+++ /dev/null
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2010 LunarG Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Chia-I Wu <olv@lunarg.com>
- */
-
-#include "xm_api.h"
-#include "xm_st.h"
-
-#include "util/u_inlines.h"
-#include "util/u_atomic.h"
-#include "util/u_memory.h"
-
-struct xmesa_st_framebuffer {
- XMesaDisplay display;
- XMesaBuffer buffer;
- struct pipe_screen *screen;
-
- struct st_visual stvis;
- enum pipe_texture_target target;
-
- unsigned texture_width, texture_height, texture_mask;
- struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
-
- struct pipe_resource *display_resource;
-};
-
-
-static inline struct xmesa_st_framebuffer *
-xmesa_st_framebuffer(struct st_framebuffer_iface *stfbi)
-{
- return (struct xmesa_st_framebuffer *) stfbi->st_manager_private;
-}
-
-
-/**
- * Display (present) an attachment to the xlib_drawable of the framebuffer.
- */
-static bool
-xmesa_st_framebuffer_display(struct st_framebuffer_iface *stfbi,
- enum st_attachment_type statt)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- struct pipe_resource *ptex = xstfb->textures[statt];
- struct pipe_resource *pres;
-
- if (!ptex)
- return true;
-
- pres = xstfb->display_resource;
- /* (re)allocate the surface for the texture to be displayed */
- if (!pres || pres != ptex) {
- pipe_resource_reference(&xstfb->display_resource, ptex);
- pres = xstfb->display_resource;
- }
-
- xstfb->screen->flush_frontbuffer(xstfb->screen, pres, 0, 0, &xstfb->buffer->ws, NULL);
- return true;
-}
-
-
-/**
- * Copy the contents between the attachments.
- */
-static void
-xmesa_st_framebuffer_copy_textures(struct st_framebuffer_iface *stfbi,
- enum st_attachment_type src_statt,
- enum st_attachment_type dst_statt,
- unsigned x, unsigned y,
- unsigned width, unsigned height)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- struct pipe_resource *src_ptex = xstfb->textures[src_statt];
- struct pipe_resource *dst_ptex = xstfb->textures[dst_statt];
- struct pipe_box src_box;
- struct pipe_context *pipe;
-
- if (!src_ptex || !dst_ptex)
- return;
-
- pipe = xmesa_get_context(stfbi);
-
- u_box_2d(x, y, width, height, &src_box);
-
- if (src_ptex && dst_ptex)
- pipe->resource_copy_region(pipe, dst_ptex, 0, x, y, 0,
- src_ptex, 0, &src_box);
-}
-
-
-/**
- * Remove outdated textures and create the requested ones.
- * This is a helper used during framebuffer validation.
- */
-bool
-xmesa_st_framebuffer_validate_textures(struct st_framebuffer_iface *stfbi,
- unsigned width, unsigned height,
- unsigned mask)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- struct pipe_resource templ;
- enum st_attachment_type i;
-
- /* remove outdated textures */
- if (xstfb->texture_width != width || xstfb->texture_height != height) {
- for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
- pipe_resource_reference(&xstfb->textures[i], NULL);
- }
-
- memset(&templ, 0, sizeof(templ));
- templ.target = xstfb->target;
- templ.width0 = width;
- templ.height0 = height;
- templ.depth0 = 1;
- templ.array_size = 1;
- templ.last_level = 0;
- templ.nr_samples = xstfb->stvis.samples;
- templ.nr_storage_samples = xstfb->stvis.samples;
-
- for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
- enum pipe_format format;
- unsigned bind;
-
- /* the texture already exists or not requested */
- if (xstfb->textures[i] || !(mask & (1 << i))) {
- /* remember the texture */
- if (xstfb->textures[i])
- mask |= (1 << i);
- continue;
- }
-
- switch (i) {
- case ST_ATTACHMENT_FRONT_LEFT:
- case ST_ATTACHMENT_BACK_LEFT:
- case ST_ATTACHMENT_FRONT_RIGHT:
- case ST_ATTACHMENT_BACK_RIGHT:
- format = xstfb->stvis.color_format;
- bind = PIPE_BIND_DISPLAY_TARGET |
- PIPE_BIND_RENDER_TARGET;
- break;
- case ST_ATTACHMENT_DEPTH_STENCIL:
- format = xstfb->stvis.depth_stencil_format;
- bind = PIPE_BIND_DEPTH_STENCIL;
- break;
- default:
- format = PIPE_FORMAT_NONE;
- break;
- }
-
- if (format != PIPE_FORMAT_NONE) {
- templ.format = format;
- templ.bind = bind;
-
- xstfb->textures[i] =
- xstfb->screen->resource_create(xstfb->screen, &templ);
- if (!xstfb->textures[i])
- return FALSE;
- }
- }
-
- xstfb->texture_width = width;
- xstfb->texture_height = height;
- xstfb->texture_mask = mask;
-
- return true;
-}
-
-
-/**
- * Check that a framebuffer's attachments match the window's size.
- *
- * Called via st_framebuffer_iface::validate()
- *
- * \param statts array of framebuffer attachments
- * \param count number of framebuffer attachments in statts[]
- * \param out returns resources for each of the attachments
- */
-static bool
-xmesa_st_framebuffer_validate(struct st_context_iface *stctx,
- struct st_framebuffer_iface *stfbi,
- const enum st_attachment_type *statts,
- unsigned count,
- struct pipe_resource **out)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- unsigned statt_mask, new_mask, i;
- bool resized;
- bool ret;
-
- /* build mask of ST_ATTACHMENT bits */
- statt_mask = 0x0;
- for (i = 0; i < count; i++)
- statt_mask |= 1 << statts[i];
-
- /* record newly allocated textures */
- new_mask = statt_mask & ~xstfb->texture_mask;
-
- /* If xmesa_strict_invalidate is not set, we will not yet have
- * called XGetGeometry(). Do so here:
- */
- if (!xmesa_strict_invalidate)
- xmesa_check_buffer_size(xstfb->buffer);
-
- resized = (xstfb->buffer->width != xstfb->texture_width ||
- xstfb->buffer->height != xstfb->texture_height);
-
- /* revalidate textures */
- if (resized || new_mask) {
- ret = xmesa_st_framebuffer_validate_textures(stfbi,
- xstfb->buffer->width, xstfb->buffer->height, statt_mask);
- if (!ret)
- return ret;
-
- if (!resized) {
- enum st_attachment_type back, front;
-
- back = ST_ATTACHMENT_BACK_LEFT;
- front = ST_ATTACHMENT_FRONT_LEFT;
- /* copy the contents if front is newly allocated and back is not */
- if ((statt_mask & (1 << back)) &&
- (new_mask & (1 << front)) &&
- !(new_mask & (1 << back))) {
- xmesa_st_framebuffer_copy_textures(stfbi, back, front,
- 0, 0, xstfb->texture_width, xstfb->texture_height);
- }
- }
- }
-
- for (i = 0; i < count; i++)
- pipe_resource_reference(&out[i], xstfb->textures[statts[i]]);
-
- return true;
-}
-
-
-/**
- * Called via st_framebuffer_iface::flush_front()
- */
-static bool
-xmesa_st_framebuffer_flush_front(struct st_context_iface *stctx,
- struct st_framebuffer_iface *stfbi,
- enum st_attachment_type statt)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- bool ret;
-
- ret = xmesa_st_framebuffer_display(stfbi, statt);
-
- if (ret && xmesa_strict_invalidate)
- xmesa_check_buffer_size(xstfb->buffer);
-
- return ret;
-}
-
-static uint32_t xmesa_stfbi_ID = 0;
-
-struct st_framebuffer_iface *
-xmesa_create_st_framebuffer(XMesaDisplay xmdpy, XMesaBuffer b)
-{
- struct st_framebuffer_iface *stfbi;
- struct xmesa_st_framebuffer *xstfb;
-
- assert(xmdpy->display == b->xm_visual->display);
-
- stfbi = CALLOC_STRUCT(st_framebuffer_iface);
- xstfb = CALLOC_STRUCT(xmesa_st_framebuffer);
- if (!stfbi || !xstfb) {
- free(stfbi);
- free(xstfb);
- return NULL;
- }
-
- xstfb->display = xmdpy;
- xstfb->buffer = b;
- xstfb->screen = xmdpy->screen;
- xstfb->stvis = b->xm_visual->stvis;
- if (xstfb->screen->get_param(xstfb->screen, PIPE_CAP_NPOT_TEXTURES))
- xstfb->target = PIPE_TEXTURE_2D;
- else
- xstfb->target = PIPE_TEXTURE_RECT;
-
- stfbi->visual = &xstfb->stvis;
- stfbi->flush_front = xmesa_st_framebuffer_flush_front;
- stfbi->validate = xmesa_st_framebuffer_validate;
- stfbi->ID = p_atomic_inc_return(&xmesa_stfbi_ID);
- stfbi->state_manager = xmdpy->smapi;
- p_atomic_set(&stfbi->stamp, 1);
- stfbi->st_manager_private = (void *) xstfb;
-
- return stfbi;
-}
-
-
-void
-xmesa_destroy_st_framebuffer(struct st_framebuffer_iface *stfbi)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- int i;
-
- pipe_resource_reference(&xstfb->display_resource, NULL);
-
- for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
- pipe_resource_reference(&xstfb->textures[i], NULL);
-
- free(xstfb);
- free(stfbi);
-}
-
-
-/**
- * Return the pipe_surface which corresponds to the given
- * framebuffer attachment.
- */
-struct pipe_resource *
-xmesa_get_framebuffer_resource(struct st_framebuffer_iface *stfbi,
- enum st_attachment_type att)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- return xstfb->textures[att];
-}
-
-
-void
-xmesa_swap_st_framebuffer(struct st_framebuffer_iface *stfbi)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- bool ret;
-
- ret = xmesa_st_framebuffer_display(stfbi, ST_ATTACHMENT_BACK_LEFT);
- if (ret) {
- struct pipe_resource **front, **back, *tmp;
-
- front = &xstfb->textures[ST_ATTACHMENT_FRONT_LEFT];
- back = &xstfb->textures[ST_ATTACHMENT_BACK_LEFT];
- /* swap textures only if the front texture has been allocated */
- if (*front) {
- tmp = *front;
- *front = *back;
- *back = tmp;
-
- /* the current context should validate the buffer after swapping */
- if (!xmesa_strict_invalidate)
- xmesa_notify_invalid_buffer(xstfb->buffer);
- }
-
- if (xmesa_strict_invalidate)
- xmesa_check_buffer_size(xstfb->buffer);
- }
-}
-
-
-void
-xmesa_copy_st_framebuffer(struct st_framebuffer_iface *stfbi,
- enum st_attachment_type src,
- enum st_attachment_type dst,
- int x, int y, int w, int h)
-{
- xmesa_st_framebuffer_copy_textures(stfbi, src, dst, x, y, w, h);
- if (dst == ST_ATTACHMENT_FRONT_LEFT)
- xmesa_st_framebuffer_display(stfbi, dst);
-}
-
-
-struct pipe_resource*
-xmesa_get_attachment(struct st_framebuffer_iface *stfbi,
- enum st_attachment_type st_attachment)
-{
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
- struct pipe_resource *res;
-
- res = xstfb->textures[st_attachment];
- return res;
-}
-
-
-struct pipe_context*
-xmesa_get_context(struct st_framebuffer_iface *stfbi)
-{
- struct pipe_context *pipe;
- struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
-
- pipe = xstfb->display->pipe;
- if (!pipe) {
- pipe = xstfb->screen->context_create(xstfb->screen, NULL, 0);
- if (!pipe)
- return NULL;
- xstfb->display->pipe = pipe;
- }
- return pipe;
-}
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