Duplicate state_tracker/dri/sw/dri_drawable.c

We need this for the upcoming fix for sw texture_from_pixmap.
Signed-off-by: Stuart Abercrombie <sabercrombie@chromium.org>
Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>

src/gallium/state_trackers/dri/sw/dri_drawable.c

-../common/dri_drawable.c
\ No newline at end of file

src/gallium/state_trackers/dri/sw/dri_drawable.c

+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_drawable.h"
+
+#include "pipe/p_screen.h"
+#include "util/u_format.h"
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+ 
+
+static boolean
+dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
+                            const enum st_attachment_type *statts,
+                            unsigned count,
+                            struct pipe_resource **out)
+{
+   struct dri_drawable *drawable =
+      (struct dri_drawable *) stfbi->st_manager_private;
+   struct dri_screen *screen = dri_screen(drawable->sPriv);
+   unsigned statt_mask, new_mask;
+   boolean new_stamp;
+   int i;
+
+   statt_mask = 0x0;
+   for (i = 0; i < count; i++)
+      statt_mask |= (1 << statts[i]);
+
+   /* record newly allocated textures */
+   new_mask = (statt_mask & ~drawable->texture_mask);
+
+   /*
+    * 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.
+    */
+   new_stamp = (drawable->texture_stamp != drawable->dPriv->lastStamp);
+
+   if (new_stamp || new_mask || screen->broken_invalidate) {
+      if (new_stamp && drawable->update_drawable_info)
+         drawable->update_drawable_info(drawable);
+
+      drawable->allocate_textures(drawable, statts, count);
+
+      /* add existing textures */
+      for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+         if (drawable->textures[i])
+            statt_mask |= (1 << i);
+      }
+
+      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_resource_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;
+
+   /* XXX remove this and just set the correct one on the framebuffer */
+   drawable->flush_frontbuffer(drawable, statt);
+
+   return TRUE;
+}
+
+/**
+ * This is called when we need to set up GL rendering to a new X window.
+ */
+boolean
+dri_create_buffer(__DRIscreen * sPriv,
+		  __DRIdrawable * dPriv,
+		  const struct gl_config * visual, boolean isPixmap)
+{
+   struct dri_screen *screen = sPriv->private;
+   struct dri_drawable *drawable = NULL;
+
+   if (isPixmap)
+      goto fail;		       /* not implemented */
+
+   drawable = CALLOC_STRUCT(dri_drawable);
+   if (drawable == NULL)
+      goto fail;
+
+   dri_fill_st_visual(&drawable->stvis, screen, visual);
+
+   /* setup the st_framebuffer_iface */
+   drawable->base.visual = &drawable->stvis;
+   drawable->base.flush_front = dri_st_framebuffer_flush_front;
+   drawable->base.validate = dri_st_framebuffer_validate;
+   drawable->base.st_manager_private = (void *) drawable;
+
+   drawable->screen = screen;
+   drawable->sPriv = sPriv;
+   drawable->dPriv = dPriv;
+   dPriv->driverPrivate = (void *)drawable;
+   p_atomic_set(&drawable->base.stamp, 1);
+
+   return GL_TRUE;
+fail:
+   FREE(drawable);
+   return GL_FALSE;
+}
+
+void
+dri_destroy_buffer(__DRIdrawable * dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   int i;
+
+   pipe_surface_reference(&drawable->drisw_surface, NULL);
+
+   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
+      pipe_resource_reference(&drawable->textures[i], NULL);
+
+   FREE(drawable);
+}
+
+/**
+ * Validate the texture at an attachment.  Allocate the texture if it does not
+ * exist.  Used by the TFP extension.
+ */
+static void
+dri_drawable_validate_att(struct dri_drawable *drawable,
+                          enum st_attachment_type statt)
+{
+   enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
+   unsigned i, count = 0;
+
+   /* check if buffer already exists */
+   if (drawable->texture_mask & (1 << statt))
+      return;
+
+   /* 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;
+
+   drawable->base.validate(&drawable->base, statts, count, NULL);
+}
+
+/**
+ * These are used for GLX_EXT_texture_from_pixmap
+ */
+static void
+dri_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
+                    GLint format, __DRIdrawable *dPriv)
+{
+   struct dri_context *ctx = dri_context(pDRICtx);
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_resource *pt;
+
+   dri_drawable_validate_att(drawable, ST_ATTACHMENT_FRONT_LEFT);
+
+   pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
+
+   if (pt) {
+      enum pipe_format internal_format = pt->format;
+
+      if (format == __DRI_TEXTURE_FORMAT_RGB)  {
+         /* only need to cover the formats recognized by dri_fill_st_visual */
+         switch (internal_format) {
+         case PIPE_FORMAT_B8G8R8A8_UNORM:
+            internal_format = PIPE_FORMAT_B8G8R8X8_UNORM;
+            break;
+         case PIPE_FORMAT_A8R8G8B8_UNORM:
+            internal_format = PIPE_FORMAT_X8R8G8B8_UNORM;
+            break;
+         default:
+            break;
+         }
+      }
+
+      ctx->st->teximage(ctx->st,
+            (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
+            0, internal_format, pt, FALSE);
+   }
+}
+
+static void
+dri_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
+                   __DRIdrawable *dPriv)
+{
+   dri_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
+}
+
+const __DRItexBufferExtension driTexBufferExtension = {
+    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
+   dri_set_tex_buffer,
+   dri_set_tex_buffer2,
+   NULL,
+};
+
+/**
+ * Get the format and binding of an attachment.
+ */
+void
+dri_drawable_get_format(struct dri_drawable *drawable,
+                        enum st_attachment_type statt,
+                        enum pipe_format *format,
+                        unsigned *bind)
+{
+   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;
+      *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
+      break;
+   case ST_ATTACHMENT_DEPTH_STENCIL:
+      *format = drawable->stvis.depth_stencil_format;
+      *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
+      break;
+   default:
+      *format = PIPE_FORMAT_NONE;
+      *bind = 0;
+      break;
+   }
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */