/**
* Make sure there are enough unused parameter slots. Reallocate the list
* if needed.
*
* \param paramList where to reserve parameter slots
* \param reserve_slots number of slots to reserve
*/
void
_mesa_reserve_parameter_storage(struct gl_program_parameter_list *paramList,
unsigned reserve_slots)
{
const GLuint oldNum = paramList->NumParameters;
if (oldNum + reserve_slots > paramList->Size) {
/* Need to grow the parameter list array (alloc some extra) */
paramList->Size = paramList->Size + 4 * reserve_slots;
/* realloc arrays */
paramList->Parameters =
realloc(paramList->Parameters,
paramList->Size * sizeof(struct gl_program_parameter));
paramList->ParameterValueOffset =
realloc(paramList->ParameterValueOffset,
paramList->Size * sizeof(unsigned));
paramList->ParameterValues = (gl_constant_value *)
_mesa_align_realloc(paramList->ParameterValues, /* old buf */
oldNum * 4 * sizeof(gl_constant_value),/* old sz */
paramList->Size*4*sizeof(gl_constant_value),/*new*/
16);
}
}
/**
* Add a new parameter to a parameter list.
* Note that parameter values are usually 4-element GLfloat vectors.
* When size > 4 we'll allocate a sequential block of parameters to
* store all the values (in blocks of 4).
*
* \param paramList the list to add the parameter to
* \param type type of parameter, such as
* \param name the parameter name, will be duplicated/copied!
* \param size number of elements in 'values' vector (1..4, or more)
* \param values initial parameter value, up to 4 GLfloats, or NULL
* \param state state indexes, or NULL
* \return index of new parameter in the list, or -1 if error (out of mem)
*/
GLint
_mesa_add_parameter(struct gl_program_parameter_list *paramList,
enum register_file type, const char *name,
GLuint size, GLenum datatype, const GLfloat *values,
const gl_state_index state[STATE_LENGTH])
{
const GLuint oldNum = paramList->NumParameters;
const GLuint sz4 = (size + 3) / 4; /* no. of new param slots needed */
assert(size > 0);
if (oldNum + sz4 > paramList->Size) {
/* Need to grow the parameter list array (alloc some extra) */
paramList->Size = paramList->Size + 4 * sz4;
/* realloc arrays */
paramList->Parameters = (struct gl_program_parameter *)
_mesa_realloc(paramList->Parameters,
oldNum * sizeof(struct gl_program_parameter),
paramList->Size * sizeof(struct gl_program_parameter));
paramList->ParameterValues = (GLfloat (*)[4])
_mesa_align_realloc(paramList->ParameterValues, /* old buf */
oldNum * 4 * sizeof(GLfloat), /* old size */
paramList->Size * 4 *sizeof(GLfloat), /* new sz */
16);
}
if (!paramList->Parameters ||
!paramList->ParameterValues) {
/* out of memory */
paramList->NumParameters = 0;
paramList->Size = 0;
return -1;
}
else {
GLuint i;
paramList->NumParameters = oldNum + sz4;
_mesa_memset(¶mList->Parameters[oldNum], 0,
sz4 * sizeof(struct gl_program_parameter));
for (i = 0; i < sz4; i++) {
struct gl_program_parameter *p = paramList->Parameters + oldNum + i;
p->Name = name ? _mesa_strdup(name) : NULL;
p->Type = type;
p->Size = size;
p->DataType = datatype;
if (values) {
COPY_4V(paramList->ParameterValues[oldNum + i], values);
values += 4;
}
else {
/* silence valgrind */
ASSIGN_4V(paramList->ParameterValues[oldNum + i], 0, 0, 0, 0);
}
size -= 4;
}
if (state) {
for (i = 0; i < STATE_LENGTH; i++)
paramList->Parameters[oldNum].StateIndexes[i] = state[i];
}
return (GLint) oldNum;
}
}