/* * Copyright 2008 Corbin Simpson * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * on the rights to use, copy, modify, merge, publish, distribute, sub * license, and/or sell copies of the Software, and to permit persons to whom * the Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "r300_texture.h" static int minify(int i) { return MAX2(1, i >> 1); } static void r300_setup_miptree(struct r300_texture* tex) { struct pipe_texture* base = &tex->tex; int stride, size, offset; for (int i = 0; i <= base->last_level; i++) { if (i > 0) { base->width[i] = minify(base->width[i-1]); base->height[i] = minify(base->height[i-1]); base->depth[i] = minify(base->depth[i-1]); } base->nblocksx[i] = pf_get_nblocksx(&base->block, base->width[i]); base->nblocksy[i] = pf_get_nblocksy(&base->block, base->width[i]); /* Radeons enjoy things in multiples of 32. */ /* XXX NPOT -> 64, not 32 */ stride = (base->nblocksx[i] * base->block.size + 31) & ~31; size = stride * base->nblocksy[i] * base->depth[i]; /* XXX 64 for NPOT */ tex->offset[i] = (tex->size + 31) & ~31; tex->size = tex->offset[i] + size; } } /* Create a new texture. */ static struct pipe_texture* r300_texture_create(struct pipe_screen* screen, const struct pipe_texture* template) { struct r300_screen* r300screen = r300_screen(screen); struct r300_texture* tex = CALLOC_STRUCT(r300_texture); if (!tex) { return NULL; } tex->tex = *template; tex->tex.refcount = 1; tex->tex.screen = screen; r300_setup_miptree(tex); tex->buffer = screen->winsys->buffer_create(screen->winsys, 32, PIPE_BUFFER_USAGE_PIXEL, tex->size); if (!tex->buffer) { FREE(tex); return NULL; } return (struct pipe_texture*)tex; } static void r300_texture_release(struct pipe_screen* screen, struct pipe_texture** texture) { if (!*texture) { return; } (*texture)->refcount--; if ((*texture)->refcount <= 0) { struct r300_texture* tex = (struct r300_texture*)*texture; pipe_buffer_reference(screen, &tex->buffer, NULL); FREE(tex); } *texture = NULL; } void r300_init_screen_texture_functions(struct pipe_screen* screen) { screen->texture_create = r300_texture_create; screen->texture_release = r300_texture_release; }