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RetroArch/gfx/drivers_shader/shader_gl_cg.c
twinaphex 7fbbac544e Some C89 build fixes
2015-04-12 19:29:38 +02:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - 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/>.
*/
#ifdef _MSC_VER
#pragma comment(lib, "cg")
#pragma comment(lib, "cggl")
#endif
#include <stdint.h>
#include "../video_shader_driver.h"
#include <Cg/cg.h>
#ifdef HAVE_OPENGL
#include "../drivers/gl_common.h"
#include <Cg/cgGL.h>
#endif
#include <string.h>
#include <compat/strl.h>
#include <compat/posix_string.h>
#include <file/config_file.h>
#include "../../dynamic.h"
#include <file/file_path.h>
#include "../video_state_tracker.h"
#if 0
#define RARCH_CG_DEBUG
#endif
/* Used when we call deactivate() since just unbinding
* the program didn't seem to work... */
static const char *stock_cg_program =
"struct input"
"{"
" float2 tex_coord;"
" float4 color;"
" float4 vertex_coord;"
" uniform float4x4 mvp_matrix;"
" uniform sampler2D texture;"
"};"
"struct vertex_data"
"{"
" float2 tex;"
" float4 color;"
"};"
"void main_vertex"
"("
" out float4 oPosition : POSITION,"
" input IN,"
" out vertex_data vert"
")"
"{"
" oPosition = mul(IN.mvp_matrix, IN.vertex_coord);"
" vert = vertex_data(IN.tex_coord, IN.color);"
"}"
""
"float4 main_fragment(input IN, vertex_data vert, uniform sampler2D s0 : TEXUNIT0) : COLOR"
"{"
" return vert.color * tex2D(s0, vert.tex);"
"}";
#ifdef RARCH_CG_DEBUG
static void cg_error_handler(CGcontext ctx, CGerror error, void *data)
{
(void)ctx;
(void)data;
switch (error)
{
case CG_INVALID_PARAM_HANDLE_ERROR:
RARCH_ERR("CG: Invalid param handle.\n");
break;
case CG_INVALID_PARAMETER_ERROR:
RARCH_ERR("CG: Invalid parameter.\n");
break;
default:
break;
}
RARCH_ERR("CG error: \"%s\"\n", cgGetErrorString(error));
}
#endif
struct cg_fbo_params
{
CGparameter vid_size_f;
CGparameter tex_size_f;
CGparameter vid_size_v;
CGparameter tex_size_v;
CGparameter tex;
CGparameter coord;
};
#define MAX_VARIABLES 64
#define PREV_TEXTURES (MAX_TEXTURES - 1)
struct cg_program
{
CGprogram vprg;
CGprogram fprg;
CGparameter tex;
CGparameter lut_tex;
CGparameter color;
CGparameter vertex;
CGparameter vid_size_f;
CGparameter tex_size_f;
CGparameter out_size_f;
CGparameter frame_cnt_f;
CGparameter frame_dir_f;
CGparameter vid_size_v;
CGparameter tex_size_v;
CGparameter out_size_v;
CGparameter frame_cnt_v;
CGparameter frame_dir_v;
CGparameter mvp;
struct cg_fbo_params fbo[GFX_MAX_SHADERS];
struct cg_fbo_params orig;
struct cg_fbo_params prev[PREV_TEXTURES];
};
typedef struct cg_shader_data
{
struct cg_program prg[GFX_MAX_SHADERS];
unsigned active_idx;
unsigned cg_attrib_idx;
CGprofile cgVProf;
CGprofile cgFProf;
struct video_shader *cg_shader;
state_tracker_t *state_tracker;
GLuint lut_textures[GFX_MAX_TEXTURES];
CGparameter cg_attribs[PREV_TEXTURES + 1 + 4 + GFX_MAX_SHADERS];
char cg_alias_define[GFX_MAX_SHADERS][128];
CGcontext cgCtx;
} cg_shader_data_t;
static void gl_cg_reset_attrib(cg_shader_data_t *cg)
{
unsigned i;
if (!cg)
return;
/* Add sanity check that we did not overflow. */
rarch_assert(cg->cg_attrib_idx <= ARRAY_SIZE(cg->cg_attribs));
for (i = 0; i < cg->cg_attrib_idx; i++)
cgGLDisableClientState(cg->cg_attribs[i]);
cg->cg_attrib_idx = 0;
}
static bool gl_cg_set_mvp(void *data, const math_matrix_4x4 *mat)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
(void)data;
if (cg && cg->prg[cg->active_idx].mvp)
{
cgGLSetMatrixParameterfc(cg->prg[cg->active_idx].mvp, mat->data);
return true;
}
gl_ff_matrix(mat);
return false;
}
#define SET_COORD(cg, name, coords_name, len) do { \
if (cg->prg[cg->active_idx].name) \
{ \
cgGLSetParameterPointer(cg->prg[cg->active_idx].name, len, GL_FLOAT, 0, coords->coords_name); \
cgGLEnableClientState(cg->prg[cg->active_idx].name); \
cg->cg_attribs[cg->cg_attrib_idx++] = cg->prg[cg->active_idx].name; \
} \
} while(0)
static bool gl_cg_set_coords(const void *data)
{
const struct gl_coords *coords = (const struct gl_coords*)data;
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (!cg || !coords)
goto fallback;
SET_COORD(cg, vertex, vertex, 2);
SET_COORD(cg, tex, tex_coord, 2);
SET_COORD(cg, lut_tex, lut_tex_coord, 2);
SET_COORD(cg, color, color, 4);
return true;
fallback:
gl_ff_vertex(coords);
return false;
}
#define set_param_2f(param, x, y) \
if (param) cgGLSetParameter2f(param, x, y)
#define set_param_1f(param, x) \
if (param) cgGLSetParameter1f(param, x)
static void gl_cg_set_params(void *data, unsigned width, unsigned height,
unsigned tex_width, unsigned tex_height,
unsigned out_width, unsigned out_height,
unsigned frame_count,
const void *_info,
const void *_prev_info,
const void *_fbo_info,
unsigned fbo_info_cnt)
{
unsigned i;
CGparameter param;
const struct gl_tex_info *info = (const struct gl_tex_info*)_info;
const struct gl_tex_info *prev_info = (const struct gl_tex_info*)_prev_info;
const struct gl_tex_info *fbo_info = (const struct gl_tex_info*)_fbo_info;
driver_t *driver = driver_get_ptr();
global_t *global = global_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
(void)data;
if (!cg || (cg->active_idx == 0) ||
(cg->active_idx == GL_SHADER_STOCK_BLEND))
return;
/* Set frame. */
set_param_2f(cg->prg[cg->active_idx].vid_size_f, width, height);
set_param_2f(cg->prg[cg->active_idx].tex_size_f, tex_width, tex_height);
set_param_2f(cg->prg[cg->active_idx].out_size_f, out_width, out_height);
set_param_1f(cg->prg[cg->active_idx].frame_dir_f,
global->rewind.frame_is_reverse ? -1.0 : 1.0);
set_param_2f(cg->prg[cg->active_idx].vid_size_v, width, height);
set_param_2f(cg->prg[cg->active_idx].tex_size_v, tex_width, tex_height);
set_param_2f(cg->prg[cg->active_idx].out_size_v, out_width, out_height);
set_param_1f(cg->prg[cg->active_idx].frame_dir_v,
global->rewind.frame_is_reverse ? -1.0 : 1.0);
if (cg->prg[cg->active_idx].frame_cnt_f || cg->prg[cg->active_idx].frame_cnt_v)
{
unsigned modulo = cg->cg_shader->pass[cg->active_idx - 1].frame_count_mod;
if (modulo)
frame_count %= modulo;
set_param_1f(cg->prg[cg->active_idx].frame_cnt_f, (float)frame_count);
set_param_1f(cg->prg[cg->active_idx].frame_cnt_v, (float)frame_count);
}
/* Set orig texture. */
param = cg->prg[cg->active_idx].orig.tex;
if (param)
{
cgGLSetTextureParameter(param, info->tex);
cgGLEnableTextureParameter(param);
}
set_param_2f(cg->prg[cg->active_idx].orig.vid_size_v,
info->input_size[0], info->input_size[1]);
set_param_2f(cg->prg[cg->active_idx].orig.vid_size_f,
info->input_size[0], info->input_size[1]);
set_param_2f(cg->prg[cg->active_idx].orig.tex_size_v,
info->tex_size[0], info->tex_size[1]);
set_param_2f(cg->prg[cg->active_idx].orig.tex_size_f,
info->tex_size[0], info->tex_size[1]);
if (cg->prg[cg->active_idx].orig.coord)
{
cgGLSetParameterPointer(cg->prg[cg->active_idx].orig.coord, 2,
GL_FLOAT, 0, info->coord);
cgGLEnableClientState(cg->prg[cg->active_idx].orig.coord);
cg->cg_attribs[cg->cg_attrib_idx++] = cg->prg[cg->active_idx].orig.coord;
}
/* Set prev textures. */
for (i = 0; i < PREV_TEXTURES; i++)
{
param = cg->prg[cg->active_idx].prev[i].tex;
if (param)
{
cgGLSetTextureParameter(param, prev_info[i].tex);
cgGLEnableTextureParameter(param);
}
set_param_2f(cg->prg[cg->active_idx].prev[i].vid_size_v,
prev_info[i].input_size[0], prev_info[i].input_size[1]);
set_param_2f(cg->prg[cg->active_idx].prev[i].vid_size_f,
prev_info[i].input_size[0], prev_info[i].input_size[1]);
set_param_2f(cg->prg[cg->active_idx].prev[i].tex_size_v,
prev_info[i].tex_size[0], prev_info[i].tex_size[1]);
set_param_2f(cg->prg[cg->active_idx].prev[i].tex_size_f,
prev_info[i].tex_size[0], prev_info[i].tex_size[1]);
if (cg->prg[cg->active_idx].prev[i].coord)
{
cgGLSetParameterPointer(cg->prg[cg->active_idx].prev[i].coord,
2, GL_FLOAT, 0, prev_info[i].coord);
cgGLEnableClientState(cg->prg[cg->active_idx].prev[i].coord);
cg->cg_attribs[cg->cg_attrib_idx++] = cg->prg[cg->active_idx].prev[i].coord;
}
}
/* Set lookup textures. */
for (i = 0; i < cg->cg_shader->luts; i++)
{
CGparameter vparam;
CGparameter fparam = cgGetNamedParameter(
cg->prg[cg->active_idx].fprg, cg->cg_shader->lut[i].id);
if (fparam)
{
cgGLSetTextureParameter(fparam, cg->lut_textures[i]);
cgGLEnableTextureParameter(fparam);
}
vparam = cgGetNamedParameter(cg->prg[cg->active_idx].vprg,
cg->cg_shader->lut[i].id);
if (vparam)
{
cgGLSetTextureParameter(vparam, cg->lut_textures[i]);
cgGLEnableTextureParameter(vparam);
}
}
/* Set FBO textures. */
if (cg->active_idx)
{
for (i = 0; i < fbo_info_cnt; i++)
{
if (cg->prg[cg->active_idx].fbo[i].tex)
{
cgGLSetTextureParameter(
cg->prg[cg->active_idx].fbo[i].tex, fbo_info[i].tex);
cgGLEnableTextureParameter(cg->prg[cg->active_idx].fbo[i].tex);
}
set_param_2f(cg->prg[cg->active_idx].fbo[i].vid_size_v,
fbo_info[i].input_size[0], fbo_info[i].input_size[1]);
set_param_2f(cg->prg[cg->active_idx].fbo[i].vid_size_f,
fbo_info[i].input_size[0], fbo_info[i].input_size[1]);
set_param_2f(cg->prg[cg->active_idx].fbo[i].tex_size_v,
fbo_info[i].tex_size[0], fbo_info[i].tex_size[1]);
set_param_2f(cg->prg[cg->active_idx].fbo[i].tex_size_f,
fbo_info[i].tex_size[0], fbo_info[i].tex_size[1]);
if (cg->prg[cg->active_idx].fbo[i].coord)
{
cgGLSetParameterPointer(cg->prg[cg->active_idx].fbo[i].coord,
2, GL_FLOAT, 0, fbo_info[i].coord);
cgGLEnableClientState(cg->prg[cg->active_idx].fbo[i].coord);
cg->cg_attribs[cg->cg_attrib_idx++] = cg->prg[cg->active_idx].fbo[i].coord;
}
}
}
/* #pragma parameters. */
for (i = 0; i < cg->cg_shader->num_parameters; i++)
{
CGparameter param_v = cgGetNamedParameter(
cg->prg[cg->active_idx].vprg, cg->cg_shader->parameters[i].id);
CGparameter param_f = cgGetNamedParameter(
cg->prg[cg->active_idx].fprg, cg->cg_shader->parameters[i].id);
set_param_1f(param_v, cg->cg_shader->parameters[i].current);
set_param_1f(param_f, cg->cg_shader->parameters[i].current);
}
/* Set state parameters. */
if (cg->state_tracker)
{
/* Only query uniforms in first pass. */
static struct state_tracker_uniform tracker_info[MAX_VARIABLES];
static unsigned cnt = 0;
if (cg->active_idx == 1)
cnt = state_tracker_get_uniform(cg->state_tracker, tracker_info,
MAX_VARIABLES, frame_count);
for (i = 0; i < cnt; i++)
{
CGparameter param_v = cgGetNamedParameter(
cg->prg[cg->active_idx].vprg, tracker_info[i].id);
CGparameter param_f = cgGetNamedParameter(
cg->prg[cg->active_idx].fprg, tracker_info[i].id);
set_param_1f(param_v, tracker_info[i].value);
set_param_1f(param_f, tracker_info[i].value);
}
}
}
static void gl_cg_deinit_progs(cg_shader_data_t *cg)
{
unsigned i;
if (!cg)
return;
RARCH_LOG("CG: Destroying programs.\n");
cgGLUnbindProgram(cg->cgFProf);
cgGLUnbindProgram(cg->cgVProf);
/* Programs may alias [0]. */
for (i = 1; i < GFX_MAX_SHADERS; i++)
{
if (cg->prg[i].fprg && cg->prg[i].fprg != cg->prg[0].fprg)
cgDestroyProgram(cg->prg[i].fprg);
if (cg->prg[i].vprg && cg->prg[i].vprg != cg->prg[0].vprg)
cgDestroyProgram(cg->prg[i].vprg);
}
if (cg->prg[0].fprg)
cgDestroyProgram(cg->prg[0].fprg);
if (cg->prg[0].vprg)
cgDestroyProgram(cg->prg[0].vprg);
memset(cg->prg, 0, sizeof(cg->prg));
}
static void gl_cg_destroy_resources(cg_shader_data_t *cg)
{
if (!cg)
return;
gl_cg_reset_attrib(cg);
gl_cg_deinit_progs(cg);
if (cg->cg_shader && cg->cg_shader->luts)
{
glDeleteTextures(cg->cg_shader->luts, cg->lut_textures);
memset(cg->lut_textures, 0, sizeof(cg->lut_textures));
}
if (cg->state_tracker)
{
state_tracker_free(cg->state_tracker);
cg->state_tracker = NULL;
}
free(cg->cg_shader);
cg->cg_shader = NULL;
}
/* Final deinit. */
static void gl_cg_deinit_context_state(cg_shader_data_t *cg)
{
if (cg->cgCtx)
{
RARCH_LOG("CG: Destroying context.\n");
cgDestroyContext(cg->cgCtx);
}
cg->cgCtx = NULL;
}
/* Full deinit. */
static void gl_cg_deinit(void)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (!cg)
return;
gl_cg_destroy_resources(cg);
gl_cg_deinit_context_state(cg);
}
#define SET_LISTING(cg, type) \
{ \
const char *list = cgGetLastListing(cg->cgCtx); \
if (list) \
listing_##type = strdup(list); \
}
static bool load_program(
cg_shader_data_t *cg,
unsigned idx,
const char *prog,
bool path_is_file)
{
bool ret = true;
char *listing_f = NULL;
char *listing_v = NULL;
unsigned i, argc = 0;
const char *argv[2 + GFX_MAX_SHADERS];
argv[argc++] = "-DPARAMETER_UNIFORM";
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
if (*(cg->cg_alias_define[i]))
argv[argc++] = cg->cg_alias_define[i];
}
argv[argc] = NULL;
if (path_is_file)
{
cg->prg[idx].fprg = cgCreateProgramFromFile(cg->cgCtx, CG_SOURCE,
prog, cg->cgFProf, "main_fragment", argv);
SET_LISTING(cg, f);
cg->prg[idx].vprg = cgCreateProgramFromFile(cg->cgCtx, CG_SOURCE,
prog, cg->cgVProf, "main_vertex", argv);
SET_LISTING(cg, v);
}
else
{
cg->prg[idx].fprg = cgCreateProgram(cg->cgCtx, CG_SOURCE,
prog, cg->cgFProf, "main_fragment", argv);
SET_LISTING(cg, f);
cg->prg[idx].vprg = cgCreateProgram(cg->cgCtx, CG_SOURCE,
prog, cg->cgVProf, "main_vertex", argv);
SET_LISTING(cg, v);
}
if (!cg->prg[idx].fprg || !cg->prg[idx].vprg)
{
RARCH_ERR("CG error: %s\n", cgGetErrorString(cgGetError()));
if (listing_f)
RARCH_ERR("Fragment:\n%s\n", listing_f);
else if (listing_v)
RARCH_ERR("Vertex:\n%s\n", listing_v);
ret = false;
goto end;
}
cgGLLoadProgram(cg->prg[idx].fprg);
cgGLLoadProgram(cg->prg[idx].vprg);
end:
free(listing_f);
free(listing_v);
return ret;
}
static void set_program_base_attrib(cg_shader_data_t *cg, unsigned i);
static bool load_stock(cg_shader_data_t *cg)
{
if (!load_program(cg, 0, stock_cg_program, false))
{
RARCH_ERR("Failed to compile passthrough shader, is something wrong with your environment?\n");
return false;
}
set_program_base_attrib(cg, 0);
return true;
}
static bool load_plain(cg_shader_data_t *cg, const char *path)
{
if (!load_stock(cg))
return false;
cg->cg_shader = (struct video_shader*)calloc(1, sizeof(*cg->cg_shader));
if (!cg->cg_shader)
return false;
cg->cg_shader->passes = 1;
if (path)
{
RARCH_LOG("Loading Cg file: %s\n", path);
strlcpy(cg->cg_shader->pass[0].source.path, path,
sizeof(cg->cg_shader->pass[0].source.path));
if (!load_program(cg, 1, path, true))
return false;
}
else
{
RARCH_LOG("Loading stock Cg file.\n");
cg->prg[1] = cg->prg[0];
}
video_shader_resolve_parameters(NULL, cg->cg_shader);
return true;
}
static bool gl_cg_load_imports(cg_shader_data_t *cg)
{
unsigned i;
struct state_tracker_info tracker_info = {0};
if (!cg->cg_shader->variables)
return true;
for (i = 0; i < cg->cg_shader->variables; i++)
{
unsigned memtype;
switch (cg->cg_shader->variable[i].ram_type)
{
case RARCH_STATE_WRAM:
memtype = RETRO_MEMORY_SYSTEM_RAM;
break;
default:
memtype = -1u;
}
if ((memtype != -1u) &&
(cg->cg_shader->variable[i].addr >= pretro_get_memory_size(memtype)))
{
RARCH_ERR("Address out of bounds.\n");
return false;
}
}
tracker_info.wram = (uint8_t*)
pretro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
tracker_info.info = cg->cg_shader->variable;
tracker_info.info_elem = cg->cg_shader->variables;
#ifdef HAVE_PYTHON
if (*cg->cg_shader->script_path)
{
tracker_info.script = cg->cg_shader->script_path;
tracker_info.script_is_file = true;
}
tracker_info.script_class =
*cg->cg_shader->script_class ? cg->cg_shader->script_class : NULL;
#endif
cg->state_tracker = state_tracker_init(&tracker_info);
if (!cg->state_tracker)
RARCH_WARN("Failed to initialize state tracker.\n");
return true;
}
static bool load_shader(cg_shader_data_t *cg, unsigned i)
{
RARCH_LOG("Loading Cg shader: \"%s\".\n",
cg->cg_shader->pass[i].source.path);
if (!load_program(cg, i + 1,
cg->cg_shader->pass[i].source.path, true))
return false;
return true;
}
static bool load_preset(cg_shader_data_t *cg, const char *path)
{
unsigned i;
config_file_t *conf = NULL;
if (!load_stock(cg))
return false;
RARCH_LOG("Loading Cg meta-shader: %s\n", path);
conf = config_file_new(path);
if (!conf)
{
RARCH_ERR("Failed to load preset.\n");
return false;
}
cg->cg_shader = (struct video_shader*)calloc(1, sizeof(*cg->cg_shader));
if (!cg->cg_shader)
{
config_file_free(conf);
return false;
}
if (!video_shader_read_conf_cgp(conf, cg->cg_shader))
{
RARCH_ERR("Failed to parse CGP file.\n");
config_file_free(conf);
return false;
}
video_shader_resolve_relative(cg->cg_shader, path);
video_shader_resolve_parameters(conf, cg->cg_shader);
config_file_free(conf);
if (cg->cg_shader->passes > GFX_MAX_SHADERS - 3)
{
RARCH_WARN("Too many shaders ... Capping shader amount to %d.\n",
GFX_MAX_SHADERS - 3);
cg->cg_shader->passes = GFX_MAX_SHADERS - 3;
}
for (i = 0; i < cg->cg_shader->passes; i++)
if (*cg->cg_shader->pass[i].alias)
snprintf(cg->cg_alias_define[i],
sizeof(cg->cg_alias_define[i]),
"-D%s_ALIAS",
cg->cg_shader->pass[i].alias);
for (i = 0; i < cg->cg_shader->passes; i++)
{
if (!load_shader(cg, i))
{
RARCH_ERR("Failed to load shaders ...\n");
return false;
}
}
if (!gl_load_luts(cg->cg_shader, cg->lut_textures))
{
RARCH_ERR("Failed to load lookup textures ...\n");
return false;
}
if (!gl_cg_load_imports(cg))
{
RARCH_ERR("Failed to load imports ...\n");
return false;
}
return true;
}
static void set_program_base_attrib(cg_shader_data_t *cg, unsigned i)
{
CGparameter param = cgGetFirstParameter(cg->prg[i].vprg, CG_PROGRAM);
for (; param; param = cgGetNextParameter(param))
{
const char *semantic = NULL;
if (cgGetParameterDirection(param) != CG_IN
|| cgGetParameterVariability(param) != CG_VARYING)
continue;
semantic = cgGetParameterSemantic(param);
if (!semantic)
continue;
RARCH_LOG("CG: Found semantic \"%s\" in prog #%u.\n", semantic, i);
if (strcmp(semantic, "TEXCOORD") == 0 || strcmp(semantic, "TEXCOORD0") == 0)
cg->prg[i].tex = param;
else if (strcmp(semantic, "COLOR") == 0 || strcmp(semantic, "COLOR0") == 0)
cg->prg[i].color = param;
else if (strcmp(semantic, "POSITION") == 0)
cg->prg[i].vertex = param;
else if (strcmp(semantic, "TEXCOORD1") == 0)
cg->prg[i].lut_tex = param;
}
if (!cg->prg[i].tex)
cg->prg[i].tex = cgGetNamedParameter (cg->prg[i].vprg, "IN.tex_coord");
if (!cg->prg[i].color)
cg->prg[i].color = cgGetNamedParameter(cg->prg[i].vprg, "IN.color");
if (!cg->prg[i].vertex)
cg->prg[i].vertex = cgGetNamedParameter (cg->prg[i].vprg, "IN.vertex_coord");
if (!cg->prg[i].lut_tex)
cg->prg[i].lut_tex = cgGetNamedParameter (cg->prg[i].vprg, "IN.lut_tex_coord");
}
static void set_pass_attrib(struct cg_program *program, struct cg_fbo_params *fbo,
const char *attr)
{
char attr_buf[64];
snprintf(attr_buf, sizeof(attr_buf), "%s.texture", attr);
if (!fbo->tex)
fbo->tex = cgGetNamedParameter(program->fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "%s.video_size", attr);
if (!fbo->vid_size_v)
fbo->vid_size_v = cgGetNamedParameter(program->vprg, attr_buf);
if (!fbo->vid_size_f)
fbo->vid_size_f = cgGetNamedParameter(program->fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "%s.texture_size", attr);
if (!fbo->tex_size_v)
fbo->tex_size_v = cgGetNamedParameter(program->vprg, attr_buf);
if (!fbo->tex_size_f)
fbo->tex_size_f = cgGetNamedParameter(program->fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "%s.tex_coord", attr);
if (!fbo->coord)
fbo->coord = cgGetNamedParameter(program->vprg, attr_buf);
}
static void set_program_attributes(cg_shader_data_t *cg, unsigned i)
{
unsigned j;
if (!cg)
return;
cgGLBindProgram(cg->prg[i].fprg);
cgGLBindProgram(cg->prg[i].vprg);
set_program_base_attrib(cg, i);
cg->prg[i].vid_size_f = cgGetNamedParameter (cg->prg[i].fprg, "IN.video_size");
cg->prg[i].tex_size_f = cgGetNamedParameter (cg->prg[i].fprg, "IN.texture_size");
cg->prg[i].out_size_f = cgGetNamedParameter (cg->prg[i].fprg, "IN.output_size");
cg->prg[i].frame_cnt_f = cgGetNamedParameter(cg->prg[i].fprg, "IN.frame_count");
cg->prg[i].frame_dir_f = cgGetNamedParameter(cg->prg[i].fprg, "IN.frame_direction");
cg->prg[i].vid_size_v = cgGetNamedParameter (cg->prg[i].vprg, "IN.video_size");
cg->prg[i].tex_size_v = cgGetNamedParameter (cg->prg[i].vprg, "IN.texture_size");
cg->prg[i].out_size_v = cgGetNamedParameter (cg->prg[i].vprg, "IN.output_size");
cg->prg[i].frame_cnt_v = cgGetNamedParameter(cg->prg[i].vprg, "IN.frame_count");
cg->prg[i].frame_dir_v = cgGetNamedParameter(cg->prg[i].vprg, "IN.frame_direction");
cg->prg[i].mvp = cgGetNamedParameter(cg->prg[i].vprg, "modelViewProj");
if (!cg->prg[i].mvp)
cg->prg[i].mvp = cgGetNamedParameter(cg->prg[i].vprg, "IN.mvp_matrix");
cg->prg[i].orig.tex = cgGetNamedParameter(cg->prg[i].fprg, "ORIG.texture");
cg->prg[i].orig.vid_size_v = cgGetNamedParameter(cg->prg[i].vprg, "ORIG.video_size");
cg->prg[i].orig.vid_size_f = cgGetNamedParameter(cg->prg[i].fprg, "ORIG.video_size");
cg->prg[i].orig.tex_size_v = cgGetNamedParameter(cg->prg[i].vprg, "ORIG.texture_size");
cg->prg[i].orig.tex_size_f = cgGetNamedParameter(cg->prg[i].fprg, "ORIG.texture_size");
cg->prg[i].orig.coord = cgGetNamedParameter(cg->prg[i].vprg, "ORIG.tex_coord");
if (i > 1)
{
char pass_str[64];
snprintf(pass_str, sizeof(pass_str), "PASSPREV%u", i);
set_pass_attrib(&cg->prg[i], &cg->prg[i].orig, pass_str);
}
for (j = 0; j < PREV_TEXTURES; j++)
{
char attr_buf_tex[64], attr_buf_vid_size[64];
char attr_buf_tex_size[64], attr_buf_coord[64];
static const char *prev_names[PREV_TEXTURES] = {
"PREV",
"PREV1",
"PREV2",
"PREV3",
"PREV4",
"PREV5",
"PREV6",
};
snprintf(attr_buf_tex, sizeof(attr_buf_tex),
"%s.texture", prev_names[j]);
snprintf(attr_buf_vid_size, sizeof(attr_buf_vid_size),
"%s.video_size", prev_names[j]);
snprintf(attr_buf_tex_size, sizeof(attr_buf_tex_size),
"%s.texture_size", prev_names[j]);
snprintf(attr_buf_coord, sizeof(attr_buf_coord),
"%s.tex_coord", prev_names[j]);
cg->prg[i].prev[j].tex = cgGetNamedParameter(cg->prg[i].fprg, attr_buf_tex);
cg->prg[i].prev[j].vid_size_v =
cgGetNamedParameter(cg->prg[i].vprg, attr_buf_vid_size);
cg->prg[i].prev[j].vid_size_f =
cgGetNamedParameter(cg->prg[i].fprg, attr_buf_vid_size);
cg->prg[i].prev[j].tex_size_v =
cgGetNamedParameter(cg->prg[i].vprg, attr_buf_tex_size);
cg->prg[i].prev[j].tex_size_f =
cgGetNamedParameter(cg->prg[i].fprg, attr_buf_tex_size);
cg->prg[i].prev[j].coord = cgGetNamedParameter(cg->prg[i].vprg, attr_buf_coord);
}
for (j = 0; j + 1 < i; j++)
{
char pass_str[64];
snprintf(pass_str, sizeof(pass_str), "PASS%u", j + 1);
set_pass_attrib(&cg->prg[i], &cg->prg[i].fbo[j], pass_str);
snprintf(pass_str, sizeof(pass_str), "PASSPREV%u", i - (j + 1));
set_pass_attrib(&cg->prg[i], &cg->prg[i].fbo[j], pass_str);
if (*cg->cg_shader->pass[j].alias)
set_pass_attrib(&cg->prg[i], &cg->prg[i].fbo[j], cg->cg_shader->pass[j].alias);
}
}
static bool gl_cg_init(void *data, const char *path)
{
cg_shader_data_t *cg = NULL;
driver_t *driver = NULL;
unsigned i;
(void)data;
cg = (cg_shader_data_t*)calloc(1, sizeof(cg_shader_data_t));
driver = driver_get_ptr();
if (!cg)
return false;
#ifdef HAVE_CG_RUNTIME_COMPILER
cgRTCgcInit();
#endif
cg->cgCtx = cgCreateContext();
if (!cg->cgCtx)
{
RARCH_ERR("Failed to create Cg context\n");
free(cg);
return false;
}
#ifdef RARCH_CG_DEBUG
cgGLSetDebugMode(CG_TRUE);
cgSetErrorHandler(cg_error_handler, NULL);
#endif
cg->cgFProf = cgGLGetLatestProfile(CG_GL_FRAGMENT);
cg->cgVProf = cgGLGetLatestProfile(CG_GL_VERTEX);
if (
cg->cgFProf == CG_PROFILE_UNKNOWN ||
cg->cgVProf == CG_PROFILE_UNKNOWN)
{
RARCH_ERR("Invalid profile type\n");
free(cg);
goto error;
}
RARCH_LOG("[Cg]: Vertex profile: %s\n", cgGetProfileString(cg->cgVProf));
RARCH_LOG("[Cg]: Fragment profile: %s\n", cgGetProfileString(cg->cgFProf));
cgGLSetOptimalOptions(cg->cgFProf);
cgGLSetOptimalOptions(cg->cgVProf);
cgGLEnableProfile(cg->cgFProf);
cgGLEnableProfile(cg->cgVProf);
memset(cg->cg_alias_define, 0, sizeof(cg->cg_alias_define));
if (path && strcmp(path_get_extension(path), "cgp") == 0)
{
if (!load_preset(cg, path))
goto error;
}
else
{
if (!load_plain(cg, path))
goto error;
}
cg->prg[0].mvp = cgGetNamedParameter(cg->prg[0].vprg, "IN.mvp_matrix");
for (i = 1; i <= cg->cg_shader->passes; i++)
set_program_attributes(cg, i);
/* If we aren't using last pass non-FBO shader,
* this shader will be assumed to be "fixed-function".
*
* Just use prg[0] for that pass, which will be
* pass-through. */
cg->prg[cg->cg_shader->passes + 1] = cg->prg[0];
/* No need to apply Android hack in Cg. */
cg->prg[GL_SHADER_STOCK_BLEND] = cg->prg[0];
cgGLBindProgram(cg->prg[1].fprg);
cgGLBindProgram(cg->prg[1].vprg);
driver->video_shader_data = cg;
return true;
error:
gl_cg_destroy_resources(cg);
if (!cg)
free(cg);
return false;
}
static void gl_cg_use(void *data, unsigned idx)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
(void)data;
if (cg && cg->prg[idx].vprg && cg->prg[idx].fprg)
{
gl_cg_reset_attrib(cg);
cg->active_idx = idx;
cgGLBindProgram(cg->prg[idx].vprg);
cgGLBindProgram(cg->prg[idx].fprg);
}
}
static unsigned gl_cg_num(void)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (!cg)
return 0;
return cg->cg_shader->passes;
}
static bool gl_cg_filter_type(unsigned idx, bool *smooth)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (cg && idx &&
(cg->cg_shader->pass[idx - 1].filter != RARCH_FILTER_UNSPEC)
)
{
*smooth = (cg->cg_shader->pass[idx - 1].filter == RARCH_FILTER_LINEAR);
return true;
}
return false;
}
static enum gfx_wrap_type gl_cg_wrap_type(unsigned idx)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (cg && idx)
return cg->cg_shader->pass[idx - 1].wrap;
return RARCH_WRAP_BORDER;
}
static void gl_cg_shader_scale(unsigned idx, struct gfx_fbo_scale *scale)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (cg && idx)
*scale = cg->cg_shader->pass[idx - 1].fbo;
else
scale->valid = false;
}
static unsigned gl_cg_get_prev_textures(void)
{
unsigned i, j;
unsigned max_prev = 0;
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (!cg)
return 0;
for (i = 1; i <= cg->cg_shader->passes; i++)
for (j = 0; j < PREV_TEXTURES; j++)
if (cg->prg[i].prev[j].tex)
max_prev = max(j + 1, max_prev);
return max_prev;
}
static bool gl_cg_mipmap_input(unsigned idx)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (cg && idx)
return cg->cg_shader->pass[idx - 1].mipmap;
return false;
}
static struct video_shader *gl_cg_get_current_shader(void)
{
driver_t *driver = driver_get_ptr();
cg_shader_data_t *cg = (cg_shader_data_t*)driver->video_shader_data;
if (!cg)
return NULL;
return cg->cg_shader;
}
const shader_backend_t gl_cg_backend = {
gl_cg_init,
gl_cg_deinit,
gl_cg_set_params,
gl_cg_use,
gl_cg_num,
gl_cg_filter_type,
gl_cg_wrap_type,
gl_cg_shader_scale,
gl_cg_set_coords,
gl_cg_set_mvp,
gl_cg_get_prev_textures,
gl_cg_mipmap_input,
gl_cg_get_current_shader,
RARCH_SHADER_CG,
"gl_cg"
};
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