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/*
* Mesa 3-D graphics library
*
* Copyright (C) 2015 LunarG, Inc.
*
* 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 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.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#ifndef ILO_STATE_SBE_H
#define ILO_STATE_SBE_H
#include "genhw/genhw.h"
#include "ilo_core.h"
#include "ilo_dev.h"
/*
* From the Sandy Bridge PRM, volume 2 part 1, page 264:
*
* "Number of SF Output Attributes sets the number of attributes that will
* be output from the SF stage, not including position. This can be used
* to specify up to 32, and may differ from the number of input
* attributes."
*
* "The first or last set of 16 attributes can be swizzled according to
* certain state fields."
*/
#define ILO_STATE_SBE_MAX_ATTR_COUNT 32
#define ILO_STATE_SBE_MAX_SWIZZLE_COUNT 16
struct ilo_state_sbe_swizzle_info {
/* select an attribute from read ones */
enum gen_inputattr_select attr_select;
uint8_t attr;
bool force_zeros;
};
struct ilo_state_sbe_info {
uint8_t attr_count;
/* which VUE attributes to read */
uint8_t cv_vue_attr_count;
uint8_t vue_read_base;
uint8_t vue_read_count;
bool has_min_read_count;
bool cv_is_point;
bool point_sprite_origin_lower_left;
/* force sprite coordinates to the four corner vertices of the point */
uint32_t point_sprite_enables;
/* force attr at the provoking vertex to a0 and zero to a1/a2 */
uint32_t const_interp_enables;
bool swizzle_enable;
/* swizzle attribute 16 to 31 instead; Gen7+ only */
bool swizzle_16_31;
uint8_t swizzle_count;
const struct ilo_state_sbe_swizzle_info *swizzles;
};
struct ilo_state_sbe {
uint32_t sbe[3];
uint32_t swiz[8];
};
bool
ilo_state_sbe_init(struct ilo_state_sbe *sbe,
const struct ilo_dev *dev,
const struct ilo_state_sbe_info *info);
bool
ilo_state_sbe_init_for_rectlist(struct ilo_state_sbe *sbe,
const struct ilo_dev *dev,
uint8_t read_base,
uint8_t read_count);
bool
ilo_state_sbe_set_info(struct ilo_state_sbe *sbe,
const struct ilo_dev *dev,
const struct ilo_state_sbe_info *info);
#endif /* ILO_STATE_SBE_H */
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