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RetroArch/gfx/shader_cg.c
Themaister e9cfb95900 Add fallback path for RGBA. 
This is necessary for GLES devices which do not support BGRA_EXT.
2013-01-03 01:20:35 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2013 - 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 <Cg/cg.h>
#include <Cg/cgGL.h>
#include "../general.h"
#include <string.h>
#include "../compat/strl.h"
#include "../conf/config_file.h"
#include "image.h"
#include "../dynamic.h"
#include "../compat/posix_string.h"
#include "../file.h"
#include "state_tracker.h"
//#define RARCH_CG_DEBUG
// Used when we call deactivate() since just unbinding the program didn't seem to work... :(
static const char *stock_cg_program =
"void main_vertex"
"("
" float4 position : POSITION,"
" float2 texCoord : TEXCOORD0,"
" float4 color : COLOR,"
""
" uniform float4x4 modelViewProj,"
""
" out float4 oPosition : POSITION,"
" out float2 otexCoord : TEXCOORD0,"
" out float4 oColor : COLOR"
")"
"{"
" oPosition = mul(modelViewProj, position);"
" otexCoord = texCoord;"
" oColor = color;"
"}"
""
"float4 main_fragment(in float4 color : COLOR, float2 tex : TEXCOORD0, uniform sampler2D s0 : TEXUNIT0) : COLOR"
"{"
" return color * tex2D(s0, tex);"
"}";
static char *menu_cg_program;
#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_TEXTURES 8
#define MAX_VARIABLES 64
#define PREV_TEXTURES 7
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[RARCH_CG_MAX_SHADERS];
struct cg_fbo_params orig;
struct cg_fbo_params prev[PREV_TEXTURES];
};
#define FILTER_UNSPEC 0
#define FILTER_LINEAR 1
#define FILTER_NEAREST 2
static struct cg_program prg[RARCH_CG_MAX_SHADERS];
static const char **cg_arguments;
static bool cg_active = false;
static CGprofile cgVProf, cgFProf;
static unsigned active_index = 0;
static unsigned cg_shader_num = 0;
static struct gl_fbo_scale cg_scale[RARCH_CG_MAX_SHADERS];
static unsigned fbo_smooth[RARCH_CG_MAX_SHADERS];
static GLuint lut_textures[MAX_TEXTURES];
static unsigned lut_textures_num = 0;
static char lut_textures_uniform[MAX_TEXTURES][64];
static CGparameter cg_attribs[PREV_TEXTURES + 1 + 4 + RARCH_CG_MAX_SHADERS];
static unsigned cg_attrib_index;
static state_tracker_t *state_tracker = NULL;
static void gl_cg_reset_attrib(void)
{
for (unsigned i = 0; i < cg_attrib_index; i++)
cgGLDisableClientState(cg_attribs[i]);
cg_attrib_index = 0;
}
bool gl_cg_set_mvp(const math_matrix *mat)
{
if (cg_active && prg[active_index].mvp)
{
cgGLSetMatrixParameterfc(prg[active_index].mvp, mat->data);
return true;
}
else
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)
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)
void gl_cg_set_params(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)
{
if (!cg_active || (active_index == 0))
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_cnt_f, (float)frame_count);
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_cnt_v, (float)frame_count);
set_param_1f(prg[active_index].frame_dir_v, g_extern.frame_is_reverse ? -1.0 : 1.0);
if (active_index == RARCH_CG_MENU_SHADER_INDEX)
return;
// 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 (unsigned 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 (unsigned i = 0; i < lut_textures_num; i++)
{
CGparameter param = cgGetNamedParameter(prg[active_index].fprg, lut_textures_uniform[i]);
if (param)
{
cgGLSetTextureParameter(param, lut_textures[i]);
cgGLEnableTextureParameter(param);
}
}
// Set FBO textures.
if (active_index > 2)
{
for (unsigned 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;
}
}
}
// 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 (unsigned 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)
{
RARCH_LOG("CG: Destroying programs.\n");
cgGLUnbindProgram(cgFProf);
cgGLUnbindProgram(cgVProf);
// Programs may alias [0].
for (unsigned i = 1; i < RARCH_CG_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;
cg_shader_num = 0;
gl_cg_deinit_progs();
memset(cg_scale, 0, sizeof(cg_scale));
memset(fbo_smooth, 0, sizeof(fbo_smooth));
glDeleteTextures(lut_textures_num, lut_textures);
lut_textures_num = 0;
if (state_tracker)
{
state_tracker_free(state_tracker);
state_tracker = NULL;
}
}
// Final deinit.
static void gl_cg_deinit_context_state(void)
{
if (menu_cg_program)
{
free(menu_cg_program);
menu_cg_program = NULL;
}
// Destroying context breaks on PS3 for some unknown reason.
#ifndef __CELLOS_LV2__
if (cgCtx)
{
RARCH_LOG("CG: Destroying context.\n");
cgDestroyContext(cgCtx);
cgCtx = NULL;
}
#endif
}
// Full deinit.
void gl_cg_deinit(void)
{
if (!cg_active)
return;
gl_cg_deinit_state();
gl_cg_deinit_context_state();
}
// Deinit as much as possible without resetting context (broken on PS3),
// and reinit cleanly.
// If this fails, we're kinda screwed without resetting everything on PS3.
bool gl_cg_reinit(const char *path)
{
if (cg_active)
gl_cg_deinit_state();
return gl_cg_init(path);
}
#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;
if (path_is_file)
{
prg[index].fprg = cgCreateProgramFromFile(cgCtx, CG_SOURCE, prog, cgFProf, "main_fragment", cg_arguments);
SET_LISTING(f);
prg[index].vprg = cgCreateProgramFromFile(cgCtx, CG_SOURCE, prog, cgVProf, "main_vertex", cg_arguments);
SET_LISTING(v);
}
else
{
prg[index].fprg = cgCreateProgram(cgCtx, CG_SOURCE, prog, cgFProf, "main_fragment", cg_arguments);
SET_LISTING(f);
prg[index].vprg = cgCreateProgram(cgCtx, CG_SOURCE, prog, cgVProf, "main_vertex", cg_arguments);
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;
RARCH_LOG("Loading Cg file: %s\n", path);
if (!load_program(1, path, true))
return false;
if (*g_settings.video.second_pass_shader && g_settings.video.render_to_texture)
{
if (!load_program(2, g_settings.video.second_pass_shader, true))
return false;
cg_shader_num = 2;
}
else
{
prg[2] = prg[0];
cg_shader_num = 1;
}
return true;
}
static bool load_menu_shader(void)
{
return load_program(RARCH_CG_MENU_SHADER_INDEX, menu_cg_program, true);
}
#define print_buf(buf, ...) snprintf(buf, sizeof(buf), __VA_ARGS__)
#ifdef HAVE_OPENGLES2
#define BORDER_FUNC GL_CLAMP_TO_EDGE
#else
#define BORDER_FUNC GL_CLAMP_TO_BORDER
#endif
static void load_texture_data(GLuint *obj, const struct texture_image *img, bool smooth)
{
glGenTextures(1, obj);
glBindTexture(GL_TEXTURE_2D, *obj);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, BORDER_FUNC);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, BORDER_FUNC);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, smooth ? GL_LINEAR : GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, smooth ? GL_LINEAR : GL_NEAREST);
#ifndef HAVE_PSGL
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
#endif
glTexImage2D(GL_TEXTURE_2D,
0, driver.gfx_use_rgba ? GL_RGBA : RARCH_GL_INTERNAL_FORMAT32, img->width, img->height,
0, driver.gfx_use_rgba ? GL_RGBA : RARCH_GL_TEXTURE_TYPE32, RARCH_GL_FORMAT32, img->pixels);
free(img->pixels);
}
static bool load_textures(const char *cgp_path, config_file_t *conf)
{
bool ret = true;
char *textures = NULL;
if (!config_get_string(conf, "textures", &textures)) // No textures here ...
return true;
char *save;
const char *id = strtok_r(textures, ";", &save);
while (id && lut_textures_num < MAX_TEXTURES)
{
char path[PATH_MAX];
if (!config_get_array(conf, id, path, sizeof(path)))
{
RARCH_ERR("Cannot find path to texture \"%s\" ...\n", id);
ret = false;
goto end;
}
char id_filter[64];
print_buf(id_filter, "%s_linear", id);
bool smooth = true;
if (!config_get_bool(conf, id_filter, &smooth))
smooth = true;
char id_absolute[64];
print_buf(id_absolute, "%s_absolute", id);
bool absolute = false;
if (!config_get_bool(conf, id_absolute, &absolute))
absolute = false;
char image_path[PATH_MAX];
fill_pathname_resolve_relative(image_path, cgp_path, path, sizeof(image_path));
RARCH_LOG("Loading image from: \"%s\".\n", image_path);
struct texture_image img;
if (!texture_image_load(image_path, &img))
{
RARCH_ERR("Failed to load picture ...\n");
ret = false;
goto end;
}
strlcpy(lut_textures_uniform[lut_textures_num],
id, sizeof(lut_textures_uniform[lut_textures_num]));
load_texture_data(&lut_textures[lut_textures_num], &img, smooth);
lut_textures_num++;
id = strtok_r(NULL, ";", &save);
}
end:
free(textures);
glBindTexture(GL_TEXTURE_2D, 0);
return ret;
}
static bool load_imports(const char *cgp_path, config_file_t *conf)
{
bool ret = true;
char *imports = NULL;
if (!config_get_string(conf, "imports", &imports))
return true;
struct state_tracker_uniform_info info[MAX_VARIABLES];
unsigned info_cnt = 0;
struct state_tracker_info tracker_info = {0};
#ifdef HAVE_PYTHON
char script_path[PATH_MAX];
char *script = NULL;
char *script_class = NULL;
#endif
char *save;
const char *id = strtok_r(imports, ";", &save);
while (id && info_cnt < MAX_VARIABLES)
{
char semantic_buf[64];
char wram_buf[64];
char input_slot_buf[64];
char mask_buf[64];
char equal_buf[64];
print_buf(semantic_buf, "%s_semantic", id);
print_buf(wram_buf, "%s_wram", id);
print_buf(input_slot_buf, "%s_input_slot", id);
print_buf(mask_buf, "%s_mask", id);
print_buf(equal_buf, "%s_equal", id);
char *semantic = NULL;
config_get_string(conf, semantic_buf, &semantic);
if (!semantic)
{
RARCH_ERR("No semantic for import variable.\n");
ret = false;
goto end;
}
enum state_tracker_type tracker_type;
enum state_ram_type ram_type = RARCH_STATE_NONE;
if (strcmp(semantic, "capture") == 0)
tracker_type = RARCH_STATE_CAPTURE;
else if (strcmp(semantic, "transition") == 0)
tracker_type = RARCH_STATE_TRANSITION;
else if (strcmp(semantic, "transition_count") == 0)
tracker_type = RARCH_STATE_TRANSITION_COUNT;
else if (strcmp(semantic, "capture_previous") == 0)
tracker_type = RARCH_STATE_CAPTURE_PREV;
else if (strcmp(semantic, "transition_previous") == 0)
tracker_type = RARCH_STATE_TRANSITION_PREV;
#ifdef HAVE_PYTHON
else if (strcmp(semantic, "python") == 0)
tracker_type = RARCH_STATE_PYTHON;
#endif
else
{
RARCH_ERR("Invalid semantic.\n");
ret = false;
goto end;
}
unsigned addr = 0;
#ifdef HAVE_PYTHON
if (tracker_type != RARCH_STATE_PYTHON)
#endif
{
unsigned input_slot = 0;
if (config_get_hex(conf, input_slot_buf, &input_slot))
{
switch (input_slot)
{
case 1:
ram_type = RARCH_STATE_INPUT_SLOT1;
break;
case 2:
ram_type = RARCH_STATE_INPUT_SLOT2;
break;
default:
RARCH_ERR("Invalid input slot for import.\n");
ret = false;
goto end;
}
}
else if (config_get_hex(conf, wram_buf, &addr))
ram_type = RARCH_STATE_WRAM;
else
{
RARCH_ERR("No address assigned to semantic.\n");
ret = false;
goto end;
}
}
unsigned memtype;
switch (ram_type)
{
case RARCH_STATE_WRAM:
memtype = RETRO_MEMORY_SYSTEM_RAM;
break;
default:
memtype = -1u;
}
if ((memtype != -1u) && (addr >= pretro_get_memory_size(memtype)))
{
RARCH_ERR("Address out of bounds.\n");
ret = false;
goto end;
}
unsigned bitmask = 0;
if (!config_get_hex(conf, mask_buf, &bitmask))
bitmask = 0;
unsigned bitequal = 0;
if (!config_get_hex(conf, equal_buf, &bitequal))
bitequal = 0;
strlcpy(info[info_cnt].id, id, sizeof(info[info_cnt].id));
info[info_cnt].addr = addr;
info[info_cnt].type = tracker_type;
info[info_cnt].ram_type = ram_type;
info[info_cnt].mask = bitmask;
info[info_cnt].equal = bitequal;
info_cnt++;
free(semantic);
id = strtok_r(NULL, ";", &save);
}
tracker_info.wram = (uint8_t*)pretro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
tracker_info.info = info;
tracker_info.info_elem = info_cnt;
#ifdef HAVE_PYTHON
if (config_get_string(conf, "import_script", &script))
{
fill_pathname_resolve_relative(script_path, cgp_path, script, sizeof(script_path));
tracker_info.script = script_path;
}
if (config_get_string(conf, "import_script_class", &script_class))
tracker_info.script_class = script_class;
tracker_info.script_is_file = true;
#endif
state_tracker = state_tracker_init(&tracker_info);
if (!state_tracker)
RARCH_WARN("Failed to initialize state tracker.\n");
#ifdef HAVE_PYTHON
if (script)
free(script);
if (script_class)
free(script_class);
#endif
end:
free(imports);
return ret;
}
static bool load_shader(const char *cgp_path, unsigned i, config_file_t *conf)
{
char *shader_path = NULL;
char attr_buf[64];
char path_buf[PATH_MAX];
print_buf(attr_buf, "shader%u", i);
if (config_get_string(conf, attr_buf, &shader_path))
{
fill_pathname_resolve_relative(path_buf, cgp_path, shader_path, sizeof(path_buf));
free(shader_path);
}
else
{
RARCH_ERR("Didn't find shader path in config ...\n");
return false;
}
RARCH_LOG("Loading Cg shader: \"%s\".\n", path_buf);
if (!load_program(i + 1, path_buf, true))
return false;
return true;
}
static bool load_shader_params(unsigned i, config_file_t *conf)
{
bool ret = true;
char *scale_type = NULL;
char *scale_type_x = NULL;
char *scale_type_y = NULL;
bool has_scale_type;
bool has_scale_type_x;
bool has_scale_type_y;
char scale_name_buf[64];
print_buf(scale_name_buf, "scale_type%u", i);
has_scale_type = config_get_string(conf, scale_name_buf, &scale_type);
print_buf(scale_name_buf, "scale_type_x%u", i);
has_scale_type_x = config_get_string(conf, scale_name_buf, &scale_type_x);
print_buf(scale_name_buf, "scale_type_y%u", i);
has_scale_type_y = config_get_string(conf, scale_name_buf, &scale_type_y);
if (!has_scale_type && !has_scale_type_x && !has_scale_type_y)
return true;
if (has_scale_type)
{
free(scale_type_x);
free(scale_type_y);
scale_type_x = strdup(scale_type);
scale_type_y = strdup(scale_type);
free(scale_type);
scale_type = NULL;
}
char attr_name_buf[64];
float fattr = 0.0f;
int iattr = 0;
struct gl_fbo_scale *scale = &cg_scale[i + 1]; // Shader 0 is passthrough shader. Start at 1.
scale->valid = true;
scale->type_x = RARCH_SCALE_INPUT;
scale->type_y = RARCH_SCALE_INPUT;
scale->scale_x = 1.0;
scale->scale_y = 1.0;
const struct retro_game_geometry *geom = &g_extern.system.av_info.geometry;
scale->abs_x = geom->base_width;
scale->abs_y = geom->base_height;
if (scale_type_x)
{
if (strcmp(scale_type_x, "source") == 0)
scale->type_x = RARCH_SCALE_INPUT;
else if (strcmp(scale_type_x, "viewport") == 0)
scale->type_x = RARCH_SCALE_VIEWPORT;
else if (strcmp(scale_type_x, "absolute") == 0)
scale->type_x = RARCH_SCALE_ABSOLUTE;
else
{
RARCH_ERR("Invalid attribute.\n");
ret = false;
goto end;
}
}
if (scale_type_y)
{
if (strcmp(scale_type_y, "source") == 0)
scale->type_y = RARCH_SCALE_INPUT;
else if (strcmp(scale_type_y, "viewport") == 0)
scale->type_y = RARCH_SCALE_VIEWPORT;
else if (strcmp(scale_type_y, "absolute") == 0)
scale->type_y = RARCH_SCALE_ABSOLUTE;
else
{
RARCH_ERR("Invalid attribute.\n");
ret = false;
goto end;
}
}
if (scale->type_x == RARCH_SCALE_ABSOLUTE)
{
print_buf(attr_name_buf, "scale%u", i);
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_x = iattr;
else
{
print_buf(attr_name_buf, "scale_x%u", i);
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_x = iattr;
}
}
else
{
print_buf(attr_name_buf, "scale%u", i);
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_x = fattr;
else
{
print_buf(attr_name_buf, "scale_x%u", i);
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_x = fattr;
}
}
if (scale->type_y == RARCH_SCALE_ABSOLUTE)
{
print_buf(attr_name_buf, "scale%u", i);
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_y = iattr;
else
{
print_buf(attr_name_buf, "scale_y%u", i);
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_y = iattr;
}
}
else
{
print_buf(attr_name_buf, "scale%u", i);
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_y = fattr;
else
{
print_buf(attr_name_buf, "scale_y%u", i);
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_y = fattr;
}
}
end:
free(scale_type);
free(scale_type_x);
free(scale_type_y);
return ret;
}
static bool load_preset(const char *path)
{
bool ret = true;
if (!load_stock())
return false;
int shaders = 0;
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");
ret = false;
goto end;
}
if (!config_get_int(conf, "shaders", &shaders))
{
RARCH_ERR("Cannot find \"shaders\" param.\n");
ret = false;
goto end;
}
if (shaders < 1)
{
RARCH_ERR("Need to define at least 1 shader.\n");
ret = false;
goto end;
}
cg_shader_num = shaders;
if (shaders > RARCH_CG_MAX_SHADERS - 3)
{
RARCH_WARN("Too many shaders ... Capping shader amount to %d.\n", RARCH_CG_MAX_SHADERS - 3);
cg_shader_num = shaders = RARCH_CG_MAX_SHADERS - 3;
}
// 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[shaders + 1] = prg[0];
// Check filter params.
for (int i = 0; i < shaders; i++)
{
bool smooth = false;
char filter_name_buf[64];
print_buf(filter_name_buf, "filter_linear%u", i);
if (config_get_bool(conf, filter_name_buf, &smooth))
fbo_smooth[i + 1] = smooth ? FILTER_LINEAR : FILTER_NEAREST;
}
for (int i = 0; i < shaders; i++)
{
if (!load_shader_params(i, conf))
{
RARCH_ERR("Failed to load shader params ...\n");
ret = false;
goto end;
}
if (!load_shader(path, i, conf))
{
RARCH_ERR("Failed to load shaders ...\n");
ret = false;
goto end;
}
}
if (!load_textures(path, conf))
{
RARCH_ERR("Failed to load lookup textures ...\n");
ret = false;
goto end;
}
if (!load_imports(path, conf))
{
RARCH_ERR("Failed to load imports ...\n");
ret = false;
goto end;
}
end:
if (conf)
config_file_free(conf);
return ret;
}
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;
}
}
static void set_program_attributes(unsigned i)
{
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 (i == RARCH_CG_MENU_SHADER_INDEX)
return;
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");
for (unsigned 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 (unsigned j = 0; j < i - 1; j++)
{
char attr_buf[64];
snprintf(attr_buf, sizeof(attr_buf), "PASS%u.texture", j + 1);
prg[i].fbo[j].tex = cgGetNamedParameter(prg[i].fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "PASS%u.video_size", j + 1);
prg[i].fbo[j].vid_size_v = cgGetNamedParameter(prg[i].vprg, attr_buf);
prg[i].fbo[j].vid_size_f = cgGetNamedParameter(prg[i].fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "PASS%u.texture_size", j + 1);
prg[i].fbo[j].tex_size_v = cgGetNamedParameter(prg[i].vprg, attr_buf);
prg[i].fbo[j].tex_size_f = cgGetNamedParameter(prg[i].fprg, attr_buf);
snprintf(attr_buf, sizeof(attr_buf), "PASS%u.tex_coord", j + 1);
prg[i].fbo[j].coord = cgGetNamedParameter(prg[i].vprg, attr_buf);
}
}
bool gl_cg_init(const char *path)
{
#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");
return false;
}
RARCH_LOG("[Cg]: Vertex profile: %s\n", cgGetProfileString(cgVProf));
RARCH_LOG("[Cg]: Fragment profile: %s\n", cgGetProfileString(cgFProf));
cgGLSetOptimalOptions(cgFProf);
cgGLSetOptimalOptions(cgVProf);
cgGLEnableProfile(cgFProf);
cgGLEnableProfile(cgVProf);
if (strstr(path, ".cgp"))
{
if (!load_preset(path))
return false;
}
else
{
if (!load_plain(path))
return false;
}
if (menu_cg_program && !load_menu_shader())
return false;
prg[0].mvp = cgGetNamedParameter(prg[0].vprg, "modelViewProj");
for (unsigned i = 1; i <= cg_shader_num; i++)
set_program_attributes(i);
if (menu_cg_program)
set_program_attributes(RARCH_CG_MENU_SHADER_INDEX);
cgGLBindProgram(prg[1].fprg);
cgGLBindProgram(prg[1].vprg);
cg_active = true;
return true;
}
void gl_cg_use(unsigned index)
{
if (cg_active && prg[index].vprg && prg[index].fprg)
{
gl_cg_reset_attrib();
active_index = index;
cgGLBindProgram(prg[index].vprg);
cgGLBindProgram(prg[index].fprg);
}
}
unsigned gl_cg_num(void)
{
if (cg_active)
return cg_shader_num;
else
return 0;
}
bool gl_cg_filter_type(unsigned index, bool *smooth)
{
if (cg_active)
{
if (fbo_smooth[index] == FILTER_UNSPEC)
return false;
*smooth = (fbo_smooth[index] == FILTER_LINEAR);
return true;
}
else
return false;
}
void gl_cg_shader_scale(unsigned index, struct gl_fbo_scale *scale)
{
if (cg_active)
*scale = cg_scale[index];
else
scale->valid = false;
}
void gl_cg_set_menu_shader(const char *path)
{
if (menu_cg_program)
free(menu_cg_program);
menu_cg_program = strdup(path);
}
void gl_cg_set_compiler_args(const char **argv)
{
cg_arguments = argv;
}
bool gl_cg_load_shader(unsigned index, const char *path)
{
if (!cg_active)
return false;
if (index == 0)
return false;
if (prg[index].fprg)
{
cgGLUnbindProgram(cgFProf);
if (prg[0].fprg != prg[index].fprg)
cgDestroyProgram(prg[index].fprg);
}
if (prg[index].vprg)
{
cgGLUnbindProgram(cgVProf);
if (prg[0].vprg != prg[index].vprg)
cgDestroyProgram(prg[index].vprg);
}
memset(&prg[index], 0, sizeof(prg[index]));
if (path)
{
if (load_program(index, path, true))
{
set_program_attributes(index);
return true;
}
else
{
// Always make sure we have a valid shader.
prg[index] = prg[0];
return false;
}
}
else
{
prg[index] = prg[0];
return true;
}
}
bool gl_cg_save_cgp(const char *path, const struct gl_cg_cgp_info *info)
{
if (!info->shader[0] || !*info->shader[0])
return false;
FILE *file = fopen(path, "w");
if (!file)
return false;
unsigned shaders = info->shader[1] && *info->shader[1] ? 2 : 1;
fprintf(file, "shaders = %u\n", shaders);
fprintf(file, "shader0 = \"%s\"\n", info->shader[0]);
if (shaders == 2)
fprintf(file, "shader1 = \"%s\"\n", info->shader[1]);
fprintf(file, "filter_linear0 = %s\n", info->filter_linear[0] ? "true" : "false");
if (info->render_to_texture)
{
fprintf(file, "filter_linear1 = %s\n", info->filter_linear[1] ? "true" : "false");
fprintf(file, "scale_type0 = source\n");
fprintf(file, "scale0 = %.1f\n", info->fbo_scale);
}
if (info->lut_texture_path && info->lut_texture_id)
{
fprintf(file, "textures = %s\n", info->lut_texture_id);
fprintf(file, "%s = \"%s\"\n",
info->lut_texture_id, info->lut_texture_path);
fprintf(file, "%s_absolute = %s\n",
info->lut_texture_id,
info->lut_texture_absolute ? "true" : "false");
}
fclose(file);
return true;
}
void gl_cg_invalidate_context(void)
{
cgCtx = NULL;
}
unsigned gl_cg_get_lut_info(struct gl_cg_lut_info *info, unsigned elems)
{
if (!cg_active)
return 0;
elems = elems > lut_textures_num ? lut_textures_num : elems;
for (unsigned i = 0; i < elems; i++)
{
strlcpy(info[i].id, lut_textures_uniform[i], sizeof(info[i].id));
info[i].tex = lut_textures[i];
}
return elems;
}
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_shader_scale,
gl_cg_set_coords,
gl_cg_set_mvp,
};
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