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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_SOL_H
#define ILO_STATE_SOL_H
#include "genhw/genhw.h"
#include "ilo_core.h"
#include "ilo_dev.h"
/*
* From the Ivy Bridge PRM, volume 2 part 1, page 193:
*
* "Incoming topologies are tagged with a 2-bit StreamID."
*/
#define ILO_STATE_SOL_MAX_STREAM_COUNT 4
/*
* From the Ivy Bridge PRM, volume 2 part 1, page 195:
*
* "Up to four SO buffers are supported."
*/
#define ILO_STATE_SOL_MAX_BUFFER_COUNT 4
/*
* From the Ivy Bridge PRM, volume 2 part 1, page 201:
*
* "All 128 decls..."
*/
#define ILO_STATE_SOL_MAX_DECL_COUNT 128
/**
* Output a vertex attribute.
*/
struct ilo_state_sol_decl_info {
/* select an attribute from read ones */
uint8_t attr;
bool is_hole;
/* which components to write */
uint8_t component_base;
uint8_t component_count;
/* destination buffer */
uint8_t buffer;
};
struct ilo_state_sol_stream_info {
/* which VUE attributes to read */
uint8_t cv_vue_attr_count;
uint8_t vue_read_base;
uint8_t vue_read_count;
uint8_t decl_count;
const struct ilo_state_sol_decl_info *decls;
};
struct ilo_state_sol_info {
void *data;
size_t data_size;
bool sol_enable;
bool stats_enable;
enum gen_reorder_mode tristrip_reorder;
bool render_disable;
/* ignored when SOL is disabled */
uint8_t render_stream;
/* a buffer is disabled when its stride is zero */
uint16_t buffer_strides[ILO_STATE_SOL_MAX_BUFFER_COUNT];
struct ilo_state_sol_stream_info streams[ILO_STATE_SOL_MAX_STREAM_COUNT];
};
struct ilo_state_sol {
uint32_t streamout[2];
uint16_t strides[4];
uint32_t so_decl[2];
uint32_t (*decl)[2];
uint8_t decl_count;
};
struct ilo_vma;
struct ilo_state_sol_buffer_info {
const struct ilo_vma *vma;
uint32_t offset;
uint32_t size;
/* Gen8+ only; at least sizeof(uint32_t) bytes */
const struct ilo_vma *write_offset_vma;
uint32_t write_offset_offset;
bool write_offset_load;
bool write_offset_save;
bool write_offset_imm_enable;
uint32_t write_offset_imm;
};
struct ilo_state_sol_buffer {
uint32_t so_buf[5];
const struct ilo_vma *vma;
const struct ilo_vma *write_offset_vma;
};
static inline size_t
ilo_state_sol_data_size(const struct ilo_dev *dev, uint8_t max_decl_count)
{
const struct ilo_state_sol *so = NULL;
return (ilo_dev_gen(dev) >= ILO_GEN(7)) ?
sizeof(so->decl[0]) * max_decl_count : 0;
}
bool
ilo_state_sol_init(struct ilo_state_sol *sol,
const struct ilo_dev *dev,
const struct ilo_state_sol_info *info);
bool
ilo_state_sol_init_disabled(struct ilo_state_sol *sol,
const struct ilo_dev *dev,
bool render_disable);
uint32_t
ilo_state_sol_buffer_size(const struct ilo_dev *dev, uint32_t size,
uint32_t *alignment);
bool
ilo_state_sol_buffer_init(struct ilo_state_sol_buffer *sb,
const struct ilo_dev *dev,
const struct ilo_state_sol_buffer_info *info);
bool
ilo_state_sol_buffer_init_disabled(struct ilo_state_sol_buffer *sb,
const struct ilo_dev *dev);
#endif /* ILO_STATE_SOL_H */
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