1 files changed, 239 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_state_vs.c b/src/gallium/drivers/svga/svga_state_vs.c
new file mode 100644
index 00000000000..a947745732c
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_state_vs.c
@@ -0,0 +1,239 @@
+/**********************************************************
+ * 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 "pipe/p_inlines.h"
+#include "pipe/p_defines.h"
+#include "util/u_math.h"
+#include "translate/translate.h"
+
+#include "svga_context.h"
+#include "svga_state.h"
+#include "svga_cmd.h"
+#include "svga_tgsi.h"
+
+#include "svga_hw_reg.h"
+
+/***********************************************************************
+ */
+
+
+static INLINE int compare_vs_keys( const struct svga_vs_compile_key *a,
+                                   const struct svga_vs_compile_key *b )
+{
+   unsigned keysize = svga_vs_key_size( a );
+   return memcmp( a, b, keysize );
+}
+
+
+static struct svga_shader_result *search_vs_key( struct svga_vertex_shader *vs,
+                                                 const struct svga_vs_compile_key *key )
+{
+   struct svga_shader_result *result = vs->base.results;
+
+   assert(key);
+
+   for ( ; result; result = result->next) {
+      if (compare_vs_keys( key, &result->key.vkey ) == 0)
+         return result;
+   }
+   
+   return NULL;
+}
+
+
+static enum pipe_error compile_vs( struct svga_context *svga,
+                                   struct svga_vertex_shader *vs,
+                                   const struct svga_vs_compile_key *key,
+                                   struct svga_shader_result **out_result )
+{
+   struct svga_shader_result *result;
+   enum pipe_error ret = PIPE_OK;
+
+   result = svga_translate_vertex_program( vs, key );
+   if (result == NULL) {
+      ret = PIPE_ERROR_OUT_OF_MEMORY;
+      goto fail;
+   }
+
+   ret = SVGA3D_DefineShader(svga->swc, 
+                             svga->state.next_vs_id,
+                             SVGA3D_SHADERTYPE_VS,
+                             result->tokens, 
+                             result->nr_tokens * sizeof result->tokens[0]);
+   if (ret)
+      goto fail;
+
+   *out_result = result;
+   result->id = svga->state.next_vs_id++;
+   result->next = vs->base.results;
+   vs->base.results = result;
+   return PIPE_OK;
+
+fail:
+   if (result)
+      svga_destroy_shader_result( result );
+   return ret;
+}
+
+/* SVGA_NEW_PRESCALE, SVGA_NEW_RAST, SVGA_NEW_ZERO_STRIDE
+ */
+static int make_vs_key( struct svga_context *svga,
+                        struct svga_vs_compile_key *key )
+{
+   memset(key, 0, sizeof *key);
+   key->need_prescale = svga->state.hw_clear.prescale.enabled;
+   key->allow_psiz = svga->curr.rast->templ.point_size_per_vertex;
+   key->zero_stride_vertex_elements =
+      svga->curr.zero_stride_vertex_elements;
+   key->num_zero_stride_vertex_elements =
+      svga->curr.num_zero_stride_vertex_elements;
+   return 0;
+}
+
+
+
+static int emit_hw_vs( struct svga_context *svga,
+                       unsigned dirty )
+{
+   struct svga_shader_result *result = NULL;
+   unsigned id = SVGA3D_INVALID_ID;
+   int ret = 0;
+
+   /* SVGA_NEW_NEED_SWTNL */
+   if (!svga->state.sw.need_swtnl) {
+      struct svga_vertex_shader *vs = svga->curr.vs;
+      struct svga_vs_compile_key key;
+
+      ret = make_vs_key( svga, &key );
+      if (ret)
+         return ret;
+
+      result = search_vs_key( vs, &key );
+      if (!result) {
+         ret = compile_vs( svga, vs, &key, &result );
+         if (ret)
+            return ret;
+      }
+
+      assert (result);
+      id = result->id;
+   }
+
+   if (id != svga->state.hw_draw.shader_id[PIPE_SHADER_VERTEX]) {
+      ret = SVGA3D_SetShader(svga->swc, 
+                             SVGA3D_SHADERTYPE_VS, 
+                             id );
+      if (ret)
+         return ret;
+
+      svga->dirty |= SVGA_NEW_VS_RESULT;
+      svga->state.hw_draw.shader_id[PIPE_SHADER_VERTEX] = id;
+      svga->state.hw_draw.vs = result;      
+   }
+
+   return 0;
+}
+
+struct svga_tracked_state svga_hw_vs = 
+{
+   "vertex shader (hwtnl)",
+   (SVGA_NEW_VS |
+    SVGA_NEW_PRESCALE |
+    SVGA_NEW_NEED_SWTNL |
+    SVGA_NEW_ZERO_STRIDE),
+   emit_hw_vs
+};
+
+
+/***********************************************************************
+ */
+static int update_zero_stride( struct svga_context *svga,
+                               unsigned dirty )
+{
+   unsigned i;
+
+   svga->curr.zero_stride_vertex_elements = 0;
+   svga->curr.num_zero_stride_vertex_elements = 0;
+
+   for (i = 0; i < svga->curr.num_vertex_elements; i++) {
+      const struct pipe_vertex_element *vel = &svga->curr.ve[i];
+      const struct pipe_vertex_buffer *vbuffer = &svga->curr.vb[
+         vel->vertex_buffer_index];
+      if (vbuffer->stride == 0) {
+         unsigned const_idx =
+            svga->curr.num_zero_stride_vertex_elements;
+         struct translate *translate;
+         struct translate_key key;
+         void *mapped_buffer;
+
+         svga->curr.zero_stride_vertex_elements |= (1 << i);
+         ++svga->curr.num_zero_stride_vertex_elements;
+
+         key.output_stride = 4 * sizeof(float);
+         key.nr_elements = 1;
+         key.element[0].input_format = vel->src_format;
+         key.element[0].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+         key.element[0].input_buffer = vel->vertex_buffer_index;
+         key.element[0].input_offset = vel->src_offset;
+         key.element[0].output_offset = const_idx * 4 * sizeof(float);
+
+         translate_key_sanitize(&key);
+         /* translate_generic_create is technically private but
+          * we don't want to code-generate, just want generic
+          * translation */
+         translate = translate_generic_create(&key);
+
+         assert(vel->src_offset == 0);
+         
+         mapped_buffer = pipe_buffer_map_range(svga->pipe.screen, 
+                                               vbuffer->buffer,
+                                               vel->src_offset,
+                                               pf_get_size(vel->src_format),
+                                               PIPE_BUFFER_USAGE_CPU_READ);
+         translate->set_buffer(translate, vel->vertex_buffer_index,
+                               mapped_buffer,
+                               vbuffer->stride);
+         translate->run(translate, 0, 1,
+                        svga->curr.zero_stride_constants);
+
+         pipe_buffer_unmap(svga->pipe.screen,
+                           vbuffer->buffer);
+         translate->release(translate);
+      }
+   }
+
+   if (svga->curr.num_zero_stride_vertex_elements)
+      svga->dirty |= SVGA_NEW_ZERO_STRIDE;
+
+   return 0;
+}
+
+struct svga_tracked_state svga_hw_update_zero_stride =
+{
+   "update zero_stride",
+   ( SVGA_NEW_VELEMENT |
+     SVGA_NEW_VBUFFER ),
+   update_zero_stride
+};