* Mesa 3-D graphics library
* Version: 7.9
*
+ * Copyright 2009 VMware, Inc. All Rights Reserved.
* Copyright (C) 2010 LunarG Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
+#include "util/u_sampler.h"
#include "vg_manager.h"
#include "vg_context.h"
-#include "vg_tracker.h" /* for st_resize_framebuffer */
#include "image.h"
+#include "mask.h"
+
+static struct pipe_resource *
+create_texture(struct pipe_context *pipe, enum pipe_format format,
+ VGint width, VGint height)
+{
+ struct pipe_resource templ;
+
+ memset(&templ, 0, sizeof(templ));
+
+ if (format != PIPE_FORMAT_NONE) {
+ templ.format = format;
+ }
+ else {
+ templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
+ }
+
+ templ.target = PIPE_TEXTURE_2D;
+ templ.width0 = width;
+ templ.height0 = height;
+ templ.depth0 = 1;
+ templ.last_level = 0;
+
+ if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
+ templ.bind = PIPE_BIND_DEPTH_STENCIL;
+ } else {
+ templ.bind = (PIPE_BIND_DISPLAY_TARGET |
+ PIPE_BIND_RENDER_TARGET |
+ PIPE_BIND_SAMPLER_VIEW);
+ }
+
+ return pipe->screen->resource_create(pipe->screen, &templ);
+}
+
+static struct pipe_sampler_view *
+create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
+ VGint width, VGint height)
+{
+ struct pipe_resource *texture;
+ struct pipe_sampler_view view_templ;
+ struct pipe_sampler_view *view;
+
+ texture = create_texture(pipe, format, width, height);
+
+ if (!texture)
+ return NULL;
+
+ u_sampler_view_default_template(&view_templ, texture, texture->format);
+ view = pipe->create_sampler_view(pipe, texture, &view_templ);
+ /* want the texture to go away if the view is freed */
+ pipe_resource_reference(&texture, NULL);
+
+ return view;
+}
+
+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_surface *surface = pipe->screen->get_tex_surface(
+ pipe->screen,
+ stfb->alpha_mask_view->texture,
+ 0, 0, 0,
+ PIPE_BIND_RENDER_TARGET |
+ PIPE_BIND_BLIT_DESTINATION);
+ struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
+ pipe->screen,
+ old_sampler_view->texture,
+ 0, 0, 0,
+ PIPE_BIND_BLIT_SOURCE);
+ pipe->surface_copy(pipe,
+ surface,
+ 0, 0,
+ old_surface,
+ 0, 0,
+ MIN2(old_surface->width, surface->width),
+ MIN2(old_surface->height, surface->height));
+ if (surface)
+ pipe_surface_reference(&surface, NULL);
+ if (old_surface)
+ pipe_surface_reference(&old_surface, NULL);
+ }
+
+ /* Free the old texture
+ */
+ if (old_sampler_view)
+ pipe_sampler_view_reference(&old_sampler_view, NULL);
+}
+
+static boolean
+vg_context_update_depth_stencil_rb(struct vg_context * ctx,
+ uint width, uint height)
+{
+ struct st_renderbuffer *dsrb = ctx->draw_buffer->dsrb;
+ struct pipe_context *pipe = ctx->pipe;
+ unsigned surface_usage;
+
+ if ((dsrb->width == width && dsrb->height == height) && dsrb->texture)
+ return FALSE;
+
+ /* unreference existing ones */
+ pipe_surface_reference(&dsrb->surface, NULL);
+ pipe_resource_reference(&dsrb->texture, NULL);
+ dsrb->width = dsrb->height = 0;
+
+ /* Probably need dedicated flags for surface usage too:
+ */
+ surface_usage = (PIPE_BIND_RENDER_TARGET |
+ PIPE_BIND_BLIT_SOURCE |
+ PIPE_BIND_BLIT_DESTINATION);
+
+ dsrb->texture = create_texture(pipe, dsrb->format, width, height);
+ if (!dsrb->texture)
+ return TRUE;
+
+ dsrb->surface = pipe->screen->get_tex_surface(pipe->screen,
+ dsrb->texture,
+ 0, 0, 0,
+ surface_usage);
+ if (!dsrb->surface) {
+ pipe_resource_reference(&dsrb->texture, NULL);
+ return TRUE;
+ }
+
+ dsrb->width = width;
+ dsrb->height = height;
+
+ assert(dsrb->surface->width == width);
+ assert(dsrb->surface->height == height);
+
+ return TRUE;
+}
+
+static boolean
+vg_context_update_color_rb(struct vg_context *ctx, struct pipe_resource *pt)
+{
+ struct st_renderbuffer *strb = ctx->draw_buffer->strb;
+ struct pipe_screen *screen = ctx->pipe->screen;
+
+ if (strb->texture == pt) {
+ pipe_resource_reference(&pt, NULL);
+ return FALSE;
+ }
+
+ /* unreference existing ones */
+ pipe_surface_reference(&strb->surface, NULL);
+ pipe_resource_reference(&strb->texture, NULL);
+ strb->width = strb->height = 0;
+
+ strb->texture = pt;
+ strb->surface = screen->get_tex_surface(screen, strb->texture, 0, 0, 0,
+ PIPE_BIND_RENDER_TARGET |
+ PIPE_BIND_BLIT_SOURCE |
+ PIPE_BIND_BLIT_DESTINATION);
+ if (!strb->surface) {
+ pipe_resource_reference(&strb->texture, NULL);
+ return TRUE;
+ }
+
+ strb->width = pt->width0;
+ strb->height = pt->height0;
+
+ return TRUE;
+}
+
+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);
+ }
+}
/**
* Flush the front buffer if the current context renders to the front buffer.
void
vg_manager_validate_framebuffer(struct vg_context *ctx)
{
- struct pipe_screen *screen = ctx->pipe->screen;
struct st_framebuffer *stfb = ctx->draw_buffer;
- struct st_renderbuffer *rb;
struct pipe_resource *pt;
/* no binding surface */
if (!stfb->iface->validate(stfb->iface, &stfb->strb_att, 1, &pt) || !pt)
return;
- rb = stfb->strb;
- if (rb->texture == pt) {
- pipe_resource_reference(&pt, NULL);
- return;
- }
-
- /* unreference existing ones */
- pipe_surface_reference(&rb->surface, NULL);
- pipe_resource_reference(&rb->texture, NULL);
-
- rb->texture = pt;
- rb->surface = screen->get_tex_surface(screen, rb->texture, 0, 0, 0,
- PIPE_BIND_RENDER_TARGET |
- PIPE_BIND_BLIT_SOURCE |
- PIPE_BIND_BLIT_DESTINATION);
-
- rb->width = rb->surface->width;
- rb->height = rb->surface->height;
-
- st_resize_framebuffer(stfb, rb->width, rb->height);
-
+ /*
+ * unset draw_buffer_invalid first because vg_context_update_draw_buffer
+ * will cause the framebuffer to be validated again because of a call to
+ * vg_validate_state
+ */
p_atomic_set(&ctx->draw_buffer_invalid, FALSE);
+ vg_context_update_draw_buffer(ctx, pt);
}
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