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RetroArch/gfx/shader_cg.c
twinaphex fe510bca6f Indenting/C-style comments
2014-09-08 17:57:18 +02:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
*
* 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 "shader_cg.h"
#include "shader_common.h"
#include <Cg/cg.h>
#include <Cg/cgGL.h>
#include "../general.h"
#include <string.h>
#include "../compat/strl.h"
#include "../conf/config_file.h"
#include "../dynamic.h"
#include "../compat/posix_string.h"
#include "../file.h"
#include "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
static CGcontext cgCtx;
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];
};
static struct cg_program prg[GFX_MAX_SHADERS];
static bool cg_active;
static CGprofile cgVProf, cgFProf;
static unsigned active_index;
static struct gfx_shader *cg_shader;
static state_tracker_t *state_tracker;
static GLuint lut_textures[GFX_MAX_TEXTURES];
static CGparameter cg_attribs[PREV_TEXTURES + 1 + 4 + GFX_MAX_SHADERS];
static unsigned cg_attrib_index;
static char cg_alias_define[GFX_MAX_SHADERS][128];
static void gl_cg_reset_attrib(void)
{
unsigned i;
/* Add sanity check that we did not overflow. */
rarch_assert(cg_attrib_index <= ARRAY_SIZE(cg_attribs));
for (i = 0; i < cg_attrib_index; i++)
cgGLDisableClientState(cg_attribs[i]);
cg_attrib_index = 0;
}
static bool gl_cg_set_mvp(void *data, const math_matrix *mat)
{
(void)data;
if (cg_active && prg[active_index].mvp)
{
cgGLSetMatrixParameterfc(prg[active_index].mvp, mat->data);
return true;
}
return false;
}
#define SET_COORD(name, coords_name, len) do { \
if (prg[active_index].name) \
{ \
cgGLSetParameterPointer(prg[active_index].name, len, GL_FLOAT, 0, coords->coords_name); \
cgGLEnableClientState(prg[active_index].name); \
cg_attribs[cg_attrib_index++] = prg[active_index].name; \
} \
} while(0)
static bool gl_cg_set_coords(const struct gl_coords *coords)
{
if (!cg_active)
return false;
SET_COORD(vertex, vertex, 2);
SET_COORD(tex, tex_coord, 2);
SET_COORD(lut_tex, lut_tex_coord, 2);
SET_COORD(color, color, 4);
return true;
}
#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 struct gl_tex_info *info,
const struct gl_tex_info *prev_info,
const struct gl_tex_info *fbo_info,
unsigned fbo_info_cnt)
{
(void)data;
unsigned i;
if (!cg_active || (active_index == 0) ||
(active_index == GL_SHADER_STOCK_BLEND))
return;
/* Set frame. */
set_param_2f(prg[active_index].vid_size_f, width, height);
set_param_2f(prg[active_index].tex_size_f, tex_width, tex_height);
set_param_2f(prg[active_index].out_size_f, out_width, out_height);
set_param_1f(prg[active_index].frame_dir_f,
g_extern.frame_is_reverse ? -1.0 : 1.0);
set_param_2f(prg[active_index].vid_size_v, width, height);
set_param_2f(prg[active_index].tex_size_v, tex_width, tex_height);
set_param_2f(prg[active_index].out_size_v, out_width, out_height);
set_param_1f(prg[active_index].frame_dir_v,
g_extern.frame_is_reverse ? -1.0 : 1.0);
if (prg[active_index].frame_cnt_f || prg[active_index].frame_cnt_v)
{
unsigned modulo = cg_shader->pass[active_index - 1].frame_count_mod;
if (modulo)
frame_count %= modulo;
set_param_1f(prg[active_index].frame_cnt_f, (float)frame_count);
set_param_1f(prg[active_index].frame_cnt_v, (float)frame_count);
}
/* Set orig texture. */
CGparameter param = prg[active_index].orig.tex;
if (param)
{
cgGLSetTextureParameter(param, info->tex);
cgGLEnableTextureParameter(param);
}
set_param_2f(prg[active_index].orig.vid_size_v,
info->input_size[0], info->input_size[1]);
set_param_2f(prg[active_index].orig.vid_size_f,
info->input_size[0], info->input_size[1]);
set_param_2f(prg[active_index].orig.tex_size_v,
info->tex_size[0], info->tex_size[1]);
set_param_2f(prg[active_index].orig.tex_size_f,
info->tex_size[0], info->tex_size[1]);
if (prg[active_index].orig.coord)
{
cgGLSetParameterPointer(prg[active_index].orig.coord, 2,
GL_FLOAT, 0, info->coord);
cgGLEnableClientState(prg[active_index].orig.coord);
cg_attribs[cg_attrib_index++] = prg[active_index].orig.coord;
}
/* Set prev textures. */
for (i = 0; i < PREV_TEXTURES; i++)
{
param = prg[active_index].prev[i].tex;
if (param)
{
cgGLSetTextureParameter(param, prev_info[i].tex);
cgGLEnableTextureParameter(param);
}
set_param_2f(prg[active_index].prev[i].vid_size_v,
prev_info[i].input_size[0], prev_info[i].input_size[1]);
set_param_2f(prg[active_index].prev[i].vid_size_f,
prev_info[i].input_size[0], prev_info[i].input_size[1]);
set_param_2f(prg[active_index].prev[i].tex_size_v,
prev_info[i].tex_size[0], prev_info[i].tex_size[1]);
set_param_2f(prg[active_index].prev[i].tex_size_f,
prev_info[i].tex_size[0], prev_info[i].tex_size[1]);
if (prg[active_index].prev[i].coord)
{
cgGLSetParameterPointer(prg[active_index].prev[i].coord,
2, GL_FLOAT, 0, prev_info[i].coord);
cgGLEnableClientState(prg[active_index].prev[i].coord);
cg_attribs[cg_attrib_index++] = prg[active_index].prev[i].coord;
}
}
/* Set lookup textures. */
for (i = 0; i < cg_shader->luts; i++)
{
CGparameter fparam = cgGetNamedParameter(
prg[active_index].fprg, cg_shader->lut[i].id);
if (fparam)
{
cgGLSetTextureParameter(fparam, lut_textures[i]);
cgGLEnableTextureParameter(fparam);
}
CGparameter vparam = cgGetNamedParameter(
prg[active_index].vprg, cg_shader->lut[i].id);
if (vparam)
{
cgGLSetTextureParameter(vparam, lut_textures[i]);
cgGLEnableTextureParameter(vparam);
}
}
/* Set FBO textures. */
if (active_index)
{
for (i = 0; i < fbo_info_cnt; i++)
{
if (prg[active_index].fbo[i].tex)
{
cgGLSetTextureParameter(
prg[active_index].fbo[i].tex, fbo_info[i].tex);
cgGLEnableTextureParameter(prg[active_index].fbo[i].tex);
}
set_param_2f(prg[active_index].fbo[i].vid_size_v,
fbo_info[i].input_size[0], fbo_info[i].input_size[1]);
set_param_2f(prg[active_index].fbo[i].vid_size_f,
fbo_info[i].input_size[0], fbo_info[i].input_size[1]);
set_param_2f(prg[active_index].fbo[i].tex_size_v,
fbo_info[i].tex_size[0], fbo_info[i].tex_size[1]);
set_param_2f(prg[active_index].fbo[i].tex_size_f,
fbo_info[i].tex_size[0], fbo_info[i].tex_size[1]);
if (prg[active_index].fbo[i].coord)
{
cgGLSetParameterPointer(prg[active_index].fbo[i].coord,
2, GL_FLOAT, 0, fbo_info[i].coord);
cgGLEnableClientState(prg[active_index].fbo[i].coord);
cg_attribs[cg_attrib_index++] = prg[active_index].fbo[i].coord;
}
}
}
/* #pragma parameters. */
for (i = 0; i < cg_shader->num_parameters; i++)
{
CGparameter param_v = cgGetNamedParameter(
prg[active_index].vprg, cg_shader->parameters[i].id);
CGparameter param_f = cgGetNamedParameter(
prg[active_index].fprg, cg_shader->parameters[i].id);
set_param_1f(param_v, cg_shader->parameters[i].current);
set_param_1f(param_f, cg_shader->parameters[i].current);
}
/* Set state parameters. */
if (state_tracker)
{
/* Only query uniforms in first pass. */
static struct state_tracker_uniform info[MAX_VARIABLES];
static unsigned cnt = 0;
if (active_index == 1)
cnt = state_get_uniform(state_tracker, info,
MAX_VARIABLES, frame_count);
for (i = 0; i < cnt; i++)
{
CGparameter param_v = cgGetNamedParameter(
prg[active_index].vprg, info[i].id);
CGparameter param_f = cgGetNamedParameter(
prg[active_index].fprg, info[i].id);
set_param_1f(param_v, info[i].value);
set_param_1f(param_f, info[i].value);
}
}
}
static void gl_cg_deinit_progs(void)
{
unsigned i;
RARCH_LOG("CG: Destroying programs.\n");
cgGLUnbindProgram(cgFProf);
cgGLUnbindProgram(cgVProf);
/* Programs may alias [0]. */
for (i = 1; i < GFX_MAX_SHADERS; i++)
{
if (prg[i].fprg && prg[i].fprg != prg[0].fprg)
cgDestroyProgram(prg[i].fprg);
if (prg[i].vprg && prg[i].vprg != prg[0].vprg)
cgDestroyProgram(prg[i].vprg);
}
if (prg[0].fprg)
cgDestroyProgram(prg[0].fprg);
if (prg[0].vprg)
cgDestroyProgram(prg[0].vprg);
memset(prg, 0, sizeof(prg));
}
static void gl_cg_deinit_state(void)
{
gl_cg_reset_attrib();
cg_active = false;
gl_cg_deinit_progs();
if (cg_shader && cg_shader->luts)
{
glDeleteTextures(cg_shader->luts, lut_textures);
memset(lut_textures, 0, sizeof(lut_textures));
}
if (state_tracker)
{
state_tracker_free(state_tracker);
state_tracker = NULL;
}
free(cg_shader);
cg_shader = NULL;
}
/* Final deinit. */
static void gl_cg_deinit_context_state(void)
{
if (cgCtx)
{
RARCH_LOG("CG: Destroying context.\n");
cgDestroyContext(cgCtx);
cgCtx = NULL;
}
}
/* Full deinit. */
static void gl_cg_deinit(void)
{
gl_cg_deinit_state();
gl_cg_deinit_context_state();
}
#define SET_LISTING(type) \
{ \
const char *list = cgGetLastListing(cgCtx); \
if (list) \
listing_##type = strdup(list); \
}
static bool load_program(unsigned index,
const char *prog, bool path_is_file)
{
bool ret = true;
char *listing_f = NULL;
char *listing_v = NULL;
unsigned i, argc = 1;
const char *argv[2 + GFX_MAX_SHADERS] = {
"-DPARAMETER_UNIFORM",
NULL,
};
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
if (*(cg_alias_define[i]))
argv[argc++] = cg_alias_define[i];
}
if (path_is_file)
{
prg[index].fprg = cgCreateProgramFromFile(cgCtx, CG_SOURCE,
prog, cgFProf, "main_fragment", argv);
SET_LISTING(f);
prg[index].vprg = cgCreateProgramFromFile(cgCtx, CG_SOURCE,
prog, cgVProf, "main_vertex", argv);
SET_LISTING(v);
}
else
{
prg[index].fprg = cgCreateProgram(cgCtx, CG_SOURCE,
prog, cgFProf, "main_fragment", argv);
SET_LISTING(f);
prg[index].vprg = cgCreateProgram(cgCtx, CG_SOURCE,
prog, cgVProf, "main_vertex", argv);
SET_LISTING(v);
}
if (!prg[index].fprg || !prg[index].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(prg[index].fprg);
cgGLLoadProgram(prg[index].vprg);
end:
free(listing_f);
free(listing_v);
return ret;
}
static void set_program_base_attrib(unsigned i);
static bool load_stock(void)
{
if (!load_program(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(0);
return true;
}
static bool load_plain(const char *path)
{
if (!load_stock())
return false;
cg_shader = (struct gfx_shader*)calloc(1, sizeof(*cg_shader));
if (!cg_shader)
return false;
cg_shader->passes = 1;
if (path)
{
RARCH_LOG("Loading Cg file: %s\n", path);
strlcpy(cg_shader->pass[0].source.path, path,
sizeof(cg_shader->pass[0].source.path));
if (!load_program(1, path, true))
return false;
}
else
{
RARCH_LOG("Loading stock Cg file.\n");
prg[1] = prg[0];
}
gfx_shader_resolve_parameters(NULL, cg_shader);
return true;
}
#define print_buf(buf, ...) snprintf(buf, sizeof(buf), __VA_ARGS__)
static bool load_imports(void)
{
unsigned i;
if (!cg_shader->variables)
return true;
struct state_tracker_info tracker_info = {0};
for (i = 0; i < cg_shader->variables; i++)
{
unsigned memtype;
switch (cg_shader->variable[i].ram_type)
{
case RARCH_STATE_WRAM:
memtype = RETRO_MEMORY_SYSTEM_RAM;
break;
default:
memtype = -1u;
}
if ((memtype != -1u) &&
(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_shader->variable;
tracker_info.info_elem = cg_shader->variables;
#ifdef HAVE_PYTHON
if (*cg_shader->script_path)
{
tracker_info.script = cg_shader->script_path;
tracker_info.script_is_file = true;
}
tracker_info.script_class =
*cg_shader->script_class ? cg_shader->script_class : NULL;
#endif
state_tracker = state_tracker_init(&tracker_info);
if (!state_tracker)
RARCH_WARN("Failed to initialize state tracker.\n");
return true;
}
static bool load_shader(unsigned i)
{
RARCH_LOG("Loading Cg shader: \"%s\".\n",
cg_shader->pass[i].source.path);
if (!load_program(i + 1, cg_shader->pass[i].source.path, true))
return false;
return true;
}
static bool load_preset(const char *path)
{
unsigned i;
if (!load_stock())
return false;
RARCH_LOG("Loading Cg meta-shader: %s\n", path);
config_file_t *conf = config_file_new(path);
if (!conf)
{
RARCH_ERR("Failed to load preset.\n");
return false;
}
if (!cg_shader)
cg_shader = (struct gfx_shader*)calloc(1, sizeof(*cg_shader));
if (!cg_shader)
return false;
if (!gfx_shader_read_conf_cgp(conf, cg_shader))
{
RARCH_ERR("Failed to parse CGP file.\n");
config_file_free(conf);
return false;
}
gfx_shader_resolve_relative(cg_shader, path);
gfx_shader_resolve_parameters(conf, cg_shader);
config_file_free(conf);
if (cg_shader->passes > GFX_MAX_SHADERS - 3)
{
RARCH_WARN("Too many shaders ... Capping shader amount to %d.\n",
GFX_MAX_SHADERS - 3);
cg_shader->passes = GFX_MAX_SHADERS - 3;
}
for (i = 0; i < cg_shader->passes; i++)
if (*cg_shader->pass[i].alias)
snprintf(cg_alias_define[i], sizeof(cg_alias_define[i]),
"-D%s_ALIAS", cg_shader->pass[i].alias);
for (i = 0; i < cg_shader->passes; i++)
{
if (!load_shader(i))
{
RARCH_ERR("Failed to load shaders ...\n");
return false;
}
}
if (!gl_load_luts(cg_shader, lut_textures))
{
RARCH_ERR("Failed to load lookup textures ...\n");
return false;
}
if (!load_imports())
{
RARCH_ERR("Failed to load imports ...\n");
return false;
}
return true;
}
static void set_program_base_attrib(unsigned i)
{
CGparameter param = cgGetFirstParameter(prg[i].vprg, CG_PROGRAM);
for (; param; param = cgGetNextParameter(param))
{
if (cgGetParameterDirection(param) != CG_IN
|| cgGetParameterVariability(param) != CG_VARYING)
continue;
const char *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)
prg[i].tex = param;
else if (strcmp(semantic, "COLOR") == 0 || strcmp(semantic, "COLOR0") == 0)
prg[i].color = param;
else if (strcmp(semantic, "POSITION") == 0)
prg[i].vertex = param;
else if (strcmp(semantic, "TEXCOORD1") == 0)
prg[i].lut_tex = param;
}
if (!prg[i].tex)
prg[i].tex = cgGetNamedParameter(prg[i].vprg, "IN.tex_coord");
if (!prg[i].color)
prg[i].color = cgGetNamedParameter(prg[i].vprg, "IN.color");
if (!prg[i].vertex)
prg[i].vertex = cgGetNamedParameter(prg[i].vprg, "IN.vertex_coord");
if (!prg[i].lut_tex)
prg[i].lut_tex = cgGetNamedParameter(prg[i].vprg, "IN.lut_tex_coord");
}
static void set_pass_attrib(struct cg_program *prg, 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(prg->fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "%s.video_size", attr);
if (!fbo->vid_size_v)
fbo->vid_size_v = cgGetNamedParameter(prg->vprg, attr_buf);
if (!fbo->vid_size_f)
fbo->vid_size_f = cgGetNamedParameter(prg->fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "%s.texture_size", attr);
if (!fbo->tex_size_v)
fbo->tex_size_v = cgGetNamedParameter(prg->vprg, attr_buf);
if (!fbo->tex_size_f)
fbo->tex_size_f = cgGetNamedParameter(prg->fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "%s.tex_coord", attr);
if (!fbo->coord)
fbo->coord = cgGetNamedParameter(prg->vprg, attr_buf);
}
static void set_program_attributes(unsigned i)
{
unsigned j;
cgGLBindProgram(prg[i].fprg);
cgGLBindProgram(prg[i].vprg);
set_program_base_attrib(i);
prg[i].vid_size_f = cgGetNamedParameter(prg[i].fprg, "IN.video_size");
prg[i].tex_size_f = cgGetNamedParameter(prg[i].fprg, "IN.texture_size");
prg[i].out_size_f = cgGetNamedParameter(prg[i].fprg, "IN.output_size");
prg[i].frame_cnt_f = cgGetNamedParameter(prg[i].fprg, "IN.frame_count");
prg[i].frame_dir_f = cgGetNamedParameter(prg[i].fprg, "IN.frame_direction");
prg[i].vid_size_v = cgGetNamedParameter(prg[i].vprg, "IN.video_size");
prg[i].tex_size_v = cgGetNamedParameter(prg[i].vprg, "IN.texture_size");
prg[i].out_size_v = cgGetNamedParameter(prg[i].vprg, "IN.output_size");
prg[i].frame_cnt_v = cgGetNamedParameter(prg[i].vprg, "IN.frame_count");
prg[i].frame_dir_v = cgGetNamedParameter(prg[i].vprg, "IN.frame_direction");
prg[i].mvp = cgGetNamedParameter(prg[i].vprg, "modelViewProj");
if (!prg[i].mvp)
prg[i].mvp = cgGetNamedParameter(prg[i].vprg, "IN.mvp_matrix");
prg[i].orig.tex = cgGetNamedParameter(prg[i].fprg, "ORIG.texture");
prg[i].orig.vid_size_v = cgGetNamedParameter(prg[i].vprg, "ORIG.video_size");
prg[i].orig.vid_size_f = cgGetNamedParameter(prg[i].fprg, "ORIG.video_size");
prg[i].orig.tex_size_v = cgGetNamedParameter(prg[i].vprg, "ORIG.texture_size");
prg[i].orig.tex_size_f = cgGetNamedParameter(prg[i].fprg, "ORIG.texture_size");
prg[i].orig.coord = cgGetNamedParameter(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(&prg[i], &prg[i].orig, pass_str);
}
for (j = 0; j < PREV_TEXTURES; j++)
{
char attr_buf_tex[64];
char attr_buf_vid_size[64];
char attr_buf_tex_size[64];
char 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]);
prg[i].prev[j].tex = cgGetNamedParameter(prg[i].fprg, attr_buf_tex);
prg[i].prev[j].vid_size_v =
cgGetNamedParameter(prg[i].vprg, attr_buf_vid_size);
prg[i].prev[j].vid_size_f =
cgGetNamedParameter(prg[i].fprg, attr_buf_vid_size);
prg[i].prev[j].tex_size_v =
cgGetNamedParameter(prg[i].vprg, attr_buf_tex_size);
prg[i].prev[j].tex_size_f =
cgGetNamedParameter(prg[i].fprg, attr_buf_tex_size);
prg[i].prev[j].coord = cgGetNamedParameter(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(&prg[i], &prg[i].fbo[j], pass_str);
snprintf(pass_str, sizeof(pass_str), "PASSPREV%u", i - (j + 1));
set_pass_attrib(&prg[i], &prg[i].fbo[j], pass_str);
if (*cg_shader->pass[j].alias)
set_pass_attrib(&prg[i], &prg[i].fbo[j], cg_shader->pass[j].alias);
}
}
static bool gl_cg_init(void *data, const char *path)
{
unsigned i;
(void)data;
#ifdef HAVE_CG_RUNTIME_COMPILER
cgRTCgcInit();
#endif
if (!cgCtx)
cgCtx = cgCreateContext();
if (cgCtx == NULL)
{
RARCH_ERR("Failed to create Cg context\n");
return false;
}
#ifdef RARCH_CG_DEBUG
cgGLSetDebugMode(CG_TRUE);
cgSetErrorHandler(cg_error_handler, NULL);
#endif
cgFProf = cgGLGetLatestProfile(CG_GL_FRAGMENT);
cgVProf = cgGLGetLatestProfile(CG_GL_VERTEX);
if (cgFProf == CG_PROFILE_UNKNOWN || cgVProf == CG_PROFILE_UNKNOWN)
{
RARCH_ERR("Invalid profile type\n");
goto error;
}
#ifndef HAVE_GCMGL
RARCH_LOG("[Cg]: Vertex profile: %s\n", cgGetProfileString(cgVProf));
RARCH_LOG("[Cg]: Fragment profile: %s\n", cgGetProfileString(cgFProf));
#endif
cgGLSetOptimalOptions(cgFProf);
cgGLSetOptimalOptions(cgVProf);
cgGLEnableProfile(cgFProf);
cgGLEnableProfile(cgVProf);
memset(cg_alias_define, 0, sizeof(cg_alias_define));
if (path && strcmp(path_get_extension(path), "cgp") == 0)
{
if (!load_preset(path))
goto error;
}
else
{
if (!load_plain(path))
goto error;
}
prg[0].mvp = cgGetNamedParameter(prg[0].vprg, "IN.mvp_matrix");
for (i = 1; i <= cg_shader->passes; i++)
set_program_attributes(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. */
prg[cg_shader->passes + 1] = prg[0];
/* No need to apply Android hack in Cg. */
prg[GL_SHADER_STOCK_BLEND] = prg[0];
cgGLBindProgram(prg[1].fprg);
cgGLBindProgram(prg[1].vprg);
cg_active = true;
return true;
error:
gl_cg_deinit();
return false;
}
static void gl_cg_use(void *data, unsigned index)
{
(void)data;
if (cg_active && prg[index].vprg && prg[index].fprg)
{
gl_cg_reset_attrib();
active_index = index;
cgGLBindProgram(prg[index].vprg);
cgGLBindProgram(prg[index].fprg);
}
}
static unsigned gl_cg_num(void)
{
if (cg_active)
return cg_shader->passes;
return 0;
}
static bool gl_cg_filter_type(unsigned index, bool *smooth)
{
if (cg_active && index)
{
if (cg_shader->pass[index - 1].filter == RARCH_FILTER_UNSPEC)
return false;
*smooth = cg_shader->pass[index - 1].filter == RARCH_FILTER_LINEAR;
return true;
}
return false;
}
static enum gfx_wrap_type gl_cg_wrap_type(unsigned index)
{
if (cg_active && index)
return cg_shader->pass[index - 1].wrap;
return RARCH_WRAP_BORDER;
}
static void gl_cg_shader_scale(unsigned index, struct gfx_fbo_scale *scale)
{
if (cg_active && index)
*scale = cg_shader->pass[index - 1].fbo;
else
scale->valid = false;
}
static unsigned gl_cg_get_prev_textures(void)
{
unsigned i, j;
if (!cg_active)
return 0;
unsigned max_prev = 0;
for (i = 1; i <= cg_shader->passes; i++)
for (j = 0; j < PREV_TEXTURES; j++)
if (prg[i].prev[j].tex)
max_prev = max(j + 1, max_prev);
return max_prev;
}
static bool gl_cg_mipmap_input(unsigned index)
{
if (cg_active && index)
return cg_shader->pass[index - 1].mipmap;
return false;
}
static struct gfx_shader *gl_cg_get_current_shader(void)
{
return cg_active ? cg_shader : NULL;
}
const gl_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,
};
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