1 files changed, 595 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/dri/dri_drawable.c b/src/gallium/state_trackers/dri/dri_drawable.c
new file mode 100644
index 0000000000..15a2088df5
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_drawable.c
@@ -0,0 +1,595 @@
+/**************************************************************************
+ *
+ * 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_context.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_inlines.h"
+#include "state_tracker/drm_api.h"
+#include "state_tracker/dri1_api.h"
+#include "state_tracker/st_public.h"
+#include "state_tracker/st_context.h"
+#include "state_tracker/st_cb_fbo.h"
+
+#include "util/u_memory.h"
+
+static void
+dri_copy_to_front(__DRIdrawablePrivate * dPriv,
+		  struct pipe_surface *from,
+		  int x, int y, unsigned w, unsigned h)
+{
+   /* TODO send a message to the Xserver to copy to the real front buffer */
+}
+
+static struct pipe_surface *
+dri_surface_from_handle(struct pipe_screen *screen,
+			unsigned handle,
+			enum pipe_format format,
+			unsigned width, unsigned height, unsigned pitch)
+{
+   struct pipe_surface *surface = NULL;
+   struct pipe_texture *texture = NULL;
+   struct pipe_texture templat;
+   struct pipe_buffer *buf = NULL;
+
+   buf = drm_api_hooks.buffer_from_handle(screen, "dri2 buffer", handle);
+   if (!buf)
+      return NULL;
+
+   memset(&templat, 0, sizeof(templat));
+   templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
+   templat.target = PIPE_TEXTURE_2D;
+   templat.last_level = 0;
+   templat.depth[0] = 1;
+   templat.format = format;
+   templat.width[0] = width;
+   templat.height[0] = height;
+   pf_get_block(templat.format, &templat.block);
+
+   texture = screen->texture_blanket(screen, &templat, &pitch, buf);
+
+   /* we don't need the buffer from this point on */
+   pipe_buffer_reference(&buf, NULL);
+
+   if (!texture)
+      return NULL;
+
+   surface = screen->get_tex_surface(screen, texture, 0, 0, 0,
+				     PIPE_BUFFER_USAGE_GPU_READ |
+				     PIPE_BUFFER_USAGE_GPU_WRITE);
+
+   /* we don't need the texture from this point on */
+   pipe_texture_reference(&texture, NULL);
+   return surface;
+}
+
+/**
+ * This will be called a drawable is known to have been resized.
+ */
+void
+dri_get_buffers(__DRIdrawablePrivate * dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_surface *surface = NULL;
+   struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
+   __DRIbuffer *buffers = NULL;
+   __DRIscreen *dri_screen = drawable->sPriv;
+   __DRIdrawable *dri_drawable = drawable->dPriv;
+   boolean have_depth = FALSE;
+   int i, count;
+
+   buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
+						     &dri_drawable->w,
+						     &dri_drawable->h,
+						     drawable->attachments,
+						     drawable->
+						     num_attachments, &count,
+						     dri_drawable->
+						     loaderPrivate);
+
+   if (buffers == NULL) {
+      return;
+   }
+
+   /* 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;
+
+   for (i = 0; i < count; i++) {
+      enum pipe_format format = 0;
+      int index = 0;
+
+      switch (buffers[i].attachment) {
+      case __DRI_BUFFER_FRONT_LEFT:
+	 index = ST_SURFACE_FRONT_LEFT;
+	 format = PIPE_FORMAT_A8R8G8B8_UNORM;
+	 break;
+      case __DRI_BUFFER_FAKE_FRONT_LEFT:
+	 index = ST_SURFACE_FRONT_LEFT;
+	 format = PIPE_FORMAT_A8R8G8B8_UNORM;
+	 break;
+      case __DRI_BUFFER_BACK_LEFT:
+	 index = ST_SURFACE_BACK_LEFT;
+	 format = PIPE_FORMAT_A8R8G8B8_UNORM;
+	 break;
+      case __DRI_BUFFER_DEPTH:
+	 index = ST_SURFACE_DEPTH;
+	 format = PIPE_FORMAT_Z24S8_UNORM;
+	 break;
+      case __DRI_BUFFER_STENCIL:
+	 index = ST_SURFACE_DEPTH;
+	 format = PIPE_FORMAT_Z24S8_UNORM;
+	 break;
+      case __DRI_BUFFER_ACCUM:
+      default:
+	 assert(0);
+      }
+      assert(buffers[i].cpp == 4);
+
+      if (index == ST_SURFACE_DEPTH) {
+	 if (have_depth)
+	    continue;
+	 else
+	    have_depth = TRUE;
+      }
+
+      surface = dri_surface_from_handle(screen,
+					buffers[i].name,
+					format,
+					dri_drawable->w,
+					dri_drawable->h, buffers[i].pitch);
+
+      st_set_framebuffer_surface(drawable->stfb, index, surface);
+      pipe_surface_reference(&surface, NULL);
+   }
+   /* this needed, or else the state tracker fails to pick the new buffers */
+   st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
+}
+
+void
+dri_flush_frontbuffer(struct pipe_screen *screen,
+		      struct pipe_surface *surf, void *context_private)
+{
+   struct dri_context *ctx = (struct dri_context *)context_private;
+
+   dri_copy_to_front(ctx->dPriv, surf, 0, 0, surf->width, surf->height);
+}
+
+/**
+ * This is called when we need to set up GL rendering to a new X window.
+ */
+boolean
+dri_create_buffer(__DRIscreenPrivate * sPriv,
+		  __DRIdrawablePrivate * dPriv,
+		  const __GLcontextModes * visual, boolean isPixmap)
+{
+   enum pipe_format colorFormat, depthFormat, stencilFormat;
+   struct dri_screen *screen = sPriv->private;
+   struct dri_drawable *drawable = NULL;
+   struct pipe_screen *pscreen = screen->pipe_screen;
+   int i;
+
+   if (isPixmap)
+      goto fail;		       /* not implemented */
+
+   drawable = CALLOC_STRUCT(dri_drawable);
+   if (drawable == NULL)
+      goto fail;
+
+   /* XXX: todo: use the pipe_screen queries to figure out which
+    * render targets are supportable.
+    */
+   assert(visual->redBits == 8);
+   assert(visual->depthBits == 24 || visual->depthBits == 0);
+   assert(visual->stencilBits == 8 || visual->stencilBits == 0);
+
+   colorFormat = PIPE_FORMAT_A8R8G8B8_UNORM;
+
+   if (visual->depthBits) {
+      if (pscreen->is_format_supported(pscreen, PIPE_FORMAT_Z24S8_UNORM,
+				       PIPE_TEXTURE_2D,
+				       PIPE_TEXTURE_USAGE_RENDER_TARGET |
+				       PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0))
+	 depthFormat = PIPE_FORMAT_Z24S8_UNORM;
+      else
+	 depthFormat = PIPE_FORMAT_S8Z24_UNORM;
+   } else
+      depthFormat = PIPE_FORMAT_NONE;
+
+   if (visual->stencilBits) {
+      if (pscreen->is_format_supported(pscreen, PIPE_FORMAT_Z24S8_UNORM,
+				       PIPE_TEXTURE_2D,
+				       PIPE_TEXTURE_USAGE_RENDER_TARGET |
+				       PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0))
+	 stencilFormat = PIPE_FORMAT_Z24S8_UNORM;
+      else
+	 stencilFormat = PIPE_FORMAT_S8Z24_UNORM;
+   } else
+      stencilFormat = PIPE_FORMAT_NONE;
+
+   drawable->stfb = st_create_framebuffer(visual,
+					  colorFormat,
+					  depthFormat,
+					  stencilFormat,
+					  dPriv->w,
+					  dPriv->h, (void *)drawable);
+   if (drawable->stfb == NULL)
+      goto fail;
+
+   drawable->sPriv = sPriv;
+   drawable->dPriv = dPriv;
+   dPriv->driverPrivate = (void *)drawable;
+
+   /* setup dri2 buffers information */
+   i = 0;
+   drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
+#if 0
+   /* TODO incase of double buffer visual, delay fake creation */
+   drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
+#endif
+   if (visual->doubleBufferMode)
+      drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
+   if (visual->depthBits)
+      drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
+   if (visual->stencilBits)
+      drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
+   drawable->num_attachments = i;
+
+   drawable->desired_fences = 2;
+
+   return GL_TRUE;
+ fail:
+   FREE(drawable);
+   return GL_FALSE;
+}
+
+static struct pipe_fence_handle *
+dri_swap_fences_pop_front(struct dri_drawable *draw)
+{
+   struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
+   struct pipe_fence_handle *fence = NULL;
+
+   if (draw->cur_fences >= draw->desired_fences) {
+      screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
+      screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
+      --draw->cur_fences;
+      draw->tail &= DRI_SWAP_FENCES_MASK;
+   }
+   return fence;
+}
+
+static void
+dri_swap_fences_push_back(struct dri_drawable *draw,
+			  struct pipe_fence_handle *fence)
+{
+   struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
+
+   if (!fence)
+      return;
+
+   if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
+      draw->cur_fences++;
+      screen->fence_reference(screen, &draw->swap_fences[draw->head++],
+			      fence);
+      draw->head &= DRI_SWAP_FENCES_MASK;
+   }
+}
+
+void
+dri_destroy_buffer(__DRIdrawablePrivate * dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_fence_handle *fence;
+   struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
+
+   st_unreference_framebuffer(drawable->stfb);
+   drawable->desired_fences = 0;
+   while (drawable->cur_fences) {
+      fence = dri_swap_fences_pop_front(drawable);
+      screen->fence_reference(screen, &fence, NULL);
+   }
+
+   FREE(drawable);
+}
+
+static void
+dri1_update_drawables_locked(struct dri_context *ctx,
+			     __DRIdrawablePrivate * driDrawPriv,
+			     __DRIdrawablePrivate * driReadPriv)
+{
+   if (ctx->stLostLock) {
+      ctx->stLostLock = FALSE;
+      if (driDrawPriv == driReadPriv)
+	 DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
+      else
+	 DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
+					 driReadPriv);
+   }
+}
+
+/**
+ * This ensures all contexts which bind to a drawable pick up the
+ * drawable change and signal new buffer state.
+ * Calling st_resize_framebuffer for each context may seem like overkill,
+ * but no new buffers will actually be allocated if the dimensions don't
+ * change.
+ */
+
+static void
+dri1_propagate_drawable_change(struct dri_context *ctx)
+{
+   __DRIdrawablePrivate *dPriv = ctx->dPriv;
+   __DRIdrawablePrivate *rPriv = ctx->rPriv;
+   boolean flushed = FALSE;
+
+   if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
+
+      st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      flushed = TRUE;
+      ctx->d_stamp = dPriv->lastStamp;
+      st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
+
+   }
+
+   if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
+
+      if (!flushed)
+	 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      ctx->r_stamp = rPriv->lastStamp;
+      st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
+
+   } else if (rPriv && dPriv == rPriv) {
+
+      ctx->r_stamp = ctx->d_stamp;
+
+   }
+}
+
+void
+dri1_update_drawables(struct dri_context *ctx,
+		      struct dri_drawable *draw, struct dri_drawable *read)
+{
+   dri_lock(ctx);
+   dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
+   dri_unlock(ctx);
+
+   dri1_propagate_drawable_change(ctx);
+}
+
+static INLINE boolean
+dri1_intersect_src_bbox(struct drm_clip_rect *dst,
+			int dst_x,
+			int dst_y,
+			const struct drm_clip_rect *src,
+			const struct drm_clip_rect *bbox)
+{
+   int xy1;
+   int xy2;
+
+   xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
+      (int)bbox->x1 + dst_x;
+   xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
+      (int)bbox->x2 + dst_x;
+   if (xy1 >= xy2 || xy1 < 0)
+      return FALSE;
+
+   dst->x1 = xy1;
+   dst->x2 = xy2;
+
+   xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
+      (int)bbox->y1 + dst_y;
+   xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
+      (int)bbox->y2 + dst_y;
+   if (xy1 >= xy2 || xy1 < 0)
+      return FALSE;
+
+   dst->y1 = xy1;
+   dst->y2 = xy2;
+   return TRUE;
+}
+
+static void
+dri1_swap_copy(struct dri_context *ctx,
+	       struct pipe_surface *dst,
+	       struct pipe_surface *src,
+	       __DRIdrawablePrivate * dPriv, const struct drm_clip_rect *bbox)
+{
+   struct pipe_context *pipe = ctx->pipe;
+   struct drm_clip_rect clip;
+   struct drm_clip_rect *cur;
+   int i;
+
+   cur = dPriv->pClipRects;
+
+   for (i = 0; i < dPriv->numClipRects; ++i) {
+      if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox))
+	 pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
+			    src,
+			    (int)clip.x1 - dPriv->x,
+			    (int)clip.y1 - dPriv->y,
+			    clip.x2 - clip.x1, clip.y2 - clip.y1);
+   }
+}
+
+static void
+dri1_copy_to_front(struct dri_context *ctx,
+		   struct pipe_surface *surf,
+		   __DRIdrawablePrivate * dPriv,
+		   const struct drm_clip_rect *sub_box,
+		   struct pipe_fence_handle **fence)
+{
+   struct pipe_context *pipe = ctx->pipe;
+   boolean save_lost_lock;
+   uint cur_w;
+   uint cur_h;
+   struct drm_clip_rect bbox;
+   boolean visible = TRUE;
+
+   *fence = NULL;
+
+   dri_lock(ctx);
+   save_lost_lock = ctx->stLostLock;
+   dri1_update_drawables_locked(ctx, dPriv, dPriv);
+   st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
+
+   bbox.x1 = 0;
+   bbox.x2 = cur_w;
+   bbox.y1 = 0;
+   bbox.y2 = cur_h;
+
+   if (sub_box)
+      visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
+
+   if (visible && __dri1_api_hooks->present_locked) {
+
+      __dri1_api_hooks->present_locked(pipe,
+				       surf,
+				       dPriv->pClipRects,
+				       dPriv->numClipRects,
+				       dPriv->x, dPriv->y, &bbox, fence);
+
+   } else if (visible && __dri1_api_hooks->front_srf_locked) {
+
+      struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
+
+      if (front)
+	 dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
+
+      st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
+   }
+
+   ctx->stLostLock = save_lost_lock;
+
+   /**
+    * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
+    */
+
+   if (!sub_box)
+      dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
+
+   dri_unlock(ctx);
+   dri1_propagate_drawable_change(ctx);
+}
+
+void
+dri1_flush_frontbuffer(struct pipe_screen *screen,
+		       struct pipe_surface *surf, void *context_private)
+{
+   struct dri_context *ctx = (struct dri_context *)context_private;
+   struct pipe_fence_handle *dummy_fence;
+
+   dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
+   screen->fence_reference(screen, &dummy_fence, NULL);
+
+   /**
+    * FIXME: Do we need swap throttling here?
+    */
+}
+
+void
+dri_swap_buffers(__DRIdrawablePrivate * dPriv)
+{
+   struct dri_context *ctx;
+   struct pipe_surface *back_surf;
+   struct dri_drawable *draw = dri_drawable(dPriv);
+   struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
+   struct pipe_fence_handle *fence;
+   struct st_context *st = st_get_current();
+
+   assert(__dri1_api_hooks != NULL);
+
+   if (!st)
+      return;			       /* For now */
+
+   ctx = (struct dri_context *)st->pipe->priv;
+
+   st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
+   if (back_surf) {
+      st_notify_swapbuffers(draw->stfb);
+      st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      fence = dri_swap_fences_pop_front(draw);
+      if (fence) {
+	 (void)screen->fence_finish(screen, fence, 0);
+	 screen->fence_reference(screen, &fence, NULL);
+      }
+      dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
+      dri_swap_fences_push_back(draw, fence);
+      screen->fence_reference(screen, &fence, NULL);
+   }
+}
+
+void
+dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
+{
+   struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
+   struct drm_clip_rect sub_bbox;
+   struct dri_context *ctx;
+   struct pipe_surface *back_surf;
+   struct dri_drawable *draw = dri_drawable(dPriv);
+   struct pipe_fence_handle *dummy_fence;
+   struct st_context *st = st_get_current();
+
+   assert(__dri1_api_hooks != NULL);
+
+   if (!st)
+      return;
+
+   ctx = (struct dri_context *)st->pipe->priv;
+
+   sub_bbox.x1 = x;
+   sub_bbox.x2 = x + w;
+   sub_bbox.y1 = y;
+   sub_bbox.y2 = y + h;
+
+   st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
+   if (back_surf) {
+      st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
+      screen->fence_reference(screen, &dummy_fence, NULL);
+   }
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */