/*
* @brief
*/
void R_ProgramVariable(r_variable_t *variable, GLenum type, const char *name) {
memset(variable, 0, sizeof(*variable));
variable->location = -1;
if (!r_state.active_program) {
Com_Warn("No program currently bound\n");
return;
}
switch (type) {
case R_ATTRIBUTE:
variable->location = qglGetAttribLocation(r_state.active_program->id, name);
break;
default:
variable->location = qglGetUniformLocation(r_state.active_program->id, name);
break;
}
if (variable->location == -1) {
Com_Warn("Failed to resolve variable %s in program %s\n", name,
r_state.active_program->name);
return;
}
variable->type = type;
g_strlcpy(variable->name, name, sizeof(variable->name));
memset(&variable->value, 0xff, sizeof(variable->value));
}
static r_progvar_t* R_ProgramVariable (int type, const char* name)
{
r_progvar_t* v;
int i;
if (!r_state.active_program) {
Com_DPrintf(DEBUG_RENDERER, "R_ProgramVariable: \"%s\" - No program bound.\n", name);
return nullptr;
}
/* find the variable */
for (i = 0; i < MAX_PROGRAM_VARS; i++) {
v = &r_state.active_program->vars[i];
if (!v->location)
break;
if (v->type == type && Q_streq(v->name, name))
return v;
}
if (i == MAX_PROGRAM_VARS) {
Com_Printf("R_ProgramVariable: MAX_PROGRAM_VARS reached.\n");
return nullptr;
}
/* or query for it */
if (type == GL_UNIFORM)
v->location = qglGetUniformLocation(r_state.active_program->id, name);
else
v->location = qglGetAttribLocation(r_state.active_program->id, name);
if (v->location == -1) {
Com_Printf("R_ProgramVariable: Could not find parameter %s in program %s.\n", name, r_state.active_program->name);
v->location = 0;
return nullptr;
}
v->type = type;
Q_strncpyz(v->name, name, sizeof(v->name));
return v;
}
