Add Intel i965G/Q DRI driver.

This driver comes from Tungsten Graphics, with a few further modifications by
Intel.

1 files changed, 207 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/intel_buffer_objects.c b/src/mesa/drivers/dri/i965/intel_buffer_objects.c
new file mode 100644
index 0000000000..0f88583635
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/intel_buffer_objects.c
@@ -0,0 +1,207 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ * 
+ **************************************************************************/
+
+
+#include "imports.h"
+#include "mtypes.h"
+#include "bufferobj.h"
+
+#include "intel_context.h"
+#include "intel_buffer_objects.h"
+#include "bufmgr.h"
+
+
+/**
+ * There is some duplication between mesa's bufferobjects and our
+ * bufmgr buffers.  Both have an integer handle and a hashtable to
+ * lookup an opaque structure.  It would be nice if the handles and
+ * internal structure where somehow shared.
+ */
+static struct gl_buffer_object *intel_bufferobj_alloc( GLcontext *ctx, 
+						       GLuint name, 
+						       GLenum target )
+{
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_buffer_object *obj = MALLOC_STRUCT(intel_buffer_object);
+
+   _mesa_initialize_buffer_object(&obj->Base, name, target);
+
+   /* XXX:  We generate our own handle, which is different to 'name' above.
+    */
+   bmGenBuffers(intel, "bufferobj", 1, &obj->buffer);
+   assert(obj->buffer);
+
+   return &obj->Base;
+}
+
+
+/**
+ * Deallocate/free a vertex/pixel buffer object.
+ * Called via glDeleteBuffersARB().
+ */
+static void intel_bufferobj_free( GLcontext *ctx, 
+				  struct gl_buffer_object *obj )
+{ 
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
+
+   assert(intel_obj);
+
+   if (intel_obj->buffer) 
+      bmDeleteBuffers( intel, 1, &intel_obj->buffer );
+  
+   _mesa_free(intel_obj);
+}
+
+
+
+/**
+ * Allocate space for and store data in a buffer object.  Any data that was
+ * previously stored in the buffer object is lost.  If data is NULL,
+ * memory will be allocated, but no copy will occur.
+ * Called via glBufferDataARB().
+ */
+static void intel_bufferobj_data( GLcontext *ctx, 
+				  GLenum target, 
+				  GLsizeiptrARB size,
+				  const GLvoid *data, 
+				  GLenum usage,
+				  struct gl_buffer_object *obj )
+{
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
+
+   /* XXX: do something useful with 'usage' (eg. populate flags
+    * argument below)
+    */
+   assert(intel_obj);
+
+   obj->Size = size;
+   obj->Usage = usage;
+
+   bmBufferDataAUB(intel, intel_obj->buffer, size, data, 0,
+		   0, 0);
+}
+
+
+/**
+ * Replace data in a subrange of buffer object.  If the data range
+ * specified by size + offset extends beyond the end of the buffer or
+ * if data is NULL, no copy is performed.
+ * Called via glBufferSubDataARB().
+ */
+static void intel_bufferobj_subdata( GLcontext *ctx, 
+				     GLenum target, 
+				     GLintptrARB offset,
+				     GLsizeiptrARB size, 
+				     const GLvoid * data,
+				     struct gl_buffer_object * obj )
+{
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
+
+   assert(intel_obj);
+   bmBufferSubDataAUB(intel, intel_obj->buffer, offset, size, data, 0, 0);
+}
+
+
+/**
+ * Called via glGetBufferSubDataARB().
+ */
+static void intel_bufferobj_get_subdata( GLcontext *ctx, 
+					 GLenum target, 
+					 GLintptrARB offset,
+					 GLsizeiptrARB size, 
+					 GLvoid * data,
+					 struct gl_buffer_object * obj )
+{
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
+
+   assert(intel_obj);
+   bmBufferGetSubData(intel, intel_obj->buffer, offset, size, data);
+}
+
+
+
+/**
+ * Called via glMapBufferARB().
+ */
+static void *intel_bufferobj_map( GLcontext *ctx, 
+				  GLenum target, 
+				  GLenum access,
+				  struct gl_buffer_object *obj )
+{
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
+
+   /* XXX: Translate access to flags arg below:
+    */
+   assert(intel_obj);
+   assert(intel_obj->buffer);
+   obj->Pointer = bmMapBuffer(intel, intel_obj->buffer, 0);
+   return obj->Pointer;
+}
+
+
+/**
+ * Called via glMapBufferARB().
+ */
+static GLboolean intel_bufferobj_unmap( GLcontext *ctx,
+					GLenum target,
+					struct gl_buffer_object *obj )
+{
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
+
+   assert(intel_obj);
+   assert(intel_obj->buffer);
+   assert(obj->Pointer);
+   bmUnmapBufferAUB(intel, intel_obj->buffer, 0, 0);
+   obj->Pointer = NULL;
+   return GL_TRUE;
+}
+
+struct buffer *intel_bufferobj_buffer( const struct intel_buffer_object *intel_obj )
+{
+   assert(intel_obj->Base.Name);
+   assert(intel_obj->buffer);
+   return intel_obj->buffer;
+}  
+
+void intel_bufferobj_init( struct intel_context *intel )
+{
+   GLcontext *ctx = &intel->ctx;
+
+   ctx->Driver.NewBufferObject = intel_bufferobj_alloc;
+   ctx->Driver.DeleteBuffer = intel_bufferobj_free;
+   ctx->Driver.BufferData = intel_bufferobj_data;
+   ctx->Driver.BufferSubData = intel_bufferobj_subdata;
+   ctx->Driver.GetBufferSubData = intel_bufferobj_get_subdata;
+   ctx->Driver.MapBuffer = intel_bufferobj_map;
+   ctx->Driver.UnmapBuffer = intel_bufferobj_unmap;
+}