static void update_array(struct st_context *st)
{
struct gl_context *ctx = st->ctx;
const struct gl_client_array **arrays = ctx->Array._DrawArrays;
const struct st_vertex_program *vp;
const struct st_vp_variant *vpv;
struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS];
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
unsigned num_vbuffers, num_velements;
st->vertex_array_out_of_memory = FALSE;
/* No drawing has been done yet, so do nothing. */
if (!arrays)
return;
/* vertex program validation must be done before this */
vp = st->vp;
vpv = st->vp_variant;
memset(velements, 0, sizeof(struct pipe_vertex_element) * vpv->num_inputs);
/*
* Setup the vbuffer[] and velements[] arrays.
*/
if (is_interleaved_arrays(vp, vpv, arrays)) {
if (!setup_interleaved_attribs(vp, vpv, arrays, vbuffer, velements)) {
st->vertex_array_out_of_memory = TRUE;
return;
}
num_vbuffers = 1;
num_velements = vpv->num_inputs;
if (num_velements == 0)
num_vbuffers = 0;
}
else {
if (!setup_non_interleaved_attribs(st, vp, vpv, arrays, vbuffer,
velements)) {
st->vertex_array_out_of_memory = TRUE;
return;
}
num_vbuffers = vpv->num_inputs;
num_velements = vpv->num_inputs;
}
cso_set_vertex_buffers(st->cso_context, 0, num_vbuffers, vbuffer);
if (st->last_num_vbuffers > num_vbuffers) {
/* Unbind remaining buffers, if any. */
cso_set_vertex_buffers(st->cso_context, num_vbuffers,
st->last_num_vbuffers - num_vbuffers, NULL);
}
st->last_num_vbuffers = num_vbuffers;
cso_set_vertex_elements(st->cso_context, num_velements, velements);
}
/**
* Setup vertex arrays and buffers prior to drawing.
* \return GL_TRUE for success, GL_FALSE otherwise (probably out of memory)
*/
static GLboolean
st_validate_varrays(struct gl_context *ctx,
const struct gl_client_array **arrays)
{
struct st_context *st = st_context(ctx);
const struct st_vertex_program *vp;
const struct st_vp_variant *vpv;
struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS];
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
unsigned num_vbuffers, num_velements;
/* must get these after state validation! */
vp = st->vp;
vpv = st->vp_variant;
memset(velements, 0, sizeof(struct pipe_vertex_element) * vpv->num_inputs);
/*
* Setup the vbuffer[] and velements[] arrays.
*/
if (is_interleaved_arrays(vp, vpv, arrays)) {
if (!setup_interleaved_attribs(ctx, vp, vpv, arrays, vbuffer,
velements)) {
return GL_FALSE;
}
num_vbuffers = 1;
num_velements = vpv->num_inputs;
if (num_velements == 0)
num_vbuffers = 0;
}
else {
if (!setup_non_interleaved_attribs(ctx, vp, vpv, arrays,
vbuffer, velements)) {
return GL_FALSE;
}
num_vbuffers = vpv->num_inputs;
num_velements = vpv->num_inputs;
}
cso_set_vertex_buffers(st->cso_context, num_vbuffers, vbuffer);
cso_set_vertex_elements(st->cso_context, num_velements, velements);
return GL_TRUE;
}