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/**************************************************************************
*
* Copyright 2007 VMware, Inc.
* All Rights Reserved.
* Copyright 2010 VMware, Inc. All rights reserved.
*
* 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, 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 VMWARE AND/OR ITS 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.
*
**************************************************************************/
#ifndef SP_TEX_SAMPLE_H
#define SP_TEX_SAMPLE_H
#include "tgsi/tgsi_exec.h"
struct sp_sampler_view;
struct sp_sampler;
typedef void (*wrap_nearest_func)(float s,
unsigned size,
int offset,
int *icoord);
typedef void (*wrap_linear_func)(float s,
unsigned size,
int offset,
int *icoord0,
int *icoord1,
float *w);
typedef float (*compute_lambda_func)(const struct sp_sampler_view *sp_sview,
const float s[TGSI_QUAD_SIZE],
const float t[TGSI_QUAD_SIZE],
const float p[TGSI_QUAD_SIZE]);
typedef float (*compute_lambda_from_grad_func)(const struct sp_sampler_view *sp_sview,
const float derivs[3][2][TGSI_QUAD_SIZE],
uint quad);
struct img_filter_args {
float s;
float t;
float p;
unsigned level;
unsigned face_id;
const int8_t *offset;
bool gather_only;
int gather_comp;
};
typedef void (*img_filter_func)(const struct sp_sampler_view *sp_sview,
const struct sp_sampler *sp_samp,
const struct img_filter_args *args,
float *rgba);
struct filter_args {
enum tgsi_sampler_control control;
const int8_t *offset;
const uint *faces;
};
typedef void (*mip_filter_func)(const struct sp_sampler_view *sp_sview,
const struct sp_sampler *sp_samp,
img_filter_func min_filter,
img_filter_func mag_filter,
const float s[TGSI_QUAD_SIZE],
const float t[TGSI_QUAD_SIZE],
const float p[TGSI_QUAD_SIZE],
int gather_comp,
const float lod[TGSI_QUAD_SIZE],
const struct filter_args *args,
float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
typedef void (*mip_level_func)(const struct sp_sampler_view *sp_sview,
const struct sp_sampler *sp_samp,
const float lod[TGSI_QUAD_SIZE],
float level[TGSI_QUAD_SIZE]);
typedef void (*fetch_func)(struct sp_sampler_view *sp_sview,
const int i[TGSI_QUAD_SIZE],
const int j[TGSI_QUAD_SIZE], const int k[TGSI_QUAD_SIZE],
const int lod[TGSI_QUAD_SIZE], const int8_t offset[3],
float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]);
struct sp_sampler_view
{
struct pipe_sampler_view base;
/* For sp_get_samples_2d_linear_POT:
*/
unsigned xpot;
unsigned ypot;
boolean need_swizzle;
boolean pot2d;
boolean need_cube_convert;
/* these are different per shader type */
struct softpipe_tex_tile_cache *cache;
compute_lambda_func compute_lambda;
compute_lambda_from_grad_func compute_lambda_from_grad;
};
struct sp_filter_funcs {
mip_level_func relative_level;
mip_filter_func filter;
};
struct sp_sampler {
struct pipe_sampler_state base;
boolean min_mag_equal_repeat_linear;
boolean min_mag_equal;
unsigned min_img_filter;
wrap_nearest_func nearest_texcoord_s;
wrap_nearest_func nearest_texcoord_t;
wrap_nearest_func nearest_texcoord_p;
wrap_linear_func linear_texcoord_s;
wrap_linear_func linear_texcoord_t;
wrap_linear_func linear_texcoord_p;
const struct sp_filter_funcs *filter_funcs;
};
/**
* Subclass of tgsi_sampler
*/
struct sp_tgsi_sampler
{
struct tgsi_sampler base; /**< base class */
struct sp_sampler *sp_sampler[PIPE_MAX_SAMPLERS];
struct sp_sampler_view sp_sview[PIPE_MAX_SHADER_SAMPLER_VIEWS];
};
compute_lambda_func
softpipe_get_lambda_func(const struct pipe_sampler_view *view,
enum pipe_shader_type shader);
compute_lambda_from_grad_func
softpipe_get_lambda_from_grad_func(const struct pipe_sampler_view *view,
enum pipe_shader_type shader);
void *
softpipe_create_sampler_state(struct pipe_context *pipe,
const struct pipe_sampler_state *sampler);
struct pipe_sampler_view *
softpipe_create_sampler_view(struct pipe_context *pipe,
struct pipe_resource *resource,
const struct pipe_sampler_view *templ);
struct sp_tgsi_sampler *
sp_create_tgsi_sampler(void);
#endif /* SP_TEX_SAMPLE_H */
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