and 184 * leaving the tree alone. 185 */ 186 if (intelObj->mt && 187 (intelObj->mt->target != intelObj->base.Target || 188 intelObj->mt->internal_format != firstImage->base.InternalFormat || 189 intelObj->mt->first_level != intelObj->firstLevel || 190 intelObj->mt->last_level != intelObj->lastLevel || 191 intelObj->mt->width0 != firstImage->base.Width || 192 intelObj->mt->height0 != firstImage->base.Height || 193 intelObj->mt->depth0 != firstImage->base.Depth || 194 intelObj->mt->cpp != cpp || 195 intelObj->mt->compressed != _mesa_is_format_compressed(firstImage->base.TexFormat))) { 196 intel_miptree_release(intel, &intelObj->mt); 197 } 198 199 200 /* May need to create a new tree: 201 */ 202 if (!intelObj->mt) { 203 intelObj->mt = intel_miptree_create(intel, 204 intelObj->base.Target, 205 firstImage->base._BaseFormat, 206 firstImage->base.InternalFormat, 207 intelObj->firstLevel, 208 intelObj->lastLevel, 209 firstImage->base.Width, 210 firstImage->base.Height, 211 firstImage->base.Depth, 212 cpp, 213 comp_byte, 214 GL_TRUE); 215 } 216 217 /* Pull in any images not in the object's tree: 218 */ 219 nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; 220 for (face = 0; face < nr_faces; face++) { 221 for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) { 222 struct intel_texture_image *intelImage = 223 intel_texture_image(intelObj->base.Image[face][i]); 224 225 /* Need to import images in main memory or held in other trees. 226 */ 227 if (intelObj->mt != intelImage->mt) { 228 copy_image_data_to_tree(intel, intelObj, intelImage); 229 } 230 } 231 } 232 233 return GL_TRUE; 234} 235 236void 237intel_tex_map_level_images(struct intel_context *intel, 238 struct intel_texture_object *intelObj, 239 int level) 240{ 241 GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; 242 GLuint face; 243 244 for (face = 0; face < nr_faces; face++) { 245 struct intel_texture_image *intelImage = 246 intel_texture_image(intelObj->base.Image[face][level]); 247 248 if (intelImage && intelImage->mt) { 249 intelImage->base.Data = 250 intel_miptree_image_map(intel, 251 intelImage->mt, 252 intelImage->face, 253 intelImage->level, 254 &intelImage->base.RowStride, 255 intelImage->base.ImageOffsets); 256 /* convert stride to texels, not bytes */ 257 intelImage->base.RowStride /= intelImage->mt->cpp; 258 /* intelImage->base.ImageStride /= intelImage->mt->cpp; */ 259 } 260 } 261} 262 263void 264intel_tex_unmap_level_images(struct intel_context *intel, 265 struct intel_texture_object *intelObj, 266 int level) 267{ 268 GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; 269 GLuint face; 270 271 for (face = 0; face < nr_faces; face++) { 272 struct intel_texture_image *intelImage = 273 intel_texture_image(intelObj->base.Image[face][level]); 274 275 if (intelImage && intelImage->mt) { 276 intel_miptree_image_unmap(intel, intelImage->mt); 277 intelImage->base.Data = NULL; 278 } 279 } 280} 281 282void 283intel_tex_map_images(struct intel_context *intel, 284 struct intel_texture_object *intelObj) 285{ 286 int i; 287 288 DBG("%s\n", __FUNCTION__); 289 290 for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) 291 intel_tex_map_level_images(intel, intelObj, i); 292} 293 294void 295intel_tex_unmap_images(struct intel_context *intel, 296 struct intel_texture_object *intelObj) 297{ 298 int i; 299 300 for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) 301 intel_tex_unmap_level_images(intel, intelObj, i); 302} 303