r300_transfer.c revision 5650a719f0c69c00954e47bd7a7b3e9433cb551d
1/* 2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com> 3 * Copyright 2010 Marek Olšák <maraeo@gmail.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * on the rights to use, copy, modify, merge, publish, distribute, sub 9 * license, and/or sell copies of the Software, and to permit persons to whom 10 * the Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */ 23 24#include "r300_transfer.h" 25#include "r300_texture_desc.h" 26#include "r300_screen_buffer.h" 27 28#include "util/u_memory.h" 29#include "util/u_format.h" 30#include "util/u_box.h" 31 32struct r300_transfer { 33 /* Parent class */ 34 struct pipe_transfer transfer; 35 36 /* Offset from start of buffer. */ 37 unsigned offset; 38 39 /* Linear texture. */ 40 struct r300_resource *linear_texture; 41}; 42 43/* Convenience cast wrapper. */ 44static INLINE struct r300_transfer* 45r300_transfer(struct pipe_transfer* transfer) 46{ 47 return (struct r300_transfer*)transfer; 48} 49 50/* Copy from a tiled texture to a detiled one. */ 51static void r300_copy_from_tiled_texture(struct pipe_context *ctx, 52 struct r300_transfer *r300transfer) 53{ 54 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer; 55 struct pipe_resource *tex = transfer->resource; 56 57 ctx->resource_copy_region(ctx, &r300transfer->linear_texture->b.b.b, 0, 58 0, 0, 0, 59 tex, transfer->level, &transfer->box); 60} 61 62/* Copy a detiled texture to a tiled one. */ 63static void r300_copy_into_tiled_texture(struct pipe_context *ctx, 64 struct r300_transfer *r300transfer) 65{ 66 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer; 67 struct pipe_resource *tex = transfer->resource; 68 struct pipe_box src_box; 69 u_box_origin_2d(transfer->box.width, transfer->box.height, &src_box); 70 71 ctx->resource_copy_region(ctx, tex, transfer->level, 72 transfer->box.x, transfer->box.y, transfer->box.z, 73 &r300transfer->linear_texture->b.b.b, 0, &src_box); 74 75 /* XXX remove this. */ 76 ctx->flush(ctx, 0, NULL); 77} 78 79struct pipe_transfer* 80r300_texture_get_transfer(struct pipe_context *ctx, 81 struct pipe_resource *texture, 82 unsigned level, 83 unsigned usage, 84 const struct pipe_box *box) 85{ 86 struct r300_context *r300 = r300_context(ctx); 87 struct r300_resource *tex = r300_resource(texture); 88 struct r300_transfer *trans; 89 struct pipe_resource base; 90 boolean referenced_cs, referenced_hw, blittable; 91 const struct util_format_description *desc = 92 util_format_description(texture->format); 93 94 referenced_cs = 95 r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buf); 96 if (referenced_cs) { 97 referenced_hw = TRUE; 98 } else { 99 referenced_hw = 100 r300->rws->buffer_is_busy(tex->buf); 101 } 102 103 blittable = desc->layout == UTIL_FORMAT_LAYOUT_PLAIN || 104 desc->layout == UTIL_FORMAT_LAYOUT_S3TC || 105 desc->layout == UTIL_FORMAT_LAYOUT_RGTC; 106 107 trans = CALLOC_STRUCT(r300_transfer); 108 if (trans) { 109 /* Initialize the transfer object. */ 110 pipe_resource_reference(&trans->transfer.resource, texture); 111 trans->transfer.level = level; 112 trans->transfer.usage = usage; 113 trans->transfer.box = *box; 114 115 /* If the texture is tiled, we must create a temporary detiled texture 116 * for this transfer. 117 * Also make write transfers pipelined. */ 118 if (tex->tex.microtile || tex->tex.macrotile[level] || 119 (referenced_hw && blittable && !(usage & PIPE_TRANSFER_READ))) { 120 if (r300->blitter->running) { 121 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n"); 122 os_break(); 123 } 124 125 base.target = PIPE_TEXTURE_2D; 126 base.format = texture->format; 127 base.width0 = box->width; 128 base.height0 = box->height; 129 base.depth0 = 1; 130 base.array_size = 1; 131 base.last_level = 0; 132 base.nr_samples = 0; 133 base.usage = PIPE_USAGE_DYNAMIC; 134 base.bind = 0; 135 base.flags = R300_RESOURCE_FLAG_TRANSFER; 136 137 /* For texture reading, the temporary (detiled) texture is used as 138 * a render target when blitting from a tiled texture. */ 139 if (usage & PIPE_TRANSFER_READ) { 140 base.bind |= PIPE_BIND_RENDER_TARGET; 141 } 142 /* For texture writing, the temporary texture is used as a sampler 143 * when blitting into a tiled texture. */ 144 if (usage & PIPE_TRANSFER_WRITE) { 145 base.bind |= PIPE_BIND_SAMPLER_VIEW; 146 } 147 148 /* Create the temporary texture. */ 149 trans->linear_texture = r300_resource( 150 ctx->screen->resource_create(ctx->screen, 151 &base)); 152 153 if (!trans->linear_texture) { 154 /* Oh crap, the thing can't create the texture. 155 * Let's flush and try again. */ 156 r300_flush(ctx, 0, NULL); 157 158 trans->linear_texture = r300_resource( 159 ctx->screen->resource_create(ctx->screen, 160 &base)); 161 162 if (!trans->linear_texture) { 163 /* For linear textures, it's safe to fallback to 164 * an unpipelined transfer. */ 165 if (!tex->tex.microtile && !tex->tex.macrotile[level]) { 166 goto unpipelined; 167 } 168 169 /* Otherwise, go to hell. */ 170 fprintf(stderr, 171 "r300: Failed to create a transfer object, praise.\n"); 172 FREE(trans); 173 return NULL; 174 } 175 } 176 177 assert(!trans->linear_texture->tex.microtile && 178 !trans->linear_texture->tex.macrotile[0]); 179 180 /* Set the stride. */ 181 trans->transfer.stride = 182 trans->linear_texture->tex.stride_in_bytes[0]; 183 184 if (usage & PIPE_TRANSFER_READ) { 185 /* We cannot map a tiled texture directly because the data is 186 * in a different order, therefore we do detiling using a blit. */ 187 r300_copy_from_tiled_texture(ctx, trans); 188 189 /* Always referenced in the blit. */ 190 r300_flush(ctx, 0, NULL); 191 } 192 return &trans->transfer; 193 } 194 195 unpipelined: 196 /* Unpipelined transfer. */ 197 trans->transfer.stride = tex->tex.stride_in_bytes[level]; 198 trans->offset = r300_texture_get_offset(tex, level, box->z); 199 200 if (referenced_cs && 201 !(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) 202 r300_flush(ctx, 0, NULL); 203 return &trans->transfer; 204 } 205 return NULL; 206} 207 208void r300_texture_transfer_destroy(struct pipe_context *ctx, 209 struct pipe_transfer *trans) 210{ 211 struct r300_transfer *r300transfer = r300_transfer(trans); 212 213 if (r300transfer->linear_texture) { 214 if (trans->usage & PIPE_TRANSFER_WRITE) { 215 r300_copy_into_tiled_texture(ctx, r300transfer); 216 } 217 218 pipe_resource_reference( 219 (struct pipe_resource**)&r300transfer->linear_texture, NULL); 220 } 221 pipe_resource_reference(&trans->resource, NULL); 222 FREE(trans); 223} 224 225void* r300_texture_transfer_map(struct pipe_context *ctx, 226 struct pipe_transfer *transfer) 227{ 228 struct r300_context *r300 = r300_context(ctx); 229 struct r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys; 230 struct r300_transfer *r300transfer = r300_transfer(transfer); 231 struct r300_resource *tex = r300_resource(transfer->resource); 232 char *map; 233 enum pipe_format format = tex->b.b.b.format; 234 235 if (r300transfer->linear_texture) { 236 /* The detiled texture is of the same size as the region being mapped 237 * (no offset needed). */ 238 return rws->buffer_map(r300transfer->linear_texture->buf, 239 r300->cs, 240 transfer->usage); 241 } else { 242 /* Tiling is disabled. */ 243 map = rws->buffer_map(tex->buf, r300->cs, 244 transfer->usage); 245 246 if (!map) { 247 return NULL; 248 } 249 250 return map + r300_transfer(transfer)->offset + 251 transfer->box.y / util_format_get_blockheight(format) * transfer->stride + 252 transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format); 253 } 254} 255 256void r300_texture_transfer_unmap(struct pipe_context *ctx, 257 struct pipe_transfer *transfer) 258{ 259 struct r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys; 260 struct r300_transfer *r300transfer = r300_transfer(transfer); 261 struct r300_resource *tex = r300_resource(transfer->resource); 262 263 if (r300transfer->linear_texture) { 264 rws->buffer_unmap(r300transfer->linear_texture->buf); 265 } else { 266 rws->buffer_unmap(tex->buf); 267 } 268} 269