svga: Add svga driver

1 files changed, 299 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_winsys.h b/src/gallium/drivers/svga/svga_winsys.h
new file mode 100644
index 00000000000..59f299c1858
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_winsys.h
@@ -0,0 +1,299 @@
+/**********************************************************
+ * Copyright 2008-2009 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, 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 THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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.
+ *
+ **********************************************************/
+
+/**
+ * @file
+ * VMware SVGA specific winsys interface.
+ * 
+ * @author Jose Fonseca <[email protected]>
+ * 
+ * Documentation taken from the VMware SVGA DDK.
+ */
+
+#ifndef SVGA_WINSYS_H_
+#define SVGA_WINSYS_H_
+
+
+#include "svga_types.h"
+#include "svga_reg.h"
+#include "svga3d_reg.h"
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_defines.h"
+
+
+struct svga_winsys_screen;
+struct svga_winsys_buffer;
+struct pipe_screen;
+struct pipe_context;
+struct pipe_fence_handle;
+struct pipe_texture;
+struct svga_region;
+
+
+#define SVGA_BUFFER_USAGE_PINNED  (PIPE_BUFFER_USAGE_CUSTOM << 0)
+#define SVGA_BUFFER_USAGE_WRAPPED (PIPE_BUFFER_USAGE_CUSTOM << 1)
+
+
+/** Opaque surface handle */
+struct svga_winsys_surface;
+
+/** Opaque buffer handle */
+struct svga_winsys_handle;
+
+
+/**
+ * SVGA per-context winsys interface.
+ */
+struct svga_winsys_context
+{
+   void
+   (*destroy)(struct svga_winsys_context *swc);
+
+   void *       
+   (*reserve)(struct svga_winsys_context *swc, 
+	      uint32_t nr_bytes, uint32_t nr_relocs );
+   
+   /**
+    * Emit a relocation for a host surface.
+    * 
+    * @param flags PIPE_BUFFER_USAGE_GPU_READ/WRITE
+    * 
+    * NOTE: Order of this call does matter. It should be the same order
+    * as relocations appear in the command buffer.
+    */
+   void
+   (*surface_relocation)(struct svga_winsys_context *swc, 
+	                 uint32 *sid, 
+	                 struct svga_winsys_surface *surface,
+	                 unsigned flags);
+   
+   /**
+    * Emit a relocation for a guest memory region.
+    * 
+    * @param flags PIPE_BUFFER_USAGE_GPU_READ/WRITE
+    * 
+    * NOTE: Order of this call does matter. It should be the same order
+    * as relocations appear in the command buffer.
+    */
+   void
+   (*region_relocation)(struct svga_winsys_context *swc, 
+	                struct SVGAGuestPtr *ptr, 
+	                struct svga_winsys_buffer *buffer,
+	                uint32 offset,
+                        unsigned flags);
+
+   void
+   (*commit)(struct svga_winsys_context *swc);
+   
+   enum pipe_error
+   (*flush)(struct svga_winsys_context *swc, 
+	    struct pipe_fence_handle **pfence);
+
+   /** 
+    * Context ID used to fill in the commands
+    * 
+    * Context IDs are arbitrary small non-negative integers,
+    * global to the entire SVGA device.
+    */
+   uint32 cid;
+};
+
+
+/**
+ * SVGA per-screen winsys interface.
+ */
+struct svga_winsys_screen
+{
+   void
+   (*destroy)(struct svga_winsys_screen *sws);
+   
+   boolean
+   (*get_cap)(struct svga_winsys_screen *sws,
+              SVGA3dDevCapIndex index,
+              SVGA3dDevCapResult *result);
+   
+   /**
+    * Create a new context.
+    *
+    * Context objects encapsulate all render state, and shader
+    * objects are per-context.
+    *
+    * Surfaces are not per-context. The same surface can be shared
+    * between multiple contexts, and surface operations can occur
+    * without a context.
+    */
+   struct svga_winsys_context *
+   (*context_create)(struct svga_winsys_screen *sws);
+   
+   
+   /**
+    * This creates a "surface" object in the SVGA3D device,
+    * and returns the surface ID (sid). Surfaces are generic
+    * containers for host VRAM objects like textures, vertex
+    * buffers, and depth/stencil buffers.
+    *
+    * Surfaces are hierarchial:
+    *
+    * - Surface may have multiple faces (for cube maps)
+    *
+    * - Each face has a list of mipmap levels
+    *
+    * - Each mipmap image may have multiple volume
+    *   slices, if the image is three dimensional.
+    *
+    * - Each slice is a 2D array of 'blocks'
+    *
+    * - Each block may be one or more pixels.
+    *   (Usually 1, more for DXT or YUV formats.)
+    *
+    * Surfaces are generic host VRAM objects. The SVGA3D device
+    * may optimize surfaces according to the format they were
+    * created with, but this format does not limit the ways in
+    * which the surface may be used. For example, a depth surface
+    * can be used as a texture, or a floating point image may
+    * be used as a vertex buffer. Some surface usages may be
+    * lower performance, due to software emulation, but any
+    * usage should work with any surface.
+    */
+   struct svga_winsys_surface *
+   (*surface_create)(struct svga_winsys_screen *sws,
+                     SVGA3dSurfaceFlags flags,
+                     SVGA3dSurfaceFormat format,
+                     SVGA3dSize size,
+                     uint32 numFaces,
+                     uint32 numMipLevels);
+
+   /**
+    * Whether this surface is sitting in a validate list
+    */
+   boolean
+   (*surface_is_flushed)(struct svga_winsys_screen *sws,
+                         struct svga_winsys_surface *surface);
+
+   /**
+    * Reference a SVGA3D surface object. This allows sharing of a
+    * surface between different objects.
+    */
+   void 
+   (*surface_reference)(struct svga_winsys_screen *sws,
+			struct svga_winsys_surface **pdst,
+			struct svga_winsys_surface *src);
+
+   /**
+    * Buffer management. Buffer attributes are mostly fixed over its lifetime.
+    *
+    * Remember that gallium gets to choose the interface it needs, and the
+    * window systems must then implement that interface (rather than the
+    * other way around...).
+    *
+    * usage is a bitmask of PIPE_BUFFER_USAGE_PIXEL/VERTEX/INDEX/CONSTANT. This
+    * usage argument is only an optimization hint, not a guarantee, therefore 
+    * proper behavior must be observed in all circumstances.
+    *
+    * alignment indicates the client's alignment requirements, eg for
+    * SSE instructions.
+    */
+   struct svga_winsys_buffer *
+   (*buffer_create)( struct svga_winsys_screen *sws, 
+	             unsigned alignment, 
+	             unsigned usage,
+	             unsigned size );
+
+   /** 
+    * Map the entire data store of a buffer object into the client's address.
+    * flags is a bitmask of:
+    * - PIPE_BUFFER_USAGE_CPU_READ/WRITE
+    * - PIPE_BUFFER_USAGE_DONTBLOCK
+    * - PIPE_BUFFER_USAGE_UNSYNCHRONIZED
+    */
+   void *
+   (*buffer_map)( struct svga_winsys_screen *sws, 
+	          struct svga_winsys_buffer *buf,
+		  unsigned usage );
+   
+   void 
+   (*buffer_unmap)( struct svga_winsys_screen *sws, 
+                    struct svga_winsys_buffer *buf );
+
+   void 
+   (*buffer_destroy)( struct svga_winsys_screen *sws,
+	              struct svga_winsys_buffer *buf );
+
+
+   /**
+    * Reference a fence object.
+    */
+   void
+   (*fence_reference)( struct svga_winsys_screen *sws,
+                       struct pipe_fence_handle **pdst,
+                       struct pipe_fence_handle *src );
+
+   /**
+    * Checks whether the fence has been signalled.
+    * \param flags  driver-specific meaning
+    * \return zero on success.
+    */
+   int (*fence_signalled)( struct svga_winsys_screen *sws,
+                           struct pipe_fence_handle *fence,
+                           unsigned flag );
+
+   /**
+    * Wait for the fence to finish.
+    * \param flags  driver-specific meaning
+    * \return zero on success.
+    */
+   int (*fence_finish)( struct svga_winsys_screen *sws,
+                        struct pipe_fence_handle *fence,
+                        unsigned flag );
+
+};
+
+
+struct pipe_context *
+svga_context_create(struct pipe_screen *screen);
+
+struct pipe_screen *
+svga_screen_create(struct svga_winsys_screen *sws);
+
+struct svga_winsys_screen *
+svga_winsys_screen(struct pipe_screen *screen);
+
+struct pipe_buffer *
+svga_screen_buffer_wrap_surface(struct pipe_screen *screen,
+				enum SVGA3dSurfaceFormat format,
+				struct svga_winsys_surface *srf);
+
+struct svga_winsys_surface *
+svga_screen_texture_get_winsys_surface(struct pipe_texture *texture);
+struct svga_winsys_surface *
+svga_screen_buffer_get_winsys_surface(struct pipe_buffer *buffer);
+
+boolean
+svga_screen_buffer_from_texture(struct pipe_texture *texture,
+				struct pipe_buffer **buffer,
+				unsigned *stride);
+
+#endif /* SVGA_WINSYS_H_ */