static void *
ilo_create_vertex_elements_state(struct pipe_context *pipe,
unsigned num_elements,
const struct pipe_vertex_element *elements)
{
const struct ilo_dev_info *dev = ilo_context(pipe)->dev;
struct ilo_ve_state *ve;
ve = MALLOC_STRUCT(ilo_ve_state);
assert(ve);
ilo_gpe_init_ve(dev, num_elements, elements, ve);
return ve;
}
/**
* Set the states that are invariant between all ops.
*/
static bool
ilo_blitter_set_invariants(struct ilo_blitter *blitter)
{
struct pipe_vertex_element velem;
struct pipe_viewport_state vp;
if (blitter->initialized)
return true;
/* only vertex X and Y */
memset(&velem, 0, sizeof(velem));
velem.src_format = PIPE_FORMAT_R32G32_FLOAT;
ilo_gpe_init_ve(blitter->ilo->dev, 1, &velem, &blitter->ve);
/* generate VUE header */
ilo_gpe_init_ve_nosrc(blitter->ilo->dev,
GEN6_VFCOMP_STORE_0, /* Reserved */
GEN6_VFCOMP_STORE_0, /* Render Target Array Index */
GEN6_VFCOMP_STORE_0, /* Viewport Index */
GEN6_VFCOMP_STORE_0, /* Point Width */
&blitter->ve.nosrc_cso);
blitter->ve.prepend_nosrc_cso = true;
/* a rectangle has 3 vertices in a RECTLIST */
util_draw_init_info(&blitter->draw);
blitter->draw.mode = ILO_PRIM_RECTANGLES;
blitter->draw.count = 3;
/**
* From the Haswell PRM, volume 7, page 615:
*
* "The clear value must be between the min and max depth values
* (inclusive) defined in the CC_VIEWPORT."
*
* Even though clipping and viewport transformation will be disabled, we
* still need to set up the viewport states.
*/
memset(&vp, 0, sizeof(vp));
vp.scale[0] = 1.0f;
vp.scale[1] = 1.0f;
vp.scale[2] = 1.0f;
ilo_gpe_set_viewport_cso(blitter->ilo->dev, &vp, &blitter->viewport);
blitter->initialized = true;
return true;
}