svga: Add svga driver

1 files changed, 269 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_context.c b/src/gallium/drivers/svga/svga_context.c
new file mode 100644
index 00000000000..73233957f36
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_context.c
@@ -0,0 +1,269 @@
+/**********************************************************
+ * 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.
+ *
+ **********************************************************/
+
+#include "svga_cmd.h"
+
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_screen.h"
+#include "util/u_memory.h"
+#include "util/u_upload_mgr.h"
+
+#include "svga_context.h"
+#include "svga_screen.h"
+#include "svga_screen_texture.h"
+#include "svga_screen_buffer.h"
+#include "svga_winsys.h"
+#include "svga_swtnl.h"
+#include "svga_draw.h"
+#include "svga_debug.h"
+#include "svga_state.h"
+
+
+static void svga_destroy( struct pipe_context *pipe )
+{
+   struct svga_context *svga = svga_context( pipe );
+   unsigned shader;
+
+   svga_cleanup_framebuffer( svga );
+   svga_cleanup_tss_binding( svga );
+
+   svga_hwtnl_destroy( svga->hwtnl );
+
+   svga_cleanup_vertex_state(svga);
+   
+   svga->swc->destroy(svga->swc);
+   
+   svga_destroy_swtnl( svga );
+
+   u_upload_destroy( svga->upload_vb );
+   u_upload_destroy( svga->upload_ib );
+
+   for(shader = 0; shader < PIPE_SHADER_TYPES; ++shader)
+      pipe_buffer_reference( &svga->curr.cb[shader], NULL );
+
+   FREE( svga );
+}
+
+static unsigned int
+svga_is_texture_referenced( struct pipe_context *pipe,
+			    struct pipe_texture *texture,
+			    unsigned face, unsigned level)
+{
+   struct svga_texture *tex = svga_texture(texture);
+   struct svga_screen *ss = svga_screen(pipe->screen);
+
+   /**
+    * The screen does not cache texture writes.
+    */
+
+   if (!tex->handle || ss->sws->surface_is_flushed(ss->sws, tex->handle))
+      return PIPE_UNREFERENCED;
+
+   /**
+    * sws->surface_is_flushed() does not distinguish between read references
+    * and write references. So assume a reference is both.
+    */
+
+   return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
+}
+
+static unsigned int
+svga_is_buffer_referenced( struct pipe_context *pipe,
+			   struct pipe_buffer *buf)
+
+{
+   struct svga_screen *ss = svga_screen(pipe->screen);
+   struct svga_buffer *sbuf = svga_buffer(buf);
+
+   /**
+    * XXX: Check this.
+    * The screen may cache buffer writes, but when we map, we map out
+    * of those cached writes, so we don't need to set a
+    * PIPE_REFERENCED_FOR_WRITE flag for cached buffers.
+    */
+
+   if (!sbuf->handle || ss->sws->surface_is_flushed(ss->sws, sbuf->handle))
+     return PIPE_UNREFERENCED;
+
+   /**
+    * sws->surface_is_flushed() does not distinguish between read references
+    * and write references. So assume a reference is both,
+    * however, we make an exception for index- and vertex buffers, to avoid
+    * a flush in st_bufferobj_get_subdata, during display list replay.
+    */
+
+   if (sbuf->base.usage & (PIPE_BUFFER_USAGE_VERTEX | PIPE_BUFFER_USAGE_INDEX))
+      return PIPE_REFERENCED_FOR_READ;
+
+   return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
+}
+
+
+struct pipe_context *svga_context_create( struct pipe_screen *screen )
+{
+   struct svga_screen *svgascreen = svga_screen(screen);
+   struct svga_context *svga = NULL;
+   enum pipe_error ret;
+
+   svga = CALLOC_STRUCT(svga_context);
+   if (svga == NULL)
+      goto error1;
+
+   svga->pipe.winsys = screen->winsys;
+   svga->pipe.screen = screen;
+   svga->pipe.destroy = svga_destroy;
+   svga->pipe.clear = svga_clear;
+
+   svga->pipe.is_texture_referenced = svga_is_texture_referenced;
+   svga->pipe.is_buffer_referenced = svga_is_buffer_referenced;
+
+   svga->swc = svgascreen->sws->context_create(svgascreen->sws);
+   if(!svga->swc)
+      goto error2;
+
+   svga_init_blend_functions(svga);
+   svga_init_blit_functions(svga);
+   svga_init_depth_stencil_functions(svga);
+   svga_init_draw_functions(svga);
+   svga_init_flush_functions(svga);
+   svga_init_misc_functions(svga);
+   svga_init_rasterizer_functions(svga);
+   svga_init_sampler_functions(svga);
+   svga_init_fs_functions(svga);
+   svga_init_vs_functions(svga);
+   svga_init_vertex_functions(svga);
+   svga_init_constbuffer_functions(svga);
+   svga_init_query_functions(svga);
+
+   /* debug */
+   svga->debug.no_swtnl = debug_get_bool_option("SVGA_NO_SWTNL", FALSE);
+   svga->debug.force_swtnl = debug_get_bool_option("SVGA_FORCE_SWTNL", FALSE);
+   svga->debug.use_min_mipmap = debug_get_bool_option("SVGA_USE_MIN_MIPMAP", FALSE);
+   svga->debug.disable_shader = debug_get_num_option("SVGA_DISABLE_SHADER", ~0);
+
+   if (!svga_init_swtnl(svga))
+      goto error3;
+
+   svga->upload_ib = u_upload_create( svga->pipe.screen,
+                                      32 * 1024,
+                                      16,
+                                      PIPE_BUFFER_USAGE_INDEX );
+   if (svga->upload_ib == NULL)
+      goto error4;
+
+   svga->upload_vb = u_upload_create( svga->pipe.screen,
+                                      128 * 1024,
+                                      16,
+                                      PIPE_BUFFER_USAGE_VERTEX );
+   if (svga->upload_vb == NULL)
+      goto error5;
+
+   svga->hwtnl = svga_hwtnl_create( svga,
+                                    svga->upload_ib,
+                                    svga->swc );
+   if (svga->hwtnl == NULL)
+      goto error6;
+
+
+   ret = svga_emit_initial_state( svga );
+   if (ret)
+      goto error7;
+   
+   /* Avoid shortcircuiting state with initial value of zero.
+    */
+   memset(&svga->state.hw_clear, 0xcd, sizeof(svga->state.hw_clear));
+   memset(&svga->state.hw_clear.framebuffer, 0x0, 
+          sizeof(svga->state.hw_clear.framebuffer));
+
+   memset(&svga->state.hw_draw, 0xcd, sizeof(svga->state.hw_draw));
+   memset(&svga->state.hw_draw.views, 0x0, sizeof(svga->state.hw_draw.views));
+   svga->state.hw_draw.num_views = 0;
+
+   svga->dirty = ~0;
+   svga->state.white_fs_id = SVGA3D_INVALID_ID;
+
+   LIST_INITHEAD(&svga->dirty_buffers);
+
+   return &svga->pipe;
+
+error7:
+   svga_hwtnl_destroy( svga->hwtnl );
+error6:
+   u_upload_destroy( svga->upload_vb );
+error5:
+   u_upload_destroy( svga->upload_ib );
+error4:
+   svga_destroy_swtnl(svga);
+error3:
+   svga->swc->destroy(svga->swc);
+error2:
+   FREE(svga);
+error1:
+   return NULL;
+}
+
+
+void svga_context_flush( struct svga_context *svga, 
+                         struct pipe_fence_handle **pfence )
+{
+   struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
+   
+   /* Unmap upload manager buffers: 
+    */
+   u_upload_flush(svga->upload_vb);
+   u_upload_flush(svga->upload_ib);
+
+   /* Flush screen, to ensure that texture dma uploads are processed
+    * before submitting commands.
+    */
+   svga_screen_flush(svgascreen, NULL);
+   
+   svga_context_flush_buffers(svga);
+
+   /* Flush pending commands to hardware:
+    */
+   svga->swc->flush(svga->swc, pfence);
+
+   if (SVGA_DEBUG & DEBUG_SYNC) {
+      if (pfence && *pfence)
+         svga->pipe.screen->fence_finish( svga->pipe.screen, *pfence, 0);
+   }
+}
+
+
+void svga_hwtnl_flush_retry( struct svga_context *svga )
+{
+   enum pipe_error ret = PIPE_OK;
+
+   ret = svga_hwtnl_flush( svga->hwtnl );
+   if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
+      svga_context_flush( svga, NULL );
+      ret = svga_hwtnl_flush( svga->hwtnl );
+   }
+
+   assert(ret == 0);
+}
+