st_texture.c revision 4c7001462607e6e99e474d6271dd481d3f8f201c
1/************************************************************************** 2 * 3 * Copyright 2007 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 <stdio.h> 29 30#include "st_context.h" 31#include "st_format.h" 32#include "st_texture.h" 33#include "st_cb_fbo.h" 34#include "main/enums.h" 35 36#include "pipe/p_state.h" 37#include "pipe/p_context.h" 38#include "pipe/p_defines.h" 39#include "util/u_inlines.h" 40#include "util/u_format.h" 41#include "util/u_rect.h" 42#include "util/u_math.h" 43 44 45#define DBG if(0) printf 46 47 48/** 49 * Allocate a new pipe_resource object 50 * width0, height0, depth0 are the dimensions of the level 0 image 51 * (the highest resolution). last_level indicates how many mipmap levels 52 * to allocate storage for. For non-mipmapped textures, this will be zero. 53 */ 54struct pipe_resource * 55st_texture_create(struct st_context *st, 56 enum pipe_texture_target target, 57 enum pipe_format format, 58 GLuint last_level, 59 GLuint width0, 60 GLuint height0, 61 GLuint depth0, 62 GLuint bind ) 63{ 64 struct pipe_resource pt, *newtex; 65 struct pipe_screen *screen = st->pipe->screen; 66 67 assert(target < PIPE_MAX_TEXTURE_TYPES); 68 assert(width0 > 0); 69 assert(height0 > 0); 70 assert(depth0 > 0); 71 72 DBG("%s target %s format %s last_level %d\n", __FUNCTION__, 73 _mesa_lookup_enum_by_nr(target), 74 _mesa_lookup_enum_by_nr(format), last_level); 75 76 assert(format); 77 assert(screen->is_format_supported(screen, format, target, 0, 78 PIPE_BIND_SAMPLER_VIEW, 0)); 79 80 memset(&pt, 0, sizeof(pt)); 81 pt.target = target; 82 pt.format = format; 83 pt.last_level = last_level; 84 pt.width0 = width0; 85 pt.height0 = height0; 86 pt.depth0 = depth0; 87 pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : 1); 88 pt.usage = PIPE_USAGE_DEFAULT; 89 pt.bind = bind; 90 pt.flags = 0; 91 92 newtex = screen->resource_create(screen, &pt); 93 94 assert(!newtex || pipe_is_referenced(&newtex->reference)); 95 96 return newtex; 97} 98 99 100/** 101 * Check if a texture image can be pulled into a unified mipmap texture. 102 */ 103GLboolean 104st_texture_match_image(const struct pipe_resource *pt, 105 const struct gl_texture_image *image, 106 GLuint face, GLuint level) 107{ 108 /* Images with borders are never pulled into mipmap textures. 109 */ 110 if (image->Border) 111 return GL_FALSE; 112 113 /* Check if this image's format matches the established texture's format. 114 */ 115 if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format) 116 return GL_FALSE; 117 118 /* Test if this image's size matches what's expected in the 119 * established texture. 120 */ 121 if (image->Width != u_minify(pt->width0, level) || 122 image->Height != u_minify(pt->height0, level) || 123 image->Depth != u_minify(pt->depth0, level)) 124 return GL_FALSE; 125 126 return GL_TRUE; 127} 128 129 130/** 131 * Map a texture image and return the address for a particular 2D face/slice/ 132 * layer. The stImage indicates the cube face and mipmap level. The slice 133 * of the 3D texture is passed in 'zoffset'. 134 * \param usage one of the PIPE_TRANSFER_x values 135 * \param x, y, w, h the region of interest of the 2D image. 136 * \return address of mapping or NULL if any error 137 */ 138GLubyte * 139st_texture_image_map(struct st_context *st, struct st_texture_image *stImage, 140 GLuint zoffset, enum pipe_transfer_usage usage, 141 GLuint x, GLuint y, GLuint w, GLuint h) 142{ 143 struct pipe_context *pipe = st->pipe; 144 struct pipe_resource *pt = stImage->pt; 145 146 DBG("%s \n", __FUNCTION__); 147 148 stImage->transfer = pipe_get_transfer(st->pipe, pt, stImage->level, 149 stImage->face + zoffset, 150 usage, x, y, w, h); 151 152 if (stImage->transfer) 153 return pipe_transfer_map(pipe, stImage->transfer); 154 else 155 return NULL; 156} 157 158 159void 160st_texture_image_unmap(struct st_context *st, 161 struct st_texture_image *stImage) 162{ 163 struct pipe_context *pipe = st->pipe; 164 165 DBG("%s\n", __FUNCTION__); 166 167 pipe_transfer_unmap(pipe, stImage->transfer); 168 169 pipe->transfer_destroy(pipe, stImage->transfer); 170} 171 172 173 174/** 175 * Upload data to a rectangular sub-region. Lots of choices how to do this: 176 * 177 * - memcpy by span to current destination 178 * - upload data as new buffer and blit 179 * 180 * Currently always memcpy. 181 */ 182static void 183st_surface_data(struct pipe_context *pipe, 184 struct pipe_transfer *dst, 185 unsigned dstx, unsigned dsty, 186 const void *src, unsigned src_stride, 187 unsigned srcx, unsigned srcy, unsigned width, unsigned height) 188{ 189 void *map = pipe_transfer_map(pipe, dst); 190 191 assert(dst->resource); 192 util_copy_rect(map, 193 dst->resource->format, 194 dst->stride, 195 dstx, dsty, 196 width, height, 197 src, src_stride, 198 srcx, srcy); 199 200 pipe_transfer_unmap(pipe, dst); 201} 202 203 204/* Upload data for a particular image. 205 */ 206void 207st_texture_image_data(struct st_context *st, 208 struct pipe_resource *dst, 209 GLuint face, 210 GLuint level, 211 void *src, 212 GLuint src_row_stride, GLuint src_image_stride) 213{ 214 struct pipe_context *pipe = st->pipe; 215 GLuint depth = u_minify(dst->depth0, level); 216 GLuint i; 217 const GLubyte *srcUB = src; 218 struct pipe_transfer *dst_transfer; 219 220 DBG("%s\n", __FUNCTION__); 221 222 for (i = 0; i < depth; i++) { 223 dst_transfer = pipe_get_transfer(st->pipe, dst, level, face + i, 224 PIPE_TRANSFER_WRITE, 0, 0, 225 u_minify(dst->width0, level), 226 u_minify(dst->height0, level)); 227 228 st_surface_data(pipe, dst_transfer, 229 0, 0, /* dstx, dsty */ 230 srcUB, 231 src_row_stride, 232 0, 0, /* source x, y */ 233 u_minify(dst->width0, level), 234 u_minify(dst->height0, level)); /* width, height */ 235 236 pipe->transfer_destroy(pipe, dst_transfer); 237 238 srcUB += src_image_stride; 239 } 240} 241 242 243/** 244 * For debug only: get/print center pixel in the src resource. 245 */ 246static void 247print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src) 248{ 249 struct pipe_transfer *xfer; 250 struct pipe_box region; 251 ubyte *map; 252 253 region.x = src->width0 / 2; 254 region.y = src->height0 / 2; 255 region.z = 0; 256 region.width = 1; 257 region.height = 1; 258 region.depth = 1; 259 260 xfer = pipe->get_transfer(pipe, src, 0, PIPE_TRANSFER_READ, ®ion); 261 map = pipe->transfer_map(pipe, xfer); 262 263 printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]); 264 265 pipe->transfer_unmap(pipe, xfer); 266 pipe->transfer_destroy(pipe, xfer); 267} 268 269 270/** 271 * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'. 272 * This is used to copy mipmap images from one texture buffer to another. 273 * This typically happens when our initial guess at the total texture size 274 * is incorrect (see the guess_and_alloc_texture() function). 275 */ 276void 277st_texture_image_copy(struct pipe_context *pipe, 278 struct pipe_resource *dst, GLuint dstLevel, 279 struct pipe_resource *src, GLuint srcLevel, 280 GLuint face) 281{ 282 GLuint width = u_minify(dst->width0, dstLevel); 283 GLuint height = u_minify(dst->height0, dstLevel); 284 GLuint depth = u_minify(dst->depth0, dstLevel); 285 struct pipe_box src_box; 286 GLuint i; 287 288 assert(u_minify(src->width0, srcLevel) == width); 289 assert(u_minify(src->height0, srcLevel) == height); 290 assert(u_minify(src->depth0, srcLevel) == depth); 291 292 src_box.x = 0; 293 src_box.y = 0; 294 src_box.width = width; 295 src_box.height = height; 296 src_box.depth = 1; 297 /* Loop over 3D image slices */ 298 /* could (and probably should) use "true" 3d box here - 299 but drivers can't quite handle it yet */ 300 for (i = face; i < face + depth; i++) { 301 src_box.z = i; 302 303 if (0) { 304 print_center_pixel(pipe, src); 305 } 306 307 pipe->resource_copy_region(pipe, 308 dst, 309 dstLevel, 310 0, 0, i,/* destX, Y, Z */ 311 src, 312 srcLevel, 313 &src_box); 314 } 315} 316 317