diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_texture.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_texture.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c new file mode 100644 index 00000000000..bd35e089f98 --- /dev/null +++ b/src/gallium/drivers/r300/r300_texture.c @@ -0,0 +1,193 @@ +/* + * Copyright 2008 Corbin Simpson <[email protected]> + * + * 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 + 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->block = texture->block; + surface->nblocksx = texture->nblocksx[level]; + surface->nblocksy = texture->nblocksy[level]; + /* XXX save the actual stride instead plz kthnxbai */ + surface->stride = + (texture->nblocksx[level] * texture->block.size + 63) & ~63; + 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; + + /* XXX 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; +} |