libX11 libxtrans mesa xserver git update 17 dec 2011

1 files changed, 197 insertions, 134 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_cb_xformfb.c b/mesalib/src/mesa/state_tracker/st_cb_xformfb.c
index 378b4822b..2fc28dc24 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_xformfb.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_xformfb.c
@@ -1,134 +1,197 @@
-/**************************************************************************

- * 

- * Copyright 2010 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 THE AUTHORS 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.

- * 

- **************************************************************************/

-

-

-/**

- * Transform feedback functions.

- *

- * \author Brian Paul

- */

-

-

-#include "main/imports.h"

-#include "main/context.h"

-#include "main/mfeatures.h"

-#include "main/transformfeedback.h"

-

-#include "st_cb_xformfb.h"

-

-

-#if FEATURE_EXT_transform_feedback

-

-#if 0

-static struct gl_transform_feedback_object *

-st_new_transform_feedback(struct gl_context *ctx, GLuint name)

-{

-   struct gl_transform_feedback_object *obj;

-   obj = CALLOC_STRUCT(gl_transform_feedback_object);

-   if (obj) {

-      obj->Name = name;

-      obj->RefCount = 1;

-   }

-   return obj;

-}

-#endif

-

-#if 0

-static void

-st_delete_transform_feedback(struct gl_context *ctx,

-                             struct gl_transform_feedback_object *obj)

-{

-   GLuint i;

-

-   for (i = 0; i < Elements(obj->Buffers); i++) {

-      _mesa_reference_buffer_object(ctx, &obj->Buffers[i], NULL);

-   }

-

-   free(obj);

-}

-#endif

-

-

-static void

-st_begin_transform_feedback(struct gl_context *ctx, GLenum mode,

-                            struct gl_transform_feedback_object *obj)

-{

-   /* to-do */

-}

-

-

-static void

-st_end_transform_feedback(struct gl_context *ctx,

-                          struct gl_transform_feedback_object *obj)

-{

-   /* to-do */

-}

-

-

-static void

-st_pause_transform_feedback(struct gl_context *ctx,

-                            struct gl_transform_feedback_object *obj)

-{

-   /* to-do */

-}

-

-

-static void

-st_resume_transform_feedback(struct gl_context *ctx,

-                             struct gl_transform_feedback_object *obj)

-{

-   /* to-do */

-}

-

-

-static void

-st_draw_transform_feedback(struct gl_context *ctx, GLenum mode,

-                           struct gl_transform_feedback_object *obj)

-{

-   /* XXX to do */

-   /*

-    * Get number of vertices in obj's feedback buffer.

-    * Call ctx->Exec.DrawArrays(mode, 0, count);

-    */

-}

-

-

-void

-st_init_xformfb_functions(struct dd_function_table *functions)

-{

-   /* let core Mesa plug in its functions */

-   _mesa_init_transform_feedback_functions(functions);

-

-   /* then override a few: */

-   functions->BeginTransformFeedback = st_begin_transform_feedback;

-   functions->EndTransformFeedback = st_end_transform_feedback;

-   functions->PauseTransformFeedback = st_pause_transform_feedback;

-   functions->ResumeTransformFeedback = st_resume_transform_feedback;

-   functions->DrawTransformFeedback = st_draw_transform_feedback;

-}

-

-#endif /* FEATURE_EXT_transform_feedback */

+/**************************************************************************
+ * 
+ * Copyright 2010 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 THE AUTHORS 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.
+ * 
+ **************************************************************************/
+
+
+/**
+ * Transform feedback functions.
+ *
+ * \author Brian Paul
+ *         Marek Olšák
+ */
+
+
+#include "main/bufferobj.h"
+#include "main/context.h"
+#include "main/mfeatures.h"
+#include "main/transformfeedback.h"
+
+#include "st_cb_bufferobjects.h"
+#include "st_cb_xformfb.h"
+#include "st_context.h"
+
+#include "pipe/p_context.h"
+#include "util/u_draw.h"
+#include "util/u_inlines.h"
+#include "cso_cache/cso_context.h"
+
+#if FEATURE_EXT_transform_feedback
+
+struct st_transform_feedback_object {
+   struct gl_transform_feedback_object base;
+
+   unsigned num_targets;
+   struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
+};
+
+
+static struct gl_transform_feedback_object *
+st_new_transform_feedback(struct gl_context *ctx, GLuint name)
+{
+   struct st_transform_feedback_object *obj;
+
+   obj = CALLOC_STRUCT(st_transform_feedback_object);
+   if (!obj)
+      return NULL;
+
+   obj->base.Name = name;
+   obj->base.RefCount = 1;
+   return &obj->base;
+}
+
+
+static void
+st_delete_transform_feedback(struct gl_context *ctx,
+                             struct gl_transform_feedback_object *obj)
+{
+   struct st_transform_feedback_object *sobj =
+         (struct st_transform_feedback_object*)obj;
+   unsigned i;
+
+   /* Unreference targets. */
+   for (i = 0; i < sobj->num_targets; i++) {
+      pipe_so_target_reference(&sobj->targets[i], NULL);
+   }
+
+   for (i = 0; i < Elements(sobj->base.Buffers); i++) {
+      _mesa_reference_buffer_object(ctx, &sobj->base.Buffers[i], NULL);
+   }
+
+   free(obj);
+}
+
+
+/* XXX Do we really need the mode? */
+static void
+st_begin_transform_feedback(struct gl_context *ctx, GLenum mode,
+                            struct gl_transform_feedback_object *obj)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct st_transform_feedback_object *sobj =
+         (struct st_transform_feedback_object*)obj;
+   unsigned i, max_num_targets;
+
+   max_num_targets = MIN2(Elements(sobj->base.Buffers),
+                          Elements(sobj->targets));
+
+   /* Convert the transform feedback state into the gallium representation. */
+   for (i = 0; i < max_num_targets; i++) {
+      struct st_buffer_object *bo = st_buffer_object(sobj->base.Buffers[i]);
+
+      if (bo) {
+         /* Check whether we need to recreate the target. */
+         if (!sobj->targets[i] ||
+             sobj->targets[i]->buffer != bo->buffer ||
+             sobj->targets[i]->buffer_offset != sobj->base.Offset[i] ||
+             sobj->targets[i]->buffer_size != sobj->base.Size[i]) {
+            /* Create a new target. */
+            struct pipe_stream_output_target *so_target =
+                  pipe->create_stream_output_target(pipe, bo->buffer,
+                                                    sobj->base.Offset[i],
+                                                    sobj->base.Size[i]);
+
+            pipe_so_target_reference(&sobj->targets[i], NULL);
+            sobj->targets[i] = so_target;
+         }
+
+         sobj->num_targets = i+1;
+      } else {
+         pipe_so_target_reference(&sobj->targets[i], NULL);
+      }
+   }
+
+   /* Start writing at the beginning of each target. */
+   cso_set_stream_outputs(st->cso_context, sobj->num_targets, sobj->targets,
+                          0);
+}
+
+
+static void
+st_stop_transform_feedback(struct gl_context *ctx,
+                           struct gl_transform_feedback_object *obj)
+{
+   struct st_context *st = st_context(ctx);
+   cso_set_stream_outputs(st->cso_context, 0, NULL, 0);
+}
+
+
+static void
+st_resume_transform_feedback(struct gl_context *ctx,
+                             struct gl_transform_feedback_object *obj)
+{
+   struct st_context *st = st_context(ctx);
+   struct st_transform_feedback_object *sobj =
+         (struct st_transform_feedback_object*)obj;
+
+   cso_set_stream_outputs(st->cso_context, sobj->num_targets, sobj->targets,
+                          ~0);
+}
+
+/* Set count_from_stream_output to any stream output target
+ * from the transform feedback object. */
+void
+st_transform_feedback_draw_init(struct gl_transform_feedback_object *obj,
+                                struct pipe_draw_info *out)
+{
+   struct st_transform_feedback_object *sobj =
+         (struct st_transform_feedback_object*)obj;
+   unsigned i;
+
+   for (i = 0; i < Elements(sobj->targets); i++) {
+      if (sobj->targets[i]) {
+         out->count_from_stream_output = sobj->targets[i];
+         return;
+      }
+   }
+
+   assert(0);
+   out->count_from_stream_output = NULL;
+}
+
+
+void
+st_init_xformfb_functions(struct dd_function_table *functions)
+{
+   functions->NewTransformFeedback = st_new_transform_feedback;
+   functions->DeleteTransformFeedback = st_delete_transform_feedback;
+   functions->BeginTransformFeedback = st_begin_transform_feedback;
+   functions->EndTransformFeedback = st_stop_transform_feedback;
+   functions->PauseTransformFeedback = st_stop_transform_feedback;
+   functions->ResumeTransformFeedback = st_resume_transform_feedback;
+}
+
+#endif /* FEATURE_EXT_transform_feedback */