RetroArch/gfx/drivers_renderchain/d3d9_renderchain.h

/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2011-2018 - Daniel De Matteis
 *
 *  RetroArch is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 *  PURPOSE.  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __D3D9_RENDERCHAIN_H__
#define __D3D9_RENDERCHAIN_H__

#include <stdint.h>

#include <retro_common_api.h>
#include <retro_inline.h>
#include <boolean.h>

#include <d3d9.h>
#include "../common/d3d9_common.h"
#include "../../verbosity.h"

RETRO_BEGIN_DECLS

#define D3D_DEFAULT_NONPOW2         ((UINT)-2)
#define D3D_FILTER_LINEAR           (3 << 0)
#define D3D_FILTER_POINT            (2 << 0)

struct lut_info
{
   LPDIRECT3DTEXTURE9 tex;
   char id[64];
   bool smooth;
};

struct shader_pass
{
   unsigned last_width, last_height;
   struct LinkInfo info;
   D3DPOOL pool;
   LPDIRECT3DTEXTURE9 tex;
   LPDIRECT3DVERTEXBUFFER9 vertex_buf;
   LPDIRECT3DVERTEXDECLARATION9 vertex_decl;
   void *attrib_map;
   void *vprg;
   void *fprg;
};

#define D3D_PI 3.14159265358979323846264338327

#define VECTOR_LIST_TYPE unsigned
#define VECTOR_LIST_NAME unsigned
#include "../../libretro-common/lists/vector_list.c"
#undef VECTOR_LIST_TYPE
#undef VECTOR_LIST_NAME

#define VECTOR_LIST_TYPE struct lut_info
#define VECTOR_LIST_NAME lut_info
#include "../../libretro-common/lists/vector_list.c"
#undef VECTOR_LIST_TYPE
#undef VECTOR_LIST_NAME

#define VECTOR_LIST_TYPE struct shader_pass
#define VECTOR_LIST_NAME shader_pass
#include "../../libretro-common/lists/vector_list.c"
#undef VECTOR_LIST_TYPE
#undef VECTOR_LIST_NAME

struct D3D9Vertex
{
   float x, y, z;
   float u, v;
   float lut_u, lut_v;
   float r, g, b, a;
};

typedef struct d3d9_renderchain
{
   unsigned pixel_size;
   uint64_t frame_count;
   struct
   {
      LPDIRECT3DTEXTURE9 tex[TEXTURES];
      LPDIRECT3DVERTEXBUFFER9 vertex_buf[TEXTURES];
      unsigned ptr;
      unsigned last_width[TEXTURES];
      unsigned last_height[TEXTURES];
   } prev;
   LPDIRECT3DDEVICE9 dev;
   D3DVIEWPORT9 *final_viewport;
   struct shader_pass_vector_list  *passes;
   struct unsigned_vector_list *bound_tex;
   struct unsigned_vector_list *bound_vert;
   struct lut_info_vector_list *luts;
} d3d9_renderchain_t;

static INLINE bool d3d9_renderchain_add_lut(d3d9_renderchain_t *chain,
      const char *id, const char *path, bool smooth)
{
   struct lut_info info;
   LPDIRECT3DTEXTURE9 lut    = (LPDIRECT3DTEXTURE9)
      d3d9_texture_new(
            chain->dev,
            path,
            D3D_DEFAULT_NONPOW2,
            D3D_DEFAULT_NONPOW2,
            0,
            0,
            ((D3DFORMAT)-3), /* D3DFMT_FROM_FILE */
            D3DPOOL_MANAGED,
            smooth ? D3D_FILTER_LINEAR : D3D_FILTER_POINT,
            0,
            0,
            NULL,
            NULL,
            false
            );

   RARCH_LOG("[D3D9 Cg]: LUT texture loaded: %s.\n", path);

   info.tex    = lut;
   info.smooth = smooth;
   strlcpy(info.id, id, sizeof(info.id));
   if (!lut)
      return false;

   d3d9_set_texture(chain->dev, 0, lut);
   d3d9_set_sampler_address_u(chain->dev, 0, D3DTADDRESS_BORDER);
   d3d9_set_sampler_address_v(chain->dev, 0, D3DTADDRESS_BORDER);
   d3d9_set_texture(chain->dev, 0, NULL);

   lut_info_vector_list_append(chain->luts, info);

   return true;
}

static INLINE void d3d9_cg_renderchain_add_lut_internal(
      d3d9_renderchain_t *chain,
      unsigned index, unsigned i)
{
   d3d9_set_texture(chain->dev, index, chain->luts->data[i].tex);
   d3d9_set_sampler_magfilter(chain->dev, index,
         d3d_translate_filter(chain->luts->data[i].smooth ? RARCH_FILTER_LINEAR : RARCH_FILTER_NEAREST));
   d3d9_set_sampler_minfilter(chain->dev, index,
         d3d_translate_filter(chain->luts->data[i].smooth ? RARCH_FILTER_LINEAR : RARCH_FILTER_NEAREST));
   d3d9_set_sampler_address_u(chain->dev, index, D3DTADDRESS_BORDER);
   d3d9_set_sampler_address_v(chain->dev, index, D3DTADDRESS_BORDER);
   unsigned_vector_list_append(chain->bound_tex, index);
}

static INLINE void d3d9_init_renderchain(d3d9_renderchain_t *chain)
{
   chain->passes     = shader_pass_vector_list_new();
   chain->luts       = lut_info_vector_list_new();
   chain->bound_tex  = unsigned_vector_list_new();
   chain->bound_vert = unsigned_vector_list_new();
}

static INLINE void d3d9_renderchain_blit_to_texture(
      LPDIRECT3DTEXTURE9 tex,
      const void *frame,
      unsigned tex_width,  unsigned tex_height,
      unsigned width,      unsigned height,
      unsigned last_width, unsigned last_height,
      unsigned pitch, unsigned pixel_size)
{
   D3DLOCKED_RECT d3dlr    = {0, NULL};

   if (
         (last_width != width || last_height != height)
      )
   {
      d3d9_lock_rectangle(tex, 0, &d3dlr,
            NULL, tex_height, D3DLOCK_NOSYSLOCK);
      d3d9_lock_rectangle_clear(tex, 0, &d3dlr,
            NULL, tex_height, D3DLOCK_NOSYSLOCK);
   }

   if (d3d9_lock_rectangle(tex, 0, &d3dlr, NULL, 0, 0))
   {
      d3d9_texture_blit(pixel_size, tex,
            &d3dlr, frame, width, height, pitch);
      d3d9_unlock_rectangle(tex);
   }
}

RETRO_END_DECLS

#endif