st_texture.c revision 7f15dca6d963b0a69131e8761c477064dba49307
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.usage = PIPE_USAGE_DEFAULT; 88 pt.bind = bind; 89 pt.flags = 0; 90 91 newtex = screen->resource_create(screen, &pt); 92 93 assert(!newtex || pipe_is_referenced(&newtex->reference)); 94 95 return newtex; 96} 97 98 99/** 100 * Check if a texture image can be pulled into a unified mipmap texture. 101 */ 102GLboolean 103st_texture_match_image(const struct pipe_resource *pt, 104 const struct gl_texture_image *image, 105 GLuint face, GLuint level) 106{ 107 /* Images with borders are never pulled into mipmap textures. 108 */ 109 if (image->Border) 110 return GL_FALSE; 111 112 /* Check if this image's format matches the established texture's format. 113 */ 114 if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format) 115 return GL_FALSE; 116 117 /* Test if this image's size matches what's expected in the 118 * established texture. 119 */ 120 if (image->Width != u_minify(pt->width0, level) || 121 image->Height != u_minify(pt->height0, level) || 122 image->Depth != u_minify(pt->depth0, level)) 123 return GL_FALSE; 124 125 return GL_TRUE; 126} 127 128 129/** 130 * Map a texture image and return the address for a particular 2D face/slice/ 131 * layer. The stImage indicates the cube face and mipmap level. The slice 132 * of the 3D texture is passed in 'zoffset'. 133 * \param usage one of the PIPE_TRANSFER_x values 134 * \param x, y, w, h the region of interest of the 2D image. 135 * \return address of mapping or NULL if any error 136 */ 137GLubyte * 138st_texture_image_map(struct st_context *st, struct st_texture_image *stImage, 139 GLuint zoffset, enum pipe_transfer_usage usage, 140 GLuint x, GLuint y, GLuint w, GLuint h) 141{ 142 struct pipe_context *pipe = st->pipe; 143 struct pipe_resource *pt = stImage->pt; 144 145 DBG("%s \n", __FUNCTION__); 146 147 stImage->transfer = pipe_get_transfer(st->pipe, pt, stImage->face, 148 stImage->level, zoffset, 149 usage, x, y, w, h); 150 151 if (stImage->transfer) 152 return pipe_transfer_map(pipe, stImage->transfer); 153 else 154 return NULL; 155} 156 157 158void 159st_texture_image_unmap(struct st_context *st, 160 struct st_texture_image *stImage) 161{ 162 struct pipe_context *pipe = st->pipe; 163 164 DBG("%s\n", __FUNCTION__); 165 166 pipe_transfer_unmap(pipe, stImage->transfer); 167 168 pipe->transfer_destroy(pipe, stImage->transfer); 169} 170 171 172 173/** 174 * Upload data to a rectangular sub-region. Lots of choices how to do this: 175 * 176 * - memcpy by span to current destination 177 * - upload data as new buffer and blit 178 * 179 * Currently always memcpy. 180 */ 181static void 182st_surface_data(struct pipe_context *pipe, 183 struct pipe_transfer *dst, 184 unsigned dstx, unsigned dsty, 185 const void *src, unsigned src_stride, 186 unsigned srcx, unsigned srcy, unsigned width, unsigned height) 187{ 188 void *map = pipe_transfer_map(pipe, dst); 189 190 assert(dst->resource); 191 util_copy_rect(map, 192 dst->resource->format, 193 dst->stride, 194 dstx, dsty, 195 width, height, 196 src, src_stride, 197 srcx, srcy); 198 199 pipe_transfer_unmap(pipe, dst); 200} 201 202 203/* Upload data for a particular image. 204 */ 205void 206st_texture_image_data(struct st_context *st, 207 struct pipe_resource *dst, 208 GLuint face, 209 GLuint level, 210 void *src, 211 GLuint src_row_stride, GLuint src_image_stride) 212{ 213 struct pipe_context *pipe = st->pipe; 214 GLuint depth = u_minify(dst->depth0, level); 215 GLuint i; 216 const GLubyte *srcUB = src; 217 struct pipe_transfer *dst_transfer; 218 219 DBG("%s\n", __FUNCTION__); 220 221 for (i = 0; i < depth; i++) { 222 dst_transfer = pipe_get_transfer(st->pipe, dst, face, level, i, 223 PIPE_TRANSFER_WRITE, 0, 0, 224 u_minify(dst->width0, level), 225 u_minify(dst->height0, level)); 226 227 st_surface_data(pipe, dst_transfer, 228 0, 0, /* dstx, dsty */ 229 srcUB, 230 src_row_stride, 231 0, 0, /* source x, y */ 232 u_minify(dst->width0, level), 233 u_minify(dst->height0, level)); /* width, height */ 234 235 pipe->transfer_destroy(pipe, dst_transfer); 236 237 srcUB += src_image_stride; 238 } 239} 240 241 242/** 243 * For debug only: get/print center pixel in the src resource. 244 */ 245static void 246print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src) 247{ 248 struct pipe_subresource rect; 249 struct pipe_transfer *xfer; 250 struct pipe_box region; 251 ubyte *map; 252 253 rect.face = 0; 254 rect.level = 0; 255 256 region.x = src->width0 / 2; 257 region.y = src->height0 / 2; 258 region.z = 0; 259 region.width = 1; 260 region.height = 1; 261 region.depth = 1; 262 263 xfer = pipe->get_transfer(pipe, src, rect, PIPE_TRANSFER_READ, ®ion); 264 map = pipe->transfer_map(pipe, xfer); 265 266 printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]); 267 268 pipe->transfer_unmap(pipe, xfer); 269 pipe->transfer_destroy(pipe, xfer); 270} 271 272 273/** 274 * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'. 275 * This is used to copy mipmap images from one texture buffer to another. 276 * This typically happens when our initial guess at the total texture size 277 * is incorrect (see the guess_and_alloc_texture() function). 278 */ 279void 280st_texture_image_copy(struct pipe_context *pipe, 281 struct pipe_resource *dst, GLuint dstLevel, 282 struct pipe_resource *src, GLuint srcLevel, 283 GLuint face) 284{ 285 GLuint width = u_minify(dst->width0, dstLevel); 286 GLuint height = u_minify(dst->height0, dstLevel); 287 GLuint depth = u_minify(dst->depth0, dstLevel); 288 struct pipe_subresource dstsub, srcsub; 289 GLuint i; 290 291 assert(u_minify(src->width0, srcLevel) == width); 292 assert(u_minify(src->height0, srcLevel) == height); 293 assert(u_minify(src->depth0, srcLevel) == depth); 294 295 dstsub.face = face; 296 dstsub.level = dstLevel; 297 srcsub.face = face; 298 srcsub.level = srcLevel; 299 /* Loop over 3D image slices */ 300 for (i = 0; i < depth; i++) { 301 302 if (0) { 303 print_center_pixel(pipe, src); 304 } 305 306 pipe->resource_copy_region(pipe, 307 dst, 308 dstsub, 309 0, 0, i,/* destX, Y, Z */ 310 src, 311 srcsub, 312 0, 0, i,/* srcX, Y, Z */ 313 width, height); 314 } 315} 316 317