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      1 /*
      2  * Copyright (C) 2009 Maciej Cencora.
      3  * Copyright (C) 2008 Nicolai Haehnle.
      4  * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
      5  *
      6  * The Weather Channel (TM) funded Tungsten Graphics to develop the
      7  * initial release of the Radeon 8500 driver under the XFree86 license.
      8  * This notice must be preserved.
      9  *
     10  * Permission is hereby granted, free of charge, to any person obtaining
     11  * a copy of this software and associated documentation files (the
     12  * "Software"), to deal in the Software without restriction, including
     13  * without limitation the rights to use, copy, modify, merge, publish,
     14  * distribute, sublicense, and/or sell copies of the Software, and to
     15  * permit persons to whom the Software is furnished to do so, subject to
     16  * the following conditions:
     17  *
     18  * The above copyright notice and this permission notice (including the
     19  * next paragraph) shall be included in all copies or substantial
     20  * portions of the Software.
     21  *
     22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     23  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     24  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     25  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
     26  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     27  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     28  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     29  *
     30  */
     31 
     32 #include "main/glheader.h"
     33 #include "main/imports.h"
     34 #include "main/context.h"
     35 #include "main/enums.h"
     36 #include "main/mfeatures.h"
     37 #include "main/mipmap.h"
     38 #include "main/pbo.h"
     39 #include "main/texcompress.h"
     40 #include "main/texstore.h"
     41 #include "main/teximage.h"
     42 #include "main/texobj.h"
     43 #include "drivers/common/meta.h"
     44 
     45 #include "xmlpool.h"		/* for symbolic values of enum-type options */
     46 
     47 #include "radeon_common.h"
     48 
     49 #include "radeon_mipmap_tree.h"
     50 
     51 static void teximage_assign_miptree(radeonContextPtr rmesa,
     52 				    struct gl_texture_object *texObj,
     53 				    struct gl_texture_image *texImage);
     54 
     55 static radeon_mipmap_tree *radeon_miptree_create_for_teximage(radeonContextPtr rmesa,
     56 							      struct gl_texture_object *texObj,
     57 							      struct gl_texture_image *texImage);
     58 
     59 void copy_rows(void* dst, GLuint dststride, const void* src, GLuint srcstride,
     60 	GLuint numrows, GLuint rowsize)
     61 {
     62 	assert(rowsize <= dststride);
     63 	assert(rowsize <= srcstride);
     64 
     65 	radeon_print(RADEON_TEXTURE, RADEON_TRACE,
     66 		"%s dst %p, stride %u, src %p, stride %u, "
     67 		"numrows %u, rowsize %u.\n",
     68 		__func__, dst, dststride,
     69 		src, srcstride,
     70 		numrows, rowsize);
     71 
     72 	if (rowsize == srcstride && rowsize == dststride) {
     73 		memcpy(dst, src, numrows*rowsize);
     74 	} else {
     75 		GLuint i;
     76 		for(i = 0; i < numrows; ++i) {
     77 			memcpy(dst, src, rowsize);
     78 			dst += dststride;
     79 			src += srcstride;
     80 		}
     81 	}
     82 }
     83 
     84 /* textures */
     85 /**
     86  * Allocate an empty texture image object.
     87  */
     88 struct gl_texture_image *radeonNewTextureImage(struct gl_context *ctx)
     89 {
     90 	return CALLOC(sizeof(radeon_texture_image));
     91 }
     92 
     93 
     94 /**
     95  * Delete a texture image object.
     96  */
     97 static void
     98 radeonDeleteTextureImage(struct gl_context *ctx, struct gl_texture_image *img)
     99 {
    100 	/* nothing special (yet) for radeon_texture_image */
    101 	_mesa_delete_texture_image(ctx, img);
    102 }
    103 
    104 static GLboolean
    105 radeonAllocTextureImageBuffer(struct gl_context *ctx,
    106 			      struct gl_texture_image *timage)
    107 {
    108 	radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
    109 	radeon_texture_image *image = get_radeon_texture_image(timage);
    110 	struct gl_texture_object *texobj = timage->TexObject;
    111 	int slices;
    112 
    113 	ctx->Driver.FreeTextureImageBuffer(ctx, timage);
    114 
    115 	switch (texobj->Target) {
    116 	case GL_TEXTURE_3D:
    117 		slices = timage->Depth;
    118 		break;
    119 	default:
    120 		slices = 1;
    121 	}
    122 	assert(!image->base.ImageOffsets);
    123 	image->base.ImageOffsets = malloc(slices * sizeof(GLuint));
    124 	teximage_assign_miptree(rmesa, texobj, timage);
    125 
    126 	return GL_TRUE;
    127 }
    128 
    129 
    130 /**
    131  * Free memory associated with this texture image.
    132  */
    133 void radeonFreeTextureImageBuffer(struct gl_context *ctx, struct gl_texture_image *timage)
    134 {
    135 	radeon_texture_image* image = get_radeon_texture_image(timage);
    136 
    137 	if (image->mt) {
    138 		radeon_miptree_unreference(&image->mt);
    139 	} else {
    140 		_swrast_free_texture_image_buffer(ctx, timage);
    141 	}
    142 	if (image->bo) {
    143 		radeon_bo_unref(image->bo);
    144 		image->bo = NULL;
    145 	}
    146 	if (image->base.Buffer) {
    147 		_mesa_align_free(image->base.Buffer);
    148 		image->base.Buffer = NULL;
    149 	}
    150 
    151 	if (image->base.ImageOffsets) {
    152 		free(image->base.ImageOffsets);
    153 		image->base.ImageOffsets = NULL;
    154 	}
    155 }
    156 
    157 /* Set Data pointer and additional data for mapped texture image */
    158 static void teximage_set_map_data(radeon_texture_image *image)
    159 {
    160 	radeon_mipmap_level *lvl;
    161 
    162 	if (!image->mt) {
    163 		radeon_warning("%s(%p) Trying to set map data without miptree.\n",
    164 				__func__, image);
    165 
    166 		return;
    167 	}
    168 
    169 	lvl = &image->mt->levels[image->base.Base.Level];
    170 
    171 	image->base.Map = image->mt->bo->ptr + lvl->faces[image->base.Base.Face].offset;
    172 	image->base.RowStride = lvl->rowstride / _mesa_get_format_bytes(image->base.Base.TexFormat);
    173 }
    174 
    175 
    176 /**
    177  * Map a single texture image for glTexImage and friends.
    178  */
    179 void radeon_teximage_map(radeon_texture_image *image, GLboolean write_enable)
    180 {
    181 	radeon_print(RADEON_TEXTURE, RADEON_VERBOSE,
    182 			"%s(img %p), write_enable %s.\n",
    183 			__func__, image,
    184 			write_enable ? "true": "false");
    185 	if (image->mt) {
    186 		assert(!image->base.Map);
    187 
    188 		radeon_bo_map(image->mt->bo, write_enable);
    189 		teximage_set_map_data(image);
    190 	}
    191 }
    192 
    193 
    194 void radeon_teximage_unmap(radeon_texture_image *image)
    195 {
    196 	radeon_print(RADEON_TEXTURE, RADEON_VERBOSE,
    197 			"%s(img %p)\n",
    198 			__func__, image);
    199 	if (image->mt) {
    200 		assert(image->base.Map);
    201 
    202 		image->base.Map = 0;
    203 		radeon_bo_unmap(image->mt->bo);
    204 	}
    205 }
    206 
    207 /**
    208  * Map texture memory/buffer into user space.
    209  * Note: the region of interest parameters are ignored here.
    210  * \param mapOut  returns start of mapping of region of interest
    211  * \param rowStrideOut  returns row stride in bytes
    212  */
    213 static void
    214 radeon_map_texture_image(struct gl_context *ctx,
    215 			 struct gl_texture_image *texImage,
    216 			 GLuint slice,
    217 			 GLuint x, GLuint y, GLuint w, GLuint h,
    218 			 GLbitfield mode,
    219 			 GLubyte **map,
    220 			 GLint *stride)
    221 {
    222 	radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
    223 	radeon_texture_image *image = get_radeon_texture_image(texImage);
    224 	radeon_mipmap_tree *mt = image->mt;
    225 	GLuint texel_size = _mesa_get_format_bytes(texImage->TexFormat);
    226 	GLuint width = texImage->Width;
    227 	GLuint height = texImage->Height;
    228 	struct radeon_bo *bo = !image->mt ? image->bo : image->mt->bo;
    229 	unsigned int bw, bh;
    230 	GLboolean write = (mode & GL_MAP_WRITE_BIT) != 0;
    231 
    232 	_mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
    233 	assert(y % bh == 0);
    234 	y /= bh;
    235 	texel_size /= bw;
    236 
    237 	if (bo && radeon_bo_is_referenced_by_cs(bo, rmesa->cmdbuf.cs)) {
    238 		radeon_print(RADEON_TEXTURE, RADEON_VERBOSE,
    239 			     "%s for texture that is "
    240 			     "queued for GPU processing.\n",
    241 			     __func__);
    242 		radeon_firevertices(rmesa);
    243 	}
    244 
    245 	if (image->bo) {
    246 		/* TFP case */
    247 		radeon_bo_map(image->bo, write);
    248 		*stride = get_texture_image_row_stride(rmesa, texImage->TexFormat, width, 0, texImage->TexObject->Target);
    249 		*map = bo->ptr;
    250 	} else if (likely(mt)) {
    251 		void *base;
    252 		radeon_mipmap_level *lvl = &image->mt->levels[texImage->Level];
    253 
    254 		radeon_bo_map(mt->bo, write);
    255 		base = mt->bo->ptr + lvl->faces[image->base.Base.Face].offset;
    256 
    257 		*stride = lvl->rowstride;
    258 		*map = base + (slice * height) * *stride;
    259 	} else {
    260 		/* texture data is in malloc'd memory */
    261 
    262 		assert(map);
    263 
    264 		*stride = _mesa_format_row_stride(texImage->TexFormat, width);
    265 		*map = image->base.Buffer + (slice * height) * *stride;
    266 	}
    267 
    268 	*map += y * *stride + x * texel_size;
    269 }
    270 
    271 static void
    272 radeon_unmap_texture_image(struct gl_context *ctx,
    273 			   struct gl_texture_image *texImage, GLuint slice)
    274 {
    275 	radeon_texture_image *image = get_radeon_texture_image(texImage);
    276 
    277 	if (image->bo)
    278 		radeon_bo_unmap(image->bo);
    279 	else if (image->mt)
    280 		radeon_bo_unmap(image->mt->bo);
    281 }
    282 
    283 /* try to find a format which will only need a memcopy */
    284 static gl_format radeonChoose8888TexFormat(radeonContextPtr rmesa,
    285 					   GLenum srcFormat,
    286 					   GLenum srcType, GLboolean fbo)
    287 {
    288 #if defined(RADEON_R100)
    289 	/* r100 can only do this */
    290 	return _radeon_texformat_argb8888;
    291 #elif defined(RADEON_R200)
    292 	const GLuint ui = 1;
    293 	const GLubyte littleEndian = *((const GLubyte *)&ui);
    294 
    295 	if (fbo)
    296 		return _radeon_texformat_argb8888;
    297 
    298 	if ((srcFormat == GL_RGBA && srcType == GL_UNSIGNED_INT_8_8_8_8) ||
    299 	    (srcFormat == GL_RGBA && srcType == GL_UNSIGNED_BYTE && !littleEndian) ||
    300 	    (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_INT_8_8_8_8_REV) ||
    301 	    (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_BYTE && littleEndian)) {
    302 		return MESA_FORMAT_RGBA8888;
    303 	} else if ((srcFormat == GL_RGBA && srcType == GL_UNSIGNED_INT_8_8_8_8_REV) ||
    304 		   (srcFormat == GL_RGBA && srcType == GL_UNSIGNED_BYTE && littleEndian) ||
    305 		   (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_INT_8_8_8_8) ||
    306 		   (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_BYTE && !littleEndian)) {
    307 		return MESA_FORMAT_RGBA8888_REV;
    308 	} else
    309 		return _radeon_texformat_argb8888;
    310 #endif
    311 }
    312 
    313 gl_format radeonChooseTextureFormat_mesa(struct gl_context * ctx,
    314 					 GLenum target,
    315 					 GLint internalFormat,
    316 					 GLenum format,
    317 					 GLenum type)
    318 {
    319 	return radeonChooseTextureFormat(ctx, internalFormat, format,
    320 					 type, 0);
    321 }
    322 
    323 gl_format radeonChooseTextureFormat(struct gl_context * ctx,
    324 				    GLint internalFormat,
    325 				    GLenum format,
    326 				    GLenum type, GLboolean fbo)
    327 {
    328 	radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
    329 	const GLboolean do32bpt =
    330 	    (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_32);
    331 	const GLboolean force16bpt =
    332 	    (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FORCE_16);
    333 	(void)format;
    334 
    335 	radeon_print(RADEON_TEXTURE, RADEON_TRACE,
    336 		"%s InternalFormat=%s(%d) type=%s format=%s\n",
    337 		__func__,
    338 		_mesa_lookup_enum_by_nr(internalFormat), internalFormat,
    339 		_mesa_lookup_enum_by_nr(type), _mesa_lookup_enum_by_nr(format));
    340 	radeon_print(RADEON_TEXTURE, RADEON_TRACE,
    341 			"%s do32bpt=%d force16bpt=%d\n",
    342 			__func__, do32bpt, force16bpt);
    343 
    344 	switch (internalFormat) {
    345 	case 4:
    346 	case GL_RGBA:
    347 	case GL_COMPRESSED_RGBA:
    348 		switch (type) {
    349 		case GL_UNSIGNED_INT_10_10_10_2:
    350 		case GL_UNSIGNED_INT_2_10_10_10_REV:
    351 			return do32bpt ? _radeon_texformat_argb8888 :
    352 			    _radeon_texformat_argb1555;
    353 		case GL_UNSIGNED_SHORT_4_4_4_4:
    354 		case GL_UNSIGNED_SHORT_4_4_4_4_REV:
    355 			return _radeon_texformat_argb4444;
    356 		case GL_UNSIGNED_SHORT_5_5_5_1:
    357 		case GL_UNSIGNED_SHORT_1_5_5_5_REV:
    358 			return _radeon_texformat_argb1555;
    359 		default:
    360 			return do32bpt ? radeonChoose8888TexFormat(rmesa, format, type, fbo) :
    361 			    _radeon_texformat_argb4444;
    362 		}
    363 
    364 	case 3:
    365 	case GL_RGB:
    366 	case GL_COMPRESSED_RGB:
    367 		switch (type) {
    368 		case GL_UNSIGNED_SHORT_4_4_4_4:
    369 		case GL_UNSIGNED_SHORT_4_4_4_4_REV:
    370 			return _radeon_texformat_argb4444;
    371 		case GL_UNSIGNED_SHORT_5_5_5_1:
    372 		case GL_UNSIGNED_SHORT_1_5_5_5_REV:
    373 			return _radeon_texformat_argb1555;
    374 		case GL_UNSIGNED_SHORT_5_6_5:
    375 		case GL_UNSIGNED_SHORT_5_6_5_REV:
    376 			return _radeon_texformat_rgb565;
    377 		default:
    378 			return do32bpt ? _radeon_texformat_argb8888 :
    379 			    _radeon_texformat_rgb565;
    380 		}
    381 
    382 	case GL_RGBA8:
    383 	case GL_RGB10_A2:
    384 	case GL_RGBA12:
    385 	case GL_RGBA16:
    386 		return !force16bpt ?
    387 			radeonChoose8888TexFormat(rmesa, format, type, fbo) :
    388 			_radeon_texformat_argb4444;
    389 
    390 	case GL_RGBA4:
    391 	case GL_RGBA2:
    392 		return _radeon_texformat_argb4444;
    393 
    394 	case GL_RGB5_A1:
    395 		return _radeon_texformat_argb1555;
    396 
    397 	case GL_RGB8:
    398 	case GL_RGB10:
    399 	case GL_RGB12:
    400 	case GL_RGB16:
    401 		return !force16bpt ? _radeon_texformat_argb8888 :
    402 		    _radeon_texformat_rgb565;
    403 
    404 	case GL_RGB5:
    405 	case GL_RGB4:
    406 	case GL_R3_G3_B2:
    407 		return _radeon_texformat_rgb565;
    408 
    409 	case GL_ALPHA:
    410 	case GL_ALPHA4:
    411 	case GL_ALPHA8:
    412 	case GL_ALPHA12:
    413 	case GL_ALPHA16:
    414 	case GL_COMPRESSED_ALPHA:
    415 #if defined(RADEON_R200)
    416 		/* r200: can't use a8 format since interpreting hw I8 as a8 would result
    417 		   in wrong rgb values (same as alpha value instead of 0). */
    418 		return _radeon_texformat_al88;
    419 #else
    420 		return MESA_FORMAT_A8;
    421 #endif
    422 	case 1:
    423 	case GL_LUMINANCE:
    424 	case GL_LUMINANCE4:
    425 	case GL_LUMINANCE8:
    426 	case GL_LUMINANCE12:
    427 	case GL_LUMINANCE16:
    428 	case GL_COMPRESSED_LUMINANCE:
    429 		return MESA_FORMAT_L8;
    430 
    431 	case 2:
    432 	case GL_LUMINANCE_ALPHA:
    433 	case GL_LUMINANCE4_ALPHA4:
    434 	case GL_LUMINANCE6_ALPHA2:
    435 	case GL_LUMINANCE8_ALPHA8:
    436 	case GL_LUMINANCE12_ALPHA4:
    437 	case GL_LUMINANCE12_ALPHA12:
    438 	case GL_LUMINANCE16_ALPHA16:
    439 	case GL_COMPRESSED_LUMINANCE_ALPHA:
    440 		return _radeon_texformat_al88;
    441 
    442 	case GL_INTENSITY:
    443 	case GL_INTENSITY4:
    444 	case GL_INTENSITY8:
    445 	case GL_INTENSITY12:
    446 	case GL_INTENSITY16:
    447 	case GL_COMPRESSED_INTENSITY:
    448 		return MESA_FORMAT_I8;
    449 
    450 	case GL_YCBCR_MESA:
    451 		if (type == GL_UNSIGNED_SHORT_8_8_APPLE ||
    452 		    type == GL_UNSIGNED_BYTE)
    453 			return MESA_FORMAT_YCBCR;
    454 		else
    455 			return MESA_FORMAT_YCBCR_REV;
    456 
    457 	case GL_RGB_S3TC:
    458 	case GL_RGB4_S3TC:
    459 	case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
    460 		return MESA_FORMAT_RGB_DXT1;
    461 
    462 	case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
    463 		return MESA_FORMAT_RGBA_DXT1;
    464 
    465 	case GL_RGBA_S3TC:
    466 	case GL_RGBA4_S3TC:
    467 	case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
    468 		return MESA_FORMAT_RGBA_DXT3;
    469 
    470 	case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
    471 		return MESA_FORMAT_RGBA_DXT5;
    472 
    473 	case GL_ALPHA16F_ARB:
    474 		return MESA_FORMAT_ALPHA_FLOAT16;
    475 	case GL_ALPHA32F_ARB:
    476 		return MESA_FORMAT_ALPHA_FLOAT32;
    477 	case GL_LUMINANCE16F_ARB:
    478 		return MESA_FORMAT_LUMINANCE_FLOAT16;
    479 	case GL_LUMINANCE32F_ARB:
    480 		return MESA_FORMAT_LUMINANCE_FLOAT32;
    481 	case GL_LUMINANCE_ALPHA16F_ARB:
    482 		return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
    483 	case GL_LUMINANCE_ALPHA32F_ARB:
    484 		return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
    485 	case GL_INTENSITY16F_ARB:
    486 		return MESA_FORMAT_INTENSITY_FLOAT16;
    487 	case GL_INTENSITY32F_ARB:
    488 		return MESA_FORMAT_INTENSITY_FLOAT32;
    489 	case GL_RGB16F_ARB:
    490 		return MESA_FORMAT_RGBA_FLOAT16;
    491 	case GL_RGB32F_ARB:
    492 		return MESA_FORMAT_RGBA_FLOAT32;
    493 	case GL_RGBA16F_ARB:
    494 		return MESA_FORMAT_RGBA_FLOAT16;
    495 	case GL_RGBA32F_ARB:
    496 		return MESA_FORMAT_RGBA_FLOAT32;
    497 
    498 	case GL_DEPTH_COMPONENT:
    499 	case GL_DEPTH_COMPONENT16:
    500 	case GL_DEPTH_COMPONENT24:
    501 	case GL_DEPTH_COMPONENT32:
    502 	case GL_DEPTH_STENCIL_EXT:
    503 	case GL_DEPTH24_STENCIL8_EXT:
    504 		return MESA_FORMAT_S8_Z24;
    505 
    506 	/* EXT_texture_sRGB */
    507 	case GL_SRGB:
    508 	case GL_SRGB8:
    509 	case GL_SRGB_ALPHA:
    510 	case GL_SRGB8_ALPHA8:
    511 	case GL_COMPRESSED_SRGB:
    512 	case GL_COMPRESSED_SRGB_ALPHA:
    513 		return MESA_FORMAT_SARGB8;
    514 
    515 	case GL_SLUMINANCE:
    516 	case GL_SLUMINANCE8:
    517 	case GL_COMPRESSED_SLUMINANCE:
    518 		return MESA_FORMAT_SL8;
    519 
    520 	case GL_SLUMINANCE_ALPHA:
    521 	case GL_SLUMINANCE8_ALPHA8:
    522 	case GL_COMPRESSED_SLUMINANCE_ALPHA:
    523 		return MESA_FORMAT_SLA8;
    524 
    525 	case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
    526 		return MESA_FORMAT_SRGB_DXT1;
    527 	case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
    528 		return MESA_FORMAT_SRGBA_DXT1;
    529 	case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
    530 		return MESA_FORMAT_SRGBA_DXT3;
    531 	case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
    532 		return MESA_FORMAT_SRGBA_DXT5;
    533 
    534 	default:
    535 		_mesa_problem(ctx,
    536 			      "unexpected internalFormat 0x%x in %s",
    537 			      (int)internalFormat, __func__);
    538 		return MESA_FORMAT_NONE;
    539 	}
    540 
    541 	return MESA_FORMAT_NONE;		/* never get here */
    542 }
    543 
    544 /** Check if given image is valid within current texture object.
    545  */
    546 static void teximage_assign_miptree(radeonContextPtr rmesa,
    547 				    struct gl_texture_object *texObj,
    548 				    struct gl_texture_image *texImage)
    549 {
    550 	radeonTexObj *t = radeon_tex_obj(texObj);
    551 	radeon_texture_image* image = get_radeon_texture_image(texImage);
    552 
    553 	/* Try using current miptree, or create new if there isn't any */
    554 	if (!t->mt || !radeon_miptree_matches_image(t->mt, texImage)) {
    555 		radeon_miptree_unreference(&t->mt);
    556 		t->mt = radeon_miptree_create_for_teximage(rmesa,
    557 							   texObj,
    558 							   texImage);
    559 
    560 		radeon_print(RADEON_TEXTURE, RADEON_NORMAL,
    561 			     "%s: texObj %p, texImage %p, "
    562 				"texObj miptree doesn't match, allocated new miptree %p\n",
    563 				__FUNCTION__, texObj, texImage, t->mt);
    564 	}
    565 
    566 	/* Miptree alocation may have failed,
    567 	 * when there was no image for baselevel specified */
    568 	if (t->mt) {
    569 		radeon_miptree_reference(t->mt, &image->mt);
    570 	} else
    571 		radeon_print(RADEON_TEXTURE, RADEON_VERBOSE,
    572 				"%s Failed to allocate miptree.\n", __func__);
    573 }
    574 
    575 unsigned radeonIsFormatRenderable(gl_format mesa_format)
    576 {
    577 	if (mesa_format == _radeon_texformat_argb8888 || mesa_format == _radeon_texformat_rgb565 ||
    578 		mesa_format == _radeon_texformat_argb1555 || mesa_format == _radeon_texformat_argb4444)
    579 		return 1;
    580 
    581 	switch (mesa_format)
    582 	{
    583 		case MESA_FORMAT_Z16:
    584 		case MESA_FORMAT_S8_Z24:
    585 			return 1;
    586 		default:
    587 			return 0;
    588 	}
    589 }
    590 
    591 #if FEATURE_OES_EGL_image
    592 void radeon_image_target_texture_2d(struct gl_context *ctx, GLenum target,
    593 				    struct gl_texture_object *texObj,
    594 				    struct gl_texture_image *texImage,
    595 				    GLeglImageOES image_handle)
    596 {
    597 	radeonContextPtr radeon = RADEON_CONTEXT(ctx);
    598 	radeonTexObj *t = radeon_tex_obj(texObj);
    599 	radeon_texture_image *radeonImage = get_radeon_texture_image(texImage);
    600 	__DRIscreen *screen;
    601 	__DRIimage *image;
    602 
    603 	screen = radeon->dri.screen;
    604 	image = screen->dri2.image->lookupEGLImage(screen, image_handle,
    605 						   screen->loaderPrivate);
    606 	if (image == NULL)
    607 		return;
    608 
    609 	radeonFreeTextureImageBuffer(ctx, texImage);
    610 
    611 	texImage->Width = image->width;
    612 	texImage->Height = image->height;
    613 	texImage->Depth = 1;
    614 	texImage->_BaseFormat = GL_RGBA;
    615 	texImage->TexFormat = image->format;
    616 	radeonImage->base.RowStride = image->pitch;
    617 	texImage->InternalFormat = image->internal_format;
    618 
    619 	if(t->mt)
    620 	{
    621 		radeon_miptree_unreference(&t->mt);
    622 		t->mt = NULL;
    623 	}
    624 
    625 	/* NOTE: The following is *very* ugly and will probably break. But
    626 	   I don't know how to deal with it, without creating a whole new
    627 	   function like radeon_miptree_from_bo() so I'm going with the
    628 	   easy but error-prone way. */
    629 
    630 	radeon_try_alloc_miptree(radeon, t);
    631 
    632 	radeon_miptree_reference(t->mt, &radeonImage->mt);
    633 
    634 	if (t->mt == NULL)
    635 	{
    636 		radeon_print(RADEON_TEXTURE, RADEON_VERBOSE,
    637 			     "%s Failed to allocate miptree.\n", __func__);
    638 		return;
    639 	}
    640 
    641 	/* Particularly ugly: this is guaranteed to break, if image->bo is
    642 	   not of the required size for a miptree. */
    643 	radeon_bo_unref(t->mt->bo);
    644 	radeon_bo_ref(image->bo);
    645 	t->mt->bo = image->bo;
    646 
    647 	if (!radeon_miptree_matches_image(t->mt, &radeonImage->base.Base))
    648 		fprintf(stderr, "miptree doesn't match image\n");
    649 }
    650 #endif
    651 
    652 gl_format _radeon_texformat_rgba8888 = MESA_FORMAT_NONE;
    653 gl_format _radeon_texformat_argb8888 = MESA_FORMAT_NONE;
    654 gl_format _radeon_texformat_rgb565 = MESA_FORMAT_NONE;
    655 gl_format _radeon_texformat_argb4444 = MESA_FORMAT_NONE;
    656 gl_format _radeon_texformat_argb1555 = MESA_FORMAT_NONE;
    657 gl_format _radeon_texformat_al88 = MESA_FORMAT_NONE;
    658 /*@}*/
    659 
    660 
    661 static void
    662 radeonInitTextureFormats(void)
    663 {
    664    if (_mesa_little_endian()) {
    665       _radeon_texformat_rgba8888	= MESA_FORMAT_RGBA8888;
    666       _radeon_texformat_argb8888	= MESA_FORMAT_ARGB8888;
    667       _radeon_texformat_rgb565		= MESA_FORMAT_RGB565;
    668       _radeon_texformat_argb4444	= MESA_FORMAT_ARGB4444;
    669       _radeon_texformat_argb1555	= MESA_FORMAT_ARGB1555;
    670       _radeon_texformat_al88		= MESA_FORMAT_AL88;
    671    }
    672    else {
    673       _radeon_texformat_rgba8888	= MESA_FORMAT_RGBA8888_REV;
    674       _radeon_texformat_argb8888	= MESA_FORMAT_ARGB8888_REV;
    675       _radeon_texformat_rgb565		= MESA_FORMAT_RGB565_REV;
    676       _radeon_texformat_argb4444	= MESA_FORMAT_ARGB4444_REV;
    677       _radeon_texformat_argb1555	= MESA_FORMAT_ARGB1555_REV;
    678       _radeon_texformat_al88		= MESA_FORMAT_AL88_REV;
    679    }
    680 }
    681 
    682 void
    683 radeon_init_common_texture_funcs(radeonContextPtr radeon,
    684 				 struct dd_function_table *functions)
    685 {
    686 	functions->NewTextureImage = radeonNewTextureImage;
    687 	functions->DeleteTextureImage = radeonDeleteTextureImage;
    688 	functions->AllocTextureImageBuffer = radeonAllocTextureImageBuffer;
    689 	functions->FreeTextureImageBuffer = radeonFreeTextureImageBuffer;
    690 	functions->MapTextureImage = radeon_map_texture_image;
    691 	functions->UnmapTextureImage = radeon_unmap_texture_image;
    692 
    693 	functions->ChooseTextureFormat	= radeonChooseTextureFormat_mesa;
    694 
    695 	functions->CopyTexSubImage = radeonCopyTexSubImage;
    696 
    697 	functions->Bitmap = _mesa_meta_Bitmap;
    698 #if FEATURE_OES_EGL_image
    699 	functions->EGLImageTargetTexture2D = radeon_image_target_texture_2d;
    700 #endif
    701 
    702 	radeonInitTextureFormats();
    703 }
    704 
    705 static void
    706 radeon_swrast_map_image(radeonContextPtr rmesa,
    707 			radeon_texture_image *image)
    708 {
    709 	GLuint level, face;
    710 	radeon_mipmap_tree *mt;
    711 	GLuint texel_size;
    712 	radeon_mipmap_level *lvl;
    713 	int rs;
    714 
    715 	if (!image || !image->mt)
    716 		return;
    717 
    718 	texel_size = _mesa_get_format_bytes(image->base.Base.TexFormat);
    719 	level = image->base.Base.Level;
    720 	face = image->base.Base.Face;
    721 	mt = image->mt;
    722 
    723 	lvl = &image->mt->levels[level];
    724 
    725 	rs = lvl->rowstride / texel_size;
    726 
    727 	radeon_bo_map(mt->bo, 1);
    728 
    729 	image->base.Map = mt->bo->ptr + lvl->faces[face].offset;
    730 	if (mt->target == GL_TEXTURE_3D) {
    731 		int i;
    732 
    733 		for (i = 0; i < mt->levels[level].depth; i++)
    734 			image->base.ImageOffsets[i] = rs * lvl->height * i;
    735 	}
    736 	image->base.RowStride = rs;
    737 }
    738 
    739 static void
    740 radeon_swrast_unmap_image(radeonContextPtr rmesa,
    741 			  radeon_texture_image *image)
    742 {
    743 	if (image && image->mt) {
    744 		image->base.Map = NULL;
    745 		radeon_bo_unmap(image->mt->bo);
    746 	}
    747 }
    748 
    749 void
    750 radeon_swrast_map_texture_images(struct gl_context *ctx,
    751 				 struct gl_texture_object *texObj)
    752 {
    753 	radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
    754 	GLuint nr_faces = _mesa_num_tex_faces(texObj->Target);
    755 	int i, face;
    756 
    757 	for (i = texObj->BaseLevel; i <= texObj->_MaxLevel; i++) {
    758 		for (face = 0; face < nr_faces; face++) {
    759 			radeon_texture_image *image = get_radeon_texture_image(texObj->Image[face][i]);
    760 			radeon_swrast_map_image(rmesa, image);
    761 		}
    762 	}
    763 }
    764 
    765 void
    766 radeon_swrast_unmap_texture_images(struct gl_context *ctx,
    767 				   struct gl_texture_object *texObj)
    768 {
    769 	radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
    770 	GLuint nr_faces = _mesa_num_tex_faces(texObj->Target);
    771 	int i, face;
    772 
    773 	for (i = texObj->BaseLevel; i <= texObj->_MaxLevel; i++) {
    774 		for (face = 0; face < nr_faces; face++) {
    775 			radeon_texture_image *image = get_radeon_texture_image(texObj->Image[face][i]);
    776 			radeon_swrast_unmap_image(rmesa, image);
    777 		}
    778 	}
    779 
    780 }
    781 
    782 static radeon_mipmap_tree *radeon_miptree_create_for_teximage(radeonContextPtr rmesa,
    783 						       struct gl_texture_object *texObj,
    784 						       struct gl_texture_image *texImage)
    785 {
    786 	radeonTexObj *t = radeon_tex_obj(texObj);
    787 	GLuint firstLevel;
    788 	GLuint lastLevel;
    789 	int width, height, depth;
    790 	int i;
    791 
    792 	width = texImage->Width;
    793 	height = texImage->Height;
    794 	depth = texImage->Depth;
    795 
    796 	if (texImage->Level > texObj->BaseLevel &&
    797 	    (width == 1 ||
    798 	     (texObj->Target != GL_TEXTURE_1D && height == 1) ||
    799 	     (texObj->Target == GL_TEXTURE_3D && depth == 1))) {
    800 		/* For this combination, we're at some lower mipmap level and
    801 		 * some important dimension is 1.  We can't extrapolate up to a
    802 		 * likely base level width/height/depth for a full mipmap stack
    803 		 * from this info, so just allocate this one level.
    804 		 */
    805 		firstLevel = texImage->Level;
    806 		lastLevel = texImage->Level;
    807 	} else {
    808 		if (texImage->Level < texObj->BaseLevel)
    809 			firstLevel = 0;
    810 		else
    811 			firstLevel = texObj->BaseLevel;
    812 
    813 		for (i = texImage->Level; i > firstLevel; i--) {
    814 			width <<= 1;
    815 			if (height != 1)
    816 				height <<= 1;
    817 			if (depth != 1)
    818 				depth <<= 1;
    819 		}
    820 		if ((texObj->Sampler.MinFilter == GL_NEAREST ||
    821 		     texObj->Sampler.MinFilter == GL_LINEAR) &&
    822 		    texImage->Level == firstLevel) {
    823 			lastLevel = firstLevel;
    824 		} else {
    825 			lastLevel = firstLevel + _mesa_logbase2(MAX2(MAX2(width, height), depth));
    826 		}
    827 	}
    828 
    829 	return  radeon_miptree_create(rmesa, texObj->Target,
    830 				      texImage->TexFormat, firstLevel, lastLevel - firstLevel + 1,
    831 				      width, height, depth,
    832 				      t->tile_bits);
    833 }
    834