r300_transfer.c revision 6ccab620a0e7364ab6c0d902b3ddf58ee988f7fa
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 ctx->flush(ctx, 0, NULL); 76} 77 78struct pipe_transfer* 79r300_texture_get_transfer(struct pipe_context *ctx, 80 struct pipe_resource *texture, 81 unsigned level, 82 unsigned usage, 83 const struct pipe_box *box) 84{ 85 struct r300_context *r300 = r300_context(ctx); 86 struct r300_resource *tex = r300_resource(texture); 87 struct r300_transfer *trans; 88 struct pipe_resource base; 89 boolean referenced_cs, referenced_hw, blittable; 90 91 referenced_cs = 92 r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buf); 93 if (referenced_cs) { 94 referenced_hw = TRUE; 95 } else { 96 referenced_hw = 97 r300->rws->buffer_is_busy(tex->buf); 98 } 99 100 blittable = ctx->screen->is_format_supported( 101 ctx->screen, texture->format, texture->target, 0, 102 PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET, 0); 103 104 trans = CALLOC_STRUCT(r300_transfer); 105 if (trans) { 106 /* Initialize the transfer object. */ 107 pipe_resource_reference(&trans->transfer.resource, texture); 108 trans->transfer.level = level; 109 trans->transfer.usage = usage; 110 trans->transfer.box = *box; 111 112 /* If the texture is tiled, we must create a temporary detiled texture 113 * for this transfer. 114 * Also make write transfers pipelined. */ 115 if (tex->tex.microtile || tex->tex.macrotile[level] || 116 ((referenced_hw & !(usage & PIPE_TRANSFER_READ)) && blittable)) { 117 if (r300->blitter->running) { 118 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n"); 119 os_break(); 120 } 121 122 base.target = PIPE_TEXTURE_2D; 123 base.format = texture->format; 124 base.width0 = box->width; 125 base.height0 = box->height; 126 base.depth0 = 1; 127 base.array_size = 1; 128 base.last_level = 0; 129 base.nr_samples = 0; 130 base.usage = PIPE_USAGE_DYNAMIC; 131 base.bind = 0; 132 base.flags = R300_RESOURCE_FLAG_TRANSFER; 133 134 /* For texture reading, the temporary (detiled) texture is used as 135 * a render target when blitting from a tiled texture. */ 136 if (usage & PIPE_TRANSFER_READ) { 137 base.bind |= PIPE_BIND_RENDER_TARGET; 138 } 139 /* For texture writing, the temporary texture is used as a sampler 140 * when blitting into a tiled texture. */ 141 if (usage & PIPE_TRANSFER_WRITE) { 142 base.bind |= PIPE_BIND_SAMPLER_VIEW; 143 } 144 145 /* Create the temporary texture. */ 146 trans->linear_texture = r300_resource( 147 ctx->screen->resource_create(ctx->screen, 148 &base)); 149 150 if (!trans->linear_texture) { 151 /* Oh crap, the thing can't create the texture. 152 * Let's flush and try again. */ 153 ctx->flush(ctx, 0, NULL); 154 155 trans->linear_texture = r300_resource( 156 ctx->screen->resource_create(ctx->screen, 157 &base)); 158 159 if (!trans->linear_texture) { 160 /* For linear textures, it's safe to fallback to 161 * an unpipelined transfer. */ 162 if (!tex->tex.microtile && !tex->tex.macrotile[level]) { 163 goto unpipelined; 164 } 165 166 /* Otherwise, go to hell. */ 167 fprintf(stderr, 168 "r300: Failed to create a transfer object, praise.\n"); 169 FREE(trans); 170 return NULL; 171 } 172 } 173 174 assert(!trans->linear_texture->tex.microtile && 175 !trans->linear_texture->tex.macrotile[0]); 176 177 /* Set the stride. 178 * 179 * Even though we are using an internal texture for this, 180 * the transfer level, box and usage parameters still reflect 181 * the arguments received to get_transfer. We just do the 182 * right thing internally. 183 */ 184 trans->transfer.stride = 185 trans->linear_texture->tex.stride_in_bytes[0]; 186 187 if (usage & PIPE_TRANSFER_READ) { 188 /* We cannot map a tiled texture directly because the data is 189 * in a different order, therefore we do detiling using a blit. */ 190 r300_copy_from_tiled_texture(ctx, trans); 191 192 /* Always referenced in the blit. */ 193 ctx->flush(ctx, 0, NULL); 194 } 195 return &trans->transfer; 196 } 197 198 unpipelined: 199 /* Unpipelined transfer. */ 200 trans->transfer.stride = tex->tex.stride_in_bytes[level]; 201 trans->offset = r300_texture_get_offset(tex, level, box->z); 202 203 if (referenced_cs) 204 ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL); 205 return &trans->transfer; 206 } 207 return NULL; 208} 209 210void r300_texture_transfer_destroy(struct pipe_context *ctx, 211 struct pipe_transfer *trans) 212{ 213 struct r300_transfer *r300transfer = r300_transfer(trans); 214 215 if (r300transfer->linear_texture) { 216 if (trans->usage & PIPE_TRANSFER_WRITE) { 217 r300_copy_into_tiled_texture(ctx, r300transfer); 218 } 219 220 pipe_resource_reference( 221 (struct pipe_resource**)&r300transfer->linear_texture, NULL); 222 } 223 pipe_resource_reference(&trans->resource, NULL); 224 FREE(trans); 225} 226 227void* r300_texture_transfer_map(struct pipe_context *ctx, 228 struct pipe_transfer *transfer) 229{ 230 struct r300_context *r300 = r300_context(ctx); 231 struct r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys; 232 struct r300_transfer *r300transfer = r300_transfer(transfer); 233 struct r300_resource *tex = r300_resource(transfer->resource); 234 char *map; 235 enum pipe_format format = tex->b.b.b.format; 236 237 if (r300transfer->linear_texture) { 238 /* The detiled texture is of the same size as the region being mapped 239 * (no offset needed). */ 240 return rws->buffer_map(r300transfer->linear_texture->buf, 241 r300->cs, 242 transfer->usage); 243 } else { 244 /* Tiling is disabled. */ 245 map = rws->buffer_map(tex->buf, r300->cs, 246 transfer->usage); 247 248 if (!map) { 249 return NULL; 250 } 251 252 return map + r300_transfer(transfer)->offset + 253 transfer->box.y / util_format_get_blockheight(format) * transfer->stride + 254 transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format); 255 } 256} 257 258void r300_texture_transfer_unmap(struct pipe_context *ctx, 259 struct pipe_transfer *transfer) 260{ 261 struct r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys; 262 struct r300_transfer *r300transfer = r300_transfer(transfer); 263 struct r300_resource *tex = r300_resource(transfer->resource); 264 265 if (r300transfer->linear_texture) { 266 rws->buffer_unmap(r300transfer->linear_texture->buf); 267 } else { 268 rws->buffer_unmap(tex->buf); 269 } 270} 271