/*
 * Copyright 2011 Joakim Sindholt <opensource@zhasha.com>
 *
 * 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
 * on 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
 * THE AUTHOR(S) AND/OR THEIR 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 _NINE_VERTEXSHADER9_H_
#define _NINE_VERTEXSHADER9_H_

#include "util/u_half.h"

#include "iunknown.h"
#include "nine_helpers.h"
#include "nine_shader.h"
#include "nine_state.h"

struct NineVertexShader9
{
    struct NineUnknown base;
    struct nine_shader_variant variant;

    struct {
        uint16_t ndecl; /* NINE_DECLUSAGE_x */
    } input_map[PIPE_MAX_ATTRIBS];
    unsigned num_inputs;

    struct {
        const DWORD *tokens;
        DWORD size;
        uint8_t version; /* (major << 4) | minor */
    } byte_code;

    uint8_t sampler_mask;

    boolean position_t; /* if true, disable vport transform */
    boolean point_size; /* if true, set rasterizer.point_size_per_vertex to 1 */

    unsigned const_used_size; /* in bytes */

    struct nine_lconstf lconstf;

    const struct pipe_stream_output_info *so;

    uint64_t ff_key[3];
    void *ff_cso;

    uint64_t last_key;
    void *last_cso;

    uint64_t next_key;
};
static inline struct NineVertexShader9 *
NineVertexShader9( void *data )
{
    return (struct NineVertexShader9 *)data;
}

static inline BOOL
NineVertexShader9_UpdateKey( struct NineVertexShader9 *vs,
                             struct nine_state *state )
{
    uint8_t samplers_shadow;
    uint64_t key;
    BOOL res;

    samplers_shadow = (uint8_t)((state->samplers_shadow & NINE_VS_SAMPLERS_MASK) >> NINE_SAMPLER_VS(0));
    samplers_shadow &= vs->sampler_mask;
    key = samplers_shadow;

    if (vs->byte_code.version < 0x30)
        key |= (uint32_t) (state->rs[D3DRS_FOGENABLE] << 8);

    /* We want to use a 64 bits key for performance.
     * Use compressed float16 values for the pointsize min/max in the key.
     * Shaders do not usually output psize.*/
    if (vs->point_size) {
        key |= ((uint64_t)util_float_to_half(asfloat(state->rs[D3DRS_POINTSIZE_MIN]))) << 32;
        key |= ((uint64_t)util_float_to_half(asfloat(state->rs[D3DRS_POINTSIZE_MAX]))) << 48;
    }

    res = vs->last_key != key;
    if (res)
        vs->next_key = key;
    return res;
}

void *
NineVertexShader9_GetVariant( struct NineVertexShader9 *vs );

/*** public ***/

HRESULT
NineVertexShader9_new( struct NineDevice9 *pDevice,
                       struct NineVertexShader9 **ppOut,
                       const DWORD *pFunction, void *cso );

HRESULT
NineVertexShader9_ctor( struct NineVertexShader9 *,
                        struct NineUnknownParams *pParams,
                        const DWORD *pFunction, void *cso );

void
NineVertexShader9_dtor( struct NineVertexShader9 * );

HRESULT NINE_WINAPI
NineVertexShader9_GetFunction( struct NineVertexShader9 *This,
                               void *pData,
                               UINT *pSizeOfData );

#endif /* _NINE_VERTEXSHADER9_H_ */