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Add helper function to replace Cg shaders on-the-fly.

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This commit is contained in:
Themaister 2012-01-29 23:43:11 +01:00
parent 1cfc4c6cc0
commit 230f47d00c
2 changed files with 41 additions and 0 deletions
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39
gfx/shader_cg.c
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@ -1160,3 +1160,42 @@ 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 (load_program(index, path, true))
{
set_program_attributes(index);
return true;
}
else
{
// Always make sure we have a valid shader.
memcpy(&prg[index], &prg[0], sizeof(prg[0]));
return false;
}
}

2
gfx/shader_cg.h
View File

@ -52,4 +52,6 @@ void gl_cg_shader_scale(unsigned index, struct gl_fbo_scale *scale);
void gl_cg_set_menu_shader(const char *path);
void gl_cg_set_compiler_args(const char **argv);
bool gl_cg_load_shader(unsigned index, const char *path);
#endif