void st_resize_framebuffer(struct st_framebuffer *stfb,
uint width, uint height)
{
struct vg_context *ctx = vg_current_context();
struct st_renderbuffer *strb = stfb->strb;
struct pipe_framebuffer_state *state;
if (!ctx)
return;
state = &ctx->state.g3d.fb;
/* If this is a noop, exit early and don't do the clear, etc below.
*/
if (strb->width == width &&
strb->height == height &&
state->zsbuf)
return;
if (strb->width != width || strb->height != height)
st_renderbuffer_alloc_storage(ctx, strb,
width, height);
if (stfb->dsrb->width != width || stfb->dsrb->height != height)
st_renderbuffer_alloc_storage(ctx, stfb->dsrb,
width, height);
{
VGuint i;
memset(state, 0, sizeof(struct pipe_framebuffer_state));
state->width = width;
state->height = height;
state->nr_cbufs = 1;
state->cbufs[0] = strb->surface;
for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
state->cbufs[i] = 0;
state->zsbuf = stfb->dsrb->surface;
cso_set_framebuffer(ctx->cso_context, state);
}
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, width, height);
pipe_texture_reference( &stfb->blend_texture, NULL );
stfb->blend_texture = create_texture(ctx->pipe, PIPE_FORMAT_A8R8G8B8_UNORM,
width, height);
}
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);
}
}
