static void
vg_context_update_surface_mask_view(struct vg_context *ctx,
uint width, uint height)
{
struct st_framebuffer *stfb = ctx->draw_buffer;
struct pipe_sampler_view *old_sampler_view = stfb->surface_mask_view;
struct pipe_context *pipe = ctx->pipe;
if (old_sampler_view &&
old_sampler_view->texture->width0 == width &&
old_sampler_view->texture->height0 == height)
return;
/*
we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
this texture and use it as a sampler, so while this wastes some
space it makes both of those a lot simpler
*/
stfb->surface_mask_view = create_tex_and_view(pipe,
PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
if (!stfb->surface_mask_view) {
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
return;
}
/* XXX could this call be avoided? */
vg_validate_state(ctx);
/* alpha mask starts with 1.f alpha */
mask_fill(0, 0, width, height, 1.f);
/* if we had an old surface copy it over */
if (old_sampler_view) {
struct pipe_box src_box;
u_box_origin_2d(MIN2(old_sampler_view->texture->width0,
stfb->surface_mask_view->texture->width0),
MIN2(old_sampler_view->texture->height0,
stfb->surface_mask_view->texture->height0),
&src_box);
pipe->resource_copy_region(pipe,
stfb->surface_mask_view->texture,
0, 0, 0, 0,
old_sampler_view->texture,
0, &src_box);
}
/* Free the old texture
*/
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
}
static void
setup_new_alpha_mask(struct vg_context *ctx, struct st_framebuffer *stfb)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_sampler_view *old_sampler_view = stfb->alpha_mask_view;
/*
we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
this texture and use it as a sampler, so while this wastes some
space it makes both of those a lot simpler
*/
stfb->alpha_mask_view = create_tex_and_view(pipe,
PIPE_FORMAT_B8G8R8A8_UNORM, stfb->width, stfb->height);
if (!stfb->alpha_mask_view) {
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
return;
}
/* XXX could this call be avoided? */
vg_validate_state(ctx);
/* alpha mask starts with 1.f alpha */
mask_fill(0, 0, stfb->width, stfb->height, 1.f);
/* if we had an old surface copy it over */
if (old_sampler_view) {
struct pipe_subresource subsurf, subold_surf;
subsurf.face = 0;
subsurf.level = 0;
subold_surf.face = 0;
subold_surf.level = 0;
pipe->resource_copy_region(pipe,
stfb->alpha_mask_view->texture,
subsurf,
0, 0, 0,
old_sampler_view->texture,
subold_surf,
0, 0, 0,
MIN2(old_sampler_view->texture->width0,
stfb->alpha_mask_view->texture->width0),
MIN2(old_sampler_view->texture->height0,
stfb->alpha_mask_view->texture->height0));
}
/* Free the old texture
*/
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
}
static void
vg_context_update_blend_texture_view(struct vg_context *ctx,
uint width, uint height)
{
struct pipe_context *pipe = ctx->pipe;
struct st_framebuffer *stfb = ctx->draw_buffer;
struct pipe_sampler_view *old = stfb->blend_texture_view;
if (old &&
old->texture->width0 == width &&
old->texture->height0 == height)
return;
stfb->blend_texture_view = create_tex_and_view(pipe,
PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
pipe_sampler_view_reference(&old, NULL);
}
static void
vg_context_update_draw_buffer(struct vg_context *ctx, struct pipe_resource *pt)
{
struct st_framebuffer *stfb = ctx->draw_buffer;
boolean new_cbuf, new_zsbuf, new_size;
new_cbuf = vg_context_update_color_rb(ctx, pt);
new_zsbuf =
vg_context_update_depth_stencil_rb(ctx, pt->width0, pt->height0);
new_size = (stfb->width != pt->width0 || stfb->height != pt->height0);
stfb->width = pt->width0;
stfb->height = pt->height0;
if (new_cbuf || new_zsbuf || new_size) {
struct pipe_framebuffer_state *state = &ctx->state.g3d.fb;
memset(state, 0, sizeof(struct pipe_framebuffer_state));
state->width = stfb->width;
state->height = stfb->height;
state->nr_cbufs = 1;
state->cbufs[0] = stfb->strb->surface;
state->zsbuf = stfb->dsrb->surface;
cso_set_framebuffer(ctx->cso_context, state);
}
if (new_zsbuf || new_size) {
ctx->state.dirty |= VIEWPORT_DIRTY;
ctx->state.dirty |= DEPTH_STENCIL_DIRTY;/*to reset the scissors*/
ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_DEPTHSTENCIL, NULL, 0.0, 0);
/* we need all the other state already set */
setup_new_alpha_mask(ctx, stfb);
pipe_sampler_view_reference( &stfb->blend_texture_view, NULL);
stfb->blend_texture_view = create_tex_and_view(ctx->pipe,
PIPE_FORMAT_B8G8R8A8_UNORM, stfb->width, stfb->height);
}
}