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/*
* Copyright © 2018 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.
*/
#ifndef NIR_XFB_INFO_H
#define NIR_XFB_INFO_H
#include "nir.h"
#define NIR_MAX_XFB_BUFFERS 4
#define NIR_MAX_XFB_STREAMS 4
typedef struct {
uint16_t stride;
uint16_t varying_count;
} nir_xfb_buffer_info;
typedef struct {
uint8_t buffer;
uint16_t offset;
uint8_t location;
uint8_t component_mask;
uint8_t component_offset;
} nir_xfb_output_info;
typedef struct {
const struct glsl_type *type;
uint8_t buffer;
uint16_t offset;
} nir_xfb_varying_info;
typedef struct nir_xfb_info {
uint8_t buffers_written;
uint8_t streams_written;
nir_xfb_buffer_info buffers[NIR_MAX_XFB_BUFFERS];
uint8_t buffer_to_stream[NIR_MAX_XFB_STREAMS];
uint16_t output_count;
nir_xfb_output_info outputs[0];
} nir_xfb_info;
typedef struct nir_xfb_varyings_info {
uint16_t varying_count;
nir_xfb_varying_info varyings[0];
} nir_xfb_varyings_info;
static inline size_t
nir_xfb_info_size(uint16_t output_count)
{
return sizeof(nir_xfb_info) + sizeof(nir_xfb_output_info) * output_count;
}
nir_xfb_info *
nir_gather_xfb_info(const nir_shader *shader, void *mem_ctx);
nir_xfb_info *
nir_gather_xfb_info_with_varyings(const nir_shader *shader,
void *mem_ctx,
nir_xfb_varyings_info **varyings_info);
#endif /* NIR_XFB_INFO_H */
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