--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.9
+ *
+ * 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
+ * BRIAN PAUL 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 "util/u_memory.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_debug.h"
+#include "state_tracker/drm_api.h"
+#include "state_tracker/st_manager.h" /* for st_manager_create_api */
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_drawable.h"
+#include "dri_st_api.h"
+#include "dri1.h"
+
+static struct {
+ int32_t refcnt;
+ struct st_api *stapi;
+} dri_st_api;
+
+/**
+ * Get the format of an attachment.
+ */
+static INLINE enum pipe_format
+dri_drawable_get_format(struct dri_drawable *drawable,
+ enum st_attachment_type statt)
+{
+ enum pipe_format format;
+
+ switch (statt) {
+ case ST_ATTACHMENT_FRONT_LEFT:
+ case ST_ATTACHMENT_BACK_LEFT:
+ case ST_ATTACHMENT_FRONT_RIGHT:
+ case ST_ATTACHMENT_BACK_RIGHT:
+ format = drawable->stvis.color_format;
+ break;
+ case ST_ATTACHMENT_DEPTH_STENCIL:
+ format = drawable->stvis.depth_stencil_format;
+ break;
+ default:
+ format = PIPE_FORMAT_NONE;
+ break;
+ }
+
+ return format;
+}
+
+/**
+ * Process __DRIbuffer and convert them into pipe_textures.
+ */
+static void
+dri_drawable_process_buffers(struct dri_drawable *drawable,
+ __DRIbuffer *buffers, unsigned count)
+{
+ struct dri_screen *screen = dri_screen(drawable->sPriv);
+ __DRIdrawable *dri_drawable = drawable->dPriv;
+ struct pipe_texture templ;
+ struct winsys_handle whandle;
+ boolean have_depth = FALSE;
+ unsigned i;
+
+ if (drawable->old_num == count &&
+ drawable->old_w == dri_drawable->w &&
+ drawable->old_h == dri_drawable->h &&
+ memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
+ return;
+
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
+ pipe_texture_reference(&drawable->textures[i], NULL);
+
+ memset(&templ, 0, sizeof(templ));
+ templ.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
+ templ.target = PIPE_TEXTURE_2D;
+ templ.last_level = 0;
+ templ.width0 = dri_drawable->w;
+ templ.height0 = dri_drawable->h;
+ templ.depth0 = 1;
+
+ memset(&whandle, 0, sizeof(whandle));
+
+ for (i = 0; i < count; i++) {
+ __DRIbuffer *buf = &buffers[i];
+ enum st_attachment_type statt;
+ enum pipe_format format;
+
+ switch (buf->attachment) {
+ case __DRI_BUFFER_FRONT_LEFT:
+ if (!screen->auto_fake_front) {
+ statt = ST_ATTACHMENT_INVALID;
+ break;
+ }
+ /* fallthrough */
+ case __DRI_BUFFER_FAKE_FRONT_LEFT:
+ statt = ST_ATTACHMENT_FRONT_LEFT;
+ break;
+ case __DRI_BUFFER_BACK_LEFT:
+ statt = ST_ATTACHMENT_BACK_LEFT;
+ break;
+ case __DRI_BUFFER_DEPTH:
+ case __DRI_BUFFER_DEPTH_STENCIL:
+ case __DRI_BUFFER_STENCIL:
+ statt = ST_ATTACHMENT_DEPTH_STENCIL;
+ /* use only the first depth/stencil buffer */
+ if (have_depth)
+ statt = ST_ATTACHMENT_INVALID;
+ else
+ have_depth = TRUE;
+ break;
+ default:
+ statt = ST_ATTACHMENT_INVALID;
+ break;
+ }
+
+ format = dri_drawable_get_format(drawable, statt);
+ if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
+ continue;
+
+ templ.format = format;
+ whandle.handle = buf->name;
+ whandle.stride = buf->pitch;
+
+ drawable->textures[statt] =
+ screen->pipe_screen->texture_from_handle(screen->pipe_screen,
+ &templ, &whandle);
+ }
+
+ drawable->old_num = count;
+ drawable->old_w = dri_drawable->w;
+ drawable->old_h = dri_drawable->h;
+ memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
+}
+
+/**
+ * Retrieve __DRIbuffer from the DRI loader.
+ */
+static __DRIbuffer *
+dri_drawable_get_buffers(struct dri_drawable *drawable,
+ const enum st_attachment_type *statts,
+ unsigned *count)
+{
+ __DRIdrawable *dri_drawable = drawable->dPriv;
+ struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
+ boolean with_format;
+ __DRIbuffer *buffers;
+ int num_buffers;
+ unsigned attachments[8];
+ unsigned num_attachments, i;
+
+ assert(loader);
+ with_format = (loader->base.version > 2 && loader->getBuffersWithFormat);
+
+ num_attachments = 0;
+ for (i = 0; i < *count; i++) {
+ enum pipe_format format;
+ int att;
+
+ format = dri_drawable_get_format(drawable, statts[i]);
+ if (format == PIPE_FORMAT_NONE)
+ continue;
+
+ switch (statts[i]) {
+ case ST_ATTACHMENT_FRONT_LEFT:
+ att = __DRI_BUFFER_FRONT_LEFT;
+ break;
+ case ST_ATTACHMENT_BACK_LEFT:
+ att = __DRI_BUFFER_BACK_LEFT;
+ break;
+ case ST_ATTACHMENT_FRONT_RIGHT:
+ att = __DRI_BUFFER_FRONT_RIGHT;
+ break;
+ case ST_ATTACHMENT_BACK_RIGHT:
+ att = __DRI_BUFFER_BACK_RIGHT;
+ break;
+ case ST_ATTACHMENT_DEPTH_STENCIL:
+ att = __DRI_BUFFER_DEPTH_STENCIL;
+ break;
+ default:
+ att = -1;
+ break;
+ }
+
+ if (att >= 0) {
+ attachments[num_attachments++] = att;
+ if (with_format) {
+ attachments[num_attachments++] =
+ util_format_get_blocksizebits(format);
+ }
+ }
+ }
+
+ if (with_format) {
+ num_attachments /= 2;
+ buffers = loader->getBuffersWithFormat(dri_drawable,
+ &dri_drawable->w, &dri_drawable->h,
+ attachments, num_attachments,
+ &num_buffers, dri_drawable->loaderPrivate);
+ }
+ else {
+ buffers = loader->getBuffers(dri_drawable,
+ &dri_drawable->w, &dri_drawable->h,
+ attachments, num_attachments,
+ &num_buffers, dri_drawable->loaderPrivate);
+ }
+
+ if (buffers) {
+ /* set one cliprect to cover the whole dri_drawable */
+ dri_drawable->x = 0;
+ dri_drawable->y = 0;
+ dri_drawable->backX = 0;
+ dri_drawable->backY = 0;
+ dri_drawable->numClipRects = 1;
+ dri_drawable->pClipRects[0].x1 = 0;
+ dri_drawable->pClipRects[0].y1 = 0;
+ dri_drawable->pClipRects[0].x2 = dri_drawable->w;
+ dri_drawable->pClipRects[0].y2 = dri_drawable->h;
+ dri_drawable->numBackClipRects = 1;
+ dri_drawable->pBackClipRects[0].x1 = 0;
+ dri_drawable->pBackClipRects[0].y1 = 0;
+ dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
+ dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
+
+ *count = num_buffers;
+ }
+
+ return buffers;
+}
+
+static boolean
+dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
+ const enum st_attachment_type *statts,
+ unsigned count,
+ struct pipe_texture **out)
+{
+ struct dri_drawable *drawable =
+ (struct dri_drawable *) stfbi->st_manager_private;
+ unsigned statt_mask, i;
+
+ statt_mask = 0x0;
+ for (i = 0; i < count; i++)
+ statt_mask |= (1 << statts[i]);
+
+ /*
+ * dPriv->pStamp is the server stamp. It should be accessed with a lock, at
+ * least for DRI1. dPriv->lastStamp is the client stamp. It has the value
+ * of the server stamp when last checked.
+ *
+ * This function updates the textures and records the stamp of the textures.
+ */
+ if (drawable->texture_stamp != drawable->dPriv->lastStamp ||
+ (statt_mask & ~drawable->texture_mask)) {
+ if (__dri1_api_hooks) {
+ /* TODO */
+ return FALSE;
+ }
+ else {
+ __DRIbuffer *buffers;
+ unsigned num_buffers = count;
+
+ buffers = dri_drawable_get_buffers(drawable, statts, &num_buffers);
+ dri_drawable_process_buffers(drawable, buffers, num_buffers);
+ }
+
+ drawable->texture_stamp = drawable->dPriv->lastStamp;
+ drawable->texture_mask = statt_mask;
+ }
+
+ if (!out)
+ return TRUE;
+
+ for (i = 0; i < count; i++) {
+ out[i] = NULL;
+ pipe_texture_reference(&out[i], drawable->textures[statts[i]]);
+ }
+
+ return TRUE;
+}
+
+static boolean
+dri_st_framebuffer_flush_front(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type statt)
+{
+ struct dri_drawable *drawable =
+ (struct dri_drawable *) stfbi->st_manager_private;
+ struct __DRIdri2LoaderExtensionRec *loader =
+ drawable->sPriv->dri2.loader;
+
+ /* TODO */
+ if (__dri1_api_hooks)
+ return FALSE;
+
+ if (statt == ST_ATTACHMENT_FRONT_LEFT && loader->flushFrontBuffer) {
+ loader->flushFrontBuffer(drawable->dPriv,
+ drawable->dPriv->loaderPrivate);
+ }
+
+ return TRUE;
+}
+
+/**
+ * Create a framebuffer from the given drawable.
+ */
+struct st_framebuffer_iface *
+dri_create_st_framebuffer(struct dri_drawable *drawable)
+{
+ struct st_framebuffer_iface *stfbi;
+
+ stfbi = CALLOC_STRUCT(st_framebuffer_iface);
+ if (stfbi) {
+ stfbi->visual = &drawable->stvis;
+ stfbi->flush_front = dri_st_framebuffer_flush_front;
+ stfbi->validate = dri_st_framebuffer_validate;
+ stfbi->st_manager_private = (void *) drawable;
+ }
+
+ return stfbi;
+}
+
+/**
+ * Destroy a framebuffer.
+ */
+void
+dri_destroy_st_framebuffer(struct st_framebuffer_iface *stfbi)
+{
+ FREE(stfbi);
+}
+
+/**
+ * Return the texture at an attachment. Allocate the texture if it does not
+ * exist.
+ */
+struct pipe_texture *
+dri_get_st_framebuffer_texture(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type statt)
+{
+ struct dri_drawable *drawable =
+ (struct dri_drawable *) stfbi->st_manager_private;
+
+ if (!(drawable->texture_mask & (1 << statt))) {
+ enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
+ unsigned i, count = 0;
+
+ /* make sure DRI2 does not destroy existing buffers */
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+ if (drawable->texture_mask & (1 << i)) {
+ statts[count++] = i;
+ }
+ }
+ statts[count++] = statt;
+
+ drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
+ dri_st_framebuffer_validate(stfbi, statts, count, NULL);
+ }
+
+ return drawable->textures[statt];
+}
+
+/**
+ * Add a reference to the st_api of the state tracker.
+ */
+static void
+_dri_get_st_api(void)
+{
+ p_atomic_inc(&dri_st_api.refcnt);
+ if (p_atomic_read(&dri_st_api.refcnt) == 1)
+ dri_st_api.stapi = st_manager_create_api();
+}
+
+/**
+ * Remove a reference to the st_api of the state tracker.
+ */
+static void
+_dri_put_st_api(void)
+{
+ struct st_api *stapi = dri_st_api.stapi;
+
+ if (p_atomic_dec_zero(&dri_st_api.refcnt)) {
+ stapi->destroy(dri_st_api.stapi);
+ dri_st_api.stapi = NULL;
+ }
+}
+
+/**
+ * Create a state tracker manager from the given screen.
+ */
+struct st_manager *
+dri_create_st_manager(struct dri_screen *screen)
+{
+ struct st_manager *smapi;
+
+ smapi = CALLOC_STRUCT(st_manager);
+ if (smapi) {
+ smapi->screen = screen->pipe_screen;
+ _dri_get_st_api();
+ }
+
+ return smapi;
+}
+
+/**
+ * Destroy a state tracker manager.
+ */
+void
+dri_destroy_st_manager(struct st_manager *smapi)
+{
+ _dri_put_st_api();
+ FREE(smapi);
+}
+
+/**
+ * Return the st_api of OpenGL state tracker.
+ */
+struct st_api *
+dri_get_st_api(void)
+{
+ assert(dri_st_api.stapi);
+ return dri_st_api.stapi;
+}
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