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/**********************************************************
* Copyright 2008-2009 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, 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.
*
**********************************************************/
#ifndef SVGA_TGSI_H
#define SVGA_TGSI_H
#include "pipe/p_state.h"
#include "svga_hw_reg.h"
struct svga_fragment_shader;
struct svga_vertex_shader;
struct svga_shader;
struct tgsi_shader_info;
struct tgsi_token;
struct svga_vs_compile_key
{
unsigned zero_stride_vertex_elements;
unsigned need_prescale:1;
unsigned allow_psiz:1;
unsigned num_zero_stride_vertex_elements:6;
};
struct svga_fs_compile_key
{
unsigned light_twoside:1;
unsigned front_cw:1;
unsigned num_textures:8;
unsigned num_unnormalized_coords:8;
struct {
unsigned compare_mode:1;
unsigned compare_func:3;
unsigned unnormalized:1;
unsigned width_height_idx:7;
ubyte texture_target;
} tex[PIPE_MAX_SAMPLERS];
};
union svga_compile_key {
struct svga_vs_compile_key vkey;
struct svga_fs_compile_key fkey;
};
struct svga_shader_result
{
const struct svga_shader *shader;
/* Parameters used to generate this compilation result:
*/
union svga_compile_key key;
/* Compiled shader tokens:
*/
const unsigned *tokens;
unsigned nr_tokens;
/* SVGA Shader ID:
*/
unsigned id;
/* Next compilation result:
*/
struct svga_shader_result *next;
};
/* TGSI doesn't provide use with VS input semantics (they're actually
* pretty meaningless), so we just generate some plausible ones here.
* This is called both from within the TGSI translator and when
* building vdecls to ensure they match up.
*
* The real use of this information is matching vertex elements to
* fragment shader inputs in the case where vertex shader is disabled.
*/
static INLINE void svga_generate_vdecl_semantics( unsigned idx,
unsigned *usage,
unsigned *usage_index )
{
if (idx == 0) {
*usage = SVGA3D_DECLUSAGE_POSITION;
*usage_index = 0;
}
else {
*usage = SVGA3D_DECLUSAGE_TEXCOORD;
*usage_index = idx - 1;
}
}
static INLINE unsigned svga_vs_key_size( const struct svga_vs_compile_key *key )
{
return sizeof *key;
}
static INLINE unsigned svga_fs_key_size( const struct svga_fs_compile_key *key )
{
return (const char *)&key->tex[key->num_textures].texture_target -
(const char *)key;
}
struct svga_shader_result *
svga_translate_fragment_program( const struct svga_fragment_shader *fs,
const struct svga_fs_compile_key *fkey );
struct svga_shader_result *
svga_translate_vertex_program( const struct svga_vertex_shader *fs,
const struct svga_vs_compile_key *vkey );
void svga_destroy_shader_result( struct svga_shader_result *result );
#endif
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