/* * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com> * * 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; int i; for (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 + 63) & ~63; size = stride * base->nblocksy[i] * base->depth[i]; /* XXX 64 for NPOT */ tex->offset[i] = (tex->size + 63) & ~63; 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) { /* XXX 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->buffer_create(screen, 64, 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; } static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen, struct pipe_texture* texture, unsigned face, unsigned level, unsigned zslice, unsigned flags) { struct r300_texture* tex = (struct r300_texture*)texture; struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface); unsigned offset; /* XXX this is certainly dependent on tex target */ offset = tex->offset[level]; if (surface) { surface->refcount = 1; pipe_texture_reference(&surface->texture, texture); surface->format = texture->format; surface->width = texture->width[level]; surface->height = texture->height[level]; surface->offset = offset; surface->usage = flags; surface->status = PIPE_SURFACE_STATUS_DEFINED; } return surface; } static void r300_tex_surface_release(struct pipe_screen* screen, struct pipe_surface** surface) { struct pipe_surface* s = *surface; s->refcount--; if (s->refcount <= 0) { pipe_texture_reference(&s->texture, NULL); FREE(s); } *surface = NULL; } static struct pipe_texture* r300_texture_blanket(struct pipe_screen* screen, const struct pipe_texture* base, const unsigned* stride, struct pipe_buffer* buffer) { struct r300_texture* tex; if (base->target != PIPE_TEXTURE_2D || base->last_level != 0 || base->depth[0] != 1) { return NULL; } tex = CALLOC_STRUCT(r300_texture); if (!tex) { return NULL; } tex->tex = *base; tex->tex.refcount = 1; tex->tex.screen = screen; tex->stride = *stride; pipe_buffer_reference(screen, &tex->buffer, buffer); return (struct pipe_texture*)tex; } void r300_init_screen_texture_functions(struct pipe_screen* screen) { screen->texture_create = r300_texture_create; screen->texture_release = r300_texture_release; screen->get_tex_surface = r300_get_tex_surface; screen->tex_surface_release = r300_tex_surface_release; screen->texture_blanket = r300_texture_blanket; } boolean r300_get_texture_buffer(struct pipe_texture* texture, struct pipe_buffer** buffer, unsigned* stride) { struct r300_texture* tex = (struct r300_texture*)texture; if (!tex) { return FALSE; } pipe_buffer_reference(texture->screen, buffer, tex->buffer); if (stride) { *stride = tex->stride; } return TRUE; }