mesa xserver pixman git update 25 nov 2011

1 files changed, 145 insertions, 0 deletions

diff --git a/mesalib/src/gallium/auxiliary/util/u_vbuf.h b/mesalib/src/gallium/auxiliary/util/u_vbuf.h
new file mode 100644
index 000000000..57b93ddea
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_vbuf.h
@@ -0,0 +1,145 @@
+/**************************************************************************
+ *
+ * Copyright 2011 Marek Olšák <maraeo@gmail.com>
+ * 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 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.
+ *
+ **************************************************************************/
+
+#ifndef U_VBUF_MGR_H
+#define U_VBUF_MGR_H
+
+/* This module builds upon u_upload_mgr and translate_cache and takes care of
+ * user buffer uploads and vertex format fallbacks. It's designed
+ * for the drivers which don't always use the Draw module. (e.g. for HWTCL)
+ */
+
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+#include "util/u_transfer.h"
+
+/* Hardware vertex fetcher limitations can be described by this structure. */
+struct u_vbuf_caps {
+   /* Vertex format CAPs. */
+   /* TRUE if hardware supports it. */
+   unsigned format_fixed32:1;    /* PIPE_FORMAT_*32*_FIXED */
+   unsigned format_float16:1;    /* PIPE_FORMAT_*16*_FLOAT */
+   unsigned format_float64:1;    /* PIPE_FORMAT_*64*_FLOAT */
+   unsigned format_norm32:1;     /* PIPE_FORMAT_*32*NORM */
+   unsigned format_scaled32:1;   /* PIPE_FORMAT_*32*SCALED */
+
+   /* Whether vertex fetches don't have to be dword-aligned. */
+   /* TRUE if hardware supports it. */
+   unsigned fetch_dword_unaligned:1;
+};
+
+/* The manager.
+ * This structure should also be used to access vertex buffers
+ * from a driver. */
+struct u_vbuf {
+   /* This is what was set in set_vertex_buffers.
+    * May contain user buffers. */
+   struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
+   unsigned nr_vertex_buffers;
+
+   /* Contains only real vertex buffers.
+    * Hardware drivers should use real_vertex_buffers[i]
+    * instead of vertex_buffers[i].buffer. */
+   struct pipe_vertex_buffer real_vertex_buffer[PIPE_MAX_ATTRIBS];
+   int nr_real_vertex_buffers;
+
+   /* The index buffer. */
+   struct pipe_index_buffer index_buffer;
+
+   /* This uploader can optionally be used by the driver.
+    *
+    * Allowed functions:
+    * - u_upload_alloc
+    * - u_upload_data
+    * - u_upload_buffer
+    * - u_upload_flush */
+   struct u_upload_mgr *uploader;
+
+   struct u_vbuf_caps caps;
+};
+
+struct u_vbuf_resource {
+   struct u_resource b;
+   uint8_t *user_ptr;
+};
+
+/* Opaque type containing information about vertex elements for the manager. */
+struct u_vbuf_elements;
+
+enum u_fetch_alignment {
+   U_VERTEX_FETCH_BYTE_ALIGNED,
+   U_VERTEX_FETCH_DWORD_ALIGNED
+};
+
+enum u_vbuf_return_flags {
+   U_VBUF_BUFFERS_UPDATED = 1
+};
+
+
+struct u_vbuf *
+u_vbuf_create(struct pipe_context *pipe,
+              unsigned upload_buffer_size,
+              unsigned upload_buffer_alignment,
+              unsigned upload_buffer_bind,
+              enum u_fetch_alignment fetch_alignment);
+
+void u_vbuf_destroy(struct u_vbuf *mgr);
+
+struct u_vbuf_elements *
+u_vbuf_create_vertex_elements(struct u_vbuf *mgr,
+                              unsigned count,
+                              const struct pipe_vertex_element *attrs,
+                              struct pipe_vertex_element *native_attrs);
+
+void u_vbuf_bind_vertex_elements(struct u_vbuf *mgr,
+                                 void *cso,
+                                 struct u_vbuf_elements *ve);
+
+void u_vbuf_destroy_vertex_elements(struct u_vbuf *mgr,
+                                    struct u_vbuf_elements *ve);
+
+void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr,
+                               unsigned count,
+                               const struct pipe_vertex_buffer *bufs);
+
+void u_vbuf_set_index_buffer(struct u_vbuf *mgr,
+                             const struct pipe_index_buffer *ib);
+
+enum u_vbuf_return_flags u_vbuf_draw_begin(struct u_vbuf *mgr,
+                                           const struct pipe_draw_info *info);
+
+unsigned u_vbuf_draw_max_vertex_count(struct u_vbuf *mgr);
+
+void u_vbuf_draw_end(struct u_vbuf *mgr);
+
+
+static INLINE struct u_vbuf_resource *u_vbuf_resource(struct pipe_resource *r)
+{
+   return (struct u_vbuf_resource*)r;
+}
+
+#endif