1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 2014 Intel Corporation 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 "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: 25 * Jason Ekstrand <jason.ekstrand (at) intel.com> 26 */ 27 28 #include "brw_blorp.h" 29 #include "intel_fbo.h" 30 #include "intel_tex.h" 31 #include "intel_blit.h" 32 #include "intel_mipmap_tree.h" 33 #include "main/formats.h" 34 #include "main/teximage.h" 35 #include "drivers/common/meta.h" 36 37 static void 38 copy_image_with_memcpy(struct brw_context *brw, 39 struct intel_mipmap_tree *src_mt, int src_level, 40 int src_x, int src_y, int src_z, 41 struct intel_mipmap_tree *dst_mt, int dst_level, 42 int dst_x, int dst_y, int dst_z, 43 int src_width, int src_height) 44 { 45 bool same_slice; 46 void *mapped, *src_mapped, *dst_mapped; 47 ptrdiff_t src_stride, dst_stride, cpp; 48 int map_x1, map_y1, map_x2, map_y2; 49 GLuint src_bw, src_bh; 50 51 cpp = _mesa_get_format_bytes(src_mt->format); 52 _mesa_get_format_block_size(src_mt->format, &src_bw, &src_bh); 53 54 assert(src_width % src_bw == 0); 55 assert(src_height % src_bh == 0); 56 assert(src_x % src_bw == 0); 57 assert(src_y % src_bh == 0); 58 59 /* If we are on the same miptree, same level, and same slice, then 60 * intel_miptree_map won't let us map it twice. We have to do things a 61 * bit differently. In particular, we do a single map large enough for 62 * both portions and in read-write mode. 63 */ 64 same_slice = src_mt == dst_mt && src_level == dst_level && src_z == dst_z; 65 66 if (same_slice) { 67 assert(dst_x % src_bw == 0); 68 assert(dst_y % src_bh == 0); 69 70 map_x1 = MIN2(src_x, dst_x); 71 map_y1 = MIN2(src_y, dst_y); 72 map_x2 = MAX2(src_x, dst_x) + src_width; 73 map_y2 = MAX2(src_y, dst_y) + src_height; 74 75 intel_miptree_map(brw, src_mt, src_level, src_z, 76 map_x1, map_y1, map_x2 - map_x1, map_y2 - map_y1, 77 GL_MAP_READ_BIT | GL_MAP_WRITE_BIT, 78 &mapped, &src_stride); 79 80 dst_stride = src_stride; 81 82 /* Set the offsets here so we don't have to think about while looping */ 83 src_mapped = mapped + ((src_y - map_y1) / src_bh) * src_stride + 84 ((src_x - map_x1) / src_bw) * cpp; 85 dst_mapped = mapped + ((dst_y - map_y1) / src_bh) * dst_stride + 86 ((dst_x - map_x1) / src_bw) * cpp; 87 } else { 88 intel_miptree_map(brw, src_mt, src_level, src_z, 89 src_x, src_y, src_width, src_height, 90 GL_MAP_READ_BIT, &src_mapped, &src_stride); 91 intel_miptree_map(brw, dst_mt, dst_level, dst_z, 92 dst_x, dst_y, src_width, src_height, 93 GL_MAP_WRITE_BIT, &dst_mapped, &dst_stride); 94 } 95 96 src_width /= (int)src_bw; 97 src_height /= (int)src_bh; 98 99 for (int i = 0; i < src_height; ++i) { 100 memcpy(dst_mapped, src_mapped, src_width * cpp); 101 src_mapped += src_stride; 102 dst_mapped += dst_stride; 103 } 104 105 if (same_slice) { 106 intel_miptree_unmap(brw, src_mt, src_level, src_z); 107 } else { 108 intel_miptree_unmap(brw, dst_mt, dst_level, dst_z); 109 intel_miptree_unmap(brw, src_mt, src_level, src_z); 110 } 111 } 112 113 static void 114 copy_miptrees(struct brw_context *brw, 115 struct intel_mipmap_tree *src_mt, 116 int src_x, int src_y, int src_z, unsigned src_level, 117 struct intel_mipmap_tree *dst_mt, 118 int dst_x, int dst_y, int dst_z, unsigned dst_level, 119 int src_width, int src_height) 120 { 121 unsigned bw, bh; 122 123 if (brw->gen >= 6) { 124 brw_blorp_copy_miptrees(brw, 125 src_mt, src_level, src_z, 126 dst_mt, dst_level, dst_z, 127 src_x, src_y, dst_x, dst_y, 128 src_width, src_height); 129 return; 130 } 131 132 /* We are now going to try and copy the texture using the blitter. If 133 * that fails, we will fall back mapping the texture and using memcpy. 134 * In either case, we need to do a full resolve. 135 */ 136 intel_miptree_all_slices_resolve_hiz(brw, src_mt); 137 intel_miptree_all_slices_resolve_depth(brw, src_mt); 138 intel_miptree_all_slices_resolve_color(brw, src_mt, 0); 139 140 intel_miptree_all_slices_resolve_hiz(brw, dst_mt); 141 intel_miptree_all_slices_resolve_depth(brw, dst_mt); 142 intel_miptree_all_slices_resolve_color(brw, dst_mt, 0); 143 144 _mesa_get_format_block_size(src_mt->format, &bw, &bh); 145 146 /* It's legal to have a WxH that's smaller than a compressed block. This 147 * happens for example when you are using a higher level LOD. For this case, 148 * we still want to copy the entire block, or else the decompression will be 149 * incorrect. 150 */ 151 if (src_width < bw) 152 src_width = ALIGN_NPOT(src_width, bw); 153 154 if (src_height < bh) 155 src_height = ALIGN_NPOT(src_height, bh); 156 157 if (intel_miptree_copy(brw, src_mt, src_level, src_z, src_x, src_y, 158 dst_mt, dst_level, dst_z, dst_x, dst_y, 159 src_width, src_height)) 160 return; 161 162 /* This is a worst-case scenario software fallback that maps the two 163 * textures and does a memcpy between them. 164 */ 165 copy_image_with_memcpy(brw, src_mt, src_level, 166 src_x, src_y, src_z, 167 dst_mt, dst_level, 168 dst_x, dst_y, dst_z, 169 src_width, src_height); 170 } 171 172 static void 173 intel_copy_image_sub_data(struct gl_context *ctx, 174 struct gl_texture_image *src_image, 175 struct gl_renderbuffer *src_renderbuffer, 176 int src_x, int src_y, int src_z, 177 struct gl_texture_image *dst_image, 178 struct gl_renderbuffer *dst_renderbuffer, 179 int dst_x, int dst_y, int dst_z, 180 int src_width, int src_height) 181 { 182 struct brw_context *brw = brw_context(ctx); 183 struct intel_mipmap_tree *src_mt, *dst_mt; 184 unsigned src_level, dst_level; 185 186 if (src_image) { 187 src_mt = intel_texture_image(src_image)->mt; 188 src_level = src_image->Level + src_image->TexObject->MinLevel; 189 190 /* Cube maps actually have different images per face */ 191 if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP) 192 src_z = src_image->Face; 193 194 src_z += src_image->TexObject->MinLayer; 195 } else { 196 assert(src_renderbuffer); 197 src_mt = intel_renderbuffer(src_renderbuffer)->mt; 198 src_image = src_renderbuffer->TexImage; 199 src_level = 0; 200 } 201 202 if (dst_image) { 203 dst_mt = intel_texture_image(dst_image)->mt; 204 205 dst_level = dst_image->Level + dst_image->TexObject->MinLevel; 206 207 /* Cube maps actually have different images per face */ 208 if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP) 209 dst_z = dst_image->Face; 210 211 dst_z += dst_image->TexObject->MinLayer; 212 } else { 213 assert(dst_renderbuffer); 214 dst_mt = intel_renderbuffer(dst_renderbuffer)->mt; 215 dst_image = dst_renderbuffer->TexImage; 216 dst_level = 0; 217 } 218 219 copy_miptrees(brw, src_mt, src_x, src_y, src_z, src_level, 220 dst_mt, dst_x, dst_y, dst_z, dst_level, 221 src_width, src_height); 222 223 /* CopyImage only works for equal formats, texture view equivalence 224 * classes, and a couple special cases for compressed textures. 225 * 226 * Notably, GL_DEPTH_STENCIL does not appear in any equivalence 227 * classes, so we know the formats must be the same, and thus both 228 * will either have stencil, or not. They can't be mismatched. 229 */ 230 assert((src_mt->stencil_mt != NULL) == (dst_mt->stencil_mt != NULL)); 231 232 if (dst_mt->stencil_mt) { 233 copy_miptrees(brw, src_mt->stencil_mt, src_x, src_y, src_z, src_level, 234 dst_mt->stencil_mt, dst_x, dst_y, dst_z, dst_level, 235 src_width, src_height); 236 } 237 } 238 239 void 240 intelInitCopyImageFuncs(struct dd_function_table *functions) 241 { 242 functions->CopyImageSubData = intel_copy_image_sub_data; 243 } 244
