svga: add new svga_pipe_gs.c file

1 files changed, 142 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_pipe_gs.c b/src/gallium/drivers/svga/svga_pipe_gs.c
new file mode 100644
index 0000000000..d614e9d6c0
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_pipe_gs.c
@@ -0,0 +1,142 @@
+/**********************************************************
+ * Copyright 2014 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 "draw/draw_context.h"
+#include "util/u_inlines.h"
+#include "util/u_memory.h"
+#include "util/u_bitmask.h"
+#include "tgsi/tgsi_parse.h"
+#include "tgsi/tgsi_text.h"
+
+#include "svga_context.h"
+#include "svga_cmd.h"
+#include "svga_debug.h"
+#include "svga_shader.h"
+#include "svga_streamout.h"
+
+static void *
+svga_create_gs_state(struct pipe_context *pipe,
+                     const struct pipe_shader_state *templ)
+{
+   struct svga_context *svga = svga_context(pipe);
+   struct svga_geometry_shader *gs = CALLOC_STRUCT(svga_geometry_shader);
+
+   if (!gs)
+      return NULL;
+
+   gs->base.tokens = tgsi_dup_tokens(templ->tokens);
+
+   /* Collect basic info that we'll need later:
+    */
+   tgsi_scan_shader(gs->base.tokens, &gs->base.info);
+
+   gs->draw_shader = draw_create_geometry_shader(svga->swtnl.draw, templ);
+
+   gs->base.id = svga->debug.shader_id++;
+
+   gs->generic_outputs = svga_get_generic_outputs_mask(&gs->base.info);
+
+   /* check for any stream output declarations */
+   if (templ->stream_output.num_outputs) {
+      gs->base.stream_output = svga_create_stream_output(svga, &gs->base,
+                                                         &templ->stream_output);
+   }
+
+   return gs;
+}
+
+
+static void
+svga_bind_gs_state(struct pipe_context *pipe, void *shader)
+{
+   struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
+   struct svga_context *svga = svga_context(pipe);
+
+   svga->curr.user_gs = gs;
+   svga->dirty |= SVGA_NEW_GS;
+}
+
+
+static void
+svga_delete_gs_state(struct pipe_context *pipe, void *shader)
+{
+   struct svga_context *svga = svga_context(pipe);
+   struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
+   struct svga_geometry_shader *next_gs;
+   struct svga_shader_variant *variant, *tmp;
+   enum pipe_error ret;
+
+   svga_hwtnl_flush_retry(svga);
+
+   /* Start deletion from the original geometry shader state */
+   if (gs->base.parent != NULL)
+      gs = (struct svga_geometry_shader *)gs->base.parent;
+
+   /* Free the list of geometry shaders */
+   while (gs) {
+      next_gs = (struct svga_geometry_shader *)gs->base.next;
+
+      if (gs->base.stream_output != NULL)
+         svga_delete_stream_output(svga, gs->base.stream_output);
+
+      draw_delete_geometry_shader(svga->swtnl.draw, gs->draw_shader);
+
+      for (variant = gs->base.variants; variant; variant = tmp) {
+         tmp = variant->next;
+
+         /* Check if deleting currently bound shader */
+         if (variant == svga->state.hw_draw.gs) {
+            ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_GS, NULL);
+            if (ret != PIPE_OK) {
+               svga_context_flush(svga, NULL);
+               ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_GS, NULL);
+               assert(ret == PIPE_OK);
+            }
+            svga->state.hw_draw.gs = NULL;
+         }
+
+         ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_GS, variant);
+         if (ret != PIPE_OK) {
+            svga_context_flush(svga, NULL);
+            ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_GS,
+                                              variant);
+            assert(ret == PIPE_OK);
+         }
+      }
+
+      FREE((void *)gs->base.tokens);
+      FREE(gs);
+      gs = next_gs;
+   }
+}
+
+
+void
+svga_init_gs_functions(struct svga_context *svga)
+{
+   svga->pipe.create_gs_state = svga_create_gs_state;
+   svga->pipe.bind_gs_state = svga_bind_gs_state;
+   svga->pipe.delete_gs_state = svga_delete_gs_state;
+}