diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/Makefile.sources | 1 | ||||
| l--------- | src/mesa/drivers/dri/i965/intel_resolve_map.c | 1 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_resolve_map.c | 111 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_resolve_map.h | 83 |
4 files changed, 196 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources index 1b9ca6f2321..cd6a8f48b5a 100644 --- a/src/mesa/drivers/dri/i965/Makefile.sources +++ b/src/mesa/drivers/dri/i965/Makefile.sources @@ -15,6 +15,7 @@ i965_C_SOURCES := \ intel_fbo.c \ intel_mipmap_tree.c \ intel_regions.c \ + intel_resolve_map.c \ intel_screen.c \ intel_span.c \ intel_pixel.c \ diff --git a/src/mesa/drivers/dri/i965/intel_resolve_map.c b/src/mesa/drivers/dri/i965/intel_resolve_map.c new file mode 120000 index 00000000000..77e50fbaea4 --- /dev/null +++ b/src/mesa/drivers/dri/i965/intel_resolve_map.c @@ -0,0 +1 @@ +../intel/intel_resolve_map.c
\ No newline at end of file diff --git a/src/mesa/drivers/dri/intel/intel_resolve_map.c b/src/mesa/drivers/dri/intel/intel_resolve_map.c new file mode 100644 index 00000000000..e7d82faee11 --- /dev/null +++ b/src/mesa/drivers/dri/intel/intel_resolve_map.c @@ -0,0 +1,111 @@ +/* + * Copyright © 2011 Intel Corporation + * + * 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 + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS 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 "intel_resolve_map.h" + +#include <assert.h> +#include <stdlib.h> + +/** + * \brief Set that the miptree slice at (level, layer) needs a resolve. + * + * \pre If a map element already exists with the given key, then + * the new and existing element value must be identical. + */ +void +intel_resolve_map_set(struct intel_resolve_map *head, + uint32_t level, + uint32_t layer, + enum intel_need_resolve need) +{ + struct intel_resolve_map **tail = &head->next; + struct intel_resolve_map *prev = head; + + while (*tail) { + if ((*tail)->level == level && (*tail)->layer == layer) { + assert((*tail)->need == need); + return; + } + prev = *tail; + tail = &(*tail)->next; + } + + *tail = malloc(sizeof(**tail)); + (*tail)->prev = prev; + (*tail)->next = NULL; + (*tail)->level = level; + (*tail)->layer = layer; + (*tail)->need = need; +} + +/** + * \brief Get an element from the map. + * \return null if element is not contained in map. + */ +struct intel_resolve_map* +intel_resolve_map_get(struct intel_resolve_map *head, + uint32_t level, + uint32_t layer) +{ + struct intel_resolve_map *item = head->next; + + while (item) { + if (item->level == level && item->layer == layer) + break; + else + item = item->next; + } + + return item; +} + +/** + * \brief Remove and free an element from the map. + */ +void +intel_resolve_map_remove(struct intel_resolve_map *elem) +{ + if (elem->prev) + elem->prev->next = elem->next; + if (elem->next) + elem->next->prev = elem->prev; + free(elem); +} + +/** + * \brief Remove and free all elements of the map. + */ +void +intel_resolve_map_clear(struct intel_resolve_map *head) +{ + struct intel_resolve_map *next = head->next; + struct intel_resolve_map *trash; + + while (next) { + trash = next; + next = next->next; + free(trash); + } + + head->next = NULL; +} diff --git a/src/mesa/drivers/dri/intel/intel_resolve_map.h b/src/mesa/drivers/dri/intel/intel_resolve_map.h new file mode 100644 index 00000000000..1082c10e214 --- /dev/null +++ b/src/mesa/drivers/dri/intel/intel_resolve_map.h @@ -0,0 +1,83 @@ +/* + * Copyright © 2011 Intel Corporation + * + * 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 + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + */ + +#pragma once + +#include <stdint.h> + +enum intel_need_resolve { + INTEL_NEED_HIZ_RESOLVE, + INTEL_NEED_DEPTH_RESOLVE, +}; + +/** + * \brief Map of miptree slices to needed resolves. + * + * The map is implemented as a linear doubly-linked list. + * + * In the intel_resolve_map*() functions, the \c head argument is not + * inspected for its data. It only serves as an anchor for the list. + * + * \par Design Discussion + * + * There are two possible ways to record which miptree slices need + * resolves. 1) Maintain a flag for every miptree slice in the texture, + * likely in intel_mipmap_level::slice, or 2) maintain a list of only + * those slices that need a resolve. + * + * Immediately before drawing, a full depth resolve performed on each + * enabled depth texture. If design 1 were chosen, then at each draw call + * it would be necessary to iterate over each miptree slice of each + * enabled depth texture in order to query if each slice needed a resolve. + * In the worst case, this would require 2^16 iterations: 16 texture + * units, 16 miplevels, and 256 depth layers (assuming maximums for OpenGL + * 2.1). + * + * By choosing design 2, the number of iterations is exactly the minimum + * necessary. + */ +struct intel_resolve_map { + uint32_t level; + uint32_t layer; + enum intel_need_resolve need; + + struct intel_resolve_map *next; + struct intel_resolve_map *prev; +}; + +void +intel_resolve_map_set(struct intel_resolve_map *head, + uint32_t level, + uint32_t layer, + enum intel_need_resolve need); + +struct intel_resolve_map* +intel_resolve_map_get(struct intel_resolve_map *head, + uint32_t level, + uint32_t layer); + +void +intel_resolve_map_remove(struct intel_resolve_map *elem); + +void +intel_resolve_map_clear(struct intel_resolve_map *head); |